diff options
Diffstat (limited to 'diff.c')
| -rw-r--r-- | diff.c | 3198 |
1 files changed, 2133 insertions, 1065 deletions
@@ -2,12 +2,14 @@ * Copyright (C) 2005 Junio C Hamano */ #include "cache.h" +#include "alloc.h" #include "config.h" #include "tempfile.h" #include "quote.h" #include "diff.h" #include "diffcore.h" #include "delta.h" +#include "hex.h" #include "xdiff-interface.h" #include "color.h" #include "attr.h" @@ -18,12 +20,17 @@ #include "submodule-config.h" #include "submodule.h" #include "hashmap.h" +#include "mem-pool.h" #include "ll-merge.h" #include "string-list.h" -#include "argv-array.h" +#include "strvec.h" #include "graph.h" #include "packfile.h" +#include "parse-options.h" #include "help.h" +#include "promisor-remote.h" +#include "dir.h" +#include "strmap.h" #ifdef NO_FAST_WORKING_DIRECTORY #define FAST_WORKING_DIRECTORY 0 @@ -33,10 +40,11 @@ static int diff_detect_rename_default; static int diff_indent_heuristic = 1; -static int diff_rename_limit_default = 400; +static int diff_rename_limit_default = 1000; static int diff_suppress_blank_empty; static int diff_use_color_default = -1; static int diff_color_moved_default; +static int diff_color_moved_ws_default; static int diff_context_default = 3; static int diff_interhunk_context_default; static const char *diff_word_regex_cfg; @@ -45,6 +53,7 @@ static const char *diff_order_file_cfg; int diff_auto_refresh_index = 1; static int diff_mnemonic_prefix; static int diff_no_prefix; +static int diff_relative; static int diff_stat_graph_width; static int diff_dirstat_permille_default = 30; static struct diff_options default_diff_options; @@ -69,6 +78,12 @@ static char diff_colors[][COLOR_MAXLEN] = { GIT_COLOR_BOLD_YELLOW, /* NEW_MOVED ALTERNATIVE */ GIT_COLOR_FAINT, /* NEW_MOVED_DIM */ GIT_COLOR_FAINT_ITALIC, /* NEW_MOVED_ALTERNATIVE_DIM */ + GIT_COLOR_FAINT, /* CONTEXT_DIM */ + GIT_COLOR_FAINT_RED, /* OLD_DIM */ + GIT_COLOR_FAINT_GREEN, /* NEW_DIM */ + GIT_COLOR_BOLD, /* CONTEXT_BOLD */ + GIT_COLOR_BOLD_RED, /* OLD_BOLD */ + GIT_COLOR_BOLD_GREEN, /* NEW_BOLD */ }; static const char *color_diff_slots[] = { @@ -88,13 +103,14 @@ static const char *color_diff_slots[] = { [DIFF_FILE_NEW_MOVED_ALT] = "newMovedAlternative", [DIFF_FILE_NEW_MOVED_DIM] = "newMovedDimmed", [DIFF_FILE_NEW_MOVED_ALT_DIM] = "newMovedAlternativeDimmed", + [DIFF_CONTEXT_DIM] = "contextDimmed", + [DIFF_FILE_OLD_DIM] = "oldDimmed", + [DIFF_FILE_NEW_DIM] = "newDimmed", + [DIFF_CONTEXT_BOLD] = "contextBold", + [DIFF_FILE_OLD_BOLD] = "oldBold", + [DIFF_FILE_NEW_BOLD] = "newBold", }; -static NORETURN void die_want_option(const char *option_name) -{ - die(_("option '%s' requires a value"), option_name); -} - define_list_config_array_extra(color_diff_slots, {"plain"}); static int parse_diff_color_slot(const char *var) @@ -165,6 +181,10 @@ static int parse_submodule_params(struct diff_options *options, const char *valu options->submodule_format = DIFF_SUBMODULE_SHORT; else if (!strcmp(value, "diff")) options->submodule_format = DIFF_SUBMODULE_INLINE_DIFF; + /* + * Please update $__git_diff_submodule_formats in + * git-completion.bash when you add new formats. + */ else return -1; return 0; @@ -191,6 +211,10 @@ long parse_algorithm_value(const char *value) return XDF_PATIENCE_DIFF; else if (!strcasecmp(value, "histogram")) return XDF_HISTOGRAM_DIFF; + /* + * Please update $__git_diff_algorithms in git-completion.bash + * when you add new algorithms. + */ return -1; } @@ -242,7 +266,8 @@ void init_diff_ui_defaults(void) diff_detect_rename_default = DIFF_DETECT_RENAME; } -int git_diff_heuristic_config(const char *var, const char *value, void *cb) +int git_diff_heuristic_config(const char *var, const char *value, + void *cb UNUSED) { if (!strcmp(var, "diff.indentheuristic")) diff_indent_heuristic = git_config_bool(var, value); @@ -264,14 +289,60 @@ static int parse_color_moved(const char *arg) return COLOR_MOVED_NO; else if (!strcmp(arg, "plain")) return COLOR_MOVED_PLAIN; + else if (!strcmp(arg, "blocks")) + return COLOR_MOVED_BLOCKS; else if (!strcmp(arg, "zebra")) return COLOR_MOVED_ZEBRA; else if (!strcmp(arg, "default")) return COLOR_MOVED_DEFAULT; + else if (!strcmp(arg, "dimmed-zebra")) + return COLOR_MOVED_ZEBRA_DIM; else if (!strcmp(arg, "dimmed_zebra")) return COLOR_MOVED_ZEBRA_DIM; else - return error(_("color moved setting must be one of 'no', 'default', 'zebra', 'dimmed_zebra', 'plain'")); + return error(_("color moved setting must be one of 'no', 'default', 'blocks', 'zebra', 'dimmed-zebra', 'plain'")); +} + +static unsigned parse_color_moved_ws(const char *arg) +{ + int ret = 0; + struct string_list l = STRING_LIST_INIT_DUP; + struct string_list_item *i; + + string_list_split(&l, arg, ',', -1); + + for_each_string_list_item(i, &l) { + struct strbuf sb = STRBUF_INIT; + strbuf_addstr(&sb, i->string); + strbuf_trim(&sb); + + if (!strcmp(sb.buf, "no")) + ret = 0; + else if (!strcmp(sb.buf, "ignore-space-change")) + ret |= XDF_IGNORE_WHITESPACE_CHANGE; + else if (!strcmp(sb.buf, "ignore-space-at-eol")) + ret |= XDF_IGNORE_WHITESPACE_AT_EOL; + else if (!strcmp(sb.buf, "ignore-all-space")) + ret |= XDF_IGNORE_WHITESPACE; + else if (!strcmp(sb.buf, "allow-indentation-change")) + ret |= COLOR_MOVED_WS_ALLOW_INDENTATION_CHANGE; + else { + ret |= COLOR_MOVED_WS_ERROR; + error(_("unknown color-moved-ws mode '%s', possible values are 'ignore-space-change', 'ignore-space-at-eol', 'ignore-all-space', 'allow-indentation-change'"), sb.buf); + } + + strbuf_release(&sb); + } + + if ((ret & COLOR_MOVED_WS_ALLOW_INDENTATION_CHANGE) && + (ret & XDF_WHITESPACE_FLAGS)) { + error(_("color-moved-ws: allow-indentation-change cannot be combined with other whitespace modes")); + ret |= COLOR_MOVED_WS_ERROR; + } + + string_list_clear(&l, 0); + + return ret; } int git_diff_ui_config(const char *var, const char *value, void *cb) @@ -287,6 +358,13 @@ int git_diff_ui_config(const char *var, const char *value, void *cb) diff_color_moved_default = cm; return 0; } + if (!strcmp(var, "diff.colormovedws")) { + unsigned cm = parse_color_moved_ws(value); + if (cm & COLOR_MOVED_WS_ERROR) + return -1; + diff_color_moved_ws_default = cm; + return 0; + } if (!strcmp(var, "diff.context")) { diff_context_default = git_config_int(var, value); if (diff_context_default < 0) @@ -315,6 +393,10 @@ int git_diff_ui_config(const char *var, const char *value, void *cb) diff_no_prefix = git_config_bool(var, value); return 0; } + if (!strcmp(var, "diff.relative")) { + diff_relative = git_config_bool(var, value); + return 0; + } if (!strcmp(var, "diff.statgraphwidth")) { diff_stat_graph_width = git_config_int(var, value); return 0; @@ -343,14 +425,6 @@ int git_diff_ui_config(const char *var, const char *value, void *cb) return 0; } - if (!strcmp(var, "diff.wserrorhighlight")) { - int val = parse_ws_error_highlight(value); - if (val < 0) - return -1; - ws_error_highlight_default = val; - return 0; - } - if (git_color_config(var, value, cb) < 0) return -1; @@ -379,6 +453,14 @@ int git_diff_basic_config(const char *var, const char *value, void *cb) return color_parse(value, diff_colors[slot]); } + if (!strcmp(var, "diff.wserrorhighlight")) { + int val = parse_ws_error_highlight(value); + if (val < 0) + return -1; + ws_error_highlight_default = val; + return 0; + } + /* like GNU diff's --suppress-blank-empty option */ if (!strcmp(var, "diff.suppressblankempty") || /* for backwards compatibility */ @@ -406,14 +488,14 @@ int git_diff_basic_config(const char *var, const char *value, void *cb) static char *quote_two(const char *one, const char *two) { - int need_one = quote_c_style(one, NULL, NULL, 1); - int need_two = quote_c_style(two, NULL, NULL, 1); + int need_one = quote_c_style(one, NULL, NULL, CQUOTE_NODQ); + int need_two = quote_c_style(two, NULL, NULL, CQUOTE_NODQ); struct strbuf res = STRBUF_INIT; if (need_one + need_two) { strbuf_addch(&res, '"'); - quote_c_style(one, &res, NULL, 1); - quote_c_style(two, &res, NULL, 1); + quote_c_style(one, &res, NULL, CQUOTE_NODQ); + quote_c_style(two, &res, NULL, CQUOTE_NODQ); strbuf_addch(&res, '"'); } else { strbuf_addstr(&res, one); @@ -429,7 +511,7 @@ static const char *external_diff(void) if (done_preparing) return external_diff_cmd; - external_diff_cmd = getenv("GIT_EXTERNAL_DIFF"); + external_diff_cmd = xstrdup_or_null(getenv("GIT_EXTERNAL_DIFF")); if (!external_diff_cmd) external_diff_cmd = external_diff_cmd_cfg; done_preparing = 1; @@ -494,14 +576,15 @@ static int count_lines(const char *data, int size) return count; } -static int fill_mmfile(mmfile_t *mf, struct diff_filespec *one) +static int fill_mmfile(struct repository *r, mmfile_t *mf, + struct diff_filespec *one) { if (!DIFF_FILE_VALID(one)) { mf->ptr = (char *)""; /* does not matter */ mf->size = 0; return 0; } - else if (diff_populate_filespec(one, 0)) + else if (diff_populate_filespec(r, one, NULL)) return -1; mf->ptr = one->data; @@ -510,15 +593,20 @@ static int fill_mmfile(mmfile_t *mf, struct diff_filespec *one) } /* like fill_mmfile, but only for size, so we can avoid retrieving blob */ -static unsigned long diff_filespec_size(struct diff_filespec *one) +static unsigned long diff_filespec_size(struct repository *r, + struct diff_filespec *one) { + struct diff_populate_filespec_options dpf_options = { + .check_size_only = 1, + }; + if (!DIFF_FILE_VALID(one)) return 0; - diff_populate_filespec(one, CHECK_SIZE_ONLY); + diff_populate_filespec(r, one, &dpf_options); return one->size; } -static int count_trailing_blank(mmfile_t *mf, unsigned ws_rule) +static int count_trailing_blank(mmfile_t *mf) { char *ptr = mf->ptr; long size = mf->size; @@ -536,7 +624,7 @@ static int count_trailing_blank(mmfile_t *mf, unsigned ws_rule) for (prev_eol = ptr; mf->ptr <= prev_eol; prev_eol--) if (*prev_eol == '\n') break; - if (!ws_blank_line(prev_eol + 1, ptr - prev_eol, ws_rule)) + if (!ws_blank_line(prev_eol + 1, ptr - prev_eol)) break; cnt++; ptr = prev_eol - 1; @@ -548,9 +636,8 @@ static void check_blank_at_eof(mmfile_t *mf1, mmfile_t *mf2, struct emit_callback *ecbdata) { int l1, l2, at; - unsigned ws_rule = ecbdata->ws_rule; - l1 = count_trailing_blank(mf1, ws_rule); - l2 = count_trailing_blank(mf2, ws_rule); + l1 = count_trailing_blank(mf1); + l2 = count_trailing_blank(mf2); if (l2 <= l1) { ecbdata->blank_at_eof_in_preimage = 0; ecbdata->blank_at_eof_in_postimage = 0; @@ -563,37 +650,55 @@ static void check_blank_at_eof(mmfile_t *mf1, mmfile_t *mf2, ecbdata->blank_at_eof_in_postimage = (at - l2) + 1; } -static void emit_line_0(struct diff_options *o, const char *set, const char *reset, +static void emit_line_0(struct diff_options *o, + const char *set_sign, const char *set, unsigned reverse, const char *reset, int first, const char *line, int len) { int has_trailing_newline, has_trailing_carriage_return; - int nofirst; + int needs_reset = 0; /* at the end of the line */ FILE *file = o->file; fputs(diff_line_prefix(o), file); - if (len == 0) { - has_trailing_newline = (first == '\n'); - has_trailing_carriage_return = (!has_trailing_newline && - (first == '\r')); - nofirst = has_trailing_newline || has_trailing_carriage_return; - } else { - has_trailing_newline = (len > 0 && line[len-1] == '\n'); - if (has_trailing_newline) - len--; - has_trailing_carriage_return = (len > 0 && line[len-1] == '\r'); - if (has_trailing_carriage_return) - len--; - nofirst = 0; + has_trailing_newline = (len > 0 && line[len-1] == '\n'); + if (has_trailing_newline) + len--; + + has_trailing_carriage_return = (len > 0 && line[len-1] == '\r'); + if (has_trailing_carriage_return) + len--; + + if (!len && !first) + goto end_of_line; + + if (reverse && want_color(o->use_color)) { + fputs(GIT_COLOR_REVERSE, file); + needs_reset = 1; } - if (len || !nofirst) { + if (set_sign) { + fputs(set_sign, file); + needs_reset = 1; + } + + if (first) + fputc(first, file); + + if (!len) + goto end_of_line; + + if (set) { + if (set_sign && set != set_sign) + fputs(reset, file); fputs(set, file); - if (!nofirst) - fputc(first, file); - fwrite(line, len, 1, file); - fputs(reset, file); + needs_reset = 1; } + fwrite(line, len, 1, file); + needs_reset = 1; /* 'line' may contain color codes. */ + +end_of_line: + if (needs_reset) + fputs(reset, file); if (has_trailing_carriage_return) fputc('\r', file); if (has_trailing_newline) @@ -603,7 +708,7 @@ static void emit_line_0(struct diff_options *o, const char *set, const char *res static void emit_line(struct diff_options *o, const char *set, const char *reset, const char *line, int len) { - emit_line_0(o, set, reset, line[0], line+1, len-1); + emit_line_0(o, set, NULL, 0, reset, 0, line, len); } enum diff_symbol { @@ -670,15 +775,18 @@ struct emitted_diff_symbol { const char *line; int len; int flags; + int indent_off; /* Offset to first non-whitespace character */ + int indent_width; /* The visual width of the indentation */ + unsigned id; enum diff_symbol s; }; -#define EMITTED_DIFF_SYMBOL_INIT {NULL} +#define EMITTED_DIFF_SYMBOL_INIT { 0 } struct emitted_diff_symbols { struct emitted_diff_symbol *buf; int nr, alloc; }; -#define EMITTED_DIFF_SYMBOLS_INIT {NULL, 0, 0} +#define EMITTED_DIFF_SYMBOLS_INIT { 0 } static void append_emitted_diff_symbol(struct diff_options *o, struct emitted_diff_symbol *e) @@ -694,92 +802,270 @@ static void append_emitted_diff_symbol(struct diff_options *o, f->line = e->line ? xmemdupz(e->line, e->len) : NULL; } +static void free_emitted_diff_symbols(struct emitted_diff_symbols *e) +{ + if (!e) + return; + free(e->buf); + free(e); +} + struct moved_entry { - struct hashmap_entry ent; const struct emitted_diff_symbol *es; struct moved_entry *next_line; + struct moved_entry *next_match; }; -static int moved_entry_cmp(const struct diff_options *diffopt, - const struct moved_entry *a, - const struct moved_entry *b, - const void *keydata) +struct moved_block { + struct moved_entry *match; + int wsd; /* The whitespace delta of this block */ +}; + +#define INDENT_BLANKLINE INT_MIN + +static void fill_es_indent_data(struct emitted_diff_symbol *es) +{ + unsigned int off = 0, i; + int width = 0, tab_width = es->flags & WS_TAB_WIDTH_MASK; + const char *s = es->line; + const int len = es->len; + + /* skip any \v \f \r at start of indentation */ + while (s[off] == '\f' || s[off] == '\v' || + (s[off] == '\r' && off < len - 1)) + off++; + + /* calculate the visual width of indentation */ + while(1) { + if (s[off] == ' ') { + width++; + off++; + } else if (s[off] == '\t') { + width += tab_width - (width % tab_width); + while (s[++off] == '\t') + width += tab_width; + } else { + break; + } + } + + /* check if this line is blank */ + for (i = off; i < len; i++) + if (!isspace(s[i])) + break; + + if (i == len) { + es->indent_width = INDENT_BLANKLINE; + es->indent_off = len; + } else { + es->indent_off = off; + es->indent_width = width; + } +} + +static int compute_ws_delta(const struct emitted_diff_symbol *a, + const struct emitted_diff_symbol *b) { - return !xdiff_compare_lines(a->es->line, a->es->len, - b->es->line, b->es->len, - diffopt->xdl_opts); + int a_width = a->indent_width, + b_width = b->indent_width; + + if (a_width == INDENT_BLANKLINE && b_width == INDENT_BLANKLINE) + return INDENT_BLANKLINE; + + return a_width - b_width; } -static struct moved_entry *prepare_entry(struct diff_options *o, - int line_no) +static int cmp_in_block_with_wsd(const struct moved_entry *cur, + const struct emitted_diff_symbol *l, + struct moved_block *pmb) { - struct moved_entry *ret = xmalloc(sizeof(*ret)); - struct emitted_diff_symbol *l = &o->emitted_symbols->buf[line_no]; + int a_width = cur->es->indent_width, b_width = l->indent_width; + int delta; - ret->ent.hash = xdiff_hash_string(l->line, l->len, o->xdl_opts); - ret->es = l; - ret->next_line = NULL; + /* The text of each line must match */ + if (cur->es->id != l->id) + return 1; - return ret; + /* + * If 'l' and 'cur' are both blank then we don't need to check the + * indent. We only need to check cur as we know the strings match. + * */ + if (a_width == INDENT_BLANKLINE) + return 0; + + /* + * The indent changes of the block are known and stored in pmb->wsd; + * however we need to check if the indent changes of the current line + * match those of the current block. + */ + delta = b_width - a_width; + + /* + * If the previous lines of this block were all blank then set its + * whitespace delta. + */ + if (pmb->wsd == INDENT_BLANKLINE) + pmb->wsd = delta; + + return delta != pmb->wsd; } -static void add_lines_to_move_detection(struct diff_options *o, - struct hashmap *add_lines, - struct hashmap *del_lines) +struct interned_diff_symbol { + struct hashmap_entry ent; + struct emitted_diff_symbol *es; +}; + +static int interned_diff_symbol_cmp(const void *hashmap_cmp_fn_data, + const struct hashmap_entry *eptr, + const struct hashmap_entry *entry_or_key, + const void *keydata UNUSED) { - struct moved_entry *prev_line = NULL; + const struct diff_options *diffopt = hashmap_cmp_fn_data; + const struct emitted_diff_symbol *a, *b; + unsigned flags = diffopt->color_moved_ws_handling + & XDF_WHITESPACE_FLAGS; + + a = container_of(eptr, const struct interned_diff_symbol, ent)->es; + b = container_of(entry_or_key, const struct interned_diff_symbol, ent)->es; + return !xdiff_compare_lines(a->line + a->indent_off, + a->len - a->indent_off, + b->line + b->indent_off, + b->len - b->indent_off, flags); +} + +static void prepare_entry(struct diff_options *o, struct emitted_diff_symbol *l, + struct interned_diff_symbol *s) +{ + unsigned flags = o->color_moved_ws_handling & XDF_WHITESPACE_FLAGS; + unsigned int hash = xdiff_hash_string(l->line + l->indent_off, + l->len - l->indent_off, flags); + + hashmap_entry_init(&s->ent, hash); + s->es = l; +} + +struct moved_entry_list { + struct moved_entry *add, *del; +}; + +static struct moved_entry_list *add_lines_to_move_detection(struct diff_options *o, + struct mem_pool *entry_mem_pool) +{ + struct moved_entry *prev_line = NULL; + struct mem_pool interned_pool; + struct hashmap interned_map; + struct moved_entry_list *entry_list = NULL; + size_t entry_list_alloc = 0; + unsigned id = 0; int n; + + hashmap_init(&interned_map, interned_diff_symbol_cmp, o, 8096); + mem_pool_init(&interned_pool, 1024 * 1024); + for (n = 0; n < o->emitted_symbols->nr; n++) { - struct hashmap *hm; - struct moved_entry *key; + struct interned_diff_symbol key; + struct emitted_diff_symbol *l = &o->emitted_symbols->buf[n]; + struct interned_diff_symbol *s; + struct moved_entry *entry; - switch (o->emitted_symbols->buf[n].s) { - case DIFF_SYMBOL_PLUS: - hm = add_lines; - break; - case DIFF_SYMBOL_MINUS: - hm = del_lines; - break; - default: + if (l->s != DIFF_SYMBOL_PLUS && l->s != DIFF_SYMBOL_MINUS) { prev_line = NULL; continue; } - key = prepare_entry(o, n); - if (prev_line && prev_line->es->s == o->emitted_symbols->buf[n].s) - prev_line->next_line = key; + if (o->color_moved_ws_handling & + COLOR_MOVED_WS_ALLOW_INDENTATION_CHANGE) + fill_es_indent_data(l); - hashmap_add(hm, key); - prev_line = key; + prepare_entry(o, l, &key); + s = hashmap_get_entry(&interned_map, &key, ent, &key.ent); + if (s) { + l->id = s->es->id; + } else { + l->id = id; + ALLOC_GROW_BY(entry_list, id, 1, entry_list_alloc); + hashmap_add(&interned_map, + memcpy(mem_pool_alloc(&interned_pool, + sizeof(key)), + &key, sizeof(key))); + } + entry = mem_pool_alloc(entry_mem_pool, sizeof(*entry)); + entry->es = l; + entry->next_line = NULL; + if (prev_line && prev_line->es->s == l->s) + prev_line->next_line = entry; + prev_line = entry; + if (l->s == DIFF_SYMBOL_PLUS) { + entry->next_match = entry_list[l->id].add; + entry_list[l->id].add = entry; + } else { + entry->next_match = entry_list[l->id].del; + entry_list[l->id].del = entry; + } } + + hashmap_clear(&interned_map); + mem_pool_discard(&interned_pool, 0); + + return entry_list; } -static int shrink_potential_moved_blocks(struct moved_entry **pmb, - int pmb_nr) +static void pmb_advance_or_null(struct diff_options *o, + struct emitted_diff_symbol *l, + struct moved_block *pmb, + int *pmb_nr) { - int lp, rp; + int i, j; - /* Shrink the set of potential block to the remaining running */ - for (lp = 0, rp = pmb_nr - 1; lp <= rp;) { - while (lp < pmb_nr && pmb[lp]) - lp++; - /* lp points at the first NULL now */ + for (i = 0, j = 0; i < *pmb_nr; i++) { + int match; + struct moved_entry *prev = pmb[i].match; + struct moved_entry *cur = (prev && prev->next_line) ? + prev->next_line : NULL; - while (rp > -1 && !pmb[rp]) - rp--; - /* rp points at the last non-NULL */ + if (o->color_moved_ws_handling & + COLOR_MOVED_WS_ALLOW_INDENTATION_CHANGE) + match = cur && + !cmp_in_block_with_wsd(cur, l, &pmb[i]); + else + match = cur && cur->es->id == l->id; - if (lp < pmb_nr && rp > -1 && lp < rp) { - pmb[lp] = pmb[rp]; - pmb[rp] = NULL; - rp--; - lp++; + if (match) { + pmb[j] = pmb[i]; + pmb[j++].match = cur; } } + *pmb_nr = j; +} + +static void fill_potential_moved_blocks(struct diff_options *o, + struct moved_entry *match, + struct emitted_diff_symbol *l, + struct moved_block **pmb_p, + int *pmb_alloc_p, int *pmb_nr_p) + +{ + struct moved_block *pmb = *pmb_p; + int pmb_alloc = *pmb_alloc_p, pmb_nr = *pmb_nr_p; + + /* + * The current line is the start of a new block. + * Setup the set of potential blocks. + */ + for (; match; match = match->next_match) { + ALLOC_GROW(pmb, pmb_nr + 1, pmb_alloc); + if (o->color_moved_ws_handling & + COLOR_MOVED_WS_ALLOW_INDENTATION_CHANGE) + pmb[pmb_nr].wsd = compute_ws_delta(l, match->es); + else + pmb[pmb_nr].wsd = 0; + pmb[pmb_nr++].match = match; + } - /* Remember the number of running sets */ - return rp + 1; + *pmb_p = pmb; + *pmb_alloc_p = pmb_alloc; + *pmb_nr_p = pmb_nr; } /* @@ -792,14 +1078,19 @@ static int shrink_potential_moved_blocks(struct moved_entry **pmb, * The last block consists of the (n - block_length)'th line up to but not * including the nth line. * + * Returns 0 if the last block is empty or is unset by this function, non zero + * otherwise. + * * NEEDSWORK: This uses the same heuristic as blame_entry_score() in blame.c. * Think of a way to unify them. */ -static void adjust_last_block(struct diff_options *o, int n, int block_length) +#define DIFF_SYMBOL_MOVED_LINE_ZEBRA_MASK \ + (DIFF_SYMBOL_MOVED_LINE | DIFF_SYMBOL_MOVED_LINE_ALT) +static int adjust_last_block(struct diff_options *o, int n, int block_length) { int i, alnum_count = 0; if (o->color_moved == COLOR_MOVED_PLAIN) - return; + return block_length; for (i = 1; i < block_length + 1; i++) { const char *c = o->emitted_symbols->buf[n - i].line; for (; *c; c++) { @@ -807,101 +1098,104 @@ static void adjust_last_block(struct diff_options *o, int n, int block_length) continue; alnum_count++; if (alnum_count >= COLOR_MOVED_MIN_ALNUM_COUNT) - return; + return 1; } } for (i = 1; i < block_length + 1; i++) - o->emitted_symbols->buf[n - i].flags &= ~DIFF_SYMBOL_MOVED_LINE; + o->emitted_symbols->buf[n - i].flags &= ~DIFF_SYMBOL_MOVED_LINE_ZEBRA_MASK; + return 0; } /* Find blocks of moved code, delegate actual coloring decision to helper */ static void mark_color_as_moved(struct diff_options *o, - struct hashmap *add_lines, - struct hashmap *del_lines) + struct moved_entry_list *entry_list) { - struct moved_entry **pmb = NULL; /* potentially moved blocks */ + struct moved_block *pmb = NULL; /* potentially moved blocks */ int pmb_nr = 0, pmb_alloc = 0; - int n, flipped_block = 1, block_length = 0; + int n, flipped_block = 0, block_length = 0; + enum diff_symbol moved_symbol = DIFF_SYMBOL_BINARY_DIFF_HEADER; for (n = 0; n < o->emitted_symbols->nr; n++) { - struct hashmap *hm = NULL; - struct moved_entry *key; struct moved_entry *match = NULL; struct emitted_diff_symbol *l = &o->emitted_symbols->buf[n]; - int i; switch (l->s) { case DIFF_SYMBOL_PLUS: - hm = del_lines; - key = prepare_entry(o, n); - match = hashmap_get(hm, key, o); - free(key); + match = entry_list[l->id].del; break; case DIFF_SYMBOL_MINUS: - hm = add_lines; - key = prepare_entry(o, n); - match = hashmap_get(hm, key, o); - free(key); + match = entry_list[l->id].add; break; default: - flipped_block = 1; + flipped_block = 0; } - if (!match) { - adjust_last_block(o, n, block_length); + if (pmb_nr && (!match || l->s != moved_symbol)) { + if (!adjust_last_block(o, n, block_length) && + block_length > 1) { + /* + * Rewind in case there is another match + * starting at the second line of the block + */ + match = NULL; + n -= block_length; + } pmb_nr = 0; block_length = 0; + flipped_block = 0; + } + if (!match) { + moved_symbol = DIFF_SYMBOL_BINARY_DIFF_HEADER; continue; } - l->flags |= DIFF_SYMBOL_MOVED_LINE; - - if (o->color_moved == COLOR_MOVED_PLAIN) + if (o->color_moved == COLOR_MOVED_PLAIN) { + l->flags |= DIFF_SYMBOL_MOVED_LINE; continue; - - /* Check any potential block runs, advance each or nullify */ - for (i = 0; i < pmb_nr; i++) { - struct moved_entry *p = pmb[i]; - struct moved_entry *pnext = (p && p->next_line) ? - p->next_line : NULL; - if (pnext && !hm->cmpfn(o, pnext, match, NULL)) { - pmb[i] = p->next_line; - } else { - pmb[i] = NULL; - } } - pmb_nr = shrink_potential_moved_blocks(pmb, pmb_nr); + pmb_advance_or_null(o, l, pmb, &pmb_nr); if (pmb_nr == 0) { - /* - * The current line is the start of a new block. - * Setup the set of potential blocks. - */ - for (; match; match = hashmap_get_next(hm, match)) { - ALLOC_GROW(pmb, pmb_nr + 1, pmb_alloc); - pmb[pmb_nr++] = match; - } + int contiguous = adjust_last_block(o, n, block_length); + + if (!contiguous && block_length > 1) + /* + * Rewind in case there is another match + * starting at the second line of the block + */ + n -= block_length; + else + fill_potential_moved_blocks(o, match, l, + &pmb, &pmb_alloc, + &pmb_nr); - flipped_block = (flipped_block + 1) % 2; + if (contiguous && pmb_nr && moved_symbol == l->s) + flipped_block = (flipped_block + 1) % 2; + else + flipped_block = 0; + + if (pmb_nr) + moved_symbol = l->s; + else + moved_symbol = DIFF_SYMBOL_BINARY_DIFF_HEADER; - adjust_last_block(o, n, block_length); block_length = 0; } - block_length++; - - if (flipped_block) - l->flags |= DIFF_SYMBOL_MOVED_LINE_ALT; + if (pmb_nr) { + block_length++; + l->flags |= DIFF_SYMBOL_MOVED_LINE; + if (flipped_block && o->color_moved != COLOR_MOVED_BLOCKS) + l->flags |= DIFF_SYMBOL_MOVED_LINE_ALT; + } } adjust_last_block(o, n, block_length); free(pmb); } -#define DIFF_SYMBOL_MOVED_LINE_ZEBRA_MASK \ - (DIFF_SYMBOL_MOVED_LINE | DIFF_SYMBOL_MOVED_LINE_ALT) static void dim_moved_lines(struct diff_options *o) { int n; @@ -962,11 +1256,13 @@ static void dim_moved_lines(struct diff_options *o) } static void emit_line_ws_markup(struct diff_options *o, - const char *set, const char *reset, - const char *line, int len, char sign, + const char *set_sign, const char *set, + const char *reset, + int sign_index, const char *line, int len, unsigned ws_rule, int blank_at_eof) { const char *ws = NULL; + int sign = o->output_indicators[sign_index]; if (o->ws_error_highlight & ws_rule) { ws = diff_get_color_opt(o, DIFF_WHITESPACE); @@ -974,14 +1270,17 @@ static void emit_line_ws_markup(struct diff_options *o, ws = NULL; } - if (!ws) - emit_line_0(o, set, reset, sign, line, len); - else if (blank_at_eof) + if (!ws && !set_sign) + emit_line_0(o, set, NULL, 0, reset, sign, line, len); + else if (!ws) { + emit_line_0(o, set_sign, set, !!set_sign, reset, sign, line, len); + } else if (blank_at_eof) /* Blank line at EOF - paint '+' as well */ - emit_line_0(o, ws, reset, sign, line, len); + emit_line_0(o, ws, NULL, 0, reset, sign, line, len); else { /* Emit just the prefix, then the rest. */ - emit_line_0(o, set, reset, sign, "", 0); + emit_line_0(o, set_sign ? set_sign : set, NULL, !!set_sign, reset, + sign, "", 0); ws_check_emit(line, len, ws_rule, o->file, set, reset, ws); } @@ -991,8 +1290,7 @@ static void emit_diff_symbol_from_struct(struct diff_options *o, struct emitted_diff_symbol *eds) { static const char *nneof = " No newline at end of file\n"; - const char *context, *reset, *set, *meta, *fraginfo; - struct strbuf sb = STRBUF_INIT; + const char *context, *reset, *set, *set_sign, *meta, *fraginfo; enum diff_symbol s = eds->s; const char *line = eds->line; @@ -1004,7 +1302,7 @@ static void emit_diff_symbol_from_struct(struct diff_options *o, context = diff_get_color_opt(o, DIFF_CONTEXT); reset = diff_get_color_opt(o, DIFF_RESET); putc('\n', o->file); - emit_line_0(o, context, reset, '\\', + emit_line_0(o, context, NULL, 0, reset, '\\', nneof, strlen(nneof)); break; case DIFF_SYMBOL_SUBMODULE_HEADER: @@ -1031,7 +1329,19 @@ static void emit_diff_symbol_from_struct(struct diff_options *o, case DIFF_SYMBOL_CONTEXT: set = diff_get_color_opt(o, DIFF_CONTEXT); reset = diff_get_color_opt(o, DIFF_RESET); - emit_line_ws_markup(o, set, reset, line, len, ' ', + set_sign = NULL; + if (o->flags.dual_color_diffed_diffs) { + char c = !len ? 0 : line[0]; + + if (c == '+') + set = diff_get_color_opt(o, DIFF_FILE_NEW); + else if (c == '@') + set = diff_get_color_opt(o, DIFF_FRAGINFO); + else if (c == '-') + set = diff_get_color_opt(o, DIFF_FILE_OLD); + } + emit_line_ws_markup(o, set_sign, set, reset, + OUTPUT_INDICATOR_CONTEXT, line, len, flags & (DIFF_SYMBOL_CONTENT_WS_MASK), 0); break; case DIFF_SYMBOL_PLUS: @@ -1058,7 +1368,24 @@ static void emit_diff_symbol_from_struct(struct diff_options *o, set = diff_get_color_opt(o, DIFF_FILE_NEW); } reset = diff_get_color_opt(o, DIFF_RESET); - emit_line_ws_markup(o, set, reset, line, len, '+', + if (!o->flags.dual_color_diffed_diffs) + set_sign = NULL; + else { + char c = !len ? 0 : line[0]; + + set_sign = set; + if (c == '-') + set = diff_get_color_opt(o, DIFF_FILE_OLD_BOLD); + else if (c == '@') + set = diff_get_color_opt(o, DIFF_FRAGINFO); + else if (c == '+') + set = diff_get_color_opt(o, DIFF_FILE_NEW_BOLD); + else + set = diff_get_color_opt(o, DIFF_CONTEXT_BOLD); + flags &= ~DIFF_SYMBOL_CONTENT_WS_MASK; + } + emit_line_ws_markup(o, set_sign, set, reset, + OUTPUT_INDICATOR_NEW, line, len, flags & DIFF_SYMBOL_CONTENT_WS_MASK, flags & DIFF_SYMBOL_CONTENT_BLANK_LINE_EOF); break; @@ -1086,7 +1413,23 @@ static void emit_diff_symbol_from_struct(struct diff_options *o, set = diff_get_color_opt(o, DIFF_FILE_OLD); } reset = diff_get_color_opt(o, DIFF_RESET); - emit_line_ws_markup(o, set, reset, line, len, '-', + if (!o->flags.dual_color_diffed_diffs) + set_sign = NULL; + else { + char c = !len ? 0 : line[0]; + + set_sign = set; + if (c == '+') + set = diff_get_color_opt(o, DIFF_FILE_NEW_DIM); + else if (c == '@') + set = diff_get_color_opt(o, DIFF_FRAGINFO); + else if (c == '-') + set = diff_get_color_opt(o, DIFF_FILE_OLD_DIM); + else + set = diff_get_color_opt(o, DIFF_CONTEXT_DIM); + } + emit_line_ws_markup(o, set_sign, set, reset, + OUTPUT_INDICATOR_OLD, line, len, flags & DIFF_SYMBOL_CONTENT_WS_MASK, 0); break; case DIFF_SYMBOL_WORDS_PORCELAIN: @@ -1179,13 +1522,14 @@ static void emit_diff_symbol_from_struct(struct diff_options *o, default: BUG("unknown diff symbol"); } - strbuf_release(&sb); } static void emit_diff_symbol(struct diff_options *o, enum diff_symbol s, const char *line, int len, unsigned flags) { - struct emitted_diff_symbol e = {line, len, flags, s}; + struct emitted_diff_symbol e = { + .line = line, .len = len, .flags = flags, .s = s + }; if (o->emitted_symbols) append_emitted_diff_symbol(o, &e); @@ -1240,11 +1584,10 @@ static int new_blank_line_at_eof(struct emit_callback *ecbdata, const char *line ecbdata->blank_at_eof_in_preimage <= ecbdata->lno_in_preimage && ecbdata->blank_at_eof_in_postimage <= ecbdata->lno_in_postimage)) return 0; - return ws_blank_line(line, len, ecbdata->ws_rule); + return ws_blank_line(line, len); } -static void emit_add_line(const char *reset, - struct emit_callback *ecbdata, +static void emit_add_line(struct emit_callback *ecbdata, const char *line, int len) { unsigned flags = WSEH_NEW | ecbdata->ws_rule; @@ -1254,16 +1597,14 @@ static void emit_add_line(const char *reset, emit_diff_symbol(ecbdata->opt, DIFF_SYMBOL_PLUS, line, len, flags); } -static void emit_del_line(const char *reset, - struct emit_callback *ecbdata, +static void emit_del_line(struct emit_callback *ecbdata, const char *line, int len) { unsigned flags = WSEH_OLD | ecbdata->ws_rule; emit_diff_symbol(ecbdata->opt, DIFF_SYMBOL_MINUS, line, len, flags); } -static void emit_context_line(const char *reset, - struct emit_callback *ecbdata, +static void emit_context_line(struct emit_callback *ecbdata, const char *line, int len) { unsigned flags = WSEH_CONTEXT | ecbdata->ws_rule; @@ -1277,6 +1618,7 @@ static void emit_hunk_header(struct emit_callback *ecbdata, const char *frag = diff_get_color(ecbdata->color_diff, DIFF_FRAGINFO); const char *func = diff_get_color(ecbdata->color_diff, DIFF_FUNCINFO); const char *reset = diff_get_color(ecbdata->color_diff, DIFF_RESET); + const char *reverse = ecbdata->color_diff ? GIT_COLOR_REVERSE : ""; static const char atat[2] = { '@', '@' }; const char *cp, *ep; struct strbuf msgbuf = STRBUF_INIT; @@ -1297,8 +1639,13 @@ static void emit_hunk_header(struct emit_callback *ecbdata, ep += 2; /* skip over @@ */ /* The hunk header in fraginfo color */ + if (ecbdata->opt->flags.dual_color_diffed_diffs) + strbuf_addstr(&msgbuf, reverse); strbuf_addstr(&msgbuf, frag); - strbuf_add(&msgbuf, line, ep - line); + if (ecbdata->opt->flags.suppress_hunk_header_line_count) + strbuf_add(&msgbuf, atat, sizeof(atat)); + else + strbuf_add(&msgbuf, line, ep - line); strbuf_addstr(&msgbuf, reset); /* @@ -1331,7 +1678,8 @@ static void emit_hunk_header(struct emit_callback *ecbdata, strbuf_release(&msgbuf); } -static struct diff_tempfile *claim_diff_tempfile(void) { +static struct diff_tempfile *claim_diff_tempfile(void) +{ int i; for (i = 0; i < ARRAY_SIZE(diff_temp); i++) if (!diff_temp[i].name) @@ -1368,7 +1716,6 @@ static void emit_rewrite_lines(struct emit_callback *ecb, int prefix, const char *data, int size) { const char *endp = NULL; - const char *reset = diff_get_color(ecb->color_diff, DIFF_RESET); while (0 < size) { int len; @@ -1377,10 +1724,10 @@ static void emit_rewrite_lines(struct emit_callback *ecb, len = endp ? (endp - data + 1) : size; if (prefix != '+') { ecb->lno_in_preimage++; - emit_del_line(reset, ecb, data, len); + emit_del_line(ecb, data, len); } else { ecb->lno_in_postimage++; - emit_add_line(reset, ecb, data, len); + emit_add_line(ecb, data, len); } size -= len; data += len; @@ -1421,12 +1768,12 @@ static void emit_rewrite_diff(const char *name_a, quote_two_c_style(&a_name, a_prefix, name_a, 0); quote_two_c_style(&b_name, b_prefix, name_b, 0); - size_one = fill_textconv(textconv_one, one, &data_one); - size_two = fill_textconv(textconv_two, two, &data_two); + size_one = fill_textconv(o->repo, textconv_one, one, &data_one); + size_two = fill_textconv(o->repo, textconv_two, two, &data_two); memset(&ecbdata, 0, sizeof(ecbdata)); ecbdata.color_diff = want_color(o->use_color); - ecbdata.ws_rule = whitespace_rule(name_b); + ecbdata.ws_rule = whitespace_rule(o->repo->index, name_b); ecbdata.opt = o; if (ecbdata.ws_rule & WS_BLANK_AT_EOF) { mmfile_t mf1, mf2; @@ -1606,19 +1953,17 @@ static int color_words_output_graph_prefix(struct diff_words_data *diff_words) } } -static void fn_out_diff_words_aux(void *priv, char *line, unsigned long len) +static void fn_out_diff_words_aux(void *priv, + long minus_first, long minus_len, + long plus_first, long plus_len, + const char *func UNUSED, long funclen UNUSED) { struct diff_words_data *diff_words = priv; struct diff_words_style *style = diff_words->style; - int minus_first, minus_len, plus_first, plus_len; const char *minus_begin, *minus_end, *plus_begin, *plus_end; struct diff_options *opt = diff_words->opt; const char *line_prefix; - if (line[0] != '@' || parse_hunk_header(line, len, - &minus_first, &minus_len, &plus_first, &plus_len)) - return; - assert(opt); line_prefix = diff_line_prefix(opt); @@ -1665,7 +2010,7 @@ static void fn_out_diff_words_aux(void *priv, char *line, unsigned long len) static int find_word_boundaries(mmfile_t *buffer, regex_t *word_regex, int *begin, int *end) { - if (word_regex && *begin < buffer->size) { + while (word_regex && *begin < buffer->size) { regmatch_t match[1]; if (!regexec_buf(word_regex, buffer->ptr + *begin, buffer->size - *begin, 1, match, 0)) { @@ -1673,9 +2018,13 @@ static int find_word_boundaries(mmfile_t *buffer, regex_t *word_regex, '\n', match[0].rm_eo - match[0].rm_so); *end = p ? p - buffer->ptr : match[0].rm_eo + *begin; *begin += match[0].rm_so; - return *begin >= *end; + if (*begin == *end) + (*begin)++; + else + return *begin > *end; + } else { + return -1; } - return -1; } /* find the next word */ @@ -1768,8 +2117,8 @@ static void diff_words_show(struct diff_words_data *diff_words) xpp.flags = 0; /* as only the hunk header will be parsed, we need a 0-context */ xecfg.ctxlen = 0; - if (xdi_diff_outf(&minus, &plus, fn_out_diff_words_aux, diff_words, - &xpp, &xecfg)) + if (xdi_diff_outf(&minus, &plus, fn_out_diff_words_aux, NULL, + diff_words, &xpp, &xecfg)) die("unable to generate word diff"); free(minus.ptr); free(plus.ptr); @@ -1814,23 +2163,25 @@ static void diff_words_flush(struct emit_callback *ecbdata) } } -static void diff_filespec_load_driver(struct diff_filespec *one) +static void diff_filespec_load_driver(struct diff_filespec *one, + struct index_state *istate) { /* Use already-loaded driver */ if (one->driver) return; if (S_ISREG(one->mode)) - one->driver = userdiff_find_by_path(one->path); + one->driver = userdiff_find_by_path(istate, one->path); /* Fallback to default settings */ if (!one->driver) one->driver = userdiff_find_by_name("default"); } -static const char *userdiff_word_regex(struct diff_filespec *one) +static const char *userdiff_word_regex(struct diff_filespec *one, + struct index_state *istate) { - diff_filespec_load_driver(one); + diff_filespec_load_driver(one, istate); return one->driver->word_regex; } @@ -1843,19 +2194,17 @@ static void init_diff_words_data(struct emit_callback *ecbdata, struct diff_options *o = xmalloc(sizeof(struct diff_options)); memcpy(o, orig_opts, sizeof(struct diff_options)); - ecbdata->diff_words = - xcalloc(1, sizeof(struct diff_words_data)); + CALLOC_ARRAY(ecbdata->diff_words, 1); ecbdata->diff_words->type = o->word_diff; ecbdata->diff_words->opt = o; if (orig_opts->emitted_symbols) - o->emitted_symbols = - xcalloc(1, sizeof(struct emitted_diff_symbols)); + CALLOC_ARRAY(o->emitted_symbols, 1); if (!o->word_regex) - o->word_regex = userdiff_word_regex(one); + o->word_regex = userdiff_word_regex(one, o->repo->index); if (!o->word_regex) - o->word_regex = userdiff_word_regex(two); + o->word_regex = userdiff_word_regex(two, o->repo->index); if (!o->word_regex) o->word_regex = diff_word_regex_cfg; if (o->word_regex) { @@ -1864,8 +2213,8 @@ static void init_diff_words_data(struct emit_callback *ecbdata, if (regcomp(ecbdata->diff_words->word_regex, o->word_regex, REG_EXTENDED | REG_NEWLINE)) - die ("Invalid regular expression: %s", - o->word_regex); + die("invalid regular expression: %s", + o->word_regex); } for (i = 0; i < ARRAY_SIZE(diff_words_styles); i++) { if (o->word_diff == diff_words_styles[i].type) { @@ -1886,7 +2235,7 @@ static void free_diff_words_data(struct emit_callback *ecbdata) { if (ecbdata->diff_words) { diff_words_flush(ecbdata); - free (ecbdata->diff_words->opt->emitted_symbols); + free_emitted_diff_symbols(ecbdata->diff_words->opt->emitted_symbols); free (ecbdata->diff_words->opt); free (ecbdata->diff_words->minus.text.ptr); free (ecbdata->diff_words->minus.orig); @@ -1917,7 +2266,7 @@ const char *diff_line_prefix(struct diff_options *opt) return msgbuf->buf; } -static unsigned long sane_truncate_line(struct emit_callback *ecb, char *line, unsigned long len) +static unsigned long sane_truncate_line(char *line, unsigned long len) { const char *cp; unsigned long allot; @@ -1948,10 +2297,9 @@ static void find_lno(const char *line, struct emit_callback *ecbdata) ecbdata->lno_in_postimage = strtol(p + 1, NULL, 10); } -static void fn_out_consume(void *priv, char *line, unsigned long len) +static int fn_out_consume(void *priv, char *line, unsigned long len) { struct emit_callback *ecbdata = priv; - const char *reset = diff_get_color(ecbdata->color_diff, DIFF_RESET); struct diff_options *o = ecbdata->opt; o->found_changes = 1; @@ -1982,10 +2330,10 @@ static void fn_out_consume(void *priv, char *line, unsigned long len) if (line[0] == '@') { if (ecbdata->diff_words) diff_words_flush(ecbdata); - len = sane_truncate_line(ecbdata, line, len); + len = sane_truncate_line(line, len); find_lno(line, ecbdata); emit_hunk_header(ecbdata, line, len); - return; + return 0; } if (ecbdata->diff_words) { @@ -1995,11 +2343,11 @@ static void fn_out_consume(void *priv, char *line, unsigned long len) if (line[0] == '-') { diff_words_append(line, len, &ecbdata->diff_words->minus); - return; + return 0; } else if (line[0] == '+') { diff_words_append(line, len, &ecbdata->diff_words->plus); - return; + return 0; } else if (starts_with(line, "\\ ")) { /* * Eat the "no newline at eof" marker as if we @@ -2008,26 +2356,26 @@ static void fn_out_consume(void *priv, char *line, unsigned long len) * defer processing. If this is the end of * preimage, more "+" lines may come after it. */ - return; + return 0; } diff_words_flush(ecbdata); emit_diff_symbol(o, s, line, len, 0); - return; + return 0; } switch (line[0]) { case '+': ecbdata->lno_in_postimage++; - emit_add_line(reset, ecbdata, line + 1, len - 1); + emit_add_line(ecbdata, line + 1, len - 1); break; case '-': ecbdata->lno_in_preimage++; - emit_del_line(reset, ecbdata, line + 1, len - 1); + emit_del_line(ecbdata, line + 1, len - 1); break; case ' ': ecbdata->lno_in_postimage++; ecbdata->lno_in_preimage++; - emit_context_line(reset, ecbdata, line + 1, len - 1); + emit_context_line(ecbdata, line + 1, len - 1); break; default: /* incomplete line at the end */ @@ -2036,6 +2384,7 @@ static void fn_out_consume(void *priv, char *line, unsigned long len) line, len, 0); break; } + return 0; } static void pprint_rename(struct strbuf *name, const char *a, const char *b) @@ -2115,28 +2464,12 @@ static void pprint_rename(struct strbuf *name, const char *a, const char *b) } } -struct diffstat_t { - int nr; - int alloc; - struct diffstat_file { - char *from_name; - char *name; - char *print_name; - const char *comments; - unsigned is_unmerged:1; - unsigned is_binary:1; - unsigned is_renamed:1; - unsigned is_interesting:1; - uintmax_t added, deleted; - } **files; -}; - static struct diffstat_file *diffstat_add(struct diffstat_t *diffstat, const char *name_a, const char *name_b) { struct diffstat_file *x; - x = xcalloc(1, sizeof(*x)); + CALLOC_ARRAY(x, 1); ALLOC_GROW(diffstat->files, diffstat->nr + 1, diffstat->alloc); diffstat->files[diffstat->nr++] = x; if (name_b) { @@ -2151,15 +2484,19 @@ static struct diffstat_file *diffstat_add(struct diffstat_t *diffstat, return x; } -static void diffstat_consume(void *priv, char *line, unsigned long len) +static int diffstat_consume(void *priv, char *line, unsigned long len) { struct diffstat_t *diffstat = priv; struct diffstat_file *x = diffstat->files[diffstat->nr - 1]; + if (!len) + BUG("xdiff fed us an empty line"); + if (line[0] == '+') x->added++; else if (line[0] == '-') x->deleted++; + return 0; } const char mime_boundary_leader[] = "------------"; @@ -2171,7 +2508,7 @@ static int scale_linear(int it, int width, int max_change) /* * make sure that at least one '-' or '+' is printed if * there is any change to this path. The easiest way is to - * scale linearly as if the alloted width is one column shorter + * scale linearly as if the allotted width is one column shorter * than it is, and then add 1 to the result. */ return 1 + (it * (width - 1) / max_change); @@ -2288,7 +2625,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options) continue; } fill_print_name(file); - len = strlen(file->print_name); + len = utf8_strwidth(file->print_name); if (max_len < len) max_len = len; @@ -2341,6 +2678,11 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options) * making the line longer than the maximum width. */ + /* + * NEEDSWORK: line_prefix is often used for "log --graph" output + * and contains ANSI-colored string. utf8_strnwidth() should be + * used to correctly count the display width instead of strlen(). + */ if (options->stat_width == -1) width = term_columns() - strlen(line_prefix); else @@ -2402,7 +2744,7 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options) char *name = file->print_name; uintmax_t added = file->added; uintmax_t deleted = file->deleted; - int name_len; + int name_len, padding; if (!file->is_interesting && (added + deleted == 0)) continue; @@ -2411,20 +2753,34 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options) * "scale" the filename */ len = name_width; - name_len = strlen(name); + name_len = utf8_strwidth(name); if (name_width < name_len) { char *slash; prefix = "..."; len -= 3; + /* + * NEEDSWORK: (name_len - len) counts the display + * width, which would be shorter than the byte + * length of the corresponding substring. + * Advancing "name" by that number of bytes does + * *NOT* skip over that many columns, so it is + * very likely that chomping the pathname at the + * slash we will find starting from "name" will + * leave the resulting string still too long. + */ name += name_len - len; slash = strchr(name, '/'); if (slash) name = slash; } + padding = len - utf8_strwidth(name); + if (padding < 0) + padding = 0; if (file->is_binary) { - strbuf_addf(&out, " %s%-*s |", prefix, len, name); - strbuf_addf(&out, " %*s", number_width, "Bin"); + strbuf_addf(&out, " %s%s%*s | %*s", + prefix, name, padding, "", + number_width, "Bin"); if (!added && !deleted) { strbuf_addch(&out, '\n'); emit_diff_symbol(options, DIFF_SYMBOL_STATS_LINE, @@ -2444,8 +2800,9 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options) continue; } else if (file->is_unmerged) { - strbuf_addf(&out, " %s%-*s |", prefix, len, name); - strbuf_addstr(&out, " Unmerged\n"); + strbuf_addf(&out, " %s%s%*s | %*s", + prefix, name, padding, "", + number_width, "Unmerged\n"); emit_diff_symbol(options, DIFF_SYMBOL_STATS_LINE, out.buf, out.len, 0); strbuf_reset(&out); @@ -2471,10 +2828,10 @@ static void show_stats(struct diffstat_t *data, struct diff_options *options) add = total - del; } } - strbuf_addf(&out, " %s%-*s |", prefix, len, name); - strbuf_addf(&out, " %*"PRIuMAX"%s", - number_width, added + deleted, - added + deleted ? " " : ""); + strbuf_addf(&out, " %s%s%*s | %*"PRIuMAX"%s", + prefix, name, padding, "", + number_width, added + deleted, + added + deleted ? " " : ""); show_graph(&out, '+', add, add_c, reset); show_graph(&out, '-', del, del_c, reset); strbuf_addch(&out, '\n'); @@ -2656,16 +3013,14 @@ static void show_dirstat(struct diff_options *options) struct diff_filepair *p = q->queue[i]; const char *name; unsigned long copied, added, damage; - int content_changed; + struct diff_populate_filespec_options dpf_options = { + .check_size_only = 1, + }; name = p->two->path ? p->two->path : p->one->path; - if (p->one->oid_valid && p->two->oid_valid) - content_changed = oidcmp(&p->one->oid, &p->two->oid); - else - content_changed = 1; - - if (!content_changed) { + if (p->one->oid_valid && p->two->oid_valid && + oideq(&p->one->oid, &p->two->oid)) { /* * The SHA1 has not changed, so pre-/post-content is * identical. We can therefore skip looking at the @@ -2688,18 +3043,19 @@ static void show_dirstat(struct diff_options *options) } if (DIFF_FILE_VALID(p->one) && DIFF_FILE_VALID(p->two)) { - diff_populate_filespec(p->one, 0); - diff_populate_filespec(p->two, 0); - diffcore_count_changes(p->one, p->two, NULL, NULL, + diff_populate_filespec(options->repo, p->one, NULL); + diff_populate_filespec(options->repo, p->two, NULL); + diffcore_count_changes(options->repo, + p->one, p->two, NULL, NULL, &copied, &added); diff_free_filespec_data(p->one); diff_free_filespec_data(p->two); } else if (DIFF_FILE_VALID(p->one)) { - diff_populate_filespec(p->one, CHECK_SIZE_ONLY); + diff_populate_filespec(options->repo, p->one, &dpf_options); copied = added = 0; diff_free_filespec_data(p->one); } else if (DIFF_FILE_VALID(p->two)) { - diff_populate_filespec(p->two, CHECK_SIZE_ONLY); + diff_populate_filespec(options->repo, p->two, &dpf_options); copied = 0; added = p->two->size; diff_free_filespec_data(p->two); @@ -2712,7 +3068,7 @@ static void show_dirstat(struct diff_options *options) * made to the preimage. * If the resulting damage is zero, we know that * diffcore_count_changes() considers the two entries to - * be identical, but since content_changed is true, we + * be identical, but since the oid changed, we * know that there must have been _some_ kind of change, * so we force all entries to have damage > 0. */ @@ -2781,16 +3137,19 @@ static void show_dirstat_by_line(struct diffstat_t *data, struct diff_options *o gather_dirstat(options, &dir, changed, "", 0); } -static void free_diffstat_info(struct diffstat_t *diffstat) +static void free_diffstat_file(struct diffstat_file *f) +{ + free(f->print_name); + free(f->name); + free(f->from_name); + free(f); +} + +void free_diffstat_info(struct diffstat_t *diffstat) { int i; - for (i = 0; i < diffstat->nr; i++) { - struct diffstat_file *f = diffstat->files[i]; - free(f->print_name); - free(f->name); - free(f->from_name); - free(f); - } + for (i = 0; i < diffstat->nr; i++) + free_diffstat_file(diffstat->files[i]); free(diffstat->files); } @@ -2820,13 +3179,23 @@ static int is_conflict_marker(const char *line, int marker_size, unsigned long l for (cnt = 1; cnt < marker_size; cnt++) if (line[cnt] != firstchar) return 0; - /* line[1] thru line[marker_size-1] are same as firstchar */ + /* line[1] through line[marker_size-1] are same as firstchar */ if (len < marker_size + 1 || !isspace(line[marker_size])) return 0; return 1; } -static void checkdiff_consume(void *priv, char *line, unsigned long len) +static void checkdiff_consume_hunk(void *priv, + long ob UNUSED, long on UNUSED, + long nb, long nn UNUSED, + const char *func UNUSED, long funclen UNUSED) + +{ + struct checkdiff_t *data = priv; + data->lineno = nb - 1; +} + +static int checkdiff_consume(void *priv, char *line, unsigned long len) { struct checkdiff_t *data = priv; int marker_size = data->conflict_marker_size; @@ -2850,7 +3219,7 @@ static void checkdiff_consume(void *priv, char *line, unsigned long len) } bad = ws_check(line + 1, len - 1, data->ws_rule); if (!bad) - return; + return 0; data->status |= bad; err = whitespace_error_string(bad); fprintf(data->o->file, "%s%s:%d: %s.\n", @@ -2861,13 +3230,8 @@ static void checkdiff_consume(void *priv, char *line, unsigned long len) data->o->file, set, reset, ws); } else if (line[0] == ' ') { data->lineno++; - } else if (line[0] == '@') { - char *plus = strchr(line, '+'); - if (plus) - data->lineno = strtol(plus, NULL, 10) - 1; - else - die("invalid diff"); } + return 0; } static unsigned char *deflate_it(char *data, @@ -2923,7 +3287,7 @@ static void emit_binary_diff_body(struct diff_options *o, } if (delta && delta_size < deflate_size) { - char *s = xstrfmt("%lu", orig_size); + char *s = xstrfmt("%"PRIuMAX , (uintmax_t)orig_size); emit_diff_symbol(o, DIFF_SYMBOL_BINARY_DIFF_HEADER_DELTA, s, strlen(s), 0); free(s); @@ -2973,15 +3337,20 @@ static void emit_binary_diff(struct diff_options *o, emit_binary_diff_body(o, two, one); } -int diff_filespec_is_binary(struct diff_filespec *one) +int diff_filespec_is_binary(struct repository *r, + struct diff_filespec *one) { + struct diff_populate_filespec_options dpf_options = { + .check_binary = 1, + }; + if (one->is_binary == -1) { - diff_filespec_load_driver(one); + diff_filespec_load_driver(one, r->index); if (one->driver->binary != -1) one->is_binary = one->driver->binary; else { if (!one->data && DIFF_FILE_VALID(one)) - diff_populate_filespec(one, CHECK_BINARY); + diff_populate_filespec(r, one, &dpf_options); if (one->is_binary == -1 && one->data) one->is_binary = buffer_is_binary(one->data, one->size); @@ -2992,9 +3361,10 @@ int diff_filespec_is_binary(struct diff_filespec *one) return one->is_binary; } -static const struct userdiff_funcname *diff_funcname_pattern(struct diff_filespec *one) +static const struct userdiff_funcname * +diff_funcname_pattern(struct diff_options *o, struct diff_filespec *one) { - diff_filespec_load_driver(one); + diff_filespec_load_driver(one, o->repo->index); return one->driver->funcname.pattern ? &one->driver->funcname : NULL; } @@ -3006,13 +3376,83 @@ void diff_set_mnemonic_prefix(struct diff_options *options, const char *a, const options->b_prefix = b; } -struct userdiff_driver *get_textconv(struct diff_filespec *one) +struct userdiff_driver *get_textconv(struct repository *r, + struct diff_filespec *one) { if (!DIFF_FILE_VALID(one)) return NULL; - diff_filespec_load_driver(one); - return userdiff_get_textconv(one->driver); + diff_filespec_load_driver(one, r->index); + return userdiff_get_textconv(r, one->driver); +} + +static struct string_list *additional_headers(struct diff_options *o, + const char *path) +{ + if (!o->additional_path_headers) + return NULL; + return strmap_get(o->additional_path_headers, path); +} + +static void add_formatted_header(struct strbuf *msg, + const char *header, + const char *line_prefix, + const char *meta, + const char *reset) +{ + const char *next, *newline; + + for (next = header; *next; next = newline) { + newline = strchrnul(next, '\n'); + strbuf_addf(msg, "%s%s%.*s%s\n", line_prefix, meta, + (int)(newline - next), next, reset); + if (*newline) + newline++; + } +} + +static void add_formatted_headers(struct strbuf *msg, + struct string_list *more_headers, + const char *line_prefix, + const char *meta, + const char *reset) +{ + int i; + + for (i = 0; i < more_headers->nr; i++) + add_formatted_header(msg, more_headers->items[i].string, + line_prefix, meta, reset); +} + +static int diff_filepair_is_phoney(struct diff_filespec *one, + struct diff_filespec *two) +{ + /* + * This function specifically looks for pairs injected by + * create_filepairs_for_header_only_notifications(). Such + * pairs are "phoney" in that they do not represent any + * content or even mode difference, but were inserted because + * diff_queued_diff previously had no pair associated with + * that path but we needed some pair to avoid losing the + * "remerge CONFLICT" header associated with the path. + */ + return !DIFF_FILE_VALID(one) && !DIFF_FILE_VALID(two); +} + +static int set_diff_algorithm(struct diff_options *opts, + const char *alg) +{ + long value = parse_algorithm_value(alg); + + if (value < 0) + return -1; + + /* clear out previous settings */ + DIFF_XDL_CLR(opts, NEED_MINIMAL); + opts->xdl_opts &= ~XDF_DIFF_ALGORITHM_MASK; + opts->xdl_opts |= value; + + return 0; } static void builtin_diff(const char *name_a, @@ -3046,14 +3486,16 @@ static void builtin_diff(const char *name_a, if (o->submodule_format == DIFF_SUBMODULE_LOG && (!one->mode || S_ISGITLINK(one->mode)) && - (!two->mode || S_ISGITLINK(two->mode))) { - show_submodule_summary(o, one->path ? one->path : two->path, + (!two->mode || S_ISGITLINK(two->mode)) && + (!diff_filepair_is_phoney(one, two))) { + show_submodule_diff_summary(o, one->path ? one->path : two->path, &one->oid, &two->oid, two->dirty_submodule); return; } else if (o->submodule_format == DIFF_SUBMODULE_INLINE_DIFF && (!one->mode || S_ISGITLINK(one->mode)) && - (!two->mode || S_ISGITLINK(two->mode))) { + (!two->mode || S_ISGITLINK(two->mode)) && + (!diff_filepair_is_phoney(one, two))) { show_submodule_inline_diff(o, one->path ? one->path : two->path, &one->oid, &two->oid, two->dirty_submodule); @@ -3061,8 +3503,8 @@ static void builtin_diff(const char *name_a, } if (o->flags.allow_textconv) { - textconv_one = get_textconv(one); - textconv_two = get_textconv(two); + textconv_one = get_textconv(o->repo, one); + textconv_two = get_textconv(o->repo, two); } /* Never use a non-valid filename anywhere if at all possible */ @@ -3073,6 +3515,17 @@ static void builtin_diff(const char *name_a, b_two = quote_two(b_prefix, name_b + (*name_b == '/')); lbl[0] = DIFF_FILE_VALID(one) ? a_one : "/dev/null"; lbl[1] = DIFF_FILE_VALID(two) ? b_two : "/dev/null"; + if (diff_filepair_is_phoney(one, two)) { + /* + * We should only reach this point for pairs generated from + * create_filepairs_for_header_only_notifications(). For + * these, we want to avoid the "/dev/null" special casing + * above, because we do not want such pairs shown as either + * "new file" or "deleted file" below. + */ + lbl[0] = a_one; + lbl[1] = b_two; + } strbuf_addf(&header, "%s%sdiff --git %s %s%s\n", line_prefix, meta, a_one, b_two, reset); if (lbl[0][0] == '/') { /* /dev/null */ @@ -3103,13 +3556,13 @@ static void builtin_diff(const char *name_a, if ((one->mode ^ two->mode) & S_IFMT) goto free_ab_and_return; if (complete_rewrite && - (textconv_one || !diff_filespec_is_binary(one)) && - (textconv_two || !diff_filespec_is_binary(two))) { + (textconv_one || !diff_filespec_is_binary(o->repo, one)) && + (textconv_two || !diff_filespec_is_binary(o->repo, two))) { emit_diff_symbol(o, DIFF_SYMBOL_HEADER, header.buf, header.len, 0); strbuf_reset(&header); emit_rewrite_diff(name_a, name_b, one, two, - textconv_one, textconv_two, o); + textconv_one, textconv_two, o); o->found_changes = 1; goto free_ab_and_return; } @@ -3121,13 +3574,13 @@ static void builtin_diff(const char *name_a, strbuf_reset(&header); goto free_ab_and_return; } else if (!o->flags.text && - ( (!textconv_one && diff_filespec_is_binary(one)) || - (!textconv_two && diff_filespec_is_binary(two)) )) { + ( (!textconv_one && diff_filespec_is_binary(o->repo, one)) || + (!textconv_two && diff_filespec_is_binary(o->repo, two)) )) { struct strbuf sb = STRBUF_INIT; if (!one->data && !two->data && S_ISREG(one->mode) && S_ISREG(two->mode) && !o->flags.binary) { - if (!oidcmp(&one->oid, &two->oid)) { + if (oideq(&one->oid, &two->oid)) { if (must_show_header) emit_diff_symbol(o, DIFF_SYMBOL_HEADER, header.buf, header.len, @@ -3143,7 +3596,8 @@ static void builtin_diff(const char *name_a, strbuf_release(&sb); goto free_ab_and_return; } - if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0) + if (fill_mmfile(o->repo, &mf1, one) < 0 || + fill_mmfile(o->repo, &mf2, two) < 0) die("unable to read files to diff"); /* Quite common confusing case */ if (mf1.size == mf2.size && @@ -3167,7 +3621,7 @@ static void builtin_diff(const char *name_a, o->found_changes = 1; } else { /* Crazy xdl interfaces.. */ - const char *diffopts = getenv("GIT_DIFF_OPTS"); + const char *diffopts; const char *v; xpparam_t xpp; xdemitconf_t xecfg; @@ -3180,24 +3634,29 @@ static void builtin_diff(const char *name_a, strbuf_reset(&header); } - mf1.size = fill_textconv(textconv_one, one, &mf1.ptr); - mf2.size = fill_textconv(textconv_two, two, &mf2.ptr); + mf1.size = fill_textconv(o->repo, textconv_one, one, &mf1.ptr); + mf2.size = fill_textconv(o->repo, textconv_two, two, &mf2.ptr); - pe = diff_funcname_pattern(one); + pe = diff_funcname_pattern(o, one); if (!pe) - pe = diff_funcname_pattern(two); + pe = diff_funcname_pattern(o, two); memset(&xpp, 0, sizeof(xpp)); memset(&xecfg, 0, sizeof(xecfg)); memset(&ecbdata, 0, sizeof(ecbdata)); + if (o->flags.suppress_diff_headers) + lbl[0] = NULL; ecbdata.label_path = lbl; ecbdata.color_diff = want_color(o->use_color); - ecbdata.ws_rule = whitespace_rule(name_b); + ecbdata.ws_rule = whitespace_rule(o->repo->index, name_b); if (ecbdata.ws_rule & WS_BLANK_AT_EOF) check_blank_at_eof(&mf1, &mf2, &ecbdata); ecbdata.opt = o; - ecbdata.header = header.len ? &header : NULL; + if (header.len && !o->flags.suppress_diff_headers) + ecbdata.header = &header; xpp.flags = o->xdl_opts; + xpp.ignore_regex = o->ignore_regex; + xpp.ignore_regex_nr = o->ignore_regex_nr; xpp.anchors = o->anchors; xpp.anchors_nr = o->anchors_nr; xecfg.ctxlen = o->context; @@ -3207,16 +3666,19 @@ static void builtin_diff(const char *name_a, xecfg.flags |= XDL_EMIT_FUNCCONTEXT; if (pe) xdiff_set_find_func(&xecfg, pe->pattern, pe->cflags); + + diffopts = getenv("GIT_DIFF_OPTS"); if (!diffopts) ; else if (skip_prefix(diffopts, "--unified=", &v)) xecfg.ctxlen = strtoul(v, NULL, 10); else if (skip_prefix(diffopts, "-u", &v)) xecfg.ctxlen = strtoul(v, NULL, 10); + if (o->word_diff) init_diff_words_data(&ecbdata, o, one, two); - if (xdi_diff_outf(&mf1, &mf2, fn_out_consume, &ecbdata, - &xpp, &xecfg)) + if (xdi_diff_outf(&mf1, &mf2, NULL, fn_out_consume, + &ecbdata, &xpp, &xecfg)) die("unable to generate diff for %s", one->path); if (o->word_diff) free_diff_words_data(&ecbdata); @@ -3271,7 +3733,7 @@ static void builtin_diffstat(const char *name_a, const char *name_b, { mmfile_t mf1, mf2; struct diffstat_file *data; - int same_contents; + int may_differ; int complete_rewrite = 0; if (!DIFF_PAIR_UNMERGED(p)) { @@ -3289,44 +3751,72 @@ static void builtin_diffstat(const char *name_a, const char *name_b, return; } - same_contents = !oidcmp(&one->oid, &two->oid); + /* saves some reads if true, not a guarantee of diff outcome */ + may_differ = !(one->oid_valid && two->oid_valid && + oideq(&one->oid, &two->oid)); - if (diff_filespec_is_binary(one) || diff_filespec_is_binary(two)) { + if (diff_filespec_is_binary(o->repo, one) || + diff_filespec_is_binary(o->repo, two)) { data->is_binary = 1; - if (same_contents) { + if (!may_differ) { data->added = 0; data->deleted = 0; } else { - data->added = diff_filespec_size(two); - data->deleted = diff_filespec_size(one); + data->added = diff_filespec_size(o->repo, two); + data->deleted = diff_filespec_size(o->repo, one); } } else if (complete_rewrite) { - diff_populate_filespec(one, 0); - diff_populate_filespec(two, 0); + diff_populate_filespec(o->repo, one, NULL); + diff_populate_filespec(o->repo, two, NULL); data->deleted = count_lines(one->data, one->size); data->added = count_lines(two->data, two->size); } - else if (!same_contents) { + else if (may_differ) { /* Crazy xdl interfaces.. */ xpparam_t xpp; xdemitconf_t xecfg; - if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0) + if (fill_mmfile(o->repo, &mf1, one) < 0 || + fill_mmfile(o->repo, &mf2, two) < 0) die("unable to read files to diff"); memset(&xpp, 0, sizeof(xpp)); memset(&xecfg, 0, sizeof(xecfg)); xpp.flags = o->xdl_opts; + xpp.ignore_regex = o->ignore_regex; + xpp.ignore_regex_nr = o->ignore_regex_nr; xpp.anchors = o->anchors; xpp.anchors_nr = o->anchors_nr; xecfg.ctxlen = o->context; xecfg.interhunkctxlen = o->interhunkcontext; - if (xdi_diff_outf(&mf1, &mf2, diffstat_consume, diffstat, - &xpp, &xecfg)) + xecfg.flags = XDL_EMIT_NO_HUNK_HDR; + if (xdi_diff_outf(&mf1, &mf2, NULL, + diffstat_consume, diffstat, &xpp, &xecfg)) die("unable to generate diffstat for %s", one->path); + + if (DIFF_FILE_VALID(one) && DIFF_FILE_VALID(two)) { + struct diffstat_file *file = + diffstat->files[diffstat->nr - 1]; + /* + * Omit diffstats of modified files where nothing changed. + * Even if may_differ, this might be the case due to + * ignoring whitespace changes, etc. + * + * But note that we special-case additions, deletions, + * renames, and mode changes as adding an empty file, + * for example is still of interest. + */ + if ((p->status == DIFF_STATUS_MODIFIED) + && !file->added + && !file->deleted + && one->mode == two->mode) { + free_diffstat_file(file); + diffstat->nr--; + } + } } diff_free_filespec_data(one); @@ -3349,10 +3839,11 @@ static void builtin_checkdiff(const char *name_a, const char *name_b, data.filename = name_b ? name_b : name_a; data.lineno = 0; data.o = o; - data.ws_rule = whitespace_rule(attr_path); - data.conflict_marker_size = ll_merge_marker_size(attr_path); + data.ws_rule = whitespace_rule(o->repo->index, attr_path); + data.conflict_marker_size = ll_merge_marker_size(o->repo->index, attr_path); - if (fill_mmfile(&mf1, one) < 0 || fill_mmfile(&mf2, two) < 0) + if (fill_mmfile(o->repo, &mf1, one) < 0 || + fill_mmfile(o->repo, &mf2, two) < 0) die("unable to read files to diff"); /* @@ -3361,7 +3852,7 @@ static void builtin_checkdiff(const char *name_a, const char *name_b, * introduced changes, and as long as the "new" side is text, we * can and should check what it introduces. */ - if (diff_filespec_is_binary(two)) + if (diff_filespec_is_binary(o->repo, two)) goto free_and_return; else { /* Crazy xdl interfaces.. */ @@ -3372,7 +3863,8 @@ static void builtin_checkdiff(const char *name_a, const char *name_b, memset(&xecfg, 0, sizeof(xecfg)); xecfg.ctxlen = 1; /* at least one context line */ xpp.flags = 0; - if (xdi_diff_outf(&mf1, &mf2, checkdiff_consume, &data, + if (xdi_diff_outf(&mf1, &mf2, checkdiff_consume_hunk, + checkdiff_consume, &data, &xpp, &xecfg)) die("unable to generate checkdiff for %s", one->path); @@ -3434,7 +3926,10 @@ void fill_filespec(struct diff_filespec *spec, const struct object_id *oid, * the work tree has that object contents, return true, so that * prepare_temp_file() does not have to inflate and extract. */ -static int reuse_worktree_file(const char *name, const struct object_id *oid, int want_file) +static int reuse_worktree_file(struct index_state *istate, + const char *name, + const struct object_id *oid, + int want_file) { const struct cache_entry *ce; struct stat st; @@ -3453,7 +3948,7 @@ static int reuse_worktree_file(const char *name, const struct object_id *oid, in * by diff-cache --cached, which does read the cache before * calling us. */ - if (!active_cache) + if (!istate->cache) return 0; /* We want to avoid the working directory if our caller @@ -3472,20 +3967,27 @@ static int reuse_worktree_file(const char *name, const struct object_id *oid, in * Similarly, if we'd have to convert the file contents anyway, that * makes the optimization not worthwhile. */ - if (!want_file && would_convert_to_git(&the_index, name)) + if (!want_file && would_convert_to_git(istate, name)) + return 0; + + /* + * If this path does not match our sparse-checkout definition, + * then the file will not be in the working directory. + */ + if (!path_in_sparse_checkout(name, istate)) return 0; len = strlen(name); - pos = cache_name_pos(name, len); + pos = index_name_pos(istate, name, len); if (pos < 0) return 0; - ce = active_cache[pos]; + ce = istate->cache[pos]; /* * This is not the sha1 we are looking for, or * unreusable because it is not a regular file. */ - if (oidcmp(oid, &ce->oid) || !S_ISREG(ce->ce_mode)) + if (!oideq(oid, &ce->oid) || !S_ISREG(ce->ce_mode)) return 0; /* @@ -3499,7 +4001,7 @@ static int reuse_worktree_file(const char *name, const struct object_id *oid, in * If ce matches the file in the work tree, we can reuse it. */ if (ce_uptodate(ce) || - (!lstat(name, &st) && !ce_match_stat(ce, &st, 0))) + (!lstat(name, &st) && !ie_match_stat(istate, ce, &st, 0))) return 1; return 0; @@ -3532,9 +4034,12 @@ static int diff_populate_gitlink(struct diff_filespec *s, int size_only) * grab the data for the blob (or file) for our own in-core comparison. * diff_filespec has data and size fields for this purpose. */ -int diff_populate_filespec(struct diff_filespec *s, unsigned int flags) +int diff_populate_filespec(struct repository *r, + struct diff_filespec *s, + const struct diff_populate_filespec_options *options) { - int size_only = flags & CHECK_SIZE_ONLY; + int size_only = options ? options->check_size_only : 0; + int check_binary = options ? options->check_binary : 0; int err = 0; int conv_flags = global_conv_flags_eol; /* @@ -3559,7 +4064,7 @@ int diff_populate_filespec(struct diff_filespec *s, unsigned int flags) return diff_populate_gitlink(s, size_only); if (!s->oid_valid || - reuse_worktree_file(s->path, &s->oid, 0)) { + reuse_worktree_file(r->index, s->path, &s->oid, 0)) { struct strbuf buf = STRBUF_INIT; struct stat st; int fd; @@ -3592,7 +4097,7 @@ int diff_populate_filespec(struct diff_filespec *s, unsigned int flags) * point if the path requires us to run the content * conversion. */ - if (size_only && !would_convert_to_git(&the_index, s->path)) + if (size_only && !would_convert_to_git(r->index, s->path)) return 0; /* @@ -3604,7 +4109,7 @@ int diff_populate_filespec(struct diff_filespec *s, unsigned int flags) * opening the file and inspecting the contents, this * is probably fine. */ - if ((flags & CHECK_BINARY) && + if (check_binary && s->size > big_file_threshold && s->is_binary == -1) { s->is_binary = 1; return 0; @@ -3619,7 +4124,7 @@ int diff_populate_filespec(struct diff_filespec *s, unsigned int flags) /* * Convert from working tree format to canonical git format */ - if (convert_to_git(&the_index, s->path, s->data, s->size, &buf, conv_flags)) { + if (convert_to_git(r->index, s->path, s->data, s->size, &buf, conv_flags)) { size_t size = 0; munmap(s->data, s->size); s->should_munmap = 0; @@ -3629,13 +4134,30 @@ int diff_populate_filespec(struct diff_filespec *s, unsigned int flags) } } else { - enum object_type type; - if (size_only || (flags & CHECK_BINARY)) { - type = oid_object_info(the_repository, &s->oid, - &s->size); - if (type < 0) - die("unable to read %s", - oid_to_hex(&s->oid)); + struct object_info info = { + .sizep = &s->size + }; + + if (!(size_only || check_binary)) + /* + * Set contentp, since there is no chance that merely + * the size is sufficient. + */ + info.contentp = &s->data; + + if (options && options->missing_object_cb) { + if (!oid_object_info_extended(r, &s->oid, &info, + OBJECT_INFO_LOOKUP_REPLACE | + OBJECT_INFO_SKIP_FETCH_OBJECT)) + goto object_read; + options->missing_object_cb(options->missing_object_data); + } + if (oid_object_info_extended(r, &s->oid, &info, + OBJECT_INFO_LOOKUP_REPLACE)) + die("unable to read %s", oid_to_hex(&s->oid)); + +object_read: + if (size_only || check_binary) { if (size_only) return 0; if (s->size > big_file_threshold && s->is_binary == -1) { @@ -3643,9 +4165,12 @@ int diff_populate_filespec(struct diff_filespec *s, unsigned int flags) return 0; } } - s->data = read_object_file(&s->oid, &type, &s->size); - if (!s->data) - die("unable to read %s", oid_to_hex(&s->oid)); + if (!info.contentp) { + info.contentp = &s->data; + if (oid_object_info_extended(r, &s->oid, &info, + OBJECT_INFO_LOOKUP_REPLACE)) + die("unable to read %s", oid_to_hex(&s->oid)); + } s->should_free = 1; } return 0; @@ -3666,30 +4191,32 @@ void diff_free_filespec_blob(struct diff_filespec *s) void diff_free_filespec_data(struct diff_filespec *s) { + if (!s) + return; + diff_free_filespec_blob(s); FREE_AND_NULL(s->cnt_data); } -static void prep_temp_blob(const char *path, struct diff_tempfile *temp, +static void prep_temp_blob(struct index_state *istate, + const char *path, struct diff_tempfile *temp, void *blob, unsigned long size, const struct object_id *oid, int mode) { struct strbuf buf = STRBUF_INIT; - struct strbuf tempfile = STRBUF_INIT; char *path_dup = xstrdup(path); const char *base = basename(path_dup); + struct checkout_metadata meta; - /* Generate "XXXXXX_basename.ext" */ - strbuf_addstr(&tempfile, "XXXXXX_"); - strbuf_addstr(&tempfile, base); + init_checkout_metadata(&meta, NULL, NULL, oid); - temp->tempfile = mks_tempfile_ts(tempfile.buf, strlen(base) + 1); + temp->tempfile = mks_tempfile_dt("git-blob-XXXXXX", base); if (!temp->tempfile) die_errno("unable to create temp-file"); - if (convert_to_working_tree(path, - (const char *)blob, (size_t)size, &buf)) { + if (convert_to_working_tree(istate, path, + (const char *)blob, (size_t)size, &buf, &meta)) { blob = buf.buf; size = buf.len; } @@ -3700,12 +4227,11 @@ static void prep_temp_blob(const char *path, struct diff_tempfile *temp, oid_to_hex_r(temp->hex, oid); xsnprintf(temp->mode, sizeof(temp->mode), "%06o", mode); strbuf_release(&buf); - strbuf_release(&tempfile); free(path_dup); } -static struct diff_tempfile *prepare_temp_file(const char *name, - struct diff_filespec *one) +static struct diff_tempfile *prepare_temp_file(struct repository *r, + struct diff_filespec *one) { struct diff_tempfile *temp = claim_diff_tempfile(); @@ -3722,29 +4248,29 @@ static struct diff_tempfile *prepare_temp_file(const char *name, if (!S_ISGITLINK(one->mode) && (!one->oid_valid || - reuse_worktree_file(name, &one->oid, 1))) { + reuse_worktree_file(r->index, one->path, &one->oid, 1))) { struct stat st; - if (lstat(name, &st) < 0) { + if (lstat(one->path, &st) < 0) { if (errno == ENOENT) goto not_a_valid_file; - die_errno("stat(%s)", name); + die_errno("stat(%s)", one->path); } if (S_ISLNK(st.st_mode)) { struct strbuf sb = STRBUF_INIT; - if (strbuf_readlink(&sb, name, st.st_size) < 0) - die_errno("readlink(%s)", name); - prep_temp_blob(name, temp, sb.buf, sb.len, + if (strbuf_readlink(&sb, one->path, st.st_size) < 0) + die_errno("readlink(%s)", one->path); + prep_temp_blob(r->index, one->path, temp, sb.buf, sb.len, (one->oid_valid ? - &one->oid : &null_oid), + &one->oid : null_oid()), (one->oid_valid ? one->mode : S_IFLNK)); strbuf_release(&sb); } else { /* we can borrow from the file in the work tree */ - temp->name = name; + temp->name = one->path; if (!one->oid_valid) - oid_to_hex_r(temp->hex, &null_oid); + oid_to_hex_r(temp->hex, null_oid()); else oid_to_hex_r(temp->hex, &one->oid); /* Even though we may sometimes borrow the @@ -3758,22 +4284,23 @@ static struct diff_tempfile *prepare_temp_file(const char *name, return temp; } else { - if (diff_populate_filespec(one, 0)) + if (diff_populate_filespec(r, one, NULL)) die("cannot read data blob for %s", one->path); - prep_temp_blob(name, temp, one->data, one->size, + prep_temp_blob(r->index, one->path, temp, + one->data, one->size, &one->oid, one->mode); } return temp; } -static void add_external_diff_name(struct argv_array *argv, - const char *name, +static void add_external_diff_name(struct repository *r, + struct strvec *argv, struct diff_filespec *df) { - struct diff_tempfile *temp = prepare_temp_file(name, df); - argv_array_push(argv, temp->name); - argv_array_push(argv, temp->hex); - argv_array_push(argv, temp->mode); + struct diff_tempfile *temp = prepare_temp_file(r, df); + strvec_push(argv, temp->name); + strvec_push(argv, temp->hex); + strvec_push(argv, temp->mode); } /* An external diff command takes: @@ -3788,36 +4315,34 @@ static void run_external_diff(const char *pgm, struct diff_filespec *one, struct diff_filespec *two, const char *xfrm_msg, - int complete_rewrite, struct diff_options *o) { - struct argv_array argv = ARGV_ARRAY_INIT; - struct argv_array env = ARGV_ARRAY_INIT; + struct child_process cmd = CHILD_PROCESS_INIT; struct diff_queue_struct *q = &diff_queued_diff; - argv_array_push(&argv, pgm); - argv_array_push(&argv, name); + strvec_push(&cmd.args, pgm); + strvec_push(&cmd.args, name); if (one && two) { - add_external_diff_name(&argv, name, one); - if (!other) - add_external_diff_name(&argv, name, two); - else { - add_external_diff_name(&argv, other, two); - argv_array_push(&argv, other); - argv_array_push(&argv, xfrm_msg); + add_external_diff_name(o->repo, &cmd.args, one); + add_external_diff_name(o->repo, &cmd.args, two); + if (other) { + strvec_push(&cmd.args, other); + strvec_push(&cmd.args, xfrm_msg); } } - argv_array_pushf(&env, "GIT_DIFF_PATH_COUNTER=%d", ++o->diff_path_counter); - argv_array_pushf(&env, "GIT_DIFF_PATH_TOTAL=%d", q->nr); + strvec_pushf(&cmd.env, "GIT_DIFF_PATH_COUNTER=%d", + ++o->diff_path_counter); + strvec_pushf(&cmd.env, "GIT_DIFF_PATH_TOTAL=%d", q->nr); - if (run_command_v_opt_cd_env(argv.argv, RUN_USING_SHELL, NULL, env.argv)) + diff_free_filespec_data(one); + diff_free_filespec_data(two); + cmd.use_shell = 1; + if (run_command(&cmd)) die(_("external diff died, stopping at %s"), name); remove_tempfile(); - argv_array_clear(&argv); - argv_array_clear(&env); } static int similarity_index(struct diff_filepair *p) @@ -3833,7 +4358,7 @@ static const char *diff_abbrev_oid(const struct object_id *oid, int abbrev) char *hex = oid_to_hex(oid); if (abbrev < 0) abbrev = FALLBACK_DEFAULT_ABBREV; - if (abbrev > GIT_SHA1_HEXSZ) + if (abbrev > the_hash_algo->hexsz) BUG("oid abbreviation out of range: %d", abbrev); if (abbrev) hex[abbrev] = '\0'; @@ -3854,6 +4379,7 @@ static void fill_metainfo(struct strbuf *msg, const char *set = diff_get_color(use_color, DIFF_METAINFO); const char *reset = diff_get_color(use_color, DIFF_RESET); const char *line_prefix = diff_line_prefix(o); + struct string_list *more_headers = NULL; *must_show_header = 1; strbuf_init(msg, PATH_MAX * 2 + 300); @@ -3890,14 +4416,24 @@ static void fill_metainfo(struct strbuf *msg, default: *must_show_header = 0; } - if (one && two && oidcmp(&one->oid, &two->oid)) { + if ((more_headers = additional_headers(o, name))) { + add_formatted_headers(msg, more_headers, + line_prefix, set, reset); + *must_show_header = 1; + } + if (one && two && !oideq(&one->oid, &two->oid)) { const unsigned hexsz = the_hash_algo->hexsz; - int abbrev = o->flags.full_index ? hexsz : DEFAULT_ABBREV; + int abbrev = o->abbrev ? o->abbrev : DEFAULT_ABBREV; + + if (o->flags.full_index) + abbrev = hexsz; if (o->flags.binary) { mmfile_t mf; - if ((!fill_mmfile(&mf, one) && diff_filespec_is_binary(one)) || - (!fill_mmfile(&mf, two) && diff_filespec_is_binary(two))) + if ((!fill_mmfile(o->repo, &mf, one) && + diff_filespec_is_binary(o->repo, one)) || + (!fill_mmfile(o->repo, &mf, two) && + diff_filespec_is_binary(o->repo, two))) abbrev = hexsz; } strbuf_addf(msg, "%s%sindex %s..%s", line_prefix, set, @@ -3922,13 +4458,13 @@ static void run_diff_cmd(const char *pgm, const char *xfrm_msg = NULL; int complete_rewrite = (p->status == DIFF_STATUS_MODIFIED) && p->score; int must_show_header = 0; + struct userdiff_driver *drv = NULL; + if (o->flags.allow_external || !o->ignore_driver_algorithm) + drv = userdiff_find_by_path(o->repo->index, attr_path); - if (o->flags.allow_external) { - struct userdiff_driver *drv = userdiff_find_by_path(attr_path); - if (drv && drv->external) - pgm = drv->external; - } + if (o->flags.allow_external && drv && drv->external) + pgm = drv->external; if (msg) { /* @@ -3942,19 +4478,22 @@ static void run_diff_cmd(const char *pgm, } if (pgm) { - run_external_diff(pgm, name, other, one, two, xfrm_msg, - complete_rewrite, o); + run_external_diff(pgm, name, other, one, two, xfrm_msg, o); return; } - if (one && two) + if (one && two) { + if (!o->ignore_driver_algorithm && drv && drv->algorithm) + set_diff_algorithm(o, drv->algorithm); + builtin_diff(name, other ? other : name, one, two, xfrm_msg, must_show_header, o, complete_rewrite); - else + } else { fprintf(o->file, "* Unmerged path %s\n", name); + } } -static void diff_fill_oid_info(struct diff_filespec *one) +static void diff_fill_oid_info(struct diff_filespec *one, struct index_state *istate) { if (DIFF_FILE_VALID(one)) { if (!one->oid_valid) { @@ -3965,7 +4504,7 @@ static void diff_fill_oid_info(struct diff_filespec *one) } if (lstat(one->path, &st) < 0) die_errno("stat '%s'", one->path); - if (index_path(&one->oid, one->path, &st, 0)) + if (index_path(istate, &one->oid, one->path, &st, 0)) die("cannot hash %s", one->path); } } @@ -3976,12 +4515,12 @@ static void diff_fill_oid_info(struct diff_filespec *one) static void strip_prefix(int prefix_length, const char **namep, const char **otherp) { /* Strip the prefix but do not molest /dev/null and absolute paths */ - if (*namep && **namep != '/') { + if (*namep && !is_absolute_path(*namep)) { *namep += prefix_length; if (**namep == '/') ++*namep; } - if (*otherp && **otherp != '/') { + if (*otherp && !is_absolute_path(*otherp)) { *otherp += prefix_length; if (**otherp == '/') ++*otherp; @@ -4013,8 +4552,8 @@ static void run_diff(struct diff_filepair *p, struct diff_options *o) return; } - diff_fill_oid_info(one); - diff_fill_oid_info(two); + diff_fill_oid_info(one, o->repo->index); + diff_fill_oid_info(two, o->repo->index); if (!pgm && DIFF_FILE_VALID(one) && DIFF_FILE_VALID(two) && @@ -4025,7 +4564,8 @@ static void run_diff(struct diff_filepair *p, struct diff_options *o) */ struct diff_filespec *null = alloc_filespec(two->path); run_diff_cmd(NULL, name, other, attr_path, - one, null, &msg, o, p); + one, null, &msg, + o, p); free(null); strbuf_release(&msg); @@ -4047,9 +4587,18 @@ static void run_diffstat(struct diff_filepair *p, struct diff_options *o, const char *name; const char *other; + if (!o->ignore_driver_algorithm) { + struct userdiff_driver *drv = userdiff_find_by_path(o->repo->index, + p->one->path); + + if (drv && drv->algorithm) + set_diff_algorithm(o, drv->algorithm); + } + if (DIFF_PAIR_UNMERGED(p)) { /* unmerged */ - builtin_diffstat(p->one->path, NULL, NULL, NULL, diffstat, o, p); + builtin_diffstat(p->one->path, NULL, NULL, NULL, + diffstat, o, p); return; } @@ -4059,10 +4608,11 @@ static void run_diffstat(struct diff_filepair *p, struct diff_options *o, if (o->prefix_length) strip_prefix(o->prefix_length, &name, &other); - diff_fill_oid_info(p->one); - diff_fill_oid_info(p->two); + diff_fill_oid_info(p->one, o->repo->index); + diff_fill_oid_info(p->two, o->repo->index); - builtin_diffstat(name, other, p->one, p->two, diffstat, o, p); + builtin_diffstat(name, other, p->one, p->two, + diffstat, o, p); } static void run_checkdiff(struct diff_filepair *p, struct diff_options *o) @@ -4083,18 +4633,22 @@ static void run_checkdiff(struct diff_filepair *p, struct diff_options *o) if (o->prefix_length) strip_prefix(o->prefix_length, &name, &other); - diff_fill_oid_info(p->one); - diff_fill_oid_info(p->two); + diff_fill_oid_info(p->one, o->repo->index); + diff_fill_oid_info(p->two, o->repo->index); builtin_checkdiff(name, other, attr_path, p->one, p->two, o); } -void diff_setup(struct diff_options *options) +void repo_diff_setup(struct repository *r, struct diff_options *options) { memcpy(options, &default_diff_options, sizeof(*options)); options->file = stdout; + options->repo = r; + options->output_indicators[OUTPUT_INDICATOR_NEW] = '+'; + options->output_indicators[OUTPUT_INDICATOR_OLD] = '-'; + options->output_indicators[OUTPUT_INDICATOR_CONTEXT] = ' '; options->abbrev = DEFAULT_ABBREV; options->line_termination = '\n'; options->break_opt = -1; @@ -4104,6 +4658,7 @@ void diff_setup(struct diff_options *options) options->interhunkcontext = diff_interhunk_context_default; options->ws_error_highlight = ws_error_highlight_default; options->flags.rename_empty = 1; + options->flags.relative_name = diff_relative; options->objfind = NULL; /* pathchange left =NULL by default */ @@ -4117,6 +4672,9 @@ void diff_setup(struct diff_options *options) options->orderfile = diff_order_file_cfg; + if (!options->flags.ignore_submodule_set) + options->flags.ignore_untracked_in_submodules = 1; + if (diff_no_prefix) { options->a_prefix = options->b_prefix = ""; } else if (!diff_mnemonic_prefix) { @@ -4125,6 +4683,44 @@ void diff_setup(struct diff_options *options) } options->color_moved = diff_color_moved_default; + options->color_moved_ws_handling = diff_color_moved_ws_default; +} + +static const char diff_status_letters[] = { + DIFF_STATUS_ADDED, + DIFF_STATUS_COPIED, + DIFF_STATUS_DELETED, + DIFF_STATUS_MODIFIED, + DIFF_STATUS_RENAMED, + DIFF_STATUS_TYPE_CHANGED, + DIFF_STATUS_UNKNOWN, + DIFF_STATUS_UNMERGED, + DIFF_STATUS_FILTER_AON, + DIFF_STATUS_FILTER_BROKEN, + '\0', +}; + +static unsigned int filter_bit['Z' + 1]; + +static void prepare_filter_bits(void) +{ + int i; + + if (!filter_bit[DIFF_STATUS_ADDED]) { + for (i = 0; diff_status_letters[i]; i++) + filter_bit[(int) diff_status_letters[i]] = (1 << i); + } +} + +static unsigned filter_bit_tst(char status, const struct diff_options *opt) +{ + return opt->filter & filter_bit[(int) status]; +} + +unsigned diff_filter_bit(char status) +{ + prepare_filter_bits(); + return filter_bit[(int) status]; } void diff_setup_done(struct diff_options *options) @@ -4143,10 +4739,20 @@ void diff_setup_done(struct diff_options *options) options->set_default(options); if (HAS_MULTI_BITS(options->output_format & check_mask)) - die(_("--name-only, --name-status, --check and -s are mutually exclusive")); + die(_("options '%s', '%s', '%s', and '%s' cannot be used together"), + "--name-only", "--name-status", "--check", "-s"); if (HAS_MULTI_BITS(options->pickaxe_opts & DIFF_PICKAXE_KINDS_MASK)) - die(_("-G, -S and --find-object are mutually exclusive")); + die(_("options '%s', '%s', and '%s' cannot be used together"), + "-G", "-S", "--find-object"); + + if (HAS_MULTI_BITS(options->pickaxe_opts & DIFF_PICKAXE_KINDS_G_REGEX_MASK)) + die(_("options '%s' and '%s' cannot be used together, use '%s' with '%s'"), + "-G", "--pickaxe-regex", "--pickaxe-regex", "-S"); + + if (HAS_MULTI_BITS(options->pickaxe_opts & DIFF_PICKAXE_KINDS_ALL_OBJFIND_MASK)) + die(_("options '%s' and '%s' cannot be used together, use '%s' with '%s' and '%s'"), + "--pickaxe-all", "--find-object", "--pickaxe-all", "-G", "-S"); /* * Most of the time we can say "there are changes" @@ -4155,7 +4761,8 @@ void diff_setup_done(struct diff_options *options) * inside contents. */ - if ((options->xdl_opts & XDF_WHITESPACE_FLAGS)) + if ((options->xdl_opts & XDF_WHITESPACE_FLAGS) || + options->ignore_regex_nr) options->flags.diff_from_contents = 1; else options->flags.diff_from_contents = 0; @@ -4208,16 +4815,6 @@ void diff_setup_done(struct diff_options *options) if (options->detect_rename && options->rename_limit < 0) options->rename_limit = diff_rename_limit_default; - if (options->setup & DIFF_SETUP_USE_CACHE) { - if (!active_cache) - /* read-cache does not die even when it fails - * so it is safe for us to do this here. Also - * it does not smudge active_cache or active_nr - * when it fails, so we do not have to worry about - * cleaning it up ourselves either. - */ - read_cache(); - } if (hexsz < options->abbrev) options->abbrev = hexsz; /* full */ @@ -4238,68 +4835,12 @@ void diff_setup_done(struct diff_options *options) if (!options->use_color || external_diff()) options->color_moved = 0; -} - -static int opt_arg(const char *arg, int arg_short, const char *arg_long, int *val) -{ - char c, *eq; - int len; - - if (*arg != '-') - return 0; - c = *++arg; - if (!c) - return 0; - if (c == arg_short) { - c = *++arg; - if (!c) - return 1; - if (val && isdigit(c)) { - char *end; - int n = strtoul(arg, &end, 10); - if (*end) - return 0; - *val = n; - return 1; - } - return 0; - } - if (c != '-') - return 0; - arg++; - eq = strchrnul(arg, '='); - len = eq - arg; - if (!len || strncmp(arg, arg_long, len)) - return 0; - if (*eq) { - int n; - char *end; - if (!isdigit(*++eq)) - return 0; - n = strtoul(eq, &end, 10); - if (*end) - return 0; - *val = n; - } - return 1; -} - -static int diff_scoreopt_parse(const char *opt); -static inline int short_opt(char opt, const char **argv, - const char **optarg) -{ - const char *arg = argv[0]; - if (arg[0] != '-' || arg[1] != opt) - return 0; - if (arg[2] != '\0') { - *optarg = arg + 2; - return 1; + if (options->filter_not) { + if (!options->filter) + options->filter = ~filter_bit[DIFF_STATUS_FILTER_AON]; + options->filter &= ~options->filter_not; } - if (!argv[1]) - die("Option '%c' requires a value", opt); - *optarg = argv[1]; - return 2; } int parse_long_opt(const char *opt, const char **argv, @@ -4323,77 +4864,56 @@ int parse_long_opt(const char *opt, const char **argv, return 2; } -static int stat_opt(struct diff_options *options, const char **av) +static int diff_opt_stat(const struct option *opt, const char *value, int unset) { - const char *arg = av[0]; - char *end; + struct diff_options *options = opt->value; int width = options->stat_width; int name_width = options->stat_name_width; int graph_width = options->stat_graph_width; int count = options->stat_count; - int argcount = 1; + char *end; - if (!skip_prefix(arg, "--stat", &arg)) - BUG("stat option does not begin with --stat: %s", arg); - end = (char *)arg; + BUG_ON_OPT_NEG(unset); - switch (*arg) { - case '-': - if (skip_prefix(arg, "-width", &arg)) { - if (*arg == '=') - width = strtoul(arg + 1, &end, 10); - else if (!*arg && !av[1]) - die_want_option("--stat-width"); - else if (!*arg) { - width = strtoul(av[1], &end, 10); - argcount = 2; - } - } else if (skip_prefix(arg, "-name-width", &arg)) { - if (*arg == '=') - name_width = strtoul(arg + 1, &end, 10); - else if (!*arg && !av[1]) - die_want_option("--stat-name-width"); - else if (!*arg) { - name_width = strtoul(av[1], &end, 10); - argcount = 2; - } - } else if (skip_prefix(arg, "-graph-width", &arg)) { - if (*arg == '=') - graph_width = strtoul(arg + 1, &end, 10); - else if (!*arg && !av[1]) - die_want_option("--stat-graph-width"); - else if (!*arg) { - graph_width = strtoul(av[1], &end, 10); - argcount = 2; - } - } else if (skip_prefix(arg, "-count", &arg)) { - if (*arg == '=') - count = strtoul(arg + 1, &end, 10); - else if (!*arg && !av[1]) - die_want_option("--stat-count"); - else if (!*arg) { - count = strtoul(av[1], &end, 10); - argcount = 2; - } + if (!strcmp(opt->long_name, "stat")) { + if (value) { + width = strtoul(value, &end, 10); + if (*end == ',') + name_width = strtoul(end+1, &end, 10); + if (*end == ',') + count = strtoul(end+1, &end, 10); + if (*end) + return error(_("invalid --stat value: %s"), value); } - break; - case '=': - width = strtoul(arg+1, &end, 10); - if (*end == ',') - name_width = strtoul(end+1, &end, 10); - if (*end == ',') - count = strtoul(end+1, &end, 10); - } + } else if (!strcmp(opt->long_name, "stat-width")) { + width = strtoul(value, &end, 10); + if (*end) + return error(_("%s expects a numerical value"), + opt->long_name); + } else if (!strcmp(opt->long_name, "stat-name-width")) { + name_width = strtoul(value, &end, 10); + if (*end) + return error(_("%s expects a numerical value"), + opt->long_name); + } else if (!strcmp(opt->long_name, "stat-graph-width")) { + graph_width = strtoul(value, &end, 10); + if (*end) + return error(_("%s expects a numerical value"), + opt->long_name); + } else if (!strcmp(opt->long_name, "stat-count")) { + count = strtoul(value, &end, 10); + if (*end) + return error(_("%s expects a numerical value"), + opt->long_name); + } else + BUG("%s should not get here", opt->long_name); - /* Important! This checks all the error cases! */ - if (*end) - return 0; options->output_format |= DIFF_FORMAT_DIFFSTAT; options->stat_name_width = name_width; options->stat_graph_width = graph_width; options->stat_width = width; options->stat_count = count; - return argcount; + return 0; } static int parse_dirstat_opt(struct diff_options *options, const char *params) @@ -4411,66 +4931,15 @@ static int parse_dirstat_opt(struct diff_options *options, const char *params) return 1; } -static int parse_submodule_opt(struct diff_options *options, const char *value) -{ - if (parse_submodule_params(options, value)) - die(_("Failed to parse --submodule option parameter: '%s'"), - value); - return 1; -} - -static const char diff_status_letters[] = { - DIFF_STATUS_ADDED, - DIFF_STATUS_COPIED, - DIFF_STATUS_DELETED, - DIFF_STATUS_MODIFIED, - DIFF_STATUS_RENAMED, - DIFF_STATUS_TYPE_CHANGED, - DIFF_STATUS_UNKNOWN, - DIFF_STATUS_UNMERGED, - DIFF_STATUS_FILTER_AON, - DIFF_STATUS_FILTER_BROKEN, - '\0', -}; - -static unsigned int filter_bit['Z' + 1]; - -static void prepare_filter_bits(void) -{ - int i; - - if (!filter_bit[DIFF_STATUS_ADDED]) { - for (i = 0; diff_status_letters[i]; i++) - filter_bit[(int) diff_status_letters[i]] = (1 << i); - } -} - -static unsigned filter_bit_tst(char status, const struct diff_options *opt) -{ - return opt->filter & filter_bit[(int) status]; -} - -static int parse_diff_filter_opt(const char *optarg, struct diff_options *opt) +static int diff_opt_diff_filter(const struct option *option, + const char *optarg, int unset) { + struct diff_options *opt = option->value; int i, optch; + BUG_ON_OPT_NEG(unset); prepare_filter_bits(); - /* - * If there is a negation e.g. 'd' in the input, and we haven't - * initialized the filter field with another --diff-filter, start - * from full set of bits, except for AON. - */ - if (!opt->filter) { - for (i = 0; (optch = optarg[i]) != '\0'; i++) { - if (optch < 'a' || 'z' < optch) - continue; - opt->filter = (1 << (ARRAY_SIZE(diff_status_letters) - 1)) - 1; - opt->filter &= ~filter_bit[DIFF_STATUS_FILTER_AON]; - break; - } - } - for (i = 0; (optch = optarg[i]) != '\0'; i++) { unsigned int bit; int negate; @@ -4484,235 +4953,462 @@ static int parse_diff_filter_opt(const char *optarg, struct diff_options *opt) bit = (0 <= optch && optch <= 'Z') ? filter_bit[optch] : 0; if (!bit) - return optarg[i]; + return error(_("unknown change class '%c' in --diff-filter=%s"), + optarg[i], optarg); if (negate) - opt->filter &= ~bit; + opt->filter_not |= bit; else opt->filter |= bit; } return 0; } -static void enable_patch_output(int *fmt) { +static void enable_patch_output(int *fmt) +{ *fmt &= ~DIFF_FORMAT_NO_OUTPUT; *fmt |= DIFF_FORMAT_PATCH; } -static int parse_ws_error_highlight_opt(struct diff_options *opt, const char *arg) +static int diff_opt_ws_error_highlight(const struct option *option, + const char *arg, int unset) { + struct diff_options *opt = option->value; int val = parse_ws_error_highlight(arg); - if (val < 0) { - error("unknown value after ws-error-highlight=%.*s", - -1 - val, arg); - return 0; - } + BUG_ON_OPT_NEG(unset); + if (val < 0) + return error(_("unknown value after ws-error-highlight=%.*s"), + -1 - val, arg); opt->ws_error_highlight = val; - return 1; + return 0; } -static int parse_objfind_opt(struct diff_options *opt, const char *arg) +static int diff_opt_find_object(const struct option *option, + const char *arg, int unset) { + struct diff_options *opt = option->value; struct object_id oid; + BUG_ON_OPT_NEG(unset); if (get_oid(arg, &oid)) - return error("unable to resolve '%s'", arg); + return error(_("unable to resolve '%s'"), arg); if (!opt->objfind) - opt->objfind = xcalloc(1, sizeof(*opt->objfind)); + CALLOC_ARRAY(opt->objfind, 1); opt->pickaxe_opts |= DIFF_PICKAXE_KIND_OBJFIND; opt->flags.recursive = 1; opt->flags.tree_in_recursive = 1; oidset_insert(opt->objfind, &oid); - return 1; + return 0; } -int diff_opt_parse(struct diff_options *options, - const char **av, int ac, const char *prefix) +static int diff_opt_anchored(const struct option *opt, + const char *arg, int unset) { - const char *arg = av[0]; - const char *optarg; - int argcount; + struct diff_options *options = opt->value; - if (!prefix) - prefix = ""; + BUG_ON_OPT_NEG(unset); + options->xdl_opts = DIFF_WITH_ALG(options, PATIENCE_DIFF); + ALLOC_GROW(options->anchors, options->anchors_nr + 1, + options->anchors_alloc); + options->anchors[options->anchors_nr++] = xstrdup(arg); + return 0; +} - /* Output format options */ - if (!strcmp(arg, "-p") || !strcmp(arg, "-u") || !strcmp(arg, "--patch") - || opt_arg(arg, 'U', "unified", &options->context)) - enable_patch_output(&options->output_format); - else if (!strcmp(arg, "--raw")) - options->output_format |= DIFF_FORMAT_RAW; - else if (!strcmp(arg, "--patch-with-raw")) { - enable_patch_output(&options->output_format); - options->output_format |= DIFF_FORMAT_RAW; - } else if (!strcmp(arg, "--numstat")) - options->output_format |= DIFF_FORMAT_NUMSTAT; - else if (!strcmp(arg, "--shortstat")) - options->output_format |= DIFF_FORMAT_SHORTSTAT; - else if (skip_prefix(arg, "-X", &arg) || - skip_to_optional_arg(arg, "--dirstat", &arg)) - return parse_dirstat_opt(options, arg); - else if (!strcmp(arg, "--cumulative")) - return parse_dirstat_opt(options, "cumulative"); - else if (skip_to_optional_arg(arg, "--dirstat-by-file", &arg)) { - parse_dirstat_opt(options, "files"); - return parse_dirstat_opt(options, arg); - } - else if (!strcmp(arg, "--check")) - options->output_format |= DIFF_FORMAT_CHECKDIFF; - else if (!strcmp(arg, "--summary")) - options->output_format |= DIFF_FORMAT_SUMMARY; - else if (!strcmp(arg, "--patch-with-stat")) { - enable_patch_output(&options->output_format); - options->output_format |= DIFF_FORMAT_DIFFSTAT; - } else if (!strcmp(arg, "--name-only")) - options->output_format |= DIFF_FORMAT_NAME; - else if (!strcmp(arg, "--name-status")) - options->output_format |= DIFF_FORMAT_NAME_STATUS; - else if (!strcmp(arg, "-s") || !strcmp(arg, "--no-patch")) - options->output_format |= DIFF_FORMAT_NO_OUTPUT; - else if (starts_with(arg, "--stat")) - /* --stat, --stat-width, --stat-name-width, or --stat-count */ - return stat_opt(options, av); - else if (!strcmp(arg, "--compact-summary")) { - options->flags.stat_with_summary = 1; - options->output_format |= DIFF_FORMAT_DIFFSTAT; - } else if (!strcmp(arg, "--no-compact-summary")) - options->flags.stat_with_summary = 0; - - /* renames options */ - else if (starts_with(arg, "-B") || - skip_to_optional_arg(arg, "--break-rewrites", NULL)) { - if ((options->break_opt = diff_scoreopt_parse(arg)) == -1) - return error("invalid argument to -B: %s", arg+2); - } - else if (starts_with(arg, "-M") || - skip_to_optional_arg(arg, "--find-renames", NULL)) { - if ((options->rename_score = diff_scoreopt_parse(arg)) == -1) - return error("invalid argument to -M: %s", arg+2); - options->detect_rename = DIFF_DETECT_RENAME; - } - else if (!strcmp(arg, "-D") || !strcmp(arg, "--irreversible-delete")) { - options->irreversible_delete = 1; - } - else if (starts_with(arg, "-C") || - skip_to_optional_arg(arg, "--find-copies", NULL)) { - if (options->detect_rename == DIFF_DETECT_COPY) - options->flags.find_copies_harder = 1; - if ((options->rename_score = diff_scoreopt_parse(arg)) == -1) - return error("invalid argument to -C: %s", arg+2); - options->detect_rename = DIFF_DETECT_COPY; +static int diff_opt_binary(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + + BUG_ON_OPT_NEG(unset); + BUG_ON_OPT_ARG(arg); + enable_patch_output(&options->output_format); + options->flags.binary = 1; + return 0; +} + +static int diff_opt_break_rewrites(const struct option *opt, + const char *arg, int unset) +{ + int *break_opt = opt->value; + int opt1, opt2; + + BUG_ON_OPT_NEG(unset); + if (!arg) + arg = ""; + opt1 = parse_rename_score(&arg); + if (*arg == 0) + opt2 = 0; + else if (*arg != '/') + return error(_("%s expects <n>/<m> form"), opt->long_name); + else { + arg++; + opt2 = parse_rename_score(&arg); } - else if (!strcmp(arg, "--no-renames")) - options->detect_rename = 0; - else if (!strcmp(arg, "--rename-empty")) - options->flags.rename_empty = 1; - else if (!strcmp(arg, "--no-rename-empty")) - options->flags.rename_empty = 0; - else if (skip_to_optional_arg_default(arg, "--relative", &arg, NULL)) { - options->flags.relative_name = 1; - if (arg) - options->prefix = arg; - } - - /* xdiff options */ - else if (!strcmp(arg, "--minimal")) - DIFF_XDL_SET(options, NEED_MINIMAL); - else if (!strcmp(arg, "--no-minimal")) - DIFF_XDL_CLR(options, NEED_MINIMAL); - else if (!strcmp(arg, "-w") || !strcmp(arg, "--ignore-all-space")) - DIFF_XDL_SET(options, IGNORE_WHITESPACE); - else if (!strcmp(arg, "-b") || !strcmp(arg, "--ignore-space-change")) - DIFF_XDL_SET(options, IGNORE_WHITESPACE_CHANGE); - else if (!strcmp(arg, "--ignore-space-at-eol")) - DIFF_XDL_SET(options, IGNORE_WHITESPACE_AT_EOL); - else if (!strcmp(arg, "--ignore-cr-at-eol")) - DIFF_XDL_SET(options, IGNORE_CR_AT_EOL); - else if (!strcmp(arg, "--ignore-blank-lines")) - DIFF_XDL_SET(options, IGNORE_BLANK_LINES); - else if (!strcmp(arg, "--indent-heuristic")) - DIFF_XDL_SET(options, INDENT_HEURISTIC); - else if (!strcmp(arg, "--no-indent-heuristic")) - DIFF_XDL_CLR(options, INDENT_HEURISTIC); - else if (!strcmp(arg, "--patience")) { - int i; - options->xdl_opts = DIFF_WITH_ALG(options, PATIENCE_DIFF); - /* - * Both --patience and --anchored use PATIENCE_DIFF - * internally, so remove any anchors previously - * specified. - */ - for (i = 0; i < options->anchors_nr; i++) - free(options->anchors[i]); - options->anchors_nr = 0; - } else if (!strcmp(arg, "--histogram")) - options->xdl_opts = DIFF_WITH_ALG(options, HISTOGRAM_DIFF); - else if ((argcount = parse_long_opt("diff-algorithm", av, &optarg))) { - long value = parse_algorithm_value(optarg); - if (value < 0) - return error("option diff-algorithm accepts \"myers\", " - "\"minimal\", \"patience\" and \"histogram\""); - /* clear out previous settings */ - DIFF_XDL_CLR(options, NEED_MINIMAL); - options->xdl_opts &= ~XDF_DIFF_ALGORITHM_MASK; - options->xdl_opts |= value; - return argcount; - } else if (skip_prefix(arg, "--anchored=", &arg)) { - options->xdl_opts = DIFF_WITH_ALG(options, PATIENCE_DIFF); - ALLOC_GROW(options->anchors, options->anchors_nr + 1, - options->anchors_alloc); - options->anchors[options->anchors_nr++] = xstrdup(arg); - } - - /* flags options */ - else if (!strcmp(arg, "--binary")) { - enable_patch_output(&options->output_format); - options->flags.binary = 1; - } - else if (!strcmp(arg, "--full-index")) - options->flags.full_index = 1; - else if (!strcmp(arg, "-a") || !strcmp(arg, "--text")) - options->flags.text = 1; - else if (!strcmp(arg, "-R")) - options->flags.reverse_diff = 1; - else if (!strcmp(arg, "--find-copies-harder")) - options->flags.find_copies_harder = 1; - else if (!strcmp(arg, "--follow")) - options->flags.follow_renames = 1; - else if (!strcmp(arg, "--no-follow")) { - options->flags.follow_renames = 0; - options->flags.default_follow_renames = 0; - } else if (skip_to_optional_arg_default(arg, "--color", &arg, "always")) { - int value = git_config_colorbool(NULL, arg); - if (value < 0) - return error("option `color' expects \"always\", \"auto\", or \"never\""); - options->use_color = value; - } - else if (!strcmp(arg, "--no-color")) - options->use_color = 0; - else if (!strcmp(arg, "--color-moved")) { + if (*arg != 0) + return error(_("%s expects <n>/<m> form"), opt->long_name); + *break_opt = opt1 | (opt2 << 16); + return 0; +} + +static int diff_opt_char(const struct option *opt, + const char *arg, int unset) +{ + char *value = opt->value; + + BUG_ON_OPT_NEG(unset); + if (arg[1]) + return error(_("%s expects a character, got '%s'"), + opt->long_name, arg); + *value = arg[0]; + return 0; +} + +static int diff_opt_color_moved(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + + if (unset) { + options->color_moved = COLOR_MOVED_NO; + } else if (!arg) { if (diff_color_moved_default) options->color_moved = diff_color_moved_default; if (options->color_moved == COLOR_MOVED_NO) options->color_moved = COLOR_MOVED_DEFAULT; - } else if (!strcmp(arg, "--no-color-moved")) - options->color_moved = COLOR_MOVED_NO; - else if (skip_prefix(arg, "--color-moved=", &arg)) { + } else { int cm = parse_color_moved(arg); if (cm < 0) - die("bad --color-moved argument: %s", arg); + return error(_("bad --color-moved argument: %s"), arg); options->color_moved = cm; - } else if (skip_to_optional_arg_default(arg, "--color-words", &options->word_regex, NULL)) { - options->use_color = 1; - options->word_diff = DIFF_WORDS_COLOR; } - else if (!strcmp(arg, "--word-diff")) { - if (options->word_diff == DIFF_WORDS_NONE) - options->word_diff = DIFF_WORDS_PLAIN; + return 0; +} + +static int diff_opt_color_moved_ws(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + unsigned cm; + + if (unset) { + options->color_moved_ws_handling = 0; + return 0; + } + + cm = parse_color_moved_ws(arg); + if (cm & COLOR_MOVED_WS_ERROR) + return error(_("invalid mode '%s' in --color-moved-ws"), arg); + options->color_moved_ws_handling = cm; + return 0; +} + +static int diff_opt_color_words(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + + BUG_ON_OPT_NEG(unset); + options->use_color = 1; + options->word_diff = DIFF_WORDS_COLOR; + options->word_regex = arg; + return 0; +} + +static int diff_opt_compact_summary(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + + BUG_ON_OPT_ARG(arg); + if (unset) { + options->flags.stat_with_summary = 0; + } else { + options->flags.stat_with_summary = 1; + options->output_format |= DIFF_FORMAT_DIFFSTAT; } - else if (skip_prefix(arg, "--word-diff=", &arg)) { + return 0; +} + +static int diff_opt_diff_algorithm(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + + BUG_ON_OPT_NEG(unset); + + if (set_diff_algorithm(options, arg)) + return error(_("option diff-algorithm accepts \"myers\", " + "\"minimal\", \"patience\" and \"histogram\"")); + + options->ignore_driver_algorithm = 1; + + return 0; +} + +static int diff_opt_diff_algorithm_no_arg(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + + BUG_ON_OPT_NEG(unset); + BUG_ON_OPT_ARG(arg); + + if (set_diff_algorithm(options, opt->long_name)) + BUG("available diff algorithms include \"myers\", " + "\"minimal\", \"patience\" and \"histogram\""); + + options->ignore_driver_algorithm = 1; + + return 0; +} + +static int diff_opt_dirstat(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + + BUG_ON_OPT_NEG(unset); + if (!strcmp(opt->long_name, "cumulative")) { + if (arg) + BUG("how come --cumulative take a value?"); + arg = "cumulative"; + } else if (!strcmp(opt->long_name, "dirstat-by-file")) + parse_dirstat_opt(options, "files"); + parse_dirstat_opt(options, arg ? arg : ""); + return 0; +} + +static int diff_opt_find_copies(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + + BUG_ON_OPT_NEG(unset); + if (!arg) + arg = ""; + options->rename_score = parse_rename_score(&arg); + if (*arg != 0) + return error(_("invalid argument to %s"), opt->long_name); + + if (options->detect_rename == DIFF_DETECT_COPY) + options->flags.find_copies_harder = 1; + else + options->detect_rename = DIFF_DETECT_COPY; + + return 0; +} + +static int diff_opt_find_renames(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + + BUG_ON_OPT_NEG(unset); + if (!arg) + arg = ""; + options->rename_score = parse_rename_score(&arg); + if (*arg != 0) + return error(_("invalid argument to %s"), opt->long_name); + + options->detect_rename = DIFF_DETECT_RENAME; + return 0; +} + +static int diff_opt_follow(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + + BUG_ON_OPT_ARG(arg); + if (unset) { + options->flags.follow_renames = 0; + options->flags.default_follow_renames = 0; + } else { + options->flags.follow_renames = 1; + } + return 0; +} + +static int diff_opt_ignore_submodules(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + + BUG_ON_OPT_NEG(unset); + if (!arg) + arg = "all"; + options->flags.override_submodule_config = 1; + handle_ignore_submodules_arg(options, arg); + return 0; +} + +static int diff_opt_line_prefix(const struct option *opt, + const char *optarg, int unset) +{ + struct diff_options *options = opt->value; + + BUG_ON_OPT_NEG(unset); + options->line_prefix = optarg; + options->line_prefix_length = strlen(options->line_prefix); + graph_setup_line_prefix(options); + return 0; +} + +static int diff_opt_no_prefix(const struct option *opt, + const char *optarg, int unset) +{ + struct diff_options *options = opt->value; + + BUG_ON_OPT_NEG(unset); + BUG_ON_OPT_ARG(optarg); + options->a_prefix = ""; + options->b_prefix = ""; + return 0; +} + +static enum parse_opt_result diff_opt_output(struct parse_opt_ctx_t *ctx, + const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + char *path; + + BUG_ON_OPT_NEG(unset); + path = prefix_filename(ctx->prefix, arg); + options->file = xfopen(path, "w"); + options->close_file = 1; + if (options->use_color != GIT_COLOR_ALWAYS) + options->use_color = GIT_COLOR_NEVER; + free(path); + return 0; +} + +static int diff_opt_patience(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + int i; + + BUG_ON_OPT_NEG(unset); + BUG_ON_OPT_ARG(arg); + /* + * Both --patience and --anchored use PATIENCE_DIFF + * internally, so remove any anchors previously + * specified. + */ + for (i = 0; i < options->anchors_nr; i++) + free(options->anchors[i]); + options->anchors_nr = 0; + options->ignore_driver_algorithm = 1; + + return set_diff_algorithm(options, "patience"); +} + +static int diff_opt_ignore_regex(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + regex_t *regex; + + BUG_ON_OPT_NEG(unset); + regex = xmalloc(sizeof(*regex)); + if (regcomp(regex, arg, REG_EXTENDED | REG_NEWLINE)) + return error(_("invalid regex given to -I: '%s'"), arg); + ALLOC_GROW(options->ignore_regex, options->ignore_regex_nr + 1, + options->ignore_regex_alloc); + options->ignore_regex[options->ignore_regex_nr++] = regex; + return 0; +} + +static int diff_opt_pickaxe_regex(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + + BUG_ON_OPT_NEG(unset); + options->pickaxe = arg; + options->pickaxe_opts |= DIFF_PICKAXE_KIND_G; + return 0; +} + +static int diff_opt_pickaxe_string(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + + BUG_ON_OPT_NEG(unset); + options->pickaxe = arg; + options->pickaxe_opts |= DIFF_PICKAXE_KIND_S; + return 0; +} + +static int diff_opt_relative(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + + options->flags.relative_name = !unset; + if (arg) + options->prefix = arg; + return 0; +} + +static int diff_opt_submodule(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + + BUG_ON_OPT_NEG(unset); + if (!arg) + arg = "log"; + if (parse_submodule_params(options, arg)) + return error(_("failed to parse --submodule option parameter: '%s'"), + arg); + return 0; +} + +static int diff_opt_textconv(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + + BUG_ON_OPT_ARG(arg); + if (unset) { + options->flags.allow_textconv = 0; + } else { + options->flags.allow_textconv = 1; + options->flags.textconv_set_via_cmdline = 1; + } + return 0; +} + +static int diff_opt_unified(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + char *s; + + BUG_ON_OPT_NEG(unset); + + if (arg) { + options->context = strtol(arg, &s, 10); + if (*s) + return error(_("%s expects a numerical value"), "--unified"); + } + enable_patch_output(&options->output_format); + + return 0; +} + +static int diff_opt_word_diff(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + + BUG_ON_OPT_NEG(unset); + if (arg) { if (!strcmp(arg, "plain")) options->word_diff = DIFF_WORDS_PLAIN; else if (!strcmp(arg, "color")) { @@ -4724,118 +5420,333 @@ int diff_opt_parse(struct diff_options *options, else if (!strcmp(arg, "none")) options->word_diff = DIFF_WORDS_NONE; else - die("bad --word-diff argument: %s", arg); - } - else if ((argcount = parse_long_opt("word-diff-regex", av, &optarg))) { + return error(_("bad --word-diff argument: %s"), arg); + } else { if (options->word_diff == DIFF_WORDS_NONE) options->word_diff = DIFF_WORDS_PLAIN; - options->word_regex = optarg; - return argcount; } - else if (!strcmp(arg, "--exit-code")) - options->flags.exit_with_status = 1; - else if (!strcmp(arg, "--quiet")) - options->flags.quick = 1; - else if (!strcmp(arg, "--ext-diff")) - options->flags.allow_external = 1; - else if (!strcmp(arg, "--no-ext-diff")) - options->flags.allow_external = 0; - else if (!strcmp(arg, "--textconv")) { - options->flags.allow_textconv = 1; - options->flags.textconv_set_via_cmdline = 1; - } else if (!strcmp(arg, "--no-textconv")) - options->flags.allow_textconv = 0; - else if (skip_to_optional_arg_default(arg, "--ignore-submodules", &arg, "all")) { - options->flags.override_submodule_config = 1; - handle_ignore_submodules_arg(options, arg); - } else if (skip_to_optional_arg_default(arg, "--submodule", &arg, "log")) - return parse_submodule_opt(options, arg); - else if (skip_prefix(arg, "--ws-error-highlight=", &arg)) - return parse_ws_error_highlight_opt(options, arg); - else if (!strcmp(arg, "--ita-invisible-in-index")) - options->ita_invisible_in_index = 1; - else if (!strcmp(arg, "--ita-visible-in-index")) - options->ita_invisible_in_index = 0; - - /* misc options */ - else if (!strcmp(arg, "-z")) - options->line_termination = 0; - else if ((argcount = short_opt('l', av, &optarg))) { - options->rename_limit = strtoul(optarg, NULL, 10); - return argcount; - } - else if ((argcount = short_opt('S', av, &optarg))) { - options->pickaxe = optarg; - options->pickaxe_opts |= DIFF_PICKAXE_KIND_S; - return argcount; - } else if ((argcount = short_opt('G', av, &optarg))) { - options->pickaxe = optarg; - options->pickaxe_opts |= DIFF_PICKAXE_KIND_G; - return argcount; - } - else if (!strcmp(arg, "--pickaxe-all")) - options->pickaxe_opts |= DIFF_PICKAXE_ALL; - else if (!strcmp(arg, "--pickaxe-regex")) - options->pickaxe_opts |= DIFF_PICKAXE_REGEX; - else if ((argcount = short_opt('O', av, &optarg))) { - options->orderfile = prefix_filename(prefix, optarg); - return argcount; - } else if (skip_prefix(arg, "--find-object=", &arg)) - return parse_objfind_opt(options, arg); - else if ((argcount = parse_long_opt("diff-filter", av, &optarg))) { - int offending = parse_diff_filter_opt(optarg, options); - if (offending) - die("unknown change class '%c' in --diff-filter=%s", - offending, optarg); - return argcount; - } - else if (!strcmp(arg, "--no-abbrev")) - options->abbrev = 0; - else if (!strcmp(arg, "--abbrev")) - options->abbrev = DEFAULT_ABBREV; - else if (skip_prefix(arg, "--abbrev=", &arg)) { - options->abbrev = strtoul(arg, NULL, 10); - if (options->abbrev < MINIMUM_ABBREV) - options->abbrev = MINIMUM_ABBREV; - else if (the_hash_algo->hexsz < options->abbrev) - options->abbrev = the_hash_algo->hexsz; - } - else if ((argcount = parse_long_opt("src-prefix", av, &optarg))) { - options->a_prefix = optarg; - return argcount; - } - else if ((argcount = parse_long_opt("line-prefix", av, &optarg))) { - options->line_prefix = optarg; - options->line_prefix_length = strlen(options->line_prefix); - graph_setup_line_prefix(options); - return argcount; - } - else if ((argcount = parse_long_opt("dst-prefix", av, &optarg))) { - options->b_prefix = optarg; - return argcount; - } - else if (!strcmp(arg, "--no-prefix")) - options->a_prefix = options->b_prefix = ""; - else if (opt_arg(arg, '\0', "inter-hunk-context", - &options->interhunkcontext)) - ; - else if (!strcmp(arg, "-W")) - options->flags.funccontext = 1; - else if (!strcmp(arg, "--function-context")) - options->flags.funccontext = 1; - else if (!strcmp(arg, "--no-function-context")) - options->flags.funccontext = 0; - else if ((argcount = parse_long_opt("output", av, &optarg))) { - char *path = prefix_filename(prefix, optarg); - options->file = xfopen(path, "w"); - options->close_file = 1; - if (options->use_color != GIT_COLOR_ALWAYS) - options->use_color = GIT_COLOR_NEVER; - free(path); - return argcount; - } else - return 0; - return 1; + return 0; +} + +static int diff_opt_word_diff_regex(const struct option *opt, + const char *arg, int unset) +{ + struct diff_options *options = opt->value; + + BUG_ON_OPT_NEG(unset); + if (options->word_diff == DIFF_WORDS_NONE) + options->word_diff = DIFF_WORDS_PLAIN; + options->word_regex = arg; + return 0; +} + +static int diff_opt_rotate_to(const struct option *opt, const char *arg, int unset) +{ + struct diff_options *options = opt->value; + + BUG_ON_OPT_NEG(unset); + if (!strcmp(opt->long_name, "skip-to")) + options->skip_instead_of_rotate = 1; + else + options->skip_instead_of_rotate = 0; + options->rotate_to = arg; + return 0; +} + +struct option *add_diff_options(const struct option *opts, + struct diff_options *options) +{ + struct option parseopts[] = { + OPT_GROUP(N_("Diff output format options")), + OPT_BITOP('p', "patch", &options->output_format, + N_("generate patch"), + DIFF_FORMAT_PATCH, DIFF_FORMAT_NO_OUTPUT), + OPT_BIT_F('s', "no-patch", &options->output_format, + N_("suppress diff output"), + DIFF_FORMAT_NO_OUTPUT, PARSE_OPT_NONEG), + OPT_BITOP('u', NULL, &options->output_format, + N_("generate patch"), + DIFF_FORMAT_PATCH, DIFF_FORMAT_NO_OUTPUT), + OPT_CALLBACK_F('U', "unified", options, N_("<n>"), + N_("generate diffs with <n> lines context"), + PARSE_OPT_NONEG | PARSE_OPT_OPTARG, diff_opt_unified), + OPT_BOOL('W', "function-context", &options->flags.funccontext, + N_("generate diffs with <n> lines context")), + OPT_BIT_F(0, "raw", &options->output_format, + N_("generate the diff in raw format"), + DIFF_FORMAT_RAW, PARSE_OPT_NONEG), + OPT_BITOP(0, "patch-with-raw", &options->output_format, + N_("synonym for '-p --raw'"), + DIFF_FORMAT_PATCH | DIFF_FORMAT_RAW, + DIFF_FORMAT_NO_OUTPUT), + OPT_BITOP(0, "patch-with-stat", &options->output_format, + N_("synonym for '-p --stat'"), + DIFF_FORMAT_PATCH | DIFF_FORMAT_DIFFSTAT, + DIFF_FORMAT_NO_OUTPUT), + OPT_BIT_F(0, "numstat", &options->output_format, + N_("machine friendly --stat"), + DIFF_FORMAT_NUMSTAT, PARSE_OPT_NONEG), + OPT_BIT_F(0, "shortstat", &options->output_format, + N_("output only the last line of --stat"), + DIFF_FORMAT_SHORTSTAT, PARSE_OPT_NONEG), + OPT_CALLBACK_F('X', "dirstat", options, N_("<param1,param2>..."), + N_("output the distribution of relative amount of changes for each sub-directory"), + PARSE_OPT_NONEG | PARSE_OPT_OPTARG, + diff_opt_dirstat), + OPT_CALLBACK_F(0, "cumulative", options, NULL, + N_("synonym for --dirstat=cumulative"), + PARSE_OPT_NONEG | PARSE_OPT_NOARG, + diff_opt_dirstat), + OPT_CALLBACK_F(0, "dirstat-by-file", options, N_("<param1,param2>..."), + N_("synonym for --dirstat=files,param1,param2..."), + PARSE_OPT_NONEG | PARSE_OPT_OPTARG, + diff_opt_dirstat), + OPT_BIT_F(0, "check", &options->output_format, + N_("warn if changes introduce conflict markers or whitespace errors"), + DIFF_FORMAT_CHECKDIFF, PARSE_OPT_NONEG), + OPT_BIT_F(0, "summary", &options->output_format, + N_("condensed summary such as creations, renames and mode changes"), + DIFF_FORMAT_SUMMARY, PARSE_OPT_NONEG), + OPT_BIT_F(0, "name-only", &options->output_format, + N_("show only names of changed files"), + DIFF_FORMAT_NAME, PARSE_OPT_NONEG), + OPT_BIT_F(0, "name-status", &options->output_format, + N_("show only names and status of changed files"), + DIFF_FORMAT_NAME_STATUS, PARSE_OPT_NONEG), + OPT_CALLBACK_F(0, "stat", options, N_("<width>[,<name-width>[,<count>]]"), + N_("generate diffstat"), + PARSE_OPT_NONEG | PARSE_OPT_OPTARG, diff_opt_stat), + OPT_CALLBACK_F(0, "stat-width", options, N_("<width>"), + N_("generate diffstat with a given width"), + PARSE_OPT_NONEG, diff_opt_stat), + OPT_CALLBACK_F(0, "stat-name-width", options, N_("<width>"), + N_("generate diffstat with a given name width"), + PARSE_OPT_NONEG, diff_opt_stat), + OPT_CALLBACK_F(0, "stat-graph-width", options, N_("<width>"), + N_("generate diffstat with a given graph width"), + PARSE_OPT_NONEG, diff_opt_stat), + OPT_CALLBACK_F(0, "stat-count", options, N_("<count>"), + N_("generate diffstat with limited lines"), + PARSE_OPT_NONEG, diff_opt_stat), + OPT_CALLBACK_F(0, "compact-summary", options, NULL, + N_("generate compact summary in diffstat"), + PARSE_OPT_NOARG, diff_opt_compact_summary), + OPT_CALLBACK_F(0, "binary", options, NULL, + N_("output a binary diff that can be applied"), + PARSE_OPT_NONEG | PARSE_OPT_NOARG, diff_opt_binary), + OPT_BOOL(0, "full-index", &options->flags.full_index, + N_("show full pre- and post-image object names on the \"index\" lines")), + OPT_COLOR_FLAG(0, "color", &options->use_color, + N_("show colored diff")), + OPT_CALLBACK_F(0, "ws-error-highlight", options, N_("<kind>"), + N_("highlight whitespace errors in the 'context', 'old' or 'new' lines in the diff"), + PARSE_OPT_NONEG, diff_opt_ws_error_highlight), + OPT_SET_INT('z', NULL, &options->line_termination, + N_("do not munge pathnames and use NULs as output field terminators in --raw or --numstat"), + 0), + OPT__ABBREV(&options->abbrev), + OPT_STRING_F(0, "src-prefix", &options->a_prefix, N_("<prefix>"), + N_("show the given source prefix instead of \"a/\""), + PARSE_OPT_NONEG), + OPT_STRING_F(0, "dst-prefix", &options->b_prefix, N_("<prefix>"), + N_("show the given destination prefix instead of \"b/\""), + PARSE_OPT_NONEG), + OPT_CALLBACK_F(0, "line-prefix", options, N_("<prefix>"), + N_("prepend an additional prefix to every line of output"), + PARSE_OPT_NONEG, diff_opt_line_prefix), + OPT_CALLBACK_F(0, "no-prefix", options, NULL, + N_("do not show any source or destination prefix"), + PARSE_OPT_NONEG | PARSE_OPT_NOARG, diff_opt_no_prefix), + OPT_INTEGER_F(0, "inter-hunk-context", &options->interhunkcontext, + N_("show context between diff hunks up to the specified number of lines"), + PARSE_OPT_NONEG), + OPT_CALLBACK_F(0, "output-indicator-new", + &options->output_indicators[OUTPUT_INDICATOR_NEW], + N_("<char>"), + N_("specify the character to indicate a new line instead of '+'"), + PARSE_OPT_NONEG, diff_opt_char), + OPT_CALLBACK_F(0, "output-indicator-old", + &options->output_indicators[OUTPUT_INDICATOR_OLD], + N_("<char>"), + N_("specify the character to indicate an old line instead of '-'"), + PARSE_OPT_NONEG, diff_opt_char), + OPT_CALLBACK_F(0, "output-indicator-context", + &options->output_indicators[OUTPUT_INDICATOR_CONTEXT], + N_("<char>"), + N_("specify the character to indicate a context instead of ' '"), + PARSE_OPT_NONEG, diff_opt_char), + + OPT_GROUP(N_("Diff rename options")), + OPT_CALLBACK_F('B', "break-rewrites", &options->break_opt, N_("<n>[/<m>]"), + N_("break complete rewrite changes into pairs of delete and create"), + PARSE_OPT_NONEG | PARSE_OPT_OPTARG, + diff_opt_break_rewrites), + OPT_CALLBACK_F('M', "find-renames", options, N_("<n>"), + N_("detect renames"), + PARSE_OPT_NONEG | PARSE_OPT_OPTARG, + diff_opt_find_renames), + OPT_SET_INT_F('D', "irreversible-delete", &options->irreversible_delete, + N_("omit the preimage for deletes"), + 1, PARSE_OPT_NONEG), + OPT_CALLBACK_F('C', "find-copies", options, N_("<n>"), + N_("detect copies"), + PARSE_OPT_NONEG | PARSE_OPT_OPTARG, + diff_opt_find_copies), + OPT_BOOL(0, "find-copies-harder", &options->flags.find_copies_harder, + N_("use unmodified files as source to find copies")), + OPT_SET_INT_F(0, "no-renames", &options->detect_rename, + N_("disable rename detection"), + 0, PARSE_OPT_NONEG), + OPT_BOOL(0, "rename-empty", &options->flags.rename_empty, + N_("use empty blobs as rename source")), + OPT_CALLBACK_F(0, "follow", options, NULL, + N_("continue listing the history of a file beyond renames"), + PARSE_OPT_NOARG, diff_opt_follow), + OPT_INTEGER('l', NULL, &options->rename_limit, + N_("prevent rename/copy detection if the number of rename/copy targets exceeds given limit")), + + OPT_GROUP(N_("Diff algorithm options")), + OPT_CALLBACK_F(0, "minimal", options, NULL, + N_("produce the smallest possible diff"), + PARSE_OPT_NONEG | PARSE_OPT_NOARG, + diff_opt_diff_algorithm_no_arg), + OPT_BIT_F('w', "ignore-all-space", &options->xdl_opts, + N_("ignore whitespace when comparing lines"), + XDF_IGNORE_WHITESPACE, PARSE_OPT_NONEG), + OPT_BIT_F('b', "ignore-space-change", &options->xdl_opts, + N_("ignore changes in amount of whitespace"), + XDF_IGNORE_WHITESPACE_CHANGE, PARSE_OPT_NONEG), + OPT_BIT_F(0, "ignore-space-at-eol", &options->xdl_opts, + N_("ignore changes in whitespace at EOL"), + XDF_IGNORE_WHITESPACE_AT_EOL, PARSE_OPT_NONEG), + OPT_BIT_F(0, "ignore-cr-at-eol", &options->xdl_opts, + N_("ignore carrier-return at the end of line"), + XDF_IGNORE_CR_AT_EOL, PARSE_OPT_NONEG), + OPT_BIT_F(0, "ignore-blank-lines", &options->xdl_opts, + N_("ignore changes whose lines are all blank"), + XDF_IGNORE_BLANK_LINES, PARSE_OPT_NONEG), + OPT_CALLBACK_F('I', "ignore-matching-lines", options, N_("<regex>"), + N_("ignore changes whose all lines match <regex>"), + 0, diff_opt_ignore_regex), + OPT_BIT(0, "indent-heuristic", &options->xdl_opts, + N_("heuristic to shift diff hunk boundaries for easy reading"), + XDF_INDENT_HEURISTIC), + OPT_CALLBACK_F(0, "patience", options, NULL, + N_("generate diff using the \"patience diff\" algorithm"), + PARSE_OPT_NONEG | PARSE_OPT_NOARG, + diff_opt_patience), + OPT_CALLBACK_F(0, "histogram", options, NULL, + N_("generate diff using the \"histogram diff\" algorithm"), + PARSE_OPT_NONEG | PARSE_OPT_NOARG, + diff_opt_diff_algorithm_no_arg), + OPT_CALLBACK_F(0, "diff-algorithm", options, N_("<algorithm>"), + N_("choose a diff algorithm"), + PARSE_OPT_NONEG, diff_opt_diff_algorithm), + OPT_CALLBACK_F(0, "anchored", options, N_("<text>"), + N_("generate diff using the \"anchored diff\" algorithm"), + PARSE_OPT_NONEG, diff_opt_anchored), + OPT_CALLBACK_F(0, "word-diff", options, N_("<mode>"), + N_("show word diff, using <mode> to delimit changed words"), + PARSE_OPT_NONEG | PARSE_OPT_OPTARG, diff_opt_word_diff), + OPT_CALLBACK_F(0, "word-diff-regex", options, N_("<regex>"), + N_("use <regex> to decide what a word is"), + PARSE_OPT_NONEG, diff_opt_word_diff_regex), + OPT_CALLBACK_F(0, "color-words", options, N_("<regex>"), + N_("equivalent to --word-diff=color --word-diff-regex=<regex>"), + PARSE_OPT_NONEG | PARSE_OPT_OPTARG, diff_opt_color_words), + OPT_CALLBACK_F(0, "color-moved", options, N_("<mode>"), + N_("moved lines of code are colored differently"), + PARSE_OPT_OPTARG, diff_opt_color_moved), + OPT_CALLBACK_F(0, "color-moved-ws", options, N_("<mode>"), + N_("how white spaces are ignored in --color-moved"), + 0, diff_opt_color_moved_ws), + + OPT_GROUP(N_("Other diff options")), + OPT_CALLBACK_F(0, "relative", options, N_("<prefix>"), + N_("when run from subdir, exclude changes outside and show relative paths"), + PARSE_OPT_OPTARG, + diff_opt_relative), + OPT_BOOL('a', "text", &options->flags.text, + N_("treat all files as text")), + OPT_BOOL('R', NULL, &options->flags.reverse_diff, + N_("swap two inputs, reverse the diff")), + OPT_BOOL(0, "exit-code", &options->flags.exit_with_status, + N_("exit with 1 if there were differences, 0 otherwise")), + OPT_BOOL(0, "quiet", &options->flags.quick, + N_("disable all output of the program")), + OPT_BOOL(0, "ext-diff", &options->flags.allow_external, + N_("allow an external diff helper to be executed")), + OPT_CALLBACK_F(0, "textconv", options, NULL, + N_("run external text conversion filters when comparing binary files"), + PARSE_OPT_NOARG, diff_opt_textconv), + OPT_CALLBACK_F(0, "ignore-submodules", options, N_("<when>"), + N_("ignore changes to submodules in the diff generation"), + PARSE_OPT_NONEG | PARSE_OPT_OPTARG, + diff_opt_ignore_submodules), + OPT_CALLBACK_F(0, "submodule", options, N_("<format>"), + N_("specify how differences in submodules are shown"), + PARSE_OPT_NONEG | PARSE_OPT_OPTARG, + diff_opt_submodule), + OPT_SET_INT_F(0, "ita-invisible-in-index", &options->ita_invisible_in_index, + N_("hide 'git add -N' entries from the index"), + 1, PARSE_OPT_NONEG), + OPT_SET_INT_F(0, "ita-visible-in-index", &options->ita_invisible_in_index, + N_("treat 'git add -N' entries as real in the index"), + 0, PARSE_OPT_NONEG), + OPT_CALLBACK_F('S', NULL, options, N_("<string>"), + N_("look for differences that change the number of occurrences of the specified string"), + 0, diff_opt_pickaxe_string), + OPT_CALLBACK_F('G', NULL, options, N_("<regex>"), + N_("look for differences that change the number of occurrences of the specified regex"), + 0, diff_opt_pickaxe_regex), + OPT_BIT_F(0, "pickaxe-all", &options->pickaxe_opts, + N_("show all changes in the changeset with -S or -G"), + DIFF_PICKAXE_ALL, PARSE_OPT_NONEG), + OPT_BIT_F(0, "pickaxe-regex", &options->pickaxe_opts, + N_("treat <string> in -S as extended POSIX regular expression"), + DIFF_PICKAXE_REGEX, PARSE_OPT_NONEG), + OPT_FILENAME('O', NULL, &options->orderfile, + N_("control the order in which files appear in the output")), + OPT_CALLBACK_F(0, "rotate-to", options, N_("<path>"), + N_("show the change in the specified path first"), + PARSE_OPT_NONEG, diff_opt_rotate_to), + OPT_CALLBACK_F(0, "skip-to", options, N_("<path>"), + N_("skip the output to the specified path"), + PARSE_OPT_NONEG, diff_opt_rotate_to), + OPT_CALLBACK_F(0, "find-object", options, N_("<object-id>"), + N_("look for differences that change the number of occurrences of the specified object"), + PARSE_OPT_NONEG, diff_opt_find_object), + OPT_CALLBACK_F(0, "diff-filter", options, N_("[(A|C|D|M|R|T|U|X|B)...[*]]"), + N_("select files by diff type"), + PARSE_OPT_NONEG, diff_opt_diff_filter), + { OPTION_CALLBACK, 0, "output", options, N_("<file>"), + N_("output to a specific file"), + PARSE_OPT_NONEG, NULL, 0, diff_opt_output }, + + OPT_END() + }; + + return parse_options_concat(opts, parseopts); +} + +int diff_opt_parse(struct diff_options *options, + const char **av, int ac, const char *prefix) +{ + struct option no_options[] = { OPT_END() }; + struct option *parseopts = add_diff_options(no_options, options); + + if (!prefix) + prefix = ""; + + ac = parse_options(ac, av, prefix, parseopts, NULL, + PARSE_OPT_KEEP_DASHDASH | + PARSE_OPT_KEEP_UNKNOWN_OPT | + PARSE_OPT_NO_INTERNAL_HELP | + PARSE_OPT_ONE_SHOT | + PARSE_OPT_STOP_AT_NON_OPTION); + free(parseopts); + + return ac; } int parse_rename_score(const char **cp_p) @@ -4874,47 +5785,6 @@ int parse_rename_score(const char **cp_p) return (int)((num >= scale) ? MAX_SCORE : (MAX_SCORE * num / scale)); } -static int diff_scoreopt_parse(const char *opt) -{ - int opt1, opt2, cmd; - - if (*opt++ != '-') - return -1; - cmd = *opt++; - if (cmd == '-') { - /* convert the long-form arguments into short-form versions */ - if (skip_prefix(opt, "break-rewrites", &opt)) { - if (*opt == 0 || *opt++ == '=') - cmd = 'B'; - } else if (skip_prefix(opt, "find-copies", &opt)) { - if (*opt == 0 || *opt++ == '=') - cmd = 'C'; - } else if (skip_prefix(opt, "find-renames", &opt)) { - if (*opt == 0 || *opt++ == '=') - cmd = 'M'; - } - } - if (cmd != 'M' && cmd != 'C' && cmd != 'B') - return -1; /* that is not a -M, -C, or -B option */ - - opt1 = parse_rename_score(&opt); - if (cmd != 'B') - opt2 = 0; - else { - if (*opt == 0) - opt2 = 0; - else if (*opt != '/') - return -1; /* we expect -B80/99 or -B80 */ - else { - opt++; - opt2 = parse_rename_score(&opt); - } - } - if (*opt != 0) - return -1; - return opt1 | (opt2 << 16); -} - struct diff_queue_struct diff_queued_diff; void diff_q(struct diff_queue_struct *queue, struct diff_filepair *dp) @@ -4942,13 +5812,20 @@ void diff_free_filepair(struct diff_filepair *p) free(p); } +void diff_free_queue(struct diff_queue_struct *q) +{ + for (int i = 0; i < q->nr; i++) + diff_free_filepair(q->queue[i]); + free(q->queue); +} + const char *diff_aligned_abbrev(const struct object_id *oid, int len) { int abblen; const char *abbrev; /* Do we want all 40 hex characters? */ - if (len == GIT_SHA1_HEXSZ) + if (len == the_hash_algo->hexsz) return oid_to_hex(oid); /* An abbreviated value is fine, possibly followed by an ellipsis. */ @@ -4978,7 +5855,7 @@ const char *diff_aligned_abbrev(const struct object_id *oid, int len) * the automatic sizing is supposed to give abblen that ensures * uniqueness across all objects (statistically speaking). */ - if (abblen < GIT_SHA1_HEXSZ - 3) { + if (abblen < the_hash_algo->hexsz - 3) { static char hex[GIT_MAX_HEXSZ + 1]; if (len < abblen && abblen <= len + 2) xsnprintf(hex, sizeof(hex), "%s%.*s", abbrev, len+3-abblen, ".."); @@ -5050,7 +5927,7 @@ int diff_unmodified_pair(struct diff_filepair *p) * dealing with a change. */ if (one->oid_valid && two->oid_valid && - !oidcmp(&one->oid, &two->oid) && + oideq(&one->oid, &two->oid) && !one->dirty_submodule && !two->dirty_submodule) return 1; /* no change */ if (!one->oid_valid && !two->oid_valid) @@ -5060,12 +5937,28 @@ int diff_unmodified_pair(struct diff_filepair *p) static void diff_flush_patch(struct diff_filepair *p, struct diff_options *o) { - if (diff_unmodified_pair(p)) + int include_conflict_headers = + (additional_headers(o, p->one->path) && + !o->pickaxe_opts && + (!o->filter || filter_bit_tst(DIFF_STATUS_UNMERGED, o))); + + /* + * Check if we can return early without showing a diff. Note that + * diff_filepair only stores {oid, path, mode, is_valid} + * information for each path, and thus diff_unmodified_pair() only + * considers those bits of info. However, we do not want pairs + * created by create_filepairs_for_header_only_notifications() + * (which always look like unmodified pairs) to be ignored, so + * return early if both p is unmodified AND we don't want to + * include_conflict_headers. + */ + if (diff_unmodified_pair(p) && !include_conflict_headers) return; + /* Actually, we can also return early to avoid showing tree diffs */ if ((DIFF_FILE_VALID(p->one) && S_ISDIR(p->one->mode)) || (DIFF_FILE_VALID(p->two) && S_ISDIR(p->two->mode))) - return; /* no tree diffs in patch format */ + return; run_diff(p, o); } @@ -5096,10 +5989,19 @@ static void diff_flush_checkdiff(struct diff_filepair *p, run_checkdiff(p, o); } -int diff_queue_is_empty(void) +int diff_queue_is_empty(struct diff_options *o) { struct diff_queue_struct *q = &diff_queued_diff; int i; + int include_conflict_headers = + (o->additional_path_headers && + strmap_get_size(o->additional_path_headers) && + !o->pickaxe_opts && + (!o->filter || filter_bit_tst(DIFF_STATUS_UNMERGED, o))); + + if (include_conflict_headers) + return 0; + for (i = 0; i < q->nr; i++) if (!diff_unmodified_pair(q->queue[i])) return 0; @@ -5184,7 +6086,7 @@ static void diff_resolve_rename_copy(void) else p->status = DIFF_STATUS_RENAMED; } - else if (oidcmp(&p->one->oid, &p->two->oid) || + else if (!oideq(&p->one->oid, &p->two->oid) || p->one->mode != p->two->mode || p->one->dirty_submodule || p->two->dirty_submodule || @@ -5312,7 +6214,7 @@ static void diff_summary(struct diff_options *opt, struct diff_filepair *p) } struct patch_id_t { - git_SHA_CTX *ctx; + git_hash_ctx *ctx; int patchlen; }; @@ -5329,45 +6231,61 @@ static int remove_space(char *line, int len) return dst - line; } -static void patch_id_consume(void *priv, char *line, unsigned long len) +void flush_one_hunk(struct object_id *result, git_hash_ctx *ctx) +{ + unsigned char hash[GIT_MAX_RAWSZ]; + unsigned short carry = 0; + int i; + + the_hash_algo->final_fn(hash, ctx); + the_hash_algo->init_fn(ctx); + /* 20-byte sum, with carry */ + for (i = 0; i < the_hash_algo->rawsz; ++i) { + carry += result->hash[i] + hash[i]; + result->hash[i] = carry; + carry >>= 8; + } +} + +static int patch_id_consume(void *priv, char *line, unsigned long len) { struct patch_id_t *data = priv; int new_len; - /* Ignore line numbers when computing the SHA1 of the patch */ - if (starts_with(line, "@@ -")) - return; - + if (len > 12 && starts_with(line, "\\ ")) + return 0; new_len = remove_space(line, len); - git_SHA1_Update(data->ctx, line, new_len); + the_hash_algo->update_fn(data->ctx, line, new_len); data->patchlen += new_len; + return 0; } -static void patch_id_add_string(git_SHA_CTX *ctx, const char *str) +static void patch_id_add_string(git_hash_ctx *ctx, const char *str) { - git_SHA1_Update(ctx, str, strlen(str)); + the_hash_algo->update_fn(ctx, str, strlen(str)); } -static void patch_id_add_mode(git_SHA_CTX *ctx, unsigned mode) +static void patch_id_add_mode(git_hash_ctx *ctx, unsigned mode) { /* large enough for 2^32 in octal */ char buf[12]; int len = xsnprintf(buf, sizeof(buf), "%06o", mode); - git_SHA1_Update(ctx, buf, len); + the_hash_algo->update_fn(ctx, buf, len); } -/* returns 0 upon success, and writes result into sha1 */ +/* returns 0 upon success, and writes result into oid */ static int diff_get_patch_id(struct diff_options *options, struct object_id *oid, int diff_header_only) { struct diff_queue_struct *q = &diff_queued_diff; int i; - git_SHA_CTX ctx; + git_hash_ctx ctx; struct patch_id_t data; - git_SHA1_Init(&ctx); + the_hash_algo->init_fn(&ctx); memset(&data, 0, sizeof(struct patch_id_t)); data.ctx = &ctx; + oidclr(oid); for (i = 0; i < q->nr; i++) { xpparam_t xpp; @@ -5390,75 +6308,77 @@ static int diff_get_patch_id(struct diff_options *options, struct object_id *oid if (DIFF_PAIR_UNMERGED(p)) continue; - diff_fill_oid_info(p->one); - diff_fill_oid_info(p->two); + diff_fill_oid_info(p->one, options->repo->index); + diff_fill_oid_info(p->two, options->repo->index); len1 = remove_space(p->one->path, strlen(p->one->path)); len2 = remove_space(p->two->path, strlen(p->two->path)); patch_id_add_string(&ctx, "diff--git"); patch_id_add_string(&ctx, "a/"); - git_SHA1_Update(&ctx, p->one->path, len1); + the_hash_algo->update_fn(&ctx, p->one->path, len1); patch_id_add_string(&ctx, "b/"); - git_SHA1_Update(&ctx, p->two->path, len2); + the_hash_algo->update_fn(&ctx, p->two->path, len2); if (p->one->mode == 0) { patch_id_add_string(&ctx, "newfilemode"); patch_id_add_mode(&ctx, p->two->mode); - patch_id_add_string(&ctx, "---/dev/null"); - patch_id_add_string(&ctx, "+++b/"); - git_SHA1_Update(&ctx, p->two->path, len2); } else if (p->two->mode == 0) { patch_id_add_string(&ctx, "deletedfilemode"); patch_id_add_mode(&ctx, p->one->mode); - patch_id_add_string(&ctx, "---a/"); - git_SHA1_Update(&ctx, p->one->path, len1); - patch_id_add_string(&ctx, "+++/dev/null"); - } else { - patch_id_add_string(&ctx, "---a/"); - git_SHA1_Update(&ctx, p->one->path, len1); - patch_id_add_string(&ctx, "+++b/"); - git_SHA1_Update(&ctx, p->two->path, len2); + } else if (p->one->mode != p->two->mode) { + patch_id_add_string(&ctx, "oldmode"); + patch_id_add_mode(&ctx, p->one->mode); + patch_id_add_string(&ctx, "newmode"); + patch_id_add_mode(&ctx, p->two->mode); } - if (diff_header_only) - continue; - - if (fill_mmfile(&mf1, p->one) < 0 || - fill_mmfile(&mf2, p->two) < 0) - return error("unable to read files to diff"); + if (diff_header_only) { + /* don't do anything since we're only populating header info */ + } else if (diff_filespec_is_binary(options->repo, p->one) || + diff_filespec_is_binary(options->repo, p->two)) { + the_hash_algo->update_fn(&ctx, oid_to_hex(&p->one->oid), + the_hash_algo->hexsz); + the_hash_algo->update_fn(&ctx, oid_to_hex(&p->two->oid), + the_hash_algo->hexsz); + } else { + if (p->one->mode == 0) { + patch_id_add_string(&ctx, "---/dev/null"); + patch_id_add_string(&ctx, "+++b/"); + the_hash_algo->update_fn(&ctx, p->two->path, len2); + } else if (p->two->mode == 0) { + patch_id_add_string(&ctx, "---a/"); + the_hash_algo->update_fn(&ctx, p->one->path, len1); + patch_id_add_string(&ctx, "+++/dev/null"); + } else { + patch_id_add_string(&ctx, "---a/"); + the_hash_algo->update_fn(&ctx, p->one->path, len1); + patch_id_add_string(&ctx, "+++b/"); + the_hash_algo->update_fn(&ctx, p->two->path, len2); + } - if (diff_filespec_is_binary(p->one) || - diff_filespec_is_binary(p->two)) { - git_SHA1_Update(&ctx, oid_to_hex(&p->one->oid), - GIT_SHA1_HEXSZ); - git_SHA1_Update(&ctx, oid_to_hex(&p->two->oid), - GIT_SHA1_HEXSZ); - continue; + if (fill_mmfile(options->repo, &mf1, p->one) < 0 || + fill_mmfile(options->repo, &mf2, p->two) < 0) + return error("unable to read files to diff"); + xpp.flags = 0; + xecfg.ctxlen = 3; + xecfg.flags = XDL_EMIT_NO_HUNK_HDR; + if (xdi_diff_outf(&mf1, &mf2, NULL, + patch_id_consume, &data, &xpp, &xecfg)) + return error("unable to generate patch-id diff for %s", + p->one->path); } - - xpp.flags = 0; - xecfg.ctxlen = 3; - xecfg.flags = 0; - if (xdi_diff_outf(&mf1, &mf2, patch_id_consume, &data, - &xpp, &xecfg)) - return error("unable to generate patch-id diff for %s", - p->one->path); + flush_one_hunk(oid, &ctx); } - git_SHA1_Final(oid->hash, &ctx); return 0; } int diff_flush_patch_id(struct diff_options *options, struct object_id *oid, int diff_header_only) { struct diff_queue_struct *q = &diff_queued_diff; - int i; int result = diff_get_patch_id(options, oid, diff_header_only); - for (i = 0; i < q->nr; i++) - diff_free_filepair(q->queue[i]); - - free(q->queue); + diff_free_queue(q); DIFF_QUEUE_CLEAR(q); return result; @@ -5490,7 +6410,7 @@ static int is_summary_empty(const struct diff_queue_struct *q) } static const char rename_limit_warning[] = -N_("inexact rename detection was skipped due to too many files."); +N_("exhaustive rename detection was skipped due to too many files."); static const char degrade_cc_to_c_warning[] = N_("only found copies from modified paths due to too many files."); @@ -5512,6 +6432,54 @@ void diff_warn_rename_limit(const char *varname, int needed, int degraded_cc) warning(_(rename_limit_advice), varname, needed); } +static void create_filepairs_for_header_only_notifications(struct diff_options *o) +{ + struct strset present; + struct diff_queue_struct *q = &diff_queued_diff; + struct hashmap_iter iter; + struct strmap_entry *e; + int i; + + strset_init_with_options(&present, /*pool*/ NULL, /*strdup*/ 0); + + /* + * Find out which paths exist in diff_queued_diff, preferring + * one->path for any pair that has multiple paths. + */ + for (i = 0; i < q->nr; i++) { + struct diff_filepair *p = q->queue[i]; + char *path = p->one->path ? p->one->path : p->two->path; + + if (strmap_contains(o->additional_path_headers, path)) + strset_add(&present, path); + } + + /* + * Loop over paths in additional_path_headers; for each NOT already + * in diff_queued_diff, create a synthetic filepair and insert that + * into diff_queued_diff. + */ + strmap_for_each_entry(o->additional_path_headers, &iter, e) { + if (!strset_contains(&present, e->key)) { + struct diff_filespec *one, *two; + struct diff_filepair *p; + + one = alloc_filespec(e->key); + two = alloc_filespec(e->key); + fill_filespec(one, null_oid(), 0, 0); + fill_filespec(two, null_oid(), 0, 0); + p = diff_queue(q, one, two); + p->status = DIFF_STATUS_MODIFIED; + } + } + + /* Re-sort the filepairs */ + diffcore_fix_diff_index(); + + /* Cleanup */ + strset_clear(&present); +} + static void diff_flush_patch_all_file_pairs(struct diff_options *o) { int i; @@ -5524,6 +6492,9 @@ static void diff_flush_patch_all_file_pairs(struct diff_options *o) if (o->color_moved) o->emitted_symbols = &esm; + if (o->additional_path_headers) + create_filepairs_for_header_only_notifications(o); + for (i = 0; i < q->nr; i++) { struct diff_filepair *p = q->queue[i]; if (check_pair_status(p)) @@ -5532,20 +6503,18 @@ static void diff_flush_patch_all_file_pairs(struct diff_options *o) if (o->emitted_symbols) { if (o->color_moved) { - struct hashmap add_lines, del_lines; - - hashmap_init(&del_lines, - (hashmap_cmp_fn)moved_entry_cmp, o, 0); - hashmap_init(&add_lines, - (hashmap_cmp_fn)moved_entry_cmp, o, 0); + struct mem_pool entry_pool; + struct moved_entry_list *entry_list; - add_lines_to_move_detection(o, &add_lines, &del_lines); - mark_color_as_moved(o, &add_lines, &del_lines); + mem_pool_init(&entry_pool, 1024 * 1024); + entry_list = add_lines_to_move_detection(o, + &entry_pool); + mark_color_as_moved(o, entry_list); if (o->color_moved == COLOR_MOVED_ZEBRA_DIM) dim_moved_lines(o); - hashmap_free(&add_lines, 0); - hashmap_free(&del_lines, 0); + mem_pool_discard(&entry_pool, 0); + free(entry_list); } for (i = 0; i < esm.nr; i++) @@ -5553,8 +6522,37 @@ static void diff_flush_patch_all_file_pairs(struct diff_options *o) for (i = 0; i < esm.nr; i++) free((void *)esm.buf[i].line); + esm.nr = 0; + + o->emitted_symbols = NULL; + } +} + +static void diff_free_file(struct diff_options *options) +{ + if (options->close_file) + fclose(options->file); +} + +static void diff_free_ignore_regex(struct diff_options *options) +{ + int i; + + for (i = 0; i < options->ignore_regex_nr; i++) { + regfree(options->ignore_regex[i]); + free(options->ignore_regex[i]); } - esm.nr = 0; + free(options->ignore_regex); +} + +void diff_free(struct diff_options *options) +{ + if (options->no_free) + return; + + diff_free_file(options); + diff_free_ignore_regex(options); + clear_pathspec(&options->pathspec); } void diff_flush(struct diff_options *options) @@ -5568,7 +6566,7 @@ void diff_flush(struct diff_options *options) * Order: raw, stat, summary, patch * or: name/name-status/checkdiff (other bits clear) */ - if (!q->nr) + if (!q->nr && !options->additional_path_headers) goto free_queue; if (output_format & (DIFF_FORMAT_RAW | @@ -5590,12 +6588,7 @@ void diff_flush(struct diff_options *options) dirstat_by_line) { struct diffstat_t diffstat; - memset(&diffstat, 0, sizeof(struct diffstat_t)); - for (i = 0; i < q->nr; i++) { - struct diff_filepair *p = q->queue[i]; - if (check_pair_status(p)) - diff_flush_stat(p, options, &diffstat); - } + compute_diffstat(options, &diffstat, q); if (output_format & DIFF_FORMAT_NUMSTAT) show_numstat(&diffstat, options); if (output_format & DIFF_FORMAT_DIFFSTAT) @@ -5625,8 +6618,7 @@ void diff_flush(struct diff_options *options) * options->file to /dev/null should be safe, because we * aren't supposed to produce any output anyway. */ - if (options->close_file) - fclose(options->file); + diff_free_file(options); options->file = xfopen("/dev/null", "w"); options->close_file = 1; options->color_moved = 0; @@ -5654,13 +6646,10 @@ void diff_flush(struct diff_options *options) if (output_format & DIFF_FORMAT_CALLBACK) options->format_callback(q, options, options->format_callback_data); - for (i = 0; i < q->nr; i++) - diff_free_filepair(q->queue[i]); free_queue: - free(q->queue); + diff_free_queue(q); DIFF_QUEUE_CLEAR(q); - if (options->close_file) - fclose(options->file); + diff_free(options); /* * Report the content-level differences with HAS_CHANGES; @@ -5729,20 +6718,28 @@ static void diffcore_apply_filter(struct diff_options *options) } /* Check whether two filespecs with the same mode and size are identical */ -static int diff_filespec_is_identical(struct diff_filespec *one, +static int diff_filespec_is_identical(struct repository *r, + struct diff_filespec *one, struct diff_filespec *two) { if (S_ISGITLINK(one->mode)) return 0; - if (diff_populate_filespec(one, 0)) + if (diff_populate_filespec(r, one, NULL)) return 0; - if (diff_populate_filespec(two, 0)) + if (diff_populate_filespec(r, two, NULL)) return 0; return !memcmp(one->data, two->data, one->size); } -static int diff_filespec_check_stat_unmatch(struct diff_filepair *p) +static int diff_filespec_check_stat_unmatch(struct repository *r, + struct diff_filepair *p) { + struct diff_populate_filespec_options dpf_options = { + .check_size_only = 1, + .missing_object_cb = diff_queued_diff_prefetch, + .missing_object_data = r, + }; + if (p->done_skip_stat_unmatch) return p->skip_stat_unmatch_result; @@ -5765,10 +6762,10 @@ static int diff_filespec_check_stat_unmatch(struct diff_filepair *p) !DIFF_FILE_VALID(p->two) || (p->one->oid_valid && p->two->oid_valid) || (p->one->mode != p->two->mode) || - diff_populate_filespec(p->one, CHECK_SIZE_ONLY) || - diff_populate_filespec(p->two, CHECK_SIZE_ONLY) || + diff_populate_filespec(r, p->one, &dpf_options) || + diff_populate_filespec(r, p->two, &dpf_options) || (p->one->size != p->two->size) || - !diff_filespec_is_identical(p->one, p->two)) /* (2) */ + !diff_filespec_is_identical(r, p->one, p->two)) /* (2) */ p->skip_stat_unmatch_result = 1; return p->skip_stat_unmatch_result; } @@ -5783,7 +6780,7 @@ static void diffcore_skip_stat_unmatch(struct diff_options *diffopt) for (i = 0; i < q->nr; i++) { struct diff_filepair *p = q->queue[i]; - if (diff_filespec_check_stat_unmatch(p)) + if (diff_filespec_check_stat_unmatch(diffopt->repo, p)) diff_q(&outq, p); else { /* @@ -5811,21 +6808,73 @@ static int diffnamecmp(const void *a_, const void *b_) return strcmp(name_a, name_b); } -void diffcore_fix_diff_index(struct diff_options *options) +void diffcore_fix_diff_index(void) { struct diff_queue_struct *q = &diff_queued_diff; QSORT(q->queue, q->nr, diffnamecmp); } +void diff_add_if_missing(struct repository *r, + struct oid_array *to_fetch, + const struct diff_filespec *filespec) +{ + if (filespec && filespec->oid_valid && + !S_ISGITLINK(filespec->mode) && + oid_object_info_extended(r, &filespec->oid, NULL, + OBJECT_INFO_FOR_PREFETCH)) + oid_array_append(to_fetch, &filespec->oid); +} + +void diff_queued_diff_prefetch(void *repository) +{ + struct repository *repo = repository; + int i; + struct diff_queue_struct *q = &diff_queued_diff; + struct oid_array to_fetch = OID_ARRAY_INIT; + + for (i = 0; i < q->nr; i++) { + struct diff_filepair *p = q->queue[i]; + diff_add_if_missing(repo, &to_fetch, p->one); + diff_add_if_missing(repo, &to_fetch, p->two); + } + + /* + * NEEDSWORK: Consider deduplicating the OIDs sent. + */ + promisor_remote_get_direct(repo, to_fetch.oid, to_fetch.nr); + + oid_array_clear(&to_fetch); +} + void diffcore_std(struct diff_options *options) { + int output_formats_to_prefetch = DIFF_FORMAT_DIFFSTAT | + DIFF_FORMAT_NUMSTAT | + DIFF_FORMAT_PATCH | + DIFF_FORMAT_SHORTSTAT | + DIFF_FORMAT_DIRSTAT; + + /* + * Check if the user requested a blob-data-requiring diff output and/or + * break-rewrite detection (which requires blob data). If yes, prefetch + * the diff pairs. + * + * If no prefetching occurs, diffcore_rename() will prefetch if it + * decides that it needs inexact rename detection. + */ + if (options->repo == the_repository && has_promisor_remote() && + (options->output_format & output_formats_to_prefetch || + options->pickaxe_opts & DIFF_PICKAXE_KINDS_MASK)) + diff_queued_diff_prefetch(options->repo); + /* NOTE please keep the following in sync with diff_tree_combined() */ if (options->skip_stat_unmatch) diffcore_skip_stat_unmatch(options); if (!options->found_follow) { /* See try_to_follow_renames() in tree-diff.c */ if (options->break_opt != -1) - diffcore_break(options->break_opt); + diffcore_break(options->repo, + options->break_opt); if (options->detect_rename) diffcore_rename(options); if (options->break_opt != -1) @@ -5835,6 +6884,8 @@ void diffcore_std(struct diff_options *options) diffcore_pickaxe(options); if (options->orderfile) diffcore_order(options->orderfile); + if (options->rotate_to) + diffcore_rotate(options); if (!options->found_follow) /* See try_to_follow_renames() in tree-diff.c */ diff_resolve_rename_copy(); @@ -5892,6 +6943,20 @@ static int is_submodule_ignored(const char *path, struct diff_options *options) return ignored; } +void compute_diffstat(struct diff_options *options, + struct diffstat_t *diffstat, + struct diff_queue_struct *q) +{ + int i; + + memset(diffstat, 0, sizeof(struct diffstat_t)); + for (i = 0; i < q->nr; i++) { + struct diff_filepair *p = q->queue[i]; + if (check_pair_status(p)) + diff_flush_stat(p, options, diffstat); + } +} + void diff_addremove(struct diff_options *options, int addremove, unsigned mode, const struct object_id *oid, @@ -5976,8 +7041,11 @@ void diff_change(struct diff_options *options, return; if (options->flags.quick && options->skip_stat_unmatch && - !diff_filespec_check_stat_unmatch(p)) + !diff_filespec_check_stat_unmatch(options->repo, p)) { + diff_free_filespec_data(p->one); + diff_free_filespec_data(p->two); return; + } options->flags.has_changes = 1; } @@ -5998,23 +7066,21 @@ struct diff_filepair *diff_unmerge(struct diff_options *options, const char *pat return pair; } -static char *run_textconv(const char *pgm, struct diff_filespec *spec, - size_t *outsize) +static char *run_textconv(struct repository *r, + const char *pgm, + struct diff_filespec *spec, + size_t *outsize) { struct diff_tempfile *temp; - const char *argv[3]; - const char **arg = argv; struct child_process child = CHILD_PROCESS_INIT; struct strbuf buf = STRBUF_INIT; int err = 0; - temp = prepare_temp_file(spec->path, spec); - *arg++ = pgm; - *arg++ = temp->name; - *arg = NULL; + temp = prepare_temp_file(r, spec); + strvec_push(&child.args, pgm); + strvec_push(&child.args, temp->name); child.use_shell = 1; - child.argv = argv; child.out = -1; if (start_command(&child)) { remove_tempfile(); @@ -6035,7 +7101,8 @@ static char *run_textconv(const char *pgm, struct diff_filespec *spec, return strbuf_detach(&buf, outsize); } -size_t fill_textconv(struct userdiff_driver *driver, +size_t fill_textconv(struct repository *r, + struct userdiff_driver *driver, struct diff_filespec *df, char **outbuf) { @@ -6046,7 +7113,7 @@ size_t fill_textconv(struct userdiff_driver *driver, *outbuf = ""; return 0; } - if (diff_populate_filespec(df, 0)) + if (diff_populate_filespec(r, df, NULL)) die("unable to read files to diff"); *outbuf = df->data; return df->size; @@ -6063,7 +7130,7 @@ size_t fill_textconv(struct userdiff_driver *driver, return size; } - *outbuf = run_textconv(driver->textconv, df, &size); + *outbuf = run_textconv(r, driver->textconv, df, &size); if (!*outbuf) die("unable to read files to diff"); @@ -6083,7 +7150,8 @@ size_t fill_textconv(struct userdiff_driver *driver, return size; } -int textconv_object(const char *path, +int textconv_object(struct repository *r, + const char *path, unsigned mode, const struct object_id *oid, int oid_valid, @@ -6095,13 +7163,13 @@ int textconv_object(const char *path, df = alloc_filespec(path); fill_filespec(df, oid, oid_valid, mode); - textconv = get_textconv(df); + textconv = get_textconv(r, df); if (!textconv) { free_filespec(df); return 0; } - *buf_size = fill_textconv(textconv, df, buf); + *buf_size = fill_textconv(r, textconv, df, buf); free_filespec(df); return 1; } |