diff options
Diffstat (limited to 'object.h')
| -rw-r--r-- | object.h | 124 |
1 files changed, 123 insertions, 1 deletions
@@ -1,9 +1,10 @@ #ifndef OBJECT_H #define OBJECT_H -#include "cache.h" +#include "hash-ll.h" struct buffer_slab; +struct repository; struct parsed_object_pool { struct object **obj_hash; @@ -57,6 +58,8 @@ struct object_array { #define OBJECT_ARRAY_INIT { 0 } +void object_array_init(struct object_array *array); + /* * object flag allocation: * revision.h: 0---------10 15 23------27 @@ -78,9 +81,74 @@ struct object_array { * reflog.c: 10--12 * builtin/show-branch.c: 0-------------------------------------------26 * builtin/unpack-objects.c: 2021 + * pack-bitmap.h: 22 */ #define FLAG_BITS 28 +#define TYPE_BITS 3 + +/* + * Values in this enum (except those outside the 3 bit range) are part + * of pack file format. See gitformat-pack(5) for more information. + */ +enum object_type { + OBJ_BAD = -1, + OBJ_NONE = 0, + OBJ_COMMIT = 1, + OBJ_TREE = 2, + OBJ_BLOB = 3, + OBJ_TAG = 4, + /* 5 for future expansion */ + OBJ_OFS_DELTA = 6, + OBJ_REF_DELTA = 7, + OBJ_ANY, + OBJ_MAX +}; + +/* unknown mode (impossible combination S_IFIFO|S_IFCHR) */ +#define S_IFINVALID 0030000 + +/* + * A "directory link" is a link to another git directory. + * + * The value 0160000 is not normally a valid mode, and + * also just happens to be S_IFDIR + S_IFLNK + */ +#define S_IFGITLINK 0160000 +#define S_ISGITLINK(m) (((m) & S_IFMT) == S_IFGITLINK) + +#define S_ISSPARSEDIR(m) ((m) == S_IFDIR) + +static inline enum object_type object_type(unsigned int mode) +{ + return S_ISDIR(mode) ? OBJ_TREE : + S_ISGITLINK(mode) ? OBJ_COMMIT : + OBJ_BLOB; +} + +#define ce_permissions(mode) (((mode) & 0100) ? 0755 : 0644) +static inline unsigned int create_ce_mode(unsigned int mode) +{ + if (S_ISLNK(mode)) + return S_IFLNK; + if (S_ISSPARSEDIR(mode)) + return S_IFDIR; + if (S_ISDIR(mode) || S_ISGITLINK(mode)) + return S_IFGITLINK; + return S_IFREG | ce_permissions(mode); +} + +static inline unsigned int canon_mode(unsigned int mode) +{ + if (S_ISREG(mode)) + return S_IFREG | ce_permissions(mode); + if (S_ISLNK(mode)) + return S_IFLNK; + if (S_ISDIR(mode)) + return S_IFDIR; + return S_IFGITLINK; +} + /* * The object type is stored in 3 bits. */ @@ -123,6 +191,24 @@ void *create_object(struct repository *r, const struct object_id *oid, void *obj void *object_as_type(struct object *obj, enum object_type type, int quiet); + +static inline const char *parse_mode(const char *str, uint16_t *modep) +{ + unsigned char c; + unsigned int mode = 0; + + if (*str == ' ') + return NULL; + + while ((c = *str++) != ' ') { + if (c < '0' || c > '7') + return NULL; + mode = (mode << 3) + (c - '0'); + } + *modep = mode; + return str; +} + /* * Returns the object, having parsed it to find out what it is. * @@ -130,6 +216,7 @@ void *object_as_type(struct object *obj, enum object_type type, int quiet); */ enum parse_object_flags { PARSE_OBJECT_SKIP_HASH_CHECK = 1 << 0, + PARSE_OBJECT_DISCARD_TREE = 1 << 1, }; struct object *parse_object(struct repository *r, const struct object_id *oid); struct object *parse_object_with_flags(struct repository *r, @@ -170,6 +257,41 @@ struct object *lookup_unknown_object(struct repository *r, const struct object_i struct object *lookup_object_by_type(struct repository *r, const struct object_id *oid, enum object_type type); +enum peel_status { + /* object was peeled successfully: */ + PEEL_PEELED = 0, + + /* + * object cannot be peeled because the named object (or an + * object referred to by a tag in the peel chain), does not + * exist. + */ + PEEL_INVALID = -1, + + /* object cannot be peeled because it is not a tag: */ + PEEL_NON_TAG = -2, + + /* ref_entry contains no peeled value because it is a symref: */ + PEEL_IS_SYMREF = -3, + + /* + * ref_entry cannot be peeled because it is broken (i.e., the + * symbolic reference cannot even be resolved to an object + * name): + */ + PEEL_BROKEN = -4 +}; + +/* + * Peel the named object; i.e., if the object is a tag, resolve the + * tag recursively until a non-tag is found. If successful, store the + * result to oid and return PEEL_PEELED. If the object is not a tag + * or is not valid, return PEEL_NON_TAG or PEEL_INVALID, respectively, + * and leave oid unchanged. + */ +enum peel_status peel_object(struct repository *r, + const struct object_id *name, struct object_id *oid); + struct object_list *object_list_insert(struct object *item, struct object_list **list_p); |