diff options
Diffstat (limited to 'git-compat-util.h')
| -rw-r--r-- | git-compat-util.h | 35 |
1 files changed, 33 insertions, 2 deletions
diff --git a/git-compat-util.h b/git-compat-util.h index de57f435e2..1e6592624d 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -97,8 +97,14 @@ struct strbuf; # define BARF_UNLESS_AN_ARRAY(arr) \ BUILD_ASSERT_OR_ZERO(!__builtin_types_compatible_p(__typeof__(arr), \ __typeof__(&(arr)[0]))) +# define BARF_UNLESS_COPYABLE(dst, src) \ + BUILD_ASSERT_OR_ZERO(__builtin_types_compatible_p(__typeof__(*(dst)), \ + __typeof__(*(src)))) #else # define BARF_UNLESS_AN_ARRAY(arr) 0 +# define BARF_UNLESS_COPYABLE(dst, src) \ + BUILD_ASSERT_OR_ZERO(0 ? ((*(dst) = *(src)), 0) : \ + sizeof(*(dst)) == sizeof(*(src))) #endif /* * ARRAY_SIZE - get the number of elements in a visible array @@ -1102,7 +1108,7 @@ int xstrncmpz(const char *s, const char *t, size_t len); #define REALLOC_ARRAY(x, alloc) (x) = xrealloc((x), st_mult(sizeof(*(x)), (alloc))) #define COPY_ARRAY(dst, src, n) copy_array((dst), (src), (n), sizeof(*(dst)) + \ - BUILD_ASSERT_OR_ZERO(sizeof(*(dst)) == sizeof(*(src)))) + BARF_UNLESS_COPYABLE((dst), (src))) static inline void copy_array(void *dst, const void *src, size_t n, size_t size) { if (n) @@ -1110,13 +1116,18 @@ static inline void copy_array(void *dst, const void *src, size_t n, size_t size) } #define MOVE_ARRAY(dst, src, n) move_array((dst), (src), (n), sizeof(*(dst)) + \ - BUILD_ASSERT_OR_ZERO(sizeof(*(dst)) == sizeof(*(src)))) + BARF_UNLESS_COPYABLE((dst), (src))) static inline void move_array(void *dst, const void *src, size_t n, size_t size) { if (n) memmove(dst, src, st_mult(size, n)); } +#define DUP_ARRAY(dst, src, n) do { \ + size_t dup_array_n_ = (n); \ + COPY_ARRAY(ALLOC_ARRAY((dst), dup_array_n_), (src), dup_array_n_); \ +} while (0) + /* * These functions help you allocate structs with flex arrays, and copy * the data directly into the array. For example, if you had: @@ -1214,6 +1225,7 @@ extern const unsigned char tolower_trans_tbl[256]; #undef isxdigit extern const unsigned char sane_ctype[256]; +extern const signed char hexval_table[256]; #define GIT_SPACE 0x01 #define GIT_DIGIT 0x02 #define GIT_ALPHA 0x04 @@ -1276,6 +1288,25 @@ static inline int skip_iprefix(const char *str, const char *prefix, return 0; } +/* + * Like skip_prefix_mem, but compare case-insensitively. Note that the + * comparison is done via tolower(), so it is strictly ASCII (no multi-byte + * characters or locale-specific conversions). + */ +static inline int skip_iprefix_mem(const char *buf, size_t len, + const char *prefix, + const char **out, size_t *outlen) +{ + do { + if (!*prefix) { + *out = buf; + *outlen = len; + return 1; + } + } while (len-- > 0 && tolower(*buf++) == tolower(*prefix++)); + return 0; +} + static inline int strtoul_ui(char const *s, int base, unsigned int *result) { unsigned long ul; |