diff options
Diffstat (limited to 'git-compat-util.h')
| -rw-r--r-- | git-compat-util.h | 27 |
1 files changed, 23 insertions, 4 deletions
diff --git a/git-compat-util.h b/git-compat-util.h index 96f55547a..9de318071 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -349,13 +349,32 @@ extern void set_die_is_recursing_routine(int (*routine)(void)); extern int starts_with(const char *str, const char *prefix); extern int ends_with(const char *str, const char *suffix); -static inline const char *skip_prefix(const char *str, const char *prefix) +/* + * If the string "str" begins with the string found in "prefix", return 1. + * The "out" parameter is set to "str + strlen(prefix)" (i.e., to the point in + * the string right after the prefix). + * + * Otherwise, return 0 and leave "out" untouched. + * + * Examples: + * + * [extract branch name, fail if not a branch] + * if (!skip_prefix(ref, "refs/heads/", &branch) + * return -1; + * + * [skip prefix if present, otherwise use whole string] + * skip_prefix(name, "refs/heads/", &name); + */ +static inline int skip_prefix(const char *str, const char *prefix, + const char **out) { do { - if (!*prefix) - return str; + if (!*prefix) { + *out = str; + return 1; + } } while (*str++ == *prefix++); - return NULL; + return 0; } #if defined(NO_MMAP) || defined(USE_WIN32_MMAP) |