diff options
| -rw-r--r-- | git-compat-util.h | 23 | ||||
| -rw-r--r-- | strbuf.c | 22 |
2 files changed, 45 insertions, 0 deletions
diff --git a/git-compat-util.h b/git-compat-util.h index cedad4d58..68b2ad531 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -485,6 +485,29 @@ static inline int skip_prefix(const char *str, const char *prefix, } /* + * If the string "str" is the same as the string in "prefix", then the "arg" + * parameter is set to the "def" parameter and 1 is returned. + * If the string "str" begins with the string found in "prefix" and then a + * "=" sign, then the "arg" parameter is set to "str + strlen(prefix) + 1" + * (i.e., to the point in the string right after the prefix and the "=" sign), + * and 1 is returned. + * + * Otherwise, return 0 and leave "arg" untouched. + * + * When we accept both a "--key" and a "--key=<val>" option, this function + * can be used instead of !strcmp(arg, "--key") and then + * skip_prefix(arg, "--key=", &arg) to parse such an option. + */ +int skip_to_optional_arg_default(const char *str, const char *prefix, + const char **arg, const char *def); + +static inline int skip_to_optional_arg(const char *str, const char *prefix, + const char **arg) +{ + return skip_to_optional_arg_default(str, prefix, arg, ""); +} + +/* * Like skip_prefix, but promises never to read past "len" bytes of the input * buffer, and returns the remaining number of bytes in "out" via "outlen". */ @@ -11,6 +11,28 @@ int starts_with(const char *str, const char *prefix) return 0; } +int skip_to_optional_arg_default(const char *str, const char *prefix, + const char **arg, const char *def) +{ + const char *p; + + if (!skip_prefix(str, prefix, &p)) + return 0; + + if (!*p) { + if (arg) + *arg = def; + return 1; + } + + if (*p != '=') + return 0; + + if (arg) + *arg = p + 1; + return 1; +} + /* * Used as the default ->buf value, so that people can always assume * buf is non NULL and ->buf is NUL terminated even for a freshly |