diff options
Diffstat (limited to 'xs_regex.h')
| -rw-r--r-- | xs_regex.h | 49 |
1 files changed, 49 insertions, 0 deletions
@@ -8,6 +8,8 @@ xs_list *xs_regex_split_n(const char *str, const char *rx, int count); #define xs_regex_split(str, rx) xs_regex_split_n(str, rx, XS_ALL) xs_list *xs_regex_match_n(const char *str, const char *rx, int count); #define xs_regex_match(str, rx) xs_regex_match_n(str, rx, XS_ALL) +xs_list *xs_regex_replace_n(const char *str, const char *rx, const char *rep, int count); +#define xs_regex_replace(str, rx, rep) xs_regex_replace_n(str, rx, rep, XS_ALL) #ifdef XS_IMPLEMENTATION @@ -75,6 +77,53 @@ xs_list *xs_regex_match_n(const char *str, const char *rx, int count) return list; } + +xs_list *xs_regex_replace_n(const char *str, const char *rx, const char *rep, int count) +/* replaces all matches with the rep string. If it contains unescaped &, + they are replaced with the match */ +{ + xs_str *s = xs_str_new(NULL); + xs *split = xs_regex_split_n(str, rx, count); + xs_list *p; + xs_val *v; + int n = 0; + int pholder = !!strchr(rep, '&'); + + p = split; + while (xs_list_iter(&p, &v)) { + if (n & 0x1) { + if (pholder) { + /* rep has a placeholder; process char by char */ + const char *p = rep; + + while (*p) { + if (*p == '&') + s = xs_str_cat(s, v); + else { + if (*p == '\\') + p++; + + if (!*p) + break; + + s = xs_append_m(s, p, 1); + } + + p++; + } + } + else + s = xs_str_cat(s, rep); + } + else + s = xs_str_cat(s, v); + + n++; + } + + return s; +} + #endif /* XS_IMPLEMENTATION */ #endif /* XS_REGEX_H */ |