diff options
Diffstat (limited to 'lib')
-rw-r--r-- | lib/lib.c | 23 | ||||
-rw-r--r-- | lib/lib.h | 1 |
2 files changed, 24 insertions, 0 deletions
@@ -436,6 +436,29 @@ int unescape(char c) return (idx == -1) ? 0 : to[idx]; } +// parse next character advancing pointer. echo requires leading 0 in octal esc +int unescape2(char **c, int echo) +{ + int idx = *((*c)++), i, off; + + if (idx != '\\' || !**c) return idx; + if (**c == 'c') return 31&*(++*c); + for (i = 0; i<4; i++) { + if (sscanf(*c, (char *[]){"0%3o%n"+!echo, "x%2x%n", "u%4x%n", "U%6x%n"}[i], + &idx, &off)) + { + *c += off; + + return idx; + } + } + + if (-1 == (idx = stridx("\\abeEfnrtv'\"?", **c))) return '\\'; + ++*c; + + return "\\\a\b\033\033\f\n\r\t\v'\"?"[idx]; +} + // If string ends with suffix return pointer to start of suffix in string, // else NULL char *strend(char *str, char *suffix) @@ -234,6 +234,7 @@ char *strlower(char *s); char *strafter(char *haystack, char *needle); char *chomp(char *s); int unescape(char c); +int unescape2(char **c, int echo); char *strend(char *str, char *suffix); int strstart(char **a, char *b); int strcasestart(char **a, char *b); |