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comparison lib/lib.c @ 1525:95cb37adb024 draft

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Factor out printf-style escape parsing logic from echo.c.
author Rob Landley <rob@landley.net>
date Sat, 18 Oct 2014 17:14:12 -0500
parents e5b52720f539
children b50de98c9708
comparison
equal deleted inserted replaced
1524:2ce0f52103a9 1525:95cb37adb024
279 if (!needle) return -1; 279 if (!needle) return -1;
280 off = strchr(haystack, needle); 280 off = strchr(haystack, needle);
281 if (!off) return -1; 281 if (!off) return -1;
282 282
283 return off-haystack; 283 return off-haystack;
284 }
285
286 int unescape(char c)
287 {
288 char *from = "\\abefnrtv", *to = "\\\a\b\033\f\n\r\t\v";
289 int idx = stridx(from, c);
290
291 return (idx == -1) ? 0 : to[idx];
284 } 292 }
285 293
286 // If *a starts with b, advance *a past it and return 1, else return 0; 294 // If *a starts with b, advance *a past it and return 1, else return 0;
287 int strstart(char **a, char *b) 295 int strstart(char **a, char *b)
288 { 296 {