src/regex/regerror.c

   1 #include <string.h>
   2 #include <regex.h>
   3 #include <stdio.h>
   4 #include "locale_impl.h"
   5
   6 /* Error message strings for error codes listed in `regex.h'.  This list
   7    needs to be in sync with the codes listed there, naturally. */
   8
   9 /* Converted to single string by Rich Felker to remove the need for
  10  * data relocations at runtime, 27 Feb 2006. */
  11
  12 static const char messages[] = {
  13   "No error\0"
  14   "No match\0"
  15   "Invalid regexp\0"
  16   "Unknown collating element\0"
  17   "Unknown character class name\0"
  18   "Trailing backslash\0"
  19   "Invalid back reference\0"
  20   "Missing ']'\0"
  21   "Missing ')'\0"
  22   "Missing '}'\0"
  23   "Invalid contents of {}\0"
  24   "Invalid character range\0"
  25   "Out of memory\0"
  26   "Repetition not preceded by valid expression\0"
  27   "\0Unknown error"
  28 };
  29
  30 size_t regerror(int e, const regex_t *restrict preg, char *restrict buf, size_t size)
  31 {
  32         const char *s;
  33         for (s=messages; e && *s; e--, s+=strlen(s)+1);
  34         if (!*s) s++;
  35         s = LCTRANS_CUR(s);
  36         return 1+snprintf(buf, size, "%s", s);
  37 }