pd.if.org Git - zpackage/blob - lib/quote.c

   1 #include <stddef.h>
   2 #include <stdio.h>
   3
   4 #include "sqlite3.h"
   5
   6 int zpm_quote(char *value, char *dest, size_t n) {
   7         size_t dlen = 0;
   8         int nch = 0;
   9         char *s;
  10
  11         /* figure out length of quoted string */
  12         for (s = value; *s; s++) {
  13                 dlen++;
  14                 if (*s == '\'') dlen++;
  15         }
  16
  17         /* if there's enough room for the string and the terminating null
  18          * byte, quote the string
  19          */
  20         if (dest && dlen < n) {
  21                 while (*value) {
  22                         if (*value == '\'') {
  23                                 *dest++ = '\'';
  24                                 nch++;
  25                         }
  26                         *dest++ = *value++;
  27                         nch++;
  28                 }
  29                 dest[nch] = 0;
  30         }
  31
  32
  33         /* returns either the number of characters written or would
  34          * be written
  35          */
  36         return dlen;
  37 }