Andrew's git - gitweb.git/blob

   1#include "cache.h"
   2#include "quote.h"
   3
   4/* Help to copy the thing properly quoted for the shell safety.
   5 * any single quote is replaced with '\'', and the caller is
   6 * expected to enclose the result within a single quote pair.
   7 *
   8 * E.g.
   9 *  original     sq_quote     result
  10 *  name     ==> name      ==> 'name'
  11 *  a b      ==> a b       ==> 'a b'
  12 *  a'b      ==> a'\''b    ==> 'a'\''b'
  13 */
  14char *sq_quote(const char *src)
  15{
  16        static char *buf = NULL;
  17        int cnt, c;
  18        const char *cp;
  19        char *bp;
  20
  21        /* count bytes needed to store the quoted string. */
  22        for (cnt = 3, cp = src; *cp; cnt++, cp++)
  23                if (*cp == '\'')
  24                        cnt += 3;
  25
  26        buf = xmalloc(cnt);
  27        bp = buf;
  28        *bp++ = '\'';
  29        while ((c = *src++)) {
  30                if (c != '\'')
  31                        *bp++ = c;
  32                else {
  33                        bp = strcpy(bp, "'\\''");
  34                        bp += 4;
  35                }
  36        }
  37        *bp++ = '\'';
  38        *bp = 0;
  39        return buf;
  40}
  41