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#include "cache.h"
#include "quote.h"
/* Help to copy the thing properly quoted for the shell safety.
* any single quote is replaced with '\'', and the caller is
* expected to enclose the result within a single quote pair.
*
* E.g.
* original sq_quote result
* name ==> name ==> 'name'
* a b ==> a b ==> 'a b'
* a'b ==> a'\''b ==> 'a'\''b'
*/
char *sq_quote(const char *src)
{
static char *buf = NULL;
int cnt, c;
const char *cp;
char *bp;
/* count bytes needed to store the quoted string. */
for (cnt = 3, cp = src; *cp; cnt++, cp++)
if (*cp == '\'')
cnt += 3;
buf = xmalloc(cnt);
bp = buf;
*bp++ = '\'';
while ((c = *src++)) {
if (c != '\'')
*bp++ = c;
else {
bp = strcpy(bp, "'\\''");
bp += 4;
}
}
*bp++ = '\'';
*bp = 0;
return buf;
}
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