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b2/subst.c: use vstring for modified regexp

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This commit is contained in:
Werner Almesberger 2012-05-20 20:57:18 -03:00
parent 4e39ca2e31
commit 9681d44ca4
1 changed files with 15 additions and 7 deletions
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22
b2/subst.c
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@ -19,6 +19,7 @@
#include <assert.h> #include <assert.h>
#include "util.h" #include "util.h"
#include "vstring.h"
#include "lang.h" #include "lang.h"
#include "subst.h" #include "subst.h"
@ -37,21 +38,28 @@ static struct subst *alloc_subst(enum subst_type type)
} }
static char *prepare_re(const char *re)
{
char *res = NULL;
int res_len = 0;
append_char(&res, &res_len, '^');
append(&res, &res_len, re);
append_char(&res, &res_len, '$');
return res;
}
struct subst *subst_match(const char *src, const char *re) struct subst *subst_match(const char *src, const char *re)
{ {
char error[1000]; char error[1000];
struct subst *sub; struct subst *sub;
char *tmp; char *tmp;
int err, len; int err;
sub = alloc_subst(st_match); sub = alloc_subst(st_match);
sub->u.match.src = src; sub->u.match.src = src;
len = strlen(re); tmp = prepare_re(re);
tmp = alloc_size(len+3);
tmp[0] = '^';
memcpy(tmp+1, re, len);
tmp[len+1] = '$';
tmp[len+2] = 0;
err = regcomp(&sub->u.match.re, tmp, REG_EXTENDED); err = regcomp(&sub->u.match.re, tmp, REG_EXTENDED);
free(tmp); free(tmp);
if (err) { if (err) {