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grep: free expressions and patterns when done.

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Signed-off-by: Junio C Hamano <junkio@cox.net>
This commit is contained in:
Junio C Hamano
2006-09-27 16:27:10 -07:00
parent 209e756931
commit b48fb5b6a9
3 changed files with 45 additions and 0 deletions
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42
grep.c
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@ -167,6 +167,46 @@ void compile_grep_patterns(struct grep_opt *opt)
die("incomplete pattern expression: %s", p->pattern);
}
static void free_pattern_expr(struct grep_expr *x)
{
switch (x->node) {
case GREP_NODE_ATOM:
break;
case GREP_NODE_NOT:
free_pattern_expr(x->u.unary);
break;
case GREP_NODE_AND:
case GREP_NODE_OR:
free_pattern_expr(x->u.binary.left);
free_pattern_expr(x->u.binary.right);
break;
}
free(x);
}
void free_grep_patterns(struct grep_opt *opt)
{
struct grep_pat *p, *n;
for (p = opt->pattern_list; p; p = n) {
n = p->next;
switch (p->token) {
case GREP_PATTERN: /* atom */
case GREP_PATTERN_HEAD:
case GREP_PATTERN_BODY:
regfree(&p->regexp);
break;
default:
break;
}
free(p);
}
if (!opt->extended)
return;
free_pattern_expr(opt->pattern_expression);
}
static char *end_of_line(char *cp, unsigned long *left)
{
unsigned long l = *left;
@ -439,6 +479,8 @@ int grep_buffer(struct grep_opt *opt, const char *name, char *buf, unsigned long
lno++;
}
free(prev);
if (opt->status_only)
return 0;
if (opt->unmatch_name_only) {