#include "userdiff.h"
#include "xdiff-interface.h"
-void append_header_grep_pattern(struct grep_opt *opt, enum grep_header_field field, const char *pat)
+static struct grep_pat *create_grep_pat(const char *pat, size_t patlen,
+ const char *origin, int no,
+ enum grep_pat_token t,
+ enum grep_header_field field)
{
struct grep_pat *p = xcalloc(1, sizeof(*p));
- p->pattern = pat;
- p->patternlen = strlen(pat);
- p->origin = "header";
- p->no = 0;
- p->token = GREP_PATTERN_HEAD;
+ p->pattern = xmemdupz(pat, patlen);
+ p->patternlen = patlen;
+ p->origin = origin;
+ p->no = no;
+ p->token = t;
p->field = field;
- *opt->header_tail = p;
- opt->header_tail = &p->next;
+ return p;
+}
+
+static void do_append_grep_pat(struct grep_pat ***tail, struct grep_pat *p)
+{
+ **tail = p;
+ *tail = &p->next;
p->next = NULL;
+
+ switch (p->token) {
+ case GREP_PATTERN: /* atom */
+ case GREP_PATTERN_HEAD:
+ case GREP_PATTERN_BODY:
+ for (;;) {
+ struct grep_pat *new_pat;
+ size_t len = 0;
+ char *cp = p->pattern + p->patternlen, *nl = NULL;
+ while (++len <= p->patternlen) {
+ if (*(--cp) == '\n') {
+ nl = cp;
+ break;
+ }
+ }
+ if (!nl)
+ break;
+ new_pat = create_grep_pat(nl + 1, len - 1, p->origin,
+ p->no, p->token, p->field);
+ new_pat->next = p->next;
+ if (!p->next)
+ *tail = &new_pat->next;
+ p->next = new_pat;
+ *nl = '\0';
+ p->patternlen -= len;
+ }
+ break;
+ default:
+ break;
+ }
+}
+
+void append_header_grep_pattern(struct grep_opt *opt,
+ enum grep_header_field field, const char *pat)
+{
+ struct grep_pat *p = create_grep_pat(pat, strlen(pat), "header", 0,
+ GREP_PATTERN_HEAD, field);
+ do_append_grep_pat(&opt->header_tail, p);
}
void append_grep_pattern(struct grep_opt *opt, const char *pat,
void append_grep_pat(struct grep_opt *opt, const char *pat, size_t patlen,
const char *origin, int no, enum grep_pat_token t)
{
- struct grep_pat *p = xcalloc(1, sizeof(*p));
- p->pattern = pat;
- p->patternlen = patlen;
- p->origin = origin;
- p->no = no;
- p->token = t;
- *opt->pattern_tail = p;
- opt->pattern_tail = &p->next;
- p->next = NULL;
+ struct grep_pat *p = create_grep_pat(pat, patlen, origin, no, t, 0);
+ do_append_grep_pat(&opt->pattern_tail, p);
}
struct grep_opt *grep_opt_dup(const struct grep_opt *opt)
free_pcre_regexp(p);
else
regfree(&p->regexp);
+ free(p->pattern);
break;
default:
break;