static int callout(pcre_callout_block *cb)
{
FILE *f = (first_callout | callout_extra)? outfile : NULL;
-int i, pre_start, post_start, subject_length;
+int i, current_position, pre_start, post_start, subject_length;
if (callout_extra)
{
fprintf(f, "Callout %d: last capture = %d\n",
cb->callout_number, cb->capture_last);
- for (i = 0; i < cb->capture_top * 2; i += 2)
+ if (cb->offset_vector != NULL)
{
- if (cb->offset_vector[i] < 0)
- fprintf(f, "%2d: <unset>\n", i/2);
- else
+ for (i = 0; i < cb->capture_top * 2; i += 2)
{
- fprintf(f, "%2d: ", i/2);
- PCHARSV(cb->subject, cb->offset_vector[i],
- cb->offset_vector[i+1] - cb->offset_vector[i], f);
- fprintf(f, "\n");
+ if (cb->offset_vector[i] < 0)
+ fprintf(f, "%2d: <unset>\n", i/2);
+ else
+ {
+ fprintf(f, "%2d: ", i/2);
+ PCHARSV(cb->subject, cb->offset_vector[i],
+ cb->offset_vector[i+1] - cb->offset_vector[i], f);
+ fprintf(f, "\n");
+ }
}
}
}
if (f != NULL) fprintf(f, "--->");
+/* If a lookbehind is involved, the current position may be earlier than the
+match start. If so, use the match start instead. */
+
+current_position = (cb->current_position >= cb->start_match)?
+ cb->current_position : cb->start_match;
+
PCHARS(pre_start, cb->subject, 0, cb->start_match, f);
PCHARS(post_start, cb->subject, cb->start_match,
- cb->current_position - cb->start_match, f);
+ current_position - cb->start_match, f);
PCHARS(subject_length, cb->subject, 0, cb->subject_length, NULL);
-PCHARSV(cb->subject, cb->current_position,
- cb->subject_length - cb->current_position, f);
+PCHARSV(cb->subject, current_position, cb->subject_length - current_position, f);
if (f != NULL) fprintf(f, "\n");
re->name_count = swap_uint16(re->name_count);
re->ref_count = swap_uint16(re->ref_count);
-if (extra != NULL)
+if (extra != NULL && (extra->flags & PCRE_EXTRA_STUDY_DATA) != 0)
{
pcre_study_data *rsd = (pcre_study_data *)(extra->study_data);
rsd->size = swap_uint32(rsd->size);
re->name_count = swap_uint16(re->name_count);
re->ref_count = swap_uint16(re->ref_count);
-if (extra != NULL)
+if (extra != NULL && (extra->flags & PCRE_EXTRA_STUDY_DATA) != 0)
{
pcre_study_data *rsd = (pcre_study_data *)(extra->study_data);
rsd->size = swap_uint32(rsd->size);
pcre_extra *extra = NULL;
#if !defined NOPOSIX /* There are still compilers that require no indent */
- regex_t preg;
+ regex_t preg = { NULL, 0, 0} ;
int do_posix = 0;
#endif
else switch ((c = *p++))
{
- case 'a': c = 7; break;
+ case 'a': c = CHAR_BEL; break;
case 'b': c = '\b'; break;
- case 'e': c = 27; break;
+ case 'e': c = CHAR_ESC; break;
case 'f': c = '\f'; break;
case 'n': c = '\n'; break;
case 'r': c = '\r'; break;
if (!do_g && !do_G) break;
+ if (use_offsets == NULL)
+ {
+ fprintf(outfile, "Cannot do global matching without an ovector\n");
+ break;
+ }
+
+ if (use_size_offsets < 2)
+ {
+ fprintf(outfile, "Cannot do global matching with an ovector size < 2\n");
+ break;
+ }
+
/* If we have matched an empty string, first check to see if we are at
the end of the subject. If so, the /g loop is over. Otherwise, mimic what
Perl's /g options does. This turns out to be rather cunning. First we set
g_notempty = PCRE_NOTEMPTY_ATSTART | PCRE_ANCHORED;
}
- /* For /g, update the start offset, leaving the rest alone */
-
- if (do_g) start_offset = use_offsets[1];
+ /* For /g, update the start offset, leaving the rest alone. There is a
+ tricky case when \K is used in a positive lookbehind assertion. This can
+ cause the end of the match to be less than or equal to the start offset.
+ In this case we restart at one past the start offset. This may return the
+ same match if the original start offset was bumped along during the
+ match, but eventually the new start offset will hit the actual start
+ offset. (In PCRE2 the true start offset is available, and this can be
+ done better. It is not worth doing more than making sure we do not loop
+ at this stage in the life of PCRE1.) */
+
+ if (do_g)
+ {
+ if (g_notempty == 0 && use_offsets[1] <= start_offset)
+ {
+ if (start_offset >= len) break; /* End of subject */
+ start_offset++;
+ if (use_utf)
+ {
+ while (start_offset < len)
+ {
+ if ((bptr[start_offset] & 0xc0) != 0x80) break;
+ start_offset++;
+ }
+ }
+ }
+ else start_offset = use_offsets[1];
+ }
/* For /G, update the pointer and length */
CONTINUE:
#if !defined NOPOSIX
- if (posix || do_posix) regfree(&preg);
+ if ((posix || do_posix) && preg.re_pcre != 0) regfree(&preg);
#endif
if (re != NULL) new_free(re);
}
/* End of pcretest.c */
+