[src/trunk]: src/external/bsd/tre/dist/lib implement the REG_STARTEND extensi...

[agc <agc%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/74172740796b
branches:  trunk
changeset: 754171:74172740796b
user:      agc <agc%NetBSD.org@localhost>
date:      Thu Apr 22 17:33:54 2010 +0000

description:
implement the REG_STARTEND extension using tre_regnexec - REG_STARTEND is
used by mail(1), and file(1), to name but two.

diffstat:

 external/bsd/tre/dist/lib/regexec.c |  15 ++++++++++++++-
 1 files changed, 14 insertions(+), 1 deletions(-)

diffs (25 lines):

diff -r 4ac6960e2fda -r 74172740796b external/bsd/tre/dist/lib/regexec.c
--- a/external/bsd/tre/dist/lib/regexec.c       Thu Apr 22 17:32:37 2010 +0000
+++ b/external/bsd/tre/dist/lib/regexec.c       Thu Apr 22 17:33:54 2010 +0000
@@ -213,7 +213,20 @@
 tre_regexec(const regex_t *preg, const char *str,
        size_t nmatch, regmatch_t pmatch[], int eflags)
 {
-  return tre_regnexec(preg, str, (unsigned)-1, nmatch, pmatch, eflags);
+       const char      *newstr;
+       unsigned         newflags;
+       size_t           newlen;
+
+       if (eflags & REG_STARTEND) {
+               newstr = &str[pmatch[0].rm_so];
+               newlen = pmatch[0].rm_eo;
+               newflags = (unsigned)(eflags & ~REG_STARTEND);
+       } else {
+               newstr = str;
+               newlen = (size_t)-1;
+               newflags = (unsigned)eflags;
+       }
+       return tre_regnexec(preg, newstr, newlen, nmatch, pmatch, (int)newflags);
 }