Re: [libvirt] [PATCH 1/2] util: introduce virStringMatch

Simply tries to match the provided regex on a string and returns the result. Useful if caller don't care about the matched substring and want to just test if some pattern patches a string. Signed-off-by: Pavel Hrdina <phrdina(a)redhat.com&gt; --- src/libvirt_private.syms | 1 + src/util/virstring.c | 34 ++++++++++++++++++++++++++++++++++ src/util/virstring.h | 3 +++ tests/virstringtest.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 85 insertions(+) diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index afb9100c50..d32c6e7549 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -2621,6 +2621,7 @@ virStringListHasString; virStringListJoin; virStringListLength; virStringListRemove; +virStringMatch; virStringReplace; virStringSearch; virStringSortCompare; diff --git a/src/util/virstring.c b/src/util/virstring.c index 335e773d78..b95a8926bd 100644 --- a/src/util/virstring.c +++ b/src/util/virstring.c @@ -979,6 +979,40 @@ virStringSearch(const char *str, } /** + * virStringMatch: + * @str: string to match + * @regexp: POSIX Extended regular expression pattern used for matching + * + * Performs a POSIX extended regex search against a string. + * Returns 0 on match, -1 on error, 1 on no match. + */ +int +virStringMatch(const char *str, + const char *regexp) +{ + regex_t re; + int ret = -1; + int rv; + + VIR_DEBUG("match '%s' for '%s'", str, regexp); + + if ((rv = regcomp(&re, regexp, REG_EXTENDED | REG_NOSUB)) != 0) { + char error[100]; + regerror(rv, &re, error, sizeof(error)); + virReportError(VIR_ERR_INTERNAL_ERROR, + _("error while compiling regular expression '%s': %s"), + regexp, error); + return -1; + } + + if ((ret = regexec(&re, str, 0, NULL, 0)) != 0) + ret = 1;