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-rw-r--r--src/ArchiveLookup.cxx21
1 files changed, 13 insertions, 8 deletions
diff --git a/src/ArchiveLookup.cxx b/src/ArchiveLookup.cxx
index 7cea655fd..ea7449486 100644
--- a/src/ArchiveLookup.cxx
+++ b/src/ArchiveLookup.cxx
@@ -29,6 +29,18 @@
#include <unistd.h>
#include <errno.h>
+gcc_pure
+static const char *
+FindSuffix(const char *p, size_t i)
+{
+ for (; i > 0; --i) {
+ if (p[i] == '.')
+ return p + i + 1;
+ }
+
+ return nullptr;
+}
+
bool
archive_lookup(char *pathname, const char **archive,
const char **inpath, const char **suffix)
@@ -67,14 +79,7 @@ archive_lookup(char *pathname, const char **archive,
*inpath = pathname + idx+1;
//try to get suffix
- *suffix = NULL;
- while (idx > 0) {
- if (pathname[idx] == '.') {
- *suffix = pathname + idx + 1;
- break;
- }
- idx--;
- }
+ *suffix = FindSuffix(pathname, idx);
break;
} else {
FormatError(archive_domain,