From 008ebd1262268cf1c9a4bbdc0bf78d5c11cd5b1d Mon Sep 17 00:00:00 2001
From: Joseph Hunkeler <jhunkeler@gmail.com>
Date: Thu, 6 May 2021 17:21:47 -0400
Subject: Disable regex on windows

---
 include/cleanpath.h | 3 +++
 lib/cleanpath.c     | 5 +++++
 src/main.c          | 2 +-
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/include/cleanpath.h b/include/cleanpath.h
index 6d50db4..b2d21f4 100644
--- a/include/cleanpath.h
+++ b/include/cleanpath.h
@@ -35,10 +35,13 @@
 #define CLEANPATH_PART_MAX 1024
 #define CLEANPATH_VAR "PATH"
 #define CLEANPATH_SEP ":"
+#define CLEANPATH_MSG_NOAVAIL ""
 
 #if OS_WINDOWS
 #undef CLEANPATH_SEP
 #define CLEANPATH_SEP ";"
+#undef CLEANPATH_MSG_NOAVAIL
+#define CLEANPATH_MSG_NOAVAIL " [not implemented] "
 #endif
 
 struct CleanPath {
diff --git a/lib/cleanpath.c b/lib/cleanpath.c
index c64da40..d1c9637 100644
--- a/lib/cleanpath.c
+++ b/lib/cleanpath.c
@@ -1,3 +1,4 @@
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include "config.h"
@@ -71,11 +72,15 @@ void cleanpath_filter(struct CleanPath *path, unsigned mode, const char *pattern
                 match = strstr(path->part[i], pattern) != NULL ? 1 : 0;
                 break;
             case CLEANPATH_FILTER_REGEX:
+#if !OS_WINDOWS
                 if (regcomp(&regex, pattern, REG_EXTENDED | REG_NOSUB) != 0) {
                     return;
                 }
                 match = regexec(&regex, path->part[i], 0, NULL, 0) == 0 ? 1 : 0;
                 regfree(&regex);
+#else
+                fprintf(stderr, "WARNING: --regex|-r is not implemented on Windows. Using default filter mode.\n")
+#endif
                 break;
             case CLEANPATH_FILTER_EXACT:
             default:
diff --git a/src/main.c b/src/main.c
index ba23fcc..7bb92c3 100644
--- a/src/main.c
+++ b/src/main.c
@@ -52,7 +52,7 @@ static void show_usage() {
     printf("  --version    -V    Displays the program's version\n");
     printf("  --exact      -e    Filter when pattern is an exact match (default)\n");
     printf("  --loose      -l    Filter when any part of the pattern matches\n");
-    printf("  --regex      -r    Filter matches with (Extended) Regular Expressions\n");
+    printf("  --regex      -r    Filter matches with (Extended) Regular Expressions " CLEANPATH_MSG_NOAVAIL "\n");
     printf("  --sep [str]  -s    Use custom path separator (default: ':')\n");
     printf("  --env [str]  -E    Use custom environment variable (default: PATH)\n");
 }
-- 
cgit