From 00ce50bf43b34ef9a66bc2ba0c64ba3d965ff6ea Mon Sep 17 00:00:00 2001
From: Mitchell Riedstra <mitch@riedstra.dev>
Date: Tue, 31 Jan 2023 08:52:01 -0500
Subject: Allow regexp matching for window title and class

---
 util.c | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

(limited to 'util.c')

diff --git a/util.c b/util.c
index 96b82c9..06685ad 100644
--- a/util.c
+++ b/util.c
@@ -3,6 +3,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <regex.h>
 
 #include "util.h"
 
@@ -34,3 +35,32 @@ ecalloc(size_t nmemb, size_t size)
 		die("calloc:");
 	return p;
 }
+
+int
+reMatch(const char *regex, const char *str) {
+    char reErr[1024] = {0};
+    regex_t *re = calloc(1, sizeof(regex_t));
+    int rc = 0;
+
+    if (!re)
+        return -1;
+
+    rc = regcomp(re, regex, REG_EXTENDED|REG_ICASE|REG_NOSUB);
+    if (rc != 0) {
+        regerror(rc, re, reErr, 1024);
+		regfree(re); re = NULL;
+        fprintf(stderr, "Regex compile err: %s %s\n", regex, reErr);
+        return -1;
+    }
+
+    rc = regexec(re, str, 0, NULL, 0);
+    regfree(re); re = NULL;
+    if (rc != 0) {
+        regerror(rc, re, reErr, 1024);
+        fprintf(stderr, "Regex match error: %s -> %s : %s\n",
+                regex, str, reErr);
+        return -1;
+    }
+
+    return rc;
+}
-- 
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