X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=src%2Fregex.c;h=9549a98b54ba36980fe956b8957e63d4e21f1c6b;hb=884214f14fdbd0a4a368d2a36d5e50324fa1d52a;hp=da8f91d8a67fbd4f09e35fc0a512598d0c0ccd11;hpb=717ae819c55d2aca9f4bf2e1198e035ca64114ac;p=i3%2Fi3

diff --git a/src/regex.c b/src/regex.c
index da8f91d8..9549a98b 100644
--- a/src/regex.c
+++ b/src/regex.c
@@ -1,12 +1,14 @@
+#undef I3__FILE__
+#define I3__FILE__ "regex.c"
 /*
  * vim:ts=4:sw=4:expandtab
  *
  * i3 - an improved dynamic tiling window manager
- * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
+ * © 2009 Michael Stapelberg and contributors (see also: LICENSE)
  *
+ * regex.c: Interface to libPCRE (perl compatible regular expressions).
  *
  */
-
 #include "all.h"
 
 /*
@@ -25,9 +27,12 @@ struct regex *regex_new(const char *pattern) {
 
     struct regex *re = scalloc(sizeof(struct regex));
     re->pattern = sstrdup(pattern);
+    int options = PCRE_UTF8;
+#ifdef PCRE_HAS_UCP
     /* We use PCRE_UCP so that \B, \b, \D, \d, \S, \s, \W, \w and some POSIX
      * character classes play nicely with Unicode */
-    int options = PCRE_UCP | PCRE_UTF8;
+    options |= PCRE_UCP;
+#endif
     while (!(re->regex = pcre_compile2(pattern, options, &errorcode, &error, &offset, NULL))) {
         /* If the error is that PCRE was not compiled with UTF-8 support we
          * disable it and try again */
@@ -49,10 +54,22 @@ struct regex *regex_new(const char *pattern) {
     return re;
 }
 
+/*
+ * Frees the given regular expression. It must not be used afterwards!
+ *
+ */
+void regex_free(struct regex *regex) {
+    if (!regex)
+        return;
+    FREE(regex->pattern);
+    FREE(regex->regex);
+    FREE(regex->extra);
+}
+
 /*
  * Checks if the given regular expression matches the given input and returns
  * true if it does. In either case, it logs the outcome using LOG(), so it will
- * be visible without any debug loglevel.
+ * be visible without debug logging.
  *
  */
 bool regex_matches(struct regex *regex, const char *input) {