Initial revision

git-svn-id: file:///fltk/svn/fltk/trunk@2 ea41ed52-d2ee-0310-a9c1-e6b18d33e121

1 files changed, 74 insertions, 0 deletions

diff --git a/src/filename_match.cxx b/src/filename_match.cxx
new file mode 100644
index 000000000..ba8ad4aad
--- /dev/null
+++ b/src/filename_match.cxx
@@ -0,0 +1,74 @@
+/*------------------- Pattern matching --------------------------*/
+/* Adapted from Rich Salz. */
+#include <FL/filename.H>
+
+int filename_match(const char *s, const char *p) {
+  int matched;
+
+  for (;;) {
+    switch(*p++) {
+
+    case '?' :	// match any single character
+      if (!*s++) return 0;
+      break;
+
+    case '*' :	// match 0-n of any characters
+      if (!*p) return 1; // do trailing * quickly
+      while (!filename_match(s, p)) if (!*s++) return 0;
+      return 1;
+
+    case '[': {	// match one character in set of form [abc-d] or [^a-b]
+      if (!*s) return 0;
+      int reverse = (*p=='^' || *p=='!'); if (reverse) p++;
+      matched = 0;
+      char last = 0;
+      while (*p) {
+	if (*p=='-' && last) {
+	  if (*s <= *++p && *s >= last ) matched = 1;
+	  last = 0;
+	} else {
+	  if (*s == *p) matched = 1;
+	}
+	last = *p++;
+	if (*p==']') break;
+      }
+      if (matched == reverse) return 0;
+      s++; p++;}
+    break;
+
+    case '{' : // {pattern1|pattern2|pattern3}
+    NEXTCASE:
+    if (filename_match(s,p)) return 1;
+    for (matched = 0;;) {
+      switch (*p++) {
+      case '\\': if (*p) p++; break;
+      case '{': matched++; break;
+      case '}': if (!matched--) return 0; break;
+      case '|': case ',': if (matched==0) goto NEXTCASE;
+      case 0: return 0;
+      }
+    }
+    case '|':	// skip rest of |pattern|pattern} when called recursively
+    case ',':
+      for (matched = 0; *p && matched >= 0;) {
+	switch (*p++) {
+	case '\\': if (*p) p++; break;
+	case '{': matched++; break;
+	case '}': matched--; break;
+	}
+      }
+      break;
+    case '}':
+      break;
+
+    case 0:	// end of pattern
+      return !*s;
+
+    case '\\':	// quote next character
+      if (*p) p++;
+    default  :	// other characters
+      if (*s++ != *(p-1)) return 0;
+      break;
+    }
+  }
+}