add set_nomatch_chars

dtool/src/prc/globPattern.I

@@ -125,6 +125,28 @@ get_case_sensitive() const {
   return _case_sensitive;
 }
 
+////////////////////////////////////////////////////////////////////
+//     Function: GlobPattern::set_nomatch_chars
+//       Access: Public
+//  Description: Specifies a set of characters that are not matched by
+//               * or ?.
+////////////////////////////////////////////////////////////////////
+INLINE void GlobPattern::
+set_nomatch_chars(const string &nomatch_chars) {
+  _nomatch_chars = nomatch_chars;
+}
+
+////////////////////////////////////////////////////////////////////
+//     Function: GlobPattern::get_nomatch_chars
+//       Access: Public
+//  Description: Returns the set of characters that are not matched by
+//               * or ?.
+////////////////////////////////////////////////////////////////////
+INLINE const string &GlobPattern::
+get_nomatch_chars() const {
+  return _nomatch_chars;
+}
+
 ////////////////////////////////////////////////////////////////////
 //     Function: GlobPattern::matches
 //       Access: Public

dtool/src/prc/globPattern.cxx

@@ -227,9 +227,15 @@ matches_substr(string::const_iterator pi, string::const_iterator pend,
     // to recurse twice: either consume one character of the candidate
     // string and continue to try matching the *, or stop trying to
     // match the * here.
-    return
-      matches_substr(pi, pend, ci + 1, cend) ||
-      matches_substr(pi + 1, pend, ci, cend);
+    if (_nomatch_chars.find(*ci) == string::npos) {
+      return
+        matches_substr(pi, pend, ci + 1, cend) ||
+        matches_substr(pi + 1, pend, ci, cend);
+    } else {
+      // On the other hand, if this is one of the nomatch chars, we
+      // can only stop here.
+      return matches_substr(pi + 1, pend, ci, cend);
+    }
 
   case '?':
     // A '?' in the pattern string means to match exactly one

dtool/src/prc/globPattern.h

@@ -50,6 +50,9 @@ PUBLISHED:
   INLINE void set_case_sensitive(bool case_sensitive);
   INLINE bool get_case_sensitive() const;
 
+  INLINE void set_nomatch_chars(const string &nomatch_chars);
+  INLINE const string &get_nomatch_chars() const;
+
   INLINE bool matches(const string &candidate) const;
 
   INLINE void output(ostream &out) const;
@@ -73,6 +76,7 @@ private:
 
   string _pattern;
   bool _case_sensitive;
+  string _nomatch_chars;
 };
 
 INLINE ostream &operator << (ostream &out, const GlobPattern &glob) {