Added explicit string equals/hash functors to a new header common/hash-str.h; removed Hash functor specialization for String and char pointers; changed all code using hashmaps with string keys to explicitly specify whether they honor or ignore case

svn-id: r23634

1 files changed, 79 insertions, 0 deletions

diff --git a/common/hash-str.h b/common/hash-str.h
new file mode 100644
index 0000000000..bb61e3091d
--- /dev/null
+++ b/common/hash-str.h
@@ -0,0 +1,79 @@
+/* ScummVM - Scumm Interpreter
+ * Copyright (C) 2002-2006 The ScummVM project
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ */
+
+#ifndef COMMON_HASH_STR_H
+#define COMMON_HASH_STR_H
+
+#include "common/hashmap.h"
+#include "common/str.h"
+
+namespace Common {
+
+uint hashit(const char *str);
+uint hashit_lower(const char *str);	// Generate a hash based on the lowercase version of the string
+
+
+// FIXME: The following functors obviously are not consistently named
+
+struct CaseSensitiveString_EqualTo {
+	bool operator()(const String& x, const String& y) const { return strcmp(x.c_str(), y.c_str()) == 0; }
+};
+
+struct CaseSensitiveString_Hash {
+	uint operator()(const String& x) const { return hashit(x.c_str()); }
+};
+
+
+struct IgnoreCase_EqualTo {
+	bool operator()(const String& x, const String& y) const { return scumm_stricmp(x.c_str(), y.c_str()) == 0; }
+};
+
+struct IgnoreCase_Hash {
+	uint operator()(const String& x) const { return hashit_lower(x.c_str()); }
+};
+
+
+
+typedef HashMap<String, String, IgnoreCase_Hash, IgnoreCase_EqualTo> StringMap;
+
+
+#if 0
+// Specalization of the Hash functor for String objects.
+template <>
+struct Hash<String> {
+	uint operator()(const String& s) const {
+		return hashit(s.c_str());
+	}
+};
+
+template <>
+struct Hash<const char *> {
+	uint operator()(const char *s) const {
+		return hashit(s);
+	}
+};
+#endif
+
+
+}	// End of namespace Common
+
+
+#endif