1 files changed, 67 insertions, 0 deletions
diff --git a/src/mongo/util/stringutils.h b/src/mongo/util/stringutils.h
new file mode 100644
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+++ b/src/mongo/util/stringutils.h
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+// stringutils.h
+
+/*    Copyright 2010 10gen Inc.
+ *
+ *    Licensed under the Apache License, Version 2.0 (the "License");
+ *    you may not use this file except in compliance with the License.
+ *    You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing, software
+ *    distributed under the License is distributed on an "AS IS" BASIS,
+ *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *    See the License for the specific language governing permissions and
+ *    limitations under the License.
+ */
+
+#pragma once
+
+#include <string>
+#include <vector>
+
+#include <boost/scoped_array.hpp>
+
+namespace mongo {
+
+    // see also mongoutils/str.h - perhaps move these there?
+    // see also text.h
+
+    void splitStringDelim( const string& str , std::vector<std::string>* res , char delim );
+
+    void joinStringDelim( const std::vector<std::string>& strs , std::string* res , char delim );
+
+    inline std::string tolowerString( const std::string& input ) {
+        std::string::size_type sz = input.size();
+
+        boost::scoped_array<char> line(new char[sz+1]);
+        char * copy = line.get();
+
+        for ( std::string::size_type i=0; i<sz; i++ ) {
+            char c = input[i];
+            copy[i] = (char)tolower( (int)c );
+        }
+        copy[sz] = 0;
+        return copy;
+    }
+
+    /** Functor for combining lexical and numeric comparisons. */
+    class LexNumCmp {
+    public:
+        /** @param lexOnly - compare all characters lexically, including digits. */
+        LexNumCmp( bool lexOnly );
+        /**
+         * Non numeric characters are compared lexicographically; numeric substrings
+         * are compared numerically; dots separate ordered comparable subunits.
+         * For convenience, character 255 is greater than anything else.
+         * @param lexOnly - compare all characters lexically, including digits.
+         */
+        static int cmp( const char *s1, const char *s2, bool lexOnly );
+        int cmp( const char *s1, const char *s2 ) const;
+        bool operator()( const char *s1, const char *s2 ) const;
+        bool operator()( const std::string &s1, const std::string &s2 ) const;
+    private:
+        bool _lexOnly;
+    };
+    
+} // namespace mongo