1 files changed, 148 insertions, 0 deletions
diff --git a/src/mongo/util/text.h b/src/mongo/util/text.h
new file mode 100644
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+++ b/src/mongo/util/text.h
@@ -0,0 +1,148 @@
+// text.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.
+ */
+
+/*    Copyright 2009 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
+
+namespace mongo {
+
+    class StringSplitter {
+    public:
+        /** @param big the string to be split
+            @param splitter the delimiter
+        */
+        StringSplitter( const char * big , const char * splitter )
+            : _big( big ) , _splitter( splitter ) {
+        }
+
+        /** @return true if more to be taken via next() */
+        bool more() {
+            return _big[0] != 0;
+        }
+
+        /** get next split string fragment */
+        string next() {
+            const char * foo = strstr( _big , _splitter );
+            if ( foo ) {
+                string s( _big , foo - _big );
+                _big = foo + 1;
+                while ( *_big && strstr( _big , _splitter ) == _big )
+                    _big++;
+                return s;
+            }
+
+            string s = _big;
+            _big += strlen( _big );
+            return s;
+        }
+
+        void split( vector<string>& l ) {
+            while ( more() ) {
+                l.push_back( next() );
+            }
+        }
+
+        vector<string> split() {
+            vector<string> l;
+            split( l );
+            return l;
+        }
+
+        static vector<string> split( const string& big , const string& splitter ) {
+            StringSplitter ss( big.c_str() , splitter.c_str() );
+            return ss.split();
+        }
+
+        static string join( vector<string>& l , const string& split ) {
+            stringstream ss;
+            for ( unsigned i=0; i<l.size(); i++ ) {
+                if ( i > 0 )
+                    ss << split;
+                ss << l[i];
+            }
+            return ss.str();
+        }
+
+    private:
+        const char * _big;
+        const char * _splitter;
+    };
+
+    /* This doesn't defend against ALL bad UTF8, but it will guarantee that the
+     * string can be converted to sequence of codepoints. However, it doesn't
+     * guarantee that the codepoints are valid.
+     */
+    bool isValidUTF8(const char *s);
+    inline bool isValidUTF8(string s) { return isValidUTF8(s.c_str()); }
+
+#if defined(_WIN32)
+
+    std::string toUtf8String(const std::wstring& wide);
+
+    std::wstring toWideString(const char *s);
+
+    /* like toWideString but UNICODE macro sensitive */
+# if !defined(_UNICODE)
+#error temp error 
+    inline std::string toNativeString(const char *s) { return s; }
+# else
+    inline std::wstring toNativeString(const char *s) { return toWideString(s); }
+# endif
+
+#endif
+
+    // expect that n contains a base ten number and nothing else after it
+    // NOTE win version hasn't been tested directly
+    inline long long parseLL( const char *n ) {
+        long long ret;
+        uassert( 13307, "cannot convert empty string to long long", *n != 0 );
+#if !defined(_WIN32)
+        char *endPtr = 0;
+        errno = 0;
+        ret = strtoll( n, &endPtr, 10 );
+        uassert( 13305, "could not convert string to long long", *endPtr == 0 && errno == 0 );
+#elif _MSC_VER>=1600    // 1600 is VS2k10 1500 is VS2k8
+        size_t endLen = 0;
+        try {
+            ret = stoll( n, &endLen, 10 );
+        }
+        catch ( ... ) {
+            endLen = 0;
+        }
+        uassert( 13306, "could not convert string to long long", endLen != 0 && n[ endLen ] == 0 );
+#else // stoll() wasn't introduced until VS 2010.
+        char* endPtr = 0;
+        ret = _strtoi64( n, &endPtr, 10 );
+        uassert( 13310, "could not convert string to long long", (*endPtr == 0) && (ret != _I64_MAX) && (ret != _I64_MIN) );
+#endif // !defined(_WIN32)
+        return ret;
+    }
+}