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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 <ctype.h>
#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 std::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( StringData 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 StringData& s1, const StringData& s2, bool lexOnly );
int cmp( const StringData& s1, const StringData& s2 ) const;
bool operator()( const StringData& s1, const StringData& s2 ) const;
private:
bool _lexOnly;
};
// TODO: Sane-ify core string functionality
// For now, this needs to be near the LexNumCmp or else
int versionCmp(const StringData rhs, const StringData lhs);
} // namespace mongo
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