text.h

// 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.
 */
 
#pragma once
 
#include <vector>
#include <string>
 
#include "mongo/base/disallow_copying.h"
 
namespace mongo {
 
class StringSplitter {
public:
    StringSplitter(const char* big, const char* splitter) : _big(big), _splitter(splitter) {}
 
    bool more() const {
        return _big[0] != 0;
    }
 
    std::string next();
 
    void split(std::vector<std::string>& l);
 
    std::vector<std::string> split();
 
    static std::vector<std::string> split(const std::string& big, const std::string& splitter);
 
    static std::string join(const std::vector<std::string>& l, const std::string& split);
 
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);
bool isValidUTF8(const std::string& s);
 
// expect that n contains a base ten number and nothing else after it
// NOTE win version hasn't been tested directly
long long parseLL(const char* n);
 
#if defined(_WIN32)
 
std::string toUtf8String(const std::wstring& wide);
 
std::wstring toWideString(const char* s);
 
bool writeUtf8ToWindowsConsole(const char* utf8String, unsigned int utf8StringSize);
 
/* 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
 
class WindowsCommandLine {
    MONGO_DISALLOW_COPYING(WindowsCommandLine);
    char** _argv;
    char** _envp;
 
public:
    WindowsCommandLine(int argc, wchar_t* argvW[], wchar_t* envpW[]);
    ~WindowsCommandLine();
    char** argv(void) const {
        return _argv;
    };
    char** envp(void) const {
        return _envp;
    };
};
 
#endif  // #if defined(_WIN32)
 
std::string constructUtf8WindowsCommandLine(const std::vector<std::string>& argv);
 
}  // namespace mongo