extreme refactoring

[chaz/yoink] / src / Moof / StringTools.cc

diff --git a/src/Moof/StringTools.cc b/src/Moof/StringTools.cc
new file mode 100644 (file)
index 0000000..f4bd967
--- /dev/null
+++ b/src/Moof/StringTools.cc
@@ -0,0 +1,159 @@
+
+/*******************************************************************************
+
+ Copyright (c) 2009, Charles McGarvey
+ All rights reserved.
+ 
+ Redistribution   and   use  in  source  and  binary  forms,  with  or  without
+ modification, are permitted provided that the following conditions are met:
+ 
+   * Redistributions  of  source  code  must retain the above copyright notice,
+     this list of conditions and the following disclaimer.
+   * Redistributions  in binary form must reproduce the above copyright notice,
+     this  list of conditions and the following disclaimer in the documentation
+     and/or other materials provided with the distribution.
+ 
+ THIS  SOFTWARE  IS  PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ AND  ANY  EXPRESS  OR  IMPLIED  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ DISCLAIMED.  IN  NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ FOR  ANY  DIRECT,  INDIRECT,  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ DAMAGES  (INCLUDING,  BUT  NOT  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ SERVICES;  LOSS  OF  USE,  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ CAUSED  AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ OR  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*******************************************************************************/
+
+#include <stdexcept>
+
+#include "ConvertUTF.h"
+
+#include "StringTools.hh"
+
+
+namespace Mf {
+
+
+std::wstring multiToWide(const std::string& multiStr)
+{
+       size_t length = multiStr.length();
+
+       if (sizeof(wchar_t) == 2)
+       {
+               wchar_t* wideStr = new wchar_t[length + 1];
+
+               const UTF8* srcStart = reinterpret_cast<const UTF8*>(multiStr.c_str());
+               const UTF8* srcEnd = srcStart + length;
+               UTF16* targetStart = reinterpret_cast<UTF16*>(wideStr);
+               UTF16* targetEnd = targetStart + length+1;
+
+               ConversionResult res = ConvertUTF8toUTF16(&srcStart, srcEnd,
+                               &targetStart, targetEnd, lenientConversion);
+               if (res != conversionOK)
+               {
+                       delete[] wideStr;
+                       throw std::runtime_error("bad conversion from multi to wide characters");
+               }
+
+               *targetStart = 0;
+               std::wstring convertedStr(wideStr);
+               delete[] wideStr;
+
+               return convertedStr;
+       }
+       else if (sizeof(wchar_t) == 4)
+       {
+               wchar_t* wideStr = new wchar_t[length];
+
+               const UTF8* srcStart = reinterpret_cast<const UTF8*>(multiStr.c_str());
+               const UTF8* srcEnd = srcStart + length;
+               UTF32* targetStart = reinterpret_cast<UTF32*>(wideStr);
+               UTF32* targetEnd = targetStart + length;
+
+               ConversionResult res = ConvertUTF8toUTF32(&srcStart, srcEnd,
+                               &targetStart, targetEnd, lenientConversion);
+               if (res != conversionOK)
+               {
+                       delete[] wideStr;
+                       throw std::runtime_error("bad conversion from multi to wide characters");
+               }
+
+               *targetStart = 0;
+               std::wstring convertedStr(wideStr);
+               delete[] wideStr;
+
+               return convertedStr;
+       }
+       else
+       {
+               throw std::runtime_error("unknown size of wide characters");
+       }
+       return L"";
+}
+
+std::string wideToMulti(const std::wstring& wideStr)
+{
+       size_t length = wideStr.length();
+
+       if (sizeof(wchar_t) == 2)
+       {
+               size_t multiLength = 3 * length + 1;
+               char* multiStr = new char[multiLength];
+
+               const UTF16* srcStart = reinterpret_cast<const UTF16*>(wideStr.c_str());
+               const UTF16* srcEnd = srcStart + length;
+               UTF8* targetStart = reinterpret_cast<UTF8*>(multiStr);
+               UTF8* targetEnd = targetStart + multiLength;
+
+               ConversionResult res = ConvertUTF16toUTF8(&srcStart, srcEnd,
+                               &targetStart, targetEnd, lenientConversion);
+               if (res != conversionOK)
+               {
+                       delete[] multiStr;
+                       throw std::runtime_error("bad conversion from wide to multi-characters");
+               }
+
+               *targetStart = 0;
+               std::string convertedStr(multiStr);
+               delete[] multiStr;
+
+               return convertedStr;
+       }
+       else if (sizeof(wchar_t) == 4)
+       {
+               size_t multiLength = 4 * length + 1;
+               char* multiStr = new char[multiLength];
+
+               const UTF32* srcStart = reinterpret_cast<const UTF32*>(wideStr.c_str());
+               const UTF32* srcEnd = srcStart + length;
+               UTF8* targetStart = reinterpret_cast<UTF8*>(multiStr);
+               UTF8* targetEnd = targetStart + multiLength;
+
+               ConversionResult res = ConvertUTF32toUTF8(&srcStart, srcEnd,
+                               &targetStart, targetEnd, lenientConversion);
+               if (res != conversionOK)
+               {
+                       delete[] multiStr;
+                       throw std::runtime_error("bad conversion from wide to multi-characters");
+               }
+
+               *targetStart = 0;
+               std::string convertedStr(multiStr);
+               delete[] multiStr;
+
+               return convertedStr;
+       }
+       else
+       {
+               throw std::runtime_error("unknown size of wide characters");
+       }
+       return "";
+}
+
+
+} // namespace Mf
+
+/** vim: set ts=4 sw=4 tw=80: *************************************************/
+