the massive refactoring effort

[chaz/yoink] / src / moof / string.cc

diff --git a/src/moof/string.cc b/src/moof/string.cc
new file mode 100644 (file)
index 0000000..a2c27bb
--- /dev/null
+++ b/src/moof/string.cc
@@ -0,0 +1,141 @@
+
+/*]  Copyright (c) 2009-2010, Charles McGarvey  [**************************
+**]  All rights reserved.
+*
+* vi:ts=4 sw=4 tw=75
+*
+* Distributable under the terms and conditions of the 2-clause BSD license;
+* see the file COPYING for a complete text of the license.
+*
+**************************************************************************/
+
+#include <stdexcept>
+
+#include "ConvertUTF.h"
+#include "string.hh"
+
+
+namespace moof {
+
+
+// TODO this code is ugly
+
+wstring multi_to_wide(const string& multi)
+{
+       size_t length = multi.length();
+
+       if (sizeof(wchar_t) == 2)
+       {
+               wchar_t* wide = new wchar_t[length + 1];
+
+               const UTF8* srcStart = reinterpret_cast<const UTF8*>(multi.c_str());
+               const UTF8* srcEnd = srcStart + length;
+               UTF16* targetStart = reinterpret_cast<UTF16*>(wide);
+               UTF16* targetEnd = targetStart + length+1;
+
+               ConversionResult res = ConvertUTF8toUTF16(&srcStart, srcEnd,
+                               &targetStart, targetEnd, lenientConversion);
+               if (res != conversionOK)
+               {
+                       delete[] wide;
+                       throw std::runtime_error("bad conversion from multi to wide characters");
+               }
+
+               *targetStart = 0;
+               wstring convertedStr(wide);
+               delete[] wide;
+
+               return convertedStr;
+       }
+       else if (sizeof(wchar_t) == 4)
+       {
+               wchar_t* wide = new wchar_t[length];
+
+               const UTF8* srcStart = reinterpret_cast<const UTF8*>(multi.c_str());
+               const UTF8* srcEnd = srcStart + length;
+               UTF32* targetStart = reinterpret_cast<UTF32*>(wide);
+               UTF32* targetEnd = targetStart + length;
+
+               ConversionResult res = ConvertUTF8toUTF32(&srcStart, srcEnd,
+                               &targetStart, targetEnd, lenientConversion);
+               if (res != conversionOK)
+               {
+                       delete[] wide;
+                       throw std::runtime_error("bad conversion from multi to wide characters");
+               }
+
+               *targetStart = 0;
+               wstring convertedStr(wide);
+               delete[] wide;
+
+               return convertedStr;
+       }
+       else
+       {
+               throw std::runtime_error("unknown size of wide characters");
+       }
+       return L"";
+}
+
+string wide_to_multi(const wstring& wide)
+{
+       size_t length = wide.length();
+
+       if (sizeof(wchar_t) == 2)
+       {
+               size_t multiLength = 3 * length + 1;
+               char* multi = new char[multiLength];
+
+               const UTF16* srcStart = reinterpret_cast<const UTF16*>(wide.c_str());
+               const UTF16* srcEnd = srcStart + length;
+               UTF8* targetStart = reinterpret_cast<UTF8*>(multi);
+               UTF8* targetEnd = targetStart + multiLength;
+
+               ConversionResult res = ConvertUTF16toUTF8(&srcStart, srcEnd,
+                               &targetStart, targetEnd, lenientConversion);
+               if (res != conversionOK)
+               {
+                       delete[] multi;
+                       throw std::runtime_error("bad conversion from wide to multi-characters");
+               }
+
+               *targetStart = 0;
+               string convertedStr(multi);
+               delete[] multi;
+
+               return convertedStr;
+       }
+       else if (sizeof(wchar_t) == 4)
+       {
+               size_t multiLength = 4 * length + 1;
+               char* multi = new char[multiLength];
+
+               const UTF32* srcStart = reinterpret_cast<const UTF32*>(wide.c_str());
+               const UTF32* srcEnd = srcStart + length;
+               UTF8* targetStart = reinterpret_cast<UTF8*>(multi);
+               UTF8* targetEnd = targetStart + multiLength;
+
+               ConversionResult res = ConvertUTF32toUTF8(&srcStart, srcEnd,
+                               &targetStart, targetEnd, lenientConversion);
+               if (res != conversionOK)
+               {
+                       delete[] multi;
+                       throw std::runtime_error("bad conversion from wide to multi-characters");
+               }
+
+               *targetStart = 0;
+               string convertedStr(multi);
+               delete[] multi;
+
+               return convertedStr;
+       }
+       else
+       {
+               throw std::runtime_error("unknown size of wide characters");
+       }
+       return "";
+}
+
+
+} // namespace moof
+