| //===-- ConvertUTFWrapper.cpp - Wrap ConvertUTF.h with clang data types -----=== |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "clang/Basic/ConvertUTF.h" |
| #include "clang/Basic/LLVM.h" |
| |
| namespace clang { |
| |
| bool ConvertUTF8toWide(unsigned WideCharWidth, llvm::StringRef Source, |
| char *&ResultPtr) { |
| assert(WideCharWidth == 1 || WideCharWidth == 2 || WideCharWidth == 4); |
| ConversionResult result = conversionOK; |
| // Copy the character span over. |
| if (WideCharWidth == 1) { |
| if (!isLegalUTF8String(reinterpret_cast<const UTF8*>(Source.begin()), |
| reinterpret_cast<const UTF8*>(Source.end()))) |
| result = sourceIllegal; |
| memcpy(ResultPtr, Source.data(), Source.size()); |
| ResultPtr += Source.size(); |
| } else if (WideCharWidth == 2) { |
| const UTF8 *sourceStart = (const UTF8*)Source.data(); |
| // FIXME: Make the type of the result buffer correct instead of |
| // using reinterpret_cast. |
| UTF16 *targetStart = reinterpret_cast<UTF16*>(ResultPtr); |
| ConversionFlags flags = strictConversion; |
| result = ConvertUTF8toUTF16( |
| &sourceStart, sourceStart + Source.size(), |
| &targetStart, targetStart + 2*Source.size(), flags); |
| if (result == conversionOK) |
| ResultPtr = reinterpret_cast<char*>(targetStart); |
| } else if (WideCharWidth == 4) { |
| const UTF8 *sourceStart = (const UTF8*)Source.data(); |
| // FIXME: Make the type of the result buffer correct instead of |
| // using reinterpret_cast. |
| UTF32 *targetStart = reinterpret_cast<UTF32*>(ResultPtr); |
| ConversionFlags flags = strictConversion; |
| result = ConvertUTF8toUTF32( |
| &sourceStart, sourceStart + Source.size(), |
| &targetStart, targetStart + 4*Source.size(), flags); |
| if (result == conversionOK) |
| ResultPtr = reinterpret_cast<char*>(targetStart); |
| } |
| assert((result != targetExhausted) |
| && "ConvertUTF8toUTFXX exhausted target buffer"); |
| return result == conversionOK; |
| } |
| |
| } |