cpp.library.encoding/src/encoding.c at master · fooofei/cpp.library.encoding · GitHub - github.com

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#include <stdbool.h>


#include "../include/encoding/encoding.h"

#ifdef WIN32
#include "encoding_win.h"
#else

#include "encoding_posix.h"

#endif //WIN32

// sample : 00fe316d3e96a0d4964a0fa60bbd7ae7  size is not even.
#define _CHECKSIZE(size) \
do{ \
  if (!is_even_size(size)) \
  { \
    if (size) \
    { \
     --size; \
    } \
  } \
} while (0);
#define _UNUSED_PARAM do{(void)src; (void)src_size; (void)dst; (void)dst_size;} while(0)


static
bool
is_even_size(size_t size)
{
  return (((size & 0x1) ^ 0x1) == 1);
}

HRESULT
mbcs_2_utf16le(const void *src, size_t src_size, void *dst, size_t *dst_size)
{
  _CHECKSIZE(*dst_size);
#ifdef WIN32
  size_t dst_cbsize = *dst_size;
  dst_cbsize = dst_cbsize >> 1;
  HRESULT hr;
  hr = mbcs_2_utf16le_windows((const char *)src, src_size, (wchar_t *)dst, &dst_cbsize);
  *dst_size = dst_cbsize << 1;
  return hr;
#else
  return mbcs_2_utf16le_posix(src, src_size, dst, dst_size);
#endif
}

HRESULT
utf16le_2_mbcs(const void *src, size_t src_size, void *dst, size_t *dst_size)
{
  _CHECKSIZE(src_size);
#ifdef WIN32
  return utf16le_2_mbcs_windows((const wchar_t *)src, src_size >> 1, (char *)dst, dst_size);
#else
  return utf16le_2_mbcs_posix(src, src_size, dst, dst_size);
#endif
}

HRESULT
mbcs_2_utf32le(const void *src, size_t src_size, void *dst, size_t *dst_size)
{
#ifdef WIN32
  _UNUSED_PARAM;
  return E_NOTIMPL;
#else
  return mbcs_2_utf32le_posix(src, src_size, dst, dst_size);
#endif
}

HRESULT
utf32le_2_mbcs(const void *src, size_t src_size, void *dst, size_t *dst_size)
{
#ifdef WIN32
  _UNUSED_PARAM;
  return E_NOTIMPL;
#else
  return utf32le_2_mbcs_posix(src, src_size, dst, dst_size);
#endif
}

HRESULT
mbcs_2_utf8(const void *src, size_t src_size, void *dst, size_t *dst_size)
{
#ifdef WIN32
  _UNUSED_PARAM;
  return E_NOTIMPL;
#else
  return mbcs_2_utf8_posix(src, src_size, dst, dst_size);
#endif
}

HRESULT
utf8_2_mbcs(const void *src, size_t src_size, void *dst, size_t *dst_size)
{
#ifdef WIN32
  _UNUSED_PARAM;
  return E_NOTIMPL;
#else
  return utf8_2_mbcs_posix(src, src_size, dst, dst_size);
#endif
}

HRESULT
utf8_2_utf16le(const void *src, size_t src_size, void *dst, size_t *dst_size)
{
  _CHECKSIZE(*dst_size);
#ifdef WIN32
  size_t z = *dst_size;
  z = z >> 1;
  HRESULT hr;
  hr = utf8_2_utf16le_windows((const char *)src, src_size, (wchar_t *)dst, &z);
  *dst_size = z << 1;
  return hr;
#else
  return utf8_2_utf16le_posix(src, src_size, dst, dst_size);
#endif
}

HRESULT
utf16le_2_utf8(const void *src, size_t src_size, void *dst, size_t *dst_size)
{
  _CHECKSIZE(src_size);
#ifdef WIN32
  return utf16le_2_utf8_windows((const wchar_t *)src, src_size >> 1, (char *)dst, dst_size);
#else
  return utf16le_2_utf8_posix(src, src_size, dst, dst_size);
#endif
}

HRESULT
utf8_2_utf32le(const void *src, size_t src_size, void *dst, size_t *dst_size)
{
#ifdef WIN32
  _UNUSED_PARAM;
  return E_NOTIMPL;
#else
  return utf8_2_utf32le_posix(src, src_size, dst, dst_size);
#endif
}

HRESULT
utf32le_2_utf8(const void *src, size_t src_size, void *dst, size_t *dst_size)
{
#ifdef WIN32
  _UNUSED_PARAM;
  return E_NOTIMPL;
#else
  return utf32le_2_utf8_posix(src, src_size, dst, dst_size);
#endif
}

HRESULT
utf16le_2_utf32le(const void *src, size_t src_size, void *dst, size_t *dst_size)
{
#ifdef WIN32
  _UNUSED_PARAM;
  return E_NOTIMPL;
#else
  return utf16le_2_utf32le_posix(src, src_size, dst, dst_size);
#endif
}

HRESULT
utf32le_2_utf16le(const void *src, size_t src_size, void *dst, size_t *dst_size)
{
#ifdef WIN32
  _UNUSED_PARAM;
  return E_NOTIMPL;
#else
  return utf32le_2_utf16le_posix(src, src_size, dst, dst_size);
#endif
}

//static const char* kEncodeUtf8Header = "\xEF\xBB\xBF";
//static const char* kEncodeUtf16LittleEndianHeader="\xFF\xFE";
//static const char* kEncodeUtf16BigEndianHeader = "\xFE\xFF";
//static const char* kEncodeUtf32LittleEndianHeader= "\xFF\xFE\x00\x00";
//static const char* kEncodeUtf32BigEndianHeader = "\x00\x00\xFE\xFF";