The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/other-licenses/7zstub/src/Common/UTFConvert.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,91 @@
     1.4 +// UTFConvert.cpp
     1.5 +
     1.6 +#include "StdAfx.h"
     1.7 +
     1.8 +#include "UTFConvert.h"
     1.9 +#include "Types.h"
    1.10 +
    1.11 +static Byte kUtf8Limits[5] = { 0xC0, 0xE0, 0xF0, 0xF8, 0xFC };
    1.12 +
    1.13 +// These functions are for UTF8 <-> UTF16 conversion.
    1.14 +
    1.15 +bool ConvertUTF8ToUnicode(const AString &src, UString &dest)
    1.16 +{
    1.17 +  dest.Empty();
    1.18 +  for(int i = 0; i < src.Length();)
    1.19 +  {
    1.20 +    Byte c = (Byte)src[i++];
    1.21 +    if (c < 0x80)
    1.22 +    {
    1.23 +      dest += (wchar_t)c;
    1.24 +      continue;
    1.25 +    }
    1.26 +    if(c < 0xC0)
    1.27 +      return false;
    1.28 +    int numAdds;
    1.29 +    for (numAdds = 1; numAdds < 5; numAdds++)
    1.30 +      if (c < kUtf8Limits[numAdds])
    1.31 +        break;
    1.32 +    UInt32 value = (c - kUtf8Limits[numAdds - 1]);
    1.33 +    do
    1.34 +    {
    1.35 +      if (i >= src.Length())
    1.36 +        return false;
    1.37 +      Byte c2 = (Byte)src[i++];
    1.38 +      if (c2 < 0x80 || c2 >= 0xC0)
    1.39 +        return false;
    1.40 +      value <<= 6;
    1.41 +      value |= (c2 - 0x80);
    1.42 +      numAdds--;
    1.43 +    }
    1.44 +    while(numAdds > 0);
    1.45 +    if (value < 0x10000)
    1.46 +      dest += (wchar_t)(value);
    1.47 +    else
    1.48 +    {
    1.49 +      value -= 0x10000;
    1.50 +      if (value >= 0x100000)
    1.51 +        return false;
    1.52 +      dest += (wchar_t)(0xD800 + (value >> 10));
    1.53 +      dest += (wchar_t)(0xDC00 + (value & 0x3FF));
    1.54 +    }
    1.55 +  }
    1.56 +  return true; 
    1.57 +}
    1.58 +
    1.59 +bool ConvertUnicodeToUTF8(const UString &src, AString &dest)
    1.60 +{
    1.61 +  dest.Empty();
    1.62 +  for(int i = 0; i < src.Length();)
    1.63 +  {
    1.64 +    UInt32 value = (UInt32)src[i++];
    1.65 +    if (value < 0x80)
    1.66 +    {
    1.67 +      dest += (char)value;
    1.68 +      continue;
    1.69 +    }
    1.70 +    if (value >= 0xD800 && value < 0xE000)
    1.71 +    {
    1.72 +      if (value >= 0xDC00)
    1.73 +        return false;
    1.74 +      if (i >= src.Length())
    1.75 +        return false;
    1.76 +      UInt32 c2 = (UInt32)src[i++];
    1.77 +      if (c2 < 0xDC00 || c2 >= 0xE000)
    1.78 +        return false;
    1.79 +      value = ((value - 0xD800) << 10) | (c2 - 0xDC00);
    1.80 +    }
    1.81 +    int numAdds;
    1.82 +    for (numAdds = 1; numAdds < 5; numAdds++)
    1.83 +      if (value < (((UInt32)1) << (numAdds * 5 + 6)))
    1.84 +        break;
    1.85 +    dest += (char)(kUtf8Limits[numAdds - 1] + (value >> (6 * numAdds)));
    1.86 +    do
    1.87 +    {
    1.88 +      numAdds--;
    1.89 +      dest += (char)(0x80 + ((value >> (6 * numAdds)) & 0x3F));
    1.90 +    }
    1.91 +    while(numAdds > 0);
    1.92 +  }
    1.93 +  return true;
    1.94 +}