misc/libphysfs/lzma/CPP/Common/UTFConvert.cpp
author Wuzzy <almikes@aol.com>
Sat, 15 Apr 2017 23:21:13 +0200
changeset 12265 0641da8c22ee
parent 12218 bb5522e88ab2
permissions -rw-r--r--
Add two main menu tips regarding mission panel
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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// UTFConvert.cpp
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#include "StdAfx.h"
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#include "UTFConvert.h"
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#include "Types.h"
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static Byte kUtf8Limits[5] = { 0xC0, 0xE0, 0xF0, 0xF8, 0xFC };
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// These functions are for UTF8 <-> UTF16 conversion.
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bool ConvertUTF8ToUnicode(const AString &src, UString &dest)
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{
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  dest.Empty();
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  for(int i = 0; i < src.Length();)
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  {
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    Byte c = (Byte)src[i++];
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    if (c < 0x80)
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    {
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      dest += (wchar_t)c;
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      continue;
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    }
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    if(c < 0xC0)
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      return false;
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    int numAdds;
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    for (numAdds = 1; numAdds < 5; numAdds++)
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      if (c < kUtf8Limits[numAdds])
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        break;
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    UInt32 value = (c - kUtf8Limits[numAdds - 1]);
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    do
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    {
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      if (i >= src.Length())
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        return false;
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      Byte c2 = (Byte)src[i++];
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      if (c2 < 0x80 || c2 >= 0xC0)
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        return false;
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      value <<= 6;
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      value |= (c2 - 0x80);
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      numAdds--;
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    }
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    while(numAdds > 0);
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    if (value < 0x10000)
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      dest += (wchar_t)(value);
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    else
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    {
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      value -= 0x10000;
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      if (value >= 0x100000)
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        return false;
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      dest += (wchar_t)(0xD800 + (value >> 10));
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      dest += (wchar_t)(0xDC00 + (value & 0x3FF));
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    }
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  }
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  return true; 
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}
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bool ConvertUnicodeToUTF8(const UString &src, AString &dest)
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{
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  dest.Empty();
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  for(int i = 0; i < src.Length();)
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  {
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    UInt32 value = (UInt32)src[i++];
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    if (value < 0x80)
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    {
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      dest += (char)value;
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      continue;
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    }
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    if (value >= 0xD800 && value < 0xE000)
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    {
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      if (value >= 0xDC00)
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        return false;
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      if (i >= src.Length())
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        return false;
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      UInt32 c2 = (UInt32)src[i++];
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      if (c2 < 0xDC00 || c2 >= 0xE000)
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        return false;
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    76
      value = ((value - 0xD800) << 10) | (c2 - 0xDC00);
bb5522e88ab2 bulk copy of latest physfs to our misc/libphysfs since this seems to fix an off-by-1 error reliably hit in readln read of 1 byte probably introduced in the addition of the buffered read. Whether this is excessive or whether libphysfs should even be maintained by us is another matter. But at least we shouldn't crash
nemo
parents:
diff changeset
    77
    }
bb5522e88ab2 bulk copy of latest physfs to our misc/libphysfs since this seems to fix an off-by-1 error reliably hit in readln read of 1 byte probably introduced in the addition of the buffered read. Whether this is excessive or whether libphysfs should even be maintained by us is another matter. But at least we shouldn't crash
nemo
parents:
diff changeset
    78
    int numAdds;
bb5522e88ab2 bulk copy of latest physfs to our misc/libphysfs since this seems to fix an off-by-1 error reliably hit in readln read of 1 byte probably introduced in the addition of the buffered read. Whether this is excessive or whether libphysfs should even be maintained by us is another matter. But at least we shouldn't crash
nemo
parents:
diff changeset
    79
    for (numAdds = 1; numAdds < 5; numAdds++)
bb5522e88ab2 bulk copy of latest physfs to our misc/libphysfs since this seems to fix an off-by-1 error reliably hit in readln read of 1 byte probably introduced in the addition of the buffered read. Whether this is excessive or whether libphysfs should even be maintained by us is another matter. But at least we shouldn't crash
nemo
parents:
diff changeset
    80
      if (value < (((UInt32)1) << (numAdds * 5 + 6)))
bb5522e88ab2 bulk copy of latest physfs to our misc/libphysfs since this seems to fix an off-by-1 error reliably hit in readln read of 1 byte probably introduced in the addition of the buffered read. Whether this is excessive or whether libphysfs should even be maintained by us is another matter. But at least we shouldn't crash
nemo
parents:
diff changeset
    81
        break;
bb5522e88ab2 bulk copy of latest physfs to our misc/libphysfs since this seems to fix an off-by-1 error reliably hit in readln read of 1 byte probably introduced in the addition of the buffered read. Whether this is excessive or whether libphysfs should even be maintained by us is another matter. But at least we shouldn't crash
nemo
parents:
diff changeset
    82
    dest += (char)(kUtf8Limits[numAdds - 1] + (value >> (6 * numAdds)));
bb5522e88ab2 bulk copy of latest physfs to our misc/libphysfs since this seems to fix an off-by-1 error reliably hit in readln read of 1 byte probably introduced in the addition of the buffered read. Whether this is excessive or whether libphysfs should even be maintained by us is another matter. But at least we shouldn't crash
nemo
parents:
diff changeset
    83
    do
bb5522e88ab2 bulk copy of latest physfs to our misc/libphysfs since this seems to fix an off-by-1 error reliably hit in readln read of 1 byte probably introduced in the addition of the buffered read. Whether this is excessive or whether libphysfs should even be maintained by us is another matter. But at least we shouldn't crash
nemo
parents:
diff changeset
    84
    {
bb5522e88ab2 bulk copy of latest physfs to our misc/libphysfs since this seems to fix an off-by-1 error reliably hit in readln read of 1 byte probably introduced in the addition of the buffered read. Whether this is excessive or whether libphysfs should even be maintained by us is another matter. But at least we shouldn't crash
nemo
parents:
diff changeset
    85
      numAdds--;
bb5522e88ab2 bulk copy of latest physfs to our misc/libphysfs since this seems to fix an off-by-1 error reliably hit in readln read of 1 byte probably introduced in the addition of the buffered read. Whether this is excessive or whether libphysfs should even be maintained by us is another matter. But at least we shouldn't crash
nemo
parents:
diff changeset
    86
      dest += (char)(0x80 + ((value >> (6 * numAdds)) & 0x3F));
bb5522e88ab2 bulk copy of latest physfs to our misc/libphysfs since this seems to fix an off-by-1 error reliably hit in readln read of 1 byte probably introduced in the addition of the buffered read. Whether this is excessive or whether libphysfs should even be maintained by us is another matter. But at least we shouldn't crash
nemo
parents:
diff changeset
    87
    }
bb5522e88ab2 bulk copy of latest physfs to our misc/libphysfs since this seems to fix an off-by-1 error reliably hit in readln read of 1 byte probably introduced in the addition of the buffered read. Whether this is excessive or whether libphysfs should even be maintained by us is another matter. But at least we shouldn't crash
nemo
parents:
diff changeset
    88
    while(numAdds > 0);
bb5522e88ab2 bulk copy of latest physfs to our misc/libphysfs since this seems to fix an off-by-1 error reliably hit in readln read of 1 byte probably introduced in the addition of the buffered read. Whether this is excessive or whether libphysfs should even be maintained by us is another matter. But at least we shouldn't crash
nemo
parents:
diff changeset
    89
  }
bb5522e88ab2 bulk copy of latest physfs to our misc/libphysfs since this seems to fix an off-by-1 error reliably hit in readln read of 1 byte probably introduced in the addition of the buffered read. Whether this is excessive or whether libphysfs should even be maintained by us is another matter. But at least we shouldn't crash
nemo
parents:
diff changeset
    90
  return true;
bb5522e88ab2 bulk copy of latest physfs to our misc/libphysfs since this seems to fix an off-by-1 error reliably hit in readln read of 1 byte probably introduced in the addition of the buffered read. Whether this is excessive or whether libphysfs should even be maintained by us is another matter. But at least we shouldn't crash
nemo
parents:
diff changeset
    91
}