MrMonopoly/raylib
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Fix GetCodepointNext to return default value with size=0 on invalid input. Modify LoadCodepoints to work when GetCodepointNext returns a size of 0. All internal use of GetCodepointNext and GetCodepointPrev checked. This fix may break external code dealing with invalid input as the old code erroneously never returned a size of 0, external code that doesn't properly check for size=0 may endlessly loop or overflow a buffer on invalid input.

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anon 2023-04-01 11:47:08 +01:00
parent 17c443ee6d
commit fb89eac7dc
1 changed files with 4 additions and 2 deletions
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6
src/rtext.c
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@ -1704,7 +1704,9 @@ int *LoadCodepoints(const char *text, int *count)
for (int i = 0; i < textLength; codepointCount++)
{
codepoints[codepointCount] = GetCodepointNext(text + i, &codepointSize);
i += codepointSize;
if (codepoints[codepointCount] == 0x3f) i += 1;
else i += codepointSize;
}
// Re-allocate buffer to the actual number of codepoints loaded
@ -1917,7 +1919,7 @@ int GetCodepointNext(const char *text, int *codepointSize)
codepoint = ((0x1f & ptr[0]) << 6) | (0x3f & ptr[1]);
*codepointSize = 2;
}
else
else if (0x00 == (0x80 & ptr[0]))
{
// 1 byte UTF-8 codepoint
codepoint = ptr[0];