diff options
Diffstat (limited to 'source/blender/blenlib/intern/string.c')
| -rw-r--r-- | source/blender/blenlib/intern/string.c | 112 |
1 files changed, 56 insertions, 56 deletions
diff --git a/source/blender/blenlib/intern/string.c b/source/blender/blenlib/intern/string.c index d626ca4bf09..ee5bd17c901 100644 --- a/source/blender/blenlib/intern/string.c +++ b/source/blender/blenlib/intern/string.c @@ -381,64 +381,64 @@ static const char trailingBytesForUTF8[256] = { int BLI_utf8_invalid_byte(const char *str, int length) { - const unsigned char *p, *pend = (unsigned char*)str + length; - unsigned char c; - int ab; - - for (p = (unsigned char*)str; p < pend; p++) { - c = *p; - if (c < 128) - continue; - if ((c & 0xc0) != 0xc0) - goto utf8_error; - ab = trailingBytesForUTF8[c]; - if (length < ab) - goto utf8_error; - length -= ab; - - p++; - /* Check top bits in the second byte */ - if ((*p & 0xc0) != 0x80) - goto utf8_error; - - /* Check for overlong sequences for each different length */ - switch (ab) { - /* Check for xx00 000x */ - case 1: - if ((c & 0x3e) == 0) goto utf8_error; - continue; /* We know there aren't any more bytes to check */ - - /* Check for 1110 0000, xx0x xxxx */ - case 2: - if (c == 0xe0 && (*p & 0x20) == 0) goto utf8_error; - break; - - /* Check for 1111 0000, xx00 xxxx */ - case 3: - if (c == 0xf0 && (*p & 0x30) == 0) goto utf8_error; - break; - - /* Check for 1111 1000, xx00 0xxx */ - case 4: - if (c == 0xf8 && (*p & 0x38) == 0) goto utf8_error; - break; - - /* Check for leading 0xfe or 0xff, - and then for 1111 1100, xx00 00xx */ - case 5: - if (c == 0xfe || c == 0xff || - (c == 0xfc && (*p & 0x3c) == 0)) goto utf8_error; - break; - } - - /* Check for valid bytes after the 2nd, if any; all must start 10 */ - while (--ab > 0) { - if ((*(p+1) & 0xc0) != 0x80) goto utf8_error; + const unsigned char *p, *pend = (unsigned char*)str + length; + unsigned char c; + int ab; + + for (p = (unsigned char*)str; p < pend; p++) { + c = *p; + if (c < 128) + continue; + if ((c & 0xc0) != 0xc0) + goto utf8_error; + ab = trailingBytesForUTF8[c]; + if (length < ab) + goto utf8_error; + length -= ab; + + p++; + /* Check top bits in the second byte */ + if ((*p & 0xc0) != 0x80) + goto utf8_error; + + /* Check for overlong sequences for each different length */ + switch (ab) { + /* Check for xx00 000x */ + case 1: + if ((c & 0x3e) == 0) goto utf8_error; + continue; /* We know there aren't any more bytes to check */ + + /* Check for 1110 0000, xx0x xxxx */ + case 2: + if (c == 0xe0 && (*p & 0x20) == 0) goto utf8_error; + break; + + /* Check for 1111 0000, xx00 xxxx */ + case 3: + if (c == 0xf0 && (*p & 0x30) == 0) goto utf8_error; + break; + + /* Check for 1111 1000, xx00 0xxx */ + case 4: + if (c == 0xf8 && (*p & 0x38) == 0) goto utf8_error; + break; + + /* Check for leading 0xfe or 0xff, + and then for 1111 1100, xx00 00xx */ + case 5: + if (c == 0xfe || c == 0xff || + (c == 0xfc && (*p & 0x3c) == 0)) goto utf8_error; + break; + } + + /* Check for valid bytes after the 2nd, if any; all must start 10 */ + while (--ab > 0) { + if ((*(p+1) & 0xc0) != 0x80) goto utf8_error; p++; /* do this after so we get usable offset - campbell */ - } - } + } + } - return -1; + return -1; utf8_error: |