Index: third_party/ots/tools/ttf-checksum.py |
diff --git a/third_party/ots/tools/ttf-checksum.py b/third_party/ots/tools/ttf-checksum.py |
deleted file mode 100644 |
index 802e3cc27ece12d9deeb7e62eb3c9842364339f1..0000000000000000000000000000000000000000 |
--- a/third_party/ots/tools/ttf-checksum.py |
+++ /dev/null |
@@ -1,44 +0,0 @@ |
-import struct |
-import sys |
- |
-def readU32(contents, offset): |
- wordBytes = contents[offset:offset + 4] |
- return struct.unpack('>I', wordBytes)[0] |
- |
-def readU16(contents, offset): |
- wordBytes = contents[offset:offset + 2] |
- return struct.unpack('>H', wordBytes)[0] |
- |
-def checkChecksum(infile): |
- contents = infile.read() |
- if len(contents) % 4: |
- print 'File length is not a multiple of 4' |
- |
- sum = 0 |
- for offset in range(0, len(contents), 4): |
- sum += readU32(contents, offset) |
- while sum >= 2**32: |
- sum -= 2**32 |
- print 'Sum of whole file: %x' % sum |
- |
- numTables = readU16(contents, 4) |
- |
- for offset in range(12, 12 + numTables * 16, 16): |
- tag = contents[offset:offset + 4] |
- chksum = readU32(contents, offset + 4) |
- toffset = readU32(contents, offset + 8) |
- tlength = readU32(contents, offset + 12) |
- |
- sum = 0 |
- for offset2 in range(toffset, toffset + tlength, 4): |
- sum += readU32(contents, offset2) |
- while sum >= 2**32: |
- sum -= 2**32 |
- if sum != chksum: |
- print 'Bad chksum: %s' % tag |
- |
-if __name__ == '__main__': |
- if len(sys.argv) != 2: |
- print 'Usage: %s <ttf filename>' % sys.argv[0] |
- else: |
- checkChecksum(file(sys.argv[1], 'r')) |