gfx/thebes/gencjkcisvs.py@97036ab72558 (annotated)
gfx/thebes/gencjkcisvs.py
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | # This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | # License, v. 2.0. If a copy of the MPL was not distributed with this file, |
| michael@0 | 3 | # You can obtain one at http://mozilla.org/MPL/2.0/. |
| michael@0 | 4 | |
| michael@0 | 5 | import os.path |
| michael@0 | 6 | import re |
| michael@0 | 7 | import sys |
| michael@0 | 8 | |
| michael@0 | 9 | f = open(sys.argv[1] if len(sys.argv) > 1 else 'StandardizedVariants.txt') |
| michael@0 | 10 | |
| michael@0 | 11 | line = f.readline() |
| michael@0 | 12 | m = re.compile('^# (StandardizedVariants(-\d+(\.\d+)*)?\.txt)').search(line) |
| michael@0 | 13 | fileversion = m.group(1) |
| michael@0 | 14 | vsdict = {} |
| michael@0 | 15 | r = re.compile('^([0-9A-F]{4,6}) (FE0[0-9A-F]); CJK COMPATIBILITY IDEOGRAPH-([0-9A-F]{4,6});') |
| michael@0 | 16 | while True: |
| michael@0 | 17 | line = f.readline() |
| michael@0 | 18 | if not line: |
| michael@0 | 19 | break |
| michael@0 | 20 | if not 'CJK COMPATIBILITY IDEOGRAPH-' in line: |
| michael@0 | 21 | continue |
| michael@0 | 22 | |
| michael@0 | 23 | m = r.search(line) |
| michael@0 | 24 | unified = int(m.group(1), 16) |
| michael@0 | 25 | vs = int(m.group(2), 16) |
| michael@0 | 26 | compat = int(m.group(3), 16) |
| michael@0 | 27 | |
| michael@0 | 28 | if not vs in vsdict: |
| michael@0 | 29 | vsdict[vs] = {} |
| michael@0 | 30 | vsdict[vs][unified] = compat |
| michael@0 | 31 | |
| michael@0 | 32 | f.close |
| michael@0 | 33 | |
| michael@0 | 34 | offsets = [] |
| michael@0 | 35 | length = 10 + 11 * len(vsdict) |
| michael@0 | 36 | for (k, mappings) in sorted(vsdict.items()): |
| michael@0 | 37 | offsets.append(length) |
| michael@0 | 38 | length += 4 + 5 * len(mappings) |
| michael@0 | 39 | |
| michael@0 | 40 | f = open(sys.argv[2] if len(sys.argv) > 2 else 'CJKCompatSVS.cpp', 'wb') |
| michael@0 | 41 | f.write("""// Generated by %s. Do not edit. |
| michael@0 | 42 | |
| michael@0 | 43 | #include <stdint.h> |
| michael@0 | 44 | |
| michael@0 | 45 | #define U16(v) (((v) >> 8) & 0xFF), ((v) & 0xFF) |
| michael@0 | 46 | #define U24(v) (((v) >> 16) & 0xFF), (((v) >> 8) & 0xFF), ((v) & 0xFF) |
| michael@0 | 47 | #define U32(v) (((v) >> 24) & 0xFF), (((v) >> 16) & 0xFF), (((v) >> 8) & 0xFF), ((v) & 0xFF) |
| michael@0 | 48 | #define GLYPH(v) U16(v >= 0x2F800 ? (v) - (0x2F800 - 0xFB00) : (v)) |
| michael@0 | 49 | |
| michael@0 | 50 | // Fallback mappings for CJK Compatibility Ideographs Standardized Variants |
| michael@0 | 51 | // taken from %s. |
| michael@0 | 52 | // Using OpenType format 14 cmap subtable structure to reuse the lookup code |
| michael@0 | 53 | // for fonts. The glyphID field is used to store the corresponding codepoints |
| michael@0 | 54 | // CJK Compatibility Ideographs. To fit codepoints into the 16-bit glyphID |
| michael@0 | 55 | // field, CJK Compatibility Ideographs Supplement (U+2F800..U+2FA1F) will be |
| michael@0 | 56 | // mapped to 0xFB00..0xFD1F. |
| michael@0 | 57 | extern const uint8_t sCJKCompatSVSTable[] = { |
| michael@0 | 58 | """ % (os.path.basename(sys.argv[0]), fileversion)) |
| michael@0 | 59 | f.write(' U16(14), // format\n') |
| michael@0 | 60 | f.write(' U32(%d), // length\n' % length) |
| michael@0 | 61 | f.write(' U32(%d), // numVarSelectorRecords\n' % len(vsdict)) |
| michael@0 | 62 | for i, k in enumerate(sorted(vsdict.keys())): |
| michael@0 | 63 | f.write(' U24(0x%04X), U32(0), U32(%d), // varSelectorRecord[%d]\n' % (k, offsets[i], i)) |
| michael@0 | 64 | for (k, mappings) in sorted(vsdict.items()): |
| michael@0 | 65 | f.write(' // 0x%04X\n' % k) |
| michael@0 | 66 | f.write(' U32(%d), // numUVSMappings\n' % len(mappings)) |
| michael@0 | 67 | for (unified, compat) in sorted(mappings.items()): |
| michael@0 | 68 | f.write(' U24(0x%04X), GLYPH(0x%04X),\n' % (unified, compat)) |
| michael@0 | 69 | f.write("""}; |
| michael@0 | 70 | |
| michael@0 | 71 | #undef U16 |
| michael@0 | 72 | #undef U24 |
| michael@0 | 73 | #undef U32 |
| michael@0 | 74 | #undef GLYPH |
| michael@0 | 75 | |
| michael@0 | 76 | static_assert(sizeof sCJKCompatSVSTable == %d, "Table generator has a bug."); |
| michael@0 | 77 | """ % length) |
