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comparison: gfx/thebes/gencjkcisvs.py
gfx/thebes/gencjkcisvs.py
- changeset 0
- 6474c204b198
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| -1:000000000000 | 0:2046043ab802 |
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| 1 # This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 # License, v. 2.0. If a copy of the MPL was not distributed with this file, | |
| 3 # You can obtain one at http://mozilla.org/MPL/2.0/. | |
| 4 | |
| 5 import os.path | |
| 6 import re | |
| 7 import sys | |
| 8 | |
| 9 f = open(sys.argv[1] if len(sys.argv) > 1 else 'StandardizedVariants.txt') | |
| 10 | |
| 11 line = f.readline() | |
| 12 m = re.compile('^# (StandardizedVariants(-\d+(\.\d+)*)?\.txt)').search(line) | |
| 13 fileversion = m.group(1) | |
| 14 vsdict = {} | |
| 15 r = re.compile('^([0-9A-F]{4,6}) (FE0[0-9A-F]); CJK COMPATIBILITY IDEOGRAPH-([0-9A-F]{4,6});') | |
| 16 while True: | |
| 17 line = f.readline() | |
| 18 if not line: | |
| 19 break | |
| 20 if not 'CJK COMPATIBILITY IDEOGRAPH-' in line: | |
| 21 continue | |
| 22 | |
| 23 m = r.search(line) | |
| 24 unified = int(m.group(1), 16) | |
| 25 vs = int(m.group(2), 16) | |
| 26 compat = int(m.group(3), 16) | |
| 27 | |
| 28 if not vs in vsdict: | |
| 29 vsdict[vs] = {} | |
| 30 vsdict[vs][unified] = compat | |
| 31 | |
| 32 f.close | |
| 33 | |
| 34 offsets = [] | |
| 35 length = 10 + 11 * len(vsdict) | |
| 36 for (k, mappings) in sorted(vsdict.items()): | |
| 37 offsets.append(length) | |
| 38 length += 4 + 5 * len(mappings) | |
| 39 | |
| 40 f = open(sys.argv[2] if len(sys.argv) > 2 else 'CJKCompatSVS.cpp', 'wb') | |
| 41 f.write("""// Generated by %s. Do not edit. | |
| 42 | |
| 43 #include <stdint.h> | |
| 44 | |
| 45 #define U16(v) (((v) >> 8) & 0xFF), ((v) & 0xFF) | |
| 46 #define U24(v) (((v) >> 16) & 0xFF), (((v) >> 8) & 0xFF), ((v) & 0xFF) | |
| 47 #define U32(v) (((v) >> 24) & 0xFF), (((v) >> 16) & 0xFF), (((v) >> 8) & 0xFF), ((v) & 0xFF) | |
| 48 #define GLYPH(v) U16(v >= 0x2F800 ? (v) - (0x2F800 - 0xFB00) : (v)) | |
| 49 | |
| 50 // Fallback mappings for CJK Compatibility Ideographs Standardized Variants | |
| 51 // taken from %s. | |
| 52 // Using OpenType format 14 cmap subtable structure to reuse the lookup code | |
| 53 // for fonts. The glyphID field is used to store the corresponding codepoints | |
| 54 // CJK Compatibility Ideographs. To fit codepoints into the 16-bit glyphID | |
| 55 // field, CJK Compatibility Ideographs Supplement (U+2F800..U+2FA1F) will be | |
| 56 // mapped to 0xFB00..0xFD1F. | |
| 57 extern const uint8_t sCJKCompatSVSTable[] = { | |
| 58 """ % (os.path.basename(sys.argv[0]), fileversion)) | |
| 59 f.write(' U16(14), // format\n') | |
| 60 f.write(' U32(%d), // length\n' % length) | |
| 61 f.write(' U32(%d), // numVarSelectorRecords\n' % len(vsdict)) | |
| 62 for i, k in enumerate(sorted(vsdict.keys())): | |
| 63 f.write(' U24(0x%04X), U32(0), U32(%d), // varSelectorRecord[%d]\n' % (k, offsets[i], i)) | |
| 64 for (k, mappings) in sorted(vsdict.items()): | |
| 65 f.write(' // 0x%04X\n' % k) | |
| 66 f.write(' U32(%d), // numUVSMappings\n' % len(mappings)) | |
| 67 for (unified, compat) in sorted(mappings.items()): | |
| 68 f.write(' U24(0x%04X), GLYPH(0x%04X),\n' % (unified, compat)) | |
| 69 f.write("""}; | |
| 70 | |
| 71 #undef U16 | |
| 72 #undef U24 | |
| 73 #undef U32 | |
| 74 #undef GLYPH | |
| 75 | |
| 76 static_assert(sizeof sCJKCompatSVSTable == %d, "Table generator has a bug."); | |
| 77 """ % length) |
