The Tor Browser / file comparison
comparison: gfx/harfbuzz/src/gen-indic-table.py
gfx/harfbuzz/src/gen-indic-table.py
- changeset 0
- 6474c204b198
equal
deleted
inserted
replaced
| -1:000000000000 | 0:f8aad1069853 |
|---|---|
| 1 #!/usr/bin/python | |
| 2 | |
| 3 import sys | |
| 4 | |
| 5 if len (sys.argv) != 4: | |
| 6 print >>sys.stderr, "usage: ./gen-indic-table.py IndicSyllabicCategory.txt IndicMatraCategory.txt Blocks.txt" | |
| 7 sys.exit (1) | |
| 8 | |
| 9 files = [file (x) for x in sys.argv[1:]] | |
| 10 | |
| 11 headers = [[f.readline () for i in range (2)] for f in files] | |
| 12 | |
| 13 blocks = {} | |
| 14 data = [{} for f in files] | |
| 15 values = [{} for f in files] | |
| 16 for i, f in enumerate (files): | |
| 17 for line in f: | |
| 18 | |
| 19 j = line.find ('#') | |
| 20 if j >= 0: | |
| 21 line = line[:j] | |
| 22 | |
| 23 fields = [x.strip () for x in line.split (';')] | |
| 24 if len (fields) == 1: | |
| 25 continue | |
| 26 | |
| 27 uu = fields[0].split ('..') | |
| 28 start = int (uu[0], 16) | |
| 29 if len (uu) == 1: | |
| 30 end = start | |
| 31 else: | |
| 32 end = int (uu[1], 16) | |
| 33 | |
| 34 t = fields[1] | |
| 35 | |
| 36 for u in range (start, end + 1): | |
| 37 data[i][u] = t | |
| 38 values[i][t] = values[i].get (t, 0) + 1 | |
| 39 | |
| 40 if i == 2: | |
| 41 blocks[t] = (start, end) | |
| 42 | |
| 43 # Merge data into one dict: | |
| 44 defaults = ('Other', 'Not_Applicable', 'No_Block') | |
| 45 for i,v in enumerate (defaults): | |
| 46 values[i][v] = values[i].get (v, 0) + 1 | |
| 47 combined = {} | |
| 48 for i,d in enumerate (data): | |
| 49 for u,v in d.items (): | |
| 50 if i == 2 and not u in combined: | |
| 51 continue | |
| 52 if not u in combined: | |
| 53 combined[u] = list (defaults) | |
| 54 combined[u][i] = v | |
| 55 data = combined | |
| 56 del combined | |
| 57 num = len (data) | |
| 58 | |
| 59 # Move the outliers NO-BREAK SPACE and DOTTED CIRCLE out | |
| 60 singles = {} | |
| 61 for u in [0x00A0, 0x25CC]: | |
| 62 singles[u] = data[u] | |
| 63 del data[u] | |
| 64 | |
| 65 print "/* == Start of generated table == */" | |
| 66 print "/*" | |
| 67 print " * The following table is generated by running:" | |
| 68 print " *" | |
| 69 print " * ./gen-indic-table.py IndicSyllabicCategory.txt IndicMatraCategory.txt Blocks.txt" | |
| 70 print " *" | |
| 71 print " * on files with these headers:" | |
| 72 print " *" | |
| 73 for h in headers: | |
| 74 for l in h: | |
| 75 print " * %s" % (l.strip()) | |
| 76 print " */" | |
| 77 print | |
| 78 print '#include "hb-ot-shape-complex-indic-private.hh"' | |
| 79 print | |
| 80 | |
| 81 # Shorten values | |
| 82 short = [{ | |
| 83 "Bindu": 'Bi', | |
| 84 "Visarga": 'Vs', | |
| 85 "Vowel": 'Vo', | |
| 86 "Vowel_Dependent": 'M', | |
| 87 "Other": 'x', | |
| 88 },{ | |
| 89 "Not_Applicable": 'x', | |
| 90 }] | |
| 91 all_shorts = [[],[]] | |
| 92 | |
| 93 # Add some of the values, to make them more readable, and to avoid duplicates | |
| 94 | |
| 95 | |
| 96 for i in range (2): | |
| 97 for v,s in short[i].items (): | |
| 98 all_shorts[i].append (s) | |
| 99 | |
| 100 what = ["INDIC_SYLLABIC_CATEGORY", "INDIC_MATRA_CATEGORY"] | |
| 101 what_short = ["ISC", "IMC"] | |
| 102 for i in range (2): | |
| 103 print | |
| 104 vv = values[i].keys () | |
| 105 vv.sort () | |
| 106 for v in vv: | |
| 107 v_no_and = v.replace ('_And_', '_') | |
| 108 if v in short[i]: | |
| 109 s = short[i][v] | |
| 110 else: | |
| 111 s = ''.join ([c for c in v_no_and if ord ('A') <= ord (c) <= ord ('Z')]) | |
| 112 if s in all_shorts[i]: | |
| 113 raise Exception ("Duplicate short value alias", v, s) | |
| 114 all_shorts[i].append (s) | |
| 115 short[i][v] = s | |
| 116 print "#define %s_%s %s_%s %s/* %3d chars; %s */" % \ | |
| 117 (what_short[i], s, what[i], v.upper (), \ | |
| 118 ' '* ((48-1 - len (what[i]) - 1 - len (v)) / 8), \ | |
| 119 values[i][v], v) | |
| 120 print | |
| 121 print "#define _(S,M) INDIC_COMBINE_CATEGORIES (ISC_##S, IMC_##M)" | |
| 122 print | |
| 123 print | |
| 124 | |
| 125 total = 0 | |
| 126 used = 0 | |
| 127 def print_block (block, start, end, data): | |
| 128 print | |
| 129 print | |
| 130 print " /* %s (%04X..%04X) */" % (block, start, end) | |
| 131 num = 0 | |
| 132 for u in range (start, end+1): | |
| 133 if u % 8 == 0: | |
| 134 print | |
| 135 print " /* %04X */" % u, | |
| 136 if u in data: | |
| 137 num += 1 | |
| 138 d = data.get (u, defaults) | |
| 139 sys.stdout.write ("%9s" % ("_(%s,%s)," % (short[0][d[0]], short[1][d[1]]))) | |
| 140 | |
| 141 global total, used | |
| 142 total += end - start + 1 | |
| 143 used += num | |
| 144 | |
| 145 uu = data.keys () | |
| 146 uu.sort () | |
| 147 | |
| 148 last = -1 | |
| 149 num = 0 | |
| 150 offset = 0 | |
| 151 starts = [] | |
| 152 ends = [] | |
| 153 print "static const INDIC_TABLE_ELEMENT_TYPE indic_table[] = {" | |
| 154 for u in uu: | |
| 155 if u <= last: | |
| 156 continue | |
| 157 block = data[u][2] | |
| 158 (start, end) = blocks[block] | |
| 159 | |
| 160 if start != last + 1: | |
| 161 if start - last <= 33: | |
| 162 print_block ("FILLER", last+1, start-1, data) | |
| 163 last = start-1 | |
| 164 else: | |
| 165 if last >= 0: | |
| 166 ends.append (last + 1) | |
| 167 offset += ends[-1] - starts[-1] | |
| 168 print | |
| 169 print | |
| 170 print "#define indic_offset_0x%04x %d" % (start, offset) | |
| 171 starts.append (start) | |
| 172 | |
| 173 print_block (block, start, end, data) | |
| 174 last = end | |
| 175 ends.append (last + 1) | |
| 176 offset += ends[-1] - starts[-1] | |
| 177 print | |
| 178 print | |
| 179 print "#define indic_offset_total %d" % offset | |
| 180 print | |
| 181 occupancy = used * 100. / total | |
| 182 print "}; /* Table occupancy: %d%% */" % occupancy | |
| 183 print | |
| 184 print "INDIC_TABLE_ELEMENT_TYPE" | |
| 185 print "hb_indic_get_categories (hb_codepoint_t u)" | |
| 186 print "{" | |
| 187 for (start,end) in zip (starts, ends): | |
| 188 offset = "indic_offset_0x%04x" % start | |
| 189 print " if (0x%04X <= u && u <= 0x%04X) return indic_table[u - 0x%04X + %s];" % (start, end, start, offset) | |
| 190 for u,d in singles.items (): | |
| 191 print " if (unlikely (u == 0x%04X)) return _(%s,%s);" % (u, short[0][d[0]], short[1][d[1]]) | |
| 192 print " return _(x,x);" | |
| 193 print "}" | |
| 194 print | |
| 195 print "#undef _" | |
| 196 for i in range (2): | |
| 197 print | |
| 198 vv = values[i].keys () | |
| 199 vv.sort () | |
| 200 for v in vv: | |
| 201 print "#undef %s_%s" % \ | |
| 202 (what_short[i], short[i][v]) | |
| 203 print | |
| 204 print "/* == End of generated table == */" | |
| 205 | |
| 206 # Maintain at least 30% occupancy in the table */ | |
| 207 if occupancy < 30: | |
| 208 raise Exception ("Table too sparse, please investigate: ", occupancy) |
