209 lines
4.7 KiB
Python
Executable File
209 lines
4.7 KiB
Python
Executable File
#!/usr/bin/python
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import sys
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if len (sys.argv) != 4:
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print >>sys.stderr, "usage: ./gen-indic-table.py IndicSyllabicCategory.txt IndicMatraCategory.txt Blocks.txt"
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sys.exit (1)
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files = [file (x) for x in sys.argv[1:]]
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headers = [[f.readline () for i in range (2)] for f in files]
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blocks = {}
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data = [{} for f in files]
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values = [{} for f in files]
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for i, f in enumerate (files):
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for line in f:
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j = line.find ('#')
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if j >= 0:
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line = line[:j]
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fields = [x.strip () for x in line.split (';')]
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if len (fields) == 1:
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continue
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uu = fields[0].split ('..')
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start = int (uu[0], 16)
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if len (uu) == 1:
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end = start
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else:
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end = int (uu[1], 16)
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t = fields[1]
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for u in range (start, end + 1):
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data[i][u] = t
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values[i][t] = values[i].get (t, 0) + 1
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if i == 2:
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blocks[t] = (start, end)
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# Merge data into one dict:
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defaults = ('Other', 'Not_Applicable', 'No_Block')
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for i,v in enumerate (defaults):
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values[i][v] = values[i].get (v, 0) + 1
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combined = {}
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for i,d in enumerate (data):
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for u,v in d.items ():
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if i == 2 and not u in combined:
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continue
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if not u in combined:
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combined[u] = list (defaults)
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combined[u][i] = v
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data = combined
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del combined
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num = len (data)
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# Move the outliers NO-BREAK SPACE and DOTTED CIRCLE out
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singles = {}
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for u in [0x00A0, 0x25CC]:
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singles[u] = data[u]
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del data[u]
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print "/* == Start of generated table == */"
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print "/*"
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print " * The following table is generated by running:"
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print " *"
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print " * ./gen-indic-table.py IndicSyllabicCategory.txt IndicMatraCategory.txt Blocks.txt"
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print " *"
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print " * on files with these headers:"
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print " *"
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for h in headers:
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for l in h:
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print " * %s" % (l.strip())
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print " */"
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print
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print '#include "hb-ot-shape-complex-indic-private.hh"'
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print
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# Shorten values
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short = [{
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"Bindu": 'Bi',
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"Visarga": 'Vs',
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"Vowel": 'Vo',
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"Vowel_Dependent": 'M',
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"Other": 'x',
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},{
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"Not_Applicable": 'x',
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}]
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all_shorts = [[],[]]
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# Add some of the values, to make them more readable, and to avoid duplicates
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for i in range (2):
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for v,s in short[i].items ():
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all_shorts[i].append (s)
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what = ["INDIC_SYLLABIC_CATEGORY", "INDIC_MATRA_CATEGORY"]
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what_short = ["ISC", "IMC"]
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for i in range (2):
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print
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vv = values[i].keys ()
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vv.sort ()
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for v in vv:
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v_no_and = v.replace ('_And_', '_')
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if v in short[i]:
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s = short[i][v]
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else:
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s = ''.join ([c for c in v_no_and if ord ('A') <= ord (c) <= ord ('Z')])
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if s in all_shorts[i]:
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raise Exception ("Duplicate short value alias", v, s)
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all_shorts[i].append (s)
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short[i][v] = s
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print "#define %s_%s %s_%s %s/* %3d chars; %s */" % \
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(what_short[i], s, what[i], v.upper (), \
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' '* ((48-1 - len (what[i]) - 1 - len (v)) / 8), \
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values[i][v], v)
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print
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print "#define _(S,M) INDIC_COMBINE_CATEGORIES (ISC_##S, IMC_##M)"
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print
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print
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total = 0
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used = 0
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def print_block (block, start, end, data):
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print
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print
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print " /* %s (%04X..%04X) */" % (block, start, end)
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num = 0
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for u in range (start, end+1):
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if u % 8 == 0:
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print
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print " /* %04X */" % u,
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if u in data:
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num += 1
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d = data.get (u, defaults)
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sys.stdout.write ("%9s" % ("_(%s,%s)," % (short[0][d[0]], short[1][d[1]])))
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global total, used
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total += end - start + 1
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used += num
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uu = data.keys ()
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uu.sort ()
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last = -1
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num = 0
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offset = 0
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starts = []
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ends = []
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print "static const INDIC_TABLE_ELEMENT_TYPE indic_table[] = {"
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for u in uu:
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if u <= last:
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continue
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block = data[u][2]
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(start, end) = blocks[block]
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if start != last + 1:
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if start - last <= 33:
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print_block ("FILLER", last+1, start-1, data)
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last = start-1
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else:
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if last >= 0:
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ends.append (last + 1)
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offset += ends[-1] - starts[-1]
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print
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print
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print "#define indic_offset_0x%04x %d" % (start, offset)
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starts.append (start)
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print_block (block, start, end, data)
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last = end
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ends.append (last + 1)
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offset += ends[-1] - starts[-1]
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print
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print
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print "#define indic_offset_total %d" % offset
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print
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occupancy = used * 100. / total
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print "}; /* Table occupancy: %d%% */" % occupancy
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print
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print "INDIC_TABLE_ELEMENT_TYPE"
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print "hb_indic_get_categories (hb_codepoint_t u)"
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print "{"
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for (start,end) in zip (starts, ends):
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offset = "indic_offset_0x%04x" % start
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print " if (0x%04X <= u && u <= 0x%04X) return indic_table[u - 0x%04X + %s];" % (start, end, start, offset)
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for u,d in singles.items ():
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print " if (unlikely (u == 0x%04X)) return _(%s,%s);" % (u, short[0][d[0]], short[1][d[1]])
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print " return _(x,x);"
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print "}"
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print
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print "#undef _"
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for i in range (2):
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print
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vv = values[i].keys ()
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vv.sort ()
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for v in vv:
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print "#undef %s_%s" % \
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(what_short[i], short[i][v])
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print
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print "/* == End of generated table == */"
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# Maintain at least 30% occupancy in the table */
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if occupancy < 30:
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raise Exception ("Table too sparse, please investigate: ", occupancy)
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