diff options
Diffstat (limited to 'Build/source/libs/harfbuzz/harfbuzz-src/src/gen-vowel-constraints.py')
| -rw-r--r-- | Build/source/libs/harfbuzz/harfbuzz-src/src/gen-vowel-constraints.py | 46 |
1 files changed, 26 insertions, 20 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-src/src/gen-vowel-constraints.py b/Build/source/libs/harfbuzz/harfbuzz-src/src/gen-vowel-constraints.py index 8ca90c819cb..0a0337f27e5 100644 --- a/Build/source/libs/harfbuzz/harfbuzz-src/src/gen-vowel-constraints.py +++ b/Build/source/libs/harfbuzz/harfbuzz-src/src/gen-vowel-constraints.py @@ -1,4 +1,4 @@ -#!/usr/bin/python +#!/usr/bin/env python3 """Generator of the function to prohibit certain vowel sequences. @@ -6,26 +6,23 @@ It creates ``_hb_preprocess_text_vowel_constraints``, which inserts dotted circles into sequences prohibited by the USE script development spec. This function should be used as the ``preprocess_text`` of an ``hb_ot_complex_shaper_t``. -""" -from __future__ import absolute_import, division, print_function, unicode_literals +""" import collections -try: - from HTMLParser import HTMLParser - def write (s): - print (s.encode ('utf-8'), end='') -except ImportError: - from html.parser import HTMLParser - def write (s): - sys.stdout.flush () - sys.stdout.buffer.write (s.encode ('utf-8')) +from html.parser import HTMLParser +def write (s): + sys.stdout.flush () + sys.stdout.buffer.write (s.encode ('utf-8')) import itertools import io import sys if len (sys.argv) != 3: - print ('usage: ./gen-vowel-constraints.py HBIndicVowelConstraints.txt Scripts.txt', file=sys.stderr) + print ("""usage: ./gen-vowel-constraints.py ms-use/IndicShapingInvalidCluster.txt Scripts.txt + +Input file, as of Unicode 12: +* https://unicode.org/Public/UCD/latest/ucd/Scripts.txt""", file=sys.stderr) sys.exit (1) with io.open (sys.argv[2], encoding='utf-8') as f: @@ -84,7 +81,8 @@ class ConstraintSet (object): else: self._c[first] = ConstraintSet (rest) - def _indent (self, depth): + @staticmethod + def _indent (depth): return (' ' * depth).replace (' ', '\t') def __str__ (self, index=0, depth=4): @@ -92,17 +90,20 @@ class ConstraintSet (object): indent = self._indent (depth) if isinstance (self._c, list): if len (self._c) == 0: + assert index == 2, 'Cannot use `matched` for this constraint; the general case has not been implemented' s.append ('{}matched = true;\n'.format (indent)) elif len (self._c) == 1: + assert index == 1, 'Cannot use `matched` for this constraint; the general case has not been implemented' s.append ('{}matched = 0x{:04X}u == buffer->cur ({}).codepoint;\n'.format (indent, next (iter (self._c)), index or '')) else: - s.append ('{}if (0x{:04X}u == buffer->cur ({}).codepoint &&\n'.format (indent, self._c[0], index)) - s.append ('{}buffer->idx + {} < count &&\n'.format (self._indent (depth + 2), len (self._c))) + s.append ('{}if (0x{:04X}u == buffer->cur ({}).codepoint &&\n'.format (indent, self._c[0], index or '')) + if index: + s.append ('{}buffer->idx + {} < count &&\n'.format (self._indent (depth + 2), index + 1)) for i, cp in enumerate (self._c[1:], start=1): s.append ('{}0x{:04X}u == buffer->cur ({}).codepoint{}\n'.format ( self._indent (depth + 2), cp, index + i, ')' if i == len (self._c) - 1 else ' &&')) s.append ('{}{{\n'.format (indent)) - for i in range (len (self._c)): + for i in range (index + 1): s.append ('{}buffer->next_glyph ();\n'.format (self._indent (depth + 1))) s.append ('{}_output_dotted_circle (buffer);\n'.format (self._indent (depth + 1))) s.append ('{}}}\n'.format (indent)) @@ -128,7 +129,12 @@ class ConstraintSet (object): constraints = {} with io.open (sys.argv[1], encoding='utf-8') as f: - constraints_header = [f.readline ().strip () for i in range (2)] + constraints_header = [] + while True: + line = f.readline ().strip () + if line == '#': + break + constraints_header.append(line) for line in f: j = line.find ('#') if j >= 0: @@ -147,7 +153,7 @@ print ('/* == Start of generated functions == */') print ('/*') print (' * The following functions are generated by running:') print (' *') -print (' * %s use Scripts.txt' % sys.argv[0]) +print (' * %s ms-use/IndicShapingInvalidCluster.txt Scripts.txt' % sys.argv[0]) print (' *') print (' * on files with these headers:') print (' *') @@ -185,7 +191,7 @@ print ('_hb_preprocess_text_vowel_constraints (const hb_ot_shape_plan_t *plan HB print ('\t\t\t\t hb_buffer_t *buffer,') print ('\t\t\t\t hb_font_t *font HB_UNUSED)') print ('{') -print ('#if defined(HB_NO_OT_SHAPE_COMPLEX_VOWEL_CONSTRAINTS)') +print ('#ifdef HB_NO_OT_SHAPE_COMPLEX_VOWEL_CONSTRAINTS') print (' return;') print ('#endif') print (' if (buffer->flags & HB_BUFFER_FLAG_DO_NOT_INSERT_DOTTED_CIRCLE)') |