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-rwxr-xr-xBuild/source/libs/harfbuzz/harfbuzz-0.9.11/src/gen-arabic-table.py197
1 files changed, 197 insertions, 0 deletions
diff --git a/Build/source/libs/harfbuzz/harfbuzz-0.9.11/src/gen-arabic-table.py b/Build/source/libs/harfbuzz/harfbuzz-0.9.11/src/gen-arabic-table.py
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+++ b/Build/source/libs/harfbuzz/harfbuzz-0.9.11/src/gen-arabic-table.py
@@ -0,0 +1,197 @@
+#!/usr/bin/python
+
+import sys
+import os.path
+
+if len (sys.argv) != 3:
+ print >>sys.stderr, "usage: ./gen-arabic-table.py ArabicShaping.txt UnicodeData.txt"
+ sys.exit (1)
+
+files = [file (x) for x in sys.argv[1:]]
+
+headers = [[files[0].readline (), files[0].readline ()]]
+headers.append (["UnicodeData.txt does not have a header."])
+while files[0].readline ().find ('##################') < 0:
+ pass
+
+
+def print_joining_table(f):
+
+ print
+ print "static const uint8_t joining_table[] ="
+ print "{"
+
+ min_u = 0x110000
+ max_u = 0
+ num = 0
+ last = -1
+ block = ''
+ for line in f:
+
+ if line[0] == '#':
+ if line.find (" characters"):
+ block = line[2:].strip ()
+ continue
+
+ fields = [x.strip () for x in line.split (';')]
+ if len (fields) == 1:
+ continue
+
+ u = int (fields[0], 16)
+ if u == 0x200C or u == 0x200D:
+ continue
+ if u < last:
+ raise Exception ("Input data character not sorted", u)
+ min_u = min (min_u, u)
+ max_u = max (max_u, u)
+ num += 1
+
+ if block:
+ print "\n /* %s */\n" % block
+ block = ''
+
+ if last != -1:
+ last += 1
+ while last < u:
+ print " JOINING_TYPE_X, /* %04X */" % last
+ last += 1
+ else:
+ last = u
+
+ if fields[3] in ["ALAPH", "DALATH RISH"]:
+ value = "JOINING_GROUP_" + fields[3].replace(' ', '_')
+ else:
+ value = "JOINING_TYPE_" + fields[2]
+ print " %s, /* %s */" % (value, '; '.join(fields))
+
+ print
+ print "};"
+ print
+ print "#define JOINING_TABLE_FIRST 0x%04X" % min_u
+ print "#define JOINING_TABLE_LAST 0x%04X" % max_u
+ print
+
+ occupancy = num * 100 / (max_u - min_u + 1)
+ # Maintain at least 40% occupancy in the table */
+ if occupancy < 40:
+ raise Exception ("Table too sparse, please investigate: ", occupancy)
+
+def print_shaping_table(f):
+
+ shapes = {}
+ ligatures = {}
+ names = {}
+ for line in f:
+
+ fields = [x.strip () for x in line.split (';')]
+ if fields[5][0:1] != '<':
+ continue
+
+ items = fields[5].split (' ')
+ shape, items = items[0][1:-1], tuple (int (x, 16) for x in items[1:])
+
+ if not shape in ['initial', 'medial', 'isolated', 'final']:
+ continue
+
+ c = int (fields[0], 16)
+ if len (items) != 1:
+ # We only care about lam-alef ligatures
+ if len (items) != 2 or items[0] != 0x0644 or items[1] not in [0x0622, 0x0623, 0x0625, 0x0627]:
+ continue
+
+ # Save ligature
+ names[c] = fields[1]
+ if items not in ligatures:
+ ligatures[items] = {}
+ ligatures[items][shape] = c
+ pass
+ else:
+ # Save shape
+ if items[0] not in names:
+ names[items[0]] = fields[1]
+ else:
+ names[items[0]] = os.path.commonprefix ([names[items[0]], fields[1]]).strip ()
+ if items[0] not in shapes:
+ shapes[items[0]] = {}
+ shapes[items[0]][shape] = c
+
+ print
+ print "static const uint16_t shaping_table[][4] ="
+ print "{"
+
+ keys = shapes.keys ()
+ min_u, max_u = min (keys), max (keys)
+ for u in range (min_u, max_u + 1):
+ s = [shapes[u][shape] if u in shapes and shape in shapes[u] else 0
+ for shape in ['initial', 'medial', 'final', 'isolated']]
+ value = ', '.join ("0x%04X" % c for c in s)
+ print " {%s}, /* U+%04X %s */" % (value, u, names[u] if u in names else "")
+
+ print "};"
+ print
+ print "#define SHAPING_TABLE_FIRST 0x%04X" % min_u
+ print "#define SHAPING_TABLE_LAST 0x%04X" % max_u
+ print
+
+ ligas = {}
+ for pair in ligatures.keys ():
+ for shape in ligatures[pair]:
+ c = ligatures[pair][shape]
+ if shape == 'isolated':
+ liga = (shapes[pair[0]]['initial'], shapes[pair[1]]['final'])
+ elif shape == 'final':
+ liga = (shapes[pair[0]]['medial'], shapes[pair[1]]['final'])
+ else:
+ raise Exception ("Unexpected shape", shape)
+ if liga[0] not in ligas:
+ ligas[liga[0]] = []
+ ligas[liga[0]].append ((liga[1], c))
+ max_i = max (len (ligas[l]) for l in ligas)
+ print
+ print "static const struct ligature_set_t {"
+ print " uint16_t first;"
+ print " struct ligature_pairs_t {"
+ print " uint16_t second;"
+ print " uint16_t ligature;"
+ print " } ligatures[%d];" % max_i
+ print "} ligature_table[] ="
+ print "{"
+ keys = ligas.keys ()
+ keys.sort ()
+ for first in keys:
+
+ print " { 0x%04X, {" % (first)
+ for liga in ligas[first]:
+ print " { 0x%04X, 0x%04X }, /* %s */" % (liga[0], liga[1], names[liga[1]])
+ print " }},"
+
+ print "};"
+ print
+
+
+
+print "/* == Start of generated table == */"
+print "/*"
+print " * The following table is generated by running:"
+print " *"
+print " * ./gen-arabic-table.py ArabicShaping.txt UnicodeData.txt"
+print " *"
+print " * on files with these headers:"
+print " *"
+for h in headers:
+ for l in h:
+ print " * %s" % (l.strip())
+print " */"
+print
+print "#ifndef HB_OT_SHAPE_COMPLEX_ARABIC_TABLE_HH"
+print "#define HB_OT_SHAPE_COMPLEX_ARABIC_TABLE_HH"
+print
+
+print_joining_table (files[0])
+print_shaping_table (files[1])
+
+print
+print "#endif /* HB_OT_SHAPE_COMPLEX_ARABIC_TABLE_HH */"
+print
+print "/* == End of generated table == */"
+