Add Harfbuzz to third_party and Skia support for such.

Harfbuzz is an open source library which is a unification of the Qt
and Pango shaping engines. We'll be using it on Chromium Linux to
perform complex text shaping.

Additionally, we add support for Harfbuzz into Skia, guarded by
SKIA_HARFBUZZ.

http://codereview.chromium.org/63035/show


git-svn-id: svn://svn.chromium.org/chrome/trunk/src@13214 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 34 insertions, 0 deletions

diff --git a/third_party/harfbuzz/contrib/tables/combining-class-parse.py b/third_party/harfbuzz/contrib/tables/combining-class-parse.py
new file mode 100644
index 0000000..c591ddd
--- /dev/null
+++ b/third_party/harfbuzz/contrib/tables/combining-class-parse.py
@@ -0,0 +1,34 @@
+import sys
+from unicode_parse_common import *
+
+# http://www.unicode.org/Public/5.1.0/ucd/extracted/DerivedCombiningClass.txt
+
+class IdentityMap(object):
+  def __getitem__(_, key):
+    return key
+
+def main(infile, outfile):
+  ranges = unicode_file_parse(infile, IdentityMap(), '0')
+  ranges = sort_and_merge(ranges)
+
+  print >>outfile, '// Generated from Unicode tables\n'
+  print >>outfile, '#ifndef COMBINING_PROPERTIES_H_'
+  print >>outfile, '#define COMBINING_PROPERTIES_H_\n'
+  print >>outfile, '#include <stdint.h>'
+  print >>outfile, 'struct combining_property {'
+  print >>outfile, '  uint32_t range_start;'
+  print >>outfile, '  uint32_t range_end;'
+  print >>outfile, '  uint8_t klass;'
+  print >>outfile, '};\n'
+  print >>outfile, 'static const struct combining_property combining_properties[] = {'
+  for (start, end, value) in ranges:
+    print >>outfile, '  {0x%x, 0x%x, %s},' % (start, end, value)
+  print >>outfile, '};\n'
+  print >>outfile, 'static const unsigned combining_properties_count = %d;\n' % len(ranges)
+  print >>outfile, '#endif  // COMBINING_PROPERTIES_H_'
+
+if __name__ == '__main__':
+  if len(sys.argv) != 3:
+    print 'Usage: %s <input .txt> <output .h>' % sys.argv[0]
+  else:
+    main(file(sys.argv[1], 'r'), file(sys.argv[2], 'w+'))