mirror of
https://github.com/kovidgoyal/calibre.git
synced 2025-07-09 03:04:10 -04:00
sfntly working on linux 64bit
This commit is contained in:
parent
d51de87c61
commit
d4854e20ec
@ -19,6 +19,7 @@ from setup.build_environment import (chmlib_inc_dirs,
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magick_libs, chmlib_lib_dirs, sqlite_inc_dirs, icu_inc_dirs,
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icu_lib_dirs, win_ddk_lib_dirs, ft_libs, ft_lib_dirs, ft_inc_dirs,
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zlib_libs, zlib_lib_dirs, zlib_inc_dirs)
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from setup.sfntly import SfntlyBuilderMixin
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MT
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isunix = islinux or isosx or isbsd
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@ -48,6 +49,9 @@ class Extension(object):
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self.optional = kwargs.get('optional', False)
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self.needs_ddk = kwargs.get('needs_ddk', False)
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def preflight(self, obj_dir, compiler, linker, builder, cflags, ldflags):
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pass
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reflow_sources = glob.glob(os.path.join(SRC, 'calibre', 'ebooks', 'pdf', '*.cpp'))
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reflow_headers = glob.glob(os.path.join(SRC, 'calibre', 'ebooks', 'pdf', '*.h'))
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@ -59,9 +63,26 @@ if isosx:
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icu_libs = ['icucore']
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icu_cflags = ['-DU_DISABLE_RENAMING'] # Needed to use system libicucore.dylib
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class SfntlyExtension(Extension, SfntlyBuilderMixin):
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def __init__(self, *args, **kwargs):
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Extension.__init__(self, *args, **kwargs)
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SfntlyBuilderMixin.__init__(self)
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def preflight(self, *args, **kwargs):
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self(*args, **kwargs)
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extensions = [
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SfntlyExtension('sfntly',
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['calibre/utils/fonts/sfntly.cpp'],
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headers= ['calibre/utils/fonts/sfntly.h'],
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libraries=icu_libs,
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lib_dirs=icu_lib_dirs,
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inc_dirs=icu_inc_dirs,
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cflags=icu_cflags
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),
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Extension('speedup',
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['calibre/utils/speedup.c'],
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),
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@ -363,8 +384,9 @@ class Build(Command):
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compiler = cxx if ext.needs_cxx else cc
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linker = msvc.linker if iswindows else compiler
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objects = []
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einc = self.inc_dirs_to_cflags(ext.inc_dirs)
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obj_dir = self.j(self.obj_dir, ext.name)
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ext.preflight(obj_dir, compiler, linker, self, cflags, ldflags)
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einc = self.inc_dirs_to_cflags(ext.inc_dirs)
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if ext.needs_ddk:
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ddk_flags = ['-I'+x for x in win_ddk]
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cflags.extend(ddk_flags)
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@ -385,7 +407,7 @@ class Build(Command):
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dest = self.dest(ext)
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elib = self.lib_dirs_to_ldflags(ext.lib_dirs)
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xlib = self.libraries_to_ldflags(ext.libraries)
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if self.newer(dest, objects):
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if self.newer(dest, objects+ext.extra_objs):
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print 'Linking', ext.name
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cmd = [linker]
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if iswindows:
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84
setup/sfntly.py
Normal file
84
setup/sfntly.py
Normal file
@ -0,0 +1,84 @@
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#!/usr/bin/env python
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# vim:fileencoding=UTF-8:ts=4:sw=4:sta:et:sts=4:fdm=marker:ai
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from __future__ import (unicode_literals, division, absolute_import,
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print_function)
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__license__ = 'GPL v3'
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__copyright__ = '2012, Kovid Goyal <kovid at kovidgoyal.net>'
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__docformat__ = 'restructuredtext en'
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import shlex, os
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from glob import glob
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from setup import iswindows
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class Group(object):
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def __init__(self, name, base, build_base, cflags):
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self.name = name
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self.cflags = cflags
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self.headers = frozenset(glob(os.path.join(base, '*.h')))
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self.src_files = glob(os.path.join(base, '*.cc'))
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self.bdir = os.path.abspath(os.path.join(build_base, name))
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if not os.path.exists(self.bdir):
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os.makedirs(self.bdir)
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self.objects = [os.path.join(self.bdir,
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os.path.basename(x).rpartition('.')[0] + ('.obj' if iswindows else
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'.o')) for x in self.src_files]
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def __call__(self, compiler, linker, builder, all_headers):
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for src, obj in zip(self.src_files, self.objects):
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if builder.newer(obj, [src] + list(all_headers)):
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sinc = ['/Tp'+src] if iswindows else ['-c', src]
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oinc = ['/Fo'+obj] if iswindows else ['-o', obj]
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cmd = [compiler] + self.cflags + sinc + oinc
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builder.info(' '.join(cmd))
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builder.check_call(cmd)
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class SfntlyBuilderMixin(object):
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def __init__(self):
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self.sfntly_cflags = [
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'-DSFNTLY_NO_EXCEPTION',
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'-DSFNTLY_EXPERIMENTAL',
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]
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if iswindows:
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self.sfntly_cflags += [
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'-D_UNICODE', '-DUNICODE',
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] + shlex.split('/Zi /nologo /W4 /WX /O2 /Ob2 /Oy /GF /Gm- /MT /GS /Gy '
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'/fp:precise /Zc:wchar_t /Zc:forScope /GR-')
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else:
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self.sfntly_cflags += [
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'-Werror',
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'-fno-exceptions',
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]
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if len(self.libraries) > 1:
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self.libraries = ['icuuc']
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if not iswindows:
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self.libraries += ['pthread']
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def __call__(self, obj_dir, compiler, linker, builder, cflags, ldflags):
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self.sfntly_build_dir = os.path.join(obj_dir, 'sfntly')
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groups = []
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all_headers = set()
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all_objects = []
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src_dir = self.absolutize([os.path.join('sfntly', 'src')])[0]
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inc_dirs = [src_dir]
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self.inc_dirs += inc_dirs
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inc_flags = builder.inc_dirs_to_cflags(inc_dirs)
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for loc in ('', 'port', 'data', 'math', 'table', 'table/bitmap',
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'table/core', 'table/truetype'):
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path = os.path.join(src_dir, 'sfntly', *loc.split('/'))
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gr = Group(loc, path, self.sfntly_build_dir, cflags+
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inc_flags+self.sfntly_cflags+self.cflags)
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groups.append(gr)
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all_headers |= gr.headers
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all_objects.extend(gr.objects)
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for group in groups:
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group(compiler, linker, builder, all_headers)
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self.extra_objs = all_objects
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@ -90,6 +90,7 @@ class Plugins(collections.Mapping):
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'speedup',
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'freetype',
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'woff',
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'sfntly',
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]
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if iswindows:
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plugins.extend(['winutil', 'wpd', 'winfonts'])
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@ -19,6 +19,8 @@ Run an embedded python interpreter.
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''')
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parser.add_option('-c', '--command', help='Run python code.', default=None)
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parser.add_option('-e', '--exec-file', default=None, help='Run the python code in file.')
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parser.add_option('-f', '--subset-font', default=False,
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action='store_true', help='Subset the specified font')
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parser.add_option('-d', '--debug-device-driver', default=False, action='store_true',
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help='Debug the specified device driver.')
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parser.add_option('-g', '--gui', default=False, action='store_true',
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@ -209,6 +211,11 @@ def main(args=sys.argv):
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execfile(ef, g)
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return
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if len(args) > 1 and args[1] in ('-f', '--subset-font'):
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from calibre.utils.fonts.subset import main
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main(['subset-font']+args[2:])
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return
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opts, args = option_parser().parse_args(args)
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if opts.gui:
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from calibre.gui2.main import main
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606
src/calibre/utils/fonts/sfntly.cpp
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606
src/calibre/utils/fonts/sfntly.cpp
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@ -0,0 +1,606 @@
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/*
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* sfntly.cpp
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* Copyright (C) 2012 Kovid Goyal <kovid at kovidgoyal.net>
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*
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* Distributed under terms of the GPL3 license.
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*/
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#define _UNICODE
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#define UNICODE
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#define PY_SSIZE_T_CLEAN
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#include <Python.h>
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#include "sfntly.h"
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#include <new>
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#include <sfntly/port/memory_input_stream.h>
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#include <sfntly/port/memory_output_stream.h>
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static PyObject *Error = NULL;
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static PyObject *NoGlyphs = NULL;
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// Predicates {{{
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CompositePredicate::CompositePredicate(IntegerSet &chars, IntegerList &ranges) :
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chars(chars), ranges(ranges) {}
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CompositePredicate::~CompositePredicate() {}
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bool CompositePredicate::operator()(int32_t character) const {
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for (size_t i = 0; i < ranges.size()/2; i++) {
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if (ranges[2*i] <= character && character <= ranges[2*i+1]) return true;
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}
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return chars.count(character) > 0;
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}
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// }}}
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// Font Info {{{
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GlyphId::GlyphId(int32_t glyph_id, FontId font_id) : glyph_id_(glyph_id), font_id_(font_id) {}
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GlyphId::~GlyphId() {}
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bool GlyphId::operator==(const GlyphId& other) const { return glyph_id_ == other.glyph_id(); }
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bool GlyphId::operator<(const GlyphId& other) const { return glyph_id_ < other.glyph_id(); }
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int32_t GlyphId::glyph_id() const { return glyph_id_; }
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void GlyphId::set_glyph_id(const int32_t glyph_id) { glyph_id_ = glyph_id; }
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FontId GlyphId::font_id() const { return font_id_; }
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void GlyphId::set_font_id(const FontId font_id) { font_id_ = font_id; }
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FontInfo::FontInfo() : chars_to_glyph_ids_(new CharacterMap),
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resolved_glyph_ids_(new GlyphIdSet), fonts_(new FontIdMap) { }
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FontInfo::FontInfo(CharacterMap* chars_to_glyph_ids,
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GlyphIdSet* resolved_glyph_ids,
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FontIdMap* fonts) {
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chars_to_glyph_ids_ = new CharacterMap(chars_to_glyph_ids->begin(),
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chars_to_glyph_ids->end());
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resolved_glyph_ids_ = new GlyphIdSet(resolved_glyph_ids->begin(),
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resolved_glyph_ids->end());
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fonts_ = new FontIdMap(fonts->begin(), fonts->end());
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}
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FontInfo::~FontInfo() {
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delete chars_to_glyph_ids_;
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delete resolved_glyph_ids_;
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delete fonts_;
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}
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FontDataTable* FontInfo::GetTable(FontId font_id, int32_t tag) {
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if (!fonts_)
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return NULL;
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FontIdMap::iterator it = fonts_->find(font_id);
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if (it == fonts_->end())
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return NULL;
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return it->second->GetTable(tag);
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}
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const TableMap* FontInfo::GetTableMap(FontId font_id) {
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if (!fonts_)
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return NULL;
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FontIdMap::iterator it = fonts_->find(font_id);
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if (it == fonts_->end())
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return NULL;
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return it->second->GetTableMap();
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}
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CharacterMap* FontInfo::chars_to_glyph_ids() const { return chars_to_glyph_ids_; }
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void FontInfo::set_chars_to_glyph_ids(CharacterMap* chars_to_glyph_ids) { *chars_to_glyph_ids_ = *chars_to_glyph_ids; }
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GlyphIdSet* FontInfo::resolved_glyph_ids() const { return resolved_glyph_ids_; }
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void FontInfo::set_resolved_glyph_ids(GlyphIdSet* resolved_glyph_ids) { *resolved_glyph_ids_ = *resolved_glyph_ids; }
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FontIdMap* FontInfo::fonts() const { return fonts_; }
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void FontInfo::set_fonts(FontIdMap* fonts) { *fonts_ = *fonts; }
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FontSourcedInfoBuilder::FontSourcedInfoBuilder(Font* font, FontId font_id) : font_(font), font_id_(font_id),
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predicate_(NULL) { Initialize(); }
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FontSourcedInfoBuilder::FontSourcedInfoBuilder(Font* font,
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FontId font_id,
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CharacterPredicate* predicate) :
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font_(font), font_id_(font_id), predicate_(predicate) { Initialize(); }
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FontSourcedInfoBuilder::~FontSourcedInfoBuilder() { }
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CALLER_ATTACH FontInfo* FontSourcedInfoBuilder::GetFontInfo() {
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CharacterMap* chars_to_glyph_ids = new CharacterMap;
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bool success = GetCharacterMap(chars_to_glyph_ids);
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if (!success) {
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delete chars_to_glyph_ids;
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PyErr_SetString(Error, "Error creating character map.\n");
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return NULL;
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}
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GlyphIdSet* resolved_glyph_ids = new GlyphIdSet;
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success = ResolveCompositeGlyphs(chars_to_glyph_ids, resolved_glyph_ids);
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if (!success) {
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delete chars_to_glyph_ids;
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delete resolved_glyph_ids;
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PyErr_SetString(Error, "Error resolving composite glyphs.\n");
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return NULL;
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}
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Ptr<FontInfo> font_info = new FontInfo;
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font_info->set_chars_to_glyph_ids(chars_to_glyph_ids);
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font_info->set_resolved_glyph_ids(resolved_glyph_ids);
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FontIdMap* font_id_map = new FontIdMap;
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font_id_map->insert(std::make_pair(font_id_, font_));
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font_info->set_fonts(font_id_map);
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delete chars_to_glyph_ids;
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delete resolved_glyph_ids;
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delete font_id_map;
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return font_info.Detach();
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}
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bool FontSourcedInfoBuilder::GetCharacterMap(CharacterMap* chars_to_glyph_ids) {
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if (!cmap_ || !chars_to_glyph_ids)
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return false;
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chars_to_glyph_ids->clear();
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CMapTable::CMap::CharacterIterator* character_iterator = cmap_->Iterator();
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if (!character_iterator)
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return false;
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while (character_iterator->HasNext()) {
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int32_t character = character_iterator->Next();
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if (!predicate_ || (*predicate_)(character)) {
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chars_to_glyph_ids->insert
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(std::make_pair(character,
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GlyphId(cmap_->GlyphId(character), font_id_)));
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}
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}
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delete character_iterator;
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return true;
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}
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bool FontSourcedInfoBuilder::ResolveCompositeGlyphs(CharacterMap* chars_to_glyph_ids,
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GlyphIdSet* resolved_glyph_ids) {
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if (!chars_to_glyph_ids || !resolved_glyph_ids)
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return false;
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resolved_glyph_ids->clear();
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resolved_glyph_ids->insert(GlyphId(0, font_id_));
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IntegerSet* unresolved_glyph_ids = new IntegerSet;
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// Since composite glyph elements might themselves be composite, we would need
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// to recursively resolve the elements too. To avoid the recursion we
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// create two sets, |unresolved_glyph_ids| for the unresolved glyphs,
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// initially containing all the ids and |resolved_glyph_ids|, initially empty.
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// We'll remove glyph ids from |unresolved_glyph_ids| until it is empty and,
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// if the glyph is composite, add its elements to the unresolved set.
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for (CharacterMap::iterator it = chars_to_glyph_ids->begin(),
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e = chars_to_glyph_ids->end(); it != e; ++it) {
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unresolved_glyph_ids->insert(it->second.glyph_id());
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}
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// As long as there are unresolved glyph ids.
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while (!unresolved_glyph_ids->empty()) {
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// Get the corresponding glyph.
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int32_t glyph_id = *(unresolved_glyph_ids->begin());
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unresolved_glyph_ids->erase(unresolved_glyph_ids->begin());
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if (glyph_id < 0 || glyph_id > loca_table_->num_glyphs()) {
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continue;
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}
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int32_t length = loca_table_->GlyphLength(glyph_id);
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if (length == 0) {
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continue;
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}
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int32_t offset = loca_table_->GlyphOffset(glyph_id);
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GlyphPtr glyph;
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glyph.Attach(glyph_table_->GetGlyph(offset, length));
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if (glyph == NULL) {
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continue;
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}
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// Mark the glyph as resolved.
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resolved_glyph_ids->insert(GlyphId(glyph_id, font_id_));
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// If it is composite, add all its components to the unresolved glyph set.
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if (glyph->GlyphType() == GlyphType::kComposite) {
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Ptr<GlyphTable::CompositeGlyph> composite_glyph =
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down_cast<GlyphTable::CompositeGlyph*>(glyph.p_);
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int32_t num_glyphs = composite_glyph->NumGlyphs();
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for (int32_t i = 0; i < num_glyphs; ++i) {
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int32_t glyph_id = composite_glyph->GlyphIndex(i);
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if (resolved_glyph_ids->find(GlyphId(glyph_id, -1))
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== resolved_glyph_ids->end()) {
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unresolved_glyph_ids->insert(glyph_id);
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}
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}
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}
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}
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delete unresolved_glyph_ids;
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return true;
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}
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void FontSourcedInfoBuilder::Initialize() {
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Ptr<CMapTable> cmap_table = down_cast<CMapTable*>(font_->GetTable(Tag::cmap));
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// We prefer Windows BMP format 4 cmaps.
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cmap_.Attach(cmap_table->GetCMap(CMapTable::WINDOWS_BMP));
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// But if none is found,
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if (!cmap_) {
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return;
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}
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loca_table_ = down_cast<LocaTable*>(font_->GetTable(Tag::loca));
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glyph_table_ = down_cast<GlyphTable*>(font_->GetTable(Tag::glyf));
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}
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// }}}
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// Font Assembler {{{
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FontAssembler::FontAssembler(FontInfo* font_info, IntegerSet* table_blacklist) :
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table_blacklist_(table_blacklist) {
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font_info_ = font_info;
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Initialize();
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}
|
||||
|
||||
FontAssembler::FontAssembler(FontInfo* font_info) : table_blacklist_(NULL) {
|
||||
font_info_ = font_info;
|
||||
Initialize();
|
||||
}
|
||||
|
||||
FontAssembler::~FontAssembler() { }
|
||||
|
||||
// Assemble a new font from the font info object.
|
||||
CALLER_ATTACH Font* FontAssembler::Assemble() {
|
||||
// Assemble tables we can subset.
|
||||
if (!AssembleCMapTable() || !AssembleGlyphAndLocaTables()) {
|
||||
return NULL;
|
||||
}
|
||||
// For all other tables, either include them unmodified or don't at all.
|
||||
const TableMap* common_table_map =
|
||||
font_info_->GetTableMap(font_info_->fonts()->begin()->first);
|
||||
for (TableMap::const_iterator it = common_table_map->begin(),
|
||||
e = common_table_map->end(); it != e; ++it) {
|
||||
if (table_blacklist_
|
||||
&& table_blacklist_->find(it->first) != table_blacklist_->end()) {
|
||||
continue;
|
||||
}
|
||||
font_builder_->NewTableBuilder(it->first, it->second->ReadFontData());
|
||||
}
|
||||
return font_builder_->Build();
|
||||
}
|
||||
|
||||
IntegerSet* FontAssembler::table_blacklist() const { return table_blacklist_; }
|
||||
|
||||
void FontAssembler::set_table_blacklist(IntegerSet* table_blacklist) {
|
||||
table_blacklist_ = table_blacklist;
|
||||
}
|
||||
|
||||
bool FontAssembler::AssembleCMapTable() {
|
||||
// Creating the new CMapTable and the new format 4 CMap
|
||||
Ptr<CMapTable::Builder> cmap_table_builder =
|
||||
down_cast<CMapTable::Builder*>
|
||||
(font_builder_->NewTableBuilder(Tag::cmap));
|
||||
if (!cmap_table_builder)
|
||||
return false;
|
||||
Ptr<CMapTable::CMapFormat4::Builder> cmap_builder =
|
||||
down_cast<CMapTable::CMapFormat4::Builder*>
|
||||
(cmap_table_builder->NewCMapBuilder(CMapFormat::kFormat4,
|
||||
CMapTable::WINDOWS_BMP));
|
||||
if (!cmap_builder)
|
||||
return false;
|
||||
// Creating the segments and the glyph id array
|
||||
CharacterMap* chars_to_glyph_ids = font_info_->chars_to_glyph_ids();
|
||||
SegmentList* segment_list = new SegmentList;
|
||||
IntegerList* glyph_id_array = new IntegerList;
|
||||
int32_t last_chararacter = -2;
|
||||
int32_t last_offset = 0;
|
||||
Ptr<CMapTable::CMapFormat4::Builder::Segment> current_segment;
|
||||
|
||||
// For simplicity, we will have one segment per contiguous range.
|
||||
// To test the algorithm, we've replaced the original CMap with the CMap
|
||||
// generated by this code without removing any character.
|
||||
// Tuffy.ttf: CMap went from 3146 to 3972 bytes (1.7% to 2.17% of file)
|
||||
// AnonymousPro.ttf: CMap went from 1524 to 1900 bytes (0.96% to 1.2%)
|
||||
for (CharacterMap::iterator it = chars_to_glyph_ids->begin(),
|
||||
e = chars_to_glyph_ids->end(); it != e; ++it) {
|
||||
int32_t character = it->first;
|
||||
int32_t glyph_id = it->second.glyph_id();
|
||||
if (character != last_chararacter + 1) { // new segment
|
||||
if (current_segment != NULL) {
|
||||
current_segment->set_end_count(last_chararacter);
|
||||
segment_list->push_back(current_segment);
|
||||
}
|
||||
// start_code = character
|
||||
// end_code = -1 (unknown for now)
|
||||
// id_delta = 0 (we don't use id_delta for this representation)
|
||||
// id_range_offset = last_offset (offset into the glyph_id_array)
|
||||
current_segment =
|
||||
new CMapTable::CMapFormat4::Builder::
|
||||
Segment(character, -1, 0, last_offset);
|
||||
}
|
||||
glyph_id_array->push_back(glyph_id);
|
||||
last_offset += DataSize::kSHORT;
|
||||
last_chararacter = character;
|
||||
}
|
||||
// The last segment is still open.
|
||||
if (glyph_id_array->size() < 1) {
|
||||
PyErr_SetString(NoGlyphs, "No glyphs for the specified characters found");
|
||||
return false;
|
||||
}
|
||||
current_segment->set_end_count(last_chararacter);
|
||||
segment_list->push_back(current_segment);
|
||||
// Updating the id_range_offset for every segment.
|
||||
for (int32_t i = 0, num_segs = segment_list->size(); i < num_segs; ++i) {
|
||||
Ptr<CMapTable::CMapFormat4::Builder::Segment> segment = segment_list->at(i);
|
||||
segment->set_id_range_offset(segment->id_range_offset()
|
||||
+ (num_segs - i + 1) * DataSize::kSHORT);
|
||||
}
|
||||
// Adding the final, required segment.
|
||||
current_segment =
|
||||
new CMapTable::CMapFormat4::Builder::Segment(0xffff, 0xffff, 1, 0);
|
||||
segment_list->push_back(current_segment);
|
||||
// Writing the segments and glyph id array to the CMap
|
||||
cmap_builder->set_segments(segment_list);
|
||||
cmap_builder->set_glyph_id_array(glyph_id_array);
|
||||
delete segment_list;
|
||||
delete glyph_id_array;
|
||||
return true;
|
||||
}
|
||||
|
||||
bool FontAssembler::AssembleGlyphAndLocaTables() {
|
||||
Ptr<LocaTable::Builder> loca_table_builder =
|
||||
down_cast<LocaTable::Builder*>
|
||||
(font_builder_->NewTableBuilder(Tag::loca));
|
||||
Ptr<GlyphTable::Builder> glyph_table_builder =
|
||||
down_cast<GlyphTable::Builder*>
|
||||
(font_builder_->NewTableBuilder(Tag::glyf));
|
||||
|
||||
GlyphIdSet* resolved_glyph_ids = font_info_->resolved_glyph_ids();
|
||||
IntegerList loca_list;
|
||||
// Basic sanity check: all LOCA tables are of the same size
|
||||
// This is necessary but not sufficient!
|
||||
int32_t previous_size = -1;
|
||||
for (FontIdMap::iterator it = font_info_->fonts()->begin();
|
||||
it != font_info_->fonts()->end(); ++it) {
|
||||
Ptr<LocaTable> loca_table =
|
||||
down_cast<LocaTable*>(font_info_->GetTable(it->first, Tag::loca));
|
||||
int32_t current_size = loca_table->header_length();
|
||||
if (previous_size != -1 && current_size != previous_size) {
|
||||
return false;
|
||||
}
|
||||
previous_size = current_size;
|
||||
}
|
||||
|
||||
// Assuming all fonts referenced by the FontInfo are the subsets of the same
|
||||
// font, their loca tables should all have the same sizes.
|
||||
// We'll just get the size of the first font's LOCA table for simplicty.
|
||||
Ptr<LocaTable> first_loca_table =
|
||||
down_cast<LocaTable*>
|
||||
(font_info_->GetTable(font_info_->fonts()->begin()->first, Tag::loca));
|
||||
int32_t num_loca_glyphs = first_loca_table->num_glyphs();
|
||||
loca_list.resize(num_loca_glyphs);
|
||||
loca_list.push_back(0);
|
||||
int32_t last_glyph_id = 0;
|
||||
int32_t last_offset = 0;
|
||||
GlyphTable::GlyphBuilderList* glyph_builders =
|
||||
glyph_table_builder->GlyphBuilders();
|
||||
|
||||
for (GlyphIdSet::iterator it = resolved_glyph_ids->begin(),
|
||||
e = resolved_glyph_ids->end(); it != e; ++it) {
|
||||
// Get the glyph for this resolved_glyph_id.
|
||||
int32_t resolved_glyph_id = it->glyph_id();
|
||||
int32_t font_id = it->font_id();
|
||||
// Get the LOCA table for the current glyph id.
|
||||
Ptr<LocaTable> loca_table =
|
||||
down_cast<LocaTable*>
|
||||
(font_info_->GetTable(font_id, Tag::loca));
|
||||
int32_t length = loca_table->GlyphLength(resolved_glyph_id);
|
||||
int32_t offset = loca_table->GlyphOffset(resolved_glyph_id);
|
||||
|
||||
// Get the GLYF table for the current glyph id.
|
||||
Ptr<GlyphTable> glyph_table =
|
||||
down_cast<GlyphTable*>
|
||||
(font_info_->GetTable(font_id, Tag::glyf));
|
||||
GlyphPtr glyph;
|
||||
glyph.Attach(glyph_table->GetGlyph(offset, length));
|
||||
|
||||
// The data reference by the glyph is copied into a new glyph and
|
||||
// added to the glyph_builders belonging to the glyph_table_builder.
|
||||
// When Build gets called, all the glyphs will be built.
|
||||
Ptr<ReadableFontData> data = glyph->ReadFontData();
|
||||
Ptr<WritableFontData> copy_data;
|
||||
copy_data.Attach(WritableFontData::CreateWritableFontData(data->Length()));
|
||||
data->CopyTo(copy_data);
|
||||
GlyphBuilderPtr glyph_builder;
|
||||
glyph_builder.Attach(glyph_table_builder->GlyphBuilder(copy_data));
|
||||
glyph_builders->push_back(glyph_builder);
|
||||
|
||||
// If there are missing glyphs between the last glyph_id and the
|
||||
// current resolved_glyph_id, since the LOCA table needs to have the same
|
||||
// size, the offset is kept the same.
|
||||
for (int32_t i = last_glyph_id + 1; i <= resolved_glyph_id; ++i)
|
||||
loca_list[i] = last_offset;
|
||||
last_offset += length;
|
||||
loca_list[resolved_glyph_id + 1] = last_offset;
|
||||
last_glyph_id = resolved_glyph_id + 1;
|
||||
}
|
||||
// If there are missing glyph ids, their loca entries must all point
|
||||
// to the same offset as the last valid glyph id making them all zero length.
|
||||
for (int32_t i = last_glyph_id + 1; i <= num_loca_glyphs; ++i)
|
||||
loca_list[i] = last_offset;
|
||||
loca_table_builder->SetLocaList(&loca_list);
|
||||
return true;
|
||||
}
|
||||
|
||||
void FontAssembler::Initialize() {
|
||||
font_factory_.Attach(FontFactory::GetInstance());
|
||||
font_builder_.Attach(font_factory_->NewFontBuilder());
|
||||
}
|
||||
|
||||
|
||||
// }}}
|
||||
|
||||
// Subsetters {{{
|
||||
// Subsets a given font using a character predicate.
|
||||
|
||||
PredicateSubsetter::PredicateSubsetter(Font* font, CharacterPredicate* predicate) : font_(font), predicate_(predicate) {}
|
||||
|
||||
PredicateSubsetter::~PredicateSubsetter() { }
|
||||
|
||||
// Performs subsetting returning the subsetted font.
|
||||
CALLER_ATTACH Font* PredicateSubsetter::Subset() {
|
||||
Ptr<FontSourcedInfoBuilder> info_builder =
|
||||
new FontSourcedInfoBuilder(font_, 0, predicate_);
|
||||
|
||||
Ptr<FontInfo> font_info;
|
||||
font_info.Attach(info_builder->GetFontInfo());
|
||||
if (!font_info) {
|
||||
PyErr_SetString(Error, "Could not create font info");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
IntegerSet* table_blacklist = new IntegerSet;
|
||||
table_blacklist->insert(Tag::DSIG);
|
||||
Ptr<FontAssembler> font_assembler = new FontAssembler(font_info,
|
||||
table_blacklist);
|
||||
Ptr<Font> font_subset;
|
||||
font_subset.Attach(font_assembler->Assemble());
|
||||
delete table_blacklist;
|
||||
if (!font_subset) { if (!PyErr_Occurred()) PyErr_SetString(Error, "Could not subset font"); }
|
||||
return font_subset.Detach();
|
||||
}
|
||||
|
||||
|
||||
// }}}
|
||||
|
||||
static void get_stats(Font *font, PyObject *dict) {
|
||||
PyObject *t;
|
||||
const TableMap* tables = font->GetTableMap();
|
||||
for (TableMap::const_iterator it = tables->begin(),
|
||||
e = tables->end(); it != e; ++it) {
|
||||
t = PyInt_FromLong(it->second->DataLength());
|
||||
if (t != NULL) {
|
||||
PyDict_SetItemString(dict, TagToString(it->first), t);
|
||||
Py_DECREF(t);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static PyObject*
|
||||
do_subset(const char *data, Py_ssize_t sz, Ptr<CharacterPredicate> &predicate) {
|
||||
FontPtr font;
|
||||
Ptr<FontFactory> font_factory;
|
||||
FontArray fonts;
|
||||
MemoryInputStream stream;
|
||||
PyObject *stats, *stats2;
|
||||
|
||||
if (!stream.Attach(reinterpret_cast<const byte_t*>(data), sz))
|
||||
return PyErr_NoMemory();
|
||||
font_factory.Attach(FontFactory::GetInstance());
|
||||
font_factory->LoadFonts(&stream, &fonts);
|
||||
if (fonts.empty() || fonts[0] == NULL) {
|
||||
PyErr_SetString(Error, "Failed to load font from provided data.");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
font = fonts[0].Detach();
|
||||
if (font->num_tables() == 0) {
|
||||
PyErr_SetString(Error, "Loaded font has 0 tables.");
|
||||
return NULL;
|
||||
}
|
||||
Ptr<PredicateSubsetter> subsetter = new PredicateSubsetter(font, predicate);
|
||||
Ptr<Font> new_font;
|
||||
new_font.Attach(subsetter->Subset());
|
||||
if (!new_font) return NULL;
|
||||
|
||||
Ptr<FontFactory> ff;
|
||||
ff.Attach(FontFactory::GetInstance());
|
||||
MemoryOutputStream output_stream;
|
||||
ff->SerializeFont(new_font, &output_stream);
|
||||
|
||||
stats = PyDict_New(); stats2 = PyDict_New();
|
||||
if (stats == NULL || stats2 == NULL) return PyErr_NoMemory();
|
||||
get_stats(font, stats);
|
||||
get_stats(new_font, stats2);
|
||||
return Py_BuildValue("s#NN", (char*)output_stream.Get(), output_stream.Size(), stats, stats2);
|
||||
}
|
||||
|
||||
static PyObject*
|
||||
subset(PyObject *self, PyObject *args) {
|
||||
const char *data;
|
||||
Py_ssize_t sz;
|
||||
PyObject *individual_chars, *ranges, *t;
|
||||
int32_t temp;
|
||||
|
||||
if (!PyArg_ParseTuple(args, "s#OO", &data, &sz, &individual_chars, &ranges)) return NULL;
|
||||
|
||||
if (!PyTuple_Check(individual_chars) || !PyTuple_Check(ranges)) {
|
||||
PyErr_SetString(PyExc_TypeError, "individual_chars and ranges must be tuples");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
if (PyTuple_Size(ranges) < 1 && PyTuple_Size(individual_chars) < 1) {
|
||||
PyErr_SetString(NoGlyphs, "No characters specified");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
IntegerSet chars;
|
||||
for (Py_ssize_t i = 0; i < PyTuple_Size(individual_chars); i++) {
|
||||
temp = (int32_t)PyInt_AsLong(PyTuple_GET_ITEM(individual_chars, i));
|
||||
if (temp == -1 && PyErr_Occurred()) return NULL;
|
||||
chars.insert(temp);
|
||||
}
|
||||
|
||||
IntegerList cranges;
|
||||
cranges.resize(2*PyTuple_Size(ranges));
|
||||
for (Py_ssize_t i = 0; i < PyTuple_Size(ranges); i++) {
|
||||
t = PyTuple_GET_ITEM(ranges, i);
|
||||
if (!PyTuple_Check(t) || PyTuple_Size(t) != 2) {
|
||||
PyErr_SetString(PyExc_TypeError, "ranges must contain only 2-tuples");
|
||||
return NULL;
|
||||
}
|
||||
for (Py_ssize_t j = 0; j < 2; j++) {
|
||||
cranges[2*i+j] = (int32_t)PyInt_AsLong(PyTuple_GET_ITEM(t, j));
|
||||
if (cranges[2*i+j] == -1 && PyErr_Occurred()) return NULL;
|
||||
}
|
||||
}
|
||||
|
||||
Ptr<CharacterPredicate> predicate = new (std::nothrow) CompositePredicate(chars, cranges);
|
||||
if (predicate == NULL) return PyErr_NoMemory();
|
||||
|
||||
try {
|
||||
return do_subset(data, sz, predicate);
|
||||
} catch (std::exception &e) {
|
||||
PyErr_SetString(Error, e.what());
|
||||
return NULL;
|
||||
} catch (...) {
|
||||
PyErr_SetString(Error, "An unknown exception occurred while subsetting");
|
||||
return NULL;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
static
|
||||
PyMethodDef methods[] = {
|
||||
{"subset", (PyCFunction)subset, METH_VARARGS,
|
||||
"subset(bytestring, individual_chars, ranges) -> Subset the sfnt in bytestring, keeping only characters specified by individual_chars and ranges. Returns the subset font as a bytestring and the sizes of all font tables in the old and new fonts."
|
||||
},
|
||||
|
||||
{NULL, NULL, 0, NULL}
|
||||
};
|
||||
|
||||
PyMODINIT_FUNC
|
||||
initsfntly(void) {
|
||||
PyObject *m;
|
||||
|
||||
m = Py_InitModule3(
|
||||
"sfntly", methods,
|
||||
"Wrapper for the Google sfntly library"
|
||||
);
|
||||
if (m == NULL) return;
|
||||
|
||||
Error = PyErr_NewException((char*)"sfntly.Error", NULL, NULL);
|
||||
if (Error == NULL) return;
|
||||
PyModule_AddObject(m, "Error", Error);
|
||||
|
||||
NoGlyphs = PyErr_NewException((char*)"sfntly.NoGlyphs", NULL, NULL);
|
||||
if (NoGlyphs == NULL) return;
|
||||
PyModule_AddObject(m, "NoGlyphs", NoGlyphs);
|
||||
}
|
||||
|
||||
|
||||
|
196
src/calibre/utils/fonts/sfntly.h
Normal file
196
src/calibre/utils/fonts/sfntly.h
Normal file
@ -0,0 +1,196 @@
|
||||
/*
|
||||
* sfntly.h
|
||||
* Copyright (C) 2012 Kovid Goyal <kovid at kovidgoyal.net>
|
||||
*
|
||||
* Distributed under terms of the GPL3 license.
|
||||
*/
|
||||
#pragma once
|
||||
|
||||
|
||||
#include <map>
|
||||
#include <set>
|
||||
|
||||
#include <sfntly/tag.h>
|
||||
#include <sfntly/font.h>
|
||||
#include <sfntly/font_factory.h>
|
||||
#include <sfntly/port/exception_type.h>
|
||||
#include <sfntly/table/truetype/loca_table.h>
|
||||
#include <sfntly/table/truetype/glyph_table.h>
|
||||
#include <sfntly/tools/subsetter/subsetter.h>
|
||||
|
||||
using namespace sfntly;
|
||||
|
||||
typedef int32_t FontId;
|
||||
typedef std::map<FontId, Ptr<Font> > FontIdMap;
|
||||
|
||||
class CharacterPredicate : virtual public RefCount {
|
||||
public:
|
||||
CharacterPredicate() {}
|
||||
virtual ~CharacterPredicate() {}
|
||||
virtual bool operator()(int32_t character) const = 0;
|
||||
};
|
||||
|
||||
class CompositePredicate : public CharacterPredicate,
|
||||
public RefCounted<CompositePredicate> {
|
||||
public:
|
||||
CompositePredicate(IntegerSet &chars, IntegerList &ranges);
|
||||
~CompositePredicate();
|
||||
virtual bool operator()(int32_t character) const;
|
||||
private:
|
||||
IntegerSet chars;
|
||||
IntegerList ranges;
|
||||
};
|
||||
|
||||
|
||||
|
||||
// Glyph id pair that contains the loca table glyph id as well as the
|
||||
// font id that has the glyph table this glyph belongs to.
|
||||
class GlyphId {
|
||||
public:
|
||||
GlyphId(int32_t glyph_id, FontId font_id);
|
||||
~GlyphId();
|
||||
|
||||
bool operator==(const GlyphId& other) const;
|
||||
bool operator<(const GlyphId& other) const;
|
||||
|
||||
int32_t glyph_id() const;
|
||||
void set_glyph_id(const int32_t glyph_id);
|
||||
FontId font_id() const;
|
||||
void set_font_id(const FontId font_id);
|
||||
|
||||
private:
|
||||
int32_t glyph_id_;
|
||||
FontId font_id_;
|
||||
};
|
||||
|
||||
typedef std::map<int32_t, GlyphId> CharacterMap;
|
||||
typedef std::set<GlyphId> GlyphIdSet;
|
||||
|
||||
|
||||
// Font information used for FontAssembler in the construction of a new font.
|
||||
// Will make copies of character map, glyph id set and font id map.
|
||||
class FontInfo : public RefCounted<FontInfo> {
|
||||
public:
|
||||
// Empty FontInfo object.
|
||||
FontInfo();
|
||||
|
||||
// chars_to_glyph_ids maps characters to GlyphIds for CMap construction
|
||||
// resolved_glyph_ids defines GlyphIds which should be in the final font
|
||||
// fonts is a map of font ids to fonts to reference any needed table
|
||||
FontInfo(CharacterMap* chars_to_glyph_ids,
|
||||
GlyphIdSet* resolved_glyph_ids,
|
||||
FontIdMap* fonts);
|
||||
|
||||
virtual ~FontInfo();
|
||||
|
||||
// Gets the table with the specified tag from the font corresponding to
|
||||
// font_id or NULL if there is no such font/table.
|
||||
// font_id is the id of the font that contains the table
|
||||
// tag identifies the table to be obtained
|
||||
virtual FontDataTable* GetTable(FontId font_id, int32_t tag);
|
||||
|
||||
// Gets the table map of the font whose id is font_id
|
||||
virtual const TableMap* GetTableMap(FontId font_id);
|
||||
|
||||
CharacterMap* chars_to_glyph_ids() const;
|
||||
// Takes ownership of the chars_to_glyph_ids CharacterMap.
|
||||
void set_chars_to_glyph_ids(CharacterMap* chars_to_glyph_ids);
|
||||
|
||||
GlyphIdSet* resolved_glyph_ids() const;
|
||||
// Takes ownership of the glyph_ids GlyphIdSet.
|
||||
void set_resolved_glyph_ids(GlyphIdSet* resolved_glyph_ids);
|
||||
|
||||
FontIdMap* fonts() const;
|
||||
|
||||
// Takes ownership of the fonts FontIdMap.
|
||||
void set_fonts(FontIdMap* fonts);
|
||||
|
||||
private:
|
||||
CharacterMap* chars_to_glyph_ids_;
|
||||
GlyphIdSet* resolved_glyph_ids_;
|
||||
FontIdMap* fonts_;
|
||||
};
|
||||
|
||||
|
||||
// FontSourcedInfoBuilder is used to create a FontInfo object from a Font
|
||||
// optionally specifying a CharacterPredicate to filter out some of
|
||||
// the font's characters.
|
||||
// It does not take ownership or copy the values its constructor receives.
|
||||
class FontSourcedInfoBuilder :
|
||||
public RefCounted<FontSourcedInfoBuilder> {
|
||||
public:
|
||||
FontSourcedInfoBuilder(Font* font, FontId font_id);
|
||||
|
||||
FontSourcedInfoBuilder(Font* font,
|
||||
FontId font_id,
|
||||
CharacterPredicate* predicate);
|
||||
|
||||
virtual ~FontSourcedInfoBuilder();
|
||||
|
||||
virtual CALLER_ATTACH FontInfo* GetFontInfo();
|
||||
|
||||
protected:
|
||||
bool GetCharacterMap(CharacterMap* chars_to_glyph_ids);
|
||||
|
||||
bool ResolveCompositeGlyphs(CharacterMap* chars_to_glyph_ids,
|
||||
GlyphIdSet* resolved_glyph_ids);
|
||||
|
||||
void Initialize();
|
||||
|
||||
private:
|
||||
Ptr<Font> font_;
|
||||
FontId font_id_;
|
||||
CharacterPredicate* predicate_;
|
||||
|
||||
Ptr<CMapTable::CMap> cmap_;
|
||||
Ptr<LocaTable> loca_table_;
|
||||
Ptr<GlyphTable> glyph_table_;
|
||||
};
|
||||
|
||||
|
||||
// Assembles FontInfo into font builders.
|
||||
// Does not take ownership of data passed to it.
|
||||
class FontAssembler : public RefCounted<FontAssembler> {
|
||||
public:
|
||||
// font_info is the FontInfo which will be used for the new font
|
||||
// table_blacklist is used to decide which tables to exclude from the
|
||||
// final font.
|
||||
FontAssembler(FontInfo* font_info, IntegerSet* table_blacklist);
|
||||
|
||||
explicit FontAssembler(FontInfo* font_info);
|
||||
|
||||
~FontAssembler();
|
||||
|
||||
// Assemble a new font from the font info object.
|
||||
virtual CALLER_ATTACH Font* Assemble();
|
||||
|
||||
IntegerSet* table_blacklist() const;
|
||||
|
||||
void set_table_blacklist(IntegerSet* table_blacklist);
|
||||
|
||||
protected:
|
||||
virtual bool AssembleCMapTable();
|
||||
|
||||
virtual bool AssembleGlyphAndLocaTables();
|
||||
|
||||
virtual void Initialize();
|
||||
|
||||
private:
|
||||
Ptr<FontInfo> font_info_;
|
||||
Ptr<FontFactory> font_factory_;
|
||||
Ptr<Font::Builder> font_builder_;
|
||||
IntegerSet* table_blacklist_;
|
||||
};
|
||||
|
||||
class PredicateSubsetter : public RefCounted<Subsetter> {
|
||||
public:
|
||||
PredicateSubsetter(Font* font, CharacterPredicate* predicate);
|
||||
virtual ~PredicateSubsetter();
|
||||
|
||||
// Performs subsetting returning the subsetted font.
|
||||
virtual CALLER_ATTACH Font* Subset();
|
||||
|
||||
private:
|
||||
Ptr<Font> font_;
|
||||
Ptr<CharacterPredicate> predicate_;
|
||||
};
|
136
src/calibre/utils/fonts/subset.py
Normal file
136
src/calibre/utils/fonts/subset.py
Normal file
@ -0,0 +1,136 @@
|
||||
#!/usr/bin/env python
|
||||
# vim:fileencoding=UTF-8:ts=4:sw=4:sta:et:sts=4:fdm=marker:ai
|
||||
from __future__ import (unicode_literals, division, absolute_import,
|
||||
print_function)
|
||||
|
||||
__license__ = 'GPL v3'
|
||||
__copyright__ = '2012, Kovid Goyal <kovid at kovidgoyal.net>'
|
||||
__docformat__ = 'restructuredtext en'
|
||||
|
||||
from future_builtins import map
|
||||
|
||||
class NoGlyphs(ValueError):
|
||||
pass
|
||||
|
||||
def load_sfntly():
|
||||
from calibre.constants import plugins
|
||||
sfntly, err = plugins['sfntly']
|
||||
if err:
|
||||
raise RuntimeError('Failed to load sfntly: %s'%err)
|
||||
return sfntly
|
||||
|
||||
def subset(font_data, individual_chars, ranges):
|
||||
individual = tuple(sorted(map(ord, individual_chars)))
|
||||
cranges = []
|
||||
for s, e in ranges:
|
||||
sc, ec = map(ord, (s, e))
|
||||
if ec <= sc:
|
||||
raise ValueError('The start character %s is after the end'
|
||||
' character %s'%(s, e))
|
||||
cranges.append((sc, ec))
|
||||
sfntly = load_sfntly()
|
||||
try:
|
||||
return sfntly.subset(font_data, individual, tuple(cranges))
|
||||
except sfntly.NoGlyphs:
|
||||
raise NoGlyphs('No glyphs were found in this font for the'
|
||||
' specified characters. Subsetting is pointless')
|
||||
|
||||
def option_parser():
|
||||
import textwrap
|
||||
from calibre.utils.config import OptionParser
|
||||
parser = OptionParser(usage=textwrap.dedent('''\
|
||||
%prog [options] input_font_file output_font_file characters_to_keep
|
||||
|
||||
Subset the specified font, keeping only the glyphs for the characters in
|
||||
characters_to_keep. characters_to_keep is a comma separated list of characters of
|
||||
the form: a,b,c,A-Z,0-9,xyz
|
||||
|
||||
You can specify ranges in the list of characters, as shown above.
|
||||
'''))
|
||||
parser.add_option('-c', '--codes', default=False, action='store_true',
|
||||
help='If specified, the list of characters is interpreted as '
|
||||
'numeric unicode codes instead of characters. So to specify the '
|
||||
'characters a,b you would use 97,98')
|
||||
parser.prog = 'subset-font'
|
||||
return parser
|
||||
|
||||
def print_stats(old_stats, new_stats):
|
||||
from calibre import prints
|
||||
prints('========= Table comparison (original vs. subset) =========')
|
||||
prints('Table', ' ', '%10s'%'Size', ' ', 'Percent', ' ', '%10s'%'New Size',
|
||||
' New Percent')
|
||||
prints('='*80)
|
||||
old_total = sum(old_stats.itervalues())
|
||||
new_total = sum(new_stats.itervalues())
|
||||
tables = sorted(old_stats.iterkeys(), key=lambda x:old_stats[x],
|
||||
reverse=True)
|
||||
for table in tables:
|
||||
osz = old_stats[table]
|
||||
op = osz/old_total * 100
|
||||
nsz = new_stats.get(table, 0)
|
||||
np = nsz/new_total * 100
|
||||
suffix = ' | same size'
|
||||
if nsz != osz:
|
||||
suffix = ' | reduced to %.1f %%'%(nsz/osz * 100)
|
||||
prints('%4s'%table, ' ', '%10s'%osz, ' ', '%5.1f %%'%op, ' ',
|
||||
'%10s'%nsz, ' ', '%5.1f %%'%np, suffix)
|
||||
prints('='*80)
|
||||
|
||||
def main(args):
|
||||
import sys, time
|
||||
from calibre import prints
|
||||
parser = option_parser()
|
||||
opts, args = parser.parse_args(args)
|
||||
if len(args) < 4 or len(args) > 4:
|
||||
parser.print_help()
|
||||
raise SystemExit(1)
|
||||
iff, off, chars = args[1:]
|
||||
with open(iff, 'rb') as f:
|
||||
orig = f.read()
|
||||
|
||||
chars = [x.strip() for x in chars.split(',')]
|
||||
individual, ranges = set(), set()
|
||||
|
||||
def not_single(c):
|
||||
if len(c) > 1:
|
||||
prints(c, 'is not a single character', file=sys.stderr)
|
||||
raise SystemExit(1)
|
||||
|
||||
for c in chars:
|
||||
if '-' in c:
|
||||
parts = [x.strip() for x in c.split('-')]
|
||||
if len(parts) != 2:
|
||||
prints('Invalid range:', c, file=sys.stderr)
|
||||
raise SystemExit(1)
|
||||
if opts.codes:
|
||||
parts = tuple(map(unichr, map(int, parts)))
|
||||
map(not_single, parts)
|
||||
ranges.add(tuple(parts))
|
||||
else:
|
||||
if opts.codes:
|
||||
c = unichr(int(c))
|
||||
not_single(c)
|
||||
individual.add(c)
|
||||
st = time.time()
|
||||
sf, old_stats, new_stats = subset(orig, individual, ranges)
|
||||
taken = time.time() - st
|
||||
reduced = (len(sf)/len(orig)) * 100
|
||||
def sz(x):
|
||||
return '%gKB'%(len(x)/1024.)
|
||||
print_stats(old_stats, new_stats)
|
||||
prints('Original size:', sz(orig), 'Subset size:', sz(sf), 'Reduced to: %g%%'%(reduced))
|
||||
prints('Subsetting took %g seconds'%taken)
|
||||
with open(off, 'wb') as f:
|
||||
f.write(sf)
|
||||
prints('Subset font written to:', off)
|
||||
|
||||
if __name__ == '__main__':
|
||||
try:
|
||||
import init_calibre
|
||||
init_calibre
|
||||
except ImportError:
|
||||
pass
|
||||
import sys
|
||||
main(sys.argv)
|
||||
|
||||
|
Loading…
x
Reference in New Issue
Block a user