490 lines
16 KiB
Python
490 lines
16 KiB
Python
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#!/usr/bin/env python3
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# Copyright 2017 The Chromium Authors
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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import argparse
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import os
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import os.path
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import shutil
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import subprocess
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import sys
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import stat
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import tempfile
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# How to patch libxml2 in Chromium:
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#
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# 1. Write a .patch file and add it to third_party/libxml/chromium.
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# 2. Apply the patch in src: patch -p1 <../chromium/foo.patch
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# 3. Add the patch to the list of patches in this file.
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# 4. Update README.chromium with the provenance of the patch.
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# 5. Upload a change with the modified documentation, roll script,
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# patch, applied patch and any other relevant changes like
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# regression tests. Go through the usual review and commit process.
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#
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# How to roll libxml2 in Chromium:
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#
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# Prerequisites:
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#
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# 1. Check out Chromium somewhere on Linux, Mac and Windows.
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# 2. On Linux:
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# a. sudo apt-get install libicu-dev
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# b. git clone https://github.com/GNOME/libxml2.git somewhere
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# 3. On Mac, install these packages with brew:
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# autoconf automake libtool pkgconfig icu4c
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#
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# Procedure:
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#
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# Warning: This process is destructive. Run it on a clean branch.
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#
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# 1. On Linux, in the libxml2 repo directory:
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# a. git remote update origin
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# b. git checkout origin/master
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#
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# This will be the upstream version of libxml you are rolling to.
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#
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# 2. On Linux, in the Chromium src director:
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# a. third_party/libxml/chromium/roll.py --linux /path/to/libxml2
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#
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# If this fails, it may be a patch no longer applies. Reset to
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# head; modify the patch files, this script, and
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# README.chromium; then commit the result and run it again.
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#
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# b. Upload a CL, but do not Start Review.
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#
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# 2. On Windows, in the Chromium src directory:
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# a. git cl patch <Gerrit Issue ID>
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# b. third_party\libxml\chromium\roll.py --win32
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# c. git cl upload
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#
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# 3. On Mac, in the Chromium src directory:
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# a. git cl patch <Gerrit Issue ID>
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# b. third_party/libxml/chromium/roll.py --mac --icu4c_path=~/homebrew/opt/icu4c
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# c. Make and commit any final changes to README.chromium, BUILD.gn, etc.
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# d. git cl upload
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# e. Complete the review as usual
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PATCHES = [
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'libxml2-2.9.4-security-xpath-nodetab-uaf.patch',
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'undo-sax-deprecation.patch',
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]
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# See libxml2 configure.ac and win32/configure.js to learn what
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# options are available. We include every option here to more easily track
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# changes from one version to the next, and to be sure we only include what
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# we need.
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# These two sets of options should be in sync. You can check the
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# generated #defines in (win32|mac|linux)/include/libxml/xmlversion.h to confirm
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# this.
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# We would like to disable python but it introduces a host of build errors
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SHARED_XML_CONFIGURE_OPTIONS = [
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# These options are turned ON
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('--with-html', 'html=yes'),
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('--with-icu', 'icu=yes'),
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('--with-output', 'output=yes'),
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('--with-push', 'push=yes'),
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('--with-python', 'python=yes'),
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('--with-reader', 'reader=yes'),
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('--with-sax1', 'sax1=yes'),
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('--with-threads', 'threads=yes'),
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('--with-tree', 'tree=yes'),
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('--with-writer', 'writer=yes'),
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('--with-xpath', 'xpath=yes'),
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# These options are turned OFF
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('--without-c14n', 'c14n=no'),
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('--without-catalog', 'catalog=no'),
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('--without-debug', 'xml_debug=no'),
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('--without-ftp', 'ftp=no'),
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('--without-http', 'http=no'),
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('--without-iconv', 'iconv=no'),
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('--without-iso8859x', 'iso8859x=no'),
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('--without-legacy', 'legacy=no'),
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('--without-lzma', 'lzma=no'),
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('--without-mem-debug', 'mem_debug=no'),
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('--without-modules', 'modules=no'),
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('--without-pattern', 'pattern=no'),
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('--without-regexps', 'regexps=no'),
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('--without-schemas', 'schemas=no'),
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('--without-schematron', 'schematron=no'),
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('--without-valid', 'valid=no'),
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('--without-xinclude', 'xinclude=no'),
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('--without-xptr', 'xptr=no'),
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('--without-xptr-locs', 'xptr_locs=no'),
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('--without-zlib', 'zlib=no'),
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]
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# These options are only available in configure.ac for Linux and Mac.
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EXTRA_NIX_XML_CONFIGURE_OPTIONS = [
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'--without-fexceptions',
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'--without-minimum',
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'--without-readline',
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'--without-history',
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]
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# These options are only available in win32/configure.js for Windows.
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EXTRA_WIN32_XML_CONFIGURE_OPTIONS = [
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'trio=no',
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'walker=no',
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]
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XML_CONFIGURE_OPTIONS = (
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[option[0] for option in SHARED_XML_CONFIGURE_OPTIONS] +
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EXTRA_NIX_XML_CONFIGURE_OPTIONS)
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XML_WIN32_CONFIGURE_OPTIONS = (
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[option[1] for option in SHARED_XML_CONFIGURE_OPTIONS] +
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EXTRA_WIN32_XML_CONFIGURE_OPTIONS)
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FILES_TO_REMOVE = [
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'src/DOCBparser.c',
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'src/HACKING',
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'src/INSTALL',
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'src/INSTALL.libxml2',
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'src/MAINTAINERS',
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'src/Makefile.in',
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'src/Makefile.win',
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'src/README.cvs-commits',
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# This is unneeded "legacy" SAX API, even though we enable SAX1.
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'src/SAX.c',
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'src/VxWorks',
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'src/autogen.sh',
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'src/autom4te.cache',
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'src/bakefile',
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'src/build_glob.py',
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'src/c14n.c',
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'src/catalog.c',
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'src/compile',
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'src/config.guess',
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'src/config.sub',
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'src/configure',
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'src/chvalid.def',
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'src/debugXML.c',
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'src/depcomp',
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'src/doc',
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'src/example',
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'src/fuzz',
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'src/genChRanges.py',
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'src/global.data',
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'src/include/libxml/Makefile.in',
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'src/include/libxml/xmlversion.h',
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'src/include/libxml/xmlwin32version.h',
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'src/include/libxml/xmlwin32version.h.in',
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'src/include/Makefile.in',
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'src/install-sh',
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'src/legacy.c',
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'src/libxml2.doap',
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'src/ltmain.sh',
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'src/m4',
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'src/macos/libxml2.mcp.xml.sit.hqx',
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'src/missing',
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'src/optim',
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'src/os400',
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'src/python',
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'src/relaxng.c',
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'src/result',
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'src/rngparser.c',
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'src/schematron.c',
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'src/test',
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'src/testOOM.c',
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'src/testOOMlib.c',
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'src/testOOMlib.h',
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'src/trio.c',
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'src/trio.h',
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'src/triop.h',
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'src/triostr.c',
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'src/triostr.h',
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'src/vms',
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'src/win32/VC10/config.h',
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'src/win32/wince',
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'src/xinclude.c',
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'src/xlink.c',
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'src/xml2-config.in',
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'src/xmlcatalog.c',
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'src/xmllint.c',
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'src/xmlmodule.c',
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'src/xmlregexp.c',
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'src/xmlschemas.c',
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'src/xmlschemastypes.c',
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'src/xpointer.c',
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'src/xstc',
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'src/xzlib.c',
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'linux/.deps',
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'linux/doc',
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'linux/example',
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'linux/fuzz',
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'linux/include/private',
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'linux/python',
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'linux/xstc',
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]
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THIRD_PARTY_LIBXML_SRC = 'third_party/libxml/src'
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class WorkingDir(object):
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""""Changes the working directory and resets it on exit."""
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def __init__(self, path):
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self.prev_path = os.getcwd()
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self.path = path
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def __enter__(self):
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os.chdir(self.path)
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def __exit__(self, exc_type, exc_value, traceback):
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if exc_value:
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print('was in %s; %s before that' % (self.path, self.prev_path))
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os.chdir(self.prev_path)
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def git(*args):
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"""Runs a git subcommand.
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On Windows this uses the shell because there's a git wrapper
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batch file in depot_tools.
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Arguments:
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args: The arguments to pass to git.
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"""
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command = ['git'] + list(args)
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subprocess.check_call(command, shell=(os.name == 'nt'))
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def remove_tracked_and_local_dir(path):
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"""Removes the contents of a directory from git, and the filesystem.
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Arguments:
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path: The path to remove.
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"""
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remove_tracked_files([path])
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shutil.rmtree(path, ignore_errors=True)
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os.mkdir(path)
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def remove_tracked_files(files_to_remove):
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"""Removes tracked files from git.
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Arguments:
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files_to_remove: The files to remove.
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"""
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files_to_remove = [f for f in files_to_remove if os.path.exists(f)]
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if files_to_remove:
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git('rm', '-rf', *files_to_remove)
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def sed_in_place(input_filename, program):
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"""Replaces text in a file.
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Arguments:
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input_filename: The file to edit.
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program: The sed program to perform edits on the file.
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"""
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# OS X's sed requires -e
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subprocess.check_call(['sed', '-i', '-e', program, input_filename])
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def check_copying(full_path_to_third_party_libxml_src):
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path = os.path.join(full_path_to_third_party_libxml_src, 'COPYING')
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if not os.path.exists(path):
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return
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with open(path) as f:
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s = f.read()
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if 'GNU' in s:
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raise Exception('check COPYING')
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def prepare_libxml_distribution(src_path, libxml2_repo_path, temp_dir):
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"""Makes a libxml2 distribution.
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Args:
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src_path: The path to the Chromium checkout.
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libxml2_repo_path: The path to the local clone of the libxml2 repo.
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temp_dir: A temporary directory to stage the distribution to.
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Returns: A tuple of commit hash and full path to the archive.
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"""
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# If it was necessary to push from a distribution prepared upstream,
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# this is the point to inject it: Return the version string and the
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# distribution tar file.
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# The libxml2 repo we're pulling changes from should not have
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# local changes. This *should* be a commit that's publicly visible
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# in the upstream repo; reviewers should check this.
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check_clean(libxml2_repo_path)
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temp_config_path = os.path.join(temp_dir, 'config')
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os.mkdir(temp_config_path)
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temp_src_path = os.path.join(temp_dir, 'src')
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os.mkdir(temp_src_path)
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with WorkingDir(libxml2_repo_path):
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commit = subprocess.check_output(
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['git', 'log', '-n', '1', '--pretty=format:%H',
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'HEAD']).decode('ascii')
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subprocess.check_call(
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'git archive HEAD | tar -x -C "%s"' % temp_src_path,
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shell=True)
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with WorkingDir(temp_src_path):
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os.remove('.gitignore')
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for patch in PATCHES:
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print('applying %s' % patch)
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subprocess.check_call(
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'patch -p1 --fuzz=0 < %s' % os.path.join(
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src_path, THIRD_PARTY_LIBXML_SRC, '..', 'chromium', patch),
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shell=True)
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with WorkingDir(temp_config_path):
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print('../src/autogen.sh %s' % XML_CONFIGURE_OPTIONS)
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subprocess.check_call(['../src/autogen.sh'] + XML_CONFIGURE_OPTIONS)
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subprocess.check_call(['make', 'dist-all'])
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# Work out what it is called
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tar_file = subprocess.check_output(
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'''awk '/PACKAGE =/ {p=$3} /VERSION =/ {v=$3} '''
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'''END {printf("%s-%s.tar.xz", p, v)}' Makefile''',
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shell=True).decode('ascii')
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return commit, os.path.abspath(tar_file)
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def roll_libxml_linux(src_path, libxml2_repo_path):
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with WorkingDir(src_path):
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# Export the upstream git repo.
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try:
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temp_dir = tempfile.mkdtemp()
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print('temporary directory: %s' % temp_dir)
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commit, tar_file = prepare_libxml_distribution(
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src_path, libxml2_repo_path, temp_dir)
|
||
|
|
|
||
|
|
# Remove all of the old libxml to ensure only desired cruft
|
||
|
|
# accumulates
|
||
|
|
remove_tracked_and_local_dir(THIRD_PARTY_LIBXML_SRC)
|
||
|
|
|
||
|
|
# Update the libxml repo and export it to the Chromium tree
|
||
|
|
with WorkingDir(THIRD_PARTY_LIBXML_SRC):
|
||
|
|
subprocess.check_call(
|
||
|
|
'tar xJf %s --strip-components=1' % tar_file,
|
||
|
|
shell=True)
|
||
|
|
finally:
|
||
|
|
shutil.rmtree(temp_dir)
|
||
|
|
|
||
|
|
with WorkingDir(THIRD_PARTY_LIBXML_SRC):
|
||
|
|
# Put the version number is the README file
|
||
|
|
sed_in_place('../README.chromium',
|
||
|
|
's/Version: .*$/Version: %s/' % commit)
|
||
|
|
|
||
|
|
with WorkingDir('../linux'):
|
||
|
|
subprocess.check_call(
|
||
|
|
['../src/autogen.sh'] + XML_CONFIGURE_OPTIONS)
|
||
|
|
check_copying(os.getcwd())
|
||
|
|
sed_in_place('config.h', 's/#define HAVE_RAND_R 1//')
|
||
|
|
|
||
|
|
# Add *everything*
|
||
|
|
with WorkingDir('../src'):
|
||
|
|
git('add', '*')
|
||
|
|
git('commit', '-am', '%s libxml, linux' % commit)
|
||
|
|
print('Now push to Windows and run steps there.')
|
||
|
|
|
||
|
|
|
||
|
|
def roll_libxml_win32(src_path):
|
||
|
|
with WorkingDir(src_path):
|
||
|
|
# Run the configure script.
|
||
|
|
with WorkingDir(os.path.join(THIRD_PARTY_LIBXML_SRC, 'win32')):
|
||
|
|
subprocess.check_call(
|
||
|
|
['cscript', '//E:jscript', 'configure.js', 'compiler=msvc'] +
|
||
|
|
XML_WIN32_CONFIGURE_OPTIONS)
|
||
|
|
|
||
|
|
# Add and commit the result.
|
||
|
|
shutil.move('../config.h', '../../win32/config.h')
|
||
|
|
git('add', '../../win32/config.h')
|
||
|
|
shutil.move('../include/libxml/xmlversion.h',
|
||
|
|
'../../win32/include/libxml/xmlversion.h')
|
||
|
|
git('add', '../../win32/include/libxml/xmlversion.h')
|
||
|
|
git('commit', '--allow-empty', '-m', 'Windows')
|
||
|
|
git('clean', '-f')
|
||
|
|
print('Now push to Mac and run steps there.')
|
||
|
|
|
||
|
|
|
||
|
|
def roll_libxml_mac(src_path, icu4c_path):
|
||
|
|
icu4c_path = os.path.abspath(os.path.expanduser(icu4c_path))
|
||
|
|
os.environ["LDFLAGS"] = "-L" + os.path.join(icu4c_path, 'lib')
|
||
|
|
os.environ["CPPFLAGS"] = "-I" + os.path.join(icu4c_path, 'include')
|
||
|
|
os.environ["PKG_CONFIG_PATH"] = os.path.join(icu4c_path, 'lib/pkgconfig')
|
||
|
|
|
||
|
|
full_path_to_third_party_libxml = os.path.join(
|
||
|
|
src_path, THIRD_PARTY_LIBXML_SRC, '..')
|
||
|
|
|
||
|
|
with WorkingDir(os.path.join(full_path_to_third_party_libxml, 'mac')):
|
||
|
|
subprocess.check_call(['autoreconf', '-i', '../src'])
|
||
|
|
os.chmod('../src/configure',
|
||
|
|
os.stat('../src/configure').st_mode | stat.S_IXUSR)
|
||
|
|
subprocess.check_call(['../src/configure'] + XML_CONFIGURE_OPTIONS)
|
||
|
|
sed_in_place('config.h', 's/#define HAVE_RAND_R 1//')
|
||
|
|
|
||
|
|
with WorkingDir(full_path_to_third_party_libxml):
|
||
|
|
commit = subprocess.check_output(
|
||
|
|
['awk', '/Version:/ {print $2}',
|
||
|
|
'README.chromium']).decode('ascii')
|
||
|
|
remove_tracked_files(FILES_TO_REMOVE)
|
||
|
|
commit_message = 'Roll libxml to %s' % commit
|
||
|
|
git('commit', '-am', commit_message)
|
||
|
|
print('Now upload for review, etc.')
|
||
|
|
|
||
|
|
|
||
|
|
def check_clean(path):
|
||
|
|
with WorkingDir(path):
|
||
|
|
status = subprocess.check_output(['git', 'status',
|
||
|
|
'-s']).decode('ascii')
|
||
|
|
if len(status) > 0:
|
||
|
|
raise Exception('repository at %s is not clean' % path)
|
||
|
|
|
||
|
|
|
||
|
|
def main():
|
||
|
|
src_dir = os.getcwd()
|
||
|
|
if not os.path.exists(os.path.join(src_dir, 'third_party')):
|
||
|
|
print('error: run this script from the Chromium src directory')
|
||
|
|
sys.exit(1)
|
||
|
|
|
||
|
|
parser = argparse.ArgumentParser(
|
||
|
|
description='Roll the libxml2 dependency in Chromium')
|
||
|
|
platform = parser.add_mutually_exclusive_group(required=True)
|
||
|
|
platform.add_argument('--linux', action='store_true')
|
||
|
|
platform.add_argument('--win32', action='store_true')
|
||
|
|
platform.add_argument('--mac', action='store_true')
|
||
|
|
parser.add_argument(
|
||
|
|
'libxml2_repo_path',
|
||
|
|
type=str,
|
||
|
|
nargs='?',
|
||
|
|
help='The path to the local clone of the libxml2 git repo.')
|
||
|
|
parser.add_argument(
|
||
|
|
'--icu4c_path',
|
||
|
|
help='The path to the homebrew installation of icu4c.')
|
||
|
|
args = parser.parse_args()
|
||
|
|
|
||
|
|
if args.linux:
|
||
|
|
libxml2_repo_path = args.libxml2_repo_path
|
||
|
|
if not libxml2_repo_path:
|
||
|
|
print('Specify the path to the local libxml2 repo clone.')
|
||
|
|
sys.exit(1)
|
||
|
|
libxml2_repo_path = os.path.abspath(libxml2_repo_path)
|
||
|
|
roll_libxml_linux(src_dir, libxml2_repo_path)
|
||
|
|
elif args.win32:
|
||
|
|
roll_libxml_win32(src_dir)
|
||
|
|
elif args.mac:
|
||
|
|
icu4c_path = args.icu4c_path
|
||
|
|
if not icu4c_path:
|
||
|
|
print('Specify the path to the homebrew installation of icu4c with --icu4c_path.')
|
||
|
|
print(' ex: roll.py --mac --icu4c_path=~/homebrew/opt/icu4c')
|
||
|
|
sys.exit(1)
|
||
|
|
roll_libxml_mac(src_dir, icu4c_path)
|
||
|
|
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
main()
|