diff options
Diffstat (limited to 'python/mozbuild/mozpack/packager/formats.py')
| -rw-r--r-- | python/mozbuild/mozpack/packager/formats.py | 324 |
1 files changed, 324 insertions, 0 deletions
diff --git a/python/mozbuild/mozpack/packager/formats.py b/python/mozbuild/mozpack/packager/formats.py new file mode 100644 index 000000000..c4adabab0 --- /dev/null +++ b/python/mozbuild/mozpack/packager/formats.py @@ -0,0 +1,324 @@ +# This Source Code Form is subject to the terms of the Mozilla Public +# License, v. 2.0. If a copy of the MPL was not distributed with this +# file, You can obtain one at http://mozilla.org/MPL/2.0/. + +from __future__ import absolute_import + +from mozpack.chrome.manifest import ( + Manifest, + ManifestInterfaces, + ManifestChrome, + ManifestBinaryComponent, + ManifestResource, +) +from urlparse import urlparse +import mozpack.path as mozpath +from mozpack.files import ( + ManifestFile, + XPTFile, +) +from mozpack.copier import ( + FileRegistry, + FileRegistrySubtree, + Jarrer, +) + +STARTUP_CACHE_PATHS = [ + 'jsloader', + 'jssubloader', +] + +''' +Formatters are classes receiving packaging instructions and creating the +appropriate package layout. + +There are three distinct formatters, each handling one of the different chrome +formats: + - flat: essentially, copies files from the source with the same file system + layout. Manifests entries are grouped in a single manifest per directory, + as well as XPT interfaces. + - jar: chrome content is packaged in jar files. + - omni: chrome content, modules, non-binary components, and many other + elements are packaged in an omnijar file for each base directory. + +The base interface provides the following methods: + - add_base(path [, addon]) + Register a base directory for an application or GRE, or an addon. + Base directories usually contain a root manifest (manifests not + included in any other manifest) named chrome.manifest. + The optional addon argument tells whether the base directory + is that of a packed addon (True), unpacked addon ('unpacked') or + otherwise (False). + - add(path, content) + Add the given content (BaseFile instance) at the given virtual path + - add_interfaces(path, content) + Add the given content (BaseFile instance) and link it to other + interfaces in the parent directory of the given virtual path. + - add_manifest(entry) + Add a ManifestEntry. + - contains(path) + Returns whether the given virtual path is known of the formatter. + +The virtual paths mentioned above are paths as they would be with a flat +chrome. + +Formatters all take a FileCopier instance they will fill with the packaged +data. +''' + + +class PiecemealFormatter(object): + ''' + Generic formatter that dispatches across different sub-formatters + according to paths. + ''' + def __init__(self, copier): + assert isinstance(copier, (FileRegistry, FileRegistrySubtree)) + self.copier = copier + self._sub_formatter = {} + self._frozen_bases = False + + def add_base(self, base, addon=False): + # Only allow to add a base directory before calls to _get_base() + assert not self._frozen_bases + assert base not in self._sub_formatter + self._add_base(base, addon) + + def _get_base(self, path): + ''' + Return the deepest base directory containing the given path. + ''' + self._frozen_bases = True + base = mozpath.basedir(path, self._sub_formatter.keys()) + relpath = mozpath.relpath(path, base) if base else path + return base, relpath + + def add(self, path, content): + base, relpath = self._get_base(path) + if base is None: + return self.copier.add(relpath, content) + return self._sub_formatter[base].add(relpath, content) + + def add_manifest(self, entry): + base, relpath = self._get_base(entry.base) + assert base is not None + return self._sub_formatter[base].add_manifest(entry.move(relpath)) + + def add_interfaces(self, path, content): + base, relpath = self._get_base(path) + assert base is not None + return self._sub_formatter[base].add_interfaces(relpath, content) + + def contains(self, path): + assert '*' not in path + base, relpath = self._get_base(path) + if base is None: + return self.copier.contains(relpath) + return self._sub_formatter[base].contains(relpath) + + +class FlatFormatter(PiecemealFormatter): + ''' + Formatter for the flat package format. + ''' + def _add_base(self, base, addon=False): + self._sub_formatter[base] = FlatSubFormatter( + FileRegistrySubtree(base, self.copier)) + + +class FlatSubFormatter(object): + ''' + Sub-formatter for the flat package format. + ''' + def __init__(self, copier): + assert isinstance(copier, (FileRegistry, FileRegistrySubtree)) + self.copier = copier + + def add(self, path, content): + self.copier.add(path, content) + + def add_manifest(self, entry): + # Store manifest entries in a single manifest per directory, named + # after their parent directory, except for root manifests, all named + # chrome.manifest. + if entry.base: + name = mozpath.basename(entry.base) + else: + name = 'chrome' + path = mozpath.normpath(mozpath.join(entry.base, '%s.manifest' % name)) + if not self.copier.contains(path): + # Add a reference to the manifest file in the parent manifest, if + # the manifest file is not a root manifest. + if entry.base: + parent = mozpath.dirname(entry.base) + relbase = mozpath.basename(entry.base) + relpath = mozpath.join(relbase, + mozpath.basename(path)) + self.add_manifest(Manifest(parent, relpath)) + self.copier.add(path, ManifestFile(entry.base)) + self.copier[path].add(entry) + + def add_interfaces(self, path, content): + # Interfaces in the same directory are all linked together in an + # interfaces.xpt file. + interfaces_path = mozpath.join(mozpath.dirname(path), + 'interfaces.xpt') + if not self.copier.contains(interfaces_path): + self.add_manifest(ManifestInterfaces(mozpath.dirname(path), + 'interfaces.xpt')) + self.copier.add(interfaces_path, XPTFile()) + self.copier[interfaces_path].add(content) + + def contains(self, path): + assert '*' not in path + return self.copier.contains(path) + + +class JarFormatter(PiecemealFormatter): + ''' + Formatter for the jar package format. Assumes manifest entries related to + chrome are registered before the chrome data files are added. Also assumes + manifest entries for resources are registered after chrome manifest + entries. + ''' + def __init__(self, copier, compress=True, optimize=True): + PiecemealFormatter.__init__(self, copier) + self._compress=compress + self._optimize=optimize + + def _add_base(self, base, addon=False): + if addon is True: + jarrer = Jarrer(self._compress, self._optimize) + self.copier.add(base + '.xpi', jarrer) + self._sub_formatter[base] = FlatSubFormatter(jarrer) + else: + self._sub_formatter[base] = JarSubFormatter( + FileRegistrySubtree(base, self.copier), + self._compress, self._optimize) + + +class JarSubFormatter(PiecemealFormatter): + ''' + Sub-formatter for the jar package format. It is a PiecemealFormatter that + dispatches between further sub-formatter for each of the jar files it + dispatches the chrome data to, and a FlatSubFormatter for the non-chrome + files. + ''' + def __init__(self, copier, compress=True, optimize=True): + PiecemealFormatter.__init__(self, copier) + self._frozen_chrome = False + self._compress = compress + self._optimize = optimize + self._sub_formatter[''] = FlatSubFormatter(copier) + + def _jarize(self, entry, relpath): + ''' + Transform a manifest entry in one pointing to chrome data in a jar. + Return the corresponding chrome path and the new entry. + ''' + base = entry.base + basepath = mozpath.split(relpath)[0] + chromepath = mozpath.join(base, basepath) + entry = entry.rebase(chromepath) \ + .move(mozpath.join(base, 'jar:%s.jar!' % basepath)) \ + .rebase(base) + return chromepath, entry + + def add_manifest(self, entry): + if isinstance(entry, ManifestChrome) and \ + not urlparse(entry.relpath).scheme: + chromepath, entry = self._jarize(entry, entry.relpath) + assert not self._frozen_chrome + if chromepath not in self._sub_formatter: + jarrer = Jarrer(self._compress, self._optimize) + self.copier.add(chromepath + '.jar', jarrer) + self._sub_formatter[chromepath] = FlatSubFormatter(jarrer) + elif isinstance(entry, ManifestResource) and \ + not urlparse(entry.target).scheme: + chromepath, new_entry = self._jarize(entry, entry.target) + if chromepath in self._sub_formatter: + entry = new_entry + PiecemealFormatter.add_manifest(self, entry) + + +class OmniJarFormatter(JarFormatter): + ''' + Formatter for the omnijar package format. + ''' + def __init__(self, copier, omnijar_name, compress=True, optimize=True, + non_resources=()): + JarFormatter.__init__(self, copier, compress, optimize) + self._omnijar_name = omnijar_name + self._non_resources = non_resources + + def _add_base(self, base, addon=False): + if addon: + JarFormatter._add_base(self, base, addon) + else: + # Initialize a chrome.manifest next to the omnijar file so that + # there's always a chrome.manifest file, even an empty one. + path = mozpath.normpath(mozpath.join(base, 'chrome.manifest')) + if not self.copier.contains(path): + self.copier.add(path, ManifestFile('')) + self._sub_formatter[base] = OmniJarSubFormatter( + FileRegistrySubtree(base, self.copier), self._omnijar_name, + self._compress, self._optimize, self._non_resources) + + +class OmniJarSubFormatter(PiecemealFormatter): + ''' + Sub-formatter for the omnijar package format. It is a PiecemealFormatter + that dispatches between a FlatSubFormatter for the resources data and + another FlatSubFormatter for the other files. + ''' + def __init__(self, copier, omnijar_name, compress=True, optimize=True, + non_resources=()): + PiecemealFormatter.__init__(self, copier) + self._omnijar_name = omnijar_name + self._compress = compress + self._optimize = optimize + self._non_resources = non_resources + self._sub_formatter[''] = FlatSubFormatter(copier) + jarrer = Jarrer(self._compress, self._optimize) + self._sub_formatter[omnijar_name] = FlatSubFormatter(jarrer) + + def _get_base(self, path): + base = self._omnijar_name if self.is_resource(path) else '' + # Only add the omnijar file if something ends up in it. + if base and not self.copier.contains(base): + self.copier.add(base, self._sub_formatter[base].copier) + return base, path + + def add_manifest(self, entry): + base = '' + if not isinstance(entry, ManifestBinaryComponent): + base = self._omnijar_name + formatter = self._sub_formatter[base] + return formatter.add_manifest(entry) + + def is_resource(self, path): + ''' + Return whether the given path corresponds to a resource to be put in an + omnijar archive. + ''' + if any(mozpath.match(path, p.replace('*', '**')) + for p in self._non_resources): + return False + path = mozpath.split(path) + if path[0] == 'chrome': + return len(path) == 1 or path[1] != 'icons' + if path[0] == 'components': + return path[-1].endswith(('.js', '.xpt')) + if path[0] == 'res': + return len(path) == 1 or \ + (path[1] != 'cursors' and path[1] != 'MainMenu.nib') + if path[0] == 'defaults': + return len(path) != 3 or \ + not (path[2] == 'channel-prefs.js' and + path[1] in ['pref', 'preferences']) + return path[0] in [ + 'modules', + 'greprefs.js', + 'hyphenation', + 'update.locale', + ] or path[0] in STARTUP_CACHE_PATHS |