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JarMaker.py
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# 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/.
'''jarmaker.py provides a python class to package up chrome content by
processing jar.mn files.
See the documentation for jar.mn on MDC for further details on the format.
'''
import sys
import os
import os.path
import errno
import re
import logging
from time import localtime
from optparse import OptionParser
from MozZipFile import ZipFile
from cStringIO import StringIO
from datetime import datetime
from utils import pushback_iter, lockFile
from Preprocessor import Preprocessor
from buildlist import addEntriesToListFile
if sys.platform == "win32":
from ctypes import windll, WinError
CreateHardLink = windll.kernel32.CreateHardLinkA
__all__ = ['JarMaker']
class ZipEntry:
'''Helper class for jar output.
This class defines a simple file-like object for a zipfile.ZipEntry
so that we can consecutively write to it and then close it.
This methods hooks into ZipFile.writestr on close().
'''
def __init__(self, name, zipfile):
self._zipfile = zipfile
self._name = name
self._inner = StringIO()
def write(self, content):
'Append the given content to this zip entry'
self._inner.write(content)
return
def close(self):
'The close method writes the content back to the zip file.'
self._zipfile.writestr(self._name, self._inner.getvalue())
def getModTime(aPath):
if not os.path.isfile(aPath):
return 0
mtime = os.stat(aPath).st_mtime
return localtime(mtime)
class JarMaker(object):
'''JarMaker reads jar.mn files and process those into jar files or
flat directories, along with chrome.manifest files.
'''
ignore = re.compile('\s*(\#.*)?$')
jarline = re.compile('(?:(?P<jarfile>[\w\d.\-\_\\\/]+).jar\:)|(?:\s*(\#.*)?)\s*$')
relsrcline = re.compile('relativesrcdir\s+(?P<relativesrcdir>.+?):')
regline = re.compile('\%\s+(.*)$')
entryre = '(?P<optPreprocess>\*)?(?P<optOverwrite>\+?)\s+'
entryline = re.compile(entryre + '(?P<output>[\w\d.\-\_\\\/\+\@]+)\s*(\((?P<locale>\%?)(?P<source>[\w\d.\-\_\\\/\@]+)\))?\s*$')
def __init__(self, outputFormat = 'flat', useJarfileManifest = True,
useChromeManifest = False):
self.outputFormat = outputFormat
self.useJarfileManifest = useJarfileManifest
self.useChromeManifest = useChromeManifest
self.pp = Preprocessor()
self.topsourcedir = None
self.sourcedirs = []
self.localedirs = None
self.l10nbase = None
self.l10nmerge = None
self.relativesrcdir = None
self.rootManifestAppId = None
def getCommandLineParser(self):
'''Get a optparse.OptionParser for jarmaker.
This OptionParser has the options for jarmaker as well as
the options for the inner PreProcessor.
'''
# HACK, we need to unescape the string variables we get,
# the perl versions didn't grok strings right
p = self.pp.getCommandLineParser(unescapeDefines = True)
p.add_option('-f', type="choice", default="jar",
choices=('jar', 'flat', 'symlink'),
help="fileformat used for output", metavar="[jar, flat, symlink]")
p.add_option('-v', action="store_true", dest="verbose",
help="verbose output")
p.add_option('-q', action="store_false", dest="verbose",
help="verbose output")
p.add_option('-e', action="store_true",
help="create chrome.manifest instead of jarfile.manifest")
p.add_option('--both-manifests', action="store_true",
dest="bothManifests",
help="create chrome.manifest and jarfile.manifest")
p.add_option('-s', type="string", action="append", default=[],
help="source directory")
p.add_option('-t', type="string",
help="top source directory")
p.add_option('-c', '--l10n-src', type="string", action="append",
help="localization directory")
p.add_option('--l10n-base', type="string", action="store",
help="base directory to be used for localization (requires relativesrcdir)")
p.add_option('--locale-mergedir', type="string", action="store",
help="base directory to be used for l10n-merge (requires l10n-base and relativesrcdir)")
p.add_option('--relativesrcdir', type="string",
help="relativesrcdir to be used for localization")
p.add_option('-j', type="string",
help="jarfile directory")
p.add_option('--root-manifest-entry-appid', type="string",
help="add an app id specific root chrome manifest entry.")
return p
def processIncludes(self, includes):
'''Process given includes with the inner PreProcessor.
Only use this for #defines, the includes shouldn't generate
content.
'''
self.pp.out = StringIO()
for inc in includes:
self.pp.do_include(inc)
includesvalue = self.pp.out.getvalue()
if includesvalue:
logging.info("WARNING: Includes produce non-empty output")
self.pp.out = None
pass
def finalizeJar(self, jarPath, chromebasepath, register,
doZip=True):
'''Helper method to write out the chrome registration entries to
jarfile.manifest or chrome.manifest, or both.
The actual file processing is done in updateManifest.
'''
# rewrite the manifest, if entries given
if not register:
return
chromeManifest = os.path.join(os.path.dirname(jarPath),
'..', 'chrome.manifest')
if self.useJarfileManifest:
self.updateManifest(jarPath + '.manifest', chromebasepath.format(''),
register)
addEntriesToListFile(chromeManifest, ['manifest chrome/{0}.manifest'
.format(os.path.basename(jarPath))])
if self.useChromeManifest:
self.updateManifest(chromeManifest, chromebasepath.format('chrome/'),
register)
# If requested, add a root chrome manifest entry (assumed to be in the parent directory
# of chromeManifest) with the application specific id. In cases where we're building
# lang packs, the root manifest must know about application sub directories.
if self.rootManifestAppId:
rootChromeManifest = os.path.join(os.path.normpath(os.path.dirname(chromeManifest)),
'..', 'chrome.manifest')
rootChromeManifest = os.path.normpath(rootChromeManifest)
chromeDir = os.path.basename(os.path.dirname(os.path.normpath(chromeManifest)))
logging.info("adding '%s' entry to root chrome manifest appid=%s" % (chromeDir, self.rootManifestAppId))
addEntriesToListFile(rootChromeManifest, ['manifest %s/chrome.manifest application=%s' % (chromeDir, self.rootManifestAppId)])
def updateManifest(self, manifestPath, chromebasepath, register):
'''updateManifest replaces the % in the chrome registration entries
with the given chrome base path, and updates the given manifest file.
'''
lock = lockFile(manifestPath + '.lck')
try:
myregister = dict.fromkeys(map(lambda s: s.replace('%', chromebasepath),
register.iterkeys()))
manifestExists = os.path.isfile(manifestPath)
mode = (manifestExists and 'r+b') or 'wb'
mf = open(manifestPath, mode)
if manifestExists:
# import previous content into hash, ignoring empty ones and comments
imf = re.compile('(#.*)?$')
for l in re.split('[\r\n]+', mf.read()):
if imf.match(l):
continue
myregister[l] = None
mf.seek(0)
for k in myregister.iterkeys():
mf.write(k + os.linesep)
mf.close()
finally:
lock = None
def makeJar(self, infile, jardir):
'''makeJar is the main entry point to JarMaker.
It takes the input file, the output directory, the source dirs and the
top source dir as argument, and optionally the l10n dirs.
'''
# making paths absolute, guess srcdir if file and add to sourcedirs
_normpath = lambda p: os.path.normpath(os.path.abspath(p))
self.topsourcedir = _normpath(self.topsourcedir)
self.sourcedirs = [_normpath(p) for p in self.sourcedirs]
if self.localedirs:
self.localedirs = [_normpath(p) for p in self.localedirs]
elif self.relativesrcdir:
self.localedirs = self.generateLocaleDirs(self.relativesrcdir)
if isinstance(infile, basestring):
logging.info("processing " + infile)
self.sourcedirs.append(_normpath(os.path.dirname(infile)))
pp = self.pp.clone()
pp.out = StringIO()
pp.do_include(infile)
lines = pushback_iter(pp.out.getvalue().splitlines())
try:
while True:
l = lines.next()
m = self.jarline.match(l)
if not m:
raise RuntimeError(l)
if m.group('jarfile') is None:
# comment
continue
self.processJarSection(m.group('jarfile'), lines, jardir)
except StopIteration:
# we read the file
pass
return
def generateLocaleDirs(self, relativesrcdir):
if os.path.basename(relativesrcdir) == 'locales':
# strip locales
l10nrelsrcdir = os.path.dirname(relativesrcdir)
else:
l10nrelsrcdir = relativesrcdir
locdirs = []
# generate locales dirs, merge, l10nbase, en-US
if self.l10nmerge:
locdirs.append(os.path.join(self.l10nmerge, l10nrelsrcdir))
if self.l10nbase:
locdirs.append(os.path.join(self.l10nbase, l10nrelsrcdir))
if self.l10nmerge or not self.l10nbase:
# add en-US if we merge, or if it's not l10n
locdirs.append(os.path.join(self.topsourcedir, relativesrcdir, 'en-US'))
return locdirs
def processJarSection(self, jarfile, lines, jardir):
'''Internal method called by makeJar to actually process a section
of a jar.mn file.
jarfile is the basename of the jarfile or the directory name for
flat output, lines is a pushback_iterator of the lines of jar.mn,
the remaining options are carried over from makeJar.
'''
# chromebasepath is used for chrome registration manifests
# {0} is getting replaced with chrome/ for chrome.manifest, and with
# an empty string for jarfile.manifest
chromebasepath = '{0}' + os.path.basename(jarfile)
if self.outputFormat == 'jar':
chromebasepath = 'jar:' + chromebasepath + '.jar!'
chromebasepath += '/'
jarfile = os.path.join(jardir, jarfile)
jf = None
if self.outputFormat == 'jar':
#jar
jarfilepath = jarfile + '.jar'
try:
os.makedirs(os.path.dirname(jarfilepath))
except OSError as error:
if error.errno != errno.EEXIST:
raise
jf = ZipFile(jarfilepath, 'a', lock = True)
outHelper = self.OutputHelper_jar(jf)
else:
outHelper = getattr(self, 'OutputHelper_' + self.outputFormat)(jarfile)
register = {}
# This loop exits on either
# - the end of the jar.mn file
# - an line in the jar.mn file that's not part of a jar section
# - on an exception raised, close the jf in that case in a finally
try:
while True:
try:
l = lines.next()
except StopIteration:
# we're done with this jar.mn, and this jar section
self.finalizeJar(jarfile, chromebasepath, register)
if jf is not None:
jf.close()
# reraise the StopIteration for makeJar
raise
if self.ignore.match(l):
continue
m = self.relsrcline.match(l)
if m:
relativesrcdir = m.group('relativesrcdir')
self.localedirs = self.generateLocaleDirs(relativesrcdir)
continue
m = self.regline.match(l)
if m:
rline = m.group(1)
register[rline] = 1
continue
m = self.entryline.match(l)
if not m:
# neither an entry line nor chrome reg, this jar section is done
self.finalizeJar(jarfile, chromebasepath, register)
if jf is not None:
jf.close()
lines.pushback(l)
return
self._processEntryLine(m, outHelper, jf)
finally:
if jf is not None:
jf.close()
return
def _processEntryLine(self, m, outHelper, jf):
out = m.group('output')
src = m.group('source') or os.path.basename(out)
# pick the right sourcedir -- l10n, topsrc or src
if m.group('locale'):
src_base = self.localedirs
elif src.startswith('/'):
# path/in/jar/file_name.xul (/path/in/sourcetree/file_name.xul)
# refers to a path relative to topsourcedir, use that as base
# and strip the leading '/'
src_base = [self.topsourcedir]
src = src[1:]
else:
# use srcdirs and the objdir (current working dir) for relative paths
src_base = self.sourcedirs + [os.getcwd()]
# check if the source file exists
realsrc = None
for _srcdir in src_base:
if os.path.isfile(os.path.join(_srcdir, src)):
realsrc = os.path.join(_srcdir, src)
break
if realsrc is None:
if jf is not None:
jf.close()
raise RuntimeError('File "{0}" not found in {1}'
.format(src, ', '.join(src_base)))
if m.group('optPreprocess'):
outf = outHelper.getOutput(out)
inf = open(realsrc)
pp = self.pp.clone()
if src[-4:] == '.css':
pp.setMarker('%')
pp.out = outf
pp.do_include(inf)
pp.warnUnused(realsrc)
outf.close()
inf.close()
return
# copy or symlink if newer or overwrite
if (m.group('optOverwrite')
or (getModTime(realsrc) >
outHelper.getDestModTime(m.group('output')))):
if self.outputFormat == 'symlink':
outHelper.symlink(realsrc, out)
return
outf = outHelper.getOutput(out)
# open in binary mode, this can be images etc
inf = open(realsrc, 'rb')
outf.write(inf.read())
outf.close()
inf.close()
class OutputHelper_jar(object):
'''Provide getDestModTime and getOutput for a given jarfile.
'''
def __init__(self, jarfile):
self.jarfile = jarfile
def getDestModTime(self, aPath):
try :
info = self.jarfile.getinfo(aPath)
return info.date_time
except:
return 0
def getOutput(self, name):
return ZipEntry(name, self.jarfile)
class OutputHelper_flat(object):
'''Provide getDestModTime and getOutput for a given flat
output directory. The helper method ensureDirFor is used by
the symlink subclass.
'''
def __init__(self, basepath):
self.basepath = basepath
def getDestModTime(self, aPath):
return getModTime(os.path.join(self.basepath, aPath))
def getOutput(self, name):
out = self.ensureDirFor(name)
# remove previous link or file
try:
os.remove(out)
except OSError as e:
if e.errno != errno.ENOENT:
raise
return open(out, 'wb')
def ensureDirFor(self, name):
out = os.path.join(self.basepath, name)
outdir = os.path.dirname(out)
if not os.path.isdir(outdir):
try:
os.makedirs(outdir)
except OSError as error:
if error.errno != errno.EEXIST:
raise
return out
class OutputHelper_symlink(OutputHelper_flat):
'''Subclass of OutputHelper_flat that provides a helper for
creating a symlink including creating the parent directories.
'''
def symlink(self, src, dest):
out = self.ensureDirFor(dest)
# remove previous link or file
try:
os.remove(out)
except OSError as e:
if e.errno != errno.ENOENT:
raise
if sys.platform != "win32":
os.symlink(src, out)
else:
# On Win32, use ctypes to create a hardlink
rv = CreateHardLink(out, src, None)
if rv == 0:
raise WinError()
def main():
jm = JarMaker()
p = jm.getCommandLineParser()
(options, args) = p.parse_args()
jm.processIncludes(options.I)
jm.outputFormat = options.f
jm.sourcedirs = options.s
jm.topsourcedir = options.t
if options.e:
jm.useChromeManifest = True
jm.useJarfileManifest = False
if options.bothManifests:
jm.useChromeManifest = True
jm.useJarfileManifest = True
if options.l10n_base:
if not options.relativesrcdir:
p.error('relativesrcdir required when using l10n-base')
if options.l10n_src:
p.error('both l10n-src and l10n-base are not supported')
jm.l10nbase = options.l10n_base
jm.relativesrcdir = options.relativesrcdir
jm.l10nmerge = options.locale_mergedir
elif options.locale_mergedir:
p.error('l10n-base required when using locale-mergedir')
jm.localedirs = options.l10n_src
if options.root_manifest_entry_appid:
jm.rootManifestAppId = options.root_manifest_entry_appid
noise = logging.INFO
if options.verbose is not None:
noise = (options.verbose and logging.DEBUG) or logging.WARN
if sys.version_info[:2] > (2,3):
logging.basicConfig(format = "%(message)s")
else:
logging.basicConfig()
logging.getLogger().setLevel(noise)
topsrc = options.t
topsrc = os.path.normpath(os.path.abspath(topsrc))
if not args:
infile = sys.stdin
else:
infile, = args
jm.makeJar(infile, options.j)
if __name__ == "__main__":
main()

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