author Mike Hommey <>
Fri, 23 Jun 2017 15:05:06 +0900
changeset 366422 374900b2142af725d4136758ac00dce2fbb824be
parent 176445 2c0cad37a4faceb63721b440f60ae8c80f688c6d
child 381511 6f71235ab648e765dfe898a730b197b5cc46f6e3
permissions -rwxr-xr-x
Bug 1375798 - Reorganize the library_name_info function. r=mshal The function as it currently is matches how things were done in However, that's just confusing and hard to follow. In fact, the unit test failing numerous times while writing this patch pretty much highlights the problem. So instead of a confusing set of overrides to the prefixes and suffixes, spell out the whole set for each set of platforms. This also happens to make the function shorter. Win/win. At the same time, we normalize the function output as a nested namespace, where we get, for each of dll, lib, import_lib, etc. a prefix/suffix pair. Further down the road, we can imagine changing those to class instances with a method allowing to format file names based on those prefix/suffixes.

# 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

LIBFFI_DIRS = (('js/ctypes/libffi', 'libffi'),)
HG_EXCLUSIONS = ['.hg', '.hgignore', '.hgtags']


import os
import sys
import datetime
import shutil
import glob
from optparse import OptionParser
from subprocess import check_call

topsrcdir = os.path.dirname(__file__)
if topsrcdir == '':
    topsrcdir = '.'

def check_call_noisy(cmd, *args, **kwargs):
    print "Executing command:", cmd
    check_call(cmd, *args, **kwargs)

def do_hg_pull(dir, repository, hg):
    fulldir = os.path.join(topsrcdir, dir)
    # clone if the dir doesn't exist, pull if it does
    if not os.path.exists(fulldir):
        check_call_noisy([hg, 'clone', repository, fulldir])
        cmd = [hg, 'pull', '-u', '-R', fulldir]
        if repository is not None:
    check_call([hg, 'parent', '-R', fulldir,
                '--template=Updated to revision {node}.\n'])

def do_hg_replace(dir, repository, tag, exclusions, hg):
        Replace the contents of dir with the contents of repository, except for
        files matching exclusions.
    fulldir = os.path.join(topsrcdir, dir)
    if os.path.exists(fulldir):

    assert not os.path.exists(fulldir)
    check_call_noisy([hg, 'clone', '-u', tag, repository, fulldir])

    for thing in exclusions:
        for excluded in glob.iglob(os.path.join(fulldir, thing)):
            if os.path.isdir(excluded):

def do_cvs_export(modules, tag, cvsroot, cvs):
    """Check out a CVS directory without CVS metadata, using "export"
    modules is a list of directories to check out and the corresponding
    cvs module, e.g. (('js/ctypes/libffi', 'libffi'),)
    for module_tuple in modules:
        module = module_tuple[0]
        cvs_module = module_tuple[1]
        fullpath = os.path.join(topsrcdir, module)
        if os.path.exists(fullpath):
            print "Removing '%s'" % fullpath

        (parent, leaf) = os.path.split(module)
        print "CVS export begin: " + datetime.datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S UTC")
        check_call_noisy([cvs, '-d', cvsroot,
                          'export', '-r', tag, '-d', leaf, cvs_module],
                         cwd=os.path.join(topsrcdir, parent))
        print "CVS export end: " + datetime.datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S UTC")

def toggle_trailing_blank_line(depname):
  """If the trailing line is empty, then we'll delete it.
  Otherwise we'll add a blank line."""
  lines = open(depname, "r").readlines()
  if not lines:
      print >>sys.stderr, "unexpected short file"

  if not lines[-1].strip():
      # trailing line is blank, removing it
      open(depname, "wb").writelines(lines[:-1])
      # adding blank line
      open(depname, "ab").write("\n")

def get_trailing_blank_line_state(depname):
  lines = open(depname, "r").readlines()
  if not lines:
      print >>sys.stderr, "unexpected short file"
      return "no blank line"

  if not lines[-1].strip():
      return "has blank line"
      return "no blank line"

def update_nspr_or_nss(tag, depfile, destination, hgpath):
  print "reverting to HG version of %s to get its blank line state" % depfile
  check_call_noisy([options.hg, 'revert', depfile])
  old_state = get_trailing_blank_line_state(depfile)
  print "old state of %s is: %s" % (depfile, old_state)
  do_hg_replace(destination, hgpath, tag, HG_EXCLUSIONS, options.hg)
  new_state = get_trailing_blank_line_state(depfile)
  print "new state of %s is: %s" % (depfile, new_state)
  if old_state == new_state:
    print "toggling blank line in: ", depfile
  tag_file = destination + "/TAG-INFO"
  print >>file(tag_file, "w"), tag

o = OptionParser(usage=" [options] update_nspr tagname | update_nss tagname | update_libffi tagname")
o.add_option("--skip-mozilla", dest="skip_mozilla",
             action="store_true", default=False,

o.add_option("--cvs", dest="cvs", default=os.environ.get('CVS', 'cvs'),
             help="The location of the cvs binary")
o.add_option("--cvsroot", dest="cvsroot",
             help="The CVSROOT for libffi (default : %s)" % CVSROOT_LIBFFI)
o.add_option("--hg", dest="hg", default=os.environ.get('HG', 'hg'),
             help="The location of the hg binary")
o.add_option("--repo", dest="repo",
             help="the repo to update from (default: upstream repo)")

    options, args = o.parse_args()
    action = args[0]
except IndexError:

if action in ('checkout', 'co'):
    print >>sys.stderr, "Warning: checkout is obsolete."
elif action in ('update_nspr'):
    tag, = args[1:]
    depfile = "nsprpub/config/prdepend.h"
    if not options.repo:
        options.repo = ''
    update_nspr_or_nss(tag, depfile, 'nsprpub', options.repo)
elif action in ('update_nss'):
    tag, = args[1:]
    depfile = "security/nss/coreconf/coreconf.dep"
    if not options.repo:
	    options.repo = ''
    update_nspr_or_nss(tag, depfile, 'security/nss', options.repo)
elif action in ('update_libffi'):
    tag, = args[1:]
    if not options.cvsroot:
        options.cvsroot = CVSROOT_LIBFFI
    do_cvs_export(LIBFFI_DIRS, tag, options.cvsroot, options.cvs)