build/variables.py

   1 # This Source Code Form is subject to the terms of the Mozilla Public
   2 # License, v. 2.0. If a copy of the MPL was not distributed with this
   3 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
   4
   5 import os
   6 import subprocess
   7 import sys
   8 from datetime import datetime
   9
  10 SOURCESTAMP_FILENAME = "sourcestamp.txt"
  11
  12
  13 def buildid_header(output):
  14     buildid = os.environ.get("MOZ_BUILD_DATE")
  15     if buildid and len(buildid) != 14:
  16         print("Ignoring invalid MOZ_BUILD_DATE: %s" % buildid, file=sys.stderr)
  17         buildid = None
  18     if not buildid:
  19         buildid = datetime.now().strftime("%Y%m%d%H%M%S")
  20     output.write("#define MOZ_BUILDID %s\n" % buildid)
  21
  22
  23 def get_program_output(*command):
  24     try:
  25         with open(os.devnull) as stderr:
  26             return subprocess.check_output(
  27                 command, stderr=stderr, universal_newlines=True
  28             )
  29     except Exception:
  30         return ""
  31
  32
  33 def get_hg_info(workdir):
  34     repo = get_program_output("hg", "-R", workdir, "path", "default")
  35     if repo:
  36         repo = repo.strip()
  37         if repo.startswith("ssh://"):
  38             repo = "https://" + repo[6:]
  39         repo = repo.rstrip("/")
  40
  41     changeset = get_hg_changeset(workdir)
  42
  43     return repo, changeset
  44
  45
  46 def get_hg_changeset(path):
  47     return get_program_output("hg", "-R", path, "parent", "--template={node}")
  48
  49
  50 def get_info_from_sourcestamp(sourcestamp_path):
  51     """Read the repository and changelog information from the sourcestamp
  52     file. This assumes that the file exists and returns the results as a list
  53     (either strings or None in case of error).
  54     """
  55
  56     # Load the content of the file.
  57     lines = None
  58     with open(sourcestamp_path) as f:
  59         lines = f.read().splitlines()
  60
  61     # Parse the repo and the changeset. The sourcestamp file is supposed to
  62     # contain two lines: the first is the build id and the second is the source
  63     # URL.
  64     if len(lines) != 2 or not lines[1].startswith("http"):
  65         # Just return if the file doesn't contain what we expect.
  66         return None, None
  67
  68     # Return the repo and the changeset.
  69     return lines[1].split("/rev/")
  70
  71
  72 def source_repo_header(output):
  73     # We allow the source repo and changeset to be specified via the
  74     # environment (see configure)
  75     import buildconfig
  76
  77     repo = buildconfig.substs.get("MOZ_SOURCE_REPO")
  78     changeset = buildconfig.substs.get("MOZ_SOURCE_CHANGESET")
  79     source = ""
  80
  81     if not repo:
  82         sourcestamp_path = os.path.join(buildconfig.topsrcdir, SOURCESTAMP_FILENAME)
  83         if os.path.exists(os.path.join(buildconfig.topsrcdir, ".hg")):
  84             repo, changeset = get_hg_info(buildconfig.topsrcdir)
  85         elif os.path.exists(sourcestamp_path):
  86             repo, changeset = get_info_from_sourcestamp(sourcestamp_path)
  87     elif not changeset:
  88         changeset = get_hg_changeset(buildconfig.topsrcdir)
  89         if not changeset:
  90             raise Exception(
  91                 "could not resolve changeset; " "try setting MOZ_SOURCE_CHANGESET"
  92             )
  93
  94     if changeset:
  95         output.write("#define MOZ_SOURCE_STAMP %s\n" % changeset)
  96
  97     if repo and buildconfig.substs.get("MOZ_INCLUDE_SOURCE_INFO"):
  98         source = "%s/rev/%s" % (repo, changeset)
  99         output.write("#define MOZ_SOURCE_REPO %s\n" % repo)
 100         output.write("#define MOZ_SOURCE_URL %s\n" % source)
 101
 102
 103 def main(args):
 104     if len(args):
 105         func = globals().get(args[0])
 106         if func:
 107             return func(sys.stdout, *args[1:])
 108
 109
 110 if __name__ == "__main__":
 111     sys.exit(main(sys.argv[1:]))