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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
import json
import os
import re
import mozpack.path as mozpath
import six
from mach.config import ConfigSettings
from mach.logging import LoggingManager
from mozpack.copier import FileRegistry
from mozpack.files import PreprocessedFile
from mozpack.manifests import InstallManifest
from mozbuild.backend.common import CommonBackend
from mozbuild.base import MozbuildObject
from mozbuild.frontend.data import (
ChromeManifestEntry,
FinalTargetFiles,
FinalTargetPreprocessedFiles,
JARManifest,
)
from .manifest_handler import ChromeManifestHandler
_line_comment_re = re.compile(r'^//@line (\d+) "(.+)"$')
def generate_pp_info(path, topsrcdir):
with open(path, encoding="utf-8") as fh:
# (start, end) -> (included_source, start)
section_info = dict()
this_section = None
def finish_section(pp_end):
pp_start, inc_source, inc_start = this_section
section_info[str(pp_start) + "," + str(pp_end)] = inc_source, inc_start
for count, line in enumerate(fh):
# Regex are quite slow, so bail out early.
if not line.startswith("//@line"):
continue
m = re.match(_line_comment_re, line)
if m:
if this_section:
finish_section(count + 1)
inc_start, inc_source = m.groups()
# Special case to handle $SRCDIR prefixes
src_dir_prefix = "$SRCDIR"
parts = mozpath.split(inc_source)
if parts[0] == src_dir_prefix:
inc_source = mozpath.join(*parts[1:])
else:
inc_source = mozpath.relpath(inc_source, topsrcdir)
pp_start = count + 2
this_section = pp_start, inc_source, int(inc_start)
if this_section:
finish_section(count + 2)
return section_info
# This build backend is assuming the build to have happened already, as it is parsing
# built preprocessed files to generate data to map them to the original sources.
class ChromeMapBackend(CommonBackend):
def _init(self):
CommonBackend._init(self)
log_manager = LoggingManager()
self._cmd = MozbuildObject(
self.environment.topsrcdir,
ConfigSettings(),
log_manager,
self.environment.topobjdir,
)
self._install_mapping = {}
self.manifest_handler = ChromeManifestHandler()
def consume_object(self, obj):
if isinstance(obj, JARManifest):
self._consume_jar_manifest(obj)
if isinstance(obj, ChromeManifestEntry):
self.manifest_handler.handle_manifest_entry(obj.entry)
if isinstance(obj, (FinalTargetFiles, FinalTargetPreprocessedFiles)):
self._handle_final_target_files(obj)
return True
def _handle_final_target_files(self, obj):
for path, files in obj.files.walk():
for f in files:
dest = mozpath.join(obj.install_target, path, f.target_basename)
obj_path = mozpath.join(self.environment.topobjdir, dest)
if obj_path.endswith(".in"):
obj_path = obj_path[:-3]
if isinstance(obj, FinalTargetPreprocessedFiles):
assert os.path.exists(obj_path), "%s should exist" % obj_path
pp_info = generate_pp_info(obj_path, obj.topsrcdir)
else:
pp_info = None
base = (
obj.topobjdir
if f.full_path.startswith(obj.topobjdir)
else obj.topsrcdir
)
self._install_mapping[dest] = (
mozpath.relpath(f.full_path, base),
pp_info,
)
def consume_finished(self):
mp = os.path.join(
self.environment.topobjdir, "_build_manifests", "install", "_tests"
)
install_manifest = InstallManifest(mp)
reg = FileRegistry()
install_manifest.populate_registry(reg)
for dest, src in reg:
if not hasattr(src, "path"):
continue
if not os.path.isabs(dest):
dest = "_tests/" + dest
obj_path = mozpath.join(self.environment.topobjdir, dest)
if isinstance(src, PreprocessedFile):
assert os.path.exists(obj_path), "%s should exist" % obj_path
pp_info = generate_pp_info(obj_path, self.environment.topsrcdir)
else:
pp_info = None
rel_src = mozpath.relpath(src.path, self.environment.topsrcdir)
self._install_mapping[dest] = rel_src, pp_info
# Our result has four parts:
# A map from url prefixes to objdir directories:
# A map of overrides.
# A map from objdir paths to sourcedir paths, and an object storing mapping
# information for preprocessed files:
# { "dist/bin/browser/chrome/browser/content/browser/aboutSessionRestore.js":
# [ "$topsrcdir/browser/components/sessionstore/content/aboutSessionRestore.js", {} ],
# ... }
# An object containing build configuration information.
outputfile = os.path.join(self.environment.topobjdir, "chrome-map.json")
with self._write_file(outputfile) as fh:
chrome_mapping = self.manifest_handler.chrome_mapping
overrides = self.manifest_handler.overrides
json.dump(
[
{k: list(v) for k, v in six.iteritems(chrome_mapping)},
overrides,
self._install_mapping,
{
"topobjdir": mozpath.normpath(self.environment.topobjdir),
"MOZ_APP_NAME": self.environment.substs.get("MOZ_APP_NAME"),
"OMNIJAR_NAME": self.environment.substs.get("OMNIJAR_NAME"),
"MOZ_MACBUNDLE_NAME": self.environment.substs.get(
"MOZ_MACBUNDLE_NAME"
),
},
],
fh,
sort_keys=True,
indent=2,
)