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from __future__ import absolute_import, print_function
import codecs
from difflib import unified_diff
import logging
import os
import re
import shutil
import sys
import hglib
from mozboot.util import get_state_dir
import mozpack.path as mozpath
from compare_locales.merge import merge_channels
from compare_locales.paths.files import ProjectFiles
from compare_locales.paths.configparser import TOMLParser
from fluent.migrate import validator
from fluent.syntax import FluentParser, FluentSerializer
def inspect_migration(path):
'''Validate recipe and extract some metadata.
'''
return validator.Validator.validate(path)
def prepare_object_dir(cmd):
'''Prepare object dir to have an up-to-date clone of gecko-strings.
We run this once per mach invocation, for all tested migrations.
'''
obj_dir = mozpath.join(cmd.topobjdir, 'python', 'l10n')
if not os.path.exists(obj_dir):
os.makedirs(obj_dir)
state_dir = get_state_dir()
if os.path.exists(mozpath.join(state_dir, 'gecko-strings')):
cmd.run_process(
['hg', 'pull', '-u'],
cwd=mozpath.join(state_dir, 'gecko-strings')
)
else:
cmd.run_process(
['hg', 'clone', 'https://hg.mozilla.org/l10n/gecko-strings'],
cwd=state_dir,
)
return obj_dir
def diff_resources(left_path, right_path):
parser = FluentParser(with_spans=False)
serializer = FluentSerializer(with_junk=True)
lines = []
for p in (left_path, right_path):
with codecs.open(p, encoding='utf-8') as fh:
res = parser.parse(fh.read())
lines.append(serializer.serialize(res).splitlines(True))
sys.stdout.writelines(
chunk for chunk in unified_diff(lines[0], lines[1], left_path, right_path)
)
def test_migration(cmd, obj_dir, to_test, references):
'''Test the given recipe.
This creates a workdir by l10n-merging gecko-strings and the m-c source,
to mimmic gecko-strings after the patch to test landed.
It then runs the recipe with a gecko-strings clone as localization, both
dry and wet.
It inspects the generated commits, and shows a diff between the merged
reference and the generated content.
The diff is intended to be visually inspected. Some changes might be
expected, in particular when formatting of the en-US strings is different.
'''
rv = 0
migration_name = os.path.splitext(os.path.split(to_test)[1])[0]
work_dir = mozpath.join(obj_dir, migration_name)
paths = os.path.normpath(to_test).split(os.sep)
# Migration modules should be in a sub-folder of l10n.
migration_module = '.'.join(paths[paths.index('l10n')+1:-1]) + '.' + migration_name
if os.path.exists(work_dir):
shutil.rmtree(work_dir)
os.makedirs(mozpath.join(work_dir, 'reference'))
l10n_toml = mozpath.join(cmd.topsrcdir, cmd.substs['MOZ_BUILD_APP'], 'locales', 'l10n.toml')
pc = TOMLParser().parse(l10n_toml, env={
'l10n_base': work_dir
})
pc.set_locales(['reference'])
files = ProjectFiles('reference', [pc])
for ref in references:
if ref != mozpath.normpath(ref):
cmd.log(logging.ERROR, 'fluent-migration-test', {
'file': to_test,
'ref': ref,
}, 'Reference path "{ref}" needs to be normalized for {file}')
rv = 1
continue
full_ref = mozpath.join(work_dir, 'reference', ref)
m = files.match(full_ref)
if m is None:
raise ValueError("Bad reference path: " + ref)
m_c_path = m[1]
g_s_path = mozpath.join(work_dir, 'gecko-strings', ref)
resources = [
b'' if not os.path.exists(f)
else open(f, 'rb').read()
for f in (g_s_path, m_c_path)
]
ref_dir = os.path.dirname(full_ref)
if not os.path.exists(ref_dir):
os.makedirs(ref_dir)
open(full_ref, 'wb').write(merge_channels(ref, resources))
client = hglib.clone(
source=mozpath.join(get_state_dir(), 'gecko-strings'),
dest=mozpath.join(work_dir, 'en-US')
)
client.open()
old_tip = client.tip().node
run_migration = [
cmd._virtualenv_manager.python_path,
'-m', 'fluent.migrate.tool',
'--lang', 'en-US',
'--reference-dir', mozpath.join(work_dir, 'reference'),
'--localization-dir', mozpath.join(work_dir, 'en-US'),
'--dry-run',
migration_module
]
cmd.run_process(
run_migration,
cwd=work_dir,
line_handler=print,
)
# drop --dry-run
run_migration.pop(-2)
cmd.run_process(
run_migration,
cwd=work_dir,
line_handler=print,
)
tip = client.tip().node
if old_tip == tip:
cmd.log(logging.WARN, 'fluent-migration-test', {
'file': to_test,
}, 'No migration applied for {file}')
return rv
for ref in references:
diff_resources(
mozpath.join(work_dir, 'reference', ref),
mozpath.join(work_dir, 'en-US', ref),
)
messages = [l.desc.decode('utf-8') for l in client.log(b'::%s - ::%s' % (tip, old_tip))]
bug = re.search('[0-9]{5,}', migration_name).group()
# Just check first message for bug number, they're all following the same pattern
if bug not in messages[0]:
rv = 1
cmd.log(logging.ERROR, 'fluent-migration-test', {
'file': to_test,
}, 'Missing or wrong bug number for {file}')
if any(
'part {}'.format(n + 1) not in msg
for n, msg in enumerate(messages)
):
rv = 1
cmd.log(logging.ERROR, 'fluent-migration-test', {
'file': to_test,
}, 'Commit messages should have "part {{index}}" for {file}')
return rv
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