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# Copyright 2015 The Meson development team
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
from .. import mlog
from .. import build
from ..mesonlib import MesonException, Popen_safe, extract_as_list
from ..dependencies import Qt4Dependency
from . import ExtensionModule
import xml.etree.ElementTree as ET
from . import ModuleReturnValue
from . import permittedKwargs
class Qt4Module(ExtensionModule):
tools_detected = False
def _detect_tools(self, env, method):
if self.tools_detected:
return
mlog.log('Detecting Qt4 tools')
# FIXME: We currently require Qt4 to exist while importing the module.
# We should make it gracefully degrade and not create any targets if
# the import is marked as 'optional' (not implemented yet)
kwargs = {'required': 'true', 'modules': 'Core', 'silent': 'true', 'method': method}
qt4 = Qt4Dependency(env, kwargs)
# Get all tools and then make sure that they are the right version
self.moc, self.uic, self.rcc = qt4.compilers_detect()
# Moc, uic and rcc write their version strings to stderr.
# Moc and rcc return a non-zero result when doing so.
# What kind of an idiot thought that was a good idea?
if self.moc.found():
stdout, stderr = Popen_safe(self.moc.get_command() + ['-v'])[1:3]
stdout = stdout.strip()
stderr = stderr.strip()
if 'Qt Meta' in stderr:
moc_ver = stderr
else:
raise MesonException('Moc preprocessor is not for Qt 4. Output:\n%s\n%s' %
(stdout, stderr))
mlog.log(' moc:', mlog.green('YES'), '(%s, %s)' %
(self.moc.get_path(), moc_ver.split()[-1]))
else:
mlog.log(' moc:', mlog.red('NO'))
if self.uic.found():
stdout, stderr = Popen_safe(self.uic.get_command() + ['-v'])[1:3]
stdout = stdout.strip()
stderr = stderr.strip()
if 'version 4.' in stderr:
uic_ver = stderr
else:
raise MesonException('Uic compiler is not for Qt4. Output:\n%s\n%s' %
(stdout, stderr))
mlog.log(' uic:', mlog.green('YES'), '(%s, %s)' %
(self.uic.get_path(), uic_ver.split()[-1]))
else:
mlog.log(' uic:', mlog.red('NO'))
if self.rcc.found():
stdout, stderr = Popen_safe(self.rcc.get_command() + ['-v'])[1:3]
stdout = stdout.strip()
stderr = stderr.strip()
if 'version 4.' in stderr:
rcc_ver = stderr
else:
raise MesonException('Rcc compiler is not for Qt 4. Output:\n%s\n%s' %
(stdout, stderr))
mlog.log(' rcc:', mlog.green('YES'), '(%s, %s)'
% (self.rcc.get_path(), rcc_ver.split()[-1]))
else:
mlog.log(' rcc:', mlog.red('NO'))
self.tools_detected = True
def parse_qrc(self, state, fname):
abspath = os.path.join(state.environment.source_dir, state.subdir, fname)
relative_part = os.path.split(fname)[0]
try:
tree = ET.parse(abspath)
root = tree.getroot()
result = []
for child in root[0]:
if child.tag != 'file':
mlog.warning("malformed rcc file: ", os.path.join(state.subdir, fname))
break
else:
result.append(os.path.join(state.subdir, relative_part, child.text))
return result
except Exception:
return []
@permittedKwargs({'moc_headers', 'moc_sources', 'ui_files', 'qresources', 'method'})
def preprocess(self, state, args, kwargs):
rcc_files, ui_files, moc_headers, moc_sources, sources \
= extract_as_list(kwargs, 'qresources', 'ui_files', 'moc_headers', 'moc_sources', 'sources', pop = True)
sources += args[1:]
method = kwargs.get('method', 'auto')
self._detect_tools(state.environment, method)
err_msg = "{0} sources specified and couldn't find {1}, " \
"please check your qt4 installation"
if len(moc_headers) + len(moc_sources) > 0 and not self.moc.found():
raise MesonException(err_msg.format('MOC', 'moc-qt4'))
if len(rcc_files) > 0:
if not self.rcc.found():
raise MesonException(err_msg.format('RCC', 'rcc-qt4'))
qrc_deps = []
for i in rcc_files:
qrc_deps += self.parse_qrc(state, i)
if len(args) > 0:
name = args[0]
else:
basename = os.path.split(rcc_files[0])[1]
name = 'qt4-' + basename.replace('.', '_')
rcc_kwargs = {'input': rcc_files,
'output': name + '.cpp',
'command': [self.rcc, '-o', '@OUTPUT@', '@INPUT@'],
'depend_files': qrc_deps}
res_target = build.CustomTarget(name, state.subdir, rcc_kwargs)
sources.append(res_target)
if len(ui_files) > 0:
if not self.uic.found():
raise MesonException(err_msg.format('UIC', 'uic-qt4'))
ui_kwargs = {'output': 'ui_@BASENAME@.h',
'arguments': ['-o', '@OUTPUT@', '@INPUT@']}
ui_gen = build.Generator([self.uic], ui_kwargs)
ui_output = ui_gen.process_files('Qt4 ui', ui_files, state)
sources.append(ui_output)
if len(moc_headers) > 0:
moc_kwargs = {'output': 'moc_@BASENAME@.cpp',
'arguments': ['@INPUT@', '-o', '@OUTPUT@']}
moc_gen = build.Generator([self.moc], moc_kwargs)
moc_output = moc_gen.process_files('Qt4 moc header', moc_headers, state)
sources.append(moc_output)
if len(moc_sources) > 0:
moc_kwargs = {'output': '@BASENAME@.moc',
'arguments': ['@INPUT@', '-o', '@OUTPUT@']}
moc_gen = build.Generator([self.moc], moc_kwargs)
moc_output = moc_gen.process_files('Qt4 moc source', moc_sources, state)
sources.append(moc_output)
return ModuleReturnValue(sources, sources)
def initialize():
mlog.warning('rcc dependencies will not work properly until this upstream issue is fixed:',
mlog.bold('https://bugreports.qt.io/browse/QTBUG-45460'))
return Qt4Module()
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