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# Copyright 2012-2015 The Meson development team
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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# http://www.apache.org/licenses/LICENSE-2.0
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""A library of random helper functionality."""
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import platform, subprocess, operator, os, shutil, re, sys
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from glob import glob
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from coredata import MesonException
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class File:
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def __init__(self, is_built, subdir, fname):
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self.is_built = is_built
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self.subdir = subdir
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self.fname = fname
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@staticmethod
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def from_source_file(source_root, subdir, fname):
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if not os.path.isfile(os.path.join(source_root, subdir, fname)):
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raise MesonException('File %s does not exist.' % fname)
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return File(False, subdir, fname)
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@staticmethod
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def from_built_file(subdir, fname):
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return File(True, subdir, fname)
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@staticmethod
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def from_absolute_file(fname):
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return File(False, '', fname)
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def rel_to_builddir(self, build_to_src):
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if self.is_built:
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return os.path.join(self.subdir, self.fname)
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else:
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return os.path.join(build_to_src, self.subdir, self.fname)
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def endswith(self, ending):
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return self.fname.endswith(ending)
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def split(self, s):
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return self.fname.split(s)
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def __eq__(self, other):
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return (self.fname, self.subdir, self.is_built) == (other.fname, other.subdir, other.is_built)
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def __hash__(self):
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return hash((self.fname, self.subdir, self.is_built))
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def flatten(item):
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if not isinstance(item, list):
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return item
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result = []
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for i in item:
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if isinstance(i, list):
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result += flatten(i)
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else:
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result.append(i)
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return result
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def is_osx():
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return platform.system().lower() == 'darwin'
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def is_linux():
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return platform.system().lower() == 'linux'
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def is_windows():
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platname = platform.system().lower()
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return platname == 'windows' or 'mingw' in platname
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def is_32bit():
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return not(sys.maxsize > 2**32)
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def is_debianlike():
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try:
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open('/etc/debian_version', 'r')
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return True
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except FileNotFoundError:
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return False
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def exe_exists(arglist):
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try:
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p = subprocess.Popen(arglist, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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p.communicate()
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if p.returncode == 0:
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return True
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except FileNotFoundError:
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pass
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return False
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def detect_vcs(source_dir):
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vcs_systems = [
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dict(name = 'git', cmd = 'git', repo_dir = '.git', get_rev = 'git describe --dirty=+', rev_regex = '(.*)', dep = '.git/logs/HEAD'),
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dict(name = 'mercurial', cmd = 'hg', repo_dir = '.hg', get_rev = 'hg id -n', rev_regex = '(.*)', dep = '.hg/dirstate'),
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dict(name = 'subversion', cmd = 'svn', repo_dir = '.svn', get_rev = 'svn info', rev_regex = 'Revision: (.*)', dep = '.svn/wc.db'),
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dict(name = 'bazaar', cmd = 'bzr', repo_dir = '.bzr', get_rev = 'bzr revno', rev_regex = '(.*)', dep = '.bzr'),
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]
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segs = source_dir.replace('\\', '/').split('/')
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for i in range(len(segs), -1, -1):
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curdir = '/'.join(segs[:i])
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for vcs in vcs_systems:
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if os.path.isdir(os.path.join(curdir, vcs['repo_dir'])) and shutil.which(vcs['cmd']):
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vcs['wc_dir'] = curdir
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return vcs
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return None
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numpart = re.compile('[0-9.]+')
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def version_compare(vstr1, vstr2):
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match = numpart.match(vstr1.strip())
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if match is None:
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raise MesonException('Unconparable version string %s.' % vstr1)
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vstr1 = match.group(0)
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if vstr2.startswith('>='):
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cmpop = operator.ge
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vstr2 = vstr2[2:]
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elif vstr2.startswith('<='):
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cmpop = operator.le
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vstr2 = vstr2[2:]
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elif vstr2.startswith('!='):
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cmpop = operator.ne
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vstr2 = vstr2[2:]
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elif vstr2.startswith('=='):
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cmpop = operator.eq
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vstr2 = vstr2[2:]
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elif vstr2.startswith('='):
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cmpop = operator.eq
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vstr2 = vstr2[1:]
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elif vstr2.startswith('>'):
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cmpop = operator.gt
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vstr2 = vstr2[1:]
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elif vstr2.startswith('<'):
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cmpop = operator.lt
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vstr2 = vstr2[1:]
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else:
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cmpop = operator.eq
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varr1 = [int(x) for x in vstr1.split('.')]
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varr2 = [int(x) for x in vstr2.split('.')]
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return cmpop(varr1, varr2)
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def default_libdir():
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try:
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archpath = subprocess.check_output(['dpkg-architecture', '-qDEB_HOST_MULTIARCH']).decode().strip()
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return 'lib/' + archpath
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except:
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pass
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if os.path.isdir('/usr/lib64'):
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return 'lib64'
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return 'lib'
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def get_library_dirs():
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if is_windows():
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return ['C:/mingw/lib'] # Fixme
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if is_osx():
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return ['/usr/lib'] # Fix me as well.
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# The following is probably Debian/Ubuntu specific.
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# /usr/local/lib is first because it contains stuff
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# installed by the sysadmin and is probably more up-to-date
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# than /usr/lib. If you feel that this search order is
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# problematic, please raise the issue on the mailing list.
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unixdirs = ['/usr/local/lib', '/usr/lib', '/lib']
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plat = subprocess.check_output(['uname', '-m']).decode().strip()
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# This is a terrible hack. I admit it and I'm really sorry.
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# I just don't know what the correct solution is.
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if plat == 'i686':
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plat = 'i386'
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if plat.startswith('arm'):
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plat = 'arm'
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unixdirs += glob('/usr/lib/' + plat + '*')
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if os.path.exists('/usr/lib64'):
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unixdirs.append('/usr/lib64')
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unixdirs += glob('/lib/' + plat + '*')
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if os.path.exists('/lib64'):
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unixdirs.append('/lib64')
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unixdirs += glob('/lib/' + plat + '*')
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return unixdirs
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def do_replacement(regex, line, confdata):
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match = re.search(regex, line)
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while match:
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varname = match.group(1)
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if varname in confdata.keys():
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var = confdata.get(varname)
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if isinstance(var, str):
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pass
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elif isinstance(var, int):
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var = str(var)
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else:
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raise RuntimeError('Tried to replace a variable with something other than a string or int.')
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else:
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var = ''
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line = line.replace('@' + varname + '@', var)
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match = re.search(regex, line)
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return line
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def do_mesondefine(line, confdata):
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arr = line.split()
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if len(arr) != 2:
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raise MesonException('#mesondefine does not contain exactly two tokens: %s', line.strip())
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varname = arr[1]
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try:
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v = confdata.get(varname)
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except KeyError:
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return '/* undef %s */\n' % varname
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if isinstance(v, bool):
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if v:
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return '#define %s\n' % varname
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else:
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return '#undef %s\n' % varname
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elif isinstance(v, int):
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return '#define %s %d\n' % (varname, v)
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elif isinstance(v, str):
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return '#define %s %s\n' % (varname, v)
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else:
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raise MesonException('#mesondefine argument "%s" is of unknown type.' % varname)
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def do_conf_file(src, dst, confdata):
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data = open(src).readlines()
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regex = re.compile('@(.*?)@')
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result = []
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for line in data:
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if line.startswith('#mesondefine'):
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line = do_mesondefine(line, confdata)
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else:
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line = do_replacement(regex, line, confdata)
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result.append(line)
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dst_tmp = dst + '~'
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open(dst_tmp, 'w').writelines(result)
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shutil.copymode(src, dst_tmp)
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replace_if_different(dst, dst_tmp)
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def replace_if_different(dst, dst_tmp):
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# If contents are identical, don't touch the file to prevent
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# unnecessary rebuilds.
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try:
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if open(dst, 'r').read() == open(dst_tmp, 'r').read():
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os.unlink(dst_tmp)
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return
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except FileNotFoundError:
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pass
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os.replace(dst_tmp, dst)
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def stringlistify(item):
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if isinstance(item, str):
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item = [item]
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if not isinstance(item, list):
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raise MesonException('Item is not an array')
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for i in item:
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if not isinstance(i, str):
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raise MesonException('List item not a string.')
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return item
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def expand_arguments(args):
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expended_args = []
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for arg in args:
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if not arg.startswith('@'):
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expended_args.append(arg)
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continue
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args_file = arg[1:]
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try:
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with open(args_file) as f:
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extended_args = f.read().split()
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expended_args += extended_args
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except Exception as e:
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print('Error expanding command line arguments, %s not found' % args_file)
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print(e)
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return None
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return expended_args
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