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# Copyright 2012-2014 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.
"""A library of random helper functionality."""
import platform, subprocess, operator, os, shutil, re
from glob import glob
from coredata import MesonException
def is_osx():
return platform.system().lower() == 'darwin'
def is_linux():
return platform.system().lower() == 'linux'
def is_windows():
return platform.system().lower() == 'windows'
def is_debianlike():
try:
open('/etc/debian_version', 'r')
return True
except FileNotFoundError:
return False
def exe_exists(arglist):
try:
p = subprocess.Popen(arglist, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
p.communicate()
if p.returncode == 0:
return True
except FileNotFoundError:
pass
return False
def detect_vcs(source_dir):
vcs_systems = [
dict(name = 'git', cmd = 'git', repo_dir = '.git', get_rev = 'git describe --dirty=+', rev_regex = '(.*)', dep = '.git/logs/HEAD'),
dict(name = 'mercurial', cmd = 'hg', repo_dir = '.hg', get_rev = 'hg id -n', rev_regex = '(.*)', dep = '.hg/dirstate'),
dict(name = 'subversion', cmd = 'svn', repo_dir = '.svn', get_rev = 'svn info', rev_regex = 'Revision: (.*)', dep = '.svn/wc.db'),
dict(name = 'bazaar', cmd = 'bzr', repo_dir = '.bzr', get_rev = 'bzr revno', rev_regex = '(.*)', dep = '.bzr'),
]
segs = source_dir.replace('\\', '/').split('/')
for i in range(len(segs), -1, -1):
curdir = '/'.join(segs[:i])
for vcs in vcs_systems:
if os.path.isdir(os.path.join(curdir, vcs['repo_dir'])) and shutil.which(vcs['cmd']):
vcs['wc_dir'] = curdir
return vcs
return None
def version_compare(vstr1, vstr2):
if vstr2.startswith('>='):
cmpop = operator.ge
vstr2 = vstr2[2:]
elif vstr2.startswith('<='):
cmpop = operator.le
vstr2 = vstr2[2:]
elif vstr2.startswith('!='):
cmpop = operator.ne
vstr2 = vstr2[2:]
elif vstr2.startswith('=='):
cmpop = operator.eq
vstr2 = vstr2[2:]
elif vstr2.startswith('='):
cmpop = operator.eq
vstr2 = vstr2[1:]
elif vstr2.startswith('>'):
cmpop = operator.gt
vstr2 = vstr2[1:]
elif vstr2.startswith('<'):
cmpop = operator.lt
vstr2 = vstr2[1:]
else:
cmpop = operator.eq
varr1 = [int(x) for x in vstr1.split('.')]
varr2 = [int(x) for x in vstr2.split('.')]
return cmpop(varr1, varr2)
def default_libdir():
if os.path.isfile('/etc/debian_version'):
archpath = subprocess.check_output(['dpkg-architecture', '-qDEB_HOST_MULTIARCH']).decode().strip()
return 'lib/' + archpath
return 'lib'
def get_library_dirs():
if is_windows():
return ['C:/mingw/lib'] # Fixme
if is_osx():
return ['/usr/lib'] # Fix me as well.
# The following is probably Debian/Ubuntu specific.
# /usr/local/lib is first because it contains stuff
# installed by the sysadmin and is probably more up-to-date
# than /usr/lib. If you feel that this search order is
# problematic, please raise the issue on the mailing list.
unixdirs = ['/usr/local/lib', '/usr/lib', '/lib']
plat = subprocess.check_output(['uname', '-m']).decode().strip()
# This is a terrible hack. I admit it and I'm really sorry.
# I just don't know what the correct solution is.
if plat == 'i686':
plat = 'i386'
if plat.startswith('arm'):
plat = 'arm'
unixdirs += glob('/usr/lib/' + plat + '*')
if os.path.exists('/usr/lib64'):
unixdirs.append('/usr/lib64')
unixdirs += glob('/lib/' + plat + '*')
if os.path.exists('/lib64'):
unixdirs.append('/lib64')
unixdirs += glob('/lib/' + plat + '*')
return unixdirs
def do_replacement(regex, line, confdata):
match = re.search(regex, line)
while match:
varname = match.group(1)
if varname in confdata.keys():
var = confdata.get(varname)
if isinstance(var, str):
pass
elif isinstance(var, int):
var = str(var)
else:
raise RuntimeError('Tried to replace a variable with something other than a string or int.')
else:
var = ''
line = line.replace('@' + varname + '@', var)
match = re.search(regex, line)
return line
def do_mesondefine(line, confdata):
arr = line.split()
if len(arr) != 2:
raise MesonException('#mesondefine does not contain exactly two tokens: %s', line.strip())
varname = arr[1]
try:
v = confdata.get(varname)
except KeyError:
return '/* undef %s */\n' % varname
if isinstance(v, bool):
if v:
return '#define %s\n' % varname
else:
return '#undef %s\n' % varname
elif isinstance(v, int):
return '#define %s %d\n' % (varname, v)
elif isinstance(v, str):
return '#define %s %s\n' % (varname, v)
else:
raise MesonException('#mesondefine argument "%s" is of unknown type.' % varname)
def do_conf_file(src, dst, confdata):
data = open(src).readlines()
regex = re.compile('@(.*?)@')
result = []
for line in data:
if line.startswith('#mesondefine'):
line = do_mesondefine(line, confdata)
else:
line = do_replacement(regex, line, confdata)
result.append(line)
dst_tmp = dst + '~'
open(dst_tmp, 'w').writelines(result)
replace_if_different(dst, dst_tmp)
def replace_if_different(dst, dst_tmp):
# If contents are identical, don't touch the file to prevent
# unnecessary rebuilds.
try:
if open(dst, 'r').read() == open(dst_tmp, 'r').read():
os.unlink(dst_tmp)
return
except FileNotFoundError:
pass
os.replace(dst_tmp, dst)
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