gstreamer/gst-uninstalled.py
Alicia Boya García 0b6c960ca7 gst-uninstalled: Don't change current working directory
Currently gst-uninstalled.py changes the current directory to the root
of the gst-build before executing execute the command passed as
arguments. This is unnecessary, it creates confusion and makes scripting
more cumbersome. This patch fixes that.
2018-11-23 18:22:43 +00:00

227 lines
9.7 KiB
Python
Executable file

#!/usr/bin/env python3
import argparse
import contextlib
import json
import os
import platform
import re
import site
import shutil
import subprocess
import sys
import tempfile
import pathlib
from distutils.sysconfig import get_python_lib
from common import get_meson
from common import git
SCRIPTDIR = os.path.dirname(os.path.realpath(__file__))
PREFIX_DIR = os.path.join(SCRIPTDIR, 'prefix')
# Use '_build' as the builddir instead of 'build'
DEFAULT_BUILDDIR = os.path.join(SCRIPTDIR, 'build')
if not os.path.exists(DEFAULT_BUILDDIR):
DEFAULT_BUILDDIR = os.path.join(SCRIPTDIR, '_build')
def prepend_env_var(env, var, value):
env[var] = os.pathsep + value + os.pathsep + env.get(var, "")
env[var] = env[var].replace(os.pathsep + os.pathsep, os.pathsep).strip(os.pathsep)
def get_subprocess_env(options, gst_version):
env = os.environ.copy()
env["CURRENT_GST"] = os.path.normpath(SCRIPTDIR)
env["GST_VALIDATE_SCENARIOS_PATH"] = os.path.normpath(
"%s/subprojects/gst-devtools/validate/data/scenarios" % SCRIPTDIR)
env["GST_VALIDATE_PLUGIN_PATH"] = os.path.normpath(
"%s/subprojects/gst-devtools/validate/plugins" % options.builddir)
env["GST_VALIDATE_APPS_DIR"] = os.path.normpath(
"%s/subprojects/gst-editing-services/tests/validate" % SCRIPTDIR)
prepend_env_var(env, "PATH", os.path.normpath(
"%s/subprojects/gst-devtools/validate/tools" % options.builddir))
prepend_env_var(env, "PATH", os.path.join(SCRIPTDIR, 'meson'))
env["GST_VERSION"] = gst_version
env["GST_ENV"] = 'gst-' + gst_version
env["GST_PLUGIN_SYSTEM_PATH"] = ""
env["GST_PLUGIN_SCANNER"] = os.path.normpath(
"%s/subprojects/gstreamer/libs/gst/helpers/gst-plugin-scanner" % options.builddir)
env["GST_PTP_HELPER"] = os.path.normpath(
"%s/subprojects/gstreamer/libs/gst/helpers/gst-ptp-helper" % options.builddir)
env["GST_REGISTRY"] = os.path.normpath(options.builddir + "/registry.dat")
sharedlib_reg = re.compile(r'\.so|\.dylib|\.dll')
typelib_reg = re.compile(r'.*\.typelib$')
pluginpath_reg = re.compile(r'lib.*' + re.escape(os.path.normpath('/gstreamer-1.0/')))
if os.name is 'nt':
lib_path_envvar = 'PATH'
elif platform.system() == 'Darwin':
lib_path_envvar = 'DYLD_LIBRARY_PATH'
else:
lib_path_envvar = 'LD_LIBRARY_PATH'
prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(SCRIPTDIR, 'subprojects',
'gst-python', 'plugin'))
prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(PREFIX_DIR, 'lib',
'gstreamer-1.0'))
prepend_env_var(env, "PATH", os.path.join(PREFIX_DIR, 'bin'))
prepend_env_var(env, lib_path_envvar, os.path.join(PREFIX_DIR, 'lib'))
prepend_env_var(env, "GST_VALIDATE_SCENARIOS_PATH", os.path.join(
PREFIX_DIR, 'share', 'gstreamer-1.0', 'validate', 'scenarios'))
prepend_env_var(env, "GI_TYPELIB_PATH", os.path.join(PREFIX_DIR, 'lib',
'lib', 'girepository-1.0'))
prepend_env_var(env, "PKG_CONFIG_PATH", os.path.join(PREFIX_DIR, 'lib', 'pkgconfig'))
meson = get_meson()
targets_s = subprocess.check_output(meson + ['introspect', options.builddir, '--targets'])
targets = json.loads(targets_s.decode())
paths = set()
mono_paths = set()
srcdir_path = pathlib.Path(options.srcdir)
for target in targets:
filename = target['filename']
root = os.path.dirname(filename)
if srcdir_path / "subprojects/gst-devtools/validate/plugins" in (srcdir_path / root).parents:
continue
if filename.endswith('.dll'):
mono_paths.add(os.path.join(options.builddir, root))
if typelib_reg.search(filename):
prepend_env_var(env, "GI_TYPELIB_PATH",
os.path.join(options.builddir, root))
elif sharedlib_reg.search(filename):
if target.get('type') != "shared library":
continue
if target.get('installed') and pluginpath_reg.search(os.path.normpath(target.get('install_filename'))):
prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(options.builddir, root))
continue
prepend_env_var(env, lib_path_envvar,
os.path.join(options.builddir, root))
elif target.get('type') == 'executable' and target.get('installed'):
paths.add(os.path.join(options.builddir, root))
for p in paths:
prepend_env_var(env, 'PATH', p)
if os.name != 'nt':
for p in mono_paths:
prepend_env_var(env, "MONO_PATH", p)
presets = set()
encoding_targets = set()
pkg_dirs = set()
python_dirs = set(["%s/subprojects/gstreamer/libs/gst/helpers/" % options.srcdir])
if '--installed' in subprocess.check_output(meson + ['introspect', '-h']).decode():
installed_s = subprocess.check_output(meson + ['introspect', options.builddir, '--installed'])
for path, installpath in json.loads(installed_s.decode()).items():
installpath_parts = pathlib.Path(installpath).parts
path_parts = pathlib.Path(path).parts
# We want to add all python modules to the PYTHONPATH
# in a manner consistent with the way they would be imported:
# For example if the source path /home/meh/foo/bar.py
# is to be installed in /usr/lib/python/site-packages/foo/bar.py,
# we want to add /home/meh to the PYTHONPATH.
# This will only work for projects where the paths to be installed
# mirror the installed directory layout, for example if the path
# is /home/meh/baz/bar.py and the install path is
# /usr/lib/site-packages/foo/bar.py , we will not add anything
# to PYTHONPATH, but the current approach works with pygobject
# and gst-python at least.
if 'site-packages' in installpath_parts:
install_subpath = os.path.join(*installpath_parts[installpath_parts.index('site-packages') + 1:])
if path.endswith(install_subpath):
python_dirs.add(path[:len (install_subpath) * -1])
if path.endswith('.prs'):
presets.add(os.path.dirname(path))
elif path.endswith('.gep'):
encoding_targets.add(
os.path.abspath(os.path.join(os.path.dirname(path), '..')))
elif path.endswith('.pc'):
# Is there a -uninstalled pc file for this file?
uninstalled = "{0}-uninstalled.pc".format(path[:-3])
if os.path.exists(uninstalled):
pkg_dirs.add(os.path.dirname(path))
for p in presets:
prepend_env_var(env, 'GST_PRESET_PATH', p)
for t in encoding_targets:
prepend_env_var(env, 'GST_ENCODING_TARGET_PATH', t)
for pkg_dir in pkg_dirs:
prepend_env_var(env, "PKG_CONFIG_PATH", pkg_dir)
prepend_env_var(env, "PKG_CONFIG_PATH", os.path.join(options.builddir,
'subprojects',
'gst-plugins-good',
'pkgconfig'))
for python_dir in python_dirs:
prepend_env_var(env, 'PYTHONPATH', python_dir)
mesonpath = os.path.join(SCRIPTDIR, "meson")
if os.path.join(mesonpath):
# Add meson/ into PYTHONPATH if we are using a local meson
prepend_env_var(env, 'PYTHONPATH', mesonpath)
return env
# https://stackoverflow.com/questions/1871549/determine-if-python-is-running-inside-virtualenv
def in_venv():
return (hasattr(sys, 'real_prefix') or
(hasattr(sys, 'base_prefix') and sys.base_prefix != sys.prefix))
if __name__ == "__main__":
parser = argparse.ArgumentParser(prog="gstreamer-uninstalled")
parser.add_argument("--builddir",
default=DEFAULT_BUILDDIR,
help="The meson build directory")
parser.add_argument("--srcdir",
default=SCRIPTDIR,
help="The top level source directory")
options, args = parser.parse_known_args()
if not os.path.exists(options.builddir):
print("GStreamer not built in %s\n\nBuild it and try again" %
options.builddir)
exit(1)
options.builddir = os.path.abspath(options.builddir)
if not os.path.exists(options.srcdir):
print("The specified source dir does not exist" %
options.srcdir)
exit(1)
# The following incantation will retrieve the current branch name.
gst_version = git("rev-parse", "--symbolic-full-name", "--abbrev-ref", "HEAD",
repository_path=options.srcdir).strip('\n')
if not args:
if os.name is 'nt':
args = [os.environ.get("COMSPEC", r"C:\WINDOWS\system32\cmd.exe")]
args += ['/k', 'prompt [gst-{}] $P$G'.format(gst_version)]
else:
args = [os.environ.get("SHELL", os.path.realpath("/bin/sh"))]
if "bash" in args[0]:
bashrc = os.path.expanduser('~/.bashrc')
if os.path.exists(bashrc):
tmprc = tempfile.NamedTemporaryFile(mode='w')
with open(bashrc, 'r') as src:
shutil.copyfileobj(src, tmprc)
tmprc.write('\nexport PS1="[gst-%s] $PS1"' % gst_version)
tmprc.flush()
# Let the GC remove the tmp file
args.append("--rcfile")
args.append(tmprc.name)
try:
exit(subprocess.call(args, close_fds=False,
env=get_subprocess_env(options, gst_version)))
except subprocess.CalledProcessError as e:
exit(e.returncode)