gst-uninstalled.py

   1 #!/usr/bin/env python3
   2
   3 import argparse
   4 import contextlib
   5 import json
   6 import os
   7 import platform
   8 import re
   9 import site
  10 import shutil
  11 import subprocess
  12 import sys
  13 import tempfile
  14 import pathlib
  15
  16 from distutils.sysconfig import get_python_lib
  17
  18 from common import get_meson
  19 from common import git
  20
  21 SCRIPTDIR = os.path.dirname(os.path.realpath(__file__))
  22 PREFIX_DIR = os.path.join(SCRIPTDIR, 'prefix')
  23 # Use '_build' as the builddir instead of 'build'
  24 DEFAULT_BUILDDIR = os.path.join(SCRIPTDIR, 'build')
  25 if not os.path.exists(DEFAULT_BUILDDIR):
  26     DEFAULT_BUILDDIR = os.path.join(SCRIPTDIR, '_build')
  27
  28
  29 def prepend_env_var(env, var, value):
  30     env[var] = os.pathsep + value + os.pathsep + env.get(var, "")
  31     env[var] = env[var].replace(os.pathsep + os.pathsep, os.pathsep).strip(os.pathsep)
  32
  33
  34 def get_subprocess_env(options, gst_version):
  35     env = os.environ.copy()
  36
  37     env["CURRENT_GST"] = os.path.normpath(SCRIPTDIR)
  38     env["GST_VALIDATE_SCENARIOS_PATH"] = os.path.normpath(
  39         "%s/subprojects/gst-devtools/validate/data/scenarios" % SCRIPTDIR)
  40     env["GST_VALIDATE_PLUGIN_PATH"] = os.path.normpath(
  41         "%s/subprojects/gst-devtools/validate/plugins" % options.builddir)
  42     env["GST_VALIDATE_APPS_DIR"] = os.path.normpath(
  43         "%s/subprojects/gst-editing-services/tests/validate" % SCRIPTDIR)
  44     prepend_env_var(env, "PATH", os.path.normpath(
  45         "%s/subprojects/gst-devtools/validate/tools" % options.builddir))
  46     prepend_env_var(env, "PATH", os.path.join(SCRIPTDIR, 'meson'))
  47     env["GST_VERSION"] = gst_version
  48     env["GST_ENV"] = 'gst-' + gst_version
  49     env["GST_PLUGIN_SYSTEM_PATH"] = ""
  50     env["GST_PLUGIN_SCANNER"] = os.path.normpath(
  51         "%s/subprojects/gstreamer/libs/gst/helpers/gst-plugin-scanner" % options.builddir)
  52     env["GST_PTP_HELPER"] = os.path.normpath(
  53         "%s/subprojects/gstreamer/libs/gst/helpers/gst-ptp-helper" % options.builddir)
  54     env["GST_REGISTRY"] = os.path.normpath(options.builddir + "/registry.dat")
  55
  56     sharedlib_reg = re.compile(r'\.so|\.dylib|\.dll')
  57     typelib_reg = re.compile(r'.*\.typelib$')
  58     pluginpath_reg = re.compile(r'lib.*' + re.escape(os.path.normpath('/gstreamer-1.0/')))
  59
  60     if os.name is 'nt':
  61         lib_path_envvar = 'PATH'
  62     elif platform.system() == 'Darwin':
  63         lib_path_envvar = 'DYLD_LIBRARY_PATH'
  64     else:
  65         lib_path_envvar = 'LD_LIBRARY_PATH'
  66
  67     prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(SCRIPTDIR, 'subprojects',
  68                                                         'gst-python', 'plugin'))
  69     prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(PREFIX_DIR, 'lib',
  70                                                         'gstreamer-1.0'))
  71     prepend_env_var(env, "PATH", os.path.join(PREFIX_DIR, 'bin'))
  72     prepend_env_var(env, lib_path_envvar, os.path.join(PREFIX_DIR, 'lib'))
  73     prepend_env_var(env, "GST_VALIDATE_SCENARIOS_PATH", os.path.join(
  74         PREFIX_DIR, 'share', 'gstreamer-1.0', 'validate', 'scenarios'))
  75     prepend_env_var(env, "GI_TYPELIB_PATH", os.path.join(PREFIX_DIR, 'lib',
  76                                                          'lib', 'girepository-1.0'))
  77     prepend_env_var(env, "PKG_CONFIG_PATH", os.path.join(PREFIX_DIR, 'lib', 'pkgconfig'))
  78
  79     meson = get_meson()
  80     targets_s = subprocess.check_output(meson + ['introspect', options.builddir, '--targets'])
  81     targets = json.loads(targets_s.decode())
  82     paths = set()
  83     mono_paths = set()
  84     srcdir_path = pathlib.Path(options.srcdir)
  85     for target in targets:
  86         filename = target['filename']
  87         root = os.path.dirname(filename)
  88         if srcdir_path / "subprojects/gst-devtools/validate/plugins" in (srcdir_path / root).parents:
  89             continue
  90         if filename.endswith('.dll'):
  91             mono_paths.add(os.path.join(options.builddir, root))
  92         if typelib_reg.search(filename):
  93             prepend_env_var(env, "GI_TYPELIB_PATH",
  94                             os.path.join(options.builddir, root))
  95         elif sharedlib_reg.search(filename):
  96             if target.get('type') != "shared library":
  97                 continue
  98
  99             if target.get('installed') and pluginpath_reg.search(os.path.normpath(target.get('install_filename'))):
 100                 prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(options.builddir, root))
 101                 continue
 102
 103             prepend_env_var(env, lib_path_envvar,
 104                             os.path.join(options.builddir, root))
 105         elif target.get('type') == 'executable' and target.get('installed'):
 106             paths.add(os.path.join(options.builddir, root))
 107
 108     for p in paths:
 109         prepend_env_var(env, 'PATH', p)
 110
 111     if os.name != 'nt':
 112         for p in mono_paths:
 113             prepend_env_var(env, "MONO_PATH", p)
 114
 115     presets = set()
 116     encoding_targets = set()
 117     pkg_dirs = set()
 118     python_dirs = set(["%s/subprojects/gstreamer/libs/gst/helpers/" % options.srcdir])
 119     if '--installed' in subprocess.check_output(meson + ['introspect', '-h']).decode():
 120         installed_s = subprocess.check_output(meson + ['introspect', options.builddir, '--installed'])
 121         for path, installpath in json.loads(installed_s.decode()).items():
 122             installpath_parts = pathlib.Path(installpath).parts
 123             path_parts = pathlib.Path(path).parts
 124
 125             # We want to add all python modules to the PYTHONPATH
 126             # in a manner consistent with the way they would be imported:
 127             # For example if the source path /home/meh/foo/bar.py
 128             # is to be installed in /usr/lib/python/site-packages/foo/bar.py,
 129             # we want to add /home/meh to the PYTHONPATH.
 130             # This will only work for projects where the paths to be installed
 131             # mirror the installed directory layout, for example if the path
 132             # is /home/meh/baz/bar.py and the install path is
 133             # /usr/lib/site-packages/foo/bar.py , we will not add anything
 134             # to PYTHONPATH, but the current approach works with pygobject
 135             # and gst-python at least.
 136             if 'site-packages' in installpath_parts:
 137                 install_subpath = os.path.join(*installpath_parts[installpath_parts.index('site-packages') + 1:])
 138                 if path.endswith(install_subpath):
 139                     python_dirs.add(path[:len (install_subpath) * -1])
 140
 141             if path.endswith('.prs'):
 142                 presets.add(os.path.dirname(path))
 143             elif path.endswith('.gep'):
 144                 encoding_targets.add(
 145                     os.path.abspath(os.path.join(os.path.dirname(path), '..')))
 146             elif path.endswith('.pc'):
 147                 # Is there a -uninstalled pc file for this file?
 148                 uninstalled = "{0}-uninstalled.pc".format(path[:-3])
 149                 if os.path.exists(uninstalled):
 150                     pkg_dirs.add(os.path.dirname(path))
 151
 152         for p in presets:
 153             prepend_env_var(env, 'GST_PRESET_PATH', p)
 154
 155         for t in encoding_targets:
 156             prepend_env_var(env, 'GST_ENCODING_TARGET_PATH', t)
 157
 158         for pkg_dir in pkg_dirs:
 159             prepend_env_var(env, "PKG_CONFIG_PATH", pkg_dir)
 160     prepend_env_var(env, "PKG_CONFIG_PATH", os.path.join(options.builddir,
 161                                                          'subprojects',
 162                                                          'gst-plugins-good',
 163                                                          'pkgconfig'))
 164
 165     for python_dir in python_dirs:
 166         prepend_env_var(env, 'PYTHONPATH', python_dir)
 167
 168     mesonpath = os.path.join(SCRIPTDIR, "meson")
 169     if os.path.join(mesonpath):
 170         # Add meson/ into PYTHONPATH if we are using a local meson
 171         prepend_env_var(env, 'PYTHONPATH', mesonpath)
 172
 173     return env
 174
 175 # https://stackoverflow.com/questions/1871549/determine-if-python-is-running-inside-virtualenv
 176 def in_venv():
 177     return (hasattr(sys, 'real_prefix') or
 178             (hasattr(sys, 'base_prefix') and sys.base_prefix != sys.prefix))
 179
 180 if __name__ == "__main__":
 181     parser = argparse.ArgumentParser(prog="gstreamer-uninstalled")
 182
 183     parser.add_argument("--builddir",
 184                         default=DEFAULT_BUILDDIR,
 185                         help="The meson build directory")
 186     parser.add_argument("--srcdir",
 187                         default=SCRIPTDIR,
 188                         help="The top level source directory")
 189     options, args = parser.parse_known_args()
 190
 191     if not os.path.exists(options.builddir):
 192         print("GStreamer not built in %s\n\nBuild it and try again" %
 193               options.builddir)
 194         exit(1)
 195     options.builddir = os.path.abspath(options.builddir)
 196
 197     if not os.path.exists(options.srcdir):
 198         print("The specified source dir does not exist" %
 199               options.srcdir)
 200         exit(1)
 201
 202     # The following incantation will retrieve the current branch name.
 203     gst_version = git("rev-parse", "--symbolic-full-name", "--abbrev-ref", "HEAD",
 204                       repository_path=options.srcdir).strip('\n')
 205
 206     if not args:
 207         if os.name is 'nt':
 208             args = [os.environ.get("COMSPEC", r"C:\WINDOWS\system32\cmd.exe")]
 209             args += ['/k', 'prompt [gst-{}] $P$G'.format(gst_version)]
 210         else:
 211             args = [os.environ.get("SHELL", os.path.realpath("/bin/sh"))]
 212         if "bash" in args[0]:
 213             bashrc = os.path.expanduser('~/.bashrc')
 214             if os.path.exists(bashrc):
 215                 tmprc = tempfile.NamedTemporaryFile(mode='w')
 216                 with open(bashrc, 'r') as src:
 217                     shutil.copyfileobj(src, tmprc)
 218                 tmprc.write('\nexport PS1="[gst-%s] $PS1"' % gst_version)
 219                 tmprc.flush()
 220                 # Let the GC remove the tmp file
 221                 args.append("--rcfile")
 222                 args.append(tmprc.name)
 223     try:
 224         exit(subprocess.call(args, close_fds=False,
 225                              env=get_subprocess_env(options, gst_version)))
 226     except subprocess.CalledProcessError as e:
 227         exit(e.returncode)