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