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 from distutils.util import strtobool
  18
  19 from common import get_meson
  20 from common import git
  21
  22 SCRIPTDIR = os.path.dirname(os.path.realpath(__file__))
  23 PREFIX_DIR = os.path.join(SCRIPTDIR, 'prefix')
  24 # Use '_build' as the builddir instead of 'build'
  25 DEFAULT_BUILDDIR = os.path.join(SCRIPTDIR, 'build')
  26 if not os.path.exists(DEFAULT_BUILDDIR):
  27     DEFAULT_BUILDDIR = os.path.join(SCRIPTDIR, '_build')
  28
  29
  30 def listify(o):
  31     if isinstance(o, str):
  32         return [o]
  33     if isinstance(o, list):
  34         return o
  35     raise AssertionError('Object {!r} must be a string or a list'.format(o))
  36
  37 def stringify(o):
  38     if isinstance(o, str):
  39         return o
  40     if isinstance(o, list):
  41         if len(o) == 1:
  42             return o[0]
  43         raise AssertionError('Did not expect object {!r} to have more than one element'.format(o))
  44     raise AssertionError('Object {!r} must be a string or a list'.format(o))
  45
  46 def prepend_env_var(env, var, value):
  47     env[var] = os.pathsep + value + os.pathsep + env.get(var, "")
  48     env[var] = env[var].replace(os.pathsep + os.pathsep, os.pathsep).strip(os.pathsep)
  49
  50
  51 def get_subprocess_env(options, gst_version):
  52     env = os.environ.copy()
  53
  54     env["CURRENT_GST"] = os.path.normpath(SCRIPTDIR)
  55     env["GST_VALIDATE_SCENARIOS_PATH"] = os.path.normpath(
  56         "%s/subprojects/gst-devtools/validate/data/scenarios" % SCRIPTDIR)
  57     env["GST_VALIDATE_PLUGIN_PATH"] = os.path.normpath(
  58         "%s/subprojects/gst-devtools/validate/plugins" % options.builddir)
  59     env["GST_VALIDATE_APPS_DIR"] = os.path.normpath(
  60         "%s/subprojects/gst-editing-services/tests/validate" % SCRIPTDIR)
  61     prepend_env_var(env, "PATH", os.path.normpath(
  62         "%s/subprojects/gst-devtools/validate/tools" % options.builddir))
  63     prepend_env_var(env, "PATH", os.path.join(SCRIPTDIR, 'meson'))
  64     env["GST_VERSION"] = gst_version
  65     env["GST_ENV"] = 'gst-' + gst_version
  66     env["GST_PLUGIN_SYSTEM_PATH"] = ""
  67     env["GST_PLUGIN_SCANNER"] = os.path.normpath(
  68         "%s/subprojects/gstreamer/libs/gst/helpers/gst-plugin-scanner" % options.builddir)
  69     env["GST_PTP_HELPER"] = os.path.normpath(
  70         "%s/subprojects/gstreamer/libs/gst/helpers/gst-ptp-helper" % options.builddir)
  71     env["GST_REGISTRY"] = os.path.normpath(options.builddir + "/registry.dat")
  72
  73     sharedlib_reg = re.compile(r'\.so|\.dylib|\.dll')
  74     typelib_reg = re.compile(r'.*\.typelib$')
  75     pluginpath_reg = re.compile(r'lib.*' + re.escape(os.path.normpath('/gstreamer-1.0/')))
  76
  77     if os.name is 'nt':
  78         lib_path_envvar = 'PATH'
  79     elif platform.system() == 'Darwin':
  80         lib_path_envvar = 'DYLD_LIBRARY_PATH'
  81     else:
  82         lib_path_envvar = 'LD_LIBRARY_PATH'
  83
  84     prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(SCRIPTDIR, 'subprojects',
  85                                                         'gst-python', 'plugin'))
  86     prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(PREFIX_DIR, 'lib',
  87                                                         'gstreamer-1.0'))
  88     prepend_env_var(env, "GST_VALIDATE_SCENARIOS_PATH", os.path.join(
  89         PREFIX_DIR, 'share', 'gstreamer-1.0', 'validate', 'scenarios'))
  90     prepend_env_var(env, "GI_TYPELIB_PATH", os.path.join(PREFIX_DIR, 'lib',
  91                                                          'lib', 'girepository-1.0'))
  92     prepend_env_var(env, "PKG_CONFIG_PATH", os.path.join(PREFIX_DIR, 'lib', 'pkgconfig'))
  93
  94     # Library and binary search paths
  95     prepend_env_var(env, "PATH", os.path.join(PREFIX_DIR, 'bin'))
  96     if lib_path_envvar != 'PATH':
  97         prepend_env_var(env, lib_path_envvar, os.path.join(PREFIX_DIR, 'lib'))
  98     elif 'QMAKE' in os.environ:
  99         # There's no RPATH on Windows, so we need to set PATH for the qt5 DLLs
 100         prepend_env_var(env, 'PATH', os.path.dirname(os.environ['QMAKE']))
 101
 102     meson = get_meson()
 103     targets_s = subprocess.check_output(meson + ['introspect', options.builddir, '--targets'])
 104     targets = json.loads(targets_s.decode())
 105     paths = set()
 106     mono_paths = set()
 107     srcdir_path = pathlib.Path(options.srcdir)
 108     for target in targets:
 109         filenames = listify(target['filename'])
 110         for filename in filenames:
 111             root = os.path.dirname(filename)
 112             if srcdir_path / "subprojects/gst-devtools/validate/plugins" in (srcdir_path / root).parents:
 113                 continue
 114             if filename.endswith('.dll'):
 115                 mono_paths.add(os.path.join(options.builddir, root))
 116             if typelib_reg.search(filename):
 117                 prepend_env_var(env, "GI_TYPELIB_PATH",
 118                                 os.path.join(options.builddir, root))
 119             elif sharedlib_reg.search(filename):
 120                 if not target['type'].startswith('shared'):
 121                     continue
 122                 if target['installed']:
 123                     if pluginpath_reg.search(os.path.normpath(stringify(target['install_filename']))):
 124                         prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(options.builddir, root))
 125                         continue
 126
 127                 prepend_env_var(env, lib_path_envvar,
 128                                 os.path.join(options.builddir, root))
 129             elif target['type'] == 'executable' and target['installed']:
 130                 paths.add(os.path.join(options.builddir, root))
 131
 132     for p in paths:
 133         prepend_env_var(env, 'PATH', p)
 134
 135     if os.name != 'nt':
 136         for p in mono_paths:
 137             prepend_env_var(env, "MONO_PATH", p)
 138
 139     presets = set()
 140     encoding_targets = set()
 141     pkg_dirs = set()
 142     python_dirs = set(["%s/subprojects/gstreamer/libs/gst/helpers/" % options.srcdir])
 143     if '--installed' in subprocess.check_output(meson + ['introspect', '-h']).decode():
 144         installed_s = subprocess.check_output(meson + ['introspect', options.builddir, '--installed'])
 145         for path, installpath in json.loads(installed_s.decode()).items():
 146             installpath_parts = pathlib.Path(installpath).parts
 147             path_parts = pathlib.Path(path).parts
 148
 149             # We want to add all python modules to the PYTHONPATH
 150             # in a manner consistent with the way they would be imported:
 151             # For example if the source path /home/meh/foo/bar.py
 152             # is to be installed in /usr/lib/python/site-packages/foo/bar.py,
 153             # we want to add /home/meh to the PYTHONPATH.
 154             # This will only work for projects where the paths to be installed
 155             # mirror the installed directory layout, for example if the path
 156             # is /home/meh/baz/bar.py and the install path is
 157             # /usr/lib/site-packages/foo/bar.py , we will not add anything
 158             # to PYTHONPATH, but the current approach works with pygobject
 159             # and gst-python at least.
 160             if 'site-packages' in installpath_parts:
 161                 install_subpath = os.path.join(*installpath_parts[installpath_parts.index('site-packages') + 1:])
 162                 if path.endswith(install_subpath):
 163                     python_dirs.add(path[:len (install_subpath) * -1])
 164
 165             if path.endswith('.prs'):
 166                 presets.add(os.path.dirname(path))
 167             elif path.endswith('.gep'):
 168                 encoding_targets.add(
 169                     os.path.abspath(os.path.join(os.path.dirname(path), '..')))
 170             elif path.endswith('.pc'):
 171                 # Is there a -uninstalled pc file for this file?
 172                 uninstalled = "{0}-uninstalled.pc".format(path[:-3])
 173                 if os.path.exists(uninstalled):
 174                     pkg_dirs.add(os.path.dirname(path))
 175
 176             if path.endswith('gstomx.conf'):
 177                 prepend_env_var(env, 'GST_OMX_CONFIG_DIR', os.path.dirname(path))
 178
 179         for p in presets:
 180             prepend_env_var(env, 'GST_PRESET_PATH', p)
 181
 182         for t in encoding_targets:
 183             prepend_env_var(env, 'GST_ENCODING_TARGET_PATH', t)
 184
 185         for pkg_dir in pkg_dirs:
 186             prepend_env_var(env, "PKG_CONFIG_PATH", pkg_dir)
 187     prepend_env_var(env, "PKG_CONFIG_PATH", os.path.join(options.builddir,
 188                                                          'subprojects',
 189                                                          'gst-plugins-good',
 190                                                          'pkgconfig'))
 191
 192     for python_dir in python_dirs:
 193         prepend_env_var(env, 'PYTHONPATH', python_dir)
 194
 195     mesonpath = os.path.join(SCRIPTDIR, "meson")
 196     if os.path.join(mesonpath):
 197         # Add meson/ into PYTHONPATH if we are using a local meson
 198         prepend_env_var(env, 'PYTHONPATH', mesonpath)
 199
 200     return env
 201
 202 def get_windows_shell():
 203     command = ['powershell.exe' ,'-noprofile', '-executionpolicy', 'bypass', '-file', 'cmd_or_ps.ps1']
 204     result = subprocess.check_output(command)
 205     return result.decode().strip()
 206
 207 # https://stackoverflow.com/questions/1871549/determine-if-python-is-running-inside-virtualenv
 208 def in_venv():
 209     return (hasattr(sys, 'real_prefix') or
 210             (hasattr(sys, 'base_prefix') and sys.base_prefix != sys.prefix))
 211
 212 if __name__ == "__main__":
 213     parser = argparse.ArgumentParser(prog="gstreamer-uninstalled")
 214
 215     parser.add_argument("--builddir",
 216                         default=DEFAULT_BUILDDIR,
 217                         help="The meson build directory")
 218     parser.add_argument("--srcdir",
 219                         default=SCRIPTDIR,
 220                         help="The top level source directory")
 221     options, args = parser.parse_known_args()
 222
 223     if not os.path.exists(options.builddir):
 224         print("GStreamer not built in %s\n\nBuild it and try again" %
 225               options.builddir)
 226         exit(1)
 227     options.builddir = os.path.abspath(options.builddir)
 228
 229     if not os.path.exists(options.srcdir):
 230         print("The specified source dir does not exist" %
 231               options.srcdir)
 232         exit(1)
 233
 234     # The following incantation will retrieve the current branch name.
 235     gst_version = git("rev-parse", "--symbolic-full-name", "--abbrev-ref", "HEAD",
 236                       repository_path=options.srcdir).strip('\n')
 237
 238     if not args:
 239         if os.name is 'nt':
 240             shell = get_windows_shell()
 241             if shell == 'powershell.exe':
 242                 args = ['powershell.exe']
 243                 args += ['-NoLogo', '-NoExit']
 244                 prompt = 'function global:prompt {  "[gst-' + gst_version + '"+"] PS " + $PWD + "> "}'
 245                 args += ['-Command', prompt]
 246             else:
 247                 args = [os.environ.get("COMSPEC", r"C:\WINDOWS\system32\cmd.exe")]
 248                 args += ['/k', 'prompt [gst-{}] $P$G'.format(gst_version)]
 249         else:
 250             args = [os.environ.get("SHELL", os.path.realpath("/bin/sh"))]
 251         if "bash" in args[0] and not strtobool(os.environ.get("GST_BUILD_DISABLE_PS1_OVERRIDE", r"FALSE")):
 252             bashrc = os.path.expanduser('~/.bashrc')
 253             if os.path.exists(bashrc):
 254                 tmprc = tempfile.NamedTemporaryFile(mode='w')
 255                 with open(bashrc, 'r') as src:
 256                     shutil.copyfileobj(src, tmprc)
 257                 tmprc.write('\nexport PS1="[gst-%s] $PS1"' % gst_version)
 258                 tmprc.flush()
 259                 # Let the GC remove the tmp file
 260                 args.append("--rcfile")
 261                 args.append(tmprc.name)
 262     try:
 263         exit(subprocess.call(args, close_fds=False,
 264                              env=get_subprocess_env(options, gst_version)))
 265     except subprocess.CalledProcessError as e:
 266         exit(e.returncode)