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 from common import win32_get_short_path_name
  22
  23 SCRIPTDIR = os.path.dirname(os.path.realpath(__file__))
  24 PREFIX_DIR = os.path.join(SCRIPTDIR, 'prefix')
  25 # Use '_build' as the builddir instead of 'build'
  26 DEFAULT_BUILDDIR = os.path.join(SCRIPTDIR, 'build')
  27 if not os.path.exists(DEFAULT_BUILDDIR):
  28     DEFAULT_BUILDDIR = os.path.join(SCRIPTDIR, '_build')
  29
  30
  31 def listify(o):
  32     if isinstance(o, str):
  33         return [o]
  34     if isinstance(o, list):
  35         return o
  36     raise AssertionError('Object {!r} must be a string or a list'.format(o))
  37
  38 def stringify(o):
  39     if isinstance(o, str):
  40         return o
  41     if isinstance(o, list):
  42         if len(o) == 1:
  43             return o[0]
  44         raise AssertionError('Did not expect object {!r} to have more than one element'.format(o))
  45     raise AssertionError('Object {!r} must be a string or a list'.format(o))
  46
  47 def prepend_env_var(env, var, value):
  48     # Try not to exceed maximum length limits for env vars on Windows
  49     if os.name is 'nt':
  50         value = win32_get_short_path_name(value)
  51     env_val = env.get(var, '')
  52     val = os.pathsep + value + os.pathsep
  53     # Don't add the same value twice
  54     if val in env_val or env_val.startswith(value + os.pathsep):
  55         return
  56     env[var] = val + env_val
  57     env[var] = env[var].replace(os.pathsep + os.pathsep, os.pathsep).strip(os.pathsep)
  58
  59
  60 def get_subprocess_env(options, gst_version):
  61     env = os.environ.copy()
  62
  63     env["CURRENT_GST"] = os.path.normpath(SCRIPTDIR)
  64     env["GST_VALIDATE_SCENARIOS_PATH"] = os.path.normpath(
  65         "%s/subprojects/gst-devtools/validate/data/scenarios" % SCRIPTDIR)
  66     env["GST_VALIDATE_PLUGIN_PATH"] = os.path.normpath(
  67         "%s/subprojects/gst-devtools/validate/plugins" % options.builddir)
  68     env["GST_VALIDATE_APPS_DIR"] = os.path.normpath(
  69         "%s/subprojects/gst-editing-services/tests/validate" % SCRIPTDIR)
  70     prepend_env_var(env, "PATH", os.path.normpath(
  71         "%s/subprojects/gst-devtools/validate/tools" % options.builddir))
  72     prepend_env_var(env, "PATH", os.path.join(SCRIPTDIR, 'meson'))
  73     env["GST_VERSION"] = gst_version
  74     env["GST_ENV"] = 'gst-' + gst_version
  75     env["GST_PLUGIN_SYSTEM_PATH"] = ""
  76     env["GST_PLUGIN_SCANNER"] = os.path.normpath(
  77         "%s/subprojects/gstreamer/libs/gst/helpers/gst-plugin-scanner" % options.builddir)
  78     env["GST_PTP_HELPER"] = os.path.normpath(
  79         "%s/subprojects/gstreamer/libs/gst/helpers/gst-ptp-helper" % options.builddir)
  80     env["GST_REGISTRY"] = os.path.normpath(options.builddir + "/registry.dat")
  81
  82     sharedlib_reg = re.compile(r'\.so|\.dylib|\.dll')
  83     typelib_reg = re.compile(r'.*\.typelib$')
  84     pluginpath_reg = re.compile(r'lib.*' + re.escape(os.path.normpath('/gstreamer-1.0/')))
  85
  86     if os.name is 'nt':
  87         lib_path_envvar = 'PATH'
  88     elif platform.system() == 'Darwin':
  89         lib_path_envvar = 'DYLD_LIBRARY_PATH'
  90     else:
  91         lib_path_envvar = 'LD_LIBRARY_PATH'
  92
  93     prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(SCRIPTDIR, 'subprojects',
  94                                                         'gst-python', 'plugin'))
  95     prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(PREFIX_DIR, 'lib',
  96                                                         'gstreamer-1.0'))
  97     prepend_env_var(env, "GST_VALIDATE_SCENARIOS_PATH", os.path.join(
  98         PREFIX_DIR, 'share', 'gstreamer-1.0', 'validate', 'scenarios'))
  99     prepend_env_var(env, "GI_TYPELIB_PATH", os.path.join(PREFIX_DIR, 'lib',
 100                                                          'lib', 'girepository-1.0'))
 101     prepend_env_var(env, "PKG_CONFIG_PATH", os.path.join(PREFIX_DIR, 'lib', 'pkgconfig'))
 102
 103     # gst-indent
 104     prepend_env_var(env, "PATH", os.path.join(SCRIPTDIR, 'gstreamer', 'tools'))
 105
 106     # Library and binary search paths
 107     prepend_env_var(env, "PATH", os.path.join(PREFIX_DIR, 'bin'))
 108     if lib_path_envvar != 'PATH':
 109         prepend_env_var(env, lib_path_envvar, os.path.join(PREFIX_DIR, 'lib'))
 110     elif 'QMAKE' in os.environ:
 111         # There's no RPATH on Windows, so we need to set PATH for the qt5 DLLs
 112         prepend_env_var(env, 'PATH', os.path.dirname(os.environ['QMAKE']))
 113
 114     meson = get_meson()
 115     targets_s = subprocess.check_output(meson + ['introspect', options.builddir, '--targets'])
 116     targets = json.loads(targets_s.decode())
 117     paths = set()
 118     mono_paths = set()
 119     srcdir_path = pathlib.Path(options.srcdir)
 120     for target in targets:
 121         filenames = listify(target['filename'])
 122         for filename in filenames:
 123             if filename.startswith(options.sysroot):
 124                 filename = filename[len(options.sysroot):]
 125             root = os.path.dirname(filename)
 126             if srcdir_path / "subprojects/gst-devtools/validate/plugins" in (srcdir_path / root).parents:
 127                 continue
 128             if filename.endswith('.dll'):
 129                 mono_paths.add(os.path.join(options.builddir, root))
 130             if typelib_reg.search(filename):
 131                 prepend_env_var(env, "GI_TYPELIB_PATH",
 132                                 os.path.join(options.builddir, root))
 133             elif sharedlib_reg.search(filename):
 134                 if not target['type'].startswith('shared'):
 135                     continue
 136                 if target['installed']:
 137                     if pluginpath_reg.search(os.path.normpath(stringify(target['install_filename']))):
 138                         prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(options.builddir, root))
 139                         continue
 140
 141                 prepend_env_var(env, lib_path_envvar,
 142                                 os.path.join(options.builddir, root))
 143             elif target['type'] == 'executable' and target['installed']:
 144                 paths.add(os.path.join(options.builddir, root))
 145
 146     for p in paths:
 147         prepend_env_var(env, 'PATH', p)
 148
 149     if os.name != 'nt':
 150         for p in mono_paths:
 151             prepend_env_var(env, "MONO_PATH", p)
 152
 153     presets = set()
 154     encoding_targets = set()
 155     pkg_dirs = set()
 156     python_dirs = set(["%s/subprojects/gstreamer/libs/gst/helpers/" % options.srcdir])
 157     if '--installed' in subprocess.check_output(meson + ['introspect', '-h']).decode():
 158         installed_s = subprocess.check_output(meson + ['introspect', options.builddir, '--installed'])
 159         for path, installpath in json.loads(installed_s.decode()).items():
 160             installpath_parts = pathlib.Path(installpath).parts
 161             path_parts = pathlib.Path(path).parts
 162
 163             # We want to add all python modules to the PYTHONPATH
 164             # in a manner consistent with the way they would be imported:
 165             # For example if the source path /home/meh/foo/bar.py
 166             # is to be installed in /usr/lib/python/site-packages/foo/bar.py,
 167             # we want to add /home/meh to the PYTHONPATH.
 168             # This will only work for projects where the paths to be installed
 169             # mirror the installed directory layout, for example if the path
 170             # is /home/meh/baz/bar.py and the install path is
 171             # /usr/lib/site-packages/foo/bar.py , we will not add anything
 172             # to PYTHONPATH, but the current approach works with pygobject
 173             # and gst-python at least.
 174             if 'site-packages' in installpath_parts:
 175                 install_subpath = os.path.join(*installpath_parts[installpath_parts.index('site-packages') + 1:])
 176                 if path.endswith(install_subpath):
 177                     python_dirs.add(path[:len (install_subpath) * -1])
 178
 179             if path.endswith('.prs'):
 180                 presets.add(os.path.dirname(path))
 181             elif path.endswith('.gep'):
 182                 encoding_targets.add(
 183                     os.path.abspath(os.path.join(os.path.dirname(path), '..')))
 184             elif path.endswith('.pc'):
 185                 # Is there a -uninstalled pc file for this file?
 186                 uninstalled = "{0}-uninstalled.pc".format(path[:-3])
 187                 if os.path.exists(uninstalled):
 188                     pkg_dirs.add(os.path.dirname(path))
 189
 190             if path.endswith('gstomx.conf'):
 191                 prepend_env_var(env, 'GST_OMX_CONFIG_DIR', os.path.dirname(path))
 192
 193         for p in presets:
 194             prepend_env_var(env, 'GST_PRESET_PATH', p)
 195
 196         for t in encoding_targets:
 197             prepend_env_var(env, 'GST_ENCODING_TARGET_PATH', t)
 198
 199         for pkg_dir in pkg_dirs:
 200             prepend_env_var(env, "PKG_CONFIG_PATH", pkg_dir)
 201     prepend_env_var(env, "PKG_CONFIG_PATH", os.path.join(options.builddir,
 202                                                          'subprojects',
 203                                                          'gst-plugins-good',
 204                                                          'pkgconfig'))
 205
 206     for python_dir in python_dirs:
 207         prepend_env_var(env, 'PYTHONPATH', python_dir)
 208
 209     mesonpath = os.path.join(SCRIPTDIR, "meson")
 210     if os.path.join(mesonpath):
 211         # Add meson/ into PYTHONPATH if we are using a local meson
 212         prepend_env_var(env, 'PYTHONPATH', mesonpath)
 213
 214     return env
 215
 216 def get_windows_shell():
 217     command = ['powershell.exe' ,'-noprofile', '-executionpolicy', 'bypass', '-file', 'cmd_or_ps.ps1']
 218     result = subprocess.check_output(command)
 219     return result.decode().strip()
 220
 221 # https://stackoverflow.com/questions/1871549/determine-if-python-is-running-inside-virtualenv
 222 def in_venv():
 223     return (hasattr(sys, 'real_prefix') or
 224             (hasattr(sys, 'base_prefix') and sys.base_prefix != sys.prefix))
 225
 226 if __name__ == "__main__":
 227     parser = argparse.ArgumentParser(prog="gstreamer-uninstalled")
 228
 229     parser.add_argument("--builddir",
 230                         default=DEFAULT_BUILDDIR,
 231                         help="The meson build directory")
 232     parser.add_argument("--srcdir",
 233                         default=SCRIPTDIR,
 234                         help="The top level source directory")
 235     parser.add_argument("--sysroot",
 236                         default='',
 237                         help="The sysroot path used during cross-compilation")
 238     options, args = parser.parse_known_args()
 239
 240     if not os.path.exists(options.builddir):
 241         print("GStreamer not built in %s\n\nBuild it and try again" %
 242               options.builddir)
 243         exit(1)
 244     options.builddir = os.path.abspath(options.builddir)
 245
 246     if not os.path.exists(options.srcdir):
 247         print("The specified source dir does not exist" %
 248               options.srcdir)
 249         exit(1)
 250
 251     # The following incantation will retrieve the current branch name.
 252     gst_version = git("rev-parse", "--symbolic-full-name", "--abbrev-ref", "HEAD",
 253                       repository_path=options.srcdir).strip('\n')
 254
 255     if not args:
 256         if os.name is 'nt':
 257             shell = get_windows_shell()
 258             if shell == 'powershell.exe':
 259                 args = ['powershell.exe']
 260                 args += ['-NoLogo', '-NoExit']
 261                 prompt = 'function global:prompt {  "[gst-' + gst_version + '"+"] PS " + $PWD + "> "}'
 262                 args += ['-Command', prompt]
 263             else:
 264                 args = [os.environ.get("COMSPEC", r"C:\WINDOWS\system32\cmd.exe")]
 265                 args += ['/k', 'prompt [gst-{}] $P$G'.format(gst_version)]
 266         else:
 267             args = [os.environ.get("SHELL", os.path.realpath("/bin/sh"))]
 268         if "bash" in args[0] and not strtobool(os.environ.get("GST_BUILD_DISABLE_PS1_OVERRIDE", r"FALSE")):
 269             bashrc = os.path.expanduser('~/.bashrc')
 270             if os.path.exists(bashrc):
 271                 tmprc = tempfile.NamedTemporaryFile(mode='w')
 272                 with open(bashrc, 'r') as src:
 273                     shutil.copyfileobj(src, tmprc)
 274                 tmprc.write('\nexport PS1="[gst-%s] $PS1"' % gst_version)
 275                 tmprc.flush()
 276                 # Let the GC remove the tmp file
 277                 args.append("--rcfile")
 278                 args.append(tmprc.name)
 279     try:
 280         exit(subprocess.call(args, close_fds=False,
 281                              env=get_subprocess_env(options, gst_version)))
 282     except subprocess.CalledProcessError as e:
 283         exit(e.returncode)