gst-uninstalled.py

   1 #!/usr/bin/env python3
   2
   3 import argparse
   4 import json
   5 import os
   6 import platform
   7 import re
   8 import site
   9 import shutil
  10 import subprocess
  11 import sys
  12 import tempfile
  13
  14 from common import get_meson
  15
  16 SCRIPTDIR = os.path.abspath(os.path.dirname(__file__))
  17
  18
  19 def prepend_env_var(env, var, value):
  20     env[var] = os.pathsep + value + os.pathsep + env.get(var, "")
  21     env[var] = env[var].replace(os.pathsep + os.pathsep, os.pathsep).strip(os.pathsep)
  22
  23
  24 def get_subprocess_env(options):
  25     env = os.environ.copy()
  26
  27     env["CURRENT_GST"] = os.path.normpath(SCRIPTDIR)
  28     env["GST_VALIDATE_SCENARIOS_PATH"] = os.path.normpath(
  29         "%s/subprojects/gst-devtools/validate/data/scenarios" % SCRIPTDIR)
  30     env["GST_VALIDATE_PLUGIN_PATH"] = os.path.normpath(
  31         "%s/subprojects/gst-devtools/validate/plugins" % options.builddir)
  32     env["GST_VALIDATE_APPS_DIR"] = os.path.normpath(
  33         "%s/subprojects/gst-editing-services/tests/validate" % SCRIPTDIR)
  34     prepend_env_var(env, "PATH", os.path.normpath(
  35         "%s/subprojects/gst-devtools/validate/tools" % options.builddir))
  36     prepend_env_var(env, "PATH", os.path.join(SCRIPTDIR, 'meson'))
  37     env["GST_VERSION"] = options.gst_version
  38     env["GST_ENV"] = 'gst-' + options.gst_version
  39     env["GST_PLUGIN_SYSTEM_PATH"] = ""
  40     env["GST_PLUGIN_SCANNER"] = os.path.normpath(
  41         "%s/subprojects/gstreamer/libs/gst/helpers/gst-plugin-scanner" % options.builddir)
  42     env["GST_PTP_HELPER"] = os.path.normpath(
  43         "%s/subprojects/gstreamer/libs/gst/helpers/gst-ptp-helper" % options.builddir)
  44     env["GST_REGISTRY"] = os.path.normpath(options.builddir + "/registry.dat")
  45
  46     sharedlib_reg = re.compile(r'\.so|\.dylib|\.dll')
  47     typelib_reg = re.compile(r'.*\.typelib$')
  48     pluginpath_reg = re.compile(r'lib.*' + re.escape(os.path.normpath('/gstreamer-1.0/')))
  49
  50     if os.name is 'nt':
  51         lib_path_envvar = 'PATH'
  52     elif platform.system() == 'Darwin':
  53         lib_path_envvar = 'DYLD_LIBRARY_PATH'
  54     else:
  55         lib_path_envvar = 'LD_LIBRARY_PATH'
  56
  57     prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(SCRIPTDIR, 'subprojects',
  58                                                         'gst-python', 'plugin'))
  59
  60     meson, mesonconf, mesonintrospect = get_meson()
  61     targets_s = subprocess.check_output([sys.executable, mesonintrospect, options.builddir, '--targets'])
  62     targets = json.loads(targets_s.decode())
  63     paths = set()
  64     for target in targets:
  65         filename = target['filename']
  66         root = os.path.dirname(filename)
  67         if typelib_reg.search(filename):
  68             prepend_env_var(env, "GI_TYPELIB_PATH",
  69                             os.path.join(options.builddir, root))
  70         elif sharedlib_reg.search(filename):
  71             if target.get('type') != "shared library":
  72                 continue
  73
  74             if target.get('installed') and pluginpath_reg.search(os.path.normpath(target.get('install_filename'))):
  75                 prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(options.builddir, root))
  76                 continue
  77
  78             prepend_env_var(env, lib_path_envvar,
  79                             os.path.join(options.builddir, root))
  80         elif target.get('type') == 'executable' and target.get('installed'):
  81             paths.add(os.path.join(options.builddir, root))
  82
  83     for p in paths:
  84         prepend_env_var(env, 'PATH', p)
  85
  86     presets = set()
  87     encoding_targets = set()
  88     pkg_dirs = set()
  89     if '--installed' in subprocess.check_output([sys.executable, mesonintrospect, '-h']).decode():
  90         installed_s = subprocess.check_output([sys.executable, mesonintrospect,
  91                                                options.builddir, '--installed'])
  92         for path, installpath in json.loads(installed_s.decode()).items():
  93             if path.endswith('.prs'):
  94                 presets.add(os.path.dirname(path))
  95             elif path.endswith('.gep'):
  96                 encoding_targets.add(
  97                     os.path.abspath(os.path.join(os.path.dirname(path), '..')))
  98             elif path.endswith('.pc'):
  99                 # Is there a -uninstalled pc file for this file?
 100                 uninstalled = "{0}-uninstalled.pc".format(path[:-3])
 101                 if os.path.exists(uninstalled):
 102                     pkg_dirs.add(os.path.dirname(path))
 103
 104         for p in presets:
 105             prepend_env_var(env, 'GST_PRESET_PATH', p)
 106
 107         for t in encoding_targets:
 108             prepend_env_var(env, 'GST_ENCODING_TARGET_PATH', t)
 109
 110         for pkg_dir in pkg_dirs:
 111             prepend_env_var(env, "PKG_CONFIG_PATH", pkg_dir)
 112     prepend_env_var(env, "PKG_CONFIG_PATH", os.path.join(options.builddir,
 113                                                          'subprojects',
 114                                                          'gst-plugins-good',
 115                                                          'pkgconfig'))
 116
 117     mesonpath = os.path.join(SCRIPTDIR, "meson")
 118     if os.path.join(mesonpath):
 119         # Add meson/ into PYTHONPATH if we are using a local meson
 120         prepend_env_var(env, 'PYTHONPATH', mesonpath)
 121
 122     return env
 123
 124
 125 def python_env(options, unset_env=False):
 126     """
 127     Setup our overrides_hack.py as sitecustomize.py script in user
 128     site-packages if unset_env=False, else unset, previously set
 129     env.
 130     """
 131     subprojects_path = os.path.join(options.builddir, "subprojects")
 132     gst_python_path = os.path.join(SCRIPTDIR, "subprojects", "gst-python")
 133     if not os.path.exists(os.path.join(subprojects_path, "gst-python")) or \
 134             not os.path.exists(gst_python_path):
 135         return False
 136
 137     sitepackages = site.getusersitepackages()
 138     if not sitepackages:
 139         return False
 140
 141     sitecustomize = os.path.join(sitepackages, "sitecustomize.py")
 142     overrides_hack = os.path.join(gst_python_path, "testsuite", "overrides_hack.py")
 143
 144     if not unset_env:
 145         if os.path.exists(sitecustomize):
 146             if os.path.realpath(sitecustomize) == overrides_hack:
 147                 print("Customize user site script already linked to the GStreamer one")
 148                 return False
 149
 150             old_sitecustomize = os.path.join(sitepackages,
 151                                             "old.sitecustomize.gstuninstalled.py")
 152             shutil.move(sitecustomize, old_sitecustomize)
 153         elif not os.path.exists(sitepackages):
 154             os.makedirs(sitepackages)
 155
 156         os.symlink(overrides_hack, sitecustomize)
 157         return os.path.realpath(sitecustomize) == overrides_hack
 158     else:
 159         if not os.path.realpath(sitecustomize) == overrides_hack:
 160             return False
 161
 162         os.remove(sitecustomize)
 163         old_sitecustomize = os.path.join(sitepackages,
 164                                             "old.sitecustomize.gstuninstalled.py")
 165
 166         if os.path.exists(old_sitecustomize):
 167             shutil.move(old_sitecustomize, sitecustomize)
 168
 169         return True
 170
 171
 172 if __name__ == "__main__":
 173     parser = argparse.ArgumentParser(prog="gstreamer-uninstalled")
 174
 175     parser.add_argument("--builddir",
 176                         default=os.path.join(SCRIPTDIR, "build"),
 177                         help="The meson build directory")
 178     parser.add_argument("--srcdir",
 179                         default=SCRIPTDIR,
 180                         help="The top level source directory")
 181     parser.add_argument("--gst-version", default="master",
 182                         help="The GStreamer major version")
 183     options, args = parser.parse_known_args()
 184
 185     if not os.path.exists(options.builddir):
 186         print("GStreamer not built in %s\n\nBuild it and try again" %
 187               options.builddir)
 188         exit(1)
 189
 190     if not os.path.exists(options.srcdir):
 191         print("The specified source dir does not exist" %
 192               options.srcdir)
 193         exit(1)
 194
 195     if not args:
 196         if os.name is 'nt':
 197             args = [os.environ.get("COMSPEC", r"C:\WINDOWS\system32\cmd.exe")]
 198         else:
 199             args = [os.environ.get("SHELL", os.path.realpath("/bin/sh"))]
 200         if "bash" in args[0]:
 201             bashrc = os.path.expanduser('~/.bashrc')
 202             if os.path.exists(bashrc):
 203                 tmprc = tempfile.NamedTemporaryFile(mode='w')
 204                 with open(bashrc, 'r') as src:
 205                     shutil.copyfileobj(src, tmprc)
 206                 tmprc.write('\nexport PS1="[gst-%s] $PS1"' % options.gst_version)
 207                 tmprc.flush()
 208                 # Let the GC remove the tmp file
 209                 args.append("--rcfile")
 210                 args.append(tmprc.name)
 211     python_set = python_env(options)
 212     try:
 213         exit(subprocess.call(args, cwd=options.srcdir,
 214                              env=get_subprocess_env(options)))
 215     except subprocess.CalledProcessError as e:
 216         exit(e.returncode)
 217     finally:
 218         if python_set:
 219             python_env(options, unset_env=True)