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