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     mono_paths = set()
  65     for target in targets:
  66         filename = target['filename']
  67         root = os.path.dirname(filename)
  68         if filename.endswith('.dll'):
  69             mono_paths.add(os.path.join(options.builddir, root))
  70         if typelib_reg.search(filename):
  71             prepend_env_var(env, "GI_TYPELIB_PATH",
  72                             os.path.join(options.builddir, root))
  73         elif sharedlib_reg.search(filename):
  74             if target.get('type') != "shared library":
  75                 continue
  76
  77             if target.get('installed') and pluginpath_reg.search(os.path.normpath(target.get('install_filename'))):
  78                 prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(options.builddir, root))
  79                 continue
  80
  81             prepend_env_var(env, lib_path_envvar,
  82                             os.path.join(options.builddir, root))
  83         elif target.get('type') == 'executable' and target.get('installed'):
  84             paths.add(os.path.join(options.builddir, root))
  85
  86     for p in paths:
  87         prepend_env_var(env, 'PATH', p)
  88
  89     if os.name != 'nt':
  90         for p in mono_paths:
  91             prepend_env_var(env, "MONO_PATH", p)
  92
  93     presets = set()
  94     encoding_targets = set()
  95     pkg_dirs = set()
  96     if '--installed' in subprocess.check_output([sys.executable, mesonintrospect, '-h']).decode():
  97         installed_s = subprocess.check_output([sys.executable, mesonintrospect,
  98                                                options.builddir, '--installed'])
  99         for path, installpath in json.loads(installed_s.decode()).items():
 100             if path.endswith('.prs'):
 101                 presets.add(os.path.dirname(path))
 102             elif path.endswith('.gep'):
 103                 encoding_targets.add(
 104                     os.path.abspath(os.path.join(os.path.dirname(path), '..')))
 105             elif path.endswith('.pc'):
 106                 # Is there a -uninstalled pc file for this file?
 107                 uninstalled = "{0}-uninstalled.pc".format(path[:-3])
 108                 if os.path.exists(uninstalled):
 109                     pkg_dirs.add(os.path.dirname(path))
 110
 111         for p in presets:
 112             prepend_env_var(env, 'GST_PRESET_PATH', p)
 113
 114         for t in encoding_targets:
 115             prepend_env_var(env, 'GST_ENCODING_TARGET_PATH', t)
 116
 117         for pkg_dir in pkg_dirs:
 118             prepend_env_var(env, "PKG_CONFIG_PATH", pkg_dir)
 119     prepend_env_var(env, "PKG_CONFIG_PATH", os.path.join(options.builddir,
 120                                                          'subprojects',
 121                                                          'gst-plugins-good',
 122                                                          'pkgconfig'))
 123
 124     mesonpath = os.path.join(SCRIPTDIR, "meson")
 125     if os.path.join(mesonpath):
 126         # Add meson/ into PYTHONPATH if we are using a local meson
 127         prepend_env_var(env, 'PYTHONPATH', mesonpath)
 128
 129     return env
 130
 131
 132 def python_env(options, unset_env=False):
 133     """
 134     Setup our overrides_hack.py as sitecustomize.py script in user
 135     site-packages if unset_env=False, else unset, previously set
 136     env.
 137     """
 138     subprojects_path = os.path.join(options.builddir, "subprojects")
 139     gst_python_path = os.path.join(SCRIPTDIR, "subprojects", "gst-python")
 140     if not os.path.exists(os.path.join(subprojects_path, "gst-python")) or \
 141             not os.path.exists(gst_python_path):
 142         return False
 143
 144     sitepackages = site.getusersitepackages()
 145     if not sitepackages:
 146         return False
 147
 148     sitecustomize = os.path.join(sitepackages, "sitecustomize.py")
 149     overrides_hack = os.path.join(gst_python_path, "testsuite", "overrides_hack.py")
 150
 151     if not unset_env:
 152         if os.path.exists(sitecustomize):
 153             if os.path.realpath(sitecustomize) == overrides_hack:
 154                 print("Customize user site script already linked to the GStreamer one")
 155                 return False
 156
 157             old_sitecustomize = os.path.join(sitepackages,
 158                                             "old.sitecustomize.gstuninstalled.py")
 159             shutil.move(sitecustomize, old_sitecustomize)
 160         elif not os.path.exists(sitepackages):
 161             os.makedirs(sitepackages)
 162
 163         os.symlink(overrides_hack, sitecustomize)
 164         return os.path.realpath(sitecustomize) == overrides_hack
 165     else:
 166         if not os.path.realpath(sitecustomize) == overrides_hack:
 167             return False
 168
 169         os.remove(sitecustomize)
 170         old_sitecustomize = os.path.join(sitepackages,
 171                                             "old.sitecustomize.gstuninstalled.py")
 172
 173         if os.path.exists(old_sitecustomize):
 174             shutil.move(old_sitecustomize, sitecustomize)
 175
 176         return True
 177
 178
 179 if __name__ == "__main__":
 180     parser = argparse.ArgumentParser(prog="gstreamer-uninstalled")
 181
 182     parser.add_argument("--builddir",
 183                         default=os.path.join(SCRIPTDIR, "build"),
 184                         help="The meson build directory")
 185     parser.add_argument("--srcdir",
 186                         default=SCRIPTDIR,
 187                         help="The top level source directory")
 188     parser.add_argument("--gst-version", default="master",
 189                         help="The GStreamer major version")
 190     options, args = parser.parse_known_args()
 191
 192     if not os.path.exists(options.builddir):
 193         print("GStreamer not built in %s\n\nBuild it and try again" %
 194               options.builddir)
 195         exit(1)
 196
 197     if not os.path.exists(options.srcdir):
 198         print("The specified source dir does not exist" %
 199               options.srcdir)
 200         exit(1)
 201
 202     if not args:
 203         if os.name is 'nt':
 204             args = [os.environ.get("COMSPEC", r"C:\WINDOWS\system32\cmd.exe")]
 205         else:
 206             args = [os.environ.get("SHELL", os.path.realpath("/bin/sh"))]
 207         if "bash" in args[0]:
 208             bashrc = os.path.expanduser('~/.bashrc')
 209             if os.path.exists(bashrc):
 210                 tmprc = tempfile.NamedTemporaryFile(mode='w')
 211                 with open(bashrc, 'r') as src:
 212                     shutil.copyfileobj(src, tmprc)
 213                 tmprc.write('\nexport PS1="[gst-%s] $PS1"' % options.gst_version)
 214                 tmprc.flush()
 215                 # Let the GC remove the tmp file
 216                 args.append("--rcfile")
 217                 args.append(tmprc.name)
 218     python_set = python_env(options)
 219     try:
 220         exit(subprocess.call(args, cwd=options.srcdir,
 221                              env=get_subprocess_env(options)))
 222     except subprocess.CalledProcessError as e:
 223         exit(e.returncode)
 224     finally:
 225         if python_set:
 226             python_env(options, unset_env=True)