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