gst-uninstalled.py

   1 #!/usr/bin/env python3
   2
   3 import argparse
   4 import os
   5 import re
   6 import site
   7 import subprocess
   8
   9
  10 SCRIPTDIR = os.path.abspath(os.path.dirname(__file__))
  11
  12
  13 def prepend_env_var(env, var, value):
  14     env[var] = os.pathsep + value + os.pathsep + env.get(var, "")
  15     env[var] = env[var].replace(os.pathsep + os.pathsep, os.pathsep).strip(os.pathsep)
  16
  17
  18 def set_prompt_var(options, env):
  19     ps1 = env.get("PS1")
  20     if ps1:
  21         env["PS1"] = "[gst-%s] %s" % (options.gst_version, ps1)
  22
  23     prompt = env.get("PROMPT")
  24     if prompt:
  25         env["PROMPT"] = "[gst-%s] %s" % (options.gst_version, prompt)
  26
  27
  28 def get_subprocess_env(options):
  29     env = os.environ.copy()
  30
  31     PATH = env.get("PATH", "")
  32     subprojects_path = os.path.join(options.builddir, "subprojects")
  33     for proj in os.listdir(subprojects_path):
  34         projpath = os.path.join(subprojects_path, proj)
  35         if not os.path.exists(projpath):
  36             print("Subproject %s does not exist in %s.,\n"
  37                   " Make sure to build everything properly "
  38                   "and try again." % (proj, projpath))
  39             exit(1)
  40
  41         envvars_file = os.path.join(projpath, os.path.basename(projpath) + "-uninstalled-envvars.py")
  42         if os.path.exists(envvars_file):
  43             envvars_env = {"envvars": {}}
  44             with open(envvars_file) as f:
  45                 code = compile(f.read(), envvars_file, 'exec')
  46                 exec(code, None, envvars_env)
  47             for var, value in envvars_env["envvars"].items():
  48                 if var.startswith("+"):
  49                     prepend_env_var(env, var, value.strip("+"))
  50                 else:
  51                     env[var] = value
  52
  53         toolsdir = os.path.join(projpath, "tools")
  54         if os.path.exists(toolsdir):
  55             prepend_env_var(env, "PATH", toolsdir)
  56
  57         prepend_env_var(env, "GST_PLUGIN_PATH", projpath)
  58
  59     env["CURRENT_GST"] = os.path.normpath(SCRIPTDIR + "/subprojects")
  60     env["GST_VALIDATE_SCENARIOS_PATH"] = os.path.normpath(
  61         "%s/subprojects/gst-devtools/validate/data/scenarios" % SCRIPTDIR)
  62     env["GST_VALIDATE_PLUGIN_PATH"] = os.path.normpath(
  63         "%s/subprojects/gst-devtools/validate/plugins" % options.builddir)
  64     env["GST_VALIDATE_APPS_DIR"] = os.path.normpath(
  65         "%s/subprojects/gst-editing-services/tests/validate" % SCRIPTDIR)
  66     prepend_env_var(env, "PATH", os.path.normpath(
  67         "%s/subprojects/gst-devtools/validate/tools" % options.builddir))
  68     env["PATH"] += os.pathsep + PATH
  69     env["GST_VERSION"] = options.gst_version
  70     env["GST_PLUGIN_SYSTEM_PATH"] = ""
  71     env["GST_PLUGIN_SCANNER"] = os.path.normpath(
  72         "%s/subprojects/gstreamer/libs/gst/helpers/gst-plugin-scanner" % options.builddir)
  73     env["GST_PTP_HELPER"] = os.path.normpath(
  74         "%s/subprojects/gstreamer/libs/gst/helpers/gst-ptp-helper" % options.builddir)
  75     env["GST_REGISTRY"] = os.path.normpath(options.builddir + "/registry.dat")
  76     prepend_env_var(env, 'PYTHONPATH', ':'.join(site.getsitepackages()))
  77     env["PYTHONPATH"] = env["PYTHONPATH"] + ':' + os.path.normpath(
  78         options.builddir + '/subprojects/gst-python')
  79
  80     filename = "meson.build"
  81     sharedlib_reg = re.compile(r'\.so$|\.dylib$')
  82     typelib_reg = re.compile(r'.*\.typelib$')
  83     for root, dirnames, filenames in os.walk(os.path.join(options.builddir,
  84                                                           'subprojects')):
  85         has_typelib = False
  86         has_shared = False
  87         for filename in filenames:
  88             if typelib_reg.search(filename) and not has_typelib:
  89                 has_typelib = True
  90                 prepend_env_var(env, "GI_TYPELIB_PATH",
  91                                 os.path.join(options.builddir, root))
  92                 if has_shared:
  93                     break
  94             elif sharedlib_reg.search(filename) and not has_shared:
  95                 has_shared = True
  96                 prepend_env_var(env, "LD_LIBRARY_PATH",
  97                                 os.path.join(options.builddir, root))
  98                 prepend_env_var(env, "DYLD_LIBRARY_PATH",
  99                                 os.path.join(options.builddir, root))
 100                 if has_typelib:
 101                     break
 102
 103
 104     set_prompt_var(options, env)
 105
 106     return env
 107
 108
 109 if __name__ == "__main__":
 110     parser = argparse.ArgumentParser(prog="gstreamer-uninstalled")
 111
 112     parser.add_argument("--builddir",
 113                         default=os.path.join(SCRIPTDIR, "build"),
 114                         help="The meson build directory")
 115     parser.add_argument("--gst-version", default="master",
 116                         help="The GStreamer major version")
 117     options, args = parser.parse_known_args()
 118
 119     if not os.path.exists(options.builddir):
 120         print("GStreamer not built in %s\n\nBuild it and try again" %
 121               options.builddir)
 122         exit(1)
 123
 124     if not args:
 125         args = [os.environ.get("SHELL", os.path.realpath("/bin/sh"))]
 126         if args[0] == "/bin/bash":
 127             args.append("--noprofile")
 128
 129     try:
 130         exit(subprocess.run(args, env=get_subprocess_env(options)).returncode)
 131     except subprocess.CalledProcessError as e:
 132         exit(e.returncode)