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gst-uninstalled: Display current git branch name in the shell prompt

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This is really useful when using multiple git worktrees.

https://bugzilla.gnome.org/show_bug.cgi?id=796989
This commit is contained in:
Philippe Normand 2018-08-17 15:33:09 +01:00
parent d3ea533b20
commit c78f0ef222
2 changed files with 10 additions and 8 deletions
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2
common.py
View file

@ -44,7 +44,7 @@ class Colors:
def git(*args, repository_path='.'):
return subprocess.check_output(["git"] + list(args), cwd=repository_path,
stderr=subprocess.STDOUT).decode()
).decode()
def accept_command(commands):
"""Search @commands and returns the first found absolute path."""

16
gst-uninstalled.py
View file

@ -15,6 +15,7 @@ import tempfile
from distutils.sysconfig import get_python_lib
from common import get_meson
from common import git
SCRIPTDIR = os.path.dirname(os.path.realpath(__file__))
PREFIX_DIR = os.path.join(SCRIPTDIR, 'prefix')
@ -29,7 +30,7 @@ def prepend_env_var(env, var, value):
env[var] = env[var].replace(os.pathsep + os.pathsep, os.pathsep).strip(os.pathsep)
def get_subprocess_env(options):
def get_subprocess_env(options, gst_version):
env = os.environ.copy()
env["CURRENT_GST"] = os.path.normpath(SCRIPTDIR)
@ -42,8 +43,8 @@ def get_subprocess_env(options):
prepend_env_var(env, "PATH", os.path.normpath(
"%s/subprojects/gst-devtools/validate/tools" % options.builddir))
prepend_env_var(env, "PATH", os.path.join(SCRIPTDIR, 'meson'))
env["GST_VERSION"] = options.gst_version
env["GST_ENV"] = 'gst-' + options.gst_version
env["GST_VERSION"] = gst_version
env["GST_ENV"] = 'gst-' + gst_version
env["GST_PLUGIN_SYSTEM_PATH"] = ""
env["GST_PLUGIN_SCANNER"] = os.path.normpath(
"%s/subprojects/gstreamer/libs/gst/helpers/gst-plugin-scanner" % options.builddir)
@ -197,8 +198,6 @@ if __name__ == "__main__":
parser.add_argument("--srcdir",
default=SCRIPTDIR,
help="The top level source directory")
parser.add_argument("--gst-version", default="master",
help="The GStreamer major version")
options, args = parser.parse_known_args()
if not os.path.exists(options.builddir):
@ -212,6 +211,9 @@ if __name__ == "__main__":
options.srcdir)
exit(1)
# The following incantation will retrieve the current branch name.
gst_version = git("rev-parse", "--symbolic-full-name", "--abbrev-ref", "HEAD", repository_path=options.srcdir)
if not args:
if os.name is 'nt':
args = [os.environ.get("COMSPEC", r"C:\WINDOWS\system32\cmd.exe")]
@ -223,13 +225,13 @@ if __name__ == "__main__":
tmprc = tempfile.NamedTemporaryFile(mode='w')
with open(bashrc, 'r') as src:
shutil.copyfileobj(src, tmprc)
tmprc.write('\nexport PS1="[gst-%s] $PS1"' % options.gst_version)
tmprc.write('\nexport PS1="[gst-%s] $PS1"' % gst_version)
tmprc.flush()
# Let the GC remove the tmp file
args.append("--rcfile")
args.append(tmprc.name)
try:
exit(subprocess.call(args, cwd=options.srcdir, close_fds=False,
env=get_subprocess_env(options)))
env=get_subprocess_env(options, gst_version)))
except subprocess.CalledProcessError as e:
exit(e.returncode)