#!/bin/bash -i
# set up environment to use and develop gstreamer and friends uninstalled
#
# set up PATH, LD_LIBRARY_PATH, PKG_CONFIG_PATH, GST_PLUGIN_PATH, MANPATH,
# PYTHONPATH
#
# prefer uninstalled versions, but also put installed ones on the path
#
# this script assumes that the relevant modules are checked out one by one
# under a given tree specified below in MYGST
#
# symlink this script in a directory in your path (for example $HOME/bin)
# to a name that reflects the version of your checkout
#
# e.g.:
# - mkdir $HOME/gst/head
# - ln -sf gst-uninstalled $HOME/bin/gst-head
# - checkout copies of gstreamer modules in $HOME/gst/head
# - gst-head

# this script is run -i so that PS1 doesn't get cleared

# change this variable to a different location depending on where you
# store your cvs checkouts
MYGST=$HOME/gst

# extract version from $0
# if this script is called "gst-head" then version will be "head"
VERSION=`echo $0 | sed s/.*gst-//g`

# base path under which dirs are installed
GST=$MYGST/$VERSION
if test ! -e $GST; then
  echo "$GST does not exist !"
  exit
fi

# set up a bunch of paths
PATH=$GST/gstreamer/tools:$GST/gst-plugins/tools:$GST/gst-player/src:$GST/gst-editor/src:$GST/prefix/bin:$PATH
export LD_LIBRARY_PATH=$GST/prefix/lib:$LD_LIBRARY_PATH
export PKG_CONFIG_PATH=$GST/gstreamer/pkgconfig:$GST/gst-plugins/pkgconfig
export GST_PLUGIN_PATH=$GST/gstreamer:$GST/gst-plugins:$GST/gst-ffmpeg
export MANPATH=$GST/gstreamer/tools:$GST/prefix/share/man:$MANPATH
export PYTHONPATH=$GST/gst-python:$PYTHONPATH

# if we got a command, run it, else start a shell
if test ! -z "$1";
then
  $@
  exit $?
fi

# set up prompt to help us remember we're in a subshell and start $SHELL
cd $GST
PS1="[gst-$VERSION] $PS1" $SHELL