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143 lines
3.5 KiB
Text
143 lines
3.5 KiB
Text
# GStreamer
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# Copyright (C) 2015 Mathieu Duponchelle <mathieu.duponchelle@opencreed.com>
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#
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# bash/zsh completion support for gst-launch
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Library General Public
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# License as published by the Free Software Foundation; either
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# version 2 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Library General Public License for more details.
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#
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# You should have received a copy of the GNU Library General Public
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# License along with this library; if not, write to the
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# Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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# Boston, MA 02110-1301, USA.
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_GST_HELPERDIR="${BASH_SOURCE[0]%/*}/../helpers"
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if [[ ! -d "$_GST_HELPERDIR" ]]; then
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_GST_HELPERDIR="$(pkg-config --variable=helpersdir gstreamer-1.0)"
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else
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_GST_HELPERDIR=`cd "$_GST_HELPERDIR"; pwd`
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fi
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# Common definitions
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. "$_GST_HELPERDIR"/gst
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_GST_HELPER="$_GST_HELPERDIR/gst-completion-helper-1.0"
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_gst_launch_all_arguments ()
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{
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COMPREPLY=( $(compgen -W "$(gst-launch-1.0 --help-all | grep -oh '[[:graph:]]*--[[:graph:]]*' | cut -d'=' -f1)" -- $cur) )
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}
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_gst_complete_compatible_elements ()
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{
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COMPREPLY=( $(compgen -W "$($_GST_HELPER --compatible-with $previous_element)" -- $cur) )
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}
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_gst_complete_all_elements ()
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{
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COMPREPLY=( $(compgen -W "$($_GST_HELPER -l)" -- $cur) )
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}
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_gst_complete_element_properties ()
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{
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COMPREPLY=( $(compgen -W "$($_GST_HELPER --element-properties $previous_element)" -- $cur) )
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}
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_gstlaunch___exclude_ () { _gst_mandatory_argument; }
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_gst_launch_main ()
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{
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local i=1 command function_exists previous_element have_previous_element=0 completion_func
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while [[ $i -ne $COMP_CWORD ]];
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do
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local var
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var="${COMP_WORDS[i]}"
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if [[ "$var" == "--"* ]]
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then
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command="$var"
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fi
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i=$(($i+1))
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done
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i=1
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while [[ $i -ne $COMP_CWORD ]];
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do
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local var
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var="${COMP_WORDS[i]}"
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if [[ "$var" == "--"* ]]
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then
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i=$(($i+1))
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continue
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fi
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$(gst-inspect-1.0 --exists $var)
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if [ $? -eq 0 ]
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then
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previous_element="$var"
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have_previous_element=1
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fi
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i=$(($i+1))
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done
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if [[ "$command" == "--gst"* ]]; then
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completion_func="_${command//-/_}"
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else
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completion_func="_gstlaunch_${command//-/_}"
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fi
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# Seems like bash doesn't like "exclude" in function names
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if [[ "$completion_func" == "_gstlaunch___exclude" ]]
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then
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completion_func="_gstlaunch___exclude_"
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fi
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declare -f $completion_func >/dev/null 2>&1
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function_exists=$?
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if [[ "$cur" == "--"* ]]; then
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_gst_launch_all_arguments
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elif [ $function_exists -eq 0 ]
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then
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$completion_func
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elif [ $have_previous_element -ne 0 ] && [[ "$prev" == "!" ]]
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then
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_gst_complete_compatible_elements
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elif [ $have_previous_element -ne 0 ]
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then
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_gst_complete_element_properties
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else
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_gst_complete_all_elements
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fi
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}
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_gst_launch_func_wrap ()
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{
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local cur prev
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cur="${COMP_WORDS[COMP_CWORD]}"
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prev="${COMP_WORDS[COMP_CWORD-1]}"
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$1
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}
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# Setup completion for certain functions defined above by setting common
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# variables and workarounds.
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# This is NOT a public function; use at your own risk.
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_gst_launch_complete ()
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{
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local wrapper="__launch_wrap${2}"
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eval "$wrapper () { _gst_launch_func_wrap $2 ; }"
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complete -o bashdefault -o default -o nospace -F $wrapper $1 2>/dev/null \
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|| complete -o default -o nospace -F $wrapper $1
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}
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_gst_launch_complete gst-launch-1.0 _gst_launch_main
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