data/completions/gst-launch-1.0

   1 # GStreamer
   2 # Copyright (C) 2015 Mathieu Duponchelle <mathieu.duponchelle@opencreed.com>
   3 #
   4 # bash/zsh completion support for gst-launch
   5 #
   6 # This library is free software; you can redistribute it and/or
   7 # modify it under the terms of the GNU Library General Public
   8 # License as published by the Free Software Foundation; either
   9 # version 2 of the License, or (at your option) any later version.
  10 #
  11 # This library is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 # Library General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU Library General Public
  17 # License along with this library; if not, write to the
  18 # Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
  19 # Boston, MA 02110-1301, USA.
  20
  21 _GST_HELPERDIR="${BASH_SOURCE[0]%/*}/../helpers"
  22
  23 if [[ ! -d "$_GST_HELPERDIR" ]]; then
  24         _GST_HELPERDIR="$(pkg-config --variable=helpersdir gstreamer-1.0)"
  25 else
  26         _GST_HELPERDIR=`cd "$_GST_HELPERDIR"; pwd`
  27 fi
  28
  29 # Common definitions
  30 . "$_GST_HELPERDIR"/gst
  31
  32 _GST_HELPER="$_GST_HELPERDIR/gst-completion-helper-1.0"
  33
  34 _gst_launch_all_arguments ()
  35 {
  36         COMPREPLY=( $(compgen -W "$(gst-launch-1.0 --help-all | grep -oh '[[:graph:]]*--[[:graph:]]*' | cut -d'=' -f1)" -- $cur) )
  37 }
  38
  39 _gst_complete_compatible_elements ()
  40 {
  41         COMPREPLY=( $(compgen -W "$($_GST_HELPER --compatible-with $previous_element)" -- $cur) )
  42 }
  43
  44 _gst_complete_all_elements ()
  45 {
  46         COMPREPLY=( $(compgen -W "$($_GST_HELPER -l)" -- $cur) )
  47 }
  48
  49 _gst_complete_element_properties ()
  50 {
  51         COMPREPLY=( $(compgen -W "$($_GST_HELPER --element-properties $previous_element)" -- $cur) )
  52 }
  53
  54 _gstlaunch___exclude_ () { _gst_mandatory_argument; }
  55
  56 _gst_launch_main ()
  57 {
  58         local i=1 command function_exists previous_element have_previous_element=0 completion_func
  59
  60         while [[ $i -ne $COMP_CWORD ]];
  61                 do
  62                         local var
  63                         var="${COMP_WORDS[i]}"
  64                         if [[ "$var" == "--"* ]]
  65                         then
  66                                 command="$var"
  67                         fi
  68                 i=$(($i+1))
  69                 done
  70
  71         i=1
  72         while [[ $i -ne $COMP_CWORD ]];
  73                 do
  74                         local var
  75                         var="${COMP_WORDS[i]}"
  76
  77                         if [[ "$var" == "--"* ]]
  78                         then
  79                                 i=$(($i+1))
  80                                 continue
  81                         fi
  82
  83                         $(gst-inspect-1.0 --exists $var)
  84                         if [ $? -eq 0 ]
  85                         then
  86                                 previous_element="$var"
  87                                 have_previous_element=1
  88                         fi
  89                 i=$(($i+1))
  90                 done
  91
  92         if [[ "$command" == "--gst"* ]]; then
  93                 completion_func="_${command//-/_}"
  94         else
  95                 completion_func="_gstlaunch_${command//-/_}"
  96         fi
  97
  98         # Seems like bash doesn't like "exclude" in function names
  99         if [[ "$completion_func" == "_gstlaunch___exclude" ]]
 100         then
 101                 completion_func="_gstlaunch___exclude_"
 102         fi
 103
 104         declare -f $completion_func >/dev/null 2>&1
 105
 106         function_exists=$?
 107
 108         if [[ "$cur" == "--"* ]]; then
 109                 _gst_launch_all_arguments
 110         elif [ $function_exists -eq 0 ]
 111         then
 112                 $completion_func
 113         elif [ $have_previous_element -ne 0 ] && [[ "$prev" == "!" ]]
 114         then
 115                 _gst_complete_compatible_elements
 116         elif [ $have_previous_element -ne 0 ]
 117         then
 118                 _gst_complete_element_properties
 119         else
 120                 _gst_complete_all_elements
 121         fi
 122 }
 123
 124 _gst_launch_func_wrap ()
 125 {
 126         local cur prev
 127         cur="${COMP_WORDS[COMP_CWORD]}"
 128         prev="${COMP_WORDS[COMP_CWORD-1]}"
 129         $1
 130 }
 131
 132 # Setup completion for certain functions defined above by setting common
 133 # variables and workarounds.
 134 # This is NOT a public function; use at your own risk.
 135 _gst_launch_complete ()
 136 {
 137         local wrapper="__launch_wrap${2}"
 138         eval "$wrapper () { _gst_launch_func_wrap $2 ; }"
 139         complete -o bashdefault -o default -o nospace -F $wrapper $1 2>/dev/null \
 140                 || complete -o default -o nospace -F $wrapper $1
 141 }
 142
 143 _gst_launch_complete gst-launch-1.0 _gst_launch_main