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|
# SPDX-FileCopyrightText: 2025 Dennis Fink <me+coding@dennisfink.me>
#
# SPDX-License-Identifier: BSD-3-Clause
# bash completion for transcode.sh
# Install to:
# /etc/bash_completion.d/transcode.sh
# or source manually:
# source transcode.sh.bash-completion.sh
#
# Each option that takes an argument is supported in all three forms:
# short -f list.txt
# long space --encode-file list.txt
# long equals --encode-file=list.txt
_transcode_sh() {
local cur prev
_init_completion -n = || return
local -r preset_dir="${XDG_CONFIG_HOME:-$HOME/.config}/transcode.sh/presets"
# ---------------------------------------------------------------------------
# Helper: collect preset names from the preset directory
# ---------------------------------------------------------------------------
_transcode_presets() {
local presets=()
if [[ -d "$preset_dir" ]]; then
local f
while IFS= read -r f; do
f="${f##*/}" # basename
f="${f%.sh}" # strip .sh extension
presets+=("$f")
done < <(find "$preset_dir" -maxdepth 1 -name '*.sh' -type f 2>/dev/null)
fi
printf '%s\n' "${presets[@]}"
}
local codecs='h264 hevc av1 vp8 vp9 mpeg2video mpeg4 mjpeg theora'
local nice_vals='0 5 10 15 19'
local hwaccel_methods='auto cuda vaapi dxva2 d3d11va videotoolbox qsv'
local ffmpeg_loglevels='quiet panic fatal error warning info verbose debug trace'
local video_streams='v:0 v:1 v:2 v:3'
# ---------------------------------------------------------------------------
# Handle --option=VALUE: cur contains the entire "--opt=val" token.
# Strip the "opt=" prefix and delegate to the appropriate completer.
# This must be checked before the $prev dispatch below.
# ---------------------------------------------------------------------------
case "$cur" in
--config-file=*)
cur="${cur#*=}"
_filedir
return
;;
--backup-dir=*)
cur="${cur#*=}"
_filedir -d
return
;;
--encode-file=*)
cur="${cur#*=}"
_filedir
return
;;
--size-report-file=*)
cur="${cur#*=}"
_filedir
return
;;
--nice=*)
cur="${cur#*=}"
COMPREPLY=($(compgen -W "$nice_vals" -- "$cur"))
return
;;
--skip-codec=*)
cur="${cur#*=}"
COMPREPLY=($(compgen -W "$codecs" -- "$cur"))
return
;;
--preset=*)
cur="${cur#*=}"
COMPREPLY=($(compgen -W "$(_transcode_presets)" -- "$cur"))
return
;;
--hwaccel=*)
cur="${cur#*=}"
COMPREPLY=($(compgen -W "$hwaccel_methods" -- "$cur"))
return
;;
--ffmpeg-loglevel=*)
cur="${cur#*=}"
COMPREPLY=($(compgen -W "$ffmpeg_loglevels" -- "$cur"))
return
;;
--video-stream=*)
cur="${cur#*=}"
COMPREPLY=($(compgen -W "$video_streams" -- "$cur"))
return
;;
esac
# ---------------------------------------------------------------------------
# Handle VALUE after short form (-f, -N, -S, -p) and
# long space form (--encode-file, --nice, --size-report-file, --skip-codec, --preset).
# $prev is the option word, $cur is the value being typed.
# ---------------------------------------------------------------------------
case "$prev" in
--config-file)
_filedir
return
;;
--backup-dir)
_filedir -d
return
;;
-f | --encode-file)
_filedir
return
;;
-N | --nice)
COMPREPLY=($(compgen -W "$nice_vals" -- "$cur"))
return
;;
--size-report-file)
_filedir
return
;;
-S | --skip-codec)
COMPREPLY=($(compgen -W "$codecs" -- "$cur"))
return
;;
-p | --preset)
COMPREPLY=($(compgen -W "$(_transcode_presets)" -- "$cur"))
return
;;
--hwaccel)
COMPREPLY=($(compgen -W "$hwaccel_methods" -- "$cur"))
return
;;
--ffmpeg-loglevel)
COMPREPLY=($(compgen -W "$ffmpeg_loglevels" -- "$cur"))
return
;;
--video-stream)
COMPREPLY=($(compgen -W "$video_streams" -- "$cur"))
return
;;
esac
# ---------------------------------------------------------------------------
# Complete option names themselves.
# For options that accept an argument we list both the bare long form
# (--nice) and the equals form (--nice=) so the user can choose their
# preferred style. compopt -o nospace is applied when the sole match
# ends with '=' to avoid an unwanted trailing space in that case.
# ---------------------------------------------------------------------------
case "$cur" in
--*)
local longopts='
--backup-dir
--backup-dir=
--color
--config-file
--config-file=
--continue
--dry-run
--encode-file
--encode-file=
--ffmpeg-loglevel
--ffmpeg-loglevel=
--help
--hwaccel
--hwaccel=
--list-presets
--nice
--nice=
--no-color
--no-continue
--no-hwaccel
--no-only-if-smaller
--no-size-report
--no-verify-output
--only-if-smaller
--preset
--preset=
--quiet
--size-report
--size-report-file
--size-report-file=
--skip-codec
--skip-codec-override
--skip-codec=
--verbose
--verify-output
--version
--video-stream
--video-stream=
'
COMPREPLY=($(compgen -W "$longopts" -- "$cur"))
# Suppress the trailing space when the only completion ends with '='
[[ ${#COMPREPLY[@]} -eq 1 && "${COMPREPLY[0]}" == *= ]] &&
compopt -o nospace
return
;;
-*)
local shortopts='-c -f -n -N -s -S -l -p -h -? -q -v --'
COMPREPLY=($(compgen -W "$shortopts" -- "$cur"))
return
;;
esac
# ---------------------------------------------------------------------------
# Default: complete positional FILE arguments with common media extensions
# ---------------------------------------------------------------------------
_filedir '@(mkv|mp4|mov|avi|webm|flv|wmv|m4v|ts|mts|m2ts|mpg|mpeg|ogv|3gp|rm|rmvb)'
}
complete -F _transcode_sh transcode.sh
complete -F _transcode_sh transcode
|
