diff --git a/plugins/preview-tui b/plugins/preview-tui index 5e1fd674..b156cacf 100755 --- a/plugins/preview-tui +++ b/plugins/preview-tui @@ -4,7 +4,7 @@ # # Note: This plugin needs a "NNN_FIFO" to work. # -# Dependencies: tmux (>=3.0) or xterm (or set $TERMINAL), file, tree +# Dependencies: tmux (>=3.0) or xterm or $TERMINAL, less or $PAGER, file, tree # # Usage: # You need to set a NNN_FIFO path and set a key for the plugin, @@ -22,24 +22,38 @@ # Authors: Todd Yamakawa, Léo Villeveygoux TERMINAL="${TERMINAL:-xterm}" +PAGER="${PAGER:-less}" preview_file () { + kill %- %+ 2>/dev/null clear - lines=$(($(tput lines)-1)) - cols=$(tput cols) + + # prevent shell pipe reuse + tmpfifopath="${TMPDIR:-/tmp}/nnn-preview-tui-fifo.$$" + mkfifo "$tmpfifopath" || return + encoding="$(file -b --mime-encoding "$1")" - if [ -d "$1" ]; then - # Print directory tree - cd "$1" && tree | head -n $lines | cut -c 1-"$cols" - elif [ "$encoding" = "binary" ] ; then - # Binary file: just print filetype info - echo "-------- Binary file --------" - file -b "$1" - else - # Text file: print file head - head -n $lines "$1" | cut -c 1-"$cols" - fi + $PAGER < "$tmpfifopath" & + + ( + exec > "$tmpfifopath" + + if [ -d "$1" ]; then + # Print directory tree + cd "$1" && tree + elif [ "$encoding" = "binary" ] ; then + # Binary file: just print filetype info + echo "-------- Binary file --------" + file -b "$1" + else + # Text file: + cat "$1" + fi & + + ) + + rm "$tmpfifopath" } if [ "$PREVIEW_MODE" ] ; then