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preview-tui: make debugging easier

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i've noticed that there's a non-trival amount of issues user face
related to preview-tui. allowing all the null redirection to be easily
switched on/off can make debugging much easier, both for the users and
for us.
This commit is contained in:
NRK 2021-12-24 06:39:21 +06:00
parent cb410e25d8
commit c3534bd7e0
1 changed files with 17 additions and 10 deletions
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27
plugins/preview-tui
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@ -78,6 +78,7 @@
#SPLIT="$SPLIT" # you can set a permanent split here #SPLIT="$SPLIT" # you can set a permanent split here
#TERMINAL="$TERMINAL" # same goes for the terminal #TERMINAL="$TERMINAL" # same goes for the terminal
DEBUG_LOG=0 # set to 1 to enable logging for debug purposes
USE_SCOPE="${USE_SCOPE:-0}" USE_SCOPE="${USE_SCOPE:-0}"
USE_PISTOL="${USE_PISTOL:-0}" USE_PISTOL="${USE_PISTOL:-0}"
ICONLOOKUP="${ICONLOOKUP:-0}" ICONLOOKUP="${ICONLOOKUP:-0}"
@ -96,6 +97,12 @@ PREVIEWPID="$TMPDIR/nnn-preview-tui-pagerpid.$NNN_PARENT"
CURSEL="$TMPDIR/nnn-preview-tui-selection.$NNN_PARENT" CURSEL="$TMPDIR/nnn-preview-tui-selection.$NNN_PARENT"
FIFO_UEBERZUG="$TMPDIR/nnn-preview-tui-ueberzug-fifo.$NNN_PARENT" FIFO_UEBERZUG="$TMPDIR/nnn-preview-tui-ueberzug-fifo.$NNN_PARENT"
if [ "$DEBUG_LOG" -eq 0 ]; then
DEBUG_LOGFILE="/dev/null"
else
DEBUG_LOGFILE="${TMPDIR}/preview-tui-log"
fi
start_preview() { start_preview() {
[ "$PAGER" = "most" ] && PAGER="less -R" [ "$PAGER" = "most" ] && PAGER="less -R"
@ -176,7 +183,7 @@ EOF
FIFOPID="$FIFOPID" FIFO_UEBERZUG="$FIFO_UEBERZUG" $TERMINAL -e "$0" "$1" & FIFOPID="$FIFOPID" FIFO_UEBERZUG="$FIFO_UEBERZUG" $TERMINAL -e "$0" "$1" &
fi ;; fi ;;
esac esac
} >/dev/null 2>&1 } >"$DEBUG_LOGFILE" 2>&1
toggle_preview() { toggle_preview() {
if exists QuickLook.exe; then if exists QuickLook.exe; then
@ -195,7 +202,7 @@ toggle_preview() {
[ -p "$NNN_PPIPE" ] && printf "1" > "$NNN_PPIPE" [ -p "$NNN_PPIPE" ] && printf "1" > "$NNN_PPIPE"
start_preview "$1" "$QLPATH" start_preview "$1" "$QLPATH"
fi fi
} >/dev/null 2>&1 } >"$DEBUG_LOGFILE" 2>&1
exists() { exists() {
type "$1" >/dev/null type "$1" >/dev/null
@ -227,7 +234,7 @@ fifo_pager() {
) )
rm "$tmpfifopath" rm "$tmpfifopath"
} 2>/dev/null } 2>"$DEBUG_LOGFILE"
# Binary file: show file info inside the pager # Binary file: show file info inside the pager
print_bin_info() { print_bin_info() {
@ -237,7 +244,7 @@ print_bin_info() {
else else
file -b "$1" file -b "$1"
fi fi
} 2>/dev/null } 2>"$DEBUG_LOGFILE"
handle_mime() { handle_mime() {
case "$2" in case "$2" in
@ -343,7 +350,7 @@ preview_file() {
else else
handle_mime "$1" "$mimetype" "$ext" handle_mime "$1" "$mimetype" "$ext"
fi fi
} 2>/dev/null } 2>"$DEBUG_LOGFILE"
generate_preview() { generate_preview() {
if [ -n "$QLPATH" ] && stat "$3"; then if [ -n "$QLPATH" ] && stat "$3"; then
@ -387,13 +394,13 @@ generate_preview() {
pdf) pdftoppm -jpeg -f 1 -singlefile "$3" "$NNN_PREVIEWDIR/$3" ;; pdf) pdftoppm -jpeg -f 1 -singlefile "$3" "$NNN_PREVIEWDIR/$3" ;;
video) ffmpegthumbnailer -s0 -i "$3" -o "$NNN_PREVIEWDIR/$3.jpg" || rm "$NNN_PREVIEWDIR/$3.jpg" ;; video) ffmpegthumbnailer -s0 -i "$3" -o "$NNN_PREVIEWDIR/$3.jpg" || rm "$NNN_PREVIEWDIR/$3.jpg" ;;
esac esac
fi >/dev/null fi >"$DEBUG_LOGFILE"
if [ -f "$NNN_PREVIEWDIR/$3.jpg" ]; then if [ -f "$NNN_PREVIEWDIR/$3.jpg" ]; then
image_preview "$1" "$2" "$NNN_PREVIEWDIR/$3.jpg" image_preview "$1" "$2" "$NNN_PREVIEWDIR/$3.jpg"
else else
fifo_pager print_bin_info "$3" fifo_pager print_bin_info "$3"
fi fi
} 2>/dev/null } 2>"$DEBUG_LOGFILE"
image_preview() { image_preview() {
clear clear
@ -410,7 +417,7 @@ image_preview() {
fifo_pager print_bin_info "$3" && return fifo_pager print_bin_info "$3" && return
fi fi
printf "%s" "$!" > "$PREVIEWPID" printf "%s" "$!" > "$PREVIEWPID"
} 2>/dev/null } 2>"$DEBUG_LOGFILE"
ueberzug_layer() { ueberzug_layer() {
printf '{"action": "add", "identifier": "nnn_ueberzug", "x": 0, "y": 0, "width": "%d", "height": "%d", "scaler": "fit_contain", "path": "%s"}\n' "$1" "$2" "$3" > "$FIFO_UEBERZUG" printf '{"action": "add", "identifier": "nnn_ueberzug", "x": 0, "y": 0, "width": "%d", "height": "%d", "scaler": "fit_contain", "path": "%s"}\n' "$1" "$2" "$3" > "$FIFO_UEBERZUG"
@ -428,7 +435,7 @@ winch_handler() {
tail --follow "$FIFO_UEBERZUG" | ueberzug layer --silent --parser json & tail --follow "$FIFO_UEBERZUG" | ueberzug layer --silent --parser json &
fi fi
preview_file "$(cat "$CURSEL")" preview_file "$(cat "$CURSEL")"
} 2>/dev/null } 2>"$DEBUG_LOGFILE"
preview_fifo() { preview_fifo() {
while read -r selection; do while read -r selection; do
@ -442,7 +449,7 @@ preview_fifo() {
done < "$NNN_FIFO" done < "$NNN_FIFO"
sleep 0.1 # make sure potential preview by winch_handler is killed sleep 0.1 # make sure potential preview by winch_handler is killed
pkill -P "$$" pkill -P "$$"
} 2>/dev/null } 2>"$DEBUG_LOGFILE"
if [ "$PREVIEW_MODE" ]; then if [ "$PREVIEW_MODE" ]; then
if [ "$TERMINAL" != "kitty" ] && exists ueberzug; then if [ "$TERMINAL" != "kitty" ] && exists ueberzug; then