fixed lf previewer
This commit is contained in:
Sebastian Moser
@@ -1,202 +1,65 @@
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#!/bin/bash
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# shellcheck disable=SC2222
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#!/bin/sh
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# File preview handler for lf.
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# Dependencies:
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# - GNU 'file' or similar (file detection)
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# - bat (text)
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# - uebergzug (images, videos, pdf, fonts)
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# - ffmpegthumbnailer (videos)
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# - exiftool (metadata/audio, and file detection for .webm files)
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# - jq (json and metadata)
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# - lynx (html/web pages)
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# - pdftoppm (pdf)
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# - odt2txt (odt)
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# - convert from imagemagick (fonts)
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# - atool (archives)
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# - gpg (PGP encrypted files)
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# - man (troff manuals)
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# - Other: stat, cut, sha256sum
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# Notes:
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# - If using alacritty's same process: 'alacritty msg create-window', previews only show in first window
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set -C -f
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IFS='
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'
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# Display an image with certain path, width, height, x, y
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# Usage: image "$path_to_image" "$width" "$height" "$x" "$y" "$fallback_path"
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image() {
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# shellcheck disable=all
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set +u
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set +e
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if [ -f "$1" ] && [ "$DISPLAY" ] && [ ! "$WAYLAND_DISPLAY" ]
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then
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printf '{"action": "add", "identifier": "PREVIEW", "path": "%s", "width": "%s", "height": "%s", "scaler": "contain", "x": "%s", "y": "%s"}\n' \
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"$1" "$(($2-1))" "$(($3-1))" "$4" "$5" > "$FIFO_UEBERZUG"
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else
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exiftool -j "$6" | jq -C
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fi
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FILE_PATH="$1"
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X=$4
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Y=$5
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MW=$(($2 - 1))
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MH=$3
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ueberzug cmd -s "$UB_SOCKET" -a add -i PREVIEW -x "$X" -y "$Y" --max-width "$MW" --max-height "$MH" -f "$FILE_PATH"
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exit 1
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}
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ifub() {
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# shellcheck disable=all
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if [ "$DISPLAY" ] && [ -z "$WAYLAND_DISPLAY" ]; then
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command -V ueberzug >/dev/null 2>&1
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fi
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batorcat() {
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file="$1"
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shift
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if command -v bat >/dev/null 2>&1; then
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bat --color=always --style=plain --pager=never "$file" "$@"
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else
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cat "$file"
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fi
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}
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# Note that the cache file name is a function of file information, meaning if
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# an image appears in multiple places across the machine, it will not have to
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# be regenerated once seen.
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CACHE="$HOME/.cache/lf/thumbnail.$(stat --printf '%n\0%i\0%F\0%s\0%W\0%Y' -- "$(readlink -f "$1")" | sha256sum | awk '{print $1}'))"
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create_cache() {
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# shellcheck disable=all
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CACHE="${XDG_CACHE_HOME:-"$HOME/.cache"}/lf/thumb.$(stat --printf '%n\0%i\0%F\0%s\0%W\0%Y' \
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-- "$(readlink -f "$1" || realpath "$1" )" \
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| sha256sum \
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| cut -d' ' -f1)"
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}
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mime_preview() {
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# shellcheck disable=all
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# The 'ran_guard' variable is there in case I need to do recursion
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# because the initial mime_type variable wasn't enough to determine
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# an adequate preview
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case "$mime_type","$ran_guard" in
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(image/svg+xml,0 | image/svg)
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create_cache "$1"
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[ -f "$CACHE.png" ] \
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|| rsvg-convert -o "$CACHE.png" -a -w "1000" -b '#1f2430' "$1"
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image "$CACHE.png" "$2" "$3" "$4" "$5" "$1"
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;;
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(image/*,0)
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image "$1" "$2" "$3" "$4" "$5" "$1"
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;;
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(text/html,0)
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lynx -width="$4" -display_charset=utf-8 -dump -- "$1"
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;;
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(text/troff,0)
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case "${1##*.}" in
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([0-9] | [01]p | [23]*)
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man ./ "$1" | col -b
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;;
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(*)
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bat --terminal-width "$(($4*7/9))" -f "$1" --style=numbers
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esac
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;;
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(text/*,0 | */xml,0 | application/javascript,0 | application/x-subrip,0 )
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bat --terminal-width "$(($4*7/9))" -f "$1" --style=numbers
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;;
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( application/x-pie-executable,0 | application/x-executable,0 | \
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application/x-sharedlib,0)
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objdump -d "$1" -M intel
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#readelf -WCa "$1"
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#hexdump -C "$1" || xxd "$1"
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;;
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(application/json,0)
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case "${1##*.}" in
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(ipynb)
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# Needs my fork of ipynb-py-convert
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ipynb-py-convert --stdout "$1" \
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| bat --terminal-width "$(($4*7/9))" --color=always -l python --style=numbers
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;;
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(*) jq -C < "$1" ;;
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esac
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;;
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(application/zip,0 | application/x-7z-compressed,0 )
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atool --list -- "$1"
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;;
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(audio/*,[01])
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exiftool -j "$1" | jq -C
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;;
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(video/webm,0)
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# file --mime-type doesn't distinguish well between "video/webm"
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# actual webm videos or webm audios, but exiftool does, thus
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# re-run this function with new mimetype
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mime_type="$(exiftool -s3 -MIMEType "$1")" \
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ran_guard=$((ran_guard+1))
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mime_preview "$@"
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;;
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(video/*,[01])
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create_cache "$1"
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[ -f "$CACHE" ] \
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|| ffmpegthumbnailer -i "$1" -o "$CACHE" -s 0
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image "$CACHE" "$2" "$3" "$4" "$5" "$1"
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;;
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(*/pdf,0 | */postscript,0) # .pdf, .ps
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create_cache "$1"
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[ -f "$CACHE.jpg" ] \
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|| pdftoppm -jpeg -f 1 -singlefile "$1" "$CACHE"
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image "$CACHE.jpg" "$2" "$3" "$4" "$5" "$1"
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;;
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(application/font*,0 | application/*opentype,0 | font/sfnt,0) # .ttf, .otf
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create_cache "$1"
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[ -f "$CACHE.png" ] \
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|| convert -size "800x800" "xc:#000000" -fill "#ffffff" \
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-pointsize "72" -font "$1" -gravity center -annotate +0+0 \
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"ABCDEFGHIJKLM\nNOPQRSTUVWXYZ\nabcdefghijklm\nnopqrstuvwxyz\n1234567890\n!@#$\%^&*,.;:\n_-=+'\"|\\(){}[]" \
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"$CACHE.png"
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image "$CACHE.png" "$2" "$3" "$4" "$5" "$1"
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;;
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(*opendocument*,0) # .odt, .ods
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CCt=' ' \
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bytes=$(du -sb "$1") bytes="${bytes%%"$CCt"*}"
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if [ "$bytes" -lt 150000 ]; then
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odt2txt "$1"
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else
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printf "file too big too preview quickly\n"
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fi
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;;
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(*ms-excel,0) # .xls
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xls2csv -- "$1" \
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| bat --terminal-width "$(($4*7/9))" --color=always -l csv --style=numbers
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;;
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#(application/vnd.openxmlformats-officedocument.spreadsheetml.sheet) # .xslx
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# https://github.com/dilshod/xlsx2csv
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#xlsx2csv -- "$1"
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#;;
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#(text/rtf,0 | *msword,0 ) # .doc, doesn't always work
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#catdoc -- "$1"
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#;;
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#(*wordprocessingml.document|*/epub+zip|*/x-fictionbook+xml) # .docx
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#pandoc -s -t markdown -- "$1"
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#;;
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#(message/rfc822)
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# https://github.com/djcb/mu
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#mu view -- "${FILE_PATH}" && exit 5
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#;;
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# TODO: add lf command to decrypt it and show the decrypted file in preview window
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(application/pgp-encrypted,0)
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printf "PGP armored ASCII \033[1;31mencrypted\033[m file,\ntry using gpg to decrypt it\n\n"
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cat "$1"
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#gpg -d -- "$1"
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;;
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(application/octet-stream,0)
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#extension="${1##*.}" extension="${extension%"$1"}"
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case "${1##*.}" in
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(gpg)
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printf "OpenPGP \033[1;31mencrypted\033[m file,\ntry using gpg to decrypt it\n\n"
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;;
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(*) exiftool -j "$1" | jq -C
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esac
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;;
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(application/vnd.sqlite3,0)
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# TODO: handle multiple tables, maybe it's better to show tables and columns in a tree format
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table=$(sqlite3 "$1" '.tables')
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sqlite3 "$1" ".headers on" ".mode markdown" "select * from $table"
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;;
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esac
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return 1
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}
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main() {
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# shellcheck disable=all
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mime_type="$(file --dereference -b --mime-type -- "$1")"
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"echo hiiiiiiiiiiiiiiiiii $mime_type"
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ran_guard=0
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mime_preview "$@" || return $?
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}
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main "$@" || exit $?
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case "$(printf "%s\n" "$(readlink -f "$1")" | tr '[:upper:]' '[:lower:]')" in
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*.tgz | *.tar.gz) tar tzf "$1" ;;
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*.tar.bz2 | *.tbz2) tar tjf "$1" ;;
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*.tar.txz | *.txz) xz --list "$1" ;;
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*.tar) tar tf "$1" ;;
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*.zip | *.jar | *.war | *.ear | *.oxt) unzip -l "$1" ;;
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*.rar) unrar l "$1" ;;
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*.7z) 7z l "$1" ;;
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*.[1-8]) man "$1" | col -b ;;
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*.o) nm "$1" ;;
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*.torrent) transmission-show "$1" ;;
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*.iso) iso-info --no-header -l "$1" ;;
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*.odt | *.ods | *.odp | *.sxw) odt2txt "$1" ;;
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*.doc) catdoc "$1" ;;
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*.docx) docx2txt "$1" - ;;
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*.xls | *.xlsx)
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ssconvert --export-type=Gnumeric_stf:stf_csv "$1" "fd://1" | batorcat --language=csv
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;;
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*.wav | *.mp3 | *.flac | *.m4a | *.wma | *.ape | *.ac3 | *.og[agx] | *.spx | *.opus | *.as[fx] | *.mka)
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exiftool "$1"
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;;
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*.pdf)
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[ ! -f "${CACHE}.jpg" ] && pdftoppm -jpeg -f 1 -singlefile "$1" "$CACHE"
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image "${CACHE}.jpg" "$2" "$3" "$4" "$5"
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;;
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*.avi | *.mp4 | *.wmv | *.dat | *.3gp | *.ogv | *.mkv | *.mpg | *.mpeg | *.vob | *.fl[icv] | *.m2v | *.mov | *.webm | *.ts | *.mts | *.m4v | *.r[am] | *.qt | *.divx)
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[ ! -f "${CACHE}.jpg" ] && ffmpegthumbnailer -i "$1" -o "${CACHE}.jpg" -s 0 -q 5
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image "${CACHE}.jpg" "$2" "$3" "$4" "$5"
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;;
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*.bmp | *.jpg | *.jpeg | *.png | *.xpm | *.webp | *.gif | *.jfif)
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image "$1" "$2" "$3" "$4" "$5"
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;;
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*.svg)
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[ ! -f "${CACHE}.jpg" ] && convert "$1" "${CACHE}.jpg"
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image "${CACHE}.jpg" "$2" "$3" "$4" "$5"
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;;
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*)
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batorcat "$1"
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;;
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esac
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exit 0
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