diff options
Diffstat (limited to 'lesspipe.sh')
| -rw-r--r-- | lesspipe.sh | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/lesspipe.sh b/lesspipe.sh new file mode 100644 index 0000000..f2df6a1 --- /dev/null +++ b/lesspipe.sh @@ -0,0 +1,128 @@ +#!/bin/sh +# +# To use this filter with less, define LESSOPEN: +# export LESSOPEN="|/usr/bin/lesspipe.sh %s" +# +# The script should return zero if the output was valid and non-zero +# otherwise, so less could detect even a valid empty output +# (for example while uncompressing gzipped empty file). +# For backward-compatibility, this is not required by default. To turn +# this functionality there should be another vertical bar (|) straight +# after the first one in the LESSOPEN environment variable: +# export LESSOPEN="||/usr/bin/lesspipe.sh %s" + +if [ ! -e "$1" ] ; then + exit 1 +fi + +if [ -d "$1" ] ; then + ls -alF -- "$1" + exit $? +fi + +exec 2>/dev/null + +# Allow for user defined filters +if [ -x ~/.lessfilter ]; then + ~/.lessfilter "$1" + if [ $? -eq 0 ]; then + exit 0 + fi +fi + +manfilter () +{ + if test -x /usr/bin/man ; then + # See rhbz#1241543 for more info. Well, actually we firstly + # used 'man -l', then we switched to groff, and then we again + # switched back to 'man -l'. + /usr/bin/man -P /usr/bin/cat -l "$1" + elif test -x /usr/bin/groff; then + # This is from pre-rhbz#1241543-time. + groff -Tascii -mandoc "$1" | cat -s + else + echo "WARNING:" + echo "WARNING: to better show manual pages, install 'man-db' package" + echo "WARNING:" + cat "$1" + fi +} + +export MAN_KEEP_FORMATTING=1 + +case "$1" in +*.[1-9n].bz2|*.[1-9]x.bz2|*.man.bz2|*.[1-9n].[glx]z|*.[1-9]x.[glx]z|*.man.[glx]z|*.[1-9n].lzma|*.[1-9]x.lzma|*.man.lzma|*.[1-9n].zst|*.[1-9]x.zst|*.man.zst|*.[1-9n].br|*.[1-9]x.br|*.man.br) + case "$1" in + *.gz) DECOMPRESSOR="gzip -dc" ;; + *.bz2) DECOMPRESSOR="bzip2 -dc" ;; + *.lz) DECOMPRESSOR="lzip -dc" ;; + *.zst) DECOMPRESSOR="zstd -dcq" ;; + *.br) DECOMPRESSOR="brotli -dc" ;; + *.xz|*.lzma) DECOMPRESSOR="xz -dc" ;; + esac + if [ -n "$DECOMPRESSOR" ] && $DECOMPRESSOR -- "$1" | file - | grep -q troff; then + $DECOMPRESSOR -- "$1" | manfilter - + exit $? + fi ;;& +*.[1-9n]|*.[1-9]x|*.man) + if file "$1" | grep -q troff; then + manfilter "$1" + exit $? + fi ;;& +*.tar) tar tvvf "$1"; exit $? ;; +*.tgz|*.tar.gz|*.tar.[zZ]) tar tzvvf "$1"; exit $? ;; +*.tar.xz) tar Jtvvf "$1"; exit $? ;; +*.xz|*.lzma) xz -dc -- "$1"; exit $? ;; +*.tar.lz) tar --lzip -tvvf "$1"; exit $? ;; +*.lz) lzip -dc -- "$1"; exit $? ;; +*.tar.zst) tar --zstd -tvvf "$1"; exit $? ;; +*.zst) zstd -dcq -- "$1"; exit $? ;; +*.tar.br) brotli -dc -- "$1" | tar tvvf -; exit $? ;; +*.br) brotli -dc -- "$1"; exit $? ;; +*.tar.bz2|*.tbz2) bzip2 -dc -- "$1" | tar tvvf -; exit $? ;; +*.[zZ]|*.gz) gzip -dc -- "$1"; exit $? ;; +*.bz2) bzip2 -dc -- "$1"; exit $? ;; +*.zip|*.jar|*.nbm) zipinfo -- "$1"; exit $? ;; +# --nomanifest -> rhbz#1450277 +*.rpm) rpm -qpivl --changelog --nomanifest -- "$1"; exit $? ;; +*.cpi|*.cpio) cpio -itv < "$1"; exit $? ;; +*.gpg) + if [ -x /usr/bin/gpg2 ]; then + gpg2 -d "$1" + exit $? + elif [ -x /usr/bin/gpg ]; then + gpg -d "$1" + exit $? + else + echo "No GnuPG available." + echo "Install gnupg2 or gnupg to show encrypted files." + exit 1 + fi ;; +*.gif|*.jpeg|*.jpg|*.pcd|*.png|*.tga|*.tiff|*.tif) + if [ -x /usr/bin/identify ]; then + identify "$1" + exit $? + elif [ -x /usr/bin/gm ]; then + gm identify "$1" + exit $? + else + echo "No identify available" + echo "Install ImageMagick or GraphicsMagick to browse images" + exit 1 + fi ;; +*) + if [ -x /usr/bin/file ] && [ -x /usr/bin/iconv ] && [ -x /usr/bin/cut ]; then + case `file -b "$1"` in + *UTF-16*) conv='UTF-16' ;; + *UTF-32*) conv='UTF-32' ;; + esac + if [ -n "$conv" ]; then + env=`echo $LANG | cut -d. -f2` + if [ -n "$env" -a "$conv" != "$env" ]; then + iconv -f $conv -t $env "$1" + exit $? + fi + fi + fi + exit 1 +esac |