Most of us have an handy script for opening files and/or links given as arguments. This is, sometimes, one of our most used scripts. Use this thread to share your file-opener or link-opener scripts and steal ideas from others.
Here is mine, I call it xopen.
Code:
#!/bin/sh
# xopen: open file with proper command; use file in $MIMEFILE as rules file
# this file in public domain
usage() {
echo "usage: xopen [-c mimefile] filename" >&2
exit 1
}
# get mimetype of a file using the file(1) utility
getfilemime() {
file -ib "$@" | cut -d';' -f1
}
# get lowercase extension of a file
getextension() {
echo "${1##*.}" | tr '[:upper:]' '[:lower:]'
}
# get mimetype of a url
geturlmime() {
protocol=$(printf "%s" "$@" | sed 's/^\([a-zA-Z]\+\):.*/\1/')
case "$protocol" in
http|https)
echo text/html
;;
magnet)
echo application/x-bittorrent
;;
irc)
echo x-scheme-handler/irc
;;
esac
unset protocol
}
# get command to open file or url
getcmd() {
while read -r line
do
line=${line%%#*} # remove comments
[ -z "$line" ] && continue # ignore blank lines
pattern="$(echo $line | cut -s -d: -f1 | sed -E 's/[ ]*$//; s/\|/ /g')"
cmd="$(echo $line | cut -s -d: -f2 | sed -E 's/^[ ]*//')"
cmd="$(eval echo $cmd)"
# using case for matching patterns to avoid forking
for i in $pattern
do
case $1 in
$i) echo "$cmd" && return ;;
esac
done
done < "$MIMEFILE"
}
# execute command $1 to open file or url $2
xopen() {
trap "" 1 15
echo xopen: opening $search with $1 >&2
exec $1 "${2}" &
}
while getopts 'c:' c
do
case "$c" in
c)
MIMEFILE="$OPTARG"
;;
*)
usage
;;
esac
done
shift $((OPTIND -1))
[ "$#" -ne 1 ] && usage
# test whether MIMEFILE is not set
[ -z "$MIMEFILE" ] && echo 'xopen: $MIMEFILE is not set' >&2 && exit 1
# get mimetype and file extension
if [ -e "$@" ];
then # it's a file
mime=$(getfilemime "$@")
extension=$(getextension "$@")
else # it's a url
mime=$(geturlmime "$@")
fi
[ -z "$extension$mime" ] && echo "xopen: unknown file or url type" >&2 && exit 1
# get command to open file or url
cmd=$(getcmd "$extension") # try first to open by file extension
[ -z "$cmd" ] && cmd=$(getcmd "$mime") # then try to open by mimetype
[ -z "$cmd" ] && echo "xopen: cannot find an command to open $@ ($mime)" >&2 && exit 1
# open file or url with $cmd
xopen "$cmd" "$@"
It gets its configuration from a file specified in the environment variable $MIMEFILE (or after the -c option). Each line in this file is composed by a mimetype or a file extension followed by a colon, followed by the command that opens a file with that mimetype or extension. Here is my $MIMEFILE:
Code:
# web
text/html: palemoon
# text
text/*: $TERMCMD -e $EDITOR
application/x-empty: $TERMCMD -e $EDITOR
application/x-shellscript: $TERMCMD -e $EDITOR
inode/x-empty: $TERMCMD -e $EDITOR
inode/directory: $TERMCMD -e fm
# Docs
application/pdf: zathura
application/postscript: zathura
application/epub*: zathura
image/*djvu: zathura
# media
application/octet-stream: mpv
video/*: mpv
audio/*: mpv
# image
image/*: sxiv
# Man pages
0|1|2|3|4|5|6|7: $TERMCMD -e man
Now share yours!
