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#!/bin/sh -u
#
# vcat -- Like "cat", but print filenames before file contents
#
# Copyright (c) 2018 Samuel Lidén Borell <samuel@kodafritt.se>
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
prefix="---- "
suffix=" ----"
newlines='\n'
print_help() {
cat <<EOF
usage: $0 [OPTIONS...] FILENAMES...
Prints the contents of the given files similar to "cat", but additionally
prints the filename of the file being printed first.
Options:
--help Show this help.
-l COUNT Newlines to print after each file. Default is 1
-p, --prefix=STRING Prefix string before filename. Default is "---- "
-s, --suffix=STRING Suffix string after filename. Default is " ----"
Note: Options must come before filenames. To print filenames starting
with a "-", delimit the options and filenames with --
EOF
}
process_opts=1
while [ $# != 0 ]; do
is_option=0
if [ $process_opts = 1 ]; then
is_option=1
case "$1" in
--) process_opts=0;;
--help) print_help; exit;;
--prefix=*) prefix="${1#--prefix=}";;
--suffix=*) suffix="${1#--suffix=}";;
-p) shift; prefix="$1";;
-s) shift; suffix="$1";;
-l)
shift;
count="$1"
newlines=''
while [ "$count" -gt 0 ]; do
newlines="$newlines\n"
count=$((count - 1))
done
;;
-*) echo "invalid option: $1"; exit 2;;
*)
is_option=0;;
esac
fi
if [ $is_option = 0 ]; then
printf "%s\n" "$prefix$1$suffix"
cat "$1"
printf "$newlines"
fi
shift
done
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