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|
#!/bin/sh
#
# Copyright (c) 2014 Bryan Drewery <bdrewery@FreeBSD.org>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
display_setup() {
[ $# -ge 1 ] || eargs display_setup format [column_sort]
_DISPLAY_DATA=
_DISPLAY_FORMAT="$1"
_DISPLAY_COLUMN_SORT="${3-}"
}
display_add() {
local arg
# Add in newline
[ -n "${_DISPLAY_DATA}" ] && \
_DISPLAY_DATA="${_DISPLAY_DATA}
"
# Quote all arguments
for arg do
_DISPLAY_DATA="${_DISPLAY_DATA} '${arg}'"
done
return 0
}
display_output() {
local cnt lengths length format arg flag quiet line n
local header header_format
local OPTIND=1
quiet=0
while getopts "q" flag; do
case "${flag}" in
q)
quiet=1
;;
*)
err 1 "display_output: Invalid flag"
;;
esac
done
shift $((OPTIND-1))
format="${_DISPLAY_FORMAT}"
# Determine optimal format
n=0
while mapfile_read_loop_redir line; do
n=$((n + 1))
if [ "${n}" -eq 1 ]; then
if [ "${quiet}" -eq 1 ]; then
continue
fi
header="${line}"
fi
eval "set -- ${line}"
cnt=0
for arg in "$@"; do
hash_get lengths ${cnt} max_length || max_length=0
stripansi "${arg}" arg
if [ ${#arg} -gt ${max_length} ]; then
# Keep the hash var local to this function
_hash_var_name "lengths" "${cnt}"
local ${_hash_var_name}
# Set actual value
hash_set lengths ${cnt} ${#arg}
fi
cnt=$((cnt + 1))
done
done <<-EOF
${_DISPLAY_DATA}
EOF
# Set format lengths if format is dynamic width
case "${format}" in
*%%*)
set -- ${format}
lengths=
n=0
for arg in "$@"; do
# Check if this is a format argument
case "${arg}" in
*%*) ;;
*) continue ;;
esac
case ${arg} in
*%d*)
hash_get lengths ${n} length
lengths="${lengths:+${lengths} }${length}"
;;
esac
n=$((n + 1))
done
format=$(printf "${format}" ${lengths})
;;
esac
# Show header separately so it is not sorted
if [ "${quiet}" -eq 0 ]; then
stripansi "${header}" header
stripansi "${format}" header_format
eval "set -- ${header}"
printf "${header_format}\n" "$@"
fi
# Sort as configured in display_setup()
echo "${_DISPLAY_DATA}" | tail -n +2 | \
sort ${_DISPLAY_COLUMN_SORT} | \
while mapfile_read_loop_redir line; do
eval "set -- ${line}"
printf "${format}\n" "$@"
done
unset _DISPLAY_DATA _DISPLAY_FORMAT \
_DISPLAY_COLUMN_SORT
}
|
