#!/usr/bin/env sh
# VERSION: 0.6.0
# MIT License
# 
# Original work Copyright (c) 2011 Alexey Akimov (@subdir) and contributors
# This rewritten version Copyright (c) 2014-2017 Kirill Pavlov
# 
# 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.
tmp=$(mktemp)
cat > $tmp

COLUMNWIDTHS=$(awk -F'\t' '{for (i=1; i<=NF; i++) if (length($i) > l[i]) l[i] = length($i) } END{for (i=1; i<=NF; i++) printf "%s%s", l[i], i==NF ? "" : " "}' $tmp)

# replace string "1 2 3" to "%-1s | %-2s | %-3s", $1, $2, $3
PROG=$(echo $COLUMNWIDTHS | sed 's/ /s | %-/g; s/^/"%-/; s/$/s\\n"/')$(echo $COLUMNWIDTHS | awk 'BEGIN{RS=" "}{printf ", $%s", NR}')

awk -v COLUMNWIDTHS="${COLUMNWIDTHS}" -F"\t" "BEGIN{ split(COLUMNWIDTHS, CW, \" \") }{
    printf ${PROG%}
    
    if (NR == 1) {
        for (i=1; i<=NF; i++) {
            # String multiplication in awk: https://stackoverflow.com/questions/37295695/how-to-use-printf-to-print-a-character-multiple-times#answer-37297195
            s = sprintf(\"%*s\", CW[i], \"\");
            gsub(/ /, \"-\" ,s);
            printf \"%s%s\", s, i==NF ? ORS : \"-|-\"
        }
    }
}" $tmp

rm -f $tmp
