#!/bin/sh
#
# greps and reformats shielding values from multiple logs

ecuts="19 20 21 22 23 24 25 26 27"

# check for given tag
if [ -z "$2" ]; then
	echo "Usage: $0 <tag> <#row>"
	echo "	<tag> gives the prefix of the logs up to the cut values, e.g. tms_tm_1-25_25Ht.1.e127 then tag is \"tms_tm_1-25\""
	echo "	<#row> gives the number of rows on the final output"
	exit 1
else
	tag=$1
	rows=$2
fi

# grep the stuff
array=(`for i in $ecuts; do echo ${i}; grep shielding\ \ : ${tag}_${i}Ht*e* | awk -F": " {'print $2'} | tr . ,; done`)

# now do the fancy stuff with the field delimiters, to reinterpret the array as a list of lines
old_IFS=$IFS
IFS='
'

# generate list for loop
count=${#array[@]}
echo total number of entries: $count
let cols="$count / $rows"
let current="$cols * $rows"
echo -n "Comparing $current to $count: "
if [ "$current" -lt "$count" ]; then
	let cols=$cols+1
	echo " increasing by one."
else
	echo "fine."
fi
echo "total number of columns and rows: ($cols, $rows)"

# and finally print out in rearranged way
j=0
while [ "$j" -lt "$rows" ]; do
	i=0
	while [ "$i" -lt "$cols" ]; do
		let current="$i * $rows + $j"
		if [ "$current" -lt "$count" ]; then
			echo -e -n "${array[$current]}\t"
		fi
		let i=$i+1
	done
	echo -e -n "\n"
	let j=$j+1
done


IFS=$old_IFS
exit 0