#!/bin/bash
#                 /usr/local/bin/tags
# http://crystalfaeries.net/posix/bin/tags
# celeste:crystalfaery 2014-07-24 22:18:02+00:00

# $0	is invoked by	    chronicle  as post-execution command

# We work FROM all VISIBLE source files in the input directory:
cd "$(grep '^input = ' /etc/chroniclerc | sed 's/^input = //')" || exit -1

# We output a couple invisible files into the same directory:
# the ALPHABETICAL file .tags.txt
# the _______COUNT file .tagcount.txt

####### do the heavy lifting #######

# Generate the basic tags list
grep Tags: * | sed 's/^.*: // ; s/^.*:	// ; s/,/\n/g ; s/	//g ; s/ //g' | sort -u | grep -v '^$' > /tmp/tags.$$.txt

# Iterate the tags to count their useage
mkdir -p	/tmp/tags.$$
for tag in `cat /tmp/tags.$$.txt`
do
	grep Tags: * | grep $tag > /tmp/tags.$$/$tag
done

# Generate the tags list with counts
pushd	/tmp/tags.$$ >& /dev/null	|| exit -1
	/usr/local/bin/wc -l *	> /tmp/tags.$$.txt 
popd >& /dev/null

####### now that the heavy lifting is done, fill out the paperwork #######

# Reset the ALPHABETICAL file to just the headers
echo "__Count TAG____"				 > .tags.txt
# Append the data to the preset headers
grep -v total	/tmp/tags.$$.txt		>> .tags.txt
echo "__Count TAG____"				>> .tags.txt
grep    total	/tmp/tags.$$.txt		>> .tags.txt

# Reset the COUNT file to just the headers
echo "__COUNT Tag____"				 > .tagcount.txt
# Append the data to the preset headers
grep -v total	/tmp/tags.$$.txt | sort -nr	>> .tagcount.txt
echo "__COUNT Tag____"				>> .tagcount.txt
grep    total	/tmp/tags.$$.txt | sort -nr	>> .tagcount.txt

# Clean-Up Temporary Space (in the background since it's on an independent partition)
rm -rf	/tmp/tags.$$	&
rm	/tmp/tags.$$.txt&
disown %1 %2
exit	$?
alert	# how did we get here?