#!/bin/bash
#
# This script finds all symbolic links in the current directory, and creates
# a file named ".cvs-symlinks" listing them.
#
# Usage:  csym-add [-r|<directory>]
#


# Check for recursive usage 
#
[ "$1" = "-r" ] && \
	exec find . -type d -exec $0 \{\} \;   # Slow, simple & should work!


# Check for directory parameter
#
if [ "$1" != "" ]; then
	[ -d "$1" ] || \
	{
		echo
		echo "Usage: $0 [-r|<directory>]"
		echo
		echo "Note that the directory must already be in CVS."
		echo
		exit 1
	}
	[ -d "$1/CVS" ] && cd "$1" && pwd || exit 0
fi


# Make the script handle variations in the format of "ls -l"
#
LEN=$(ls -lad . | wc -c |awk '{print $1}')
let LEN=$LEN-1


# Generate link list.
#
ls -Al | grep -e ^l | cut -b$LEN- > .cvs-symlinks-tmp || \
{
	echo 'csym-add:  Failed to create .cvs-symlinks-tmp!'
	exit 1
}


# Nothing to see here?
#
[ -e .cvs-symlinks -o -s .cvs-symlinks-tmp ] || \
{
	rm -f .cvs-symlinks-tmp
	exit 0
}


# Add to CVS tree if necessary
#
[ $(grep -c -e ^/.cvs-symlinks/ CVS/Entries) != 1 ] && \
{
	touch .cvs-symlinks 

	[ -f .cvs-symlinks ] || \
	{
		echo 'csym-add:  .cvs-symlinks is not a file!'
		exit 1
	}
	
	cvs add .cvs-symlinks || \
	{
		echo 'csym-add:  Failed to add .cvs-symlinks to CVS tree!'
		exit 1
	}
}

# Anything to do?
#
[ -f .cvs-symlinks ] || exit 0


# Update!
#
rm -f .cvs-symlinks 					&& \
mv .cvs-symlinks-tmp .cvs-symlinks 		&& \
cvs commit -m "updated" .cvs-symlinks	&& \
exit 0
	

# :-(
#
echo 'csym-add:  Failed to update and commit .cvs-symlinks, oh dear!'
exit 1