srcfinder

#!/bin/sh
# Copyright (c) 2021 Charlie Burnett <burne251@umn.edu>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#
# Just a script for finding c/c++ source files for use with cscope

usage() {
    echo "usage: $(basename $0) [-sh] [-r root] [files/directories]"
    exit 1
}

EXT="\.C$|\.CC$|\.H$|\.HH$|\.c$|\.c\+\+$|\.cc$|\.cpp$"
EXT="${EXT}\|\.cxx$|\.h$|\.h\+\+$|\.hh$|\.hpp$|\.hxx$"
SHALLOW=0
optstring="hr:s"

while getopts ${optstring} arg;
do
    case ${arg} in
	h)
	    usage;
	    ;;
	r)
	    ROOTDIR="${OPTARG}";
	    shift;
	    ;;
	s)
	    SHALLOW=1;
	    shift;
	    ;;
	?)
    esac
done

shift $(expr $OPTIND - 1)

if [ $# -ne 0 ] ; then
    for var in "$@"
    do
	if [ $SHALLOW -eq 1 ] ; then
 	    ls -A1 "${var}" | grep -E "${EXT}"
	else
	    find "${var}" -type f | grep -E "${EXT}"
	fi
    done
else
    if [ $SHALLOW -eq 1 ] ; then
	ls -A1 | grep -E "${EXT}"
    else
	find . -type f | grep -E "${EXT}"
    fi
fi