#!/bin/sh
#
#   Copyright (C) 2014 Masatake YAMATO
#
#   This program is free software; you can redistribute it and/or modify
#   it under the terms of the GNU General Public License as published by
#   the Free Software Foundation; either version 2 of the License, or
#   (at your option) any later version.
#
#   This program is distributed in the hope that it will be useful,
#   but WITHOUT ANY WARRANTY; without even the implied warranty of
#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#   GNU General Public License for more details.
#
#   You should have received a copy of the GNU General Public License
#   along with this program.  If not, see <http://www.gnu.org/licenses/>.
#
# ----------------------------------------------------------------------------------------
# Show the ratio of the number of files handled by ctags to the number of all files of ctags source directory.
# -----------------------------------------------------------------------------------------
: ${CTAGS_TEST:=./ctags}

#
# Report all unsupported files
#
VERBOSE=0

print_help()
{
    echo "Usage:"
    echo "	$0 -h|--help"
    echo "	$0 [-v|--verbose [-v|--verbose]]"
    exit $1
}

while [ $# -gt 0 ]; do
    case $1 in
	-h|--help)
	    print_help 0
	    ;;
	-v|--verbose)
	    VERBOSE=`expr $VERBOSE + 1`
	    ;;
	-*)
	    echo "unknown option: $1"
	    print_help 1
	    ;;
	*)
	    echo "unknown expected argument: $1"
	    print_help 1
	    ;;
    esac
    shift
done

CMDLINE="${CTAGS_TEST} --quiet --options=NONE -G --options=./.ctags --languages=all --options=misc/budge.ctags -R --print-language"
ALL_FILES=$(git ls-files)

TOTAL=0
HAS_PARSER=0
member()
{
    local input=$1
    local f
    for f in $ALL_FILES; do
	if [ "$f" = "$input" ]; then
	    return 0
	fi
    done
    return 1
}

INPUT=
LANG=
${CMDLINE} | { while IFS=': 	' read INPUT LANG; do
		   if member "$INPUT"; then
		       if [ "$LANG" != NONE ]; then
			   if [ "$VERBOSE" -gt 1 ]; then
			       printf "%-60s %s\n" $INPUT $LANG
			   fi
			   HAS_PARSER=$(( HAS_PARSER + 1 ))
		       else
			   if [ "${VERBOSE}" -gt 0 ]; then
			       printf "%-60s %s\n" $INPUT NONE
			   fi
		       fi
		       TOTAL=$(( TOTAL + 1 ))
		   fi
	       done
	       echo "[ctags|$(expr 100 '*' $HAS_PARSER  / $TOTAL)%]"
}
