#!/bin/sh

## Format C using 'indent'. Alternative to indent: astyle, uncrustify.
if [ -z "$(command -v indent)" ]; then
    echo "Please install 'indent'."
    exit
fi

if [ "$1" = "-h" ]; then
    cat<<EOF
Usage: ${0##*/} [FILES|FOLDERS]

Format C source code using indent.
EOF
fi


_formatc_dir()
{
    find "$1" -type f \
	    -name "*.[ch]" \
        -print \
        -exec indent -i4 -ppi4 -bli0 -cli4 -nut {} \;

    ## Remove backup files.
    find "$1" -type f \( \
	    -name "*.[ch]~" -o \
	    -name "*.[ch]~[0-9]*~" \) \
        -delete
}

if [ $# -eq 0 ]; then
    echo "Working on current dir"
    _formatc_dir "$PWD"
    exit
fi

for i ; do
    if [ ! -e "$i" ]; then
        continue
    fi


    if [ -d "$i" ]; then
        _formatc_dir "$i"
    else
        indent -i4 -ppi4 -bli0 -cli4 -nut "$i"
        rm -f "$i~" "$i~[0-9]*~"
    fi
done