#!/bin/bash
# list srcs as BUILD file format, except test files.

shopt -s nullglob

first=1

function output ()
{
    local src_pattern='\w+\.(c|cc|cpp)$'
    local test_pattern='[-_](unit)?test\.c*'
    # all sources except tests
    if [[ $1 =~ $src_pattern && \
        ! $1 =~ $test_pattern ]]; then
        if [ $first -eq 0 ]; then
            echo -en ",\n"
        else
            first=0
        fi
        echo -n "        '$1'"
    fi
}

function handle_dir ()
{
    local dir
    dir=$1
    if [ ! -z "$dir" ]; then
        if [ "$dir" = '.' ]; then
            dir=
        elif ! [[ "$dir" =~ /$ ]]; then
            dir=$dir/
        fi
    fi
    for src in $dir*.{c,cc,cpp,cxx}; do
        output $src
    done
}

function handle_entry ()
{
    for entry in $@; do
        if [ -d $entry ]; then
            handle_dir $entry
        else
            output $entry
        fi
    done
}

echo -e '    srcs = ['

if [ $# -eq 0 ]; then
    handle_entry *.*
else
    handle_entry $@
fi

echo -e '\n    ]'