#!/bin/bash
if [[ $# < 1 ]]; then
    echo "Usage: $( basename $0 ) <pattern> [files/dirs]"
    exit 1
fi

function canexecute {
    EPATH=$(type -path $1)
    if [ -n "$EPATH" ] && [ -x "$EPATH" ]
    then
        return 0
    else
        return 1
    fi
}

function get_file_list {
    local fl
    fl=""
    for arg in $*; do
        if [[ -d $arg ]]; then
            dslash="${arg%/}/"
            sed_script="s/^/$( echo $dslash | sed 's/\//\\\//g' )/"
            fl="$fl $( svntr ls -R $dslash | grep '\.js$' | sed $sed_script )"
        elif [[ -f $arg ]]; then
            fl="$fl $arg"
        fi
    done
    fl=$( echo $fl | tr -s ' ' )
    file_list=$fl
}

pattern=$1
shift
if [[ $# < 1 && -n $TRTOP ]]; then
    get_file_list "$TRTOP/site/js2/"
elif [[ $# < 1 ]]; then
    file_list="."
else
    get_file_list "$*"
fi
if [[ -z $file_list || " " == $file_list ]]; then
    echo "No matching files"
    exit 0
fi

if [[ -z $ACK_CMD ]]; then
    if canexecute ack-grep; then
        export ACK_CMD=ack-grep
    elif canexecute ack; then
        export ACK_CMD=ack
    else
        echo "Can't find ack-grep or ack command - please set ACK_CMD"
        exit 1
    fi
fi

$ACK_CMD --js $pattern $file_list