// str.js

function ac_str_trim(str) {
    return str.replace(/^\s*(\S+)\s*$/, "$1");
}

function ac_str_array(str) {
    var ary = new Array();

    for (var i = 0; i < str.length; i++) {
        if (str[i] == '&') {
            var tmp = "";
            while (i < str.length) {
                tmp += str[i++];
                if (str[i-1] == ';')
                    break;
            }

            ary.push(tmp);
        } else {
            ary.push(str[i]);
        }
    }

    return ary;
}

function ac_array_has(ary, val) {
    for (var i = 0; i < ary.length; i++) {
        if (ary[i] == val)
            return true;
    }

    return false;
}

function ac_array_extract(str) {
    var ary = new Array();
    var tmp = str.split("||");

    for (var i = 0; i < tmp.length; i++) {
        var ent = tmp[i].split("=", 2);
        ary[ent[0]] = ent[1];
    }

    return ary;
}

function ac_str_array_len(ary) {
    for (var i = 0, c = 0; i < ary.length; i++)
        c += ary[i].length;
    return c;
}

function ac_str_array_substr(ary, off, len) {
    var tmp = "";
    for (var i = off; i < ary.length; i++) {
        if (i >= len)
            break;
        tmp += ary[i];
    }

    return tmp;
}

function ac_str_url(rel) {
    var ary = rel.split("/");
    var url = window.location.href.replace(/\/[^\/]*$/, "");

    for (var i = 0; i < ary.length; i++) {
        if (ary[i] == "..")
            url = url.replace(/\/[^\/]*$/, "");
        else
            url += "/" + ary[i];
    }

    return url;
}

function ac_ary_last(ary, begin) {
    var nary = new Array();

    for (var i = begin, j = 0; i < ary.length; i++, j++) {
        nary[j] = ary[i];
    }

    return nary;
}

function ac_str_rand_password(len) {
	var out = "";

	while (len--) {
		out += ac_str_rand_passchar();
	}

	return out;
}

function ac_str_rand_passchar() {
	var floor = Math.floor(Math.random() * 10.0);
	var chr;

	if (floor > 6) {
		chr = Math.floor(Math.random() * 10.0);
		chr = chr.toString();
	} else {
		var off = Math.floor(Math.random() * 100.0) % 26;
		chr = "a".charCodeAt(0) + off;
		chr = String.fromCharCode(chr);
	}

	return chr;
}

function ac_sprintf(fmt, args) {
    var out;
    var argi;

    out     = "";
    argi    = 0;

    for (var i = 0; i < fmt.length; i++) {
        var fmtc = fmt.charAt(i);
        switch (fmtc) {
            case "\\":
                i++;
                break;
            case "%":
                if (argi < args.length) {
                    fmtc = fmt.charAt(i+1);
                    out += ac_sprintf_spec(fmtc, args[argi]);
                    i++;
                    argi++;
                } else {
                    out += fmtc;
                }
                break;
            default:
                out += fmtc;
                break;
        }
    }

    return out;
}

function ac_sprintf_spec(ch, arg) {
    switch (ch) {
        case "d":
        case "f":
            return arg.toString();
        case "s":
        default:
            return arg;
    }

    return "";
}


// This code is in the public domain. Feel free to link back to http://jan.moesen.nu/
function sprintf() {
	if (!arguments || arguments.length < 1 || !RegExp)
	{
		return;
	}
	var str = arguments[0];
	var re = /([^%]*)%('.|0|\x20)?(-)?(\d+)?(\.\d+)?(%|b|c|d|u|f|o|s|x|X)(.*)/; // '
	var a = b = [], numSubstitutions = 0, numMatches = 0;
	while (a = re.exec(str))
	{
		var leftpart = a[1], pPad = a[2], pJustify = a[3], pMinLength = a[4];
		var pPrecision = a[5], pType = a[6], rightPart = a[7];

		//alert(a + '\n' + [a[0], leftpart, pPad, pJustify, pMinLength, pPrecision);

		numMatches++;
		if (pType == '%')
		{
			subst = '%';
		}
		else
		{
			numSubstitutions++;
			if (numSubstitutions >= arguments.length)
			{
				alert('Error! Not enough function arguments (' + (arguments.length - 1) + ', excluding the string)\nfor the number of substitution parameters in string (' + numSubstitutions + ' so far).');
			}
			var param = arguments[numSubstitutions];
			var pad = '';
			       if (pPad && pPad.substr(0,1) == "'") pad = leftpart.substr(1,1);
			  else if (pPad) pad = pPad;
			var justifyRight = true;
			       if (pJustify && pJustify === "-") justifyRight = false;
			var minLength = -1;
			       if (pMinLength) minLength = parseInt(pMinLength);
			var precision = -1;
			       if (pPrecision && pType == 'f') precision = parseInt(pPrecision.substring(1));
			var subst = param;
			       if (pType == 'b') subst = parseInt(param).toString(2);
			  else if (pType == 'c') subst = String.fromCharCode(parseInt(param));
			  else if (pType == 'd') subst = parseInt(param) ? parseInt(param) : 0;
			  else if (pType == 'u') subst = Math.abs(param);
			  else if (pType == 'f') subst = (precision > -1) ? Math.round(parseFloat(param) * Math.pow(10, precision)) / Math.pow(10, precision): parseFloat(param);
			  else if (pType == 'o') subst = parseInt(param).toString(8);
			  else if (pType == 's') subst = param;
			  else if (pType == 'x') subst = ('' + parseInt(param).toString(16)).toLowerCase();
			  else if (pType == 'X') subst = ('' + parseInt(param).toString(16)).toUpperCase();
		}
		str = leftpart + subst + rightPart;
	}
	return str;
}