--- /dev/null
+(function(window) {
+ var re = {
+ not_string: /[^s]/,
+ number: /[dief]/,
+ text: /^[^\x25]+/,
+ modulo: /^\x25{2}/,
+ placeholder: /^\x25(?:([1-9]\d*)\$|\(([^\)]+)\))?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?([b-fiosuxX])/,
+ key: /^([a-z_][a-z_\d]*)/i,
+ key_access: /^\.([a-z_][a-z_\d]*)/i,
+ index_access: /^\[(\d+)\]/,
+ sign: /^[\+\-]/
+ }
+
+ function sprintf() {
+ var key = arguments[0], cache = sprintf.cache
+ if (!(cache[key] && cache.hasOwnProperty(key))) {
+ cache[key] = sprintf.parse(key)
+ }
+ return sprintf.format.call(null, cache[key], arguments)
+ }
+
+ sprintf.format = function(parse_tree, argv) {
+ var cursor = 1, tree_length = parse_tree.length, node_type = "", arg, output = [], i, k, match, pad, pad_character, pad_length, is_positive = true, sign = ""
+ for (i = 0; i < tree_length; i++) {
+ node_type = get_type(parse_tree[i])
+ if (node_type === "string") {
+ output[output.length] = parse_tree[i]
+ }
+ else if (node_type === "array") {
+ match = parse_tree[i] // convenience purposes only
+ if (match[2]) { // keyword argument
+ arg = argv[cursor]
+ for (k = 0; k < match[2].length; k++) {
+ if (!arg.hasOwnProperty(match[2][k])) {
+ throw new Error(sprintf("[sprintf] property '%s' does not exist", match[2][k]))
+ }
+ arg = arg[match[2][k]]
+ }
+ }
+ else if (match[1]) { // positional argument (explicit)
+ arg = argv[match[1]]
+ }
+ else { // positional argument (implicit)
+ arg = argv[cursor++]
+ }
+
+ if (get_type(arg) == "function") {
+ arg = arg()
+ }
+
+ if (re.not_string.test(match[8]) && (get_type(arg) != "number" && isNaN(arg))) {
+ throw new TypeError(sprintf("[sprintf] expecting number but found %s", get_type(arg)))
+ }
+
+ if (re.number.test(match[8])) {
+ is_positive = arg >= 0
+ }
+
+ switch (match[8]) {
+ case "b":
+ arg = arg.toString(2)
+ break
+ case "c":
+ arg = String.fromCharCode(arg)
+ break
+ case "d":
+ case "i":
+ arg = parseInt(arg, 10)
+ break
+ case "e":
+ arg = match[7] ? arg.toExponential(match[7]) : arg.toExponential()
+ break
+ case "f":
+ arg = match[7] ? parseFloat(arg).toFixed(match[7]) : parseFloat(arg)
+ break
+ case "o":
+ arg = arg.toString(8)
+ break
+ case "s":
+ arg = ((arg = String(arg)) && match[7] ? arg.substring(0, match[7]) : arg)
+ break
+ case "u":
+ arg = arg >>> 0
+ break
+ case "x":
+ arg = arg.toString(16)
+ break
+ case "X":
+ arg = arg.toString(16).toUpperCase()
+ break
+ }
+ if (re.number.test(match[8]) && (!is_positive || match[3])) {
+ sign = is_positive ? "+" : "-"
+ arg = arg.toString().replace(re.sign, "")
+ }
+ else {
+ sign = ""
+ }
+ pad_character = match[4] ? match[4] === "0" ? "0" : match[4].charAt(1) : " "
+ pad_length = match[6] - (sign + arg).length
+ pad = match[6] ? (pad_length > 0 ? str_repeat(pad_character, pad_length) : "") : ""
+ output[output.length] = match[5] ? sign + arg + pad : (pad_character === "0" ? sign + pad + arg : pad + sign + arg)
+ }
+ }
+ return output.join("")
+ }
+
+ sprintf.cache = {}
+
+ sprintf.parse = function(fmt) {
+ var _fmt = fmt, match = [], parse_tree = [], arg_names = 0
+ while (_fmt) {
+ if ((match = re.text.exec(_fmt)) !== null) {
+ parse_tree[parse_tree.length] = match[0]
+ }
+ else if ((match = re.modulo.exec(_fmt)) !== null) {
+ parse_tree[parse_tree.length] = "%"
+ }
+ else if ((match = re.placeholder.exec(_fmt)) !== null) {
+ if (match[2]) {
+ arg_names |= 1
+ var field_list = [], replacement_field = match[2], field_match = []
+ if ((field_match = re.key.exec(replacement_field)) !== null) {
+ field_list[field_list.length] = field_match[1]
+ while ((replacement_field = replacement_field.substring(field_match[0].length)) !== "") {
+ if ((field_match = re.key_access.exec(replacement_field)) !== null) {
+ field_list[field_list.length] = field_match[1]
+ }
+ else if ((field_match = re.index_access.exec(replacement_field)) !== null) {
+ field_list[field_list.length] = field_match[1]
+ }
+ else {
+ throw new SyntaxError("[sprintf] failed to parse named argument key")
+ }
+ }
+ }
+ else {
+ throw new SyntaxError("[sprintf] failed to parse named argument key")
+ }
+ match[2] = field_list
+ }
+ else {
+ arg_names |= 2
+ }
+ if (arg_names === 3) {
+ throw new Error("[sprintf] mixing positional and named placeholders is not (yet) supported")
+ }
+ parse_tree[parse_tree.length] = match
+ }
+ else {
+ throw new SyntaxError("[sprintf] unexpected placeholder")
+ }
+ _fmt = _fmt.substring(match[0].length)
+ }
+ return parse_tree
+ }
+
+ var vsprintf = function(fmt, argv, _argv) {
+ _argv = (argv || []).slice(0)
+ _argv.splice(0, 0, fmt)
+ return sprintf.apply(null, _argv)
+ }
+
+ /**
+ * helpers
+ */
+ function get_type(variable) {
+ return Object.prototype.toString.call(variable).slice(8, -1).toLowerCase()
+ }
+
+ function str_repeat(input, multiplier) {
+ return Array(multiplier + 1).join(input)
+ }
+
+ /**
+ * export to either browser or node.js
+ */
+ if (typeof exports !== "undefined") {
+ exports.sprintf = sprintf
+ exports.vsprintf = vsprintf
+ }
+ else {
+ window.sprintf = sprintf
+ window.vsprintf = vsprintf
+
+ if (typeof define === "function" && define.amd) {
+ define(function() {
+ return {
+ sprintf: sprintf,
+ vsprintf: vsprintf
+ }
+ })
+ }
+ }
+})(typeof window === "undefined" ? this : window);
projects / plack-app-gruntmaster.git / blobdiff