diff options
Diffstat (limited to 'node_modules/sprintf-js/src/sprintf.js')
| -rw-r--r-- | node_modules/sprintf-js/src/sprintf.js | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/node_modules/sprintf-js/src/sprintf.js b/node_modules/sprintf-js/src/sprintf.js new file mode 100644 index 0000000..c0fc7c0 --- /dev/null +++ b/node_modules/sprintf-js/src/sprintf.js @@ -0,0 +1,208 @@ +(function(window) { + var re = { + not_string: /[^s]/, + number: /[diefg]/, + json: /[j]/, + not_json: /[^j]/, + text: /^[^\x25]+/, + modulo: /^\x25{2}/, + placeholder: /^\x25(?:([1-9]\d*)\$|\(([^\)]+)\))?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?([b-gijosuxX])/, + 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]) && re.not_json.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 "j": + arg = JSON.stringify(arg, null, match[6] ? parseInt(match[6]) : 0) + 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 "g": + arg = match[7] ? parseFloat(arg).toPrecision(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.json.test(match[8])) { + output[output.length] = arg + } + else { + 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); |