| |
|
|
| !function() { |
| 'use strict' |
|
|
| var re = { |
| not_string: /[^s]/, |
| not_bool: /[^t]/, |
| not_type: /[^T]/, |
| not_primitive: /[^v]/, |
| number: /[diefg]/, |
| numeric_arg: /[bcdiefguxX]/, |
| json: /[j]/, |
| not_json: /[^j]/, |
| text: /^[^\x25]+/, |
| modulo: /^\x25{2}/, |
| placeholder: /^\x25(?:([1-9]\d*)\$|\(([^)]+)\))?(\+)?(0|'[^$])?(-)?(\d+)?(?:\.(\d+))?([b-gijostTuvxX])/, |
| key: /^([a-z_][a-z_\d]*)/i, |
| key_access: /^\.([a-z_][a-z_\d]*)/i, |
| index_access: /^\[(\d+)\]/, |
| sign: /^[+-]/ |
| } |
|
|
| function sprintf(key) { |
| |
| return sprintf_format(sprintf_parse(key), arguments) |
| } |
|
|
| function vsprintf(fmt, argv) { |
| return sprintf.apply(null, [fmt].concat(argv || [])) |
| } |
|
|
| function sprintf_format(parse_tree, argv) { |
| var cursor = 1, tree_length = parse_tree.length, arg, output = '', i, k, ph, pad, pad_character, pad_length, is_positive, sign |
| for (i = 0; i < tree_length; i++) { |
| if (typeof parse_tree[i] === 'string') { |
| output += parse_tree[i] |
| } |
| else if (typeof parse_tree[i] === 'object') { |
| ph = parse_tree[i] |
| if (ph.keys) { |
| arg = argv[cursor] |
| for (k = 0; k < ph.keys.length; k++) { |
| if (arg == undefined) { |
| throw new Error(sprintf('[sprintf] Cannot access property "%s" of undefined value "%s"', ph.keys[k], ph.keys[k-1])) |
| } |
| arg = arg[ph.keys[k]] |
| } |
| } |
| else if (ph.param_no) { |
| arg = argv[ph.param_no] |
| } |
| else { |
| arg = argv[cursor++] |
| } |
|
|
| if (re.not_type.test(ph.type) && re.not_primitive.test(ph.type) && arg instanceof Function) { |
| arg = arg() |
| } |
|
|
| if (re.numeric_arg.test(ph.type) && (typeof arg !== 'number' && isNaN(arg))) { |
| throw new TypeError(sprintf('[sprintf] expecting number but found %T', arg)) |
| } |
|
|
| if (re.number.test(ph.type)) { |
| is_positive = arg >= 0 |
| } |
|
|
| switch (ph.type) { |
| case 'b': |
| arg = parseInt(arg, 10).toString(2) |
| break |
| case 'c': |
| arg = String.fromCharCode(parseInt(arg, 10)) |
| break |
| case 'd': |
| case 'i': |
| arg = parseInt(arg, 10) |
| break |
| case 'j': |
| arg = JSON.stringify(arg, null, ph.width ? parseInt(ph.width) : 0) |
| break |
| case 'e': |
| arg = ph.precision ? parseFloat(arg).toExponential(ph.precision) : parseFloat(arg).toExponential() |
| break |
| case 'f': |
| arg = ph.precision ? parseFloat(arg).toFixed(ph.precision) : parseFloat(arg) |
| break |
| case 'g': |
| arg = ph.precision ? String(Number(arg.toPrecision(ph.precision))) : parseFloat(arg) |
| break |
| case 'o': |
| arg = (parseInt(arg, 10) >>> 0).toString(8) |
| break |
| case 's': |
| arg = String(arg) |
| arg = (ph.precision ? arg.substring(0, ph.precision) : arg) |
| break |
| case 't': |
| arg = String(!!arg) |
| arg = (ph.precision ? arg.substring(0, ph.precision) : arg) |
| break |
| case 'T': |
| arg = Object.prototype.toString.call(arg).slice(8, -1).toLowerCase() |
| arg = (ph.precision ? arg.substring(0, ph.precision) : arg) |
| break |
| case 'u': |
| arg = parseInt(arg, 10) >>> 0 |
| break |
| case 'v': |
| arg = arg.valueOf() |
| arg = (ph.precision ? arg.substring(0, ph.precision) : arg) |
| break |
| case 'x': |
| arg = (parseInt(arg, 10) >>> 0).toString(16) |
| break |
| case 'X': |
| arg = (parseInt(arg, 10) >>> 0).toString(16).toUpperCase() |
| break |
| } |
| if (re.json.test(ph.type)) { |
| output += arg |
| } |
| else { |
| if (re.number.test(ph.type) && (!is_positive || ph.sign)) { |
| sign = is_positive ? '+' : '-' |
| arg = arg.toString().replace(re.sign, '') |
| } |
| else { |
| sign = '' |
| } |
| pad_character = ph.pad_char ? ph.pad_char === '0' ? '0' : ph.pad_char.charAt(1) : ' ' |
| pad_length = ph.width - (sign + arg).length |
| pad = ph.width ? (pad_length > 0 ? pad_character.repeat(pad_length) : '') : '' |
| output += ph.align ? sign + arg + pad : (pad_character === '0' ? sign + pad + arg : pad + sign + arg) |
| } |
| } |
| } |
| return output |
| } |
|
|
| var sprintf_cache = Object.create(null) |
|
|
| function sprintf_parse(fmt) { |
| if (sprintf_cache[fmt]) { |
| return sprintf_cache[fmt] |
| } |
|
|
| var _fmt = fmt, match, parse_tree = [], arg_names = 0 |
| while (_fmt) { |
| if ((match = re.text.exec(_fmt)) !== null) { |
| parse_tree.push(match[0]) |
| } |
| else if ((match = re.modulo.exec(_fmt)) !== null) { |
| parse_tree.push('%') |
| } |
| 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.push(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.push(field_match[1]) |
| } |
| else if ((field_match = re.index_access.exec(replacement_field)) !== null) { |
| field_list.push(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.push( |
| { |
| placeholder: match[0], |
| param_no: match[1], |
| keys: match[2], |
| sign: match[3], |
| pad_char: match[4], |
| align: match[5], |
| width: match[6], |
| precision: match[7], |
| type: match[8] |
| } |
| ) |
| } |
| else { |
| throw new SyntaxError('[sprintf] unexpected placeholder') |
| } |
| _fmt = _fmt.substring(match[0].length) |
| } |
| return sprintf_cache[fmt] = parse_tree |
| } |
|
|
| |
| |
| |
| |
| if (typeof exports !== 'undefined') { |
| exports['sprintf'] = sprintf |
| exports['vsprintf'] = vsprintf |
| } |
| if (typeof window !== 'undefined') { |
| window['sprintf'] = sprintf |
| window['vsprintf'] = vsprintf |
|
|
| if (typeof define === 'function' && define['amd']) { |
| define(function() { |
| return { |
| 'sprintf': sprintf, |
| 'vsprintf': vsprintf |
| } |
| }) |
| } |
| } |
| |
| }(); |
|
|
