diff options
Diffstat (limited to 'node_modules/sprintf-js/src/sprintf.js')
| -rw-r--r-- | node_modules/sprintf-js/src/sprintf.js | 231 |
1 files changed, 231 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 0000000000..65d6324645 --- /dev/null +++ b/node_modules/sprintf-js/src/sprintf.js @@ -0,0 +1,231 @@ +/* global window, exports, define */ + +!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) { + // `arguments` is not an array, but should be fine for this call + 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] // convenience purposes only + if (ph.keys) { // keyword argument + 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) { // positional argument (explicit) + arg = argv[ph.param_no] + } + else { // positional argument (implicit) + 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 + } + + /** + * export to either browser or node.js + */ + /* eslint-disable quote-props */ + 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 + } + }) + } + } + /* eslint-enable quote-props */ +}(); // eslint-disable-line |