351 lines
10 KiB
JavaScript
351 lines
10 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.stringifyNumber = stringifyNumber;
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exports.stringifyString = stringifyString;
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var _addComment = require("./addComment");
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var _constants = require("./constants");
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var _foldFlowLines = _interopRequireWildcard(require("./foldFlowLines"));
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var _options = require("./tags/options");
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function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
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function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; if (obj != null) { var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
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function stringifyNumber({
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format,
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minFractionDigits,
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tag,
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value
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}) {
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if (!isFinite(value)) return isNaN(value) ? '.nan' : value < 0 ? '-.inf' : '.inf';
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let n = JSON.stringify(value);
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if (!format && minFractionDigits && (!tag || tag === 'tag:yaml.org,2002:float') && /^\d/.test(n)) {
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let i = n.indexOf('.');
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if (i < 0) {
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i = n.length;
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n += '.';
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}
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let d = minFractionDigits - (n.length - i - 1);
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while (d-- > 0) n += '0';
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}
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return n;
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}
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function lineLengthOverLimit(str, limit) {
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const strLen = str.length;
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if (strLen <= limit) return false;
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for (let i = 0, start = 0; i < strLen; ++i) {
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if (str[i] === '\n') {
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if (i - start > limit) return true;
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start = i + 1;
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if (strLen - start <= limit) return false;
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}
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}
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return true;
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}
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function doubleQuotedString(value, {
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implicitKey,
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indent
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}) {
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const {
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jsonEncoding,
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minMultiLineLength
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} = _options.strOptions.doubleQuoted;
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const json = JSON.stringify(value);
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if (jsonEncoding) return json;
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let str = '';
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let start = 0;
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for (let i = 0, ch = json[i]; ch; ch = json[++i]) {
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if (ch === ' ' && json[i + 1] === '\\' && json[i + 2] === 'n') {
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// space before newline needs to be escaped to not be folded
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str += json.slice(start, i) + '\\ ';
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i += 1;
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start = i;
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ch = '\\';
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}
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if (ch === '\\') switch (json[i + 1]) {
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case 'u':
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{
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str += json.slice(start, i);
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const code = json.substr(i + 2, 4);
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switch (code) {
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case '0000':
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str += '\\0';
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break;
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case '0007':
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str += '\\a';
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break;
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case '000b':
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str += '\\v';
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break;
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case '001b':
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str += '\\e';
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break;
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case '0085':
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str += '\\N';
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break;
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case '00a0':
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str += '\\_';
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break;
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case '2028':
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str += '\\L';
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break;
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case '2029':
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str += '\\P';
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break;
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default:
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if (code.substr(0, 2) === '00') str += '\\x' + code.substr(2);else str += json.substr(i, 6);
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}
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i += 5;
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start = i + 1;
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}
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break;
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case 'n':
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if (implicitKey || json[i + 2] === '"' || json.length < minMultiLineLength) {
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i += 1;
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} else {
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// folding will eat first newline
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str += json.slice(start, i) + '\n\n';
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while (json[i + 2] === '\\' && json[i + 3] === 'n' && json[i + 4] !== '"') {
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str += '\n';
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i += 2;
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}
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str += indent; // space after newline needs to be escaped to not be folded
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if (json[i + 2] === ' ') str += '\\';
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i += 1;
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start = i + 1;
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}
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break;
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default:
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i += 1;
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}
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}
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str = start ? str + json.slice(start) : json;
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return implicitKey ? str : (0, _foldFlowLines.default)(str, indent, _foldFlowLines.FOLD_QUOTED, _options.strOptions.fold);
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}
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function singleQuotedString(value, ctx) {
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const {
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indent,
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implicitKey
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} = ctx;
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if (implicitKey) {
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if (/\n/.test(value)) return doubleQuotedString(value, ctx);
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} else {
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// single quoted string can't have leading or trailing whitespace around newline
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if (/[ \t]\n|\n[ \t]/.test(value)) return doubleQuotedString(value, ctx);
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}
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const res = "'" + value.replace(/'/g, "''").replace(/\n+/g, `$&\n${indent}`) + "'";
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return implicitKey ? res : (0, _foldFlowLines.default)(res, indent, _foldFlowLines.FOLD_FLOW, _options.strOptions.fold);
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}
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function blockString({
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comment,
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type,
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value
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}, ctx, onComment, onChompKeep) {
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// 1. Block can't end in whitespace unless the last line is non-empty.
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// 2. Strings consisting of only whitespace are best rendered explicitly.
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if (/\n[\t ]+$/.test(value) || /^\s*$/.test(value)) {
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return doubleQuotedString(value, ctx);
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}
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const indent = ctx.indent || (ctx.forceBlockIndent ? ' ' : '');
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const indentSize = indent ? '2' : '1'; // root is at -1
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const literal = type === _constants.Type.BLOCK_FOLDED ? false : type === _constants.Type.BLOCK_LITERAL ? true : !lineLengthOverLimit(value, _options.strOptions.fold.lineWidth - indent.length);
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let header = literal ? '|' : '>';
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if (!value) return header + '\n';
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let wsStart = '';
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let wsEnd = '';
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value = value.replace(/[\n\t ]*$/, ws => {
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const n = ws.indexOf('\n');
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if (n === -1) {
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header += '-'; // strip
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} else if (value === ws || n !== ws.length - 1) {
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header += '+'; // keep
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if (onChompKeep) onChompKeep();
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}
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wsEnd = ws.replace(/\n$/, '');
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return '';
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}).replace(/^[\n ]*/, ws => {
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if (ws.indexOf(' ') !== -1) header += indentSize;
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const m = ws.match(/ +$/);
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if (m) {
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wsStart = ws.slice(0, -m[0].length);
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return m[0];
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} else {
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wsStart = ws;
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return '';
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}
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});
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if (wsEnd) wsEnd = wsEnd.replace(/\n+(?!\n|$)/g, `$&${indent}`);
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if (wsStart) wsStart = wsStart.replace(/\n+/g, `$&${indent}`);
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if (comment) {
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header += ' #' + comment.replace(/ ?[\r\n]+/g, ' ');
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if (onComment) onComment();
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}
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if (!value) return `${header}${indentSize}\n${indent}${wsEnd}`;
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if (literal) {
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value = value.replace(/\n+/g, `$&${indent}`);
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return `${header}\n${indent}${wsStart}${value}${wsEnd}`;
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}
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value = value.replace(/\n+/g, '\n$&').replace(/(?:^|\n)([\t ].*)(?:([\n\t ]*)\n(?![\n\t ]))?/g, '$1$2') // more-indented lines aren't folded
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// ^ ind.line ^ empty ^ capture next empty lines only at end of indent
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.replace(/\n+/g, `$&${indent}`);
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const body = (0, _foldFlowLines.default)(`${wsStart}${value}${wsEnd}`, indent, _foldFlowLines.FOLD_BLOCK, _options.strOptions.fold);
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return `${header}\n${indent}${body}`;
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}
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function plainString(item, ctx, onComment, onChompKeep) {
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const {
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comment,
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type,
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value
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} = item;
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const {
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actualString,
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implicitKey,
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indent,
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inFlow,
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tags
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} = ctx;
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if (implicitKey && /[\n[\]{},]/.test(value) || inFlow && /[[\]{},]/.test(value)) {
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return doubleQuotedString(value, ctx);
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}
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if (!value || /^[\n\t ,[\]{}#&*!|>'"%@`]|^[?-]$|^[?-][ \t]|[\n:][ \t]|[ \t]\n|[\n\t ]#|[\n\t :]$/.test(value)) {
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// not allowed:
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// - empty string, '-' or '?'
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// - start with an indicator character (except [?:-]) or /[?-] /
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// - '\n ', ': ' or ' \n' anywhere
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// - '#' not preceded by a non-space char
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// - end with ' ' or ':'
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return implicitKey || inFlow || value.indexOf('\n') === -1 ? value.indexOf('"') !== -1 && value.indexOf("'") === -1 ? singleQuotedString(value, ctx) : doubleQuotedString(value, ctx) : blockString(item, ctx, onComment, onChompKeep);
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}
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if (!implicitKey && !inFlow && type !== _constants.Type.PLAIN && value.indexOf('\n') !== -1) {
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// Where allowed & type not set explicitly, prefer block style for multiline strings
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return blockString(item, ctx, onComment, onChompKeep);
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}
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const str = value.replace(/\n+/g, `$&\n${indent}`); // Verify that output will be parsed as a string, as e.g. plain numbers and
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// booleans get parsed with those types in v1.2 (e.g. '42', 'true' & '0.9e-3'),
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// and others in v1.1.
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if (actualString && typeof tags.resolveScalar(str).value !== 'string') {
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return doubleQuotedString(value, ctx);
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}
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const body = implicitKey ? str : (0, _foldFlowLines.default)(str, indent, _foldFlowLines.FOLD_FLOW, _options.strOptions.fold);
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if (comment && !inFlow && (body.indexOf('\n') !== -1 || comment.indexOf('\n') !== -1)) {
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if (onComment) onComment();
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return (0, _addComment.addCommentBefore)(body, indent, comment);
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}
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return body;
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}
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function stringifyString(item, ctx, onComment, onChompKeep) {
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const {
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defaultType
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} = _options.strOptions;
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const {
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implicitKey,
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inFlow
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} = ctx;
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let {
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type,
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value
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} = item;
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if (typeof value !== 'string') {
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value = String(value);
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item = Object.assign({}, item, {
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value
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});
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}
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const _stringify = _type => {
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switch (_type) {
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case _constants.Type.BLOCK_FOLDED:
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case _constants.Type.BLOCK_LITERAL:
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return blockString(item, ctx, onComment, onChompKeep);
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case _constants.Type.QUOTE_DOUBLE:
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return doubleQuotedString(value, ctx);
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case _constants.Type.QUOTE_SINGLE:
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return singleQuotedString(value, ctx);
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case _constants.Type.PLAIN:
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return plainString(item, ctx, onComment, onChompKeep);
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default:
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return null;
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}
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};
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if (type !== _constants.Type.QUOTE_DOUBLE && /[\x00-\x08\x0b-\x1f\x7f-\x9f]/.test(value)) {
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// force double quotes on control characters
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type = _constants.Type.QUOTE_DOUBLE;
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} else if ((implicitKey || inFlow) && (type === _constants.Type.BLOCK_FOLDED || type === _constants.Type.BLOCK_LITERAL)) {
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// should not happen; blocks are not valid inside flow containers
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type = _constants.Type.QUOTE_DOUBLE;
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}
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let res = _stringify(type);
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if (res === null) {
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res = _stringify(defaultType);
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if (res === null) throw new Error(`Unsupported default string type ${defaultType}`);
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}
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return res;
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} |