851 lines
27 KiB
JavaScript
851 lines
27 KiB
JavaScript
'use strict';
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/*eslint-disable no-use-before-define*/
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var common = require('./common');
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var YAMLException = require('./exception');
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var DEFAULT_FULL_SCHEMA = require('./schema/default_full');
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var DEFAULT_SAFE_SCHEMA = require('./schema/default_safe');
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var _toString = Object.prototype.toString;
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var _hasOwnProperty = Object.prototype.hasOwnProperty;
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var CHAR_TAB = 0x09; /* Tab */
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var CHAR_LINE_FEED = 0x0A; /* LF */
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var CHAR_CARRIAGE_RETURN = 0x0D; /* CR */
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var CHAR_SPACE = 0x20; /* Space */
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var CHAR_EXCLAMATION = 0x21; /* ! */
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var CHAR_DOUBLE_QUOTE = 0x22; /* " */
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var CHAR_SHARP = 0x23; /* # */
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var CHAR_PERCENT = 0x25; /* % */
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var CHAR_AMPERSAND = 0x26; /* & */
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var CHAR_SINGLE_QUOTE = 0x27; /* ' */
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var CHAR_ASTERISK = 0x2A; /* * */
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var CHAR_COMMA = 0x2C; /* , */
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var CHAR_MINUS = 0x2D; /* - */
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var CHAR_COLON = 0x3A; /* : */
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var CHAR_EQUALS = 0x3D; /* = */
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var CHAR_GREATER_THAN = 0x3E; /* > */
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var CHAR_QUESTION = 0x3F; /* ? */
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var CHAR_COMMERCIAL_AT = 0x40; /* @ */
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var CHAR_LEFT_SQUARE_BRACKET = 0x5B; /* [ */
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var CHAR_RIGHT_SQUARE_BRACKET = 0x5D; /* ] */
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var CHAR_GRAVE_ACCENT = 0x60; /* ` */
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var CHAR_LEFT_CURLY_BRACKET = 0x7B; /* { */
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var CHAR_VERTICAL_LINE = 0x7C; /* | */
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var CHAR_RIGHT_CURLY_BRACKET = 0x7D; /* } */
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var ESCAPE_SEQUENCES = {};
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ESCAPE_SEQUENCES[0x00] = '\\0';
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ESCAPE_SEQUENCES[0x07] = '\\a';
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ESCAPE_SEQUENCES[0x08] = '\\b';
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ESCAPE_SEQUENCES[0x09] = '\\t';
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ESCAPE_SEQUENCES[0x0A] = '\\n';
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ESCAPE_SEQUENCES[0x0B] = '\\v';
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ESCAPE_SEQUENCES[0x0C] = '\\f';
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ESCAPE_SEQUENCES[0x0D] = '\\r';
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ESCAPE_SEQUENCES[0x1B] = '\\e';
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ESCAPE_SEQUENCES[0x22] = '\\"';
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ESCAPE_SEQUENCES[0x5C] = '\\\\';
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ESCAPE_SEQUENCES[0x85] = '\\N';
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ESCAPE_SEQUENCES[0xA0] = '\\_';
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ESCAPE_SEQUENCES[0x2028] = '\\L';
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ESCAPE_SEQUENCES[0x2029] = '\\P';
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var DEPRECATED_BOOLEANS_SYNTAX = [
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'y', 'Y', 'yes', 'Yes', 'YES', 'on', 'On', 'ON',
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'n', 'N', 'no', 'No', 'NO', 'off', 'Off', 'OFF'
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];
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function compileStyleMap(schema, map) {
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var result, keys, index, length, tag, style, type;
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if (map === null) return {};
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result = {};
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keys = Object.keys(map);
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for (index = 0, length = keys.length; index < length; index += 1) {
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tag = keys[index];
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style = String(map[tag]);
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if (tag.slice(0, 2) === '!!') {
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tag = 'tag:yaml.org,2002:' + tag.slice(2);
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}
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type = schema.compiledTypeMap['fallback'][tag];
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if (type && _hasOwnProperty.call(type.styleAliases, style)) {
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style = type.styleAliases[style];
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}
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result[tag] = style;
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}
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return result;
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}
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function encodeHex(character) {
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var string, handle, length;
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string = character.toString(16).toUpperCase();
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if (character <= 0xFF) {
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handle = 'x';
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length = 2;
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} else if (character <= 0xFFFF) {
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handle = 'u';
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length = 4;
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} else if (character <= 0xFFFFFFFF) {
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handle = 'U';
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length = 8;
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} else {
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throw new YAMLException('code point within a string may not be greater than 0xFFFFFFFF');
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}
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return '\\' + handle + common.repeat('0', length - string.length) + string;
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}
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function State(options) {
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this.schema = options['schema'] || DEFAULT_FULL_SCHEMA;
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this.indent = Math.max(1, (options['indent'] || 2));
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this.noArrayIndent = options['noArrayIndent'] || false;
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this.skipInvalid = options['skipInvalid'] || false;
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this.flowLevel = (common.isNothing(options['flowLevel']) ? -1 : options['flowLevel']);
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this.styleMap = compileStyleMap(this.schema, options['styles'] || null);
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this.sortKeys = options['sortKeys'] || false;
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this.lineWidth = options['lineWidth'] || 80;
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this.noRefs = options['noRefs'] || false;
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this.noCompatMode = options['noCompatMode'] || false;
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this.condenseFlow = options['condenseFlow'] || false;
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this.implicitTypes = this.schema.compiledImplicit;
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this.explicitTypes = this.schema.compiledExplicit;
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this.tag = null;
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this.result = '';
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this.duplicates = [];
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this.usedDuplicates = null;
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}
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// Indents every line in a string. Empty lines (\n only) are not indented.
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function indentString(string, spaces) {
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var ind = common.repeat(' ', spaces),
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position = 0,
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next = -1,
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result = '',
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line,
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length = string.length;
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while (position < length) {
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next = string.indexOf('\n', position);
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if (next === -1) {
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line = string.slice(position);
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position = length;
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} else {
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line = string.slice(position, next + 1);
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position = next + 1;
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}
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if (line.length && line !== '\n') result += ind;
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result += line;
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}
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return result;
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}
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function generateNextLine(state, level) {
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return '\n' + common.repeat(' ', state.indent * level);
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}
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function testImplicitResolving(state, str) {
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var index, length, type;
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for (index = 0, length = state.implicitTypes.length; index < length; index += 1) {
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type = state.implicitTypes[index];
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if (type.resolve(str)) {
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return true;
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}
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}
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return false;
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}
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// [33] s-white ::= s-space | s-tab
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function isWhitespace(c) {
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return c === CHAR_SPACE || c === CHAR_TAB;
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}
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// Returns true if the character can be printed without escaping.
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// From YAML 1.2: "any allowed characters known to be non-printable
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// should also be escaped. [However,] This isn’t mandatory"
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// Derived from nb-char - \t - #x85 - #xA0 - #x2028 - #x2029.
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function isPrintable(c) {
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return (0x00020 <= c && c <= 0x00007E)
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|| ((0x000A1 <= c && c <= 0x00D7FF) && c !== 0x2028 && c !== 0x2029)
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|| ((0x0E000 <= c && c <= 0x00FFFD) && c !== 0xFEFF /* BOM */)
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|| (0x10000 <= c && c <= 0x10FFFF);
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}
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// [34] ns-char ::= nb-char - s-white
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// [27] nb-char ::= c-printable - b-char - c-byte-order-mark
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// [26] b-char ::= b-line-feed | b-carriage-return
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// [24] b-line-feed ::= #xA /* LF */
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// [25] b-carriage-return ::= #xD /* CR */
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// [3] c-byte-order-mark ::= #xFEFF
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function isNsChar(c) {
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return isPrintable(c) && !isWhitespace(c)
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// byte-order-mark
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&& c !== 0xFEFF
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// b-char
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&& c !== CHAR_CARRIAGE_RETURN
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&& c !== CHAR_LINE_FEED;
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}
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// Simplified test for values allowed after the first character in plain style.
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function isPlainSafe(c, prev) {
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// Uses a subset of nb-char - c-flow-indicator - ":" - "#"
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// where nb-char ::= c-printable - b-char - c-byte-order-mark.
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return isPrintable(c) && c !== 0xFEFF
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// - c-flow-indicator
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&& c !== CHAR_COMMA
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&& c !== CHAR_LEFT_SQUARE_BRACKET
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&& c !== CHAR_RIGHT_SQUARE_BRACKET
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&& c !== CHAR_LEFT_CURLY_BRACKET
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&& c !== CHAR_RIGHT_CURLY_BRACKET
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// - ":" - "#"
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// /* An ns-char preceding */ "#"
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&& c !== CHAR_COLON
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&& ((c !== CHAR_SHARP) || (prev && isNsChar(prev)));
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}
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// Simplified test for values allowed as the first character in plain style.
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function isPlainSafeFirst(c) {
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// Uses a subset of ns-char - c-indicator
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// where ns-char = nb-char - s-white.
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return isPrintable(c) && c !== 0xFEFF
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&& !isWhitespace(c) // - s-white
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// - (c-indicator ::=
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// “-” | “?” | “:” | “,” | “[” | “]” | “{” | “}”
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&& c !== CHAR_MINUS
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&& c !== CHAR_QUESTION
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&& c !== CHAR_COLON
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&& c !== CHAR_COMMA
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&& c !== CHAR_LEFT_SQUARE_BRACKET
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&& c !== CHAR_RIGHT_SQUARE_BRACKET
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&& c !== CHAR_LEFT_CURLY_BRACKET
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&& c !== CHAR_RIGHT_CURLY_BRACKET
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// | “#” | “&” | “*” | “!” | “|” | “=” | “>” | “'” | “"”
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&& c !== CHAR_SHARP
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&& c !== CHAR_AMPERSAND
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&& c !== CHAR_ASTERISK
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&& c !== CHAR_EXCLAMATION
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&& c !== CHAR_VERTICAL_LINE
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&& c !== CHAR_EQUALS
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&& c !== CHAR_GREATER_THAN
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&& c !== CHAR_SINGLE_QUOTE
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&& c !== CHAR_DOUBLE_QUOTE
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// | “%” | “@” | “`”)
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&& c !== CHAR_PERCENT
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&& c !== CHAR_COMMERCIAL_AT
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&& c !== CHAR_GRAVE_ACCENT;
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}
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// Determines whether block indentation indicator is required.
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function needIndentIndicator(string) {
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var leadingSpaceRe = /^\n* /;
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return leadingSpaceRe.test(string);
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}
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var STYLE_PLAIN = 1,
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STYLE_SINGLE = 2,
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STYLE_LITERAL = 3,
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STYLE_FOLDED = 4,
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STYLE_DOUBLE = 5;
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// Determines which scalar styles are possible and returns the preferred style.
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// lineWidth = -1 => no limit.
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// Pre-conditions: str.length > 0.
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// Post-conditions:
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// STYLE_PLAIN or STYLE_SINGLE => no \n are in the string.
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// STYLE_LITERAL => no lines are suitable for folding (or lineWidth is -1).
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// STYLE_FOLDED => a line > lineWidth and can be folded (and lineWidth != -1).
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function chooseScalarStyle(string, singleLineOnly, indentPerLevel, lineWidth, testAmbiguousType) {
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var i;
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var char, prev_char;
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var hasLineBreak = false;
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var hasFoldableLine = false; // only checked if shouldTrackWidth
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var shouldTrackWidth = lineWidth !== -1;
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var previousLineBreak = -1; // count the first line correctly
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var plain = isPlainSafeFirst(string.charCodeAt(0))
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&& !isWhitespace(string.charCodeAt(string.length - 1));
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if (singleLineOnly) {
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// Case: no block styles.
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// Check for disallowed characters to rule out plain and single.
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for (i = 0; i < string.length; i++) {
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char = string.charCodeAt(i);
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if (!isPrintable(char)) {
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return STYLE_DOUBLE;
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}
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prev_char = i > 0 ? string.charCodeAt(i - 1) : null;
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plain = plain && isPlainSafe(char, prev_char);
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}
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} else {
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// Case: block styles permitted.
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for (i = 0; i < string.length; i++) {
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char = string.charCodeAt(i);
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if (char === CHAR_LINE_FEED) {
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hasLineBreak = true;
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// Check if any line can be folded.
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if (shouldTrackWidth) {
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hasFoldableLine = hasFoldableLine ||
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// Foldable line = too long, and not more-indented.
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(i - previousLineBreak - 1 > lineWidth &&
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string[previousLineBreak + 1] !== ' ');
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previousLineBreak = i;
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}
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} else if (!isPrintable(char)) {
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return STYLE_DOUBLE;
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}
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prev_char = i > 0 ? string.charCodeAt(i - 1) : null;
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plain = plain && isPlainSafe(char, prev_char);
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}
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// in case the end is missing a \n
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hasFoldableLine = hasFoldableLine || (shouldTrackWidth &&
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(i - previousLineBreak - 1 > lineWidth &&
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string[previousLineBreak + 1] !== ' '));
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}
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// Although every style can represent \n without escaping, prefer block styles
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// for multiline, since they're more readable and they don't add empty lines.
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// Also prefer folding a super-long line.
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if (!hasLineBreak && !hasFoldableLine) {
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// Strings interpretable as another type have to be quoted;
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// e.g. the string 'true' vs. the boolean true.
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return plain && !testAmbiguousType(string)
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? STYLE_PLAIN : STYLE_SINGLE;
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}
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// Edge case: block indentation indicator can only have one digit.
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if (indentPerLevel > 9 && needIndentIndicator(string)) {
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return STYLE_DOUBLE;
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}
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// At this point we know block styles are valid.
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// Prefer literal style unless we want to fold.
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return hasFoldableLine ? STYLE_FOLDED : STYLE_LITERAL;
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}
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// Note: line breaking/folding is implemented for only the folded style.
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// NB. We drop the last trailing newline (if any) of a returned block scalar
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// since the dumper adds its own newline. This always works:
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// • No ending newline => unaffected; already using strip "-" chomping.
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// • Ending newline => removed then restored.
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// Importantly, this keeps the "+" chomp indicator from gaining an extra line.
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function writeScalar(state, string, level, iskey) {
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state.dump = (function () {
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if (string.length === 0) {
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return "''";
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}
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if (!state.noCompatMode &&
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DEPRECATED_BOOLEANS_SYNTAX.indexOf(string) !== -1) {
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return "'" + string + "'";
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}
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var indent = state.indent * Math.max(1, level); // no 0-indent scalars
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// As indentation gets deeper, let the width decrease monotonically
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// to the lower bound min(state.lineWidth, 40).
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// Note that this implies
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// state.lineWidth ≤ 40 + state.indent: width is fixed at the lower bound.
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// state.lineWidth > 40 + state.indent: width decreases until the lower bound.
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// This behaves better than a constant minimum width which disallows narrower options,
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// or an indent threshold which causes the width to suddenly increase.
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var lineWidth = state.lineWidth === -1
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? -1 : Math.max(Math.min(state.lineWidth, 40), state.lineWidth - indent);
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// Without knowing if keys are implicit/explicit, assume implicit for safety.
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var singleLineOnly = iskey
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// No block styles in flow mode.
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|| (state.flowLevel > -1 && level >= state.flowLevel);
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function testAmbiguity(string) {
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return testImplicitResolving(state, string);
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}
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switch (chooseScalarStyle(string, singleLineOnly, state.indent, lineWidth, testAmbiguity)) {
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case STYLE_PLAIN:
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return string;
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case STYLE_SINGLE:
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return "'" + string.replace(/'/g, "''") + "'";
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case STYLE_LITERAL:
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return '|' + blockHeader(string, state.indent)
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+ dropEndingNewline(indentString(string, indent));
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case STYLE_FOLDED:
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return '>' + blockHeader(string, state.indent)
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+ dropEndingNewline(indentString(foldString(string, lineWidth), indent));
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case STYLE_DOUBLE:
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return '"' + escapeString(string, lineWidth) + '"';
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default:
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throw new YAMLException('impossible error: invalid scalar style');
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}
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}());
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}
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// Pre-conditions: string is valid for a block scalar, 1 <= indentPerLevel <= 9.
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function blockHeader(string, indentPerLevel) {
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var indentIndicator = needIndentIndicator(string) ? String(indentPerLevel) : '';
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// note the special case: the string '\n' counts as a "trailing" empty line.
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var clip = string[string.length - 1] === '\n';
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var keep = clip && (string[string.length - 2] === '\n' || string === '\n');
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var chomp = keep ? '+' : (clip ? '' : '-');
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return indentIndicator + chomp + '\n';
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}
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// (See the note for writeScalar.)
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function dropEndingNewline(string) {
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return string[string.length - 1] === '\n' ? string.slice(0, -1) : string;
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}
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// Note: a long line without a suitable break point will exceed the width limit.
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// Pre-conditions: every char in str isPrintable, str.length > 0, width > 0.
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function foldString(string, width) {
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// In folded style, $k$ consecutive newlines output as $k+1$ newlines—
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// unless they're before or after a more-indented line, or at the very
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// beginning or end, in which case $k$ maps to $k$.
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// Therefore, parse each chunk as newline(s) followed by a content line.
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var lineRe = /(\n+)([^\n]*)/g;
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// first line (possibly an empty line)
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var result = (function () {
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var nextLF = string.indexOf('\n');
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nextLF = nextLF !== -1 ? nextLF : string.length;
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lineRe.lastIndex = nextLF;
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return foldLine(string.slice(0, nextLF), width);
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}());
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// If we haven't reached the first content line yet, don't add an extra \n.
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var prevMoreIndented = string[0] === '\n' || string[0] === ' ';
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var moreIndented;
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// rest of the lines
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var match;
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while ((match = lineRe.exec(string))) {
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var prefix = match[1], line = match[2];
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moreIndented = (line[0] === ' ');
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result += prefix
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+ (!prevMoreIndented && !moreIndented && line !== ''
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? '\n' : '')
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+ foldLine(line, width);
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prevMoreIndented = moreIndented;
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}
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return result;
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}
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// Greedy line breaking.
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// Picks the longest line under the limit each time,
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// otherwise settles for the shortest line over the limit.
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// NB. More-indented lines *cannot* be folded, as that would add an extra \n.
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function foldLine(line, width) {
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if (line === '' || line[0] === ' ') return line;
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// Since a more-indented line adds a \n, breaks can't be followed by a space.
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var breakRe = / [^ ]/g; // note: the match index will always be <= length-2.
|
||
var match;
|
||
// start is an inclusive index. end, curr, and next are exclusive.
|
||
var start = 0, end, curr = 0, next = 0;
|
||
var result = '';
|
||
|
||
// Invariants: 0 <= start <= length-1.
|
||
// 0 <= curr <= next <= max(0, length-2). curr - start <= width.
|
||
// Inside the loop:
|
||
// A match implies length >= 2, so curr and next are <= length-2.
|
||
while ((match = breakRe.exec(line))) {
|
||
next = match.index;
|
||
// maintain invariant: curr - start <= width
|
||
if (next - start > width) {
|
||
end = (curr > start) ? curr : next; // derive end <= length-2
|
||
result += '\n' + line.slice(start, end);
|
||
// skip the space that was output as \n
|
||
start = end + 1; // derive start <= length-1
|
||
}
|
||
curr = next;
|
||
}
|
||
|
||
// By the invariants, start <= length-1, so there is something left over.
|
||
// It is either the whole string or a part starting from non-whitespace.
|
||
result += '\n';
|
||
// Insert a break if the remainder is too long and there is a break available.
|
||
if (line.length - start > width && curr > start) {
|
||
result += line.slice(start, curr) + '\n' + line.slice(curr + 1);
|
||
} else {
|
||
result += line.slice(start);
|
||
}
|
||
|
||
return result.slice(1); // drop extra \n joiner
|
||
}
|
||
|
||
// Escapes a double-quoted string.
|
||
function escapeString(string) {
|
||
var result = '';
|
||
var char, nextChar;
|
||
var escapeSeq;
|
||
|
||
for (var i = 0; i < string.length; i++) {
|
||
char = string.charCodeAt(i);
|
||
// Check for surrogate pairs (reference Unicode 3.0 section "3.7 Surrogates").
|
||
if (char >= 0xD800 && char <= 0xDBFF/* high surrogate */) {
|
||
nextChar = string.charCodeAt(i + 1);
|
||
if (nextChar >= 0xDC00 && nextChar <= 0xDFFF/* low surrogate */) {
|
||
// Combine the surrogate pair and store it escaped.
|
||
result += encodeHex((char - 0xD800) * 0x400 + nextChar - 0xDC00 + 0x10000);
|
||
// Advance index one extra since we already used that char here.
|
||
i++; continue;
|
||
}
|
||
}
|
||
escapeSeq = ESCAPE_SEQUENCES[char];
|
||
result += !escapeSeq && isPrintable(char)
|
||
? string[i]
|
||
: escapeSeq || encodeHex(char);
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
function writeFlowSequence(state, level, object) {
|
||
var _result = '',
|
||
_tag = state.tag,
|
||
index,
|
||
length;
|
||
|
||
for (index = 0, length = object.length; index < length; index += 1) {
|
||
// Write only valid elements.
|
||
if (writeNode(state, level, object[index], false, false)) {
|
||
if (index !== 0) _result += ',' + (!state.condenseFlow ? ' ' : '');
|
||
_result += state.dump;
|
||
}
|
||
}
|
||
|
||
state.tag = _tag;
|
||
state.dump = '[' + _result + ']';
|
||
}
|
||
|
||
function writeBlockSequence(state, level, object, compact) {
|
||
var _result = '',
|
||
_tag = state.tag,
|
||
index,
|
||
length;
|
||
|
||
for (index = 0, length = object.length; index < length; index += 1) {
|
||
// Write only valid elements.
|
||
if (writeNode(state, level + 1, object[index], true, true)) {
|
||
if (!compact || index !== 0) {
|
||
_result += generateNextLine(state, level);
|
||
}
|
||
|
||
if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
|
||
_result += '-';
|
||
} else {
|
||
_result += '- ';
|
||
}
|
||
|
||
_result += state.dump;
|
||
}
|
||
}
|
||
|
||
state.tag = _tag;
|
||
state.dump = _result || '[]'; // Empty sequence if no valid values.
|
||
}
|
||
|
||
function writeFlowMapping(state, level, object) {
|
||
var _result = '',
|
||
_tag = state.tag,
|
||
objectKeyList = Object.keys(object),
|
||
index,
|
||
length,
|
||
objectKey,
|
||
objectValue,
|
||
pairBuffer;
|
||
|
||
for (index = 0, length = objectKeyList.length; index < length; index += 1) {
|
||
|
||
pairBuffer = '';
|
||
if (index !== 0) pairBuffer += ', ';
|
||
|
||
if (state.condenseFlow) pairBuffer += '"';
|
||
|
||
objectKey = objectKeyList[index];
|
||
objectValue = object[objectKey];
|
||
|
||
if (!writeNode(state, level, objectKey, false, false)) {
|
||
continue; // Skip this pair because of invalid key;
|
||
}
|
||
|
||
if (state.dump.length > 1024) pairBuffer += '? ';
|
||
|
||
pairBuffer += state.dump + (state.condenseFlow ? '"' : '') + ':' + (state.condenseFlow ? '' : ' ');
|
||
|
||
if (!writeNode(state, level, objectValue, false, false)) {
|
||
continue; // Skip this pair because of invalid value.
|
||
}
|
||
|
||
pairBuffer += state.dump;
|
||
|
||
// Both key and value are valid.
|
||
_result += pairBuffer;
|
||
}
|
||
|
||
state.tag = _tag;
|
||
state.dump = '{' + _result + '}';
|
||
}
|
||
|
||
function writeBlockMapping(state, level, object, compact) {
|
||
var _result = '',
|
||
_tag = state.tag,
|
||
objectKeyList = Object.keys(object),
|
||
index,
|
||
length,
|
||
objectKey,
|
||
objectValue,
|
||
explicitPair,
|
||
pairBuffer;
|
||
|
||
// Allow sorting keys so that the output file is deterministic
|
||
if (state.sortKeys === true) {
|
||
// Default sorting
|
||
objectKeyList.sort();
|
||
} else if (typeof state.sortKeys === 'function') {
|
||
// Custom sort function
|
||
objectKeyList.sort(state.sortKeys);
|
||
} else if (state.sortKeys) {
|
||
// Something is wrong
|
||
throw new YAMLException('sortKeys must be a boolean or a function');
|
||
}
|
||
|
||
for (index = 0, length = objectKeyList.length; index < length; index += 1) {
|
||
pairBuffer = '';
|
||
|
||
if (!compact || index !== 0) {
|
||
pairBuffer += generateNextLine(state, level);
|
||
}
|
||
|
||
objectKey = objectKeyList[index];
|
||
objectValue = object[objectKey];
|
||
|
||
if (!writeNode(state, level + 1, objectKey, true, true, true)) {
|
||
continue; // Skip this pair because of invalid key.
|
||
}
|
||
|
||
explicitPair = (state.tag !== null && state.tag !== '?') ||
|
||
(state.dump && state.dump.length > 1024);
|
||
|
||
if (explicitPair) {
|
||
if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
|
||
pairBuffer += '?';
|
||
} else {
|
||
pairBuffer += '? ';
|
||
}
|
||
}
|
||
|
||
pairBuffer += state.dump;
|
||
|
||
if (explicitPair) {
|
||
pairBuffer += generateNextLine(state, level);
|
||
}
|
||
|
||
if (!writeNode(state, level + 1, objectValue, true, explicitPair)) {
|
||
continue; // Skip this pair because of invalid value.
|
||
}
|
||
|
||
if (state.dump && CHAR_LINE_FEED === state.dump.charCodeAt(0)) {
|
||
pairBuffer += ':';
|
||
} else {
|
||
pairBuffer += ': ';
|
||
}
|
||
|
||
pairBuffer += state.dump;
|
||
|
||
// Both key and value are valid.
|
||
_result += pairBuffer;
|
||
}
|
||
|
||
state.tag = _tag;
|
||
state.dump = _result || '{}'; // Empty mapping if no valid pairs.
|
||
}
|
||
|
||
function detectType(state, object, explicit) {
|
||
var _result, typeList, index, length, type, style;
|
||
|
||
typeList = explicit ? state.explicitTypes : state.implicitTypes;
|
||
|
||
for (index = 0, length = typeList.length; index < length; index += 1) {
|
||
type = typeList[index];
|
||
|
||
if ((type.instanceOf || type.predicate) &&
|
||
(!type.instanceOf || ((typeof object === 'object') && (object instanceof type.instanceOf))) &&
|
||
(!type.predicate || type.predicate(object))) {
|
||
|
||
state.tag = explicit ? type.tag : '?';
|
||
|
||
if (type.represent) {
|
||
style = state.styleMap[type.tag] || type.defaultStyle;
|
||
|
||
if (_toString.call(type.represent) === '[object Function]') {
|
||
_result = type.represent(object, style);
|
||
} else if (_hasOwnProperty.call(type.represent, style)) {
|
||
_result = type.represent[style](object, style);
|
||
} else {
|
||
throw new YAMLException('!<' + type.tag + '> tag resolver accepts not "' + style + '" style');
|
||
}
|
||
|
||
state.dump = _result;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
// Serializes `object` and writes it to global `result`.
|
||
// Returns true on success, or false on invalid object.
|
||
//
|
||
function writeNode(state, level, object, block, compact, iskey) {
|
||
state.tag = null;
|
||
state.dump = object;
|
||
|
||
if (!detectType(state, object, false)) {
|
||
detectType(state, object, true);
|
||
}
|
||
|
||
var type = _toString.call(state.dump);
|
||
|
||
if (block) {
|
||
block = (state.flowLevel < 0 || state.flowLevel > level);
|
||
}
|
||
|
||
var objectOrArray = type === '[object Object]' || type === '[object Array]',
|
||
duplicateIndex,
|
||
duplicate;
|
||
|
||
if (objectOrArray) {
|
||
duplicateIndex = state.duplicates.indexOf(object);
|
||
duplicate = duplicateIndex !== -1;
|
||
}
|
||
|
||
if ((state.tag !== null && state.tag !== '?') || duplicate || (state.indent !== 2 && level > 0)) {
|
||
compact = false;
|
||
}
|
||
|
||
if (duplicate && state.usedDuplicates[duplicateIndex]) {
|
||
state.dump = '*ref_' + duplicateIndex;
|
||
} else {
|
||
if (objectOrArray && duplicate && !state.usedDuplicates[duplicateIndex]) {
|
||
state.usedDuplicates[duplicateIndex] = true;
|
||
}
|
||
if (type === '[object Object]') {
|
||
if (block && (Object.keys(state.dump).length !== 0)) {
|
||
writeBlockMapping(state, level, state.dump, compact);
|
||
if (duplicate) {
|
||
state.dump = '&ref_' + duplicateIndex + state.dump;
|
||
}
|
||
} else {
|
||
writeFlowMapping(state, level, state.dump);
|
||
if (duplicate) {
|
||
state.dump = '&ref_' + duplicateIndex + ' ' + state.dump;
|
||
}
|
||
}
|
||
} else if (type === '[object Array]') {
|
||
var arrayLevel = (state.noArrayIndent && (level > 0)) ? level - 1 : level;
|
||
if (block && (state.dump.length !== 0)) {
|
||
writeBlockSequence(state, arrayLevel, state.dump, compact);
|
||
if (duplicate) {
|
||
state.dump = '&ref_' + duplicateIndex + state.dump;
|
||
}
|
||
} else {
|
||
writeFlowSequence(state, arrayLevel, state.dump);
|
||
if (duplicate) {
|
||
state.dump = '&ref_' + duplicateIndex + ' ' + state.dump;
|
||
}
|
||
}
|
||
} else if (type === '[object String]') {
|
||
if (state.tag !== '?') {
|
||
writeScalar(state, state.dump, level, iskey);
|
||
}
|
||
} else {
|
||
if (state.skipInvalid) return false;
|
||
throw new YAMLException('unacceptable kind of an object to dump ' + type);
|
||
}
|
||
|
||
if (state.tag !== null && state.tag !== '?') {
|
||
state.dump = '!<' + state.tag + '> ' + state.dump;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
function getDuplicateReferences(object, state) {
|
||
var objects = [],
|
||
duplicatesIndexes = [],
|
||
index,
|
||
length;
|
||
|
||
inspectNode(object, objects, duplicatesIndexes);
|
||
|
||
for (index = 0, length = duplicatesIndexes.length; index < length; index += 1) {
|
||
state.duplicates.push(objects[duplicatesIndexes[index]]);
|
||
}
|
||
state.usedDuplicates = new Array(length);
|
||
}
|
||
|
||
function inspectNode(object, objects, duplicatesIndexes) {
|
||
var objectKeyList,
|
||
index,
|
||
length;
|
||
|
||
if (object !== null && typeof object === 'object') {
|
||
index = objects.indexOf(object);
|
||
if (index !== -1) {
|
||
if (duplicatesIndexes.indexOf(index) === -1) {
|
||
duplicatesIndexes.push(index);
|
||
}
|
||
} else {
|
||
objects.push(object);
|
||
|
||
if (Array.isArray(object)) {
|
||
for (index = 0, length = object.length; index < length; index += 1) {
|
||
inspectNode(object[index], objects, duplicatesIndexes);
|
||
}
|
||
} else {
|
||
objectKeyList = Object.keys(object);
|
||
|
||
for (index = 0, length = objectKeyList.length; index < length; index += 1) {
|
||
inspectNode(object[objectKeyList[index]], objects, duplicatesIndexes);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
function dump(input, options) {
|
||
options = options || {};
|
||
|
||
var state = new State(options);
|
||
|
||
if (!state.noRefs) getDuplicateReferences(input, state);
|
||
|
||
if (writeNode(state, 0, input, true, true)) return state.dump + '\n';
|
||
|
||
return '';
|
||
}
|
||
|
||
function safeDump(input, options) {
|
||
return dump(input, common.extend({ schema: DEFAULT_SAFE_SCHEMA }, options));
|
||
}
|
||
|
||
module.exports.dump = dump;
|
||
module.exports.safeDump = safeDump;
|