diff options
Diffstat (limited to 'tools/eslint/node_modules/js-yaml/lib/js-yaml/dumper.js')
| -rw-r--r-- | tools/eslint/node_modules/js-yaml/lib/js-yaml/dumper.js | 829 |
1 files changed, 829 insertions, 0 deletions
diff --git a/tools/eslint/node_modules/js-yaml/lib/js-yaml/dumper.js b/tools/eslint/node_modules/js-yaml/lib/js-yaml/dumper.js new file mode 100644 index 0000000000..1fc09ba39c --- /dev/null +++ b/tools/eslint/node_modules/js-yaml/lib/js-yaml/dumper.js @@ -0,0 +1,829 @@ +'use strict'; + +/*eslint-disable no-use-before-define*/ + +var common = require('./common'); +var YAMLException = require('./exception'); +var DEFAULT_FULL_SCHEMA = require('./schema/default_full'); +var DEFAULT_SAFE_SCHEMA = require('./schema/default_safe'); + +var _toString = Object.prototype.toString; +var _hasOwnProperty = Object.prototype.hasOwnProperty; + +var CHAR_TAB = 0x09; /* Tab */ +var CHAR_LINE_FEED = 0x0A; /* LF */ +var CHAR_CARRIAGE_RETURN = 0x0D; /* CR */ +var CHAR_SPACE = 0x20; /* Space */ +var CHAR_EXCLAMATION = 0x21; /* ! */ +var CHAR_DOUBLE_QUOTE = 0x22; /* " */ +var CHAR_SHARP = 0x23; /* # */ +var CHAR_PERCENT = 0x25; /* % */ +var CHAR_AMPERSAND = 0x26; /* & */ +var CHAR_SINGLE_QUOTE = 0x27; /* ' */ +var CHAR_ASTERISK = 0x2A; /* * */ +var CHAR_COMMA = 0x2C; /* , */ +var CHAR_MINUS = 0x2D; /* - */ +var CHAR_COLON = 0x3A; /* : */ +var CHAR_GREATER_THAN = 0x3E; /* > */ +var CHAR_QUESTION = 0x3F; /* ? */ +var CHAR_COMMERCIAL_AT = 0x40; /* @ */ +var CHAR_LEFT_SQUARE_BRACKET = 0x5B; /* [ */ +var CHAR_RIGHT_SQUARE_BRACKET = 0x5D; /* ] */ +var CHAR_GRAVE_ACCENT = 0x60; /* ` */ +var CHAR_LEFT_CURLY_BRACKET = 0x7B; /* { */ +var CHAR_VERTICAL_LINE = 0x7C; /* | */ +var CHAR_RIGHT_CURLY_BRACKET = 0x7D; /* } */ + +var ESCAPE_SEQUENCES = {}; + +ESCAPE_SEQUENCES[0x00] = '\\0'; +ESCAPE_SEQUENCES[0x07] = '\\a'; +ESCAPE_SEQUENCES[0x08] = '\\b'; +ESCAPE_SEQUENCES[0x09] = '\\t'; +ESCAPE_SEQUENCES[0x0A] = '\\n'; +ESCAPE_SEQUENCES[0x0B] = '\\v'; +ESCAPE_SEQUENCES[0x0C] = '\\f'; +ESCAPE_SEQUENCES[0x0D] = '\\r'; +ESCAPE_SEQUENCES[0x1B] = '\\e'; +ESCAPE_SEQUENCES[0x22] = '\\"'; +ESCAPE_SEQUENCES[0x5C] = '\\\\'; +ESCAPE_SEQUENCES[0x85] = '\\N'; +ESCAPE_SEQUENCES[0xA0] = '\\_'; +ESCAPE_SEQUENCES[0x2028] = '\\L'; +ESCAPE_SEQUENCES[0x2029] = '\\P'; + +var DEPRECATED_BOOLEANS_SYNTAX = [ + 'y', 'Y', 'yes', 'Yes', 'YES', 'on', 'On', 'ON', + 'n', 'N', 'no', 'No', 'NO', 'off', 'Off', 'OFF' +]; + +function compileStyleMap(schema, map) { + var result, keys, index, length, tag, style, type; + + if (null === map) { + return {}; + } + + result = {}; + keys = Object.keys(map); + + for (index = 0, length = keys.length; index < length; index += 1) { + tag = keys[index]; + style = String(map[tag]); + + if ('!!' === tag.slice(0, 2)) { + tag = 'tag:yaml.org,2002:' + tag.slice(2); + } + + type = schema.compiledTypeMap[tag]; + + if (type && _hasOwnProperty.call(type.styleAliases, style)) { + style = type.styleAliases[style]; + } + + result[tag] = style; + } + + return result; +} + +function encodeHex(character) { + var string, handle, length; + + string = character.toString(16).toUpperCase(); + + if (character <= 0xFF) { + handle = 'x'; + length = 2; + } else if (character <= 0xFFFF) { + handle = 'u'; + length = 4; + } else if (character <= 0xFFFFFFFF) { + handle = 'U'; + length = 8; + } else { + throw new YAMLException('code point within a string may not be greater than 0xFFFFFFFF'); + } + + return '\\' + handle + common.repeat('0', length - string.length) + string; +} + +function State(options) { + this.schema = options['schema'] || DEFAULT_FULL_SCHEMA; + this.indent = Math.max(1, (options['indent'] || 2)); + this.skipInvalid = options['skipInvalid'] || false; + this.flowLevel = (common.isNothing(options['flowLevel']) ? -1 : options['flowLevel']); + this.styleMap = compileStyleMap(this.schema, options['styles'] || null); + + this.implicitTypes = this.schema.compiledImplicit; + this.explicitTypes = this.schema.compiledExplicit; + + this.tag = null; + this.result = ''; + + this.duplicates = []; + this.usedDuplicates = null; +} + +function indentString(string, spaces) { + var ind = common.repeat(' ', spaces), + position = 0, + next = -1, + result = '', + line, + length = string.length; + + while (position < length) { + next = string.indexOf('\n', position); + if (next === -1) { + line = string.slice(position); + position = length; + } else { + line = string.slice(position, next + 1); + position = next + 1; + } + if (line.length && line !== '\n') { + result += ind; + } + result += line; + } + + return result; +} + +function generateNextLine(state, level) { + return '\n' + common.repeat(' ', state.indent * level); +} + +function testImplicitResolving(state, str) { + var index, length, type; + + for (index = 0, length = state.implicitTypes.length; index < length; index += 1) { + type = state.implicitTypes[index]; + + if (type.resolve(str)) { + return true; + } + } + + return false; +} + +function StringBuilder(source) { + this.source = source; + this.result = ''; + this.checkpoint = 0; +} + +StringBuilder.prototype.takeUpTo = function (position) { + var er; + + if (position < this.checkpoint) { + er = new Error('position should be > checkpoint'); + er.position = position; + er.checkpoint = this.checkpoint; + throw er; + } + + this.result += this.source.slice(this.checkpoint, position); + this.checkpoint = position; + return this; +}; + +StringBuilder.prototype.escapeChar = function () { + var character, esc; + + character = this.source.charCodeAt(this.checkpoint); + esc = ESCAPE_SEQUENCES[character] || encodeHex(character); + this.result += esc; + this.checkpoint += 1; + + return this; +}; + +StringBuilder.prototype.finish = function () { + if (this.source.length > this.checkpoint) { + this.takeUpTo(this.source.length); + } +}; + +function writeScalar(state, object, level) { + var simple, first, spaceWrap, folded, literal, single, double, + sawLineFeed, linePosition, longestLine, indent, max, character, + position, escapeSeq, hexEsc, previous, lineLength, modifier, + trailingLineBreaks, result; + + if (0 === object.length) { + state.dump = "''"; + return; + } + + if (-1 !== DEPRECATED_BOOLEANS_SYNTAX.indexOf(object)) { + state.dump = "'" + object + "'"; + return; + } + + simple = true; + first = object.length ? object.charCodeAt(0) : 0; + spaceWrap = (CHAR_SPACE === first || + CHAR_SPACE === object.charCodeAt(object.length - 1)); + + // Simplified check for restricted first characters + // http://www.yaml.org/spec/1.2/spec.html#ns-plain-first%28c%29 + if (CHAR_MINUS === first || + CHAR_QUESTION === first || + CHAR_COMMERCIAL_AT === first || + CHAR_GRAVE_ACCENT === first) { + simple = false; + } + + // can only use > and | if not wrapped in spaces. + if (spaceWrap) { + simple = false; + folded = false; + literal = false; + } else { + folded = true; + literal = true; + } + + single = true; + double = new StringBuilder(object); + + sawLineFeed = false; + linePosition = 0; + longestLine = 0; + + indent = state.indent * level; + max = 80; + if (indent < 40) { + max -= indent; + } else { + max = 40; + } + + for (position = 0; position < object.length; position++) { + character = object.charCodeAt(position); + if (simple) { + // Characters that can never appear in the simple scalar + if (!simpleChar(character)) { + simple = false; + } else { + // Still simple. If we make it all the way through like + // this, then we can just dump the string as-is. + continue; + } + } + + if (single && character === CHAR_SINGLE_QUOTE) { + single = false; + } + + escapeSeq = ESCAPE_SEQUENCES[character]; + hexEsc = needsHexEscape(character); + + if (!escapeSeq && !hexEsc) { + continue; + } + + if (character !== CHAR_LINE_FEED && + character !== CHAR_DOUBLE_QUOTE && + character !== CHAR_SINGLE_QUOTE) { + folded = false; + literal = false; + } else if (character === CHAR_LINE_FEED) { + sawLineFeed = true; + single = false; + if (position > 0) { + previous = object.charCodeAt(position - 1); + if (previous === CHAR_SPACE) { + literal = false; + folded = false; + } + } + if (folded) { + lineLength = position - linePosition; + linePosition = position; + if (lineLength > longestLine) { + longestLine = lineLength; + } + } + } + + if (character !== CHAR_DOUBLE_QUOTE) { + single = false; + } + + double.takeUpTo(position); + double.escapeChar(); + } + + if (simple && testImplicitResolving(state, object)) { + simple = false; + } + + modifier = ''; + if (folded || literal) { + trailingLineBreaks = 0; + if (object.charCodeAt(object.length - 1) === CHAR_LINE_FEED) { + trailingLineBreaks += 1; + if (object.charCodeAt(object.length - 2) === CHAR_LINE_FEED) { + trailingLineBreaks += 1; + } + } + + if (trailingLineBreaks === 0) { + modifier = '-'; + } else if (trailingLineBreaks === 2) { + modifier = '+'; + } + } + + if (literal && longestLine < max) { + folded = false; + } + + // If it's literally one line, then don't bother with the literal. + // We may still want to do a fold, though, if it's a super long line. + if (!sawLineFeed) { + literal = false; + } + + if (simple) { + state.dump = object; + } else if (single) { + state.dump = '\'' + object + '\''; + } else if (folded) { + result = fold(object, max); + state.dump = '>' + modifier + '\n' + indentString(result, indent); + } else if (literal) { + if (!modifier) { + object = object.replace(/\n$/, ''); + } + state.dump = '|' + modifier + '\n' + indentString(object, indent); + } else if (double) { + double.finish(); + state.dump = '"' + double.result + '"'; + } else { + throw new Error('Failed to dump scalar value'); + } + + return; +} + +// The `trailing` var is a regexp match of any trailing `\n` characters. +// +// There are three cases we care about: +// +// 1. One trailing `\n` on the string. Just use `|` or `>`. +// This is the assumed default. (trailing = null) +// 2. No trailing `\n` on the string. Use `|-` or `>-` to "chomp" the end. +// 3. More than one trailing `\n` on the string. Use `|+` or `>+`. +// +// In the case of `>+`, these line breaks are *not* doubled (like the line +// breaks within the string), so it's important to only end with the exact +// same number as we started. +function fold(object, max) { + var result = '', + position = 0, + length = object.length, + trailing = /\n+$/.exec(object), + newLine; + + if (trailing) { + length = trailing.index + 1; + } + + while (position < length) { + newLine = object.indexOf('\n', position); + if (newLine > length || newLine === -1) { + if (result) { + result += '\n\n'; + } + result += foldLine(object.slice(position, length), max); + position = length; + } else { + if (result) { + result += '\n\n'; + } + result += foldLine(object.slice(position, newLine), max); + position = newLine + 1; + } + } + if (trailing && trailing[0] !== '\n') { + result += trailing[0]; + } + + return result; +} + +function foldLine(line, max) { + if (line === '') { + return line; + } + + var foldRe = /[^\s] [^\s]/g, + result = '', + prevMatch = 0, + foldStart = 0, + match = foldRe.exec(line), + index, + foldEnd, + folded; + + while (match) { + index = match.index; + + // when we cross the max len, if the previous match would've + // been ok, use that one, and carry on. If there was no previous + // match on this fold section, then just have a long line. + if (index - foldStart > max) { + if (prevMatch !== foldStart) { + foldEnd = prevMatch; + } else { + foldEnd = index; + } + + if (result) { + result += '\n'; + } + folded = line.slice(foldStart, foldEnd); + result += folded; + foldStart = foldEnd + 1; + } + prevMatch = index + 1; + match = foldRe.exec(line); + } + + if (result) { + result += '\n'; + } + + // if we end up with one last word at the end, then the last bit might + // be slightly bigger than we wanted, because we exited out of the loop. + if (foldStart !== prevMatch && line.length - foldStart > max) { + result += line.slice(foldStart, prevMatch) + '\n' + + line.slice(prevMatch + 1); + } else { + result += line.slice(foldStart); + } + + return result; +} + +// Returns true if character can be found in a simple scalar +function simpleChar(character) { + return CHAR_TAB !== character && + CHAR_LINE_FEED !== character && + CHAR_CARRIAGE_RETURN !== character && + CHAR_COMMA !== character && + CHAR_LEFT_SQUARE_BRACKET !== character && + CHAR_RIGHT_SQUARE_BRACKET !== character && + CHAR_LEFT_CURLY_BRACKET !== character && + CHAR_RIGHT_CURLY_BRACKET !== character && + CHAR_SHARP !== character && + CHAR_AMPERSAND !== character && + CHAR_ASTERISK !== character && + CHAR_EXCLAMATION !== character && + CHAR_VERTICAL_LINE !== character && + CHAR_GREATER_THAN !== character && + CHAR_SINGLE_QUOTE !== character && + CHAR_DOUBLE_QUOTE !== character && + CHAR_PERCENT !== character && + CHAR_COLON !== character && + !ESCAPE_SEQUENCES[character] && + !needsHexEscape(character); +} + +// Returns true if the character code needs to be escaped. +function needsHexEscape(character) { + return !((0x00020 <= character && character <= 0x00007E) || + (0x00085 === character) || + (0x000A0 <= character && character <= 0x00D7FF) || + (0x0E000 <= character && character <= 0x00FFFD) || + (0x10000 <= character && character <= 0x10FFFF)); +} + +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 (0 !== index) { + _result += ', '; + } + _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 || 0 !== index) { + _result += generateNextLine(state, level); + } + _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 (0 !== index) { + 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 + ': '; + + 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; + + for (index = 0, length = objectKeyList.length; index < length; index += 1) { + pairBuffer = ''; + + if (!compact || 0 !== index) { + pairBuffer += generateNextLine(state, level); + } + + objectKey = objectKeyList[index]; + objectValue = object[objectKey]; + + if (!writeNode(state, level + 1, objectKey, true, true)) { + continue; // Skip this pair because of invalid key. + } + + explicitPair = (null !== state.tag && '?' !== 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 || (('object' === typeof 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 ('[object Function]' === _toString.call(type.represent)) { + _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) { + state.tag = null; + state.dump = object; + + if (!detectType(state, object, false)) { + detectType(state, object, true); + } + + var type = _toString.call(state.dump); + + if (block) { + block = (0 > state.flowLevel || state.flowLevel > level); + } + + if ((null !== state.tag && '?' !== state.tag) || (2 !== state.indent && level > 0)) { + compact = false; + } + + var objectOrArray = '[object Object]' === type || '[object Array]' === type, + duplicateIndex, + duplicate; + + if (objectOrArray) { + duplicateIndex = state.duplicates.indexOf(object); + duplicate = duplicateIndex !== -1; + } + + if (duplicate && state.usedDuplicates[duplicateIndex]) { + state.dump = '*ref_' + duplicateIndex; + } else { + if (objectOrArray && duplicate && !state.usedDuplicates[duplicateIndex]) { + state.usedDuplicates[duplicateIndex] = true; + } + if ('[object Object]' === type) { + if (block && (0 !== Object.keys(state.dump).length)) { + writeBlockMapping(state, level, state.dump, compact); + if (duplicate) { + state.dump = '&ref_' + duplicateIndex + (0 === level ? '\n' : '') + state.dump; + } + } else { + writeFlowMapping(state, level, state.dump); + if (duplicate) { + state.dump = '&ref_' + duplicateIndex + ' ' + state.dump; + } + } + } else if ('[object Array]' === type) { + if (block && (0 !== state.dump.length)) { + writeBlockSequence(state, level, state.dump, compact); + if (duplicate) { + state.dump = '&ref_' + duplicateIndex + (0 === level ? '\n' : '') + state.dump; + } + } else { + writeFlowSequence(state, level, state.dump); + if (duplicate) { + state.dump = '&ref_' + duplicateIndex + ' ' + state.dump; + } + } + } else if ('[object String]' === type) { + if ('?' !== state.tag) { + writeScalar(state, state.dump, level); + } + } else { + if (state.skipInvalid) { + return false; + } + throw new YAMLException('unacceptable kind of an object to dump ' + type); + } + + if (null !== state.tag && '?' !== 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 type = _toString.call(object), + objectKeyList, + index, + length; + + if (null !== object && 'object' === typeof object) { + index = objects.indexOf(object); + if (-1 !== index) { + if (-1 === duplicatesIndexes.indexOf(index)) { + 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); + + 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; |