| 'use strict'; |
| |
| function parseContentType(str) { |
| if (str.length === 0) |
| return; |
| |
| const params = Object.create(null); |
| let i = 0; |
| |
| // Parse type |
| for (; i < str.length; ++i) { |
| const code = str.charCodeAt(i); |
| if (TOKEN[code] !== 1) { |
| if (code !== 47/* '/' */ || i === 0) |
| return; |
| break; |
| } |
| } |
| // Check for type without subtype |
| if (i === str.length) |
| return; |
| |
| const type = str.slice(0, i).toLowerCase(); |
| |
| // Parse subtype |
| const subtypeStart = ++i; |
| for (; i < str.length; ++i) { |
| const code = str.charCodeAt(i); |
| if (TOKEN[code] !== 1) { |
| // Make sure we have a subtype |
| if (i === subtypeStart) |
| return; |
| |
| if (parseContentTypeParams(str, i, params) === undefined) |
| return; |
| break; |
| } |
| } |
| // Make sure we have a subtype |
| if (i === subtypeStart) |
| return; |
| |
| const subtype = str.slice(subtypeStart, i).toLowerCase(); |
| |
| return { type, subtype, params }; |
| } |
| |
| function parseContentTypeParams(str, i, params) { |
| while (i < str.length) { |
| // Consume whitespace |
| for (; i < str.length; ++i) { |
| const code = str.charCodeAt(i); |
| if (code !== 32/* ' ' */ && code !== 9/* '\t' */) |
| break; |
| } |
| |
| // Ended on whitespace |
| if (i === str.length) |
| break; |
| |
| // Check for malformed parameter |
| if (str.charCodeAt(i++) !== 59/* ';' */) |
| return; |
| |
| // Consume whitespace |
| for (; i < str.length; ++i) { |
| const code = str.charCodeAt(i); |
| if (code !== 32/* ' ' */ && code !== 9/* '\t' */) |
| break; |
| } |
| |
| // Ended on whitespace (malformed) |
| if (i === str.length) |
| return; |
| |
| let name; |
| const nameStart = i; |
| // Parse parameter name |
| for (; i < str.length; ++i) { |
| const code = str.charCodeAt(i); |
| if (TOKEN[code] !== 1) { |
| if (code !== 61/* '=' */) |
| return; |
| break; |
| } |
| } |
| |
| // No value (malformed) |
| if (i === str.length) |
| return; |
| |
| name = str.slice(nameStart, i); |
| ++i; // Skip over '=' |
| |
| // No value (malformed) |
| if (i === str.length) |
| return; |
| |
| let value = ''; |
| let valueStart; |
| if (str.charCodeAt(i) === 34/* '"' */) { |
| valueStart = ++i; |
| let escaping = false; |
| // Parse quoted value |
| for (; i < str.length; ++i) { |
| const code = str.charCodeAt(i); |
| if (code === 92/* '\\' */) { |
| if (escaping) { |
| valueStart = i; |
| escaping = false; |
| } else { |
| value += str.slice(valueStart, i); |
| escaping = true; |
| } |
| continue; |
| } |
| if (code === 34/* '"' */) { |
| if (escaping) { |
| valueStart = i; |
| escaping = false; |
| continue; |
| } |
| value += str.slice(valueStart, i); |
| break; |
| } |
| if (escaping) { |
| valueStart = i - 1; |
| escaping = false; |
| } |
| // Invalid unescaped quoted character (malformed) |
| if (QDTEXT[code] !== 1) |
| return; |
| } |
| |
| // No end quote (malformed) |
| if (i === str.length) |
| return; |
| |
| ++i; // Skip over double quote |
| } else { |
| valueStart = i; |
| // Parse unquoted value |
| for (; i < str.length; ++i) { |
| const code = str.charCodeAt(i); |
| if (TOKEN[code] !== 1) { |
| // No value (malformed) |
| if (i === valueStart) |
| return; |
| break; |
| } |
| } |
| value = str.slice(valueStart, i); |
| } |
| |
| name = name.toLowerCase(); |
| if (params[name] === undefined) |
| params[name] = value; |
| } |
| |
| return params; |
| } |
| |
| function parseDisposition(str, defDecoder) { |
| if (str.length === 0) |
| return; |
| |
| const params = Object.create(null); |
| let i = 0; |
| |
| for (; i < str.length; ++i) { |
| const code = str.charCodeAt(i); |
| if (TOKEN[code] !== 1) { |
| if (parseDispositionParams(str, i, params, defDecoder) === undefined) |
| return; |
| break; |
| } |
| } |
| |
| const type = str.slice(0, i).toLowerCase(); |
| |
| return { type, params }; |
| } |
| |
| function parseDispositionParams(str, i, params, defDecoder) { |
| while (i < str.length) { |
| // Consume whitespace |
| for (; i < str.length; ++i) { |
| const code = str.charCodeAt(i); |
| if (code !== 32/* ' ' */ && code !== 9/* '\t' */) |
| break; |
| } |
| |
| // Ended on whitespace |
| if (i === str.length) |
| break; |
| |
| // Check for malformed parameter |
| if (str.charCodeAt(i++) !== 59/* ';' */) |
| return; |
| |
| // Consume whitespace |
| for (; i < str.length; ++i) { |
| const code = str.charCodeAt(i); |
| if (code !== 32/* ' ' */ && code !== 9/* '\t' */) |
| break; |
| } |
| |
| // Ended on whitespace (malformed) |
| if (i === str.length) |
| return; |
| |
| let name; |
| const nameStart = i; |
| // Parse parameter name |
| for (; i < str.length; ++i) { |
| const code = str.charCodeAt(i); |
| if (TOKEN[code] !== 1) { |
| if (code === 61/* '=' */) |
| break; |
| return; |
| } |
| } |
| |
| // No value (malformed) |
| if (i === str.length) |
| return; |
| |
| let value = ''; |
| let valueStart; |
| let charset; |
| //~ let lang; |
| name = str.slice(nameStart, i); |
| if (name.charCodeAt(name.length - 1) === 42/* '*' */) { |
| // Extended value |
| |
| const charsetStart = ++i; |
| // Parse charset name |
| for (; i < str.length; ++i) { |
| const code = str.charCodeAt(i); |
| if (CHARSET[code] !== 1) { |
| if (code !== 39/* '\'' */) |
| return; |
| break; |
| } |
| } |
| |
| // Incomplete charset (malformed) |
| if (i === str.length) |
| return; |
| |
| charset = str.slice(charsetStart, i); |
| ++i; // Skip over the '\'' |
| |
| //~ const langStart = ++i; |
| // Parse language name |
| for (; i < str.length; ++i) { |
| const code = str.charCodeAt(i); |
| if (code === 39/* '\'' */) |
| break; |
| } |
| |
| // Incomplete language (malformed) |
| if (i === str.length) |
| return; |
| |
| //~ lang = str.slice(langStart, i); |
| ++i; // Skip over the '\'' |
| |
| // No value (malformed) |
| if (i === str.length) |
| return; |
| |
| valueStart = i; |
| |
| let encode = 0; |
| // Parse value |
| for (; i < str.length; ++i) { |
| const code = str.charCodeAt(i); |
| if (EXTENDED_VALUE[code] !== 1) { |
| if (code === 37/* '%' */) { |
| let hexUpper; |
| let hexLower; |
| if (i + 2 < str.length |
| && (hexUpper = HEX_VALUES[str.charCodeAt(i + 1)]) !== -1 |
| && (hexLower = HEX_VALUES[str.charCodeAt(i + 2)]) !== -1) { |
| const byteVal = (hexUpper << 4) + hexLower; |
| value += str.slice(valueStart, i); |
| value += String.fromCharCode(byteVal); |
| i += 2; |
| valueStart = i + 1; |
| if (byteVal >= 128) |
| encode = 2; |
| else if (encode === 0) |
| encode = 1; |
| continue; |
| } |
| // '%' disallowed in non-percent encoded contexts (malformed) |
| return; |
| } |
| break; |
| } |
| } |
| |
| value += str.slice(valueStart, i); |
| value = convertToUTF8(value, charset, encode); |
| if (value === undefined) |
| return; |
| } else { |
| // Non-extended value |
| |
| ++i; // Skip over '=' |
| |
| // No value (malformed) |
| if (i === str.length) |
| return; |
| |
| if (str.charCodeAt(i) === 34/* '"' */) { |
| valueStart = ++i; |
| let escaping = false; |
| // Parse quoted value |
| for (; i < str.length; ++i) { |
| const code = str.charCodeAt(i); |
| if (code === 92/* '\\' */) { |
| if (escaping) { |
| valueStart = i; |
| escaping = false; |
| } else { |
| value += str.slice(valueStart, i); |
| escaping = true; |
| } |
| continue; |
| } |
| if (code === 34/* '"' */) { |
| if (escaping) { |
| valueStart = i; |
| escaping = false; |
| continue; |
| } |
| value += str.slice(valueStart, i); |
| break; |
| } |
| if (escaping) { |
| valueStart = i - 1; |
| escaping = false; |
| } |
| // Invalid unescaped quoted character (malformed) |
| if (QDTEXT[code] !== 1) |
| return; |
| } |
| |
| // No end quote (malformed) |
| if (i === str.length) |
| return; |
| |
| ++i; // Skip over double quote |
| } else { |
| valueStart = i; |
| // Parse unquoted value |
| for (; i < str.length; ++i) { |
| const code = str.charCodeAt(i); |
| if (TOKEN[code] !== 1) { |
| // No value (malformed) |
| if (i === valueStart) |
| return; |
| break; |
| } |
| } |
| value = str.slice(valueStart, i); |
| } |
| |
| value = defDecoder(value, 2); |
| if (value === undefined) |
| return; |
| } |
| |
| name = name.toLowerCase(); |
| if (params[name] === undefined) |
| params[name] = value; |
| } |
| |
| return params; |
| } |
| |
| function getDecoder(charset) { |
| let lc; |
| while (true) { |
| switch (charset) { |
| case 'utf-8': |
| case 'utf8': |
| return decoders.utf8; |
| case 'latin1': |
| case 'ascii': // TODO: Make these a separate, strict decoder? |
| case 'us-ascii': |
| case 'iso-8859-1': |
| case 'iso8859-1': |
| case 'iso88591': |
| case 'iso_8859-1': |
| case 'windows-1252': |
| case 'iso_8859-1:1987': |
| case 'cp1252': |
| case 'x-cp1252': |
| return decoders.latin1; |
| case 'utf16le': |
| case 'utf-16le': |
| case 'ucs2': |
| case 'ucs-2': |
| return decoders.utf16le; |
| case 'base64': |
| return decoders.base64; |
| default: |
| if (lc === undefined) { |
| lc = true; |
| charset = charset.toLowerCase(); |
| continue; |
| } |
| return decoders.other.bind(charset); |
| } |
| } |
| } |
| |
| const decoders = { |
| utf8: (data, hint) => { |
| if (data.length === 0) |
| return ''; |
| if (typeof data === 'string') { |
| // If `data` never had any percent-encoded bytes or never had any that |
| // were outside of the ASCII range, then we can safely just return the |
| // input since UTF-8 is ASCII compatible |
| if (hint < 2) |
| return data; |
| |
| data = Buffer.from(data, 'latin1'); |
| } |
| return data.utf8Slice(0, data.length); |
| }, |
| |
| latin1: (data, hint) => { |
| if (data.length === 0) |
| return ''; |
| if (typeof data === 'string') |
| return data; |
| return data.latin1Slice(0, data.length); |
| }, |
| |
| utf16le: (data, hint) => { |
| if (data.length === 0) |
| return ''; |
| if (typeof data === 'string') |
| data = Buffer.from(data, 'latin1'); |
| return data.ucs2Slice(0, data.length); |
| }, |
| |
| base64: (data, hint) => { |
| if (data.length === 0) |
| return ''; |
| if (typeof data === 'string') |
| data = Buffer.from(data, 'latin1'); |
| return data.base64Slice(0, data.length); |
| }, |
| |
| other: (data, hint) => { |
| if (data.length === 0) |
| return ''; |
| if (typeof data === 'string') |
| data = Buffer.from(data, 'latin1'); |
| try { |
| const decoder = new TextDecoder(this); |
| return decoder.decode(data); |
| } catch {} |
| }, |
| }; |
| |
| function convertToUTF8(data, charset, hint) { |
| const decode = getDecoder(charset); |
| if (decode) |
| return decode(data, hint); |
| } |
| |
| function basename(path) { |
| if (typeof path !== 'string') |
| return ''; |
| for (let i = path.length - 1; i >= 0; --i) { |
| switch (path.charCodeAt(i)) { |
| case 0x2F: // '/' |
| case 0x5C: // '\' |
| path = path.slice(i + 1); |
| return (path === '..' || path === '.' ? '' : path); |
| } |
| } |
| return (path === '..' || path === '.' ? '' : path); |
| } |
| |
| const TOKEN = [ |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 1, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, |
| 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| ]; |
| |
| const QDTEXT = [ |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| ]; |
| |
| const CHARSET = [ |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 1, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 1, 0, 0, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, |
| 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| ]; |
| |
| const EXTENDED_VALUE = [ |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 1, 0, 1, 1, 0, 1, 0, 0, 0, 0, 1, 0, 1, 1, 0, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, |
| 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, |
| 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
| ]; |
| |
| /* eslint-disable no-multi-spaces */ |
| const HEX_VALUES = [ |
| -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1, -1, -1, -1, |
| -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, |
| ]; |
| /* eslint-enable no-multi-spaces */ |
| |
| module.exports = { |
| basename, |
| convertToUTF8, |
| getDecoder, |
| parseContentType, |
| parseDisposition, |
| }; |
