From 726b81b19251674e149ccfbb1abacbd837fc6db0 Mon Sep 17 00:00:00 2001 From: LinuxWizard42 Date: Wed, 12 Oct 2022 23:08:57 +0300 Subject: Removed files that should not have been included in git --- node_modules/yauzl/index.js | 796 -------------------------------------------- 1 file changed, 796 deletions(-) delete mode 100644 node_modules/yauzl/index.js (limited to 'node_modules/yauzl/index.js') diff --git a/node_modules/yauzl/index.js b/node_modules/yauzl/index.js deleted file mode 100644 index cf5d70d..0000000 --- a/node_modules/yauzl/index.js +++ /dev/null @@ -1,796 +0,0 @@ -var fs = require("fs"); -var zlib = require("zlib"); -var fd_slicer = require("fd-slicer"); -var crc32 = require("buffer-crc32"); -var util = require("util"); -var EventEmitter = require("events").EventEmitter; -var Transform = require("stream").Transform; -var PassThrough = require("stream").PassThrough; -var Writable = require("stream").Writable; - -exports.open = open; -exports.fromFd = fromFd; -exports.fromBuffer = fromBuffer; -exports.fromRandomAccessReader = fromRandomAccessReader; -exports.dosDateTimeToDate = dosDateTimeToDate; -exports.validateFileName = validateFileName; -exports.ZipFile = ZipFile; -exports.Entry = Entry; -exports.RandomAccessReader = RandomAccessReader; - -function open(path, options, callback) { - if (typeof options === "function") { - callback = options; - options = null; - } - if (options == null) options = {}; - if (options.autoClose == null) options.autoClose = true; - if (options.lazyEntries == null) options.lazyEntries = false; - if (options.decodeStrings == null) options.decodeStrings = true; - if (options.validateEntrySizes == null) options.validateEntrySizes = true; - if (options.strictFileNames == null) options.strictFileNames = false; - if (callback == null) callback = defaultCallback; - fs.open(path, "r", function(err, fd) { - if (err) return callback(err); - fromFd(fd, options, function(err, zipfile) { - if (err) fs.close(fd, defaultCallback); - callback(err, zipfile); - }); - }); -} - -function fromFd(fd, options, callback) { - if (typeof options === "function") { - callback = options; - options = null; - } - if (options == null) options = {}; - if (options.autoClose == null) options.autoClose = false; - if (options.lazyEntries == null) options.lazyEntries = false; - if (options.decodeStrings == null) options.decodeStrings = true; - if (options.validateEntrySizes == null) options.validateEntrySizes = true; - if (options.strictFileNames == null) options.strictFileNames = false; - if (callback == null) callback = defaultCallback; - fs.fstat(fd, function(err, stats) { - if (err) return callback(err); - var reader = fd_slicer.createFromFd(fd, {autoClose: true}); - fromRandomAccessReader(reader, stats.size, options, callback); - }); -} - -function fromBuffer(buffer, options, callback) { - if (typeof options === "function") { - callback = options; - options = null; - } - if (options == null) options = {}; - options.autoClose = false; - if (options.lazyEntries == null) options.lazyEntries = false; - if (options.decodeStrings == null) options.decodeStrings = true; - if (options.validateEntrySizes == null) options.validateEntrySizes = true; - if (options.strictFileNames == null) options.strictFileNames = false; - // limit the max chunk size. see https://github.com/thejoshwolfe/yauzl/issues/87 - var reader = fd_slicer.createFromBuffer(buffer, {maxChunkSize: 0x10000}); - fromRandomAccessReader(reader, buffer.length, options, callback); -} - -function fromRandomAccessReader(reader, totalSize, options, callback) { - if (typeof options === "function") { - callback = options; - options = null; - } - if (options == null) options = {}; - if (options.autoClose == null) options.autoClose = true; - if (options.lazyEntries == null) options.lazyEntries = false; - if (options.decodeStrings == null) options.decodeStrings = true; - var decodeStrings = !!options.decodeStrings; - if (options.validateEntrySizes == null) options.validateEntrySizes = true; - if (options.strictFileNames == null) options.strictFileNames = false; - if (callback == null) callback = defaultCallback; - if (typeof totalSize !== "number") throw new Error("expected totalSize parameter to be a number"); - if (totalSize > Number.MAX_SAFE_INTEGER) { - throw new Error("zip file too large. only file sizes up to 2^52 are supported due to JavaScript's Number type being an IEEE 754 double."); - } - - // the matching unref() call is in zipfile.close() - reader.ref(); - - // eocdr means End of Central Directory Record. - // search backwards for the eocdr signature. - // the last field of the eocdr is a variable-length comment. - // the comment size is encoded in a 2-byte field in the eocdr, which we can't find without trudging backwards through the comment to find it. - // as a consequence of this design decision, it's possible to have ambiguous zip file metadata if a coherent eocdr was in the comment. - // we search backwards for a eocdr signature, and hope that whoever made the zip file was smart enough to forbid the eocdr signature in the comment. - var eocdrWithoutCommentSize = 22; - var maxCommentSize = 0xffff; // 2-byte size - var bufferSize = Math.min(eocdrWithoutCommentSize + maxCommentSize, totalSize); - var buffer = newBuffer(bufferSize); - var bufferReadStart = totalSize - buffer.length; - readAndAssertNoEof(reader, buffer, 0, bufferSize, bufferReadStart, function(err) { - if (err) return callback(err); - for (var i = bufferSize - eocdrWithoutCommentSize; i >= 0; i -= 1) { - if (buffer.readUInt32LE(i) !== 0x06054b50) continue; - // found eocdr - var eocdrBuffer = buffer.slice(i); - - // 0 - End of central directory signature = 0x06054b50 - // 4 - Number of this disk - var diskNumber = eocdrBuffer.readUInt16LE(4); - if (diskNumber !== 0) { - return callback(new Error("multi-disk zip files are not supported: found disk number: " + diskNumber)); - } - // 6 - Disk where central directory starts - // 8 - Number of central directory records on this disk - // 10 - Total number of central directory records - var entryCount = eocdrBuffer.readUInt16LE(10); - // 12 - Size of central directory (bytes) - // 16 - Offset of start of central directory, relative to start of archive - var centralDirectoryOffset = eocdrBuffer.readUInt32LE(16); - // 20 - Comment length - var commentLength = eocdrBuffer.readUInt16LE(20); - var expectedCommentLength = eocdrBuffer.length - eocdrWithoutCommentSize; - if (commentLength !== expectedCommentLength) { - return callback(new Error("invalid comment length. expected: " + expectedCommentLength + ". found: " + commentLength)); - } - // 22 - Comment - // the encoding is always cp437. - var comment = decodeStrings ? decodeBuffer(eocdrBuffer, 22, eocdrBuffer.length, false) - : eocdrBuffer.slice(22); - - if (!(entryCount === 0xffff || centralDirectoryOffset === 0xffffffff)) { - return callback(null, new ZipFile(reader, centralDirectoryOffset, totalSize, entryCount, comment, options.autoClose, options.lazyEntries, decodeStrings, options.validateEntrySizes, options.strictFileNames)); - } - - // ZIP64 format - - // ZIP64 Zip64 end of central directory locator - var zip64EocdlBuffer = newBuffer(20); - var zip64EocdlOffset = bufferReadStart + i - zip64EocdlBuffer.length; - readAndAssertNoEof(reader, zip64EocdlBuffer, 0, zip64EocdlBuffer.length, zip64EocdlOffset, function(err) { - if (err) return callback(err); - - // 0 - zip64 end of central dir locator signature = 0x07064b50 - if (zip64EocdlBuffer.readUInt32LE(0) !== 0x07064b50) { - return callback(new Error("invalid zip64 end of central directory locator signature")); - } - // 4 - number of the disk with the start of the zip64 end of central directory - // 8 - relative offset of the zip64 end of central directory record - var zip64EocdrOffset = readUInt64LE(zip64EocdlBuffer, 8); - // 16 - total number of disks - - // ZIP64 end of central directory record - var zip64EocdrBuffer = newBuffer(56); - readAndAssertNoEof(reader, zip64EocdrBuffer, 0, zip64EocdrBuffer.length, zip64EocdrOffset, function(err) { - if (err) return callback(err); - - // 0 - zip64 end of central dir signature 4 bytes (0x06064b50) - if (zip64EocdrBuffer.readUInt32LE(0) !== 0x06064b50) { - return callback(new Error("invalid zip64 end of central directory record signature")); - } - // 4 - size of zip64 end of central directory record 8 bytes - // 12 - version made by 2 bytes - // 14 - version needed to extract 2 bytes - // 16 - number of this disk 4 bytes - // 20 - number of the disk with the start of the central directory 4 bytes - // 24 - total number of entries in the central directory on this disk 8 bytes - // 32 - total number of entries in the central directory 8 bytes - entryCount = readUInt64LE(zip64EocdrBuffer, 32); - // 40 - size of the central directory 8 bytes - // 48 - offset of start of central directory with respect to the starting disk number 8 bytes - centralDirectoryOffset = readUInt64LE(zip64EocdrBuffer, 48); - // 56 - zip64 extensible data sector (variable size) - return callback(null, new ZipFile(reader, centralDirectoryOffset, totalSize, entryCount, comment, options.autoClose, options.lazyEntries, decodeStrings, options.validateEntrySizes, options.strictFileNames)); - }); - }); - return; - } - callback(new Error("end of central directory record signature not found")); - }); -} - -util.inherits(ZipFile, EventEmitter); -function ZipFile(reader, centralDirectoryOffset, fileSize, entryCount, comment, autoClose, lazyEntries, decodeStrings, validateEntrySizes, strictFileNames) { - var self = this; - EventEmitter.call(self); - self.reader = reader; - // forward close events - self.reader.on("error", function(err) { - // error closing the fd - emitError(self, err); - }); - self.reader.once("close", function() { - self.emit("close"); - }); - self.readEntryCursor = centralDirectoryOffset; - self.fileSize = fileSize; - self.entryCount = entryCount; - self.comment = comment; - self.entriesRead = 0; - self.autoClose = !!autoClose; - self.lazyEntries = !!lazyEntries; - self.decodeStrings = !!decodeStrings; - self.validateEntrySizes = !!validateEntrySizes; - self.strictFileNames = !!strictFileNames; - self.isOpen = true; - self.emittedError = false; - - if (!self.lazyEntries) self._readEntry(); -} -ZipFile.prototype.close = function() { - if (!this.isOpen) return; - this.isOpen = false; - this.reader.unref(); -}; - -function emitErrorAndAutoClose(self, err) { - if (self.autoClose) self.close(); - emitError(self, err); -} -function emitError(self, err) { - if (self.emittedError) return; - self.emittedError = true; - self.emit("error", err); -} - -ZipFile.prototype.readEntry = function() { - if (!this.lazyEntries) throw new Error("readEntry() called without lazyEntries:true"); - this._readEntry(); -}; -ZipFile.prototype._readEntry = function() { - var self = this; - if (self.entryCount === self.entriesRead) { - // done with metadata - setImmediate(function() { - if (self.autoClose) self.close(); - if (self.emittedError) return; - self.emit("end"); - }); - return; - } - if (self.emittedError) return; - var buffer = newBuffer(46); - readAndAssertNoEof(self.reader, buffer, 0, buffer.length, self.readEntryCursor, function(err) { - if (err) return emitErrorAndAutoClose(self, err); - if (self.emittedError) return; - var entry = new Entry(); - // 0 - Central directory file header signature - var signature = buffer.readUInt32LE(0); - if (signature !== 0x02014b50) return emitErrorAndAutoClose(self, new Error("invalid central directory file header signature: 0x" + signature.toString(16))); - // 4 - Version made by - entry.versionMadeBy = buffer.readUInt16LE(4); - // 6 - Version needed to extract (minimum) - entry.versionNeededToExtract = buffer.readUInt16LE(6); - // 8 - General purpose bit flag - entry.generalPurposeBitFlag = buffer.readUInt16LE(8); - // 10 - Compression method - entry.compressionMethod = buffer.readUInt16LE(10); - // 12 - File last modification time - entry.lastModFileTime = buffer.readUInt16LE(12); - // 14 - File last modification date - entry.lastModFileDate = buffer.readUInt16LE(14); - // 16 - CRC-32 - entry.crc32 = buffer.readUInt32LE(16); - // 20 - Compressed size - entry.compressedSize = buffer.readUInt32LE(20); - // 24 - Uncompressed size - entry.uncompressedSize = buffer.readUInt32LE(24); - // 28 - File name length (n) - entry.fileNameLength = buffer.readUInt16LE(28); - // 30 - Extra field length (m) - entry.extraFieldLength = buffer.readUInt16LE(30); - // 32 - File comment length (k) - entry.fileCommentLength = buffer.readUInt16LE(32); - // 34 - Disk number where file starts - // 36 - Internal file attributes - entry.internalFileAttributes = buffer.readUInt16LE(36); - // 38 - External file attributes - entry.externalFileAttributes = buffer.readUInt32LE(38); - // 42 - Relative offset of local file header - entry.relativeOffsetOfLocalHeader = buffer.readUInt32LE(42); - - if (entry.generalPurposeBitFlag & 0x40) return emitErrorAndAutoClose(self, new Error("strong encryption is not supported")); - - self.readEntryCursor += 46; - - buffer = newBuffer(entry.fileNameLength + entry.extraFieldLength + entry.fileCommentLength); - readAndAssertNoEof(self.reader, buffer, 0, buffer.length, self.readEntryCursor, function(err) { - if (err) return emitErrorAndAutoClose(self, err); - if (self.emittedError) return; - // 46 - File name - var isUtf8 = (entry.generalPurposeBitFlag & 0x800) !== 0; - entry.fileName = self.decodeStrings ? decodeBuffer(buffer, 0, entry.fileNameLength, isUtf8) - : buffer.slice(0, entry.fileNameLength); - - // 46+n - Extra field - var fileCommentStart = entry.fileNameLength + entry.extraFieldLength; - var extraFieldBuffer = buffer.slice(entry.fileNameLength, fileCommentStart); - entry.extraFields = []; - var i = 0; - while (i < extraFieldBuffer.length - 3) { - var headerId = extraFieldBuffer.readUInt16LE(i + 0); - var dataSize = extraFieldBuffer.readUInt16LE(i + 2); - var dataStart = i + 4; - var dataEnd = dataStart + dataSize; - if (dataEnd > extraFieldBuffer.length) return emitErrorAndAutoClose(self, new Error("extra field length exceeds extra field buffer size")); - var dataBuffer = newBuffer(dataSize); - extraFieldBuffer.copy(dataBuffer, 0, dataStart, dataEnd); - entry.extraFields.push({ - id: headerId, - data: dataBuffer, - }); - i = dataEnd; - } - - // 46+n+m - File comment - entry.fileComment = self.decodeStrings ? decodeBuffer(buffer, fileCommentStart, fileCommentStart + entry.fileCommentLength, isUtf8) - : buffer.slice(fileCommentStart, fileCommentStart + entry.fileCommentLength); - // compatibility hack for https://github.com/thejoshwolfe/yauzl/issues/47 - entry.comment = entry.fileComment; - - self.readEntryCursor += buffer.length; - self.entriesRead += 1; - - if (entry.uncompressedSize === 0xffffffff || - entry.compressedSize === 0xffffffff || - entry.relativeOffsetOfLocalHeader === 0xffffffff) { - // ZIP64 format - // find the Zip64 Extended Information Extra Field - var zip64EiefBuffer = null; - for (var i = 0; i < entry.extraFields.length; i++) { - var extraField = entry.extraFields[i]; - if (extraField.id === 0x0001) { - zip64EiefBuffer = extraField.data; - break; - } - } - if (zip64EiefBuffer == null) { - return emitErrorAndAutoClose(self, new Error("expected zip64 extended information extra field")); - } - var index = 0; - // 0 - Original Size 8 bytes - if (entry.uncompressedSize === 0xffffffff) { - if (index + 8 > zip64EiefBuffer.length) { - return emitErrorAndAutoClose(self, new Error("zip64 extended information extra field does not include uncompressed size")); - } - entry.uncompressedSize = readUInt64LE(zip64EiefBuffer, index); - index += 8; - } - // 8 - Compressed Size 8 bytes - if (entry.compressedSize === 0xffffffff) { - if (index + 8 > zip64EiefBuffer.length) { - return emitErrorAndAutoClose(self, new Error("zip64 extended information extra field does not include compressed size")); - } - entry.compressedSize = readUInt64LE(zip64EiefBuffer, index); - index += 8; - } - // 16 - Relative Header Offset 8 bytes - if (entry.relativeOffsetOfLocalHeader === 0xffffffff) { - if (index + 8 > zip64EiefBuffer.length) { - return emitErrorAndAutoClose(self, new Error("zip64 extended information extra field does not include relative header offset")); - } - entry.relativeOffsetOfLocalHeader = readUInt64LE(zip64EiefBuffer, index); - index += 8; - } - // 24 - Disk Start Number 4 bytes - } - - // check for Info-ZIP Unicode Path Extra Field (0x7075) - // see https://github.com/thejoshwolfe/yauzl/issues/33 - if (self.decodeStrings) { - for (var i = 0; i < entry.extraFields.length; i++) { - var extraField = entry.extraFields[i]; - if (extraField.id === 0x7075) { - if (extraField.data.length < 6) { - // too short to be meaningful - continue; - } - // Version 1 byte version of this extra field, currently 1 - if (extraField.data.readUInt8(0) !== 1) { - // > Changes may not be backward compatible so this extra - // > field should not be used if the version is not recognized. - continue; - } - // NameCRC32 4 bytes File Name Field CRC32 Checksum - var oldNameCrc32 = extraField.data.readUInt32LE(1); - if (crc32.unsigned(buffer.slice(0, entry.fileNameLength)) !== oldNameCrc32) { - // > If the CRC check fails, this UTF-8 Path Extra Field should be - // > ignored and the File Name field in the header should be used instead. - continue; - } - // UnicodeName Variable UTF-8 version of the entry File Name - entry.fileName = decodeBuffer(extraField.data, 5, extraField.data.length, true); - break; - } - } - } - - // validate file size - if (self.validateEntrySizes && entry.compressionMethod === 0) { - var expectedCompressedSize = entry.uncompressedSize; - if (entry.isEncrypted()) { - // traditional encryption prefixes the file data with a header - expectedCompressedSize += 12; - } - if (entry.compressedSize !== expectedCompressedSize) { - var msg = "compressed/uncompressed size mismatch for stored file: " + entry.compressedSize + " != " + entry.uncompressedSize; - return emitErrorAndAutoClose(self, new Error(msg)); - } - } - - if (self.decodeStrings) { - if (!self.strictFileNames) { - // allow backslash - entry.fileName = entry.fileName.replace(/\\/g, "/"); - } - var errorMessage = validateFileName(entry.fileName, self.validateFileNameOptions); - if (errorMessage != null) return emitErrorAndAutoClose(self, new Error(errorMessage)); - } - self.emit("entry", entry); - - if (!self.lazyEntries) self._readEntry(); - }); - }); -}; - -ZipFile.prototype.openReadStream = function(entry, options, callback) { - var self = this; - // parameter validation - var relativeStart = 0; - var relativeEnd = entry.compressedSize; - if (callback == null) { - callback = options; - options = {}; - } else { - // validate options that the caller has no excuse to get wrong - if (options.decrypt != null) { - if (!entry.isEncrypted()) { - throw new Error("options.decrypt can only be specified for encrypted entries"); - } - if (options.decrypt !== false) throw new Error("invalid options.decrypt value: " + options.decrypt); - if (entry.isCompressed()) { - if (options.decompress !== false) throw new Error("entry is encrypted and compressed, and options.decompress !== false"); - } - } - if (options.decompress != null) { - if (!entry.isCompressed()) { - throw new Error("options.decompress can only be specified for compressed entries"); - } - if (!(options.decompress === false || options.decompress === true)) { - throw new Error("invalid options.decompress value: " + options.decompress); - } - } - if (options.start != null || options.end != null) { - if (entry.isCompressed() && options.decompress !== false) { - throw new Error("start/end range not allowed for compressed entry without options.decompress === false"); - } - if (entry.isEncrypted() && options.decrypt !== false) { - throw new Error("start/end range not allowed for encrypted entry without options.decrypt === false"); - } - } - if (options.start != null) { - relativeStart = options.start; - if (relativeStart < 0) throw new Error("options.start < 0"); - if (relativeStart > entry.compressedSize) throw new Error("options.start > entry.compressedSize"); - } - if (options.end != null) { - relativeEnd = options.end; - if (relativeEnd < 0) throw new Error("options.end < 0"); - if (relativeEnd > entry.compressedSize) throw new Error("options.end > entry.compressedSize"); - if (relativeEnd < relativeStart) throw new Error("options.end < options.start"); - } - } - // any further errors can either be caused by the zipfile, - // or were introduced in a minor version of yauzl, - // so should be passed to the client rather than thrown. - if (!self.isOpen) return callback(new Error("closed")); - if (entry.isEncrypted()) { - if (options.decrypt !== false) return callback(new Error("entry is encrypted, and options.decrypt !== false")); - } - // make sure we don't lose the fd before we open the actual read stream - self.reader.ref(); - var buffer = newBuffer(30); - readAndAssertNoEof(self.reader, buffer, 0, buffer.length, entry.relativeOffsetOfLocalHeader, function(err) { - try { - if (err) return callback(err); - // 0 - Local file header signature = 0x04034b50 - var signature = buffer.readUInt32LE(0); - if (signature !== 0x04034b50) { - return callback(new Error("invalid local file header signature: 0x" + signature.toString(16))); - } - // all this should be redundant - // 4 - Version needed to extract (minimum) - // 6 - General purpose bit flag - // 8 - Compression method - // 10 - File last modification time - // 12 - File last modification date - // 14 - CRC-32 - // 18 - Compressed size - // 22 - Uncompressed size - // 26 - File name length (n) - var fileNameLength = buffer.readUInt16LE(26); - // 28 - Extra field length (m) - var extraFieldLength = buffer.readUInt16LE(28); - // 30 - File name - // 30+n - Extra field - var localFileHeaderEnd = entry.relativeOffsetOfLocalHeader + buffer.length + fileNameLength + extraFieldLength; - var decompress; - if (entry.compressionMethod === 0) { - // 0 - The file is stored (no compression) - decompress = false; - } else if (entry.compressionMethod === 8) { - // 8 - The file is Deflated - decompress = options.decompress != null ? options.decompress : true; - } else { - return callback(new Error("unsupported compression method: " + entry.compressionMethod)); - } - var fileDataStart = localFileHeaderEnd; - var fileDataEnd = fileDataStart + entry.compressedSize; - if (entry.compressedSize !== 0) { - // bounds check now, because the read streams will probably not complain loud enough. - // since we're dealing with an unsigned offset plus an unsigned size, - // we only have 1 thing to check for. - if (fileDataEnd > self.fileSize) { - return callback(new Error("file data overflows file bounds: " + - fileDataStart + " + " + entry.compressedSize + " > " + self.fileSize)); - } - } - var readStream = self.reader.createReadStream({ - start: fileDataStart + relativeStart, - end: fileDataStart + relativeEnd, - }); - var endpointStream = readStream; - if (decompress) { - var destroyed = false; - var inflateFilter = zlib.createInflateRaw(); - readStream.on("error", function(err) { - // setImmediate here because errors can be emitted during the first call to pipe() - setImmediate(function() { - if (!destroyed) inflateFilter.emit("error", err); - }); - }); - readStream.pipe(inflateFilter); - - if (self.validateEntrySizes) { - endpointStream = new AssertByteCountStream(entry.uncompressedSize); - inflateFilter.on("error", function(err) { - // forward zlib errors to the client-visible stream - setImmediate(function() { - if (!destroyed) endpointStream.emit("error", err); - }); - }); - inflateFilter.pipe(endpointStream); - } else { - // the zlib filter is the client-visible stream - endpointStream = inflateFilter; - } - // this is part of yauzl's API, so implement this function on the client-visible stream - endpointStream.destroy = function() { - destroyed = true; - if (inflateFilter !== endpointStream) inflateFilter.unpipe(endpointStream); - readStream.unpipe(inflateFilter); - // TODO: the inflateFilter may cause a memory leak. see Issue #27. - readStream.destroy(); - }; - } - callback(null, endpointStream); - } finally { - self.reader.unref(); - } - }); -}; - -function Entry() { -} -Entry.prototype.getLastModDate = function() { - return dosDateTimeToDate(this.lastModFileDate, this.lastModFileTime); -}; -Entry.prototype.isEncrypted = function() { - return (this.generalPurposeBitFlag & 0x1) !== 0; -}; -Entry.prototype.isCompressed = function() { - return this.compressionMethod === 8; -}; - -function dosDateTimeToDate(date, time) { - var day = date & 0x1f; // 1-31 - var month = (date >> 5 & 0xf) - 1; // 1-12, 0-11 - var year = (date >> 9 & 0x7f) + 1980; // 0-128, 1980-2108 - - var millisecond = 0; - var second = (time & 0x1f) * 2; // 0-29, 0-58 (even numbers) - var minute = time >> 5 & 0x3f; // 0-59 - var hour = time >> 11 & 0x1f; // 0-23 - - return new Date(year, month, day, hour, minute, second, millisecond); -} - -function validateFileName(fileName) { - if (fileName.indexOf("\\") !== -1) { - return "invalid characters in fileName: " + fileName; - } - if (/^[a-zA-Z]:/.test(fileName) || /^\//.test(fileName)) { - return "absolute path: " + fileName; - } - if (fileName.split("/").indexOf("..") !== -1) { - return "invalid relative path: " + fileName; - } - // all good - return null; -} - -function readAndAssertNoEof(reader, buffer, offset, length, position, callback) { - if (length === 0) { - // fs.read will throw an out-of-bounds error if you try to read 0 bytes from a 0 byte file - return setImmediate(function() { callback(null, newBuffer(0)); }); - } - reader.read(buffer, offset, length, position, function(err, bytesRead) { - if (err) return callback(err); - if (bytesRead < length) { - return callback(new Error("unexpected EOF")); - } - callback(); - }); -} - -util.inherits(AssertByteCountStream, Transform); -function AssertByteCountStream(byteCount) { - Transform.call(this); - this.actualByteCount = 0; - this.expectedByteCount = byteCount; -} -AssertByteCountStream.prototype._transform = function(chunk, encoding, cb) { - this.actualByteCount += chunk.length; - if (this.actualByteCount > this.expectedByteCount) { - var msg = "too many bytes in the stream. expected " + this.expectedByteCount + ". got at least " + this.actualByteCount; - return cb(new Error(msg)); - } - cb(null, chunk); -}; -AssertByteCountStream.prototype._flush = function(cb) { - if (this.actualByteCount < this.expectedByteCount) { - var msg = "not enough bytes in the stream. expected " + this.expectedByteCount + ". got only " + this.actualByteCount; - return cb(new Error(msg)); - } - cb(); -}; - -util.inherits(RandomAccessReader, EventEmitter); -function RandomAccessReader() { - EventEmitter.call(this); - this.refCount = 0; -} -RandomAccessReader.prototype.ref = function() { - this.refCount += 1; -}; -RandomAccessReader.prototype.unref = function() { - var self = this; - self.refCount -= 1; - - if (self.refCount > 0) return; - if (self.refCount < 0) throw new Error("invalid unref"); - - self.close(onCloseDone); - - function onCloseDone(err) { - if (err) return self.emit('error', err); - self.emit('close'); - } -}; -RandomAccessReader.prototype.createReadStream = function(options) { - var start = options.start; - var end = options.end; - if (start === end) { - var emptyStream = new PassThrough(); - setImmediate(function() { - emptyStream.end(); - }); - return emptyStream; - } - var stream = this._readStreamForRange(start, end); - - var destroyed = false; - var refUnrefFilter = new RefUnrefFilter(this); - stream.on("error", function(err) { - setImmediate(function() { - if (!destroyed) refUnrefFilter.emit("error", err); - }); - }); - refUnrefFilter.destroy = function() { - stream.unpipe(refUnrefFilter); - refUnrefFilter.unref(); - stream.destroy(); - }; - - var byteCounter = new AssertByteCountStream(end - start); - refUnrefFilter.on("error", function(err) { - setImmediate(function() { - if (!destroyed) byteCounter.emit("error", err); - }); - }); - byteCounter.destroy = function() { - destroyed = true; - refUnrefFilter.unpipe(byteCounter); - refUnrefFilter.destroy(); - }; - - return stream.pipe(refUnrefFilter).pipe(byteCounter); -}; -RandomAccessReader.prototype._readStreamForRange = function(start, end) { - throw new Error("not implemented"); -}; -RandomAccessReader.prototype.read = function(buffer, offset, length, position, callback) { - var readStream = this.createReadStream({start: position, end: position + length}); - var writeStream = new Writable(); - var written = 0; - writeStream._write = function(chunk, encoding, cb) { - chunk.copy(buffer, offset + written, 0, chunk.length); - written += chunk.length; - cb(); - }; - writeStream.on("finish", callback); - readStream.on("error", function(error) { - callback(error); - }); - readStream.pipe(writeStream); -}; -RandomAccessReader.prototype.close = function(callback) { - setImmediate(callback); -}; - -util.inherits(RefUnrefFilter, PassThrough); -function RefUnrefFilter(context) { - PassThrough.call(this); - this.context = context; - this.context.ref(); - this.unreffedYet = false; -} -RefUnrefFilter.prototype._flush = function(cb) { - this.unref(); - cb(); -}; -RefUnrefFilter.prototype.unref = function(cb) { - if (this.unreffedYet) return; - this.unreffedYet = true; - this.context.unref(); -}; - -var cp437 = '\u0000☺☻♥♦♣♠•◘○◙♂♀♪♫☼►◄↕‼¶§▬↨↑↓→←∟↔▲▼ !"#$%&\'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~⌂ÇüéâäàåçêëèïîìÄÅÉæÆôöòûùÿÖÜ¢£¥₧ƒáíóúñѪº¿⌐¬½¼¡«»░▒▓│┤╡╢╖╕╣║╗╝╜╛┐└┴┬├─┼╞╟╚╔╩╦╠═╬╧╨╤╥╙╘╒╓╫╪┘┌█▄▌▐▀αßΓπΣσµτΦΘΩδ∞φε∩≡±≥≤⌠⌡÷≈°∙·√ⁿ²■ '; -function decodeBuffer(buffer, start, end, isUtf8) { - if (isUtf8) { - return buffer.toString("utf8", start, end); - } else { - var result = ""; - for (var i = start; i < end; i++) { - result += cp437[buffer[i]]; - } - return result; - } -} - -function readUInt64LE(buffer, offset) { - // there is no native function for this, because we can't actually store 64-bit integers precisely. - // after 53 bits, JavaScript's Number type (IEEE 754 double) can't store individual integers anymore. - // but since 53 bits is a whole lot more than 32 bits, we do our best anyway. - var lower32 = buffer.readUInt32LE(offset); - var upper32 = buffer.readUInt32LE(offset + 4); - // we can't use bitshifting here, because JavaScript bitshifting only works on 32-bit integers. - return upper32 * 0x100000000 + lower32; - // as long as we're bounds checking the result of this function against the total file size, - // we'll catch any overflow errors, because we already made sure the total file size was within reason. -} - -// Node 10 deprecated new Buffer(). -var newBuffer; -if (typeof Buffer.allocUnsafe === "function") { - newBuffer = function(len) { - return Buffer.allocUnsafe(len); - }; -} else { - newBuffer = function(len) { - return new Buffer(len); - }; -} - -function defaultCallback(err) { - if (err) throw err; -} -- cgit v1.2.3-86-g962b