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C++ ZLInputStream::offset方法代码示例

本文整理汇总了C++中ZLInputStream::offset方法的典型用法代码示例。如果您正苦于以下问题：C++ ZLInputStream::offset方法的具体用法？C++ ZLInputStream::offset怎么用？C++ ZLInputStream::offset使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类ZLInputStream的用法示例。


在下文中一共展示了ZLInputStream::offset方法的7个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: readFrom

bool ZLZipHeader::readFrom(ZLInputStream &stream) {
	size_t startOffset = stream.offset();
	Signature = readLong(stream);
	switch (Signature) {
		default:
			return false;
		case SignatureLocalFile:
			Version = readShort(stream);
			Flags = readShort(stream);
			CompressionMethod = readShort(stream);
			ModificationTime = readShort(stream);
			ModificationDate = readShort(stream);
			CRC32 = readLong(stream);
			CompressedSize = readLong(stream);
			UncompressedSize = readLong(stream);
			if (CompressionMethod == 0 && CompressedSize != UncompressedSize) {
				ZLLogger::Instance().println("zip", "Different compressed & uncompressed size for stored entry; the uncompressed one will be used.");
				CompressedSize = UncompressedSize;
			}
			NameLength = readShort(stream);
			ExtraLength = readShort(stream);
			return stream.offset() == startOffset + 30 && NameLength != 0;
		case SignatureData:
			CRC32 = readLong(stream);
			CompressedSize = readLong(stream);
			UncompressedSize = readLong(stream);
			NameLength = 0;
			ExtraLength = 0;
			return stream.offset() == startOffset + 16;
	}
}
开发者ID:raghavkc，项目名称:fbreaderj2，代码行数:31，代码来源:ZLZipHeader.cpp

示例2: readFrom

bool ZLZipHeader::readFrom(ZLInputStream &stream) {
	size_t startOffset = stream.offset();
	Signature = readLong(stream);
	Version = readShort(stream);
	Flags = readShort(stream);
	CompressionMethod = readShort(stream);
	ModificationTime = readShort(stream);
	ModificationDate = readShort(stream);
	CRC32 = readLong(stream);
	CompressedSize = readLong(stream);
	UncompressedSize = readLong(stream);
	NameLength = readShort(stream);
	ExtraLength = readShort(stream);
	return (Signature == 0x04034B50) && (stream.offset() == startOffset + 30) && (NameLength != 0);
}
开发者ID:xufooo，项目名称:fbreader-e2-test，代码行数:15，代码来源:ZLZipHeader.cpp

示例3: entryName

ZLZipEntryCache::ZLZipEntryCache(const std::string &containerName, ZLInputStream &containerStream) : myContainerName(containerName) {
	//ZLLogger::Instance().println("ZipEntryCache", "creating cache for " + containerName);
	myLastModifiedTime = ZLFile(containerName).lastModified();
	if (!containerStream.open()) {
		return;
	}

	ZLZipHeader header;
	while (header.readFrom(containerStream)) {
		Info *infoPtr = 0;
		if (header.Signature == (unsigned long)ZLZipHeader::SignatureLocalFile) {
			std::string entryName(header.NameLength, '\0');
			if ((unsigned int)containerStream.read((char*)entryName.data(), header.NameLength) == header.NameLength) {
				entryName = AndroidUtil::convertNonUtfString(entryName);
				Info &info = myInfoMap[entryName];
				info.Offset = containerStream.offset() + header.ExtraLength;
				info.CompressionMethod = header.CompressionMethod;
				info.CompressedSize = header.CompressedSize;
				info.UncompressedSize = header.UncompressedSize;
				infoPtr = &info;
			}
		}
		ZLZipHeader::skipEntry(containerStream, header);
		if (infoPtr != 0) {
			infoPtr->UncompressedSize = header.UncompressedSize;
		}
	}
	containerStream.close();
}
开发者ID:ALEXGUOQ，项目名称:FBReaderJ，代码行数:29，代码来源:ZLZipEntryCache.cpp

示例4: entryName

ZLZipEntryCache::ZLZipEntryCache(ZLInputStream &baseStream) {
	if (!baseStream.open()) {
		return;
	}

	ZLZipHeader header;
	while (header.readFrom(baseStream)) {
		Info *infoPtr = 0;
		if (header.Signature == ZLZipHeader::SignatureLocalFile) {
			std::string entryName(header.NameLength, '\0');
			if ((unsigned int)baseStream.read((char*)entryName.data(), header.NameLength) == header.NameLength) {
				Info &info = myInfoMap[entryName];
				info.Offset = baseStream.offset() + header.ExtraLength;
				info.CompressionMethod = header.CompressionMethod;
				info.CompressedSize = header.CompressedSize;
				info.UncompressedSize = header.UncompressedSize;
				infoPtr = &info;
			}
		}
		ZLZipHeader::skipEntry(baseStream, header);
		if (infoPtr != 0) {
			infoPtr->UncompressedSize = header.UncompressedSize;
		}
	}
	baseStream.close();
}
开发者ID:ALEXGUOQ，项目名称:FBReader，代码行数:26，代码来源:ZLZipEntryCache.cpp

示例5: read

bool ZLTarHeader::read(ZLInputStream &stream) {
	size_t startOffset = stream.offset();

	char fileName[101];
	stream.read(fileName, 100);
	if (fileName[0] == '\0') {
		return false;
	}
	fileName[100] = '\0';
	if (Name.empty()) {
		Name = fileName;
	}

	stream.seek(24, false);
	
	char fileSizeString[12];
	stream.read(fileSizeString, 12);
	Size = 0;
	for (int i = 0; i < 12; ++i) {
		if (!isdigit(fileSizeString[i])) {
			break;
		}
		Size *= 8;
		Size += fileSizeString[i] - '0';
	}
	
	stream.seek(20, false);
	char linkFlag;
	stream.read(&linkFlag, 1);
	
	IsRegularFile = (linkFlag == '\0') || (linkFlag == '0');

	stream.seek(355, false);
	
	if (((linkFlag == 'L') || (linkFlag == 'K')) && (Name == "././@LongLink") && (Size < 10240)) {
		Name.erase();
		Name.append(Size - 1, '\0');
		stream.read(const_cast<char*>(Name.data()), Size - 1);
		const int skip = 512 - (Size & 0x1ff);
		stream.seek(skip + 1, false);
		return (stream.offset() == startOffset + Size + skip + 512) && read(stream);
	} else {
		DataOffset = stream.offset();
		return DataOffset == startOffset + 512;
	}
}
开发者ID:maxyz，项目名称:FBReader，代码行数:46，代码来源:ZLTar.cpp

示例6: readFrom

bool ZLZipHeader::readFrom(ZLInputStream &stream) {
	std::size_t startOffset = stream.offset();
	Signature = readLong(stream);
	switch (Signature) {
		default:
			return stream.offset() == startOffset + 4;
		case SignatureCentralDirectory:
		{
			Version = readLong(stream);
			Flags = readShort(stream);
			CompressionMethod = readShort(stream);
			ModificationTime = readShort(stream);
			ModificationDate = readShort(stream);
			CRC32 = readLong(stream);
			CompressedSize = readLong(stream);
			UncompressedSize = readLong(stream);
			if (CompressionMethod == 0 && CompressedSize != UncompressedSize) {
				ZLLogger::Instance().println("zip", "Different compressed & uncompressed size for stored entry; the uncompressed one will be used.");
				CompressedSize = UncompressedSize;
			}
			NameLength = readShort(stream);
			ExtraLength = readShort(stream);
			const unsigned short toSkip = readShort(stream);
			stream.seek(12 + NameLength + ExtraLength + toSkip, false);
			return stream.offset() == startOffset + 42 + NameLength + ExtraLength + toSkip;
		}
		case SignatureLocalFile:
			Version = readShort(stream);
			Flags = readShort(stream);
			CompressionMethod = readShort(stream);
			ModificationTime = readShort(stream);
			ModificationDate = readShort(stream);
			CRC32 = readLong(stream);
			CompressedSize = readLong(stream);
			UncompressedSize = readLong(stream);
			if (CompressionMethod == 0 && CompressedSize != UncompressedSize) {
				ZLLogger::Instance().println("zip", "Different compressed & uncompressed size for stored entry; the uncompressed one will be used.");
				CompressedSize = UncompressedSize;
			}
			NameLength = readShort(stream);
			ExtraLength = readShort(stream);
			return stream.offset() == startOffset + 30 && NameLength != 0;
		case SignatureEndOfCentralDirectory:
		{
			stream.seek(16, false);
			const unsigned short toSkip = readShort(stream);
			stream.seek(toSkip, false);
			UncompressedSize = 0;
			return stream.offset() == startOffset + 18 + toSkip;
		}
		case SignatureData:
			CRC32 = readLong(stream);
			CompressedSize = readLong(stream);
			UncompressedSize = readLong(stream);
			NameLength = 0;
			ExtraLength = 0;
			return stream.offset() == startOffset + 16;
	}
}
开发者ID:MastAvalons，项目名称:FBReaderJ，代码行数:59，代码来源:ZLZipHeader.cpp

示例7: init

bool CHMFileInfo::init(ZLInputStream &stream) {
	{
		// header start
		if (readString(stream, 4) != "ITSF") {
			return false;
		}

		unsigned long version = readUnsignedDWord(stream);

		// DWORD total length
		// DWORD unknown
		// DWORD timestamp
		// DWORD language id
		// 0x10 bytes 1st GUID
		// 0x10 bytes 2nd GUID
		// QWORD section 0 offset
		// QWORD section 0 length
		stream.seek(4 * 4 + 2 * 0x10 + 2 * 8, false);
		
		unsigned long long sectionOffset1 = readUnsignedQWord(stream);
		unsigned long long sectionLength1 = readUnsignedQWord(stream);
		mySection0Offset = sectionOffset1 + sectionLength1;
		// header end

		// additional header data start
		if (version > 2) {
			mySection0Offset = readUnsignedQWord(stream);
		}
		// additional header data end

		stream.seek(sectionOffset1, true);
		// header section 1 start
		// directory header start
		if (readString(stream, 4) != "ITSP") {
			return false;
		}

		// DWORD version
		// DWORD length
		// DWORD 0x000A
		// DWORD chunk size
		// DWORD density
		// DWORD depth
		// DWORD root chunk number
		// DWORD first chunk number
		// DWORD last chunk number
		// DWORD -1
		stream.seek(10 * 4, false);
		unsigned long dirChunkNumber = readUnsignedDWord(stream);
		// ...
		stream.seek(36, false);
		// header section 1 end

		std::size_t nextOffset = stream.offset();
		for (unsigned long i = 0; i < dirChunkNumber; ++i) {
			nextOffset += 4096;
			std::string header = readString(stream, 4);
			if (header == "PMGL") {
				unsigned long quickRefAreaSize = readUnsignedDWord(stream) % 4096;
				stream.seek(12, false);
				std::size_t startOffset = stream.offset();
				std::size_t oldOffset = startOffset;
				while (startOffset < nextOffset - quickRefAreaSize) {
					int nameLength = readEncodedInteger(stream);
					std::string name = readString(stream, nameLength);
					int contentSection = readEncodedInteger(stream);
					int offset = readEncodedInteger(stream);
					int length = readEncodedInteger(stream);
					if (name.substr(0, 2) != "::") {
						name = ZLUnicodeUtil::toLower(name);
					}
					myRecords.insert(
						std::make_pair(
							name,
							CHMFileInfo::RecordInfo(contentSection, offset, length)
						)
					);
					startOffset = stream.offset();
					if (oldOffset == startOffset) {
						break;
					}
					oldOffset = startOffset;
				}
			} else if (header == "PMGI") {
				unsigned long quickRefAreaSize = readUnsignedDWord(stream);
				std::size_t startOffset = stream.offset();
				std::size_t oldOffset = startOffset;
				while (startOffset < nextOffset - quickRefAreaSize) {
					int nameLength = readEncodedInteger(stream);
					std::string name = readString(stream, nameLength);
					// chunk number
					readEncodedInteger(stream);
					startOffset = stream.offset();
					if (oldOffset == startOffset) {
						break;
					}
					oldOffset = startOffset;
				}
			}
			stream.seek(nextOffset, true);
//.........这里部分代码省略.........
开发者ID:euroelessar，项目名称:FBReader，代码行数:101，代码来源:CHMFile.cpp


注：本文中的ZLInputStream::offset方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。