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BitExtractor
The BitExtractor template class allows extracting the content of archives from supported input types.
Template Parameters:
- Input: the type of input archives that the generated extractor class supports.
#include <bit7z/bitextractor.hpp>inherits from BitAbstractArchiveOpener.
| Return type | Name |
|---|---|
| BitExtractor( const Bit7zLibrary& lib, const BitInFormat& format = BitFormat::Auto ) | |
| void | clearPassword() noexcept |
| void | extract( Input inArchive, const tstring& outDir = {} ) const |
| void | extract( Input inArchive, std::map< tstring, vector< byte_t > >& outMap ) const |
| void | extract( Input inArchive, std::ostream& outStream, uint32_t index = 0 ) const |
| void | extract( Input inArchive, vector< byte_t >& outBuffer, uint32_t index = 0 ) const |
| const BitInFormat & | extractionFormat() const noexcept |
| void | extractItems( Input inArchive, const std::vector< uint32_t >& indices, const tstring& outDir = {} ) const |
| void | extractMatching( Input inArchive, const tstring& itemFilter, const tstring& outDir = {}, FilterPolicy policy = FilterPolicy::Include ) const |
| void | extractMatching( Input inArchive, const tstring& itemFilter, vector< byte_t >& outBuffer, FilterPolicy policy = FilterPolicy::Include ) const |
| void | extractMatchingRegex( Input inArchive, const tstring& regex, const tstring& outDir = {}, FilterPolicy policy = FilterPolicy::Include ) const |
| void | extractMatchingRegex( Input inArchive, const tstring& regex, vector< byte_t >& outBuffer, FilterPolicy policy = FilterPolicy::Include ) const |
| FileCallback | fileCallback() const |
| const BitInFormat &override | format() const noexcept |
| bool | isPasswordDefined() const noexcept |
| const Bit7zLibrary & | library() const noexcept |
| OverwriteMode | overwriteMode() const |
| tstring | password() const |
| PasswordCallback | passwordCallback() const |
| ProgressCallback | progressCallback() const |
| RatioCallback | ratioCallback() const |
| bool | retainDirectories() const noexcept |
| void | setFileCallback( const FileCallback& callback ) |
| void | setOverwriteMode( OverwriteMode mode ) |
| void | setPassword( const tstring& password ) |
| void | setPasswordCallback( const PasswordCallback& callback ) |
| void | setProgressCallback( const ProgressCallback& callback ) |
| void | setRatioCallback( const RatioCallback& callback ) |
| void | setRetainDirectories( bool retain ) noexcept |
| void | setTotalCallback( const TotalCallback& callback ) |
| void | test( Input inArchive ) const |
| TotalCallback | totalCallback() const |
BitExtractor( const Bit7zLibrary& lib, const BitInFormat& format = BitFormat::Auto )
Constructs a BitExtractor object. The Bit7zLibrary parameter is needed to have access to the functionalities of the 7z DLLs. On the contrary, the BitInFormat is required to know the format of the in_file archives.
Note
When bit7z is compiled using the BIT7Z_AUTO_FORMAT macro define, the format argument has the default value BitFormat::Auto (automatic format detection of the in_file archive). Otherwise, when BIT7Z_AUTO_FORMAT is not defined (i.e., no auto format detection available), the format argument must be specified.
Parameters:
- lib: the 7z library to use.
- format: the in_file archive format.
Clear the current password used by the handler. Calling clearPassword() will disable the encryption/decryption of archives.
Note
This is equivalent to calling setPassword(L"").
void extract( Input inArchive, const tstring& outDir = {} ) const
Extracts the given archive to the chosen directory.
Parameters:
- inArchive: the input archive to be extracted.
- outDir: the output directory where extracted files will be put.
Extracts the content of the given archive into a map of memory buffers, where the keys are the paths of the files (inside the archive), and the values are their decompressed contents.
Parameters:
- inArchive: the input archive to be extracted.
- outMap: the output map.
void extract( Input inArchive, std::ostream& outStream, uint32_t index = 0 ) const
Extracts a file from the given archive to the output stream.
Parameters:
- inArchive: the input archive to extract from.
- outStream: the (binary) stream where the content of the extracted file will be put.
- index: the index of the file to be extracted from the archive.
Extracts a file from the given archive to the output buffer.
Parameters:
- inArchive: the input archive to extract from.
- outBuffer: the output buffer where the content of the extracted file will be put.
- index: the index of the file to be extracted from the archive.
const BitInFormat & extractionFormat() const noexcept
Returns the archive format used by the archive opener.
void extractItems( Input inArchive, const std::vector< uint32_t >& indices, const tstring& outDir = {} ) const
Extracts the specified items from the given archive to the chosen directory.
Parameters:
- inArchive: the input archive to extract from.
- indices: the indices of the files in the archive that should be extracted.
- outDir: the output directory where the extracted files will be placed.
void extractMatching( Input inArchive, const tstring& itemFilter, const tstring& outDir = {}, FilterPolicy policy = FilterPolicy::Include ) const
Extracts the files in the archive that match the given wildcard pattern to the chosen directory.
Parameters:
- inArchive: the input archive to extract from.
- itemFilter: the wildcard pattern used for matching the paths of files inside the archive.
- outDir: the output directory where extracted files will be put.
- policy: the filtering policy to be applied to the matched items.
void extractMatching( Input inArchive, const tstring& itemFilter, vector< byte_t >& outBuffer, FilterPolicy policy = FilterPolicy::Include ) const
Extracts to the output buffer the first file in the archive matching the given wildcard pattern.
Parameters:
- inArchive: the input archive to extract from.
- itemFilter: the wildcard pattern used for matching the paths of files inside the archive.
- outBuffer: the output buffer where to extract the file.
- policy: the filtering policy to be applied to the matched items.
void extractMatchingRegex( Input inArchive, const tstring& regex, const tstring& outDir = {}, FilterPolicy policy = FilterPolicy::Include ) const
Extracts the files in the archive that match the given regex pattern to the chosen directory.
Note
Available only when compiling bit7z using the BIT7Z_REGEX_MATCHING preprocessor define.
Parameters:
- inArchive: the input archive to extract from.
- regex: the regex used for matching the paths of files inside the archive.
- outDir: the output directory where extracted files will be put.
- policy: the filtering policy to be applied to the matched items.
void extractMatchingRegex( Input inArchive, const tstring& regex, vector< byte_t >& outBuffer, FilterPolicy policy = FilterPolicy::Include ) const
Extracts the first file in the archive that matches the given regex pattern to the output buffer.
Note
Available only when compiling bit7z using the BIT7Z_REGEX_MATCHING preprocessor define.
Parameters:
- inArchive: the input archive to extract from.
- regex: the regex used for matching the paths of files inside the archive.
- outBuffer: the output buffer where the extracted file will be put.
- policy: the filtering policy to be applied to the matched items.
FileCallback fileCallback() const
Returns the current file callback.
[virtual] const BitInFormat &override format() const noexcept
Returns the archive format used by the archive opener.
Returns a boolean value indicating whether a password is defined or not.
const Bit7zLibrary & library() const noexcept
Returns the Bit7zLibrary object used by the handler.
OverwriteMode overwriteMode() const
Returns the current OverwriteMode.
tstring password() const
Returns the password used to open, extract, or encrypt the archive.
PasswordCallback passwordCallback() const
Returns the current password callback.
ProgressCallback progressCallback() const
Returns the current progress callback.
RatioCallback ratioCallback() const
Returns the current ratio callback.
Returns a boolean value indicating whether the directory structure must be preserved while extracting or compressing the archive.
void setFileCallback( const FileCallback& callback )
Sets the function to be called when the current file being processed changes.
Parameters:
- callback: the file callback to be used.
void setOverwriteMode( OverwriteMode mode )
Sets how the handler should behave when it tries to output to an existing file or buffer.
Parameters:
- mode: the OverwriteMode to be used by the handler.
[virtual] void setPassword( const tstring& password )
Sets up a password to be used by the archive handler. The password will be used to encrypt/decrypt archives by using the default cryptographic method of the archive format.
Note
Calling setPassword when the input archive is not encrypted does not have any effect on the extraction process.
Note
Calling setPassword when the output format doesn't support archive encryption (e.g., GZip, BZip2, etc...) does not have any effects (in other words, it doesn't throw exceptions, and it has no effects on compression operations).
Note
After a password has been set, it will be used for every subsequent operation. To disable the use of the password, you need to call the clearPassword method, which is equivalent to calling setPassword(L"").
Parameters:
- password: the password to be used.
void setPasswordCallback( const PasswordCallback& callback )
Sets the function to be called when a password is needed to complete the ongoing operation.
Parameters:
- callback: the password callback to be used.
void setProgressCallback( const ProgressCallback& callback )
Sets the function to be called when the processed size of the ongoing operation is updated.
Note
The completion percentage of the current operation can be obtained by calculating static_cast<int>((100.0 * processed_size) / total_size).
Parameters:
- callback: the progress callback to be used.
void setRatioCallback( const RatioCallback& callback )
Sets the function to be called when the input processed size and current output size of the ongoing operation are known.
Note
The ratio percentage of a compression operation can be obtained by calculating static_cast<int>((100.0 * output_size) / input_size).
Parameters:
- callback: the ratio callback to be used.
Sets whether the operations' output will preserve the input's directory structure or not.
Parameters:
- retain: the setting for preserving or not the input directory structure
void setTotalCallback( const TotalCallback& callback )
Sets the function to be called when the total size of an operation is available.
Parameters:
- callback: the total callback to be used.
Tests the given archive without extracting its content. If the archive is not valid, a BitException is thrown!
Parameters:
- inArchive: the input archive to be tested.
TotalCallback totalCallback() const
Returns the current total callback.
Copyright © 2014 - 2024 Riccardo Ostani (@rikyoz)
- Bit7zLibrary
- BitArchiveEditor
- BitArchiveReader
- BitArchiveWriter
- BitException
- BitFileCompressor
- BitFileExtractor
- BitMemCompressor
- BitMemExtractor
- BitStreamCompressor
- BitStreamExtractor
- BitInFormat