/* This Source Code Form is subject to the terms of the Mozilla Public
* License , v . 2 . 0 . If a copy of the MPL was not distributed with this
* file , You can obtain one at http : //mozilla.org/MPL/2.0/.
*/
#include "nsISupports.idl"
interface nsIChannel;
interface nsIInputStream;
interface nsIRequestObserver;
interface nsIFile;
interface nsIZipEntry;
/**
* nsIZipWriter
*
* An interface for a zip archiver that can be used from script .
*
* The interface supports both a synchronous method of archiving data and a
* queueing system to allow operations to be prepared then run in sequence
* with notification after completion .
*
* Operations added to the queue do not get performed until performQueue is
* called at which point they will be performed in the order that they were
* added to the queue .
*
* Operations performed on the queue will throw any errors out to the
* observer .
*
* An attempt to perform a synchronous operation while the background queue
* is in progress will throw NS_ERROR_IN_PROGRESS .
*
* Entry names should use / ' s as path separators and should not start with
* a / .
*
* It is not generally necessary to add directory entries in order to add file
* entries within them , however it is possible that some zip programs may
* experience problems what that .
*/
[scriptable, uuid(3 ca10750-797 e-4 a22-bcfe-66170 b5e96dd)]
interface nsIZipWriter : nsISupports
{
/**
* Some predefined compression levels
*/
const uint32_t COMPRESSION_NONE = 0 ;
const uint32_t COMPRESSION_FASTEST = 1 ;
const uint32_t COMPRESSION_DEFAULT = 6 ;
const uint32_t COMPRESSION_BEST = 9 ;
/**
* Gets or sets the comment associated with the open zip file .
*
* @ throws NS_ERROR_NOT_INITIALIZED if no zip file has been opened
*/
attribute ACString comment;
/**
* Indicates that operations on the background queue are being performed .
*/
readonly attribute boolean inQueue;
/**
* The file that the zipwriter is writing to .
*/
readonly attribute nsIFile file;
/**
* Opens a zip file .
*
* @ param aFile the zip file to open
* @ param aIoFlags the open flags for the zip file from prio . h
*
* @ throws NS_ERROR_ALREADY_INITIALIZED if a zip file is already open
* @ throws NS_ERROR_INVALID_ARG if aFile is null
* @ throws NS_ERROR_FILE_NOT_FOUND if aFile does not exist and flags did
* not allow for creation
* @ throws NS_ERROR_FILE_CORRUPTED if the file does not contain zip markers
* @ throws < other - error > on failure to open zip file ( most likely corrupt
* or unsupported form )
*/
void open(in nsIFile aFile, in int32_t aIoFlags);
/**
* Returns a nsIZipEntry describing a specified zip entry or null if there
* is no such entry in the zip file
*
* @ param aZipEntry the path of the entry
*/
nsIZipEntry getEntry(in AUTF8String aZipEntry);
/**
* Checks whether the zipfile contains an entry specified by zipEntry .
*
* @ param aZipEntry the path of the entry
*/
boolean hasEntry(in AUTF8String aZipEntry);
/**
* Adds a new directory entry to the zip file . If aZipEntry does not end with
* " / " then it will be added .
*
* @ param aZipEntry the path of the directory entry
* @ param aModTime the modification time of the entry in microseconds
* @ param aQueue adds the operation to the background queue . Will be
* performed when processQueue is called .
*
* @ throws NS_ERROR_NOT_INITIALIZED if no zip file has been opened
* @ throws NS_ERROR_FILE_ALREADY_EXISTS if the path already exists in the
* file
* @ throws NS_ERROR_IN_PROGRESS if another operation is currently in progress
* @ throws NS_ERROR_INVALID_ARG if aModTime is older than 1980 - 1 - 1
*/
void addEntryDirectory(in AUTF8String aZipEntry, in PRTime aModTime,
in boolean aQueue);
/**
* Adds a new file or directory to the zip file . If the specified file is
* a directory then this will be equivalent to a call to
* addEntryDirectory ( aZipEntry , aFile . lastModifiedTime , aQueue )
*
* @ param aZipEntry the path of the file entry
* @ param aCompression the compression level , 0 is no compression , 9 is best
* @ param aFile the file to get the data and modification time from
* @ param aQueue adds the operation to the background queue . Will be
* performed when processQueue is called .
*
* @ throws NS_ERROR_NOT_INITIALIZED if no zip file has been opened
* @ throws NS_ERROR_FILE_ALREADY_EXISTS if the path already exists in the zip
* @ throws NS_ERROR_IN_PROGRESS if another operation is currently in progress
* @ throws NS_ERROR_FILE_NOT_FOUND if file does not exist
*/
void addEntryFile(in AUTF8String aZipEntry,
in int32_t aCompression, in nsIFile aFile,
in boolean aQueue);
/**
* Adds data from a channel to the zip file . If the operation is performed
* on the queue then the channel will be opened asynchronously , otherwise
* the channel must support being opened synchronously .
*
* @ param aZipEntry the path of the file entry
* @ param aModTime the modification time of the entry in microseconds
* @ param aCompression the compression level , 0 is no compression , 9 is best
* @ param aChannel the channel to get the data from
* @ param aQueue adds the operation to the background queue . Will be
* performed when processQueue is called .
*
* @ throws NS_ERROR_NOT_INITIALIZED if no zip file has been opened
* @ throws NS_ERROR_FILE_ALREADY_EXISTS if the path already exists in the zip
* @ throws NS_ERROR_IN_PROGRESS if another operation is currently in progress
* @ throws NS_ERROR_INVALID_ARG if aModTime is older than 1980 - 1 - 1
*/
void addEntryChannel(in AUTF8String aZipEntry, in PRTime aModTime,
in int32_t aCompression, in nsIChannel aChannel,
in boolean aQueue);
/**
* Adds data from an input stream to the zip file .
*
* @ param aZipEntry the path of the file entry
* @ param aModTime the modification time of the entry in microseconds
* @ param aCompression the compression level , 0 is no compression , 9 is best
* @ param aStream the input stream to get the data from
* @ param aQueue adds the operation to the background queue . Will be
* performed when processQueue is called .
*
* @ throws NS_ERROR_NOT_INITIALIZED if no zip file has been opened
* @ throws NS_ERROR_FILE_ALREADY_EXISTS if the path already exists in the zip
* @ throws NS_ERROR_IN_PROGRESS if another operation is currently in progress
* @ throws NS_ERROR_INVALID_ARG if aModTime is older than 1980 - 1 - 1
*/
void addEntryStream(in AUTF8String aZipEntry, in PRTime aModTime,
in int32_t aCompression, in nsIInputStream aStream,
in boolean aQueue);
/**
* Removes an existing entry from the zip file .
*
* @ param aZipEntry the path of the entry to be removed
* @ param aQueue adds the operation to the background queue . Will be
* performed when processQueue is called .
*
* @ throws NS_ERROR_NOT_INITIALIZED if no zip file has been opened
* @ throws NS_ERROR_IN_PROGRESS if another operation is currently in progress
* @ throws NS_ERROR_FILE_NOT_FOUND if no entry with the given path exists
* @ throws < other - error > on failure to update the zip file
*/
void removeEntry(in AUTF8String aZipEntry, in boolean aQueue);
/**
* Processes all queued items until complete or some error occurs . The
* observer will be notified when the first operation starts and when the
* last operation completes . Any failures will be passed to the observer .
* The zip writer will be busy until the queue is complete or some error
* halted processing of the queue early . In the event of an early failure ,
* remaining items will stay in the queue and calling processQueue will
* continue .
*
* @ throws NS_ERROR_NOT_INITIALIZED if no zip file has been opened
* @ throws NS_ERROR_IN_PROGRESS if the queue is already in progress
*/
void processQueue(in nsIRequestObserver aObserver, in nsISupports aContext);
/**
* Closes the zip file .
*
* @ throws NS_ERROR_NOT_INITIALIZED if no zip file has been opened
* @ throws NS_ERROR_IN_PROGRESS if another operation is currently in progress
* @ throws < other - error > on failure to complete the zip file
*/
void close();
/**
* Make all stored ( uncompressed ) files align to given alignment size .
*
* @ param aAlignSize is the alignment size , valid values from 2 to 32768 , and
must be power of 2 .
*
* @ throws NS_ERROR_INVALID_ARG if aAlignSize is invalid
* @ throws < other - error > on failure to update the zip file
*/
void alignStoredFiles(in uint16_t aAlignSize);
};
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