DXR is a code search and navigation tool aimed at making sense of large projects. It supports full-text and regex searches as well as structural queries.

Mercurial (dcc6d7a0dc00)

VCS Links

Line Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220
/* 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(3ca10750-797e-4a22-bcfe-66170b5e96dd)]
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
   */
  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
   */
  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
   */
  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);
};