@@ -32,10 +32,15 @@
  * @brief A class for accessing and manipulating ZIP files.
  */
 @interface OFZIPArchive: OFObject
 {
 	OFSeekableStream *_stream;
+	enum {
+		OF_ZIP_ARCHIVE_MODE_READ,
+		OF_ZIP_ARCHIVE_MODE_WRITE,
+		OF_ZIP_ARCHIVE_MODE_APPEND
+	} _mode;
 	uint32_t _diskNumber, _centralDirectoryDisk;
 	uint64_t _centralDirectoryEntriesInDisk, _centralDirectoryEntries;
 	uint64_t _centralDirectorySize;
 	int64_t _centralDirectoryOffset;
 	OFString *_archiveComment;
@@ -52,44 +57,60 @@
 
 /*!
  * @brief Creates a new OFZIPArchive object with the specified seekable stream.
  *
  * @param stream A seekable stream from which the ZIP archive will be read
+ * @param mode The mode for the ZIP file. Valid modes are "r" for reading,
+ *	       "w" for creating a new file and "a" for appending to an existing
+ *	       file.
  * @return A new, autoreleased OFZIPArchive
  */
-+ (instancetype)archiveWithSeekableStream: (OFSeekableStream *)stream;
++ (instancetype)archiveWithSeekableStream: (OFSeekableStream *)stream
+				     mode: (OFString *)mode;
 
 #ifdef OF_HAVE_FILES
 /*!
  * @brief Creates a new OFZIPArchive object with the specified file.
  *
  * @param path The path to the ZIP file
+ * @param mode The mode for the ZIP file. Valid modes are "r" for reading,
+ *	       "w" for creating a new file and "a" for appending to an existing
+ *	       file.
  * @return A new, autoreleased OFZIPArchive
  */
-+ (instancetype)archiveWithPath: (OFString *)path;
++ (instancetype)archiveWithPath: (OFString *)path
+			   mode: (OFString *)mode;
 #endif
 
 - init OF_UNAVAILABLE;
 
 /*!
  * @brief Initializes an already allocated OFZIPArchive object with the
  *	  specified seekable stream.
  *
  * @param stream A seekable stream from which the ZIP archive will be read
+ * @param mode The mode for the ZIP file. Valid modes are "r" for reading,
+ *	       "w" for creating a new file and "a" for appending to an existing
+ *	       file.
  * @return An initialized OFZIPArchive
  */
-- initWithSeekableStream: (OFSeekableStream *)stream OF_DESIGNATED_INITIALIZER;
+- initWithSeekableStream: (OFSeekableStream *)stream
+		    mode: (OFString *)mode OF_DESIGNATED_INITIALIZER;
 
 #ifdef OF_HAVE_FILES
 /*!
  * @brief Initializes an already allocated OFZIPArchive object with the
  *	  specified file.
  *
  * @param path The path to the ZIP file
+ * @param mode The mode for the ZIP file. Valid modes are "r" for reading,
+ *	       "w" for creating a new file and "a" for appending to an existing
+ *	       file.
  * @return An initialized OFZIPArchive
  */
-- initWithPath: (OFString *)path;
+- initWithPath: (OFString *)path
+	  mode: (OFString *)mode;
 #endif
 
 /*!
  * @brief Returns the entries of the central directory of the archive as an
  * 	  array of objects of class @ref OFZIPArchiveEntry.
@@ -102,10 +123,12 @@
  */
 - (OFArray OF_GENERIC(OFZIPArchiveEntry *) *)entries;
 
 /*!
  * @brief Returns a stream for reading the specified file from the archive.
+ *
+ * This method is only available in read and append mode.
  *
  * @warning Calling @ref streamForReadingFile: will invalidate all streams
  *	    previously returned by @ref streamForReadingFile:! Reading from an
  *	    invalidated stream will throw an @ref OFReadFailedException!
  *