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@interface OFStream: OFObject
{
char *cache;
size_t cache_len;
}
/**
* Returns a boolean whether the end of the stream has been reached.
*
* IMPORTANT: Do *NOT* override this in subclasses! Override
* atEndOfStreamWithoutCache instead, as otherwise, you *WILL* break caching and
* thus get broken results!
*
* \return A boolean whether the end of the stream has been reached
*/
- (BOOL)atEndOfStream;
/**
* Returns a boolean whether the end of the stream has been reached without
* looking at the cache.
*
* IMPORTANT: Do *NOT* use this! Use atEndOfCache instead, as this is *ONLY*
* for being overriden in subclasses!
*
* \return A boolean whether the end of the stream has been reached
*/
- (BOOL)atEndOfStreamWithoutCache;
/**
* Reads from the stream into a buffer.
*
* IMPORTANT: Do *NOT* override this in subclasses! Override
* readNBytesWithoutCache:intoBuffer: instead, as otherwise, you *WILL* break
* caching and thus get broken results!
*
* \param buf The buffer into which the data is read
* \param size The size of the data that should be read.
* The buffer MUST be at least size big!
* \return The number of bytes read
*/
- (size_t)readNBytes: (size_t)size
intoBuffer: (char*)buf;
/**
* Read until a newline, \\0 or end of stream occurs.
* Reads from the stream into a buffer without looking at the cache.
*
* If you want to use readNBytes afterwards again, you have to clear the cache
* before and optionally get the cache before clearing it!
* IMPORTANT: Do *NOT* use this! Use readNBytes:intoBuffer: instead, as this is
* *ONLY* for being overriden in subclasses!
*
* You also need to pay attention to the cache if you want to know if there is
* still data left - atEndOfStream can return NO even if there is still data
* in the cache!
* \param buf The buffer into which the data is read
* \param size The size of the data that should be read.
* The buffer MUST be at least size big!
* \return The number of bytes read
*/
- (size_t)readNBytesWithoutCache: (size_t)size
intoBuffer: (char*)buf;
/**
* Read until a newline, \\0 or end of stream occurs.
*
* \return The line that was read, autoreleased, or nil if the end of the
* stream has been reached.
*/
- (OFString*)readLine;
/**
* Read with the specified encoding until a newline, \\0 or end of stream
* occurs.
*
* If you want to use readNBytes afterwards again, you have to clear the cache
* before and optionally get the cache before clearing it!
*
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* Writes a string into the stream, without the trailing zero.
*
* \param str The string from which the data is written to the stream
* \return The number of bytes written
*/
- (size_t)writeString: (OFString*)str;
/**
* Sets a specified pointer to the cache and returns the length of the cache.
*
* \param ptr A pointer to a pointer. It will be set to the cache.
* If it is NULL, only the number of bytes in the cache is returned.
* \return The number of bytes in the cache.
*/
- (size_t)getCache: (char**)ptr;
/**
* Clears the cache.
*/
- clearCache;
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