Memory-managed wrapper type.

Type class for types which can be safely cast to InputStream, for instance with toInputStream.

Cast to InputStream, for types for which this is known to be safe. For general casts, use castTo.

A convenience alias for Nothing :: Maybe InputStream.

Clears the pending flag on stream.

Closes the stream, releasing resources related to it.

Once the stream is closed, all other operations will return IOErrorEnumClosed. Closing a stream multiple times will not return an error.

Streams will be automatically closed when the last reference is dropped, but you might want to call this function to make sure resources are released as early as possible.

Some streams might keep the backing store of the stream (e.g. a file descriptor) open after the stream is closed. See the documentation for the individual stream for details.

On failure the first error that happened will be reported, but the close operation will finish as much as possible. A stream that failed to close will still return IOErrorEnumClosed for all operations. Still, it is important to check and report the error to the user.

If cancellable is not Nothing, then the operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled, the error IOErrorEnumCancelled will be returned. Cancelling a close will still leave the stream closed, but some streams can use a faster close that doesn't block to e.g. check errors.

Requests an asynchronous closes of the stream, releasing resources related to it. When the operation is finished callback will be called. You can then call inputStreamCloseFinish to get the result of the operation.

For behaviour details see inputStreamClose.

The asynchronous methods have a default fallback that uses threads to implement asynchronicity, so they are optional for inheriting classes. However, if you override one you must override all.

Finishes closing a stream asynchronously, started from inputStreamCloseAsync.

Checks if an input stream has pending actions.

Checks if an input stream is closed.

Tries to read count bytes from the stream into the buffer starting at buffer. Will block during this read.

If count is zero returns zero and does nothing. A value of count larger than G_MAXSSIZE will cause a IOErrorEnumInvalidArgument error.

On success, the number of bytes read into the buffer is returned. It is not an error if this is not the same as the requested size, as it can happen e.g. near the end of a file. Zero is returned on end of file (or if count is zero), but never otherwise.

The returned buffer is not a nul-terminated string, it can contain nul bytes at any position, and this function doesn't nul-terminate the buffer.

If cancellable is not Nothing, then the operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled, the error IOErrorEnumCancelled will be returned. If an operation was partially finished when the operation was cancelled the partial result will be returned, without an error.

On error -1 is returned and error is set accordingly.

Tries to read count bytes from the stream into the buffer starting at buffer. Will block during this read.

This function is similar to inputStreamRead, except it tries to read as many bytes as requested, only stopping on an error or end of stream.

On a successful read of count bytes, or if we reached the end of the stream, True is returned, and bytesRead is set to the number of bytes read into buffer.

If there is an error during the operation False is returned and error is set to indicate the error status.

As a special exception to the normal conventions for functions that use GError, if this function returns False (and sets error) then bytesRead will be set to the number of bytes that were successfully read before the error was encountered. This functionality is only available from C. If you need it from another language then you must write your own loop around inputStreamRead.

Request an asynchronous read of count bytes from the stream into the buffer starting at buffer.

This is the asynchronous equivalent of inputStreamReadAll.

Call inputStreamReadAllFinish to collect the result.

Any outstanding I/O request with higher priority (lower numerical value) will be executed before an outstanding request with lower priority. Default priority is PRIORITY_DEFAULT.

Since: 2.44

Finishes an asynchronous stream read operation started with inputStreamReadAllAsync.

As a special exception to the normal conventions for functions that use GError, if this function returns False (and sets error) then bytesRead will be set to the number of bytes that were successfully read before the error was encountered. This functionality is only available from C. If you need it from another language then you must write your own loop around inputStreamReadAsync.

Since: 2.44

Request an asynchronous read of count bytes from the stream into the buffer starting at buffer. When the operation is finished callback will be called. You can then call inputStreamReadFinish to get the result of the operation.

During an async request no other sync and async calls are allowed on stream, and will result in IOErrorEnumPending errors.

A value of count larger than G_MAXSSIZE will cause a IOErrorEnumInvalidArgument error.

On success, the number of bytes read into the buffer will be passed to the callback. It is not an error if this is not the same as the requested size, as it can happen e.g. near the end of a file, but generally we try to read as many bytes as requested. Zero is returned on end of file (or if count is zero), but never otherwise.

Any outstanding i/o request with higher priority (lower numerical value) will be executed before an outstanding request with lower priority. Default priority is PRIORITY_DEFAULT.

The asynchronous methods have a default fallback that uses threads to implement asynchronicity, so they are optional for inheriting classes. However, if you override one you must override all.

Like inputStreamRead, this tries to read count bytes from the stream in a blocking fashion. However, rather than reading into a user-supplied buffer, this will create a new Bytes containing the data that was read. This may be easier to use from language bindings.

If count is zero, returns a zero-length Bytes and does nothing. A value of count larger than G_MAXSSIZE will cause a IOErrorEnumInvalidArgument error.

On success, a new Bytes is returned. It is not an error if the size of this object is not the same as the requested size, as it can happen e.g. near the end of a file. A zero-length Bytes is returned on end of file (or if count is zero), but never otherwise.

If cancellable is not Nothing, then the operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled, the error IOErrorEnumCancelled will be returned. If an operation was partially finished when the operation was cancelled the partial result will be returned, without an error.

On error Nothing is returned and error is set accordingly.

Since: 2.34

Request an asynchronous read of count bytes from the stream into a new Bytes. When the operation is finished callback will be called. You can then call inputStreamReadBytesFinish to get the result of the operation.

During an async request no other sync and async calls are allowed on stream, and will result in IOErrorEnumPending errors.

A value of count larger than G_MAXSSIZE will cause a IOErrorEnumInvalidArgument error.

On success, the new Bytes will be passed to the callback. It is not an error if this is smaller than the requested size, as it can happen e.g. near the end of a file, but generally we try to read as many bytes as requested. Zero is returned on end of file (or if count is zero), but never otherwise.

Any outstanding I/O request with higher priority (lower numerical value) will be executed before an outstanding request with lower priority. Default priority is PRIORITY_DEFAULT.

Since: 2.34

Finishes an asynchronous stream read-into-Bytes operation.

Since: 2.34

Finishes an asynchronous stream read operation.

Sets stream to have actions pending. If the pending flag is already set or stream is closed, it will return False and set error.

Tries to skip count bytes from the stream. Will block during the operation.

This is identical to inputStreamRead, from a behaviour standpoint, but the bytes that are skipped are not returned to the user. Some streams have an implementation that is more efficient than reading the data.

This function is optional for inherited classes, as the default implementation emulates it using read.

If cancellable is not Nothing, then the operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled, the error IOErrorEnumCancelled will be returned. If an operation was partially finished when the operation was cancelled the partial result will be returned, without an error.

Request an asynchronous skip of count bytes from the stream. When the operation is finished callback will be called. You can then call inputStreamSkipFinish to get the result of the operation.

During an async request no other sync and async calls are allowed, and will result in IOErrorEnumPending errors.

A value of count larger than G_MAXSSIZE will cause a IOErrorEnumInvalidArgument error.

On success, the number of bytes skipped will be passed to the callback. It is not an error if this is not the same as the requested size, as it can happen e.g. near the end of a file, but generally we try to skip as many bytes as requested. Zero is returned on end of file (or if count is zero), but never otherwise.

Any outstanding i/o request with higher priority (lower numerical value) will be executed before an outstanding request with lower priority. Default priority is PRIORITY_DEFAULT.

The asynchronous methods have a default fallback that uses threads to implement asynchronicity, so they are optional for inheriting classes. However, if you override one, you must override all.

Finishes a stream skip operation.