Job::DataSource::IO Class Reference

User interaction for DataSource. More...

#include <datasource.hh>

Inheritance diagram for Job::DataSource::IO:

List of all members.

Public Member Functions
virtual void	job_deleted ()=0
	Called by the job when it is deleted.
virtual void	job_succeeded ()=0
	Called when the job has successfully completed its task.
virtual void	job_failed (const string &message)=0
	Called when the job fails.
virtual void	job_message (const string &message)=0
	Informational message.
virtual void	dataSource_dataSize (uint64 n)=0
	Called as soon as the size of the downloaded data is known.
virtual void	dataSource_data (const byte *data, unsigned size, uint64 currentSize)=0
	Called during download whenever data arrives, with the data that just arrived.

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Detailed Description

User interaction for DataSource.

Instances of derived classes are attached to any DataSources that the MakeImageDl creates.

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Member Function Documentation

virtual void Job::DataSource::IO::job_deleted

(

)

[pure virtual]

Called by the job when it is deleted.

If the IO object considers itself owned by its job, it can delete itself.

Implements Job::IO.

virtual void Job::DataSource::IO::job_succeeded

(

)

[pure virtual]

Called when the job has successfully completed its task.

Implements Job::IO.

virtual void Job::DataSource::IO::job_failed

(

const string &

message

)

[pure virtual]

Called when the job fails.

The only remaining action after getting this is to delete the job object.

Implements Job::IO.

virtual void Job::DataSource::IO::job_message

(

const string &

message

)

[pure virtual]

Informational message.

Implements Job::IO.

virtual void Job::DataSource::IO::dataSource_dataSize

(

uint64

n

)

[pure virtual]

Called as soon as the size of the downloaded data is known.

May not be called at all if the size is unknown. Problem with libwww: Returns size as long int - 2 GB size limit!

virtual void Job::DataSource::IO::dataSource_data	(	const byte *	data,
		unsigned	size,
		uint64	currentSize
	)			[pure virtual]

Called during download whenever data arrives, with the data that just arrived.

You can write the data to a file, copy it away etc. currentSize is the offset into the downloaded data (including the "size" new bytes) - useful for "x% done" messages.

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The documentation for this class was generated from the following file:

• job/datasource.hh