cgatools::util::OutputStream Class Reference

a std::ostream with good error messages, and which does fsync on close on UNIX. More...

#include <Streams.hpp>

List of all members.

Public Member Functions
	OutputStream (const char *fn)
	OutputStream (const std::string &fn)
void	open (const std::string &fn)
void	open (const char *fn)
void	close ()
Static Public Member Functions
static boost::shared_ptr < std::ostream >	openCompressedOutputStreamByExtension (const std::string &fn)
	Returns a pointer to an OutputStream or CompressedOutputStream, depending on the file extension.

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Detailed Description

a std::ostream with good error messages, and which does fsync on close on UNIX.

Note that calling flush() of this class will not cause fsync(2) call, since FileSinkDevice is not marked as flushable. This is so that we don't fsync on every f << std::endl. If you really need to sync to disk without closing the stream, you can do:

 OutputStream f("foo");
 f.flush();
 (*f).fsync();

This will use operator*() to get access to the underlying device. This class will fsync automatically when closing itself.

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Member Function Documentation

static boost::shared_ptr<std::ostream> cgatools::util::OutputStream::openCompressedOutputStreamByExtension

(

const std::string &

fn

)

[static]

Returns a pointer to an OutputStream or CompressedOutputStream, depending on the file extension.

File extensions supported:

• .gz -> gzip format
• .bz2 -> bzip2 format
• other -> straight InputStream

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

• Streams.hpp