Class Specialization
GZ File Stream
Adaption from gzFile of <zlib.h> to streams.
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GZ File Stream | |||||||
Include Headers
seqan/stream.h
Remarks
This is only available if SEQAN_HAS_ZLIB is set to 1.
Not copy constructable, not assignable.
Follows the RIIA pattern when the file is opened through open (and thus the underlying gzFile is owned).
Can be used as a wrapper around a gzFile or create such an object itself through open.
Also see the constructor.
Specialization of
Functions
| Determines whether an iterator is at the end position. (Stream) | |
| Closes a file. (Stream) | |
| Query a GZ File Stream for being "direct." | |
| Opens a file, stream, or persistent string. (Stream) |
Examples
It is easy to open a GZ file via open.
Stream<GZFile> gzStream;
open(gzStream, "/path/to/file.txt.gz", "r"); // binary is implicit
// Now, work with gzStream. The object will close the file on destruction.
You can also use GZ File Stream as a wrapper around an gzFile object.
In this case, we have to deal with the verbose code for opening the gzFile object.
#include <seqan/stream.h>
gzFile gzOut = gzopen("/path/to/file.txt.gz", "wb");
SEQAN_ASSERT(gzOut != NULL);
Stream<GZFile> gzStream(gzOut);
// Now, you can work with the stream gzStream.
// Note that you only have to close gzOut and not gzStream.
int res = gzclose(gzOut);
SEQAN_ASSERT_EQ(res, 0);
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