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view srf2fastq/io_lib-1.12.2/io_lib/compress.h @ 0:d901c9f41a6a default tip
Migrated tool version 1.0.1 from old tool shed archive to new tool shed repository
author | dawe |
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date | Tue, 07 Jun 2011 17:48:05 -0400 |
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/* * Copyright (c) Medical Research Council 1994. All rights reserved. * * Permission to use, copy, modify and distribute this software and its * documentation for any purpose is hereby granted without fee, provided that * this copyright and notice appears in all copies. * * This file was written by James Bonfield, Simon Dear, Rodger Staden, * as part of the Staden Package at the MRC Laboratory of Molecular * Biology, Hills Road, Cambridge, CB2 2QH, United Kingdom. * * MRC disclaims all warranties with regard to this software. */ #ifndef _COMPRESS_H #define _COMPRESS_H #include <stdio.h> #include "io_lib/mFILE.h" #ifdef __cplusplus extern "C" { #endif /* * Compress a file using the method set in the compression_used value * (set by set_compression_method and fopen_compressed). * * If compression succeeds, we rename the file back its original name. * * When compression_used is 0 no compression is done. */ int compress_file(char *file); int fcompress_file(mFILE *fp); /* * Returns a file pointer of an uncompressed copy of 'file'. * 'file' need not exist if 'file'.ext (eg file.gz) * exists and can be uncompressed. * * If ofp is non NULL then the original file pointer will also be returned * (opened for update) to allow writing back to the original file. In cases * of uncompressed data this is the same as the returned file pointer. */ mFILE *fopen_compressed(char *file, mFILE **ofp); /* * Returns a file pointer of an uncompressed copy of 'fp'. * * If ofp is non NULL then the original file pointer will also be returned * (opened for update) to allow writing back to the original file. In cases * of uncompressed data this is the same as the returned file pointer. */ mFILE *freopen_compressed(mFILE *fp, mFILE **ofp); /* * Sets the desired compression method. The below macros relate to entries * in the compression magic numbers table. */ void set_compression_method(int method); int get_compression_method(void); /* * Converts compress mode strings (eg "gzip") to numbers. */ int compress_str2int(char *mode); /* * Converts compress mode numbers to strings (eg "gzip"). */ char *compress_int2str(int mode); #define COMP_METHOD_NONE 0 #define COMP_METHOD_BZIP 1 #define COMP_METHOD_GZIP 2 #define COMP_METHOD_COMPRESS 3 #define COMP_METHOD_BZIP2 5 #define COMP_METHOD_SZIP 6 /* * In memory gzip and gunzip using zlib. In each case data is the input * data (with 'size') and the returned value is the output data along with * [cu]data_size being the returned data size. * * Both return NULL on failure */ char *memgzip(char *data, size_t size, size_t *cdata_size); char *memgunzip(char *data, size_t size, size_t *udata_size); /* * Given a filename remove a known compression extension * * Returns: None */ void remove_extension(char *file); #ifdef __cplusplus } #endif #endif /* _COMPRESS_H */