Functions related to data compression (gzip format.)
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#include "compressutils.h"
#include <glib.h>
#include <zlib.h>
Go to the source code of this file.
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void * | gvm_compress (const void *src, unsigned long srclen, unsigned long *dstlen) |
| Compresses data in src buffer.
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void * | gvm_uncompress (const void *src, unsigned long srclen, unsigned long *dstlen) |
| Uncompresses data in src buffer.
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void * | gvm_compress_gzipheader (const void *src, unsigned long srclen, unsigned long *dstlen) |
| Compresses data in src buffer, gzip format compatible.
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static ssize_t | gz_file_read (void *cookie, char *buffer, size_t buffer_size) |
| Read decompressed data from a gzip file.
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static int | gz_file_close (void *cookie) |
| Close a gzip file.
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FILE * | gvm_gzip_open_file_reader (const char *path) |
| Opens a gzip file as a FILE* stream for reading and decompression.
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FILE * | gvm_gzip_open_file_reader_fd (int fd) |
| Opens a gzip file as a FILE* stream for reading and decompression.
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Functions related to data compression (gzip format.)
◆ _GNU_SOURCE
◆ G_LOG_DOMAIN
#define G_LOG_DOMAIN "libgvm util" |
◆ ZLIB_CONST
For z_const to be defined as const.
◆ gvm_compress()
void * gvm_compress |
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const void * | src, |
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unsigned long | srclen, |
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unsigned long * | dstlen ) |
Compresses data in src buffer.
- Parameters
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[in] | src | Buffer of data to compress. |
[in] | srclen | Length of data to compress. |
[out] | dstlen | Length of compressed data. |
- Returns
- Pointer to compressed data if success, NULL otherwise.
◆ gvm_compress_gzipheader()
void * gvm_compress_gzipheader |
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const void * | src, |
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unsigned long | srclen, |
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unsigned long * | dstlen ) |
Compresses data in src buffer, gzip format compatible.
- Parameters
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[in] | src | Buffer of data to compress. |
[in] | srclen | Length of data to compress. |
[out] | dstlen | Length of compressed data. |
- Returns
- Pointer to compressed data if success, NULL otherwise.
◆ gvm_gzip_open_file_reader()
FILE * gvm_gzip_open_file_reader |
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const char * | path | ) |
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Opens a gzip file as a FILE* stream for reading and decompression.
- Parameters
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[in] | path | Path to the gzip file to open. |
- Returns
- The FILE* on success, NULL otherwise.
◆ gvm_gzip_open_file_reader_fd()
FILE * gvm_gzip_open_file_reader_fd |
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int | fd | ) |
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Opens a gzip file as a FILE* stream for reading and decompression.
- Parameters
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[in] | fd | File descriptor of the gzip file to open. |
- Returns
- The FILE* on success, NULL otherwise.
◆ gvm_uncompress()
void * gvm_uncompress |
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const void * | src, |
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unsigned long | srclen, |
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unsigned long * | dstlen ) |
Uncompresses data in src buffer.
- Parameters
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[in] | src | Buffer of data to uncompress. |
[in] | srclen | Length of data to uncompress. |
[out] | dstlen | Length of uncompressed data. |
- Returns
- Pointer to uncompressed data if success, NULL otherwise.
◆ gz_file_close()
static int gz_file_close |
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void * | cookie | ) |
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Close a gzip file.
- Parameters
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[in] | cookie | The gzFile to close. |
- Returns
- 0 on success, other values on error (see gzclose() from zlib).
◆ gz_file_read()
static ssize_t gz_file_read |
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void * | cookie, |
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char * | buffer, |
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size_t | buffer_size ) |
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Read decompressed data from a gzip file.
- Parameters
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[in] | cookie | The gzFile to read from. |
[in] | buffer | The buffer to output decompressed data to. |
[in] | buffer_size | The size of the buffer. |
- Returns
- The number of bytes read into the buffer.