compress.c File Reference

Shared compression code. More...

#include "config.h"
#include <stdio.h>
#include <string.h>
#include "mutt/lib.h"
#include "lib.h"

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Functions
const char *	compress_list (void)
	Get a list of compression backend names. More...
const struct ComprOps *	compress_get_ops (const char *compr)
	Get the API functions for a compress backend. More...

Variables
static const struct ComprOps *	CompressOps []
	Backend implementations. More...

Detailed Description

Shared compression code.

Authors

• Tino Reichardt

Copyright

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

Definition in file compress.c.

Function Documentation

compress_list()

const char * compress_list

(

void

)

Get a list of compression backend names.

Return values

ptr	Comma-space-separated list of names

Note

The caller should free the string

Definition at line 57 of file compress.c.

{
  char tmp[256] = { 0 };
  const struct ComprOps **ops = CompressOps;
  size_t len = 0;
 
  for (; *ops; ops++)
  {
    if (len != 0)
    {
      len += snprintf(tmp + len, sizeof(tmp) - len, ", ");
    }
    len += snprintf(tmp + len, sizeof(tmp) - len, "%s", (*ops)->name);
  }
 
  return mutt_str_dup(tmp);
}

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compress_get_ops()

const struct ComprOps * compress_get_ops

(

const char *

compr

)

Get the API functions for a compress backend.

Parameters

compr

Name of the backend

Return values

ptr	Set of function pointers

Definition at line 80 of file compress.c.

{
  const struct ComprOps **ops = CompressOps;
 
  if (!compr || !*compr)
    return *ops;
 
  for (; *ops; ops++)
  {
    if (strcmp(compr, (*ops)->name) == 0)
      break;
  }
 
  return *ops;
}

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Variable Documentation

CompressOps

const struct ComprOps* CompressOps[]

static

Initial value:

= {
 
  &compr_lz4_ops,
 
 
  &compr_zlib_ops,
 
 
  &compr_zstd_ops,
 
  NULL,
}

Backend implementations.

Definition at line 38 of file compress.c.