xbps/lib/regpkgs_dictionary.c
Juan RP 6256b34ccc Some changes that will appear in 0.5.0:
* Add proplib-0.4.1 source and use it in XBPS. This is to avoid
   an external dependency, so that we depend on the features of the
   internal library. This also means that proplib is not required anymore.

 * Added support to read/write gzip compressed plists by default, thanks
   to proplib-0.4 that gained new functionality.

That means that from now, XBPS will be able to write compressed gzip
plist files for all metadata related work. This will vastly reduce
bandwidth required for fetching remote repo's pkg index file and
binary packages.

--HG--
extra : convert_revision : xtraeme%40gmail.com-20100420122238-zcb85rudt9p34e10
2010-04-20 14:22:38 +02:00

99 lines
3.1 KiB
C

/*-
* Copyright (c) 2008-2009 Juan Romero Pardines.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <xbps_api.h>
/**
* @file lib/regpkgs_dictionary.c
* @brief Package register database routines
* @defgroup regpkgdb Package register database functions
*
* These functions will initialize and release (resources of)
* the registered packages database plist file (defined by XBPS_REGPKGDB).
*
* The returned dictionary by xbps_regpkgs_dictionary_init() uses
* the structure as shown in the next graph:
*
* @image html images/xbps_regpkgdb_dictionary.png
*
* Legend:
* - <b>Salmon filled box</b>: \a XBPS_REGPKGDB_PLIST file internalized.
* - <b>White filled box</b>: mandatory objects.
* - <b>Grey filled box</b>: optional objects.
* - <b>Green filled box</b>: possible value set in the object, only one
* of them is set.
*
* Text inside of white boxes are the key associated with the object, its
* data type is specified on its edge, i.e array, bool, integer, string,
* dictionary.
*/
static prop_dictionary_t regpkgs_dict;
static size_t regpkgs_refcount;
static bool regpkgs_initialized;
prop_dictionary_t
xbps_regpkgs_dictionary_init(void)
{
char *plist;
if (regpkgs_initialized == false) {
plist = xbps_xasprintf("%s/%s/%s", xbps_get_rootdir(),
XBPS_META_PATH, XBPS_REGPKGDB);
if (plist == NULL)
return NULL;
regpkgs_dict = prop_dictionary_internalize_from_zfile(plist);
if (regpkgs_dict == NULL) {
free(plist);
return NULL;
}
free(plist);
regpkgs_initialized = true;
DPRINTF(("%s: initialized ok.\n", __func__));
}
regpkgs_refcount++;
return regpkgs_dict;
}
void
xbps_regpkgs_dictionary_release(void)
{
if (--regpkgs_refcount > 0)
return;
prop_object_release(regpkgs_dict);
regpkgs_dict = NULL;
regpkgs_initialized = false;
DPRINTF(("%s: released ok.\n", __func__));
}