xbps/lib/transaction_package_replace.c
Juan RP 43c9497feb Introduce xbps_array_add_first() to insert obj at the head of array.
The behaviour of this routine mimics the existing xbps_array_add() with
the difference that stored objects are moved to the right to insert
our object as the first element on the array.

Use this to add replaced packages in the transaction array at the head
rather than at the end, to preserve the proper sorting order.
2014-11-13 15:18:21 +01:00

136 lines
4.3 KiB
C

/*-
* Copyright (c) 2011-2014 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 <unistd.h>
#include <libgen.h>
#include "xbps_api_impl.h"
int HIDDEN
xbps_transaction_package_replace(struct xbps_handle *xhp, xbps_array_t pkgs)
{
for (unsigned int i = 0; i < xbps_array_count(pkgs); i++) {
xbps_array_t replaces;
xbps_object_t obj, obj2;
xbps_object_iterator_t iter;
const char *pkgver;
char *pkgname;
obj = xbps_array_get(pkgs, i);
replaces = xbps_dictionary_get(obj, "replaces");
if (replaces == NULL || xbps_array_count(replaces) == 0)
continue;
iter = xbps_array_iterator(replaces);
assert(iter);
xbps_dictionary_get_cstring_nocopy(obj, "pkgver", &pkgver);
pkgname = xbps_pkg_name(pkgver);
assert(pkgname);
while ((obj2 = xbps_object_iterator_next(iter)) != NULL) {
xbps_dictionary_t instd, reppkgd;
const char *tract, *pattern, *curpkgver;
char *curpkgname;
bool instd_auto = false;
pattern = xbps_string_cstring_nocopy(obj2);
/*
* Find the installed package that matches the pattern
* to be replaced.
*/
if (((instd = xbps_pkgdb_get_pkg(xhp, pattern)) == NULL) &&
((instd = xbps_pkgdb_get_virtualpkg(xhp, pattern)) == NULL))
continue;
xbps_dictionary_get_cstring_nocopy(instd,
"pkgver", &curpkgver);
curpkgname = xbps_pkg_name(curpkgver);
assert(curpkgname);
/*
* Check that we are not replacing the same package,
* due to virtual packages.
*/
if (strcmp(pkgname, curpkgname) == 0) {
free(curpkgname);
continue;
}
/*
* Make sure to not add duplicates.
*/
xbps_dictionary_get_bool(instd, "automatic-install", &instd_auto);
reppkgd = xbps_find_pkg_in_array(pkgs, curpkgname, NULL);
if (reppkgd) {
xbps_dictionary_get_cstring_nocopy(reppkgd,
"transaction", &tract);
if (strcmp(tract, "remove") == 0)
continue;
/*
* Package contains replaces="pkgpattern", but the
* package that should be replaced is also in the
* transaction and it's going to be updated.
*/
xbps_dictionary_set_bool(reppkgd,
"automatic-install", instd_auto);
xbps_dictionary_set_bool(reppkgd,
"skip-obsoletes", true);
xbps_array_replace_dict_by_name(pkgs,
reppkgd, curpkgname);
continue;
}
/*
* If new package is providing a virtual package to the
* package that we want to replace we should respect
* the automatic-install object.
*/
if (xbps_match_virtual_pkg_in_dict(obj, pattern)) {
xbps_dictionary_set_bool(obj,
"automatic-install", instd_auto);
}
xbps_dbg_printf(xhp,
"Package `%s' will be replaced by `%s', "
"matched with `%s'\n", curpkgver, pkgver, pattern);
/*
* Add package dictionary into the transaction and mark
* it as to be "removed".
*/
xbps_dictionary_set_cstring_nocopy(instd,
"transaction", "remove");
if (!xbps_array_add_first(pkgs, instd))
return EINVAL;
free(curpkgname);
}
xbps_object_iterator_release(iter);
free(pkgname);
}
return 0;
}