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/* libdeps.c - Retrieve and calculate dependencies for deborphan.
Copyright (C) 2000, 2001, 2002, 2003 Cris van Pelt
Copyright (C) 2003, 2004, 2005, 2006 Peter Palfrader
Copyright (C) 2009 Carsten Hey
$Id: libdeps.c 934 2012-06-30 18:42:31Z carsten $
Distributed under the terms of the Artistic License.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <regex.h>
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <deborphan.h>
#ifdef USE_XALLOC
# include <xalloc.h>
#endif
extern int options[];
static int
print_arch_suffix(pkg_info *pkg)
{
if (pkg->self.arch)
return printf(":%s", pkg->self.arch);
return 0;
}
/* For each package found, this scans the `package' structure, to
* see if anything depends on it.
*/
void
check_lib_deps(pkg_info * package, pkg_info * current_pkg, int print_suffix)
{
int deps, prov, no_dep_found = 1, search_found = 1;
int i;
static int j;
extern dep *search_for;
if (options[FIND_CONFIG] && !current_pkg->config)
return;
if (current_pkg->hold)
return;
if (current_pkg->priority < options[PRIORITY])
return;
if (keep && mustkeep(current_pkg->self))
return;
if (!is_library(current_pkg, options[SEARCH_LIBDEVEL]))
return;
if (options[SEARCH]) {
search_found = 0;
/* Count packages. Just once. */
if (!j)
for ( ; search_for[j].name; j++);
/* Search for the package, and clear it from the list if it is
found. */
for (i = 0; search_for[i].name; i++) {
if (strcmp(search_for[i].name, current_pkg->self.name) == 0) {
if (search_for[i].arch == NULL
|| (current_pkg->self.arch != NULL
&& (strcmp(search_for[i].arch,
current_pkg->self.arch) == 0))) {
--j;
search_for[i].name = search_for[j].name;
search_for[i].arch = search_for[j].arch;
search_for[i].namehash = search_for[j].namehash;
search_for[j].name = NULL;
search_found = 1;
break;
}
}
}
}
if (!search_found)
return;
if (options[SHOW_DEPS]) {
printf("%s", current_pkg->self.name);
if (print_suffix)
print_arch_suffix(current_pkg);
if (options[SHOW_SECTION] > 0)
printf(" (%s", current_pkg->section);
if (options[SHOW_PRIORITY])
printf(" - %s", priority_to_string(current_pkg->priority));
if (options[SHOW_SIZE])
printf(", %ld", current_pkg->installed_size);
if (options[SHOW_SECTION] > 0)
printf(")");
printf("\n");
}
/* Search all (installed) packages for dependencies.
*/
for (; package && no_dep_found; package = package->next) {
/* We assume that a multiarch-dependency pkg:arch is only satisfied by
* a package that has pkg as package name or provides pkg to make an
* older deborphan compatible with future versions of the multiarch
* spec. To be able to ignore multiarch self-dependencies safely, we
* would further need to assume these are always an error (which is the
* case for non-multiarch dependencies). The latter assumtion might
* not be safe and being able to check if a dependency is arch
* qualified would require further hacking in this old code only to
* display buggy orphaned packages ... so we do not ignore
* self-dependencies at all for now. */
#if 0
/* Let's ignore cases where a package depends on itself. See #366028 */
if (pkgcmp(current_pkg->self, package->self))
continue;
#endif
for (deps = 0; deps < package->deps_cnt && no_dep_found; deps++) {
for (prov = 0; prov < current_pkg->provides_cnt && no_dep_found;
prov++) {
if (pkgcmp(current_pkg->provides[prov], package->deps[deps])) {
if (options[SHOW_DEPS]) {
printf(" %s", package->self.name);
if (print_suffix)
print_arch_suffix(package);
putchar('\n');
}
else
no_dep_found = 0;
}
}
if (pkgcmp(current_pkg->self, package->deps[deps])) {
if (options[SHOW_DEPS]) {
printf(" %s", package->self.name);
if (print_suffix)
print_arch_suffix(package);
putchar('\n');
}
else
no_dep_found = 0;
}
}
}
if (no_dep_found && (!options[SHOW_DEPS])) {
size_t prntd;
if (options[SHOW_SIZE])
printf("%10ld ", current_pkg->installed_size);
if (options[SHOW_SECTION] > 0)
printf("%-25s ", current_pkg->section);
prntd = printf("%s", current_pkg->self.name);
if (print_suffix)
prntd += print_arch_suffix(current_pkg);
if (options[SHOW_PRIORITY]) {
size_t sz = 24;
if (print_suffix)
sz += 6;
while (sz > prntd++)
putchar(' ');
printf(" %s", priority_to_string(current_pkg->priority));
}
printf("\n");
}
}
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