/**
* Return the singleton package instance from a package set.
*
* This means, if none are installed either an instance with native or
* all arch or the first if none found, the single installed instance,
* or NULL if more than one instance is installed.
*
* @param set The package set to use.
*
* @return The singleton package instance.
*/
struct pkginfo *
pkg_hash_get_singleton(struct pkgset *set)
{
struct pkginfo *pkg;
switch (pkgset_installed_instances(set)) {
case 0:
/* Pick an available candidate. */
for (pkg = &set->pkg; pkg; pkg = pkg->arch_next) {
const struct dpkg_arch *arch = pkg->available.arch;
if (arch->type == DPKG_ARCH_NATIVE || arch->type == DPKG_ARCH_ALL)
return pkg;
}
/* Or failing that, the first entry. */
return &set->pkg;
case 1:
for (pkg = &set->pkg; pkg; pkg = pkg->arch_next) {
if (pkg->status > PKG_STAT_NOTINSTALLED)
return pkg;
}
internerr("pkgset '%s' should have one installed instance", set->name);
default:
return NULL;
}
}
const char *
pkg_spec_is_illegal(struct pkg_spec *ps)
{
static char msg[1024];
const char *emsg;
if (!ps->name_is_pattern &&
(emsg = pkg_name_is_illegal(ps->name))) {
const char *arch_sep;
/* Only check for DPKG_ARCH_NONE, because for everything else
* we want to see the passed package specification, even if
* the architecture is empty. */
if (ps->arch->type == DPKG_ARCH_NONE)
arch_sep = "";
else
arch_sep = ":";
snprintf(msg, sizeof(msg),
_("illegal package name in specifier '%s%s%s': %s"),
ps->name, arch_sep, ps->arch->name, emsg);
return msg;
}
if ((!ps->arch_is_pattern && ps->arch->type == DPKG_ARCH_ILLEGAL) ||
ps->arch->type == DPKG_ARCH_EMPTY) {
emsg = dpkg_arch_name_is_illegal(ps->arch->name);
snprintf(msg, sizeof(msg),
_("illegal architecture name in specifier '%s:%s': %s"),
ps->name, ps->arch->name, emsg);
return msg;
}
/* If we have been requested a single instance, check that the
* package does not contain other instances. */
if (!ps->arch_is_pattern && ps->flags & PKG_SPEC_ARCH_SINGLE) {
struct pkgset *set;
set = pkg_db_find_set(ps->name);
/* Single instancing only applies with no architecture. */
if (ps->arch->type == DPKG_ARCH_NONE &&
pkgset_installed_instances(set) > 1) {
snprintf(msg, sizeof(msg),
_("ambiguous package name '%s' with more "
"than one installed instance"), ps->name);
return msg;
}
}
return NULL;
}
const char *
pkg_spec_is_illegal(struct pkg_spec *ps)
{
static char msg[1024];
const char *emsg;
if (!ps->name_is_pattern &&
(emsg = pkg_name_is_illegal(ps->name))) {
snprintf(msg, sizeof(msg),
_("illegal package name in specifier '%s%s%s': %s"),
ps->name,
(ps->arch->type != DPKG_ARCH_NONE) ? ":" : "",
ps->arch->name, emsg);
return msg;
}
if ((!ps->arch_is_pattern && ps->arch->type == DPKG_ARCH_ILLEGAL) ||
ps->arch->type == DPKG_ARCH_EMPTY) {
emsg = dpkg_arch_name_is_illegal(ps->arch->name);
snprintf(msg, sizeof(msg),
_("illegal architecture name in specifier '%s:%s': %s"),
ps->name, ps->arch->name, emsg);
return msg;
}
/* If we have been requested a single instance, check that the
* package does not contain other instances. */
if (!ps->arch_is_pattern && ps->flags & PKG_SPEC_ARCH_SINGLE) {
struct pkgset *set;
set = pkg_db_find_set(ps->name);
/* Single instancing only applies with no architecture. */
if (ps->arch->type == DPKG_ARCH_NONE &&
pkgset_installed_instances(set) > 1) {
snprintf(msg, sizeof(msg),
_("ambiguous package name '%s' with more "
"than one installed instance"), ps->name);
return msg;
}
}
return NULL;
}
static bool
pkg_spec_match_arch(struct pkg_spec *ps, struct pkginfo *pkg,
const struct dpkg_arch *arch)
{
if (ps->arch_is_pattern)
return (fnmatch(ps->arch->name, arch->name, 0) == 0);
else if (ps->arch->type != DPKG_ARCH_NONE) /* !arch_is_pattern */
return (ps->arch == arch);
/* No arch specified. */
switch (ps->flags & PKG_SPEC_ARCH_MASK) {
case PKG_SPEC_ARCH_SINGLE:
return pkgset_installed_instances(pkg->set) <= 1;
case PKG_SPEC_ARCH_WILDCARD:
return true;
default:
internerr("unknown PKG_SPEC_ARCH_* flags %d in pkg_spec",
ps->flags & PKG_SPEC_ARCH_MASK);
}
}
