void
pkg_blank(struct pkginfo *pkg)
{
pkg->status = stat_notinstalled;
pkg->eflag = eflag_ok;
pkg->want = want_unknown;
pkg->priority = pri_unknown;
pkg->otherpriority = NULL;
pkg->section = NULL;
dpkg_version_blank(&pkg->configversion);
pkg->files = NULL;
pkg->clientdata = NULL;
pkg->trigaw.head = NULL;
pkg->trigaw.tail = NULL;
pkg->othertrigaw_head = NULL;
pkg->trigpend_head = NULL;
pkgbin_blank(&pkg->installed);
pkgbin_blank(&pkg->available);
/* The architectures are reset here (instead of in pkgbin_blank),
* because they are part of the package specification, and needed
* for selections. */
pkg->installed.arch = dpkg_arch_get(arch_none);
pkg->installed.multiarch = multiarch_no;
pkg->available.arch = dpkg_arch_get(arch_none);
pkg->available.multiarch = multiarch_no;
}
void
pkgbin_blank(struct pkgbin *pkgbin)
{
pkgbin->essential = false;
pkgbin->depends = NULL;
pkgbin->pkgname_archqual = NULL;
pkgbin->description = NULL;
pkgbin->maintainer = NULL;
pkgbin->source = NULL;
pkgbin->installedsize = NULL;
pkgbin->bugs = NULL;
pkgbin->origin = NULL;
dpkg_version_blank(&pkgbin->version);
pkgbin->conffiles = NULL;
pkgbin->arbs = NULL;
}
int
cmpversions(const char *const *argv)
{
struct relationinfo {
const char *string;
/* These values are exit status codes, so 0 = true, 1 = false. */
int if_lesser, if_equal, if_greater;
int if_none_a, if_none_both, if_none_b;
};
static const struct relationinfo relationinfos[]= {
/* < = > !a!2!b */
{ "le", 0,0,1, 0,0,1 },
{ "lt", 0,1,1, 0,1,1 },
{ "eq", 1,0,1, 1,0,1 },
{ "ne", 0,1,0, 0,1,0 },
{ "ge", 1,0,0, 1,0,0 },
{ "gt", 1,1,0, 1,1,0 },
/* These treat an empty version as later than any version. */
{ "le-nl", 0,0,1, 1,0,0 },
{ "lt-nl", 0,1,1, 1,1,0 },
{ "ge-nl", 1,0,0, 0,0,1 },
{ "gt-nl", 1,1,0, 0,1,1 },
/* For compatibility with dpkg control file syntax. */
{ "<", 0,0,1, 0,0,1 },
{ "<=", 0,0,1, 0,0,1 },
{ "<<", 0,1,1, 0,1,1 },
{ "=", 1,0,1, 1,0,1 },
{ ">", 1,0,0, 1,0,0 },
{ ">=", 1,0,0, 1,0,0 },
{ ">>", 1,1,0, 1,1,0 },
{ NULL }
};
const struct relationinfo *rip;
struct dpkg_version a, b;
struct dpkg_error err;
int r;
if (!argv[0] || !argv[1] || !argv[2] || argv[3])
badusage(_("--compare-versions takes three arguments:"
" <version> <relation> <version>"));
for (rip=relationinfos; rip->string && strcmp(rip->string,argv[1]); rip++);
if (!rip->string) badusage(_("--compare-versions bad relation"));
if (*argv[0] && strcmp(argv[0],"<unknown>")) {
if (parseversion(&a, argv[0], &err) < 0) {
if (err.type == DPKG_MSG_WARN)
warning(_("version '%s' has bad syntax: %s"), argv[0], err.str);
else
ohshit(_("version '%s' has bad syntax: %s"), argv[0], err.str);
dpkg_error_destroy(&err);
}
} else {
dpkg_version_blank(&a);
}
if (*argv[2] && strcmp(argv[2],"<unknown>")) {
if (parseversion(&b, argv[2], &err) < 0) {
if (err.type == DPKG_MSG_WARN)
warning(_("version '%s' has bad syntax: %s"), argv[2], err.str);
else
ohshit(_("version '%s' has bad syntax: %s"), argv[2], err.str);
dpkg_error_destroy(&err);
}
} else {
dpkg_version_blank(&b);
}
if (!dpkg_version_is_informative(&a)) {
if (dpkg_version_is_informative(&b))
return rip->if_none_a;
else
return rip->if_none_both;
} else if (!dpkg_version_is_informative(&b)) {
return rip->if_none_b;
}
r = dpkg_version_compare(&a, &b);
debug(dbg_general,"cmpversions a=`%s' b=`%s' r=%d",
versiondescribe(&a,vdew_always),
versiondescribe(&b,vdew_always),
r);
if (r > 0)
return rip->if_greater;
else if (r < 0)
return rip->if_lesser;
else
return rip->if_equal;
}
