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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#include <stdio.h>
#include "analyze-compare-versions.h"
#include "compare-operator.h"
#include "macro.h"
#include "string-util.h"
#include "strv.h"
int verb_compare_versions(int argc, char *argv[], void *userdata) {
const char *v1 = ASSERT_PTR(argv[1]), *v2 = ASSERT_PTR(argv[argc-1]);
int r;
assert(IN_SET(argc, 3, 4));
assert(argv);
/* We only output a warning on invalid version strings (instead of failing), since the comparison
* functions try to handle invalid strings gracefully and it's still interesting to see what the
* comparison result will be. */
if (!version_is_valid_versionspec(v1))
log_warning("Version string 1 contains disallowed characters, they will be treated as separators: %s", v1);
if (!version_is_valid_versionspec(v2))
log_warning("Version string 2 contains disallowed characters, they will be treated as separators: %s", v2);
if (argc == 3) {
r = strverscmp_improved(v1, v2);
printf("%s %s %s\n",
isempty(v1) ? "''" : v1,
comparison_operator(r),
isempty(v2) ? "''" : v2);
/* This matches the exit convention used by rpmdev-vercmp.
* We don't use named values because 11 and 12 don't have names. */
return r < 0 ? 12 : r > 0 ? 11 : 0;
} else {
const char *op = ASSERT_PTR(argv[2]);
CompareOperator operator;
assert(argc == 4);
operator = parse_compare_operator(&op, COMPARE_ALLOW_TEXTUAL);
if (operator < 0 || !isempty(op))
return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "Unknown operator \"%s\".", op);
r = version_or_fnmatch_compare(operator, v1, v2);
if (r < 0)
return log_error_errno(r, "Failed to compare versions: %m");
return r ? EXIT_SUCCESS : EXIT_FAILURE;
}
}
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