1 files changed, 125 insertions, 0 deletions
diff --git a/libfdisk/src/version.c b/libfdisk/src/version.c
new file mode 100644
index 0000000..9d84b4c
--- /dev/null
+++ b/libfdisk/src/version.c
@@ -0,0 +1,125 @@
+/*
+ * version.c - Return the version of the library
+ *
+ * Copyright (C) 2015 Karel Zak <kzak@redhat.com>
+ *
+ */
+
+/**
+ * SECTION: version-utils
+ * @title: Version functions
+ * @short_description: functions to get the library version.
+ */
+
+#include <ctype.h>
+
+#include "fdiskP.h"
+
+static const char *lib_version = LIBFDISK_VERSION;
+static const char *lib_features[] = {
+#if !defined(NDEBUG)	/* libc assert.h stuff */
+	"assert",
+#endif
+	"debug",	/* always enabled */
+	NULL
+};
+
+/**
+ * fdisk_parse_version_string:
+ * @ver_string: version string (e.g "2.18.0")
+ *
+ * Returns: release version code.
+ */
+int fdisk_parse_version_string(const char *ver_string)
+{
+	const char *cp;
+	int version = 0;
+
+	assert(ver_string);
+
+	for (cp = ver_string; *cp; cp++) {
+		if (*cp == '.')
+			continue;
+		if (!isdigit(*cp))
+			break;
+		version = (version * 10) + (*cp - '0');
+	}
+	return version;
+}
+
+/**
+ * fdisk_get_library_version:
+ * @ver_string: return pointer to the static library version string if not NULL
+ *
+ * Returns: release version number.
+ */
+int fdisk_get_library_version(const char **ver_string)
+{
+	if (ver_string)
+		*ver_string = lib_version;
+
+	return fdisk_parse_version_string(lib_version);
+}
+
+/**
+ * fdisk_get_library_features:
+ * @features: returns a pointer to the static array of strings, the array is
+ *            terminated by NULL.
+ *
+ * Returns: number of items in the features array not including the last NULL,
+ *          or less than zero in case of error
+ *
+ * Example:
+ * <informalexample>
+ *   <programlisting>
+ *	const char *features;
+ *
+ *	fdisk_get_library_features(&features);
+ *	while (features && *features)
+ *		printf("%s\n", *features++);
+ *   </programlisting>
+ * </informalexample>
+ *
+ */
+int fdisk_get_library_features(const char ***features)
+{
+	if (!features)
+		return -EINVAL;
+
+	*features = lib_features;
+	return ARRAY_SIZE(lib_features) - 1;
+}
+
+#ifdef TEST_PROGRAM
+static int test_version(struct fdisk_test *ts, int argc, char *argv[])
+{
+	const char *ver;
+	const char **features;
+
+	fdisk_get_library_version(&ver);
+
+	printf("Library version: %s\n", ver);
+	printf("Library API version: " LIBFDISK_VERSION "\n");
+	printf("Library features:");
+
+	fdisk_get_library_features(&features);
+	while (features && *features)
+		printf(" %s", *features++);
+
+	if (fdisk_get_library_version(NULL) ==
+			fdisk_parse_version_string(LIBFDISK_VERSION))
+		return 0;
+
+	return -1;
+}
+
+int main(int argc, char *argv[])
+{
+	struct fdisk_test ts[] = {
+		{ "--print", test_version, "print versions" },
+		{ NULL }
+	};
+
+	return fdisk_run_test(ts, argc, argv);
+}
+#endif