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glib-aux: make code in nm_uuid_is_valid_nm() clearer

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Setting `NM_SET_OUT(out_normalized, !is_normalized)` is correct, but looks
odd and required a long code comment.

Try to write the same code differently, I think it is easier to
read and requires less comment to explain.
This commit is contained in:
Thomas Haller
2022-06-24 10:23:44 +02:00
parent e3a0157141
commit 8f80f3d446
1 changed files with 12 additions and 15 deletions
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27
src/libnm-glib-aux/nm-uuid.c
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@@ -202,28 +202,25 @@ nm_uuid_is_valid_nm(const char *str,
/* @out_normalized_str is only set, if normalization was necessary
* and possible. The caller cannot request @out_normalized_str, without
* also getting @out_normalized. */
* also requesting @out_normalized. Otherwise, they couldn't know whether
* a normalized string was returned. */
nm_assert(!out_normalized_str || out_normalized);
if (!str)
return FALSE;
if (nm_uuid_parse_full(str, &uuid, &is_normalized)) {
/* Note that:
* @is_normalized means that "str" contains a normalized UUID
* @out_normalized: indicates whether str requires normalization
* and whether @out_normalized_str was set to contain the normalized
* UUID.
* With this, we get the slightly odd assignment: */
NM_SET_OUT(out_normalized, !is_normalized);
if (!is_normalized && out_normalized_str) {
/* we need to normalize the UUID */
nm_uuid_unparse(&uuid, out_normalized_str);
if (is_normalized) {
/* @str is already normalized. No need to normalize again, so
* @out_normalized is FALSE. */
NM_SET_OUT(out_normalized, FALSE);
} else {
NM_SET_OUT(out_normalized, TRUE);
if (out_normalized_str) {
/* we need to normalize the UUID */
nm_uuid_unparse(&uuid, out_normalized_str);
}
}
/* regardless whether normalization was necessary, the UUID is
* essentially valid. */
return TRUE;
}