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module_get_path_str: added comments

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Added comments to describe the behavior and ensure that this is correct
and resulting string is properly null-terminated.
This commit is contained in:
Martin Pulec
2022-02-21 17:08:01 +01:00
parent c8270d50a5
commit d1d9a1c9b5
1 changed files with 3 additions and 2 deletions
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5
src/module.c
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@@ -334,10 +334,11 @@ bool module_get_path_str(struct module *mod, char *buf, size_t buflen) {
if (sizeof(buf) + 1 + sizeof(cur_name) >= buflen) {
return false;
}
// move content of buf strlen(cur_name) right
if (strlen(buf) > 0) {
memmove(buf + strlen(cur_name) + 1, buf, strlen(buf) + 1);
buf[strlen(cur_name)] = '.';
} else {
buf[strlen(cur_name)] = '.'; // and separate with '.'
} else { // rightmost (first written) element
buf[strlen(cur_name)] = '\0';
}
memcpy(buf, cur_name, strlen(cur_name));