/*
* Concatenate a directory path and a filename. Note that this function
* currently does NOT handle the case where file itself contains
* directory components (except on Unix platforms, because it is trivial.)
*/
char *nasm_catfile(const char *dir, const char *file)
{
#ifndef catsep
return nasm_strcat(dir, file);
#else
size_t dl = strlen(dir);
size_t fl = strlen(file);
char *p;
bool dosep = true;
if (!dl || ismatch(separators, dir[dl-1])) {
/* No separator necessary */
dosep = false;
}
p = nasm_malloc(dl + fl + dosep + 1);
memcpy(p, dir, dl);
p += dl;
if (dosep)
*p++ = catsep;
memcpy(p, file, fl+1);
return p;
#endif
}
/*
* Internal routine: finds the `union label' corresponding to the
* given label name. Creates a new one, if it isn't found, and if
* `create' is true.
*/
static union label *find_label(const char *label, bool create, bool *created)
{
union label *lptr, **lpp;
char *label_str = NULL;
struct hash_insert ip;
nasm_assert(label != NULL);
if (islocal(label))
label = label_str = nasm_strcat(prevlabel, label);
lpp = (union label **) hash_find(<ab, label, &ip);
lptr = lpp ? *lpp : NULL;
if (lptr || !create) {
if (created)
*created = false;
return lptr;
}
/* Create a new label... */
if (lfree->admin.movingon == END_BLOCK) {
/*
* must allocate a new block
*/
lfree->admin.next = nasm_malloc(LBLK_SIZE);
lfree = lfree->admin.next;
init_block(lfree);
}
if (created)
*created = true;
nasm_zero(*lfree);
lfree->defn.label = perm_copy(label);
lfree->defn.subsection = NO_SEG;
if (label_str)
nasm_free(label_str);
hash_add(&ip, lfree->defn.label, lfree);
return lfree++;
}
