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add nbt_proctag to nbt.h

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also changed the `out` parameter from `u8` to `void`, to be more
acurrate that it may point to whatever.
This commit is contained in:
Quinn
2025-08-23 23:10:26 +02:00
parent 89ceb5263c
commit 3cdee8b40c
2 changed files with 5 additions and 2 deletions
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4
src/dat/nbt.c
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@@ -131,12 +131,12 @@ MALLOC static void *nbt_procarr(const u8 *restrict buf, i32 nmem, uint size) {
// TODO: not actually doing anything
/* readies the output data for export, returns the new buffer position, or `NULL` upon an error (may be out of bounds) */
static const u8 *nbt_proctag(const u8 *restrict buf, u8 *restrict out, u16 slen) {
const u8 *nbt_proctag(const u8 *restrict buf, u16 slen, void *restrict out) {
const u8 *ptr = buf + 3 + slen;
switch (*buf) {
// integral types
case NBT_I8: *out = *ptr; return ptr + 1;
case NBT_I8: *(u8 *)out = *ptr; return ptr + 1;
case NBT_I16: *(u16 *)out = be16toh(*(u16 *)ptr); return ptr + 2;
case NBT_I32: // fall through
case NBT_F32: *(u32 *)out = be16toh(*(u32 *)ptr); return ptr + 4;

3
src/dat/nbt.h
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@@ -54,5 +54,8 @@ struct nbt_procdat {
* `NULL` is returned upon failure, the otherwise returned pointer is not guaranteed to be valid. */
const u8 *nbt_nexttag(const u8 *restrict buf) NONNULL((1)) PURE;
/* Processes the tag entered in `buf`, `buf` is assumed */
const u8 *nbt_proctag(const u8 *restrict buf, u16 slen, void *restrict out) NONNULL((1, 3));
/* initialises a data structure used whilst processing the tags */
struct nbt_procdat nbt_initproc(struct nbt_path const *restrict pats, uint npats) NONNULL((1)) PURE;