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move nbt_prim_tagsize to header, since it's a pretty useful funciton.

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Quinn
2025-07-23 12:12:36 +02:00
parent 8102dd6a71
commit 9fd920908e
2 changed files with 16 additions and 13 deletions
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25
src/dat/nbt.c
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@@ -29,19 +29,6 @@ static int nbt_cmpstr(char const *restrict matstr, u8 const *restrict buf) {
return strncmp(str, matstr, len); return strncmp(str, matstr, len);
} }
/* gets the tag size of primitive types, returns `>0` on success, `<0` on failure */
int nbt_prim_tagsize(u8 tag) {
switch (tag) {
case NBT_I8: return 1;
case NBT_I16: return 2;
case NBT_I32: return 4;
case NBT_I64: return 8;
case NBT_F32: return 4;
case NBT_F64: return 8;
default: return -1;
}
}
/* returns the (expected) pointer of the tag following this one. /* returns the (expected) pointer of the tag following this one.
* `NBT_COMPOUND` and `NBT_END` tags are not valid for this function and should be handled separately. * `NBT_COMPOUND` and `NBT_END` tags are not valid for this function and should be handled separately.
* `NULL` is returned if anything went wrong. */ * `NULL` is returned if anything went wrong. */
@@ -99,3 +86,15 @@ int nbt_proc(void **restrict datout, u8 const *restrict buf, size_t len) {
// TODO: finish function // TODO: finish function
return 0; return 0;
} }
int nbt_prim_tagsize(u8 tag) {
switch (tag) {
case NBT_I8: return 1;
case NBT_I16: return 2;
case NBT_I32: return 4;
case NBT_I64: return 8;
case NBT_F32: return 4;
case NBT_F64: return 8;
default: return -1;
}
}

4
src/dat/nbt.h
View File

@@ -5,6 +5,7 @@
#include <stdbool.h> #include <stdbool.h>
#include <stdlib.h> #include <stdlib.h>
#include "../util/atrb.h"
#include "../util/types.h" #include "../util/types.h"
/* NBT (named binary tag) is a tree data structure. Tags have a numeric type ID, name and a payload. /* NBT (named binary tag) is a tree data structure. Tags have a numeric type ID, name and a payload.
@@ -34,3 +35,6 @@ enum nbt_tagid {
}; };
int nbt_proc(void **restrict datout, u8 const *restrict buf, size_t len); int nbt_proc(void **restrict datout, u8 const *restrict buf, size_t len);
/* gets the tag size of primitive types, returns `>0` on success, `<0` on failure */
atrb_const int nbt_prim_tagsize(u8 tag);