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vm: implement buffer_save_ext #146

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Merged
MrPowerGamerBR merged 2 commits into from
May 23, 2026
Merged

vm: implement buffer_save_ext #146

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32f6943
vm: implement buffer_save_ext
cobaltgit May 21, 2026
68b8dcf
Merge branch 'main' into buffer_save_ext
MrPowerGamerBR May 23, 2026
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26 changes: 26 additions & 0 deletions src/vm_builtins.c
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Original file line number Diff line number Diff line change
Expand Up @@ -6378,6 +6378,31 @@ static RValue builtin_buffer_save(MAYBE_UNUSED VMContext* ctx, RValue* args, MAY
return RValue_makeUndefined();
}

static RValue builtin_buffer_save_ext(MAYBE_UNUSED VMContext* ctx, RValue* args, MAYBE_UNUSED int32_t argCount) {
Runner* runner = ctx->runner;
FileSystem* fs = runner->fileSystem;
int32_t id = RValue_toInt32(args[0]);
char* filename = RValue_toString(args[1]);
int32_t offset = RValue_toInt32(args[2]);
size_t size = RValue_toInt32(args[3]);
GmlBuffer* buf = gmlBufferGet(runner, id);

if (buf != nullptr && size > 0 && offset >= 0) {
int32_t maxBoundary = (buf->type == GML_BUFFER_GROW) ? buf->usedSize : buf->size;

if (offset < maxBoundary) {
if (offset + size > maxBoundary) {
size = maxBoundary - offset;
}

fs->vtable->writeFileBinary(fs, filename, buf->data + offset, size);
}
}

free(filename);
return RValue_makeUndefined();
}

static RValue builtin_buffer_base64_encode(MAYBE_UNUSED VMContext* ctx, RValue* args, MAYBE_UNUSED int32_t argCount) {
Runner* runner = ctx->runner;
if (3 > argCount) return RValue_makeOwnedString(safeStrdup(""));
Expand Down Expand Up @@ -11425,6 +11450,7 @@ void VMBuiltins_registerAll(VMContext* ctx) {
VM_registerBuiltin(ctx, "buffer_get_size", builtin_buffer_get_size);
VM_registerBuiltin(ctx, "buffer_load", builtin_buffer_load);
VM_registerBuiltin(ctx, "buffer_save", builtin_buffer_save);
VM_registerBuiltin(ctx, "buffer_save_ext", builtin_buffer_save_ext);
VM_registerBuiltin(ctx, "buffer_base64_encode", builtin_buffer_base64_encode);
VM_registerBuiltin(ctx, "buffer_base64_decode", builtin_buffer_base64_decode);
VM_registerBuiltin(ctx, "base64_encode", builtin_base64_encode);
Expand Down
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