mirror of
https://github.com/VCMP-SqMod/SqMod.git
synced 2024-11-08 08:47:17 +01:00
278 lines
7.2 KiB
C++
278 lines
7.2 KiB
C++
/* see copyright notice in squirrel.h */
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#include <new>
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#include <squirrel.h>
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#include <sqstdio.h>
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#include <string.h>
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#include <sqstdblob.h>
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#include "sqstdstream.h"
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#include "sqstdblobimpl.h"
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#define SQSTD_BLOB_TYPE_TAG (SQSTD_STREAM_TYPE_TAG | 0x00000002)
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//Blob
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#define SETUP_BLOB(v) \
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SQBlob *self = NULL; \
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{ if(SQ_FAILED(sq_getinstanceup(v,1,(SQUserPointer*)&self,(SQUserPointer)SQSTD_BLOB_TYPE_TAG))) \
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return sq_throwerror(v,_SC("invalid type tag")); } \
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if(!self || !self->IsValid()) \
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return sq_throwerror(v,_SC("the blob is invalid"));
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static SQInteger _blob_resize(HSQUIRRELVM v)
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{
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SETUP_BLOB(v);
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SQInteger size;
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sq_getinteger(v,2,&size);
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if(!self->Resize(size))
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return sq_throwerror(v,_SC("resize failed"));
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return 0;
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}
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static void __swap_dword(unsigned int *n)
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{
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*n=(unsigned int)(((*n&0xFF000000)>>24) |
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((*n&0x00FF0000)>>8) |
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((*n&0x0000FF00)<<8) |
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((*n&0x000000FF)<<24));
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}
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static void __swap_word(unsigned short *n)
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{
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*n=(unsigned short)((*n>>8)&0x00FF)| ((*n<<8)&0xFF00);
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}
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static SQInteger _blob_swap4(HSQUIRRELVM v)
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{
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SETUP_BLOB(v);
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SQInteger num=(self->Len()-(self->Len()%4))>>2;
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unsigned int *t=(unsigned int *)self->GetBuf();
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for(SQInteger i = 0; i < num; i++) {
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__swap_dword(&t[i]);
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}
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return 0;
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}
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static SQInteger _blob_swap2(HSQUIRRELVM v)
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{
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SETUP_BLOB(v);
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SQInteger num=(self->Len()-(self->Len()%2))>>1;
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unsigned short *t = (unsigned short *)self->GetBuf();
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for(SQInteger i = 0; i < num; i++) {
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__swap_word(&t[i]);
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}
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return 0;
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}
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static SQInteger _blob__set(HSQUIRRELVM v)
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{
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SETUP_BLOB(v);
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SQInteger idx,val;
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sq_getinteger(v,2,&idx);
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sq_getinteger(v,3,&val);
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if(idx < 0 || idx >= self->Len())
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return sq_throwerror(v,_SC("index out of range"));
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((unsigned char *)self->GetBuf())[idx] = (unsigned char) val;
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sq_push(v,3);
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return 1;
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}
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static SQInteger _blob__get(HSQUIRRELVM v)
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{
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SETUP_BLOB(v);
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SQInteger idx;
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sq_getinteger(v,2,&idx);
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if(idx < 0 || idx >= self->Len())
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return sq_throwerror(v,_SC("index out of range"));
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sq_pushinteger(v,((unsigned char *)self->GetBuf())[idx]);
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return 1;
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}
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static SQInteger _blob__nexti(HSQUIRRELVM v)
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{
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SETUP_BLOB(v);
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if(sq_gettype(v,2) == OT_NULL) {
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sq_pushinteger(v, 0);
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return 1;
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}
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SQInteger idx;
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if(SQ_SUCCEEDED(sq_getinteger(v, 2, &idx))) {
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if(idx+1 < self->Len()) {
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sq_pushinteger(v, idx+1);
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return 1;
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}
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sq_pushnull(v);
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return 1;
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}
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return sq_throwerror(v,_SC("internal error (_nexti) wrong argument type"));
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}
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static SQInteger _blob__typeof(HSQUIRRELVM v)
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{
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sq_pushstring(v,_SC("blob"),-1);
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return 1;
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}
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static SQInteger _blob_releasehook(SQUserPointer p, SQInteger SQ_UNUSED_ARG(size))
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{
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SQBlob *self = (SQBlob*)p;
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self->~SQBlob();
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sq_free(self,sizeof(SQBlob));
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return 1;
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}
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static SQInteger _blob_constructor(HSQUIRRELVM v)
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{
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SQInteger nparam = sq_gettop(v);
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SQInteger size = 0;
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if(nparam == 2) {
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sq_getinteger(v, 2, &size);
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}
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if(size < 0) return sq_throwerror(v, _SC("cannot create blob with negative size"));
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//SQBlob *b = new SQBlob(size);
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SQBlob *b = new (sq_malloc(sizeof(SQBlob)))SQBlob(size);
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if(SQ_FAILED(sq_setinstanceup(v,1,b))) {
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b->~SQBlob();
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sq_free(b,sizeof(SQBlob));
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return sq_throwerror(v, _SC("cannot create blob"));
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}
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sq_setreleasehook(v,1,_blob_releasehook);
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return 0;
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}
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static SQInteger _blob__cloned(HSQUIRRELVM v)
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{
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SQBlob *other = NULL;
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{
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if(SQ_FAILED(sq_getinstanceup(v,2,(SQUserPointer*)&other,(SQUserPointer)SQSTD_BLOB_TYPE_TAG)))
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return SQ_ERROR;
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}
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//SQBlob *thisone = new SQBlob(other->Len());
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SQBlob *thisone = new (sq_malloc(sizeof(SQBlob)))SQBlob(other->Len());
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memcpy(thisone->GetBuf(),other->GetBuf(),thisone->Len());
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if(SQ_FAILED(sq_setinstanceup(v,1,thisone))) {
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thisone->~SQBlob();
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sq_free(thisone,sizeof(SQBlob));
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return sq_throwerror(v, _SC("cannot clone blob"));
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}
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sq_setreleasehook(v,1,_blob_releasehook);
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return 0;
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}
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#define _DECL_BLOB_FUNC(name,nparams,typecheck) {_SC(#name),_blob_##name,nparams,typecheck}
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static const SQRegFunction _blob_methods[] = {
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_DECL_BLOB_FUNC(constructor,-1,_SC("xn")),
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_DECL_BLOB_FUNC(resize,2,_SC("xn")),
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_DECL_BLOB_FUNC(swap2,1,_SC("x")),
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_DECL_BLOB_FUNC(swap4,1,_SC("x")),
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_DECL_BLOB_FUNC(_set,3,_SC("xnn")),
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_DECL_BLOB_FUNC(_get,2,_SC("xn")),
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_DECL_BLOB_FUNC(_typeof,1,_SC("x")),
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_DECL_BLOB_FUNC(_nexti,2,_SC("x")),
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_DECL_BLOB_FUNC(_cloned,2,_SC("xx")),
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{NULL,(SQFUNCTION)0,0,NULL}
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};
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//GLOBAL FUNCTIONS
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static SQInteger _g_blob_casti2f(HSQUIRRELVM v)
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{
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SQInteger i;
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sq_getinteger(v,2,&i);
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sq_pushfloat(v,*((const SQFloat *)&i));
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return 1;
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}
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static SQInteger _g_blob_castf2i(HSQUIRRELVM v)
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{
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SQFloat f;
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sq_getfloat(v,2,&f);
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sq_pushinteger(v,*((const SQInteger *)&f));
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return 1;
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}
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static SQInteger _g_blob_swap2(HSQUIRRELVM v)
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{
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SQInteger i;
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sq_getinteger(v,2,&i);
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short s=(short)i;
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sq_pushinteger(v,(s<<8)|((s>>8)&0x00FF));
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return 1;
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}
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static SQInteger _g_blob_swap4(HSQUIRRELVM v)
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{
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SQInteger i;
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sq_getinteger(v,2,&i);
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unsigned int t4 = (unsigned int)i;
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__swap_dword(&t4);
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sq_pushinteger(v,(SQInteger)t4);
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return 1;
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}
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static SQInteger _g_blob_swapfloat(HSQUIRRELVM v)
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{
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SQFloat f;
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sq_getfloat(v,2,&f);
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__swap_dword((unsigned int *)&f);
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sq_pushfloat(v,f);
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return 1;
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}
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#define _DECL_GLOBALBLOB_FUNC(name,nparams,typecheck) {_SC(#name),_g_blob_##name,nparams,typecheck}
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static const SQRegFunction bloblib_funcs[]={
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_DECL_GLOBALBLOB_FUNC(casti2f,2,_SC(".n")),
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_DECL_GLOBALBLOB_FUNC(castf2i,2,_SC(".n")),
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_DECL_GLOBALBLOB_FUNC(swap2,2,_SC(".n")),
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_DECL_GLOBALBLOB_FUNC(swap4,2,_SC(".n")),
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_DECL_GLOBALBLOB_FUNC(swapfloat,2,_SC(".n")),
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{NULL,(SQFUNCTION)0,0,NULL}
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};
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SQRESULT sqstd_getblob(HSQUIRRELVM v,SQInteger idx,SQUserPointer *ptr)
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{
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SQBlob *blob;
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if(SQ_FAILED(sq_getinstanceup(v,idx,(SQUserPointer *)&blob,(SQUserPointer)SQSTD_BLOB_TYPE_TAG)))
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return -1;
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*ptr = blob->GetBuf();
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return SQ_OK;
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}
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SQInteger sqstd_getblobsize(HSQUIRRELVM v,SQInteger idx)
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{
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SQBlob *blob;
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if(SQ_FAILED(sq_getinstanceup(v,idx,(SQUserPointer *)&blob,(SQUserPointer)SQSTD_BLOB_TYPE_TAG)))
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return -1;
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return blob->Len();
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}
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SQUserPointer sqstd_createblob(HSQUIRRELVM v, SQInteger size)
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{
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SQInteger top = sq_gettop(v);
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sq_pushregistrytable(v);
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sq_pushstring(v,_SC("std_blob"),-1);
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if(SQ_SUCCEEDED(sq_get(v,-2))) {
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sq_remove(v,-2); //removes the registry
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sq_push(v,1); // push the this
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sq_pushinteger(v,size); //size
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SQBlob *blob = NULL;
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if(SQ_SUCCEEDED(sq_call(v,2,SQTrue,SQFalse))
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&& SQ_SUCCEEDED(sq_getinstanceup(v,-1,(SQUserPointer *)&blob,(SQUserPointer)SQSTD_BLOB_TYPE_TAG))) {
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sq_remove(v,-2);
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return blob->GetBuf();
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}
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}
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sq_settop(v,top);
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return NULL;
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}
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SQRESULT sqstd_register_bloblib(HSQUIRRELVM v)
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{
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return declare_stream(v,_SC("blob"),(SQUserPointer)SQSTD_BLOB_TYPE_TAG,_SC("std_blob"),_blob_methods,bloblib_funcs);
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}
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