1 /* see copyright notice in squirrel.h */
9 #include "sqstdstream.h"
10 #include "sqstdblobimpl.h"
12 #define SETUP_STREAM(v) \
13 SQStream *self = NULL; \
14 if(SQ_FAILED(sq_getinstanceup(v,1,(SQUserPointer*)&self,(SQUserPointer)SQSTD_STREAM_TYPE_TAG))) \
15 return sq_throwerror(v,_SC("invalid type tag")); \
16 if(!self->IsValid()) \
17 return sq_throwerror(v,_SC("the stream is invalid"));
19 SQInteger _stream_readblob(HSQUIRRELVM v)
22 SQUserPointer data,blobp;
24 sq_getinteger(v,2,&size);
25 if(size > self->Len()) {
28 data = sq_getscratchpad(v,size);
29 res = self->Read(data,size);
31 return sq_throwerror(v,_SC("no data left to read"));
32 blobp = sqstd_createblob(v,res);
33 memcpy(blobp,data,res);
37 #define SAFE_READN(ptr,len) { \
38 if(self->Read(ptr,len) != len) return sq_throwerror(v,_SC("io error")); \
40 SQInteger _stream_readn(HSQUIRRELVM v)
44 sq_getinteger(v, 2, &format);
48 SAFE_READN(&i, sizeof(i));
54 SAFE_READN(&i, sizeof(i));
60 SAFE_READN(&s, sizeof(short));
66 SAFE_READN(&w, sizeof(unsigned short));
72 SAFE_READN(&c, sizeof(char));
78 SAFE_READN(&c, sizeof(unsigned char));
84 SAFE_READN(&f, sizeof(float));
90 SAFE_READN(&d, sizeof(double));
91 sq_pushfloat(v, (SQFloat)d);
95 return sq_throwerror(v, _SC("invalid format"));
100 SQInteger _stream_writeblob(HSQUIRRELVM v)
105 if(SQ_FAILED(sqstd_getblob(v,2,&data)))
106 return sq_throwerror(v,_SC("invalid parameter"));
107 size = sqstd_getblobsize(v,2);
108 if(self->Write(data,size) != size)
109 return sq_throwerror(v,_SC("io error"));
110 sq_pushinteger(v,size);
114 SQInteger _stream_writen(HSQUIRRELVM v)
117 SQInteger format, ti;
119 sq_getinteger(v, 3, &format);
123 sq_getinteger(v, 2, &ti);
125 self->Write(&i, sizeof(SQInteger));
130 sq_getinteger(v, 2, &ti);
132 self->Write(&i, sizeof(SQInt32));
137 sq_getinteger(v, 2, &ti);
139 self->Write(&s, sizeof(short));
144 sq_getinteger(v, 2, &ti);
145 w = (unsigned short)ti;
146 self->Write(&w, sizeof(unsigned short));
151 sq_getinteger(v, 2, &ti);
153 self->Write(&c, sizeof(char));
158 sq_getinteger(v, 2, &ti);
159 b = (unsigned char)ti;
160 self->Write(&b, sizeof(unsigned char));
165 sq_getfloat(v, 2, &tf);
167 self->Write(&f, sizeof(float));
172 sq_getfloat(v, 2, &tf);
174 self->Write(&d, sizeof(double));
178 return sq_throwerror(v, _SC("invalid format"));
183 SQInteger _stream_seek(HSQUIRRELVM v)
186 SQInteger offset, origin = SQ_SEEK_SET;
187 sq_getinteger(v, 2, &offset);
188 if(sq_gettop(v) > 2) {
190 sq_getinteger(v, 3, &t);
192 case 'b': origin = SQ_SEEK_SET; break;
193 case 'c': origin = SQ_SEEK_CUR; break;
194 case 'e': origin = SQ_SEEK_END; break;
195 default: return sq_throwerror(v,_SC("invalid origin"));
198 sq_pushinteger(v, self->Seek(offset, origin));
202 SQInteger _stream_tell(HSQUIRRELVM v)
205 sq_pushinteger(v, self->Tell());
209 SQInteger _stream_len(HSQUIRRELVM v)
212 sq_pushinteger(v, self->Len());
216 SQInteger _stream_flush(HSQUIRRELVM v)
220 sq_pushinteger(v, 1);
226 SQInteger _stream_eos(HSQUIRRELVM v)
230 sq_pushinteger(v, 1);
236 static SQRegFunction _stream_methods[] = {
237 _DECL_STREAM_FUNC(readblob,2,_SC("xn")),
238 _DECL_STREAM_FUNC(readn,2,_SC("xn")),
239 _DECL_STREAM_FUNC(writeblob,-2,_SC("xx")),
240 _DECL_STREAM_FUNC(writen,3,_SC("xnn")),
241 _DECL_STREAM_FUNC(seek,-2,_SC("xnn")),
242 _DECL_STREAM_FUNC(tell,1,_SC("x")),
243 _DECL_STREAM_FUNC(len,1,_SC("x")),
244 _DECL_STREAM_FUNC(eos,1,_SC("x")),
245 _DECL_STREAM_FUNC(flush,1,_SC("x")),
249 void init_streamclass(HSQUIRRELVM v)
251 sq_pushregistrytable(v);
252 sq_pushstring(v,_SC("std_stream"),-1);
253 if(SQ_FAILED(sq_get(v,-2))) {
254 sq_pushstring(v,_SC("std_stream"),-1);
255 sq_newclass(v,SQFalse);
256 sq_settypetag(v,-1,(SQUserPointer)SQSTD_STREAM_TYPE_TAG);
258 while(_stream_methods[i].name != 0) {
259 SQRegFunction &f = _stream_methods[i];
260 sq_pushstring(v,f.name,-1);
261 sq_newclosure(v,f.f,0);
262 sq_setparamscheck(v,f.nparamscheck,f.typemask);
268 sq_pushstring(v,_SC("stream"),-1);
269 sq_pushstring(v,_SC("std_stream"),-1);
275 sq_pop(v,1); //result
280 SQRESULT declare_stream(HSQUIRRELVM v,SQChar* name,SQUserPointer typetag,SQChar* reg_name,SQRegFunction *methods,SQRegFunction *globals)
282 if(sq_gettype(v,-1) != OT_TABLE)
283 return sq_throwerror(v,_SC("table expected"));
284 SQInteger top = sq_gettop(v);
287 sq_pushregistrytable(v);
288 sq_pushstring(v,reg_name,-1);
289 sq_pushstring(v,_SC("std_stream"),-1);
290 if(SQ_SUCCEEDED(sq_get(v,-3))) {
291 sq_newclass(v,SQTrue);
292 sq_settypetag(v,-1,typetag);
294 while(methods[i].name != 0) {
295 SQRegFunction &f = methods[i];
296 sq_pushstring(v,f.name,-1);
297 sq_newclosure(v,f.f,0);
298 sq_setparamscheck(v,f.nparamscheck,f.typemask);
299 sq_setnativeclosurename(v,-1,f.name);
307 while(globals[i].name!=0)
309 SQRegFunction &f = globals[i];
310 sq_pushstring(v,f.name,-1);
311 sq_newclosure(v,f.f,0);
312 sq_setparamscheck(v,f.nparamscheck,f.typemask);
313 sq_setnativeclosurename(v,-1,f.name);
317 //register the class in the target table
318 sq_pushstring(v,name,-1);
319 sq_pushregistrytable(v);
320 sq_pushstring(v,reg_name,-1);