1 /* see copyright notice in squirrel.h */
6 #include "sqstdstream.h"
8 #define SQSTD_FILE_TYPE_TAG (SQSTD_STREAM_TYPE_TAG | 0x00000001)
10 SQFILE sqstd_fopen(const SQChar *filename ,const SQChar *mode)
13 return (SQFILE)fopen(filename,mode);
15 return (SQFILE)_wfopen(filename,mode);
19 SQInteger sqstd_fread(void* buffer, SQInteger size, SQInteger count, SQFILE file)
21 return (SQInteger)fread(buffer,size,count,(FILE *)file);
24 SQInteger sqstd_fwrite(const SQUserPointer buffer, SQInteger size, SQInteger count, SQFILE file)
26 return (SQInteger)fwrite(buffer,size,count,(FILE *)file);
29 SQInteger sqstd_fseek(SQFILE file, SQInteger offset, SQInteger origin)
33 case SQ_SEEK_CUR: realorigin = SEEK_CUR; break;
34 case SQ_SEEK_END: realorigin = SEEK_END; break;
35 case SQ_SEEK_SET: realorigin = SEEK_SET; break;
36 default: return -1; //failed
38 return fseek((FILE *)file,(long)offset,(int)realorigin);
41 SQInteger sqstd_ftell(SQFILE file)
43 return ftell((FILE *)file);
46 SQInteger sqstd_fflush(SQFILE file)
48 return fflush((FILE *)file);
51 SQInteger sqstd_fclose(SQFILE file)
53 return fclose((FILE *)file);
56 SQInteger sqstd_feof(SQFILE file)
58 return feof((FILE *)file);
62 struct SQFile : public SQStream {
63 SQFile() { _handle = NULL; _owns = false;}
64 SQFile(SQFILE file, bool owns) { _handle = file; _owns = owns;}
65 virtual ~SQFile() { Close(); }
66 bool Open(const SQChar *filename ,const SQChar *mode) {
68 if( (_handle = sqstd_fopen(filename,mode)) ) {
75 if(_handle && _owns) {
76 sqstd_fclose(_handle);
81 SQInteger Read(void *buffer,SQInteger size) {
82 return sqstd_fread(buffer,1,size,_handle);
84 SQInteger Write(void *buffer,SQInteger size) {
85 return sqstd_fwrite(buffer,1,size,_handle);
88 return sqstd_fflush(_handle);
91 return sqstd_ftell(_handle);
94 SQInteger prevpos=Tell();
96 SQInteger size=Tell();
97 Seek(prevpos,SQ_SEEK_SET);
100 SQInteger Seek(SQInteger offset, SQInteger origin) {
101 return sqstd_fseek(_handle,offset,origin);
103 bool IsValid() { return _handle?true:false; }
104 bool EOS() { return Tell()==Len()?true:false;}
105 SQFILE GetHandle() {return _handle;}
111 static SQInteger _file__typeof(HSQUIRRELVM v)
113 sq_pushstring(v,_SC("file"),-1);
117 static SQInteger _file_releasehook(SQUserPointer p, SQInteger size)
119 SQFile *self = (SQFile*)p;
124 static SQInteger _file_constructor(HSQUIRRELVM v)
126 const SQChar *filename,*mode;
130 if(sq_gettype(v,2) == OT_STRING && sq_gettype(v,3) == OT_STRING) {
131 sq_getstring(v, 2, &filename);
132 sq_getstring(v, 3, &mode);
133 newf = sqstd_fopen(filename, mode);
134 if(!newf) return sq_throwerror(v, _SC("cannot open file"));
135 } else if(sq_gettype(v,2) == OT_USERPOINTER) {
136 owns = !(sq_gettype(v,3) == OT_NULL);
137 sq_getuserpointer(v,2,&newf);
139 return sq_throwerror(v,_SC("wrong parameter"));
141 f = new SQFile(newf,owns);
142 if(SQ_FAILED(sq_setinstanceup(v,1,f))) {
144 return sq_throwerror(v, _SC("cannot create blob with negative size"));
146 sq_setreleasehook(v,1,_file_releasehook);
151 #define _DECL_FILE_FUNC(name,nparams,typecheck) {_SC(#name),_file_##name,nparams,typecheck}
152 static SQRegFunction _file_methods[] = {
153 _DECL_FILE_FUNC(constructor,3,_SC("x")),
154 _DECL_FILE_FUNC(_typeof,1,_SC("x")),
160 SQRESULT sqstd_createfile(HSQUIRRELVM v, SQFILE file,SQBool own)
162 SQInteger top = sq_gettop(v);
163 sq_pushregistrytable(v);
164 sq_pushstring(v,_SC("std_file"),-1);
165 if(SQ_SUCCEEDED(sq_get(v,-2))) {
166 sq_remove(v,-2); //removes the registry
167 sq_pushroottable(v); // push the this
168 sq_pushuserpointer(v,file); //file
170 sq_pushinteger(v,1); //true
173 sq_pushnull(v); //false
175 if(SQ_SUCCEEDED( sq_call(v,3,SQTrue,SQFalse) )) {
184 SQRESULT sqstd_getfile(HSQUIRRELVM v, SQInteger idx, SQFILE *file)
186 SQFile *fileobj = NULL;
187 if(SQ_SUCCEEDED(sq_getinstanceup(v,idx,(SQUserPointer*)&fileobj,(SQUserPointer)SQSTD_FILE_TYPE_TAG))) {
188 *file = fileobj->GetHandle();
191 return sq_throwerror(v,_SC("not a file"));
196 static SQInteger _io_file_lexfeed_ASCII(SQUserPointer file)
200 if( ( ret=sqstd_fread(&c,sizeof(c),1,(FILE *)file )>0) )
205 static SQInteger _io_file_lexfeed_UTF8(SQUserPointer file)
208 if(sqstd_fread(&inchar,sizeof(inchar),1,(FILE *)file) != 1) \
211 static const SQInteger utf8_lengths[16] =
213 1,1,1,1,1,1,1,1, /* 0000 to 0111 : 1 byte (plain ASCII) */
214 0,0,0,0, /* 1000 to 1011 : not valid */
215 2,2, /* 1100, 1101 : 2 bytes */
216 3, /* 1110 : 3 bytes */
217 4 /* 1111 :4 bytes */
219 static unsigned char byte_masks[5] = {0,0,0x1f,0x0f,0x07};
220 unsigned char inchar;
227 SQInteger codelen = utf8_lengths[c>>4];
230 //"invalid UTF-8 stream";
231 tmp = c&byte_masks[codelen];
232 for(SQInteger n = 0; n < codelen-1; n++) {
235 tmp |= inchar & 0x3F;
242 static SQInteger _io_file_lexfeed_UCS2_LE(SQUserPointer file)
246 if( ( ret=sqstd_fread(&c,sizeof(c),1,(FILE *)file )>0) )
251 static SQInteger _io_file_lexfeed_UCS2_BE(SQUserPointer file)
255 if( ( ret=sqstd_fread(&c,sizeof(c),1,(FILE *)file )>0) ) {
256 c = ((c>>8)&0x00FF)| ((c<<8)&0xFF00);
262 SQInteger file_read(SQUserPointer file,SQUserPointer buf,SQInteger size)
265 if( ( ret = sqstd_fread(buf,1,size,(SQFILE)file ))!=0 )return ret;
269 SQInteger file_write(SQUserPointer file,SQUserPointer p,SQInteger size)
271 return sqstd_fwrite(p,1,size,(SQFILE)file);
274 SQRESULT sqstd_loadfile(HSQUIRRELVM v,const SQChar *filename,SQBool printerror)
276 SQFILE file = sqstd_fopen(filename,_SC("rb"));
280 SQLEXREADFUNC func = _io_file_lexfeed_ASCII;
282 ret = sqstd_fread(&us,1,2,file);
284 //probably an empty file
287 if(us == SQ_BYTECODE_STREAM_TAG) { //BYTECODE
288 sqstd_fseek(file,0,SQ_SEEK_SET);
289 if(SQ_SUCCEEDED(sq_readclosure(v,file_read,file))) {
297 //gotta swap the next 2 lines on BIG endian machines
298 case 0xFFFE: func = _io_file_lexfeed_UCS2_BE; break;//UTF-16 little endian;
299 case 0xFEFF: func = _io_file_lexfeed_UCS2_LE; break;//UTF-16 big endian;
301 if(sqstd_fread(&uc,1,sizeof(uc),file) == 0) {
303 return sq_throwerror(v,_SC("io error"));
307 return sq_throwerror(v,_SC("Unrecognozed ecoding"));
309 func = _io_file_lexfeed_UTF8;
311 default: sqstd_fseek(file,0,SQ_SEEK_SET); break; // ascii
314 if(SQ_SUCCEEDED(sq_compile(v,func,file,filename,printerror))){
322 return sq_throwerror(v,_SC("cannot open the file"));
325 SQRESULT sqstd_dofile(HSQUIRRELVM v,const SQChar *filename,SQBool retval,SQBool printerror)
327 if(SQ_SUCCEEDED(sqstd_loadfile(v,filename,printerror))) {
329 if(SQ_SUCCEEDED(sq_call(v,1,retval,SQTrue))) {
330 sq_remove(v,retval?-2:-1); //removes the closure
333 sq_pop(v,1); //removes the closure
338 SQRESULT sqstd_writeclosuretofile(HSQUIRRELVM v,const SQChar *filename)
340 SQFILE file = sqstd_fopen(filename,_SC("wb+"));
341 if(!file) return sq_throwerror(v,_SC("cannot open the file"));
342 if(SQ_SUCCEEDED(sq_writeclosure(v,file_write,file))) {
347 return SQ_ERROR; //forward the error
350 SQInteger _g_io_loadfile(HSQUIRRELVM v)
352 const SQChar *filename;
353 SQBool printerror = SQFalse;
354 sq_getstring(v,2,&filename);
355 if(sq_gettop(v) >= 3) {
356 sq_getbool(v,3,&printerror);
358 if(SQ_SUCCEEDED(sqstd_loadfile(v,filename,printerror)))
360 return SQ_ERROR; //propagates the error
363 SQInteger _g_io_writeclosuretofile(HSQUIRRELVM v)
365 const SQChar *filename;
366 sq_getstring(v,2,&filename);
367 if(SQ_SUCCEEDED(sqstd_writeclosuretofile(v,filename)))
369 return SQ_ERROR; //propagates the error
372 SQInteger _g_io_dofile(HSQUIRRELVM v)
374 const SQChar *filename;
375 SQBool printerror = SQFalse;
376 sq_getstring(v,2,&filename);
377 if(sq_gettop(v) >= 3) {
378 sq_getbool(v,3,&printerror);
380 sq_push(v,1); //repush the this
381 if(SQ_SUCCEEDED(sqstd_dofile(v,filename,SQTrue,printerror)))
383 return SQ_ERROR; //propagates the error
386 #define _DECL_GLOBALIO_FUNC(name,nparams,typecheck) {_SC(#name),_g_io_##name,nparams,typecheck}
387 static SQRegFunction iolib_funcs[]={
388 _DECL_GLOBALIO_FUNC(loadfile,-2,_SC(".sb")),
389 _DECL_GLOBALIO_FUNC(dofile,-2,_SC(".sb")),
390 _DECL_GLOBALIO_FUNC(writeclosuretofile,3,_SC(".sc")),
394 SQRESULT sqstd_register_iolib(HSQUIRRELVM v)
396 SQInteger top = sq_gettop(v);
398 declare_stream(v,_SC("file"),(SQUserPointer)SQSTD_FILE_TYPE_TAG,_SC("std_file"),_file_methods,iolib_funcs);
399 sq_pushstring(v,_SC("stdout"),-1);
400 sqstd_createfile(v,stdout,SQFalse);
402 sq_pushstring(v,_SC("stdin"),-1);
403 sqstd_createfile(v,stdin,SQFalse);
405 sq_pushstring(v,_SC("stderr"),-1);
406 sqstd_createfile(v,stderr,SQFalse);