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