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| 1 /* | |
| 2 ** The "printf" code that follows dates from the 1980's. It is in | |
| 3 ** the public domain. The original comments are included here for | |
| 4 ** completeness. They are very out-of-date but might be useful as | |
| 5 ** an historical reference. Most of the "enhancements" have been backed | |
| 6 ** out so that the functionality is now the same as standard printf(). | |
| 7 ** | |
| 8 ************************************************************************** | |
| 9 ** | |
| 10 ** This file contains code for a set of "printf"-like routines. These | |
| 11 ** routines format strings much like the printf() from the standard C | |
| 12 ** library, though the implementation here has enhancements to support | |
| 13 ** SQLlite. | |
| 14 */ | |
| 15 #include "sqliteInt.h" | |
| 16 | |
| 17 /* | |
| 18 ** If the strchrnul() library function is available, then set | |
| 19 ** HAVE_STRCHRNUL. If that routine is not available, this module | |
| 20 ** will supply its own. The built-in version is slower than | |
| 21 ** the glibc version so the glibc version is definitely preferred. | |
| 22 */ | |
| 23 #if !defined(HAVE_STRCHRNUL) | |
| 24 # define HAVE_STRCHRNUL 0 | |
| 25 #endif | |
| 26 | |
| 27 | |
| 28 /* | |
| 29 ** Conversion types fall into various categories as defined by the | |
| 30 ** following enumeration. | |
| 31 */ | |
| 32 #define etRADIX 1 /* Integer types. %d, %x, %o, and so forth */ | |
| 33 #define etFLOAT 2 /* Floating point. %f */ | |
| 34 #define etEXP 3 /* Exponentional notation. %e and %E */ | |
| 35 #define etGENERIC 4 /* Floating or exponential, depending on exponent. %g */ | |
| 36 #define etSIZE 5 /* Return number of characters processed so far. %n */ | |
| 37 #define etSTRING 6 /* Strings. %s */ | |
| 38 #define etDYNSTRING 7 /* Dynamically allocated strings. %z */ | |
| 39 #define etPERCENT 8 /* Percent symbol. %% */ | |
| 40 #define etCHARX 9 /* Characters. %c */ | |
| 41 /* The rest are extensions, not normally found in printf() */ | |
| 42 #define etSQLESCAPE 10 /* Strings with '\'' doubled. %q */ | |
| 43 #define etSQLESCAPE2 11 /* Strings with '\'' doubled and enclosed in '', | |
| 44 NULL pointers replaced by SQL NULL. %Q */ | |
| 45 #define etTOKEN 12 /* a pointer to a Token structure */ | |
| 46 #define etSRCLIST 13 /* a pointer to a SrcList */ | |
| 47 #define etPOINTER 14 /* The %p conversion */ | |
| 48 #define etSQLESCAPE3 15 /* %w -> Strings with '\"' doubled */ | |
| 49 #define etORDINAL 16 /* %r -> 1st, 2nd, 3rd, 4th, etc. English only */ | |
| 50 | |
| 51 #define etINVALID 0 /* Any unrecognized conversion type */ | |
| 52 | |
| 53 | |
| 54 /* | |
| 55 ** An "etByte" is an 8-bit unsigned value. | |
| 56 */ | |
| 57 typedef unsigned char etByte; | |
| 58 | |
| 59 /* | |
| 60 ** Each builtin conversion character (ex: the 'd' in "%d") is described | |
| 61 ** by an instance of the following structure | |
| 62 */ | |
| 63 typedef struct et_info { /* Information about each format field */ | |
| 64 char fmttype; /* The format field code letter */ | |
| 65 etByte base; /* The base for radix conversion */ | |
| 66 etByte flags; /* One or more of FLAG_ constants below */ | |
| 67 etByte type; /* Conversion paradigm */ | |
| 68 etByte charset; /* Offset into aDigits[] of the digits string */ | |
| 69 etByte prefix; /* Offset into aPrefix[] of the prefix string */ | |
| 70 } et_info; | |
| 71 | |
| 72 /* | |
| 73 ** Allowed values for et_info.flags | |
| 74 */ | |
| 75 #define FLAG_SIGNED 1 /* True if the value to convert is signed */ | |
| 76 #define FLAG_INTERN 2 /* True if for internal use only */ | |
| 77 #define FLAG_STRING 4 /* Allow infinity precision */ | |
| 78 | |
| 79 | |
| 80 /* | |
| 81 ** The following table is searched linearly, so it is good to put the | |
| 82 ** most frequently used conversion types first. | |
| 83 */ | |
| 84 static const char aDigits[] = "0123456789ABCDEF0123456789abcdef"; | |
| 85 static const char aPrefix[] = "-x0\000X0"; | |
| 86 static const et_info fmtinfo[] = { | |
| 87 { 'd', 10, 1, etRADIX, 0, 0 }, | |
| 88 { 's', 0, 4, etSTRING, 0, 0 }, | |
| 89 { 'g', 0, 1, etGENERIC, 30, 0 }, | |
| 90 { 'z', 0, 4, etDYNSTRING, 0, 0 }, | |
| 91 { 'q', 0, 4, etSQLESCAPE, 0, 0 }, | |
| 92 { 'Q', 0, 4, etSQLESCAPE2, 0, 0 }, | |
| 93 { 'w', 0, 4, etSQLESCAPE3, 0, 0 }, | |
| 94 { 'c', 0, 0, etCHARX, 0, 0 }, | |
| 95 { 'o', 8, 0, etRADIX, 0, 2 }, | |
| 96 { 'u', 10, 0, etRADIX, 0, 0 }, | |
| 97 { 'x', 16, 0, etRADIX, 16, 1 }, | |
| 98 { 'X', 16, 0, etRADIX, 0, 4 }, | |
| 99 #ifndef SQLITE_OMIT_FLOATING_POINT | |
| 100 { 'f', 0, 1, etFLOAT, 0, 0 }, | |
| 101 { 'e', 0, 1, etEXP, 30, 0 }, | |
| 102 { 'E', 0, 1, etEXP, 14, 0 }, | |
| 103 { 'G', 0, 1, etGENERIC, 14, 0 }, | |
| 104 #endif | |
| 105 { 'i', 10, 1, etRADIX, 0, 0 }, | |
| 106 { 'n', 0, 0, etSIZE, 0, 0 }, | |
| 107 { '%', 0, 0, etPERCENT, 0, 0 }, | |
| 108 { 'p', 16, 0, etPOINTER, 0, 1 }, | |
| 109 | |
| 110 /* All the rest have the FLAG_INTERN bit set and are thus for internal | |
| 111 ** use only */ | |
| 112 { 'T', 0, 2, etTOKEN, 0, 0 }, | |
| 113 { 'S', 0, 2, etSRCLIST, 0, 0 }, | |
| 114 { 'r', 10, 3, etORDINAL, 0, 0 }, | |
| 115 }; | |
| 116 | |
| 117 /* | |
| 118 ** If SQLITE_OMIT_FLOATING_POINT is defined, then none of the floating point | |
| 119 ** conversions will work. | |
| 120 */ | |
| 121 #ifndef SQLITE_OMIT_FLOATING_POINT | |
| 122 /* | |
| 123 ** "*val" is a double such that 0.1 <= *val < 10.0 | |
| 124 ** Return the ascii code for the leading digit of *val, then | |
| 125 ** multiply "*val" by 10.0 to renormalize. | |
| 126 ** | |
| 127 ** Example: | |
| 128 ** input: *val = 3.14159 | |
| 129 ** output: *val = 1.4159 function return = '3' | |
| 130 ** | |
| 131 ** The counter *cnt is incremented each time. After counter exceeds | |
| 132 ** 16 (the number of significant digits in a 64-bit float) '0' is | |
| 133 ** always returned. | |
| 134 */ | |
| 135 static char et_getdigit(LONGDOUBLE_TYPE *val, int *cnt){ | |
| 136 int digit; | |
| 137 LONGDOUBLE_TYPE d; | |
| 138 if( (*cnt)<=0 ) return '0'; | |
| 139 (*cnt)--; | |
| 140 digit = (int)*val; | |
| 141 d = digit; | |
| 142 digit += '0'; | |
| 143 *val = (*val - d)*10.0; | |
| 144 return (char)digit; | |
| 145 } | |
| 146 #endif /* SQLITE_OMIT_FLOATING_POINT */ | |
| 147 | |
| 148 /* | |
| 149 ** Set the StrAccum object to an error mode. | |
| 150 */ | |
| 151 static void setStrAccumError(StrAccum *p, u8 eError){ | |
| 152 p->accError = eError; | |
| 153 p->nAlloc = 0; | |
| 154 } | |
| 155 | |
| 156 /* | |
| 157 ** Extra argument values from a PrintfArguments object | |
| 158 */ | |
| 159 static sqlite3_int64 getIntArg(PrintfArguments *p){ | |
| 160 if( p->nArg<=p->nUsed ) return 0; | |
| 161 return sqlite3_value_int64(p->apArg[p->nUsed++]); | |
| 162 } | |
| 163 static double getDoubleArg(PrintfArguments *p){ | |
| 164 if( p->nArg<=p->nUsed ) return 0.0; | |
| 165 return sqlite3_value_double(p->apArg[p->nUsed++]); | |
| 166 } | |
| 167 static char *getTextArg(PrintfArguments *p){ | |
| 168 if( p->nArg<=p->nUsed ) return 0; | |
| 169 return (char*)sqlite3_value_text(p->apArg[p->nUsed++]); | |
| 170 } | |
| 171 | |
| 172 | |
| 173 /* | |
| 174 ** On machines with a small stack size, you can redefine the | |
| 175 ** SQLITE_PRINT_BUF_SIZE to be something smaller, if desired. | |
| 176 */ | |
| 177 #ifndef SQLITE_PRINT_BUF_SIZE | |
| 178 # define SQLITE_PRINT_BUF_SIZE 70 | |
| 179 #endif | |
| 180 #define etBUFSIZE SQLITE_PRINT_BUF_SIZE /* Size of the output buffer */ | |
| 181 | |
| 182 /* | |
| 183 ** Render a string given by "fmt" into the StrAccum object. | |
| 184 */ | |
| 185 void sqlite3VXPrintf( | |
| 186 StrAccum *pAccum, /* Accumulate results here */ | |
| 187 u32 bFlags, /* SQLITE_PRINTF_* flags */ | |
| 188 const char *fmt, /* Format string */ | |
| 189 va_list ap /* arguments */ | |
| 190 ){ | |
| 191 int c; /* Next character in the format string */ | |
| 192 char *bufpt; /* Pointer to the conversion buffer */ | |
| 193 int precision; /* Precision of the current field */ | |
| 194 int length; /* Length of the field */ | |
| 195 int idx; /* A general purpose loop counter */ | |
| 196 int width; /* Width of the current field */ | |
| 197 etByte flag_leftjustify; /* True if "-" flag is present */ | |
| 198 etByte flag_plussign; /* True if "+" flag is present */ | |
| 199 etByte flag_blanksign; /* True if " " flag is present */ | |
| 200 etByte flag_alternateform; /* True if "#" flag is present */ | |
| 201 etByte flag_altform2; /* True if "!" flag is present */ | |
| 202 etByte flag_zeropad; /* True if field width constant starts with zero */ | |
| 203 etByte flag_long; /* True if "l" flag is present */ | |
| 204 etByte flag_longlong; /* True if the "ll" flag is present */ | |
| 205 etByte done; /* Loop termination flag */ | |
| 206 etByte xtype = 0; /* Conversion paradigm */ | |
| 207 u8 bArgList; /* True for SQLITE_PRINTF_SQLFUNC */ | |
| 208 u8 useIntern; /* Ok to use internal conversions (ex: %T) */ | |
| 209 char prefix; /* Prefix character. "+" or "-" or " " or '\0'. */ | |
| 210 sqlite_uint64 longvalue; /* Value for integer types */ | |
| 211 LONGDOUBLE_TYPE realvalue; /* Value for real types */ | |
| 212 const et_info *infop; /* Pointer to the appropriate info structure */ | |
| 213 char *zOut; /* Rendering buffer */ | |
| 214 int nOut; /* Size of the rendering buffer */ | |
| 215 char *zExtra = 0; /* Malloced memory used by some conversion */ | |
| 216 #ifndef SQLITE_OMIT_FLOATING_POINT | |
| 217 int exp, e2; /* exponent of real numbers */ | |
| 218 int nsd; /* Number of significant digits returned */ | |
| 219 double rounder; /* Used for rounding floating point values */ | |
| 220 etByte flag_dp; /* True if decimal point should be shown */ | |
| 221 etByte flag_rtz; /* True if trailing zeros should be removed */ | |
| 222 #endif | |
| 223 PrintfArguments *pArgList = 0; /* Arguments for SQLITE_PRINTF_SQLFUNC */ | |
| 224 char buf[etBUFSIZE]; /* Conversion buffer */ | |
| 225 | |
| 226 bufpt = 0; | |
| 227 if( bFlags ){ | |
| 228 if( (bArgList = (bFlags & SQLITE_PRINTF_SQLFUNC))!=0 ){ | |
| 229 pArgList = va_arg(ap, PrintfArguments*); | |
| 230 } | |
| 231 useIntern = bFlags & SQLITE_PRINTF_INTERNAL; | |
| 232 }else{ | |
| 233 bArgList = useIntern = 0; | |
| 234 } | |
| 235 for(; (c=(*fmt))!=0; ++fmt){ | |
| 236 if( c!='%' ){ | |
| 237 bufpt = (char *)fmt; | |
| 238 #if HAVE_STRCHRNUL | |
| 239 fmt = strchrnul(fmt, '%'); | |
| 240 #else | |
| 241 do{ fmt++; }while( *fmt && *fmt != '%' ); | |
| 242 #endif | |
| 243 sqlite3StrAccumAppend(pAccum, bufpt, (int)(fmt - bufpt)); | |
| 244 if( *fmt==0 ) break; | |
| 245 } | |
| 246 if( (c=(*++fmt))==0 ){ | |
| 247 sqlite3StrAccumAppend(pAccum, "%", 1); | |
| 248 break; | |
| 249 } | |
| 250 /* Find out what flags are present */ | |
| 251 flag_leftjustify = flag_plussign = flag_blanksign = | |
| 252 flag_alternateform = flag_altform2 = flag_zeropad = 0; | |
| 253 done = 0; | |
| 254 do{ | |
| 255 switch( c ){ | |
| 256 case '-': flag_leftjustify = 1; break; | |
| 257 case '+': flag_plussign = 1; break; | |
| 258 case ' ': flag_blanksign = 1; break; | |
| 259 case '#': flag_alternateform = 1; break; | |
| 260 case '!': flag_altform2 = 1; break; | |
| 261 case '0': flag_zeropad = 1; break; | |
| 262 default: done = 1; break; | |
| 263 } | |
| 264 }while( !done && (c=(*++fmt))!=0 ); | |
| 265 /* Get the field width */ | |
| 266 width = 0; | |
| 267 if( c=='*' ){ | |
| 268 if( bArgList ){ | |
| 269 width = (int)getIntArg(pArgList); | |
| 270 }else{ | |
| 271 width = va_arg(ap,int); | |
| 272 } | |
| 273 if( width<0 ){ | |
| 274 flag_leftjustify = 1; | |
| 275 width = -width; | |
| 276 } | |
| 277 c = *++fmt; | |
| 278 }else{ | |
| 279 while( c>='0' && c<='9' ){ | |
| 280 width = width*10 + c - '0'; | |
| 281 c = *++fmt; | |
| 282 } | |
| 283 } | |
| 284 /* Get the precision */ | |
| 285 if( c=='.' ){ | |
| 286 precision = 0; | |
| 287 c = *++fmt; | |
| 288 if( c=='*' ){ | |
| 289 if( bArgList ){ | |
| 290 precision = (int)getIntArg(pArgList); | |
| 291 }else{ | |
| 292 precision = va_arg(ap,int); | |
| 293 } | |
| 294 if( precision<0 ) precision = -precision; | |
| 295 c = *++fmt; | |
| 296 }else{ | |
| 297 while( c>='0' && c<='9' ){ | |
| 298 precision = precision*10 + c - '0'; | |
| 299 c = *++fmt; | |
| 300 } | |
| 301 } | |
| 302 }else{ | |
| 303 precision = -1; | |
| 304 } | |
| 305 /* Get the conversion type modifier */ | |
| 306 if( c=='l' ){ | |
| 307 flag_long = 1; | |
| 308 c = *++fmt; | |
| 309 if( c=='l' ){ | |
| 310 flag_longlong = 1; | |
| 311 c = *++fmt; | |
| 312 }else{ | |
| 313 flag_longlong = 0; | |
| 314 } | |
| 315 }else{ | |
| 316 flag_long = flag_longlong = 0; | |
| 317 } | |
| 318 /* Fetch the info entry for the field */ | |
| 319 infop = &fmtinfo[0]; | |
| 320 xtype = etINVALID; | |
| 321 for(idx=0; idx<ArraySize(fmtinfo); idx++){ | |
| 322 if( c==fmtinfo[idx].fmttype ){ | |
| 323 infop = &fmtinfo[idx]; | |
| 324 if( useIntern || (infop->flags & FLAG_INTERN)==0 ){ | |
| 325 xtype = infop->type; | |
| 326 }else{ | |
| 327 return; | |
| 328 } | |
| 329 break; | |
| 330 } | |
| 331 } | |
| 332 | |
| 333 /* | |
| 334 ** At this point, variables are initialized as follows: | |
| 335 ** | |
| 336 ** flag_alternateform TRUE if a '#' is present. | |
| 337 ** flag_altform2 TRUE if a '!' is present. | |
| 338 ** flag_plussign TRUE if a '+' is present. | |
| 339 ** flag_leftjustify TRUE if a '-' is present or if the | |
| 340 ** field width was negative. | |
| 341 ** flag_zeropad TRUE if the width began with 0. | |
| 342 ** flag_long TRUE if the letter 'l' (ell) prefixed | |
| 343 ** the conversion character. | |
| 344 ** flag_longlong TRUE if the letter 'll' (ell ell) prefixed | |
| 345 ** the conversion character. | |
| 346 ** flag_blanksign TRUE if a ' ' is present. | |
| 347 ** width The specified field width. This is | |
| 348 ** always non-negative. Zero is the default. | |
| 349 ** precision The specified precision. The default | |
| 350 ** is -1. | |
| 351 ** xtype The class of the conversion. | |
| 352 ** infop Pointer to the appropriate info struct. | |
| 353 */ | |
| 354 switch( xtype ){ | |
| 355 case etPOINTER: | |
| 356 flag_longlong = sizeof(char*)==sizeof(i64); | |
| 357 flag_long = sizeof(char*)==sizeof(long int); | |
| 358 /* Fall through into the next case */ | |
| 359 case etORDINAL: | |
| 360 case etRADIX: | |
| 361 if( infop->flags & FLAG_SIGNED ){ | |
| 362 i64 v; | |
| 363 if( bArgList ){ | |
| 364 v = getIntArg(pArgList); | |
| 365 }else if( flag_longlong ){ | |
| 366 v = va_arg(ap,i64); | |
| 367 }else if( flag_long ){ | |
| 368 v = va_arg(ap,long int); | |
| 369 }else{ | |
| 370 v = va_arg(ap,int); | |
| 371 } | |
| 372 if( v<0 ){ | |
| 373 if( v==SMALLEST_INT64 ){ | |
| 374 longvalue = ((u64)1)<<63; | |
| 375 }else{ | |
| 376 longvalue = -v; | |
| 377 } | |
| 378 prefix = '-'; | |
| 379 }else{ | |
| 380 longvalue = v; | |
| 381 if( flag_plussign ) prefix = '+'; | |
| 382 else if( flag_blanksign ) prefix = ' '; | |
| 383 else prefix = 0; | |
| 384 } | |
| 385 }else{ | |
| 386 if( bArgList ){ | |
| 387 longvalue = (u64)getIntArg(pArgList); | |
| 388 }else if( flag_longlong ){ | |
| 389 longvalue = va_arg(ap,u64); | |
| 390 }else if( flag_long ){ | |
| 391 longvalue = va_arg(ap,unsigned long int); | |
| 392 }else{ | |
| 393 longvalue = va_arg(ap,unsigned int); | |
| 394 } | |
| 395 prefix = 0; | |
| 396 } | |
| 397 if( longvalue==0 ) flag_alternateform = 0; | |
| 398 if( flag_zeropad && precision<width-(prefix!=0) ){ | |
| 399 precision = width-(prefix!=0); | |
| 400 } | |
| 401 if( precision<etBUFSIZE-10 ){ | |
| 402 nOut = etBUFSIZE; | |
| 403 zOut = buf; | |
| 404 }else{ | |
| 405 nOut = precision + 10; | |
| 406 zOut = zExtra = sqlite3Malloc( nOut ); | |
| 407 if( zOut==0 ){ | |
| 408 setStrAccumError(pAccum, STRACCUM_NOMEM); | |
| 409 return; | |
| 410 } | |
| 411 } | |
| 412 bufpt = &zOut[nOut-1]; | |
| 413 if( xtype==etORDINAL ){ | |
| 414 static const char zOrd[] = "thstndrd"; | |
| 415 int x = (int)(longvalue % 10); | |
| 416 if( x>=4 || (longvalue/10)%10==1 ){ | |
| 417 x = 0; | |
| 418 } | |
| 419 *(--bufpt) = zOrd[x*2+1]; | |
| 420 *(--bufpt) = zOrd[x*2]; | |
| 421 } | |
| 422 { | |
| 423 const char *cset = &aDigits[infop->charset]; | |
| 424 u8 base = infop->base; | |
| 425 do{ /* Convert to ascii */ | |
| 426 *(--bufpt) = cset[longvalue%base]; | |
| 427 longvalue = longvalue/base; | |
| 428 }while( longvalue>0 ); | |
| 429 } | |
| 430 length = (int)(&zOut[nOut-1]-bufpt); | |
| 431 for(idx=precision-length; idx>0; idx--){ | |
| 432 *(--bufpt) = '0'; /* Zero pad */ | |
| 433 } | |
| 434 if( prefix ) *(--bufpt) = prefix; /* Add sign */ | |
| 435 if( flag_alternateform && infop->prefix ){ /* Add "0" or "0x" */ | |
| 436 const char *pre; | |
| 437 char x; | |
| 438 pre = &aPrefix[infop->prefix]; | |
| 439 for(; (x=(*pre))!=0; pre++) *(--bufpt) = x; | |
| 440 } | |
| 441 length = (int)(&zOut[nOut-1]-bufpt); | |
| 442 break; | |
| 443 case etFLOAT: | |
| 444 case etEXP: | |
| 445 case etGENERIC: | |
| 446 if( bArgList ){ | |
| 447 realvalue = getDoubleArg(pArgList); | |
| 448 }else{ | |
| 449 realvalue = va_arg(ap,double); | |
| 450 } | |
| 451 #ifdef SQLITE_OMIT_FLOATING_POINT | |
| 452 length = 0; | |
| 453 #else | |
| 454 if( precision<0 ) precision = 6; /* Set default precision */ | |
| 455 if( realvalue<0.0 ){ | |
| 456 realvalue = -realvalue; | |
| 457 prefix = '-'; | |
| 458 }else{ | |
| 459 if( flag_plussign ) prefix = '+'; | |
| 460 else if( flag_blanksign ) prefix = ' '; | |
| 461 else prefix = 0; | |
| 462 } | |
| 463 if( xtype==etGENERIC && precision>0 ) precision--; | |
| 464 for(idx=precision, rounder=0.5; idx>0; idx--, rounder*=0.1){} | |
| 465 if( xtype==etFLOAT ) realvalue += rounder; | |
| 466 /* Normalize realvalue to within 10.0 > realvalue >= 1.0 */ | |
| 467 exp = 0; | |
| 468 if( sqlite3IsNaN((double)realvalue) ){ | |
| 469 bufpt = "NaN"; | |
| 470 length = 3; | |
| 471 break; | |
| 472 } | |
| 473 if( realvalue>0.0 ){ | |
| 474 LONGDOUBLE_TYPE scale = 1.0; | |
| 475 while( realvalue>=1e100*scale && exp<=350 ){ scale *= 1e100;exp+=100;} | |
| 476 while( realvalue>=1e64*scale && exp<=350 ){ scale *= 1e64; exp+=64; } | |
| 477 while( realvalue>=1e8*scale && exp<=350 ){ scale *= 1e8; exp+=8; } | |
| 478 while( realvalue>=10.0*scale && exp<=350 ){ scale *= 10.0; exp++; } | |
| 479 realvalue /= scale; | |
| 480 while( realvalue<1e-8 ){ realvalue *= 1e8; exp-=8; } | |
| 481 while( realvalue<1.0 ){ realvalue *= 10.0; exp--; } | |
| 482 if( exp>350 ){ | |
| 483 if( prefix=='-' ){ | |
| 484 bufpt = "-Inf"; | |
| 485 }else if( prefix=='+' ){ | |
| 486 bufpt = "+Inf"; | |
| 487 }else{ | |
| 488 bufpt = "Inf"; | |
| 489 } | |
| 490 length = sqlite3Strlen30(bufpt); | |
| 491 break; | |
| 492 } | |
| 493 } | |
| 494 bufpt = buf; | |
| 495 /* | |
| 496 ** If the field type is etGENERIC, then convert to either etEXP | |
| 497 ** or etFLOAT, as appropriate. | |
| 498 */ | |
| 499 if( xtype!=etFLOAT ){ | |
| 500 realvalue += rounder; | |
| 501 if( realvalue>=10.0 ){ realvalue *= 0.1; exp++; } | |
| 502 } | |
| 503 if( xtype==etGENERIC ){ | |
| 504 flag_rtz = !flag_alternateform; | |
| 505 if( exp<-4 || exp>precision ){ | |
| 506 xtype = etEXP; | |
| 507 }else{ | |
| 508 precision = precision - exp; | |
| 509 xtype = etFLOAT; | |
| 510 } | |
| 511 }else{ | |
| 512 flag_rtz = flag_altform2; | |
| 513 } | |
| 514 if( xtype==etEXP ){ | |
| 515 e2 = 0; | |
| 516 }else{ | |
| 517 e2 = exp; | |
| 518 } | |
| 519 if( MAX(e2,0)+precision+width > etBUFSIZE - 15 ){ | |
| 520 bufpt = zExtra = sqlite3Malloc( MAX(e2,0)+precision+width+15 ); | |
| 521 if( bufpt==0 ){ | |
| 522 setStrAccumError(pAccum, STRACCUM_NOMEM); | |
| 523 return; | |
| 524 } | |
| 525 } | |
| 526 zOut = bufpt; | |
| 527 nsd = 16 + flag_altform2*10; | |
| 528 flag_dp = (precision>0 ?1:0) | flag_alternateform | flag_altform2; | |
| 529 /* The sign in front of the number */ | |
| 530 if( prefix ){ | |
| 531 *(bufpt++) = prefix; | |
| 532 } | |
| 533 /* Digits prior to the decimal point */ | |
| 534 if( e2<0 ){ | |
| 535 *(bufpt++) = '0'; | |
| 536 }else{ | |
| 537 for(; e2>=0; e2--){ | |
| 538 *(bufpt++) = et_getdigit(&realvalue,&nsd); | |
| 539 } | |
| 540 } | |
| 541 /* The decimal point */ | |
| 542 if( flag_dp ){ | |
| 543 *(bufpt++) = '.'; | |
| 544 } | |
| 545 /* "0" digits after the decimal point but before the first | |
| 546 ** significant digit of the number */ | |
| 547 for(e2++; e2<0; precision--, e2++){ | |
| 548 assert( precision>0 ); | |
| 549 *(bufpt++) = '0'; | |
| 550 } | |
| 551 /* Significant digits after the decimal point */ | |
| 552 while( (precision--)>0 ){ | |
| 553 *(bufpt++) = et_getdigit(&realvalue,&nsd); | |
| 554 } | |
| 555 /* Remove trailing zeros and the "." if no digits follow the "." */ | |
| 556 if( flag_rtz && flag_dp ){ | |
| 557 while( bufpt[-1]=='0' ) *(--bufpt) = 0; | |
| 558 assert( bufpt>zOut ); | |
| 559 if( bufpt[-1]=='.' ){ | |
| 560 if( flag_altform2 ){ | |
| 561 *(bufpt++) = '0'; | |
| 562 }else{ | |
| 563 *(--bufpt) = 0; | |
| 564 } | |
| 565 } | |
| 566 } | |
| 567 /* Add the "eNNN" suffix */ | |
| 568 if( xtype==etEXP ){ | |
| 569 *(bufpt++) = aDigits[infop->charset]; | |
| 570 if( exp<0 ){ | |
| 571 *(bufpt++) = '-'; exp = -exp; | |
| 572 }else{ | |
| 573 *(bufpt++) = '+'; | |
| 574 } | |
| 575 if( exp>=100 ){ | |
| 576 *(bufpt++) = (char)((exp/100)+'0'); /* 100's digit */ | |
| 577 exp %= 100; | |
| 578 } | |
| 579 *(bufpt++) = (char)(exp/10+'0'); /* 10's digit */ | |
| 580 *(bufpt++) = (char)(exp%10+'0'); /* 1's digit */ | |
| 581 } | |
| 582 *bufpt = 0; | |
| 583 | |
| 584 /* The converted number is in buf[] and zero terminated. Output it. | |
| 585 ** Note that the number is in the usual order, not reversed as with | |
| 586 ** integer conversions. */ | |
| 587 length = (int)(bufpt-zOut); | |
| 588 bufpt = zOut; | |
| 589 | |
| 590 /* Special case: Add leading zeros if the flag_zeropad flag is | |
| 591 ** set and we are not left justified */ | |
| 592 if( flag_zeropad && !flag_leftjustify && length < width){ | |
| 593 int i; | |
| 594 int nPad = width - length; | |
| 595 for(i=width; i>=nPad; i--){ | |
| 596 bufpt[i] = bufpt[i-nPad]; | |
| 597 } | |
| 598 i = prefix!=0; | |
| 599 while( nPad-- ) bufpt[i++] = '0'; | |
| 600 length = width; | |
| 601 } | |
| 602 #endif /* !defined(SQLITE_OMIT_FLOATING_POINT) */ | |
| 603 break; | |
| 604 case etSIZE: | |
| 605 if( !bArgList ){ | |
| 606 *(va_arg(ap,int*)) = pAccum->nChar; | |
| 607 } | |
| 608 length = width = 0; | |
| 609 break; | |
| 610 case etPERCENT: | |
| 611 buf[0] = '%'; | |
| 612 bufpt = buf; | |
| 613 length = 1; | |
| 614 break; | |
| 615 case etCHARX: | |
| 616 if( bArgList ){ | |
| 617 bufpt = getTextArg(pArgList); | |
| 618 c = bufpt ? bufpt[0] : 0; | |
| 619 }else{ | |
| 620 c = va_arg(ap,int); | |
| 621 } | |
| 622 if( precision>1 ){ | |
| 623 width -= precision-1; | |
| 624 if( width>1 && !flag_leftjustify ){ | |
| 625 sqlite3AppendChar(pAccum, width-1, ' '); | |
| 626 width = 0; | |
| 627 } | |
| 628 sqlite3AppendChar(pAccum, precision-1, c); | |
| 629 } | |
| 630 length = 1; | |
| 631 buf[0] = c; | |
| 632 bufpt = buf; | |
| 633 break; | |
| 634 case etSTRING: | |
| 635 case etDYNSTRING: | |
| 636 if( bArgList ){ | |
| 637 bufpt = getTextArg(pArgList); | |
| 638 }else{ | |
| 639 bufpt = va_arg(ap,char*); | |
| 640 } | |
| 641 if( bufpt==0 ){ | |
| 642 bufpt = ""; | |
| 643 }else if( xtype==etDYNSTRING && !bArgList ){ | |
| 644 zExtra = bufpt; | |
| 645 } | |
| 646 if( precision>=0 ){ | |
| 647 for(length=0; length<precision && bufpt[length]; length++){} | |
| 648 }else{ | |
| 649 length = sqlite3Strlen30(bufpt); | |
| 650 } | |
| 651 break; | |
| 652 case etSQLESCAPE: | |
| 653 case etSQLESCAPE2: | |
| 654 case etSQLESCAPE3: { | |
| 655 int i, j, k, n, isnull; | |
| 656 int needQuote; | |
| 657 char ch; | |
| 658 char q = ((xtype==etSQLESCAPE3)?'"':'\''); /* Quote character */ | |
| 659 char *escarg; | |
| 660 | |
| 661 if( bArgList ){ | |
| 662 escarg = getTextArg(pArgList); | |
| 663 }else{ | |
| 664 escarg = va_arg(ap,char*); | |
| 665 } | |
| 666 isnull = escarg==0; | |
| 667 if( isnull ) escarg = (xtype==etSQLESCAPE2 ? "NULL" : "(NULL)"); | |
| 668 k = precision; | |
| 669 for(i=n=0; k!=0 && (ch=escarg[i])!=0; i++, k--){ | |
| 670 if( ch==q ) n++; | |
| 671 } | |
| 672 needQuote = !isnull && xtype==etSQLESCAPE2; | |
| 673 n += i + 1 + needQuote*2; | |
| 674 if( n>etBUFSIZE ){ | |
| 675 bufpt = zExtra = sqlite3Malloc( n ); | |
| 676 if( bufpt==0 ){ | |
| 677 setStrAccumError(pAccum, STRACCUM_NOMEM); | |
| 678 return; | |
| 679 } | |
| 680 }else{ | |
| 681 bufpt = buf; | |
| 682 } | |
| 683 j = 0; | |
| 684 if( needQuote ) bufpt[j++] = q; | |
| 685 k = i; | |
| 686 for(i=0; i<k; i++){ | |
| 687 bufpt[j++] = ch = escarg[i]; | |
| 688 if( ch==q ) bufpt[j++] = ch; | |
| 689 } | |
| 690 if( needQuote ) bufpt[j++] = q; | |
| 691 bufpt[j] = 0; | |
| 692 length = j; | |
| 693 /* The precision in %q and %Q means how many input characters to | |
| 694 ** consume, not the length of the output... | |
| 695 ** if( precision>=0 && precision<length ) length = precision; */ | |
| 696 break; | |
| 697 } | |
| 698 case etTOKEN: { | |
| 699 Token *pToken = va_arg(ap, Token*); | |
| 700 assert( bArgList==0 ); | |
| 701 if( pToken && pToken->n ){ | |
| 702 sqlite3StrAccumAppend(pAccum, (const char*)pToken->z, pToken->n); | |
| 703 } | |
| 704 length = width = 0; | |
| 705 break; | |
| 706 } | |
| 707 case etSRCLIST: { | |
| 708 SrcList *pSrc = va_arg(ap, SrcList*); | |
| 709 int k = va_arg(ap, int); | |
| 710 struct SrcList_item *pItem = &pSrc->a[k]; | |
| 711 assert( bArgList==0 ); | |
| 712 assert( k>=0 && k<pSrc->nSrc ); | |
| 713 if( pItem->zDatabase ){ | |
| 714 sqlite3StrAccumAppendAll(pAccum, pItem->zDatabase); | |
| 715 sqlite3StrAccumAppend(pAccum, ".", 1); | |
| 716 } | |
| 717 sqlite3StrAccumAppendAll(pAccum, pItem->zName); | |
| 718 length = width = 0; | |
| 719 break; | |
| 720 } | |
| 721 default: { | |
| 722 assert( xtype==etINVALID ); | |
| 723 return; | |
| 724 } | |
| 725 }/* End switch over the format type */ | |
| 726 /* | |
| 727 ** The text of the conversion is pointed to by "bufpt" and is | |
| 728 ** "length" characters long. The field width is "width". Do | |
| 729 ** the output. | |
| 730 */ | |
| 731 width -= length; | |
| 732 if( width>0 && !flag_leftjustify ) sqlite3AppendChar(pAccum, width, ' '); | |
| 733 sqlite3StrAccumAppend(pAccum, bufpt, length); | |
| 734 if( width>0 && flag_leftjustify ) sqlite3AppendChar(pAccum, width, ' '); | |
| 735 | |
| 736 if( zExtra ){ | |
| 737 sqlite3_free(zExtra); | |
| 738 zExtra = 0; | |
| 739 } | |
| 740 }/* End for loop over the format string */ | |
| 741 } /* End of function */ | |
| 742 | |
| 743 /* | |
| 744 ** Enlarge the memory allocation on a StrAccum object so that it is | |
| 745 ** able to accept at least N more bytes of text. | |
| 746 ** | |
| 747 ** Return the number of bytes of text that StrAccum is able to accept | |
| 748 ** after the attempted enlargement. The value returned might be zero. | |
| 749 */ | |
| 750 static int sqlite3StrAccumEnlarge(StrAccum *p, int N){ | |
| 751 char *zNew; | |
| 752 assert( p->nChar+N >= p->nAlloc ); /* Only called if really needed */ | |
| 753 if( p->accError ){ | |
| 754 testcase(p->accError==STRACCUM_TOOBIG); | |
| 755 testcase(p->accError==STRACCUM_NOMEM); | |
| 756 return 0; | |
| 757 } | |
| 758 if( !p->useMalloc ){ | |
| 759 N = p->nAlloc - p->nChar - 1; | |
| 760 setStrAccumError(p, STRACCUM_TOOBIG); | |
| 761 return N; | |
| 762 }else{ | |
| 763 char *zOld = (p->zText==p->zBase ? 0 : p->zText); | |
| 764 i64 szNew = p->nChar; | |
| 765 szNew += N + 1; | |
| 766 if( szNew > p->mxAlloc ){ | |
| 767 sqlite3StrAccumReset(p); | |
| 768 setStrAccumError(p, STRACCUM_TOOBIG); | |
| 769 return 0; | |
| 770 }else{ | |
| 771 p->nAlloc = (int)szNew; | |
| 772 } | |
| 773 if( p->useMalloc==1 ){ | |
| 774 zNew = sqlite3DbRealloc(p->db, zOld, p->nAlloc); | |
| 775 }else{ | |
| 776 zNew = sqlite3_realloc(zOld, p->nAlloc); | |
| 777 } | |
| 778 if( zNew ){ | |
| 779 assert( p->zText!=0 || p->nChar==0 ); | |
| 780 if( zOld==0 && p->nChar>0 ) memcpy(zNew, p->zText, p->nChar); | |
| 781 p->zText = zNew; | |
| 782 }else{ | |
| 783 sqlite3StrAccumReset(p); | |
| 784 setStrAccumError(p, STRACCUM_NOMEM); | |
| 785 return 0; | |
| 786 } | |
| 787 } | |
| 788 return N; | |
| 789 } | |
| 790 | |
| 791 /* | |
| 792 ** Append N copies of character c to the given string buffer. | |
| 793 */ | |
| 794 void sqlite3AppendChar(StrAccum *p, int N, char c){ | |
| 795 if( p->nChar+N >= p->nAlloc && (N = sqlite3StrAccumEnlarge(p, N))<=0 ) return; | |
| 796 while( (N--)>0 ) p->zText[p->nChar++] = c; | |
| 797 } | |
| 798 | |
| 799 /* | |
| 800 ** The StrAccum "p" is not large enough to accept N new bytes of z[]. | |
| 801 ** So enlarge if first, then do the append. | |
| 802 ** | |
| 803 ** This is a helper routine to sqlite3StrAccumAppend() that does special-case | |
| 804 ** work (enlarging the buffer) using tail recursion, so that the | |
| 805 ** sqlite3StrAccumAppend() routine can use fast calling semantics. | |
| 806 */ | |
| 807 static void SQLITE_NOINLINE enlargeAndAppend(StrAccum *p, const char *z, int N){ | |
| 808 N = sqlite3StrAccumEnlarge(p, N); | |
| 809 if( N>0 ){ | |
| 810 memcpy(&p->zText[p->nChar], z, N); | |
| 811 p->nChar += N; | |
| 812 } | |
| 813 } | |
| 814 | |
| 815 /* | |
| 816 ** Append N bytes of text from z to the StrAccum object. Increase the | |
| 817 ** size of the memory allocation for StrAccum if necessary. | |
| 818 */ | |
| 819 void sqlite3StrAccumAppend(StrAccum *p, const char *z, int N){ | |
| 820 assert( z!=0 ); | |
| 821 assert( p->zText!=0 || p->nChar==0 || p->accError ); | |
| 822 assert( N>=0 ); | |
| 823 assert( p->accError==0 || p->nAlloc==0 ); | |
| 824 if( p->nChar+N >= p->nAlloc ){ | |
| 825 enlargeAndAppend(p,z,N); | |
| 826 }else{ | |
| 827 assert( p->zText ); | |
| 828 p->nChar += N; | |
| 829 memcpy(&p->zText[p->nChar-N], z, N); | |
| 830 } | |
| 831 } | |
| 832 | |
| 833 /* | |
| 834 ** Append the complete text of zero-terminated string z[] to the p string. | |
| 835 */ | |
| 836 void sqlite3StrAccumAppendAll(StrAccum *p, const char *z){ | |
| 837 sqlite3StrAccumAppend(p, z, sqlite3Strlen30(z)); | |
| 838 } | |
| 839 | |
| 840 | |
| 841 /* | |
| 842 ** Finish off a string by making sure it is zero-terminated. | |
| 843 ** Return a pointer to the resulting string. Return a NULL | |
| 844 ** pointer if any kind of error was encountered. | |
| 845 */ | |
| 846 char *sqlite3StrAccumFinish(StrAccum *p){ | |
| 847 if( p->zText ){ | |
| 848 p->zText[p->nChar] = 0; | |
| 849 if( p->useMalloc && p->zText==p->zBase ){ | |
| 850 if( p->useMalloc==1 ){ | |
| 851 p->zText = sqlite3DbMallocRaw(p->db, p->nChar+1 ); | |
| 852 }else{ | |
| 853 p->zText = sqlite3_malloc(p->nChar+1); | |
| 854 } | |
| 855 if( p->zText ){ | |
| 856 memcpy(p->zText, p->zBase, p->nChar+1); | |
| 857 }else{ | |
| 858 setStrAccumError(p, STRACCUM_NOMEM); | |
| 859 } | |
| 860 } | |
| 861 } | |
| 862 return p->zText; | |
| 863 } | |
| 864 | |
| 865 /* | |
| 866 ** Reset an StrAccum string. Reclaim all malloced memory. | |
| 867 */ | |
| 868 void sqlite3StrAccumReset(StrAccum *p){ | |
| 869 if( p->zText!=p->zBase ){ | |
| 870 if( p->useMalloc==1 ){ | |
| 871 sqlite3DbFree(p->db, p->zText); | |
| 872 }else{ | |
| 873 sqlite3_free(p->zText); | |
| 874 } | |
| 875 } | |
| 876 p->zText = 0; | |
| 877 } | |
| 878 | |
| 879 /* | |
| 880 ** Initialize a string accumulator | |
| 881 */ | |
| 882 void sqlite3StrAccumInit(StrAccum *p, char *zBase, int n, int mx){ | |
| 883 p->zText = p->zBase = zBase; | |
| 884 p->db = 0; | |
| 885 p->nChar = 0; | |
| 886 p->nAlloc = n; | |
| 887 p->mxAlloc = mx; | |
| 888 p->useMalloc = 1; | |
| 889 p->accError = 0; | |
| 890 } | |
| 891 | |
| 892 /* | |
| 893 ** Print into memory obtained from sqliteMalloc(). Use the internal | |
| 894 ** %-conversion extensions. | |
| 895 */ | |
| 896 char *sqlite3VMPrintf(sqlite3 *db, const char *zFormat, va_list ap){ | |
| 897 char *z; | |
| 898 char zBase[SQLITE_PRINT_BUF_SIZE]; | |
| 899 StrAccum acc; | |
| 900 assert( db!=0 ); | |
| 901 sqlite3StrAccumInit(&acc, zBase, sizeof(zBase), | |
| 902 db->aLimit[SQLITE_LIMIT_LENGTH]); | |
| 903 acc.db = db; | |
| 904 sqlite3VXPrintf(&acc, SQLITE_PRINTF_INTERNAL, zFormat, ap); | |
| 905 z = sqlite3StrAccumFinish(&acc); | |
| 906 if( acc.accError==STRACCUM_NOMEM ){ | |
| 907 db->mallocFailed = 1; | |
| 908 } | |
| 909 return z; | |
| 910 } | |
| 911 | |
| 912 /* | |
| 913 ** Print into memory obtained from sqliteMalloc(). Use the internal | |
| 914 ** %-conversion extensions. | |
| 915 */ | |
| 916 char *sqlite3MPrintf(sqlite3 *db, const char *zFormat, ...){ | |
| 917 va_list ap; | |
| 918 char *z; | |
| 919 va_start(ap, zFormat); | |
| 920 z = sqlite3VMPrintf(db, zFormat, ap); | |
| 921 va_end(ap); | |
| 922 return z; | |
| 923 } | |
| 924 | |
| 925 /* | |
| 926 ** Like sqlite3MPrintf(), but call sqlite3DbFree() on zStr after formatting | |
| 927 ** the string and before returning. This routine is intended to be used | |
| 928 ** to modify an existing string. For example: | |
| 929 ** | |
| 930 ** x = sqlite3MPrintf(db, x, "prefix %s suffix", x); | |
| 931 ** | |
| 932 */ | |
| 933 char *sqlite3MAppendf(sqlite3 *db, char *zStr, const char *zFormat, ...){ | |
| 934 va_list ap; | |
| 935 char *z; | |
| 936 va_start(ap, zFormat); | |
| 937 z = sqlite3VMPrintf(db, zFormat, ap); | |
| 938 va_end(ap); | |
| 939 sqlite3DbFree(db, zStr); | |
| 940 return z; | |
| 941 } | |
| 942 | |
| 943 /* | |
| 944 ** Print into memory obtained from sqlite3_malloc(). Omit the internal | |
| 945 ** %-conversion extensions. | |
| 946 */ | |
| 947 char *sqlite3_vmprintf(const char *zFormat, va_list ap){ | |
| 948 char *z; | |
| 949 char zBase[SQLITE_PRINT_BUF_SIZE]; | |
| 950 StrAccum acc; | |
| 951 #ifndef SQLITE_OMIT_AUTOINIT | |
| 952 if( sqlite3_initialize() ) return 0; | |
| 953 #endif | |
| 954 sqlite3StrAccumInit(&acc, zBase, sizeof(zBase), SQLITE_MAX_LENGTH); | |
| 955 acc.useMalloc = 2; | |
| 956 sqlite3VXPrintf(&acc, 0, zFormat, ap); | |
| 957 z = sqlite3StrAccumFinish(&acc); | |
| 958 return z; | |
| 959 } | |
| 960 | |
| 961 /* | |
| 962 ** Print into memory obtained from sqlite3_malloc()(). Omit the internal | |
| 963 ** %-conversion extensions. | |
| 964 */ | |
| 965 char *sqlite3_mprintf(const char *zFormat, ...){ | |
| 966 va_list ap; | |
| 967 char *z; | |
| 968 #ifndef SQLITE_OMIT_AUTOINIT | |
| 969 if( sqlite3_initialize() ) return 0; | |
| 970 #endif | |
| 971 va_start(ap, zFormat); | |
| 972 z = sqlite3_vmprintf(zFormat, ap); | |
| 973 va_end(ap); | |
| 974 return z; | |
| 975 } | |
| 976 | |
| 977 /* | |
| 978 ** sqlite3_snprintf() works like snprintf() except that it ignores the | |
| 979 ** current locale settings. This is important for SQLite because we | |
| 980 ** are not able to use a "," as the decimal point in place of "." as | |
| 981 ** specified by some locales. | |
| 982 ** | |
| 983 ** Oops: The first two arguments of sqlite3_snprintf() are backwards | |
| 984 ** from the snprintf() standard. Unfortunately, it is too late to change | |
| 985 ** this without breaking compatibility, so we just have to live with the | |
| 986 ** mistake. | |
| 987 ** | |
| 988 ** sqlite3_vsnprintf() is the varargs version. | |
| 989 */ | |
| 990 char *sqlite3_vsnprintf(int n, char *zBuf, const char *zFormat, va_list ap){ | |
| 991 StrAccum acc; | |
| 992 if( n<=0 ) return zBuf; | |
| 993 sqlite3StrAccumInit(&acc, zBuf, n, 0); | |
| 994 acc.useMalloc = 0; | |
| 995 sqlite3VXPrintf(&acc, 0, zFormat, ap); | |
| 996 return sqlite3StrAccumFinish(&acc); | |
| 997 } | |
| 998 char *sqlite3_snprintf(int n, char *zBuf, const char *zFormat, ...){ | |
| 999 char *z; | |
| 1000 va_list ap; | |
| 1001 va_start(ap,zFormat); | |
| 1002 z = sqlite3_vsnprintf(n, zBuf, zFormat, ap); | |
| 1003 va_end(ap); | |
| 1004 return z; | |
| 1005 } | |
| 1006 | |
| 1007 /* | |
| 1008 ** This is the routine that actually formats the sqlite3_log() message. | |
| 1009 ** We house it in a separate routine from sqlite3_log() to avoid using | |
| 1010 ** stack space on small-stack systems when logging is disabled. | |
| 1011 ** | |
| 1012 ** sqlite3_log() must render into a static buffer. It cannot dynamically | |
| 1013 ** allocate memory because it might be called while the memory allocator | |
| 1014 ** mutex is held. | |
| 1015 */ | |
| 1016 static void renderLogMsg(int iErrCode, const char *zFormat, va_list ap){ | |
| 1017 StrAccum acc; /* String accumulator */ | |
| 1018 char zMsg[SQLITE_PRINT_BUF_SIZE*3]; /* Complete log message */ | |
| 1019 | |
| 1020 sqlite3StrAccumInit(&acc, zMsg, sizeof(zMsg), 0); | |
| 1021 acc.useMalloc = 0; | |
| 1022 sqlite3VXPrintf(&acc, 0, zFormat, ap); | |
| 1023 sqlite3GlobalConfig.xLog(sqlite3GlobalConfig.pLogArg, iErrCode, | |
| 1024 sqlite3StrAccumFinish(&acc)); | |
| 1025 } | |
| 1026 | |
| 1027 /* | |
| 1028 ** Format and write a message to the log if logging is enabled. | |
| 1029 */ | |
| 1030 void sqlite3_log(int iErrCode, const char *zFormat, ...){ | |
| 1031 va_list ap; /* Vararg list */ | |
| 1032 if( sqlite3GlobalConfig.xLog ){ | |
| 1033 va_start(ap, zFormat); | |
| 1034 renderLogMsg(iErrCode, zFormat, ap); | |
| 1035 va_end(ap); | |
| 1036 } | |
| 1037 } | |
| 1038 | |
| 1039 #if defined(SQLITE_DEBUG) | |
| 1040 /* | |
| 1041 ** A version of printf() that understands %lld. Used for debugging. | |
| 1042 ** The printf() built into some versions of windows does not understand %lld | |
| 1043 ** and segfaults if you give it a long long int. | |
| 1044 */ | |
| 1045 void sqlite3DebugPrintf(const char *zFormat, ...){ | |
| 1046 va_list ap; | |
| 1047 StrAccum acc; | |
| 1048 char zBuf[500]; | |
| 1049 sqlite3StrAccumInit(&acc, zBuf, sizeof(zBuf), 0); | |
| 1050 acc.useMalloc = 0; | |
| 1051 va_start(ap,zFormat); | |
| 1052 sqlite3VXPrintf(&acc, 0, zFormat, ap); | |
| 1053 va_end(ap); | |
| 1054 sqlite3StrAccumFinish(&acc); | |
| 1055 fprintf(stdout,"%s", zBuf); | |
| 1056 fflush(stdout); | |
| 1057 } | |
| 1058 #endif | |
| 1059 | |
| 1060 #ifdef SQLITE_DEBUG | |
| 1061 /************************************************************************* | |
| 1062 ** Routines for implementing the "TreeView" display of hierarchical | |
| 1063 ** data structures for debugging. | |
| 1064 ** | |
| 1065 ** The main entry points (coded elsewhere) are: | |
| 1066 ** sqlite3TreeViewExpr(0, pExpr, 0); | |
| 1067 ** sqlite3TreeViewExprList(0, pList, 0, 0); | |
| 1068 ** sqlite3TreeViewSelect(0, pSelect, 0); | |
| 1069 ** Insert calls to those routines while debugging in order to display | |
| 1070 ** a diagram of Expr, ExprList, and Select objects. | |
| 1071 ** | |
| 1072 */ | |
| 1073 /* Add a new subitem to the tree. The moreToFollow flag indicates that this | |
| 1074 ** is not the last item in the tree. */ | |
| 1075 TreeView *sqlite3TreeViewPush(TreeView *p, u8 moreToFollow){ | |
| 1076 if( p==0 ){ | |
| 1077 p = sqlite3_malloc( sizeof(*p) ); | |
| 1078 if( p==0 ) return 0; | |
| 1079 memset(p, 0, sizeof(*p)); | |
| 1080 }else{ | |
| 1081 p->iLevel++; | |
| 1082 } | |
| 1083 assert( moreToFollow==0 || moreToFollow==1 ); | |
| 1084 if( p->iLevel<sizeof(p->bLine) ) p->bLine[p->iLevel] = moreToFollow; | |
| 1085 return p; | |
| 1086 } | |
| 1087 /* Finished with one layer of the tree */ | |
| 1088 void sqlite3TreeViewPop(TreeView *p){ | |
| 1089 if( p==0 ) return; | |
| 1090 p->iLevel--; | |
| 1091 if( p->iLevel<0 ) sqlite3_free(p); | |
| 1092 } | |
| 1093 /* Generate a single line of output for the tree, with a prefix that contains | |
| 1094 ** all the appropriate tree lines */ | |
| 1095 void sqlite3TreeViewLine(TreeView *p, const char *zFormat, ...){ | |
| 1096 va_list ap; | |
| 1097 int i; | |
| 1098 StrAccum acc; | |
| 1099 char zBuf[500]; | |
| 1100 sqlite3StrAccumInit(&acc, zBuf, sizeof(zBuf), 0); | |
| 1101 acc.useMalloc = 0; | |
| 1102 if( p ){ | |
| 1103 for(i=0; i<p->iLevel && i<sizeof(p->bLine)-1; i++){ | |
| 1104 sqlite3StrAccumAppend(&acc, p->bLine[i] ? "| " : " ", 4); | |
| 1105 } | |
| 1106 sqlite3StrAccumAppend(&acc, p->bLine[i] ? "|-- " : "'-- ", 4); | |
| 1107 } | |
| 1108 va_start(ap, zFormat); | |
| 1109 sqlite3VXPrintf(&acc, 0, zFormat, ap); | |
| 1110 va_end(ap); | |
| 1111 if( zBuf[acc.nChar-1]!='\n' ) sqlite3StrAccumAppend(&acc, "\n", 1); | |
| 1112 sqlite3StrAccumFinish(&acc); | |
| 1113 fprintf(stdout,"%s", zBuf); | |
| 1114 fflush(stdout); | |
| 1115 } | |
| 1116 /* Shorthand for starting a new tree item that consists of a single label */ | |
| 1117 void sqlite3TreeViewItem(TreeView *p, const char *zLabel, u8 moreToFollow){ | |
| 1118 p = sqlite3TreeViewPush(p, moreToFollow); | |
| 1119 sqlite3TreeViewLine(p, "%s", zLabel); | |
| 1120 } | |
| 1121 #endif /* SQLITE_DEBUG */ | |
| 1122 | |
| 1123 /* | |
| 1124 ** variable-argument wrapper around sqlite3VXPrintf(). | |
| 1125 */ | |
| 1126 void sqlite3XPrintf(StrAccum *p, u32 bFlags, const char *zFormat, ...){ | |
| 1127 va_list ap; | |
| 1128 va_start(ap,zFormat); | |
| 1129 sqlite3VXPrintf(p, bFlags, zFormat, ap); | |
| 1130 va_end(ap); | |
| 1131 } | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 2363173002:
[sqlite] Remove obsolete reference version 3.8.7.4. (Closed)
