dvander@1203: /* dvander@1203: ** The "printf" code that follows dates from the 1980's. It is in dvander@1203: ** the public domain. The original comments are included here for dvander@1203: ** completeness. They are very out-of-date but might be useful as dvander@1203: ** an historical reference. Most of the "enhancements" have been backed dvander@1203: ** out so that the functionality is now the same as standard printf(). dvander@1203: ** dvander@1203: ************************************************************************** dvander@1203: ** dvander@1203: ** The following modules is an enhanced replacement for the "printf" subroutines dvander@1203: ** found in the standard C library. The following enhancements are dvander@1203: ** supported: dvander@1203: ** dvander@1203: ** + Additional functions. The standard set of "printf" functions dvander@1203: ** includes printf, fprintf, sprintf, vprintf, vfprintf, and dvander@1203: ** vsprintf. This module adds the following: dvander@1203: ** dvander@1203: ** * snprintf -- Works like sprintf, but has an extra argument dvander@1203: ** which is the size of the buffer written to. dvander@1203: ** dvander@1203: ** * mprintf -- Similar to sprintf. Writes output to memory dvander@1203: ** obtained from malloc. dvander@1203: ** dvander@1203: ** * xprintf -- Calls a function to dispose of output. dvander@1203: ** dvander@1203: ** * nprintf -- No output, but returns the number of characters dvander@1203: ** that would have been output by printf. dvander@1203: ** dvander@1203: ** * A v- version (ex: vsnprintf) of every function is also dvander@1203: ** supplied. dvander@1203: ** dvander@1203: ** + A few extensions to the formatting notation are supported: dvander@1203: ** dvander@1203: ** * The "=" flag (similar to "-") causes the output to be dvander@1203: ** be centered in the appropriately sized field. dvander@1203: ** dvander@1203: ** * The %b field outputs an integer in binary notation. dvander@1203: ** dvander@1203: ** * The %c field now accepts a precision. The character output dvander@1203: ** is repeated by the number of times the precision specifies. dvander@1203: ** dvander@1203: ** * The %' field works like %c, but takes as its character the dvander@1203: ** next character of the format string, instead of the next dvander@1203: ** argument. For example, printf("%.78'-") prints 78 minus dvander@1203: ** signs, the same as printf("%.78c",'-'). dvander@1203: ** dvander@1203: ** + When compiled using GCC on a SPARC, this version of printf is dvander@1203: ** faster than the library printf for SUN OS 4.1. dvander@1203: ** dvander@1203: ** + All functions are fully reentrant. dvander@1203: ** dvander@1203: */ dvander@1203: #include "sqliteInt.h" dvander@1203: #include dvander@1203: dvander@1203: /* dvander@1203: ** Conversion types fall into various categories as defined by the dvander@1203: ** following enumeration. dvander@1203: */ dvander@1203: #define etRADIX 1 /* Integer types. %d, %x, %o, and so forth */ dvander@1203: #define etFLOAT 2 /* Floating point. %f */ dvander@1203: #define etEXP 3 /* Exponentional notation. %e and %E */ dvander@1203: #define etGENERIC 4 /* Floating or exponential, depending on exponent. %g */ dvander@1203: #define etSIZE 5 /* Return number of characters processed so far. %n */ dvander@1203: #define etSTRING 6 /* Strings. %s */ dvander@1203: #define etDYNSTRING 7 /* Dynamically allocated strings. %z */ dvander@1203: #define etPERCENT 8 /* Percent symbol. %% */ dvander@1203: #define etCHARX 9 /* Characters. %c */ dvander@1203: /* The rest are extensions, not normally found in printf() */ dvander@1203: #define etCHARLIT 10 /* Literal characters. %' */ dvander@1203: #define etSQLESCAPE 11 /* Strings with '\'' doubled. %q */ dvander@1203: #define etSQLESCAPE2 12 /* Strings with '\'' doubled and enclosed in '', dvander@1203: NULL pointers replaced by SQL NULL. %Q */ dvander@1203: #define etTOKEN 13 /* a pointer to a Token structure */ dvander@1203: #define etSRCLIST 14 /* a pointer to a SrcList */ dvander@1203: #define etPOINTER 15 /* The %p conversion */ dvander@1203: #define etSQLESCAPE3 16 /* %w -> Strings with '\"' doubled */ dvander@1203: dvander@1203: dvander@1203: /* dvander@1203: ** An "etByte" is an 8-bit unsigned value. dvander@1203: */ dvander@1203: typedef unsigned char etByte; dvander@1203: dvander@1203: /* dvander@1203: ** Each builtin conversion character (ex: the 'd' in "%d") is described dvander@1203: ** by an instance of the following structure dvander@1203: */ dvander@1203: typedef struct et_info { /* Information about each format field */ dvander@1203: char fmttype; /* The format field code letter */ dvander@1203: etByte base; /* The base for radix conversion */ dvander@1203: etByte flags; /* One or more of FLAG_ constants below */ dvander@1203: etByte type; /* Conversion paradigm */ dvander@1203: etByte charset; /* Offset into aDigits[] of the digits string */ dvander@1203: etByte prefix; /* Offset into aPrefix[] of the prefix string */ dvander@1203: } et_info; dvander@1203: dvander@1203: /* dvander@1203: ** Allowed values for et_info.flags dvander@1203: */ dvander@1203: #define FLAG_SIGNED 1 /* True if the value to convert is signed */ dvander@1203: #define FLAG_INTERN 2 /* True if for internal use only */ dvander@1203: #define FLAG_STRING 4 /* Allow infinity precision */ dvander@1203: dvander@1203: dvander@1203: /* dvander@1203: ** The following table is searched linearly, so it is good to put the dvander@1203: ** most frequently used conversion types first. dvander@1203: */ dvander@1203: static const char aDigits[] = "0123456789ABCDEF0123456789abcdef"; dvander@1203: static const char aPrefix[] = "-x0\000X0"; dvander@1203: static const et_info fmtinfo[] = { dvander@1203: { 'd', 10, 1, etRADIX, 0, 0 }, dvander@1203: { 's', 0, 4, etSTRING, 0, 0 }, dvander@1203: { 'g', 0, 1, etGENERIC, 30, 0 }, dvander@1645: { 'z', 0, 4, etDYNSTRING, 0, 0 }, dvander@1203: { 'q', 0, 4, etSQLESCAPE, 0, 0 }, dvander@1203: { 'Q', 0, 4, etSQLESCAPE2, 0, 0 }, dvander@1203: { 'w', 0, 4, etSQLESCAPE3, 0, 0 }, dvander@1203: { 'c', 0, 0, etCHARX, 0, 0 }, dvander@1203: { 'o', 8, 0, etRADIX, 0, 2 }, dvander@1203: { 'u', 10, 0, etRADIX, 0, 0 }, dvander@1203: { 'x', 16, 0, etRADIX, 16, 1 }, dvander@1203: { 'X', 16, 0, etRADIX, 0, 4 }, dvander@1203: #ifndef SQLITE_OMIT_FLOATING_POINT dvander@1203: { 'f', 0, 1, etFLOAT, 0, 0 }, dvander@1203: { 'e', 0, 1, etEXP, 30, 0 }, dvander@1203: { 'E', 0, 1, etEXP, 14, 0 }, dvander@1203: { 'G', 0, 1, etGENERIC, 14, 0 }, dvander@1203: #endif dvander@1203: { 'i', 10, 1, etRADIX, 0, 0 }, dvander@1203: { 'n', 0, 0, etSIZE, 0, 0 }, dvander@1203: { '%', 0, 0, etPERCENT, 0, 0 }, dvander@1203: { 'p', 16, 0, etPOINTER, 0, 1 }, dvander@1203: { 'T', 0, 2, etTOKEN, 0, 0 }, dvander@1203: { 'S', 0, 2, etSRCLIST, 0, 0 }, dvander@1203: }; dvander@1203: #define etNINFO (sizeof(fmtinfo)/sizeof(fmtinfo[0])) dvander@1203: dvander@1203: /* dvander@1203: ** If SQLITE_OMIT_FLOATING_POINT is defined, then none of the floating point dvander@1203: ** conversions will work. dvander@1203: */ dvander@1203: #ifndef SQLITE_OMIT_FLOATING_POINT dvander@1203: /* dvander@1203: ** "*val" is a double such that 0.1 <= *val < 10.0 dvander@1203: ** Return the ascii code for the leading digit of *val, then dvander@1203: ** multiply "*val" by 10.0 to renormalize. dvander@1203: ** dvander@1203: ** Example: dvander@1203: ** input: *val = 3.14159 dvander@1203: ** output: *val = 1.4159 function return = '3' dvander@1203: ** dvander@1203: ** The counter *cnt is incremented each time. After counter exceeds dvander@1203: ** 16 (the number of significant digits in a 64-bit float) '0' is dvander@1203: ** always returned. dvander@1203: */ dvander@1203: static int et_getdigit(LONGDOUBLE_TYPE *val, int *cnt){ dvander@1203: int digit; dvander@1203: LONGDOUBLE_TYPE d; dvander@1203: if( (*cnt)++ >= 16 ) return '0'; dvander@1203: digit = (int)*val; dvander@1203: d = digit; dvander@1203: digit += '0'; dvander@1203: *val = (*val - d)*10.0; dvander@1203: return digit; dvander@1203: } dvander@1203: #endif /* SQLITE_OMIT_FLOATING_POINT */ dvander@1203: dvander@1203: /* dvander@1203: ** On machines with a small stack size, you can redefine the dvander@1203: ** SQLITE_PRINT_BUF_SIZE to be less than 350. But beware - for dvander@1203: ** smaller values some %f conversions may go into an infinite loop. dvander@1203: */ dvander@1203: #ifndef SQLITE_PRINT_BUF_SIZE dvander@1203: # define SQLITE_PRINT_BUF_SIZE 350 dvander@1203: #endif dvander@1203: #define etBUFSIZE SQLITE_PRINT_BUF_SIZE /* Size of the output buffer */ dvander@1203: dvander@1203: /* dvander@1203: ** The root program. All variations call this core. dvander@1203: ** dvander@1203: ** INPUTS: dvander@1203: ** func This is a pointer to a function taking three arguments dvander@1203: ** 1. A pointer to anything. Same as the "arg" parameter. dvander@1203: ** 2. A pointer to the list of characters to be output dvander@1203: ** (Note, this list is NOT null terminated.) dvander@1203: ** 3. An integer number of characters to be output. dvander@1203: ** (Note: This number might be zero.) dvander@1203: ** dvander@1203: ** arg This is the pointer to anything which will be passed as the dvander@1203: ** first argument to "func". Use it for whatever you like. dvander@1203: ** dvander@1203: ** fmt This is the format string, as in the usual print. dvander@1203: ** dvander@1203: ** ap This is a pointer to a list of arguments. Same as in dvander@1203: ** vfprint. dvander@1203: ** dvander@1203: ** OUTPUTS: dvander@1203: ** The return value is the total number of characters sent to dvander@1203: ** the function "func". Returns -1 on a error. dvander@1203: ** dvander@1203: ** Note that the order in which automatic variables are declared below dvander@1203: ** seems to make a big difference in determining how fast this beast dvander@1203: ** will run. dvander@1203: */ dvander@1203: static int vxprintf( dvander@1203: void (*func)(void*,const char*,int), /* Consumer of text */ dvander@1203: void *arg, /* First argument to the consumer */ dvander@1203: int useExtended, /* Allow extended %-conversions */ dvander@1203: const char *fmt, /* Format string */ dvander@1203: va_list ap /* arguments */ dvander@1203: ){ dvander@1203: int c; /* Next character in the format string */ dvander@1203: char *bufpt; /* Pointer to the conversion buffer */ dvander@1203: int precision; /* Precision of the current field */ dvander@1203: int length; /* Length of the field */ dvander@1203: int idx; /* A general purpose loop counter */ dvander@1203: int count; /* Total number of characters output */ dvander@1203: int width; /* Width of the current field */ dvander@1203: etByte flag_leftjustify; /* True if "-" flag is present */ dvander@1203: etByte flag_plussign; /* True if "+" flag is present */ dvander@1203: etByte flag_blanksign; /* True if " " flag is present */ dvander@1203: etByte flag_alternateform; /* True if "#" flag is present */ dvander@1203: etByte flag_altform2; /* True if "!" flag is present */ dvander@1203: etByte flag_zeropad; /* True if field width constant starts with zero */ dvander@1203: etByte flag_long; /* True if "l" flag is present */ dvander@1203: etByte flag_longlong; /* True if the "ll" flag is present */ dvander@1203: etByte done; /* Loop termination flag */ dvander@1203: sqlite_uint64 longvalue; /* Value for integer types */ dvander@1203: LONGDOUBLE_TYPE realvalue; /* Value for real types */ dvander@1203: const et_info *infop; /* Pointer to the appropriate info structure */ dvander@1203: char buf[etBUFSIZE]; /* Conversion buffer */ dvander@1203: char prefix; /* Prefix character. "+" or "-" or " " or '\0'. */ dvander@1203: etByte errorflag = 0; /* True if an error is encountered */ dvander@1203: etByte xtype; /* Conversion paradigm */ dvander@1203: char *zExtra; /* Extra memory used for etTCLESCAPE conversions */ dvander@1203: static const char spaces[] = dvander@1203: " "; dvander@1203: #define etSPACESIZE (sizeof(spaces)-1) dvander@1203: #ifndef SQLITE_OMIT_FLOATING_POINT dvander@1203: int exp, e2; /* exponent of real numbers */ dvander@1203: double rounder; /* Used for rounding floating point values */ dvander@1203: etByte flag_dp; /* True if decimal point should be shown */ dvander@1203: etByte flag_rtz; /* True if trailing zeros should be removed */ dvander@1203: etByte flag_exp; /* True to force display of the exponent */ dvander@1203: int nsd; /* Number of significant digits returned */ dvander@1203: #endif dvander@1203: dvander@1203: func(arg,"",0); dvander@1203: count = length = 0; dvander@1203: bufpt = 0; dvander@1203: for(; (c=(*fmt))!=0; ++fmt){ dvander@1203: if( c!='%' ){ dvander@1203: int amt; dvander@1203: bufpt = (char *)fmt; dvander@1203: amt = 1; dvander@1203: while( (c=(*++fmt))!='%' && c!=0 ) amt++; dvander@1203: (*func)(arg,bufpt,amt); dvander@1203: count += amt; dvander@1203: if( c==0 ) break; dvander@1203: } dvander@1203: if( (c=(*++fmt))==0 ){ dvander@1203: errorflag = 1; dvander@1203: (*func)(arg,"%",1); dvander@1203: count++; dvander@1203: break; dvander@1203: } dvander@1203: /* Find out what flags are present */ dvander@1203: flag_leftjustify = flag_plussign = flag_blanksign = dvander@1203: flag_alternateform = flag_altform2 = flag_zeropad = 0; dvander@1203: done = 0; dvander@1203: do{ dvander@1203: switch( c ){ dvander@1203: case '-': flag_leftjustify = 1; break; dvander@1203: case '+': flag_plussign = 1; break; dvander@1203: case ' ': flag_blanksign = 1; break; dvander@1203: case '#': flag_alternateform = 1; break; dvander@1203: case '!': flag_altform2 = 1; break; dvander@1203: case '0': flag_zeropad = 1; break; dvander@1203: default: done = 1; break; dvander@1203: } dvander@1203: }while( !done && (c=(*++fmt))!=0 ); dvander@1203: /* Get the field width */ dvander@1203: width = 0; dvander@1203: if( c=='*' ){ dvander@1203: width = va_arg(ap,int); dvander@1203: if( width<0 ){ dvander@1203: flag_leftjustify = 1; dvander@1203: width = -width; dvander@1203: } dvander@1203: c = *++fmt; dvander@1203: }else{ dvander@1203: while( c>='0' && c<='9' ){ dvander@1203: width = width*10 + c - '0'; dvander@1203: c = *++fmt; dvander@1203: } dvander@1203: } dvander@1203: if( width > etBUFSIZE-10 ){ dvander@1203: width = etBUFSIZE-10; dvander@1203: } dvander@1203: /* Get the precision */ dvander@1203: if( c=='.' ){ dvander@1203: precision = 0; dvander@1203: c = *++fmt; dvander@1203: if( c=='*' ){ dvander@1203: precision = va_arg(ap,int); dvander@1203: if( precision<0 ) precision = -precision; dvander@1203: c = *++fmt; dvander@1203: }else{ dvander@1203: while( c>='0' && c<='9' ){ dvander@1203: precision = precision*10 + c - '0'; dvander@1203: c = *++fmt; dvander@1203: } dvander@1203: } dvander@1203: }else{ dvander@1203: precision = -1; dvander@1203: } dvander@1203: /* Get the conversion type modifier */ dvander@1203: if( c=='l' ){ dvander@1203: flag_long = 1; dvander@1203: c = *++fmt; dvander@1203: if( c=='l' ){ dvander@1203: flag_longlong = 1; dvander@1203: c = *++fmt; dvander@1203: }else{ dvander@1203: flag_longlong = 0; dvander@1203: } dvander@1203: }else{ dvander@1203: flag_long = flag_longlong = 0; dvander@1203: } dvander@1203: /* Fetch the info entry for the field */ dvander@1203: infop = 0; dvander@1203: for(idx=0; idxflags & FLAG_INTERN)==0 ){ dvander@1203: xtype = infop->type; dvander@1203: }else{ dvander@1203: return -1; dvander@1203: } dvander@1203: break; dvander@1203: } dvander@1203: } dvander@1203: zExtra = 0; dvander@1203: if( infop==0 ){ dvander@1203: return -1; dvander@1203: } dvander@1203: dvander@1203: dvander@1203: /* Limit the precision to prevent overflowing buf[] during conversion */ dvander@1203: if( precision>etBUFSIZE-40 && (infop->flags & FLAG_STRING)==0 ){ dvander@1203: precision = etBUFSIZE-40; dvander@1203: } dvander@1203: dvander@1203: /* dvander@1203: ** At this point, variables are initialized as follows: dvander@1203: ** dvander@1203: ** flag_alternateform TRUE if a '#' is present. dvander@1203: ** flag_altform2 TRUE if a '!' is present. dvander@1203: ** flag_plussign TRUE if a '+' is present. dvander@1203: ** flag_leftjustify TRUE if a '-' is present or if the dvander@1203: ** field width was negative. dvander@1203: ** flag_zeropad TRUE if the width began with 0. dvander@1203: ** flag_long TRUE if the letter 'l' (ell) prefixed dvander@1203: ** the conversion character. dvander@1203: ** flag_longlong TRUE if the letter 'll' (ell ell) prefixed dvander@1203: ** the conversion character. dvander@1203: ** flag_blanksign TRUE if a ' ' is present. dvander@1203: ** width The specified field width. This is dvander@1203: ** always non-negative. Zero is the default. dvander@1203: ** precision The specified precision. The default dvander@1203: ** is -1. dvander@1203: ** xtype The class of the conversion. dvander@1203: ** infop Pointer to the appropriate info struct. dvander@1203: */ dvander@1203: switch( xtype ){ dvander@1203: case etPOINTER: dvander@1203: flag_longlong = sizeof(char*)==sizeof(i64); dvander@1203: flag_long = sizeof(char*)==sizeof(long int); dvander@1203: /* Fall through into the next case */ dvander@1203: case etRADIX: dvander@1203: if( infop->flags & FLAG_SIGNED ){ dvander@1203: i64 v; dvander@1203: if( flag_longlong ) v = va_arg(ap,i64); dvander@1203: else if( flag_long ) v = va_arg(ap,long int); dvander@1203: else v = va_arg(ap,int); dvander@1203: if( v<0 ){ dvander@1203: longvalue = -v; dvander@1203: prefix = '-'; dvander@1203: }else{ dvander@1203: longvalue = v; dvander@1203: if( flag_plussign ) prefix = '+'; dvander@1203: else if( flag_blanksign ) prefix = ' '; dvander@1203: else prefix = 0; dvander@1203: } dvander@1203: }else{ dvander@1203: if( flag_longlong ) longvalue = va_arg(ap,u64); dvander@1203: else if( flag_long ) longvalue = va_arg(ap,unsigned long int); dvander@1203: else longvalue = va_arg(ap,unsigned int); dvander@1203: prefix = 0; dvander@1203: } dvander@1203: if( longvalue==0 ) flag_alternateform = 0; dvander@1203: if( flag_zeropad && precisioncharset]; dvander@1203: base = infop->base; dvander@1203: do{ /* Convert to ascii */ dvander@1203: *(--bufpt) = cset[longvalue%base]; dvander@1203: longvalue = longvalue/base; dvander@1203: }while( longvalue>0 ); dvander@1203: } dvander@1203: length = &buf[etBUFSIZE-1]-bufpt; dvander@1203: for(idx=precision-length; idx>0; idx--){ dvander@1203: *(--bufpt) = '0'; /* Zero pad */ dvander@1203: } dvander@1203: if( prefix ) *(--bufpt) = prefix; /* Add sign */ dvander@1203: if( flag_alternateform && infop->prefix ){ /* Add "0" or "0x" */ dvander@1203: const char *pre; dvander@1203: char x; dvander@1203: pre = &aPrefix[infop->prefix]; dvander@1203: if( *bufpt!=pre[0] ){ dvander@1203: for(; (x=(*pre))!=0; pre++) *(--bufpt) = x; dvander@1203: } dvander@1203: } dvander@1203: length = &buf[etBUFSIZE-1]-bufpt; dvander@1203: break; dvander@1203: case etFLOAT: dvander@1203: case etEXP: dvander@1203: case etGENERIC: dvander@1203: realvalue = va_arg(ap,double); dvander@1203: #ifndef SQLITE_OMIT_FLOATING_POINT dvander@1203: if( precision<0 ) precision = 6; /* Set default precision */ dvander@1203: if( precision>etBUFSIZE/2-10 ) precision = etBUFSIZE/2-10; dvander@1203: if( realvalue<0.0 ){ dvander@1203: realvalue = -realvalue; dvander@1203: prefix = '-'; dvander@1203: }else{ dvander@1203: if( flag_plussign ) prefix = '+'; dvander@1203: else if( flag_blanksign ) prefix = ' '; dvander@1203: else prefix = 0; dvander@1203: } dvander@1203: if( xtype==etGENERIC && precision>0 ) precision--; dvander@1203: #if 0 dvander@1203: /* Rounding works like BSD when the constant 0.4999 is used. Wierd! */ dvander@1203: for(idx=precision, rounder=0.4999; idx>0; idx--, rounder*=0.1); dvander@1203: #else dvander@1203: /* It makes more sense to use 0.5 */ dvander@1203: for(idx=precision, rounder=0.5; idx>0; idx--, rounder*=0.1){} dvander@1203: #endif dvander@1203: if( xtype==etFLOAT ) realvalue += rounder; dvander@1203: /* Normalize realvalue to within 10.0 > realvalue >= 1.0 */ dvander@1203: exp = 0; dvander@1203: if( sqlite3_isnan(realvalue) ){ dvander@1203: bufpt = "NaN"; dvander@1203: length = 3; dvander@1203: break; dvander@1203: } dvander@1203: if( realvalue>0.0 ){ dvander@1203: while( realvalue>=1e32 && exp<=350 ){ realvalue *= 1e-32; exp+=32; } dvander@1203: while( realvalue>=1e8 && exp<=350 ){ realvalue *= 1e-8; exp+=8; } dvander@1203: while( realvalue>=10.0 && exp<=350 ){ realvalue *= 0.1; exp++; } dvander@1203: while( realvalue<1e-8 && exp>=-350 ){ realvalue *= 1e8; exp-=8; } dvander@1203: while( realvalue<1.0 && exp>=-350 ){ realvalue *= 10.0; exp--; } dvander@1203: if( exp>350 || exp<-350 ){ dvander@1203: if( prefix=='-' ){ dvander@1203: bufpt = "-Inf"; dvander@1203: }else if( prefix=='+' ){ dvander@1203: bufpt = "+Inf"; dvander@1203: }else{ dvander@1203: bufpt = "Inf"; dvander@1203: } dvander@1203: length = strlen(bufpt); dvander@1203: break; dvander@1203: } dvander@1203: } dvander@1203: bufpt = buf; dvander@1203: /* dvander@1203: ** If the field type is etGENERIC, then convert to either etEXP dvander@1203: ** or etFLOAT, as appropriate. dvander@1203: */ dvander@1203: flag_exp = xtype==etEXP; dvander@1203: if( xtype!=etFLOAT ){ dvander@1203: realvalue += rounder; dvander@1203: if( realvalue>=10.0 ){ realvalue *= 0.1; exp++; } dvander@1203: } dvander@1203: if( xtype==etGENERIC ){ dvander@1203: flag_rtz = !flag_alternateform; dvander@1203: if( exp<-4 || exp>precision ){ dvander@1203: xtype = etEXP; dvander@1203: }else{ dvander@1203: precision = precision - exp; dvander@1203: xtype = etFLOAT; dvander@1203: } dvander@1203: }else{ dvander@1203: flag_rtz = 0; dvander@1203: } dvander@1203: if( xtype==etEXP ){ dvander@1203: e2 = 0; dvander@1203: }else{ dvander@1203: e2 = exp; dvander@1203: } dvander@1203: nsd = 0; dvander@1203: flag_dp = (precision>0) | flag_alternateform | flag_altform2; dvander@1203: /* The sign in front of the number */ dvander@1203: if( prefix ){ dvander@1203: *(bufpt++) = prefix; dvander@1203: } dvander@1203: /* Digits prior to the decimal point */ dvander@1203: if( e2<0 ){ dvander@1203: *(bufpt++) = '0'; dvander@1203: }else{ dvander@1203: for(; e2>=0; e2--){ dvander@1203: *(bufpt++) = et_getdigit(&realvalue,&nsd); dvander@1203: } dvander@1203: } dvander@1203: /* The decimal point */ dvander@1203: if( flag_dp ){ dvander@1203: *(bufpt++) = '.'; dvander@1203: } dvander@1203: /* "0" digits after the decimal point but before the first dvander@1203: ** significant digit of the number */ dvander@1203: for(e2++; e2<0 && precision>0; precision--, e2++){ dvander@1203: *(bufpt++) = '0'; dvander@1203: } dvander@1203: /* Significant digits after the decimal point */ dvander@1203: while( (precision--)>0 ){ dvander@1203: *(bufpt++) = et_getdigit(&realvalue,&nsd); dvander@1203: } dvander@1203: /* Remove trailing zeros and the "." if no digits follow the "." */ dvander@1203: if( flag_rtz && flag_dp ){ dvander@1203: while( bufpt[-1]=='0' ) *(--bufpt) = 0; dvander@1203: assert( bufpt>buf ); dvander@1203: if( bufpt[-1]=='.' ){ dvander@1203: if( flag_altform2 ){ dvander@1203: *(bufpt++) = '0'; dvander@1203: }else{ dvander@1203: *(--bufpt) = 0; dvander@1203: } dvander@1203: } dvander@1203: } dvander@1203: /* Add the "eNNN" suffix */ dvander@1203: if( flag_exp || (xtype==etEXP && exp) ){ dvander@1203: *(bufpt++) = aDigits[infop->charset]; dvander@1203: if( exp<0 ){ dvander@1203: *(bufpt++) = '-'; exp = -exp; dvander@1203: }else{ dvander@1203: *(bufpt++) = '+'; dvander@1203: } dvander@1203: if( exp>=100 ){ dvander@1203: *(bufpt++) = (exp/100)+'0'; /* 100's digit */ dvander@1203: exp %= 100; dvander@1203: } dvander@1203: *(bufpt++) = exp/10+'0'; /* 10's digit */ dvander@1203: *(bufpt++) = exp%10+'0'; /* 1's digit */ dvander@1203: } dvander@1203: *bufpt = 0; dvander@1203: dvander@1203: /* The converted number is in buf[] and zero terminated. Output it. dvander@1203: ** Note that the number is in the usual order, not reversed as with dvander@1203: ** integer conversions. */ dvander@1203: length = bufpt-buf; dvander@1203: bufpt = buf; dvander@1203: dvander@1203: /* Special case: Add leading zeros if the flag_zeropad flag is dvander@1203: ** set and we are not left justified */ dvander@1203: if( flag_zeropad && !flag_leftjustify && length < width){ dvander@1203: int i; dvander@1203: int nPad = width - length; dvander@1203: for(i=width; i>=nPad; i--){ dvander@1203: bufpt[i] = bufpt[i-nPad]; dvander@1203: } dvander@1203: i = prefix!=0; dvander@1203: while( nPad-- ) bufpt[i++] = '0'; dvander@1203: length = width; dvander@1203: } dvander@1203: #endif dvander@1203: break; dvander@1203: case etSIZE: dvander@1203: *(va_arg(ap,int*)) = count; dvander@1203: length = width = 0; dvander@1203: break; dvander@1203: case etPERCENT: dvander@1203: buf[0] = '%'; dvander@1203: bufpt = buf; dvander@1203: length = 1; dvander@1203: break; dvander@1203: case etCHARLIT: dvander@1203: case etCHARX: dvander@1203: c = buf[0] = (xtype==etCHARX ? va_arg(ap,int) : *++fmt); dvander@1203: if( precision>=0 ){ dvander@1203: for(idx=1; idx=0 && precisionetBUFSIZE ){ dvander@1645: bufpt = zExtra = sqlite3_malloc( n ); dvander@1203: if( bufpt==0 ) return -1; dvander@1203: }else{ dvander@1203: bufpt = buf; dvander@1203: } dvander@1203: j = 0; dvander@1203: if( needQuote ) bufpt[j++] = q; dvander@1203: for(i=0; (ch=escarg[i])!=0; i++){ dvander@1203: bufpt[j++] = ch; dvander@1203: if( ch==q ) bufpt[j++] = ch; dvander@1203: } dvander@1203: if( needQuote ) bufpt[j++] = q; dvander@1203: bufpt[j] = 0; dvander@1203: length = j; dvander@1203: /* The precision is ignored on %q and %Q */ dvander@1203: /* if( precision>=0 && precisionz ){ dvander@1203: (*func)(arg, (char*)pToken->z, pToken->n); dvander@1203: } dvander@1203: length = width = 0; dvander@1203: break; dvander@1203: } dvander@1203: case etSRCLIST: { dvander@1203: SrcList *pSrc = va_arg(ap, SrcList*); dvander@1203: int k = va_arg(ap, int); dvander@1203: struct SrcList_item *pItem = &pSrc->a[k]; dvander@1203: assert( k>=0 && knSrc ); dvander@1203: if( pItem->zDatabase && pItem->zDatabase[0] ){ dvander@1203: (*func)(arg, pItem->zDatabase, strlen(pItem->zDatabase)); dvander@1203: (*func)(arg, ".", 1); dvander@1203: } dvander@1203: (*func)(arg, pItem->zName, strlen(pItem->zName)); dvander@1203: length = width = 0; dvander@1203: break; dvander@1203: } dvander@1203: }/* End switch over the format type */ dvander@1203: /* dvander@1203: ** The text of the conversion is pointed to by "bufpt" and is dvander@1203: ** "length" characters long. The field width is "width". Do dvander@1203: ** the output. dvander@1203: */ dvander@1203: if( !flag_leftjustify ){ dvander@1203: register int nspace; dvander@1203: nspace = width-length; dvander@1203: if( nspace>0 ){ dvander@1203: count += nspace; dvander@1203: while( nspace>=etSPACESIZE ){ dvander@1203: (*func)(arg,spaces,etSPACESIZE); dvander@1203: nspace -= etSPACESIZE; dvander@1203: } dvander@1203: if( nspace>0 ) (*func)(arg,spaces,nspace); dvander@1203: } dvander@1203: } dvander@1203: if( length>0 ){ dvander@1203: (*func)(arg,bufpt,length); dvander@1203: count += length; dvander@1203: } dvander@1203: if( flag_leftjustify ){ dvander@1203: register int nspace; dvander@1203: nspace = width-length; dvander@1203: if( nspace>0 ){ dvander@1203: count += nspace; dvander@1203: while( nspace>=etSPACESIZE ){ dvander@1203: (*func)(arg,spaces,etSPACESIZE); dvander@1203: nspace -= etSPACESIZE; dvander@1203: } dvander@1203: if( nspace>0 ) (*func)(arg,spaces,nspace); dvander@1203: } dvander@1203: } dvander@1203: if( zExtra ){ dvander@1645: sqlite3_free(zExtra); dvander@1203: } dvander@1203: }/* End for loop over the format string */ dvander@1203: return errorflag ? -1 : count; dvander@1203: } /* End of function */ dvander@1203: dvander@1203: dvander@1203: /* This structure is used to store state information about the dvander@1203: ** write to memory that is currently in progress. dvander@1203: */ dvander@1203: struct sgMprintf { dvander@1203: char *zBase; /* A base allocation */ dvander@1203: char *zText; /* The string collected so far */ dvander@1203: int nChar; /* Length of the string so far */ dvander@1203: int nTotal; /* Output size if unconstrained */ dvander@1203: int nAlloc; /* Amount of space allocated in zText */ dvander@1203: void *(*xRealloc)(void*,int); /* Function used to realloc memory */ dvander@1645: int iMallocFailed; /* True if xRealloc() has failed */ dvander@1203: }; dvander@1203: dvander@1203: /* dvander@1203: ** This function implements the callback from vxprintf. dvander@1203: ** dvander@1203: ** This routine add nNewChar characters of text in zNewText to dvander@1203: ** the sgMprintf structure pointed to by "arg". dvander@1203: */ dvander@1203: static void mout(void *arg, const char *zNewText, int nNewChar){ dvander@1203: struct sgMprintf *pM = (struct sgMprintf*)arg; dvander@1645: if( pM->iMallocFailed ) return; dvander@1203: pM->nTotal += nNewChar; dvander@1645: if( pM->zText ){ dvander@1645: if( pM->nChar + nNewChar + 1 > pM->nAlloc ){ dvander@1645: if( pM->xRealloc==0 ){ dvander@1645: nNewChar = pM->nAlloc - pM->nChar - 1; dvander@1203: }else{ dvander@1645: int nAlloc = pM->nChar + nNewChar*2 + 1; dvander@1645: if( pM->zText==pM->zBase ){ dvander@1645: pM->zText = pM->xRealloc(0, nAlloc); dvander@1645: if( pM->zText==0 ){ dvander@1645: pM->nAlloc = 0; dvander@1645: pM->iMallocFailed = 1; dvander@1645: return; dvander@1645: }else if( pM->nChar ){ dvander@1645: memcpy(pM->zText, pM->zBase, pM->nChar); dvander@1645: } dvander@1203: }else{ dvander@1645: char *zNew; dvander@1645: zNew = pM->xRealloc(pM->zText, nAlloc); dvander@1645: if( zNew ){ dvander@1645: pM->zText = zNew; dvander@1645: }else{ dvander@1645: pM->iMallocFailed = 1; dvander@1645: pM->xRealloc(pM->zText, 0); dvander@1645: pM->zText = 0; dvander@1645: pM->nAlloc = 0; dvander@1645: return; dvander@1645: } dvander@1203: } dvander@1645: pM->nAlloc = nAlloc; dvander@1203: } dvander@1203: } dvander@1203: if( nNewChar>0 ){ dvander@1203: memcpy(&pM->zText[pM->nChar], zNewText, nNewChar); dvander@1203: pM->nChar += nNewChar; dvander@1203: } dvander@1203: pM->zText[pM->nChar] = 0; dvander@1203: } dvander@1203: } dvander@1203: dvander@1203: /* dvander@1203: ** This routine is a wrapper around xprintf() that invokes mout() as dvander@1203: ** the consumer. dvander@1203: */ dvander@1203: static char *base_vprintf( dvander@1645: void *(*xRealloc)(void*, int), /* realloc() function. May be NULL */ dvander@1203: int useInternal, /* Use internal %-conversions if true */ dvander@1203: char *zInitBuf, /* Initially write here, before mallocing */ dvander@1203: int nInitBuf, /* Size of zInitBuf[] */ dvander@1203: const char *zFormat, /* format string */ dvander@1203: va_list ap /* arguments */ dvander@1203: ){ dvander@1203: struct sgMprintf sM; dvander@1203: sM.zBase = sM.zText = zInitBuf; dvander@1203: sM.nChar = sM.nTotal = 0; dvander@1203: sM.nAlloc = nInitBuf; dvander@1203: sM.xRealloc = xRealloc; dvander@1645: sM.iMallocFailed = 0; dvander@1203: vxprintf(mout, &sM, useInternal, zFormat, ap); dvander@1645: assert(sM.iMallocFailed==0 || sM.zText==0); dvander@1645: if( xRealloc && !sM.iMallocFailed ){ dvander@1203: if( sM.zText==sM.zBase ){ dvander@1203: sM.zText = xRealloc(0, sM.nChar+1); dvander@1203: if( sM.zText ){ dvander@1203: memcpy(sM.zText, sM.zBase, sM.nChar+1); dvander@1203: } dvander@1203: }else if( sM.nAlloc>sM.nChar+10 ){ dvander@1645: char *zNew; dvander@1645: sqlite3MallocBenignFailure(1); dvander@1645: zNew = xRealloc(sM.zText, sM.nChar+1); dvander@1203: if( zNew ){ dvander@1203: sM.zText = zNew; dvander@1203: } dvander@1203: } dvander@1203: } dvander@1203: return sM.zText; dvander@1203: } dvander@1203: dvander@1203: /* dvander@1203: ** Realloc that is a real function, not a macro. dvander@1203: */ dvander@1203: static void *printf_realloc(void *old, int size){ dvander@1645: return sqlite3_realloc(old, size); dvander@1203: } dvander@1203: dvander@1203: /* dvander@1203: ** Print into memory obtained from sqliteMalloc(). Use the internal dvander@1203: ** %-conversion extensions. dvander@1203: */ dvander@1645: char *sqlite3VMPrintf(sqlite3 *db, const char *zFormat, va_list ap){ dvander@1645: char *z; dvander@1203: char zBase[SQLITE_PRINT_BUF_SIZE]; dvander@1645: z = base_vprintf(printf_realloc, 1, zBase, sizeof(zBase), zFormat, ap); dvander@1645: if( z==0 && db!=0 ){ dvander@1645: db->mallocFailed = 1; dvander@1645: } dvander@1645: return z; dvander@1203: } dvander@1203: dvander@1203: /* dvander@1203: ** Print into memory obtained from sqliteMalloc(). Use the internal dvander@1203: ** %-conversion extensions. dvander@1203: */ dvander@1645: char *sqlite3MPrintf(sqlite3 *db, const char *zFormat, ...){ dvander@1203: va_list ap; dvander@1203: char *z; dvander@1203: char zBase[SQLITE_PRINT_BUF_SIZE]; dvander@1203: va_start(ap, zFormat); dvander@1203: z = base_vprintf(printf_realloc, 1, zBase, sizeof(zBase), zFormat, ap); dvander@1203: va_end(ap); dvander@1645: if( z==0 && db!=0 ){ dvander@1645: db->mallocFailed = 1; dvander@1645: } dvander@1203: return z; dvander@1203: } dvander@1203: dvander@1203: /* dvander@1203: ** Print into memory obtained from sqlite3_malloc(). Omit the internal dvander@1203: ** %-conversion extensions. dvander@1203: */ dvander@1203: char *sqlite3_vmprintf(const char *zFormat, va_list ap){ dvander@1203: char zBase[SQLITE_PRINT_BUF_SIZE]; dvander@1203: return base_vprintf(sqlite3_realloc, 0, zBase, sizeof(zBase), zFormat, ap); dvander@1203: } dvander@1203: dvander@1203: /* dvander@1203: ** Print into memory obtained from sqlite3_malloc()(). Omit the internal dvander@1203: ** %-conversion extensions. dvander@1203: */ dvander@1203: char *sqlite3_mprintf(const char *zFormat, ...){ dvander@1203: va_list ap; dvander@1203: char *z; dvander@1203: va_start(ap, zFormat); dvander@1203: z = sqlite3_vmprintf(zFormat, ap); dvander@1203: va_end(ap); dvander@1203: return z; dvander@1203: } dvander@1203: dvander@1203: /* dvander@1203: ** sqlite3_snprintf() works like snprintf() except that it ignores the dvander@1203: ** current locale settings. This is important for SQLite because we dvander@1203: ** are not able to use a "," as the decimal point in place of "." as dvander@1203: ** specified by some locales. dvander@1203: */ dvander@1203: char *sqlite3_snprintf(int n, char *zBuf, const char *zFormat, ...){ dvander@1203: char *z; dvander@1203: va_list ap; dvander@1203: dvander@1203: if( n<=0 ){ dvander@1203: return zBuf; dvander@1203: } dvander@1203: zBuf[0] = 0; dvander@1203: va_start(ap,zFormat); dvander@1203: z = base_vprintf(0, 0, zBuf, n, zFormat, ap); dvander@1203: va_end(ap); dvander@1203: return z; dvander@1203: } dvander@1203: dvander@1203: #if defined(SQLITE_TEST) || defined(SQLITE_DEBUG) || defined(SQLITE_MEMDEBUG) dvander@1203: /* dvander@1203: ** A version of printf() that understands %lld. Used for debugging. dvander@1203: ** The printf() built into some versions of windows does not understand %lld dvander@1203: ** and segfaults if you give it a long long int. dvander@1203: */ dvander@1203: void sqlite3DebugPrintf(const char *zFormat, ...){ dvander@1203: extern int getpid(void); dvander@1203: va_list ap; dvander@1203: char zBuf[500]; dvander@1203: va_start(ap, zFormat); dvander@1203: base_vprintf(0, 0, zBuf, sizeof(zBuf), zFormat, ap); dvander@1203: va_end(ap); dvander@1203: fprintf(stdout,"%s", zBuf); dvander@1203: fflush(stdout); dvander@1203: } dvander@1203: #endif