--- a/engine/sqlite/src/printf.cpp Wed Apr 28 13:20:05 2010 +0100
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,904 +0,0 @@
-/*
-** The "printf" code that follows dates from the 1980's. It is in
-** the public domain. The original comments are included here for
-** completeness. They are very out-of-date but might be useful as
-** an historical reference. Most of the "enhancements" have been backed
-** out so that the functionality is now the same as standard printf().
-**
-**************************************************************************
-**
-** The following modules is an enhanced replacement for the "printf" subroutines
-** found in the standard C library. The following enhancements are
-** supported:
-**
-** + Additional functions. The standard set of "printf" functions
-** includes printf, fprintf, sprintf, vprintf, vfprintf, and
-** vsprintf. This module adds the following:
-**
-** * snprintf -- Works like sprintf, but has an extra argument
-** which is the size of the buffer written to.
-**
-** * mprintf -- Similar to sprintf. Writes output to memory
-** obtained from malloc.
-**
-** * xprintf -- Calls a function to dispose of output.
-**
-** * nprintf -- No output, but returns the number of characters
-** that would have been output by printf.
-**
-** * A v- version (ex: vsnprintf) of every function is also
-** supplied.
-**
-** + A few extensions to the formatting notation are supported:
-**
-** * The "=" flag (similar to "-") causes the output to be
-** be centered in the appropriately sized field.
-**
-** * The %b field outputs an integer in binary notation.
-**
-** * The %c field now accepts a precision. The character output
-** is repeated by the number of times the precision specifies.
-**
-** * The %' field works like %c, but takes as its character the
-** next character of the format string, instead of the next
-** argument. For example, printf("%.78'-") prints 78 minus
-** signs, the same as printf("%.78c",'-').
-**
-** + When compiled using GCC on a SPARC, this version of printf is
-** faster than the library printf for SUN OS 4.1.
-**
-** + All functions are fully reentrant.
-**
-*/
-#include "sqliteInt.h"
-
-/*
-** Conversion types fall into various categories as defined by the
-** following enumeration.
-*/
-#define etRADIX 1 /* Integer types. %d, %x, %o, and so forth */
-#define etFLOAT 2 /* Floating point. %f */
-#define etEXP 3 /* Exponentional notation. %e and %E */
-#define etGENERIC 4 /* Floating or exponential, depending on exponent. %g */
-#define etSIZE 5 /* Return number of characters processed so far. %n */
-#define etSTRING 6 /* Strings. %s */
-#define etDYNSTRING 7 /* Dynamically allocated strings. %z */
-#define etPERCENT 8 /* Percent symbol. %% */
-#define etCHARX 9 /* Characters. %c */
-/* The rest are extensions, not normally found in printf() */
-#define etCHARLIT 10 /* Literal characters. %' */
-#define etSQLESCAPE 11 /* Strings with '\'' doubled. %q */
-#define etSQLESCAPE2 12 /* Strings with '\'' doubled and enclosed in '',
- NULL pointers replaced by SQL NULL. %Q */
-#define etTOKEN 13 /* a pointer to a Token structure */
-#define etSRCLIST 14 /* a pointer to a SrcList */
-#define etPOINTER 15 /* The %p conversion */
-#define etSQLESCAPE3 16 /* %w -> Strings with '\"' doubled */
-#define etORDINAL 17 /* %r -> 1st, 2nd, 3rd, 4th, etc. English only */
-
-
-/*
-** An "etByte" is an 8-bit unsigned value.
-*/
-typedef unsigned char etByte;
-
-/*
-** Each builtin conversion character (ex: the 'd' in "%d") is described
-** by an instance of the following structure
-*/
-typedef struct et_info { /* Information about each format field */
- char fmttype; /* The format field code letter */
- etByte base; /* The base for radix conversion */
- etByte flags; /* One or more of FLAG_ constants below */
- etByte type; /* Conversion paradigm */
- etByte charset; /* Offset into aDigits[] of the digits string */
- etByte prefix; /* Offset into aPrefix[] of the prefix string */
-} et_info;
-
-/*
-** Allowed values for et_info.flags
-*/
-#define FLAG_SIGNED 1 /* True if the value to convert is signed */
-#define FLAG_INTERN 2 /* True if for internal use only */
-#define FLAG_STRING 4 /* Allow infinity precision */
-
-
-/*
-** The following table is searched linearly, so it is good to put the
-** most frequently used conversion types first.
-*/
-static const char aDigits[] = "0123456789ABCDEF0123456789abcdef";
-static const char aPrefix[] = "-x0\000X0";
-static const et_info fmtinfo[] = {
- { 'd', 10, 1, etRADIX, 0, 0 },
- { 's', 0, 4, etSTRING, 0, 0 },
- { 'g', 0, 1, etGENERIC, 30, 0 },
- { 'z', 0, 4, etDYNSTRING, 0, 0 },
- { 'q', 0, 4, etSQLESCAPE, 0, 0 },
- { 'Q', 0, 4, etSQLESCAPE2, 0, 0 },
- { 'w', 0, 4, etSQLESCAPE3, 0, 0 },
- { 'c', 0, 0, etCHARX, 0, 0 },
- { 'o', 8, 0, etRADIX, 0, 2 },
- { 'u', 10, 0, etRADIX, 0, 0 },
- { 'x', 16, 0, etRADIX, 16, 1 },
- { 'X', 16, 0, etRADIX, 0, 4 },
-#ifndef SQLITE_OMIT_FLOATING_POINT
- { 'f', 0, 1, etFLOAT, 0, 0 },
- { 'e', 0, 1, etEXP, 30, 0 },
- { 'E', 0, 1, etEXP, 14, 0 },
- { 'G', 0, 1, etGENERIC, 14, 0 },
-#endif
- { 'i', 10, 1, etRADIX, 0, 0 },
- { 'n', 0, 0, etSIZE, 0, 0 },
- { '%', 0, 0, etPERCENT, 0, 0 },
- { 'p', 16, 0, etPOINTER, 0, 1 },
- { 'T', 0, 2, etTOKEN, 0, 0 },
- { 'S', 0, 2, etSRCLIST, 0, 0 },
- { 'r', 10, 3, etORDINAL, 0, 0 },
-};
-#define etNINFO (sizeof(fmtinfo)/sizeof(fmtinfo[0]))
-
-/*
-** If SQLITE_OMIT_FLOATING_POINT is defined, then none of the floating point
-** conversions will work.
-*/
-#ifndef SQLITE_OMIT_FLOATING_POINT
-/*
-** "*val" is a double such that 0.1 <= *val < 10.0
-** Return the ascii code for the leading digit of *val, then
-** multiply "*val" by 10.0 to renormalize.
-**
-** Example:
-** input: *val = 3.14159
-** output: *val = 1.4159 function return = '3'
-**
-** The counter *cnt is incremented each time. After counter exceeds
-** 16 (the number of significant digits in a 64-bit float) '0' is
-** always returned.
-*/
-static int et_getdigit(LONGDOUBLE_TYPE *val, int *cnt){
- int digit;
- LONGDOUBLE_TYPE d;
- if( (*cnt)++ >= 16 ) return '0';
- digit = (int)*val;
- d = digit;
- digit += '0';
- *val = (*val - d)*10.0;
- return digit;
-}
-#endif /* SQLITE_OMIT_FLOATING_POINT */
-
-/*
-** Append N space characters to the given string buffer.
-*/
-static void appendSpace(StrAccum *pAccum, int N){
- static const char zSpaces[] = " ";
- while( N>=sizeof(zSpaces)-1 ){
- sqlite3StrAccumAppend(pAccum, zSpaces, sizeof(zSpaces)-1);
- N -= sizeof(zSpaces)-1;
- }
- if( N>0 ){
- sqlite3StrAccumAppend(pAccum, zSpaces, N);
- }
-}
-
-/*
-** On machines with a small stack size, you can redefine the
-** SQLITE_PRINT_BUF_SIZE to be less than 350. But beware - for
-** smaller values some %f conversions may go into an infinite loop.
-*/
-#ifndef SQLITE_PRINT_BUF_SIZE
-# define SQLITE_PRINT_BUF_SIZE 350
-#endif
-#define etBUFSIZE SQLITE_PRINT_BUF_SIZE /* Size of the output buffer */
-
-/*
-** The root program. All variations call this core.
-**
-** INPUTS:
-** func This is a pointer to a function taking three arguments
-** 1. A pointer to anything. Same as the "arg" parameter.
-** 2. A pointer to the list of characters to be output
-** (Note, this list is NOT null terminated.)
-** 3. An integer number of characters to be output.
-** (Note: This number might be zero.)
-**
-** arg This is the pointer to anything which will be passed as the
-** first argument to "func". Use it for whatever you like.
-**
-** fmt This is the format string, as in the usual print.
-**
-** ap This is a pointer to a list of arguments. Same as in
-** vfprint.
-**
-** OUTPUTS:
-** The return value is the total number of characters sent to
-** the function "func". Returns -1 on a error.
-**
-** Note that the order in which automatic variables are declared below
-** seems to make a big difference in determining how fast this beast
-** will run.
-*/
-static void vxprintf(
- StrAccum *pAccum, /* Accumulate results here */
- int useExtended, /* Allow extended %-conversions */
- const char *fmt, /* Format string */
- va_list ap /* arguments */
-){
- int c; /* Next character in the format string */
- char *bufpt; /* Pointer to the conversion buffer */
- int precision; /* Precision of the current field */
- int length; /* Length of the field */
- int idx; /* A general purpose loop counter */
- int width; /* Width of the current field */
- etByte flag_leftjustify; /* True if "-" flag is present */
- etByte flag_plussign; /* True if "+" flag is present */
- etByte flag_blanksign; /* True if " " flag is present */
- etByte flag_alternateform; /* True if "#" flag is present */
- etByte flag_altform2; /* True if "!" flag is present */
- etByte flag_zeropad; /* True if field width constant starts with zero */
- etByte flag_long; /* True if "l" flag is present */
- etByte flag_longlong; /* True if the "ll" flag is present */
- etByte done; /* Loop termination flag */
- sqlite_uint64 longvalue; /* Value for integer types */
- LONGDOUBLE_TYPE realvalue; /* Value for real types */
- const et_info *infop; /* Pointer to the appropriate info structure */
- char buf[etBUFSIZE]; /* Conversion buffer */
- char prefix; /* Prefix character. "+" or "-" or " " or '\0'. */
- etByte errorflag = 0; /* True if an error is encountered */
- etByte xtype; /* Conversion paradigm */
- char *zExtra; /* Extra memory used for etTCLESCAPE conversions */
-#ifndef SQLITE_OMIT_FLOATING_POINT
- int exp, e2; /* exponent of real numbers */
- double rounder; /* Used for rounding floating point values */
- etByte flag_dp; /* True if decimal point should be shown */
- etByte flag_rtz; /* True if trailing zeros should be removed */
- etByte flag_exp; /* True to force display of the exponent */
- int nsd; /* Number of significant digits returned */
-#endif
-
- length = 0;
- bufpt = 0;
- for(; (c=(*fmt))!=0; ++fmt){
- if( c!='%' ){
- int amt;
- bufpt = (char *)fmt;
- amt = 1;
- while( (c=(*++fmt))!='%' && c!=0 ) amt++;
- sqlite3StrAccumAppend(pAccum, bufpt, amt);
- if( c==0 ) break;
- }
- if( (c=(*++fmt))==0 ){
- errorflag = 1;
- sqlite3StrAccumAppend(pAccum, "%", 1);
- break;
- }
- /* Find out what flags are present */
- flag_leftjustify = flag_plussign = flag_blanksign =
- flag_alternateform = flag_altform2 = flag_zeropad = 0;
- done = 0;
- do{
- switch( c ){
- case '-': flag_leftjustify = 1; break;
- case '+': flag_plussign = 1; break;
- case ' ': flag_blanksign = 1; break;
- case '#': flag_alternateform = 1; break;
- case '!': flag_altform2 = 1; break;
- case '0': flag_zeropad = 1; break;
- default: done = 1; break;
- }
- }while( !done && (c=(*++fmt))!=0 );
- /* Get the field width */
- width = 0;
- if( c=='*' ){
- width = va_arg(ap,int);
- if( width<0 ){
- flag_leftjustify = 1;
- width = -width;
- }
- c = *++fmt;
- }else{
- while( c>='0' && c<='9' ){
- width = width*10 + c - '0';
- c = *++fmt;
- }
- }
- if( width > etBUFSIZE-10 ){
- width = etBUFSIZE-10;
- }
- /* Get the precision */
- if( c=='.' ){
- precision = 0;
- c = *++fmt;
- if( c=='*' ){
- precision = va_arg(ap,int);
- if( precision<0 ) precision = -precision;
- c = *++fmt;
- }else{
- while( c>='0' && c<='9' ){
- precision = precision*10 + c - '0';
- c = *++fmt;
- }
- }
- }else{
- precision = -1;
- }
- /* Get the conversion type modifier */
- if( c=='l' ){
- flag_long = 1;
- c = *++fmt;
- if( c=='l' ){
- flag_longlong = 1;
- c = *++fmt;
- }else{
- flag_longlong = 0;
- }
- }else{
- flag_long = flag_longlong = 0;
- }
- /* Fetch the info entry for the field */
- infop = 0;
- for(idx=0; idx<etNINFO; idx++){
- if( c==fmtinfo[idx].fmttype ){
- infop = &fmtinfo[idx];
- if( useExtended || (infop->flags & FLAG_INTERN)==0 ){
- xtype = infop->type;
- }else{
- return;
- }
- break;
- }
- }
- zExtra = 0;
- if( infop==0 ){
- return;
- }
-
-
- /* Limit the precision to prevent overflowing buf[] during conversion */
- if( precision>etBUFSIZE-40 && (infop->flags & FLAG_STRING)==0 ){
- precision = etBUFSIZE-40;
- }
-
- /*
- ** At this point, variables are initialized as follows:
- **
- ** flag_alternateform TRUE if a '#' is present.
- ** flag_altform2 TRUE if a '!' is present.
- ** flag_plussign TRUE if a '+' is present.
- ** flag_leftjustify TRUE if a '-' is present or if the
- ** field width was negative.
- ** flag_zeropad TRUE if the width began with 0.
- ** flag_long TRUE if the letter 'l' (ell) prefixed
- ** the conversion character.
- ** flag_longlong TRUE if the letter 'll' (ell ell) prefixed
- ** the conversion character.
- ** flag_blanksign TRUE if a ' ' is present.
- ** width The specified field width. This is
- ** always non-negative. Zero is the default.
- ** precision The specified precision. The default
- ** is -1.
- ** xtype The class of the conversion.
- ** infop Pointer to the appropriate info struct.
- */
- switch( xtype ){
- case etPOINTER:
- flag_longlong = sizeof(char*)==sizeof(i64);
- flag_long = sizeof(char*)==sizeof(long int);
- /* Fall through into the next case */
- case etORDINAL:
- case etRADIX:
- if( infop->flags & FLAG_SIGNED ){
- i64 v;
- if( flag_longlong ) v = va_arg(ap,i64);
- else if( flag_long ) v = va_arg(ap,long int);
- else v = va_arg(ap,int);
- if( v<0 ){
- longvalue = -v;
- prefix = '-';
- }else{
- longvalue = v;
- if( flag_plussign ) prefix = '+';
- else if( flag_blanksign ) prefix = ' ';
- else prefix = 0;
- }
- }else{
- if( flag_longlong ) longvalue = va_arg(ap,u64);
- else if( flag_long ) longvalue = va_arg(ap,unsigned long int);
- else longvalue = va_arg(ap,unsigned int);
- prefix = 0;
- }
- if( longvalue==0 ) flag_alternateform = 0;
- if( flag_zeropad && precision<width-(prefix!=0) ){
- precision = width-(prefix!=0);
- }
- bufpt = &buf[etBUFSIZE-1];
- if( xtype==etORDINAL ){
- static const char zOrd[] = "thstndrd";
- int x = longvalue % 10;
- if( x>=4 || (longvalue/10)%10==1 ){
- x = 0;
- }
- buf[etBUFSIZE-3] = zOrd[x*2];
- buf[etBUFSIZE-2] = zOrd[x*2+1];
- bufpt -= 2;
- }
- {
- register const char *cset; /* Use registers for speed */
- register int base;
- cset = &aDigits[infop->charset];
- base = infop->base;
- do{ /* Convert to ascii */
- *(--bufpt) = cset[longvalue%base];
- longvalue = longvalue/base;
- }while( longvalue>0 );
- }
- length = &buf[etBUFSIZE-1]-bufpt;
- for(idx=precision-length; idx>0; idx--){
- *(--bufpt) = '0'; /* Zero pad */
- }
- if( prefix ) *(--bufpt) = prefix; /* Add sign */
- if( flag_alternateform && infop->prefix ){ /* Add "0" or "0x" */
- const char *pre;
- char x;
- pre = &aPrefix[infop->prefix];
- if( *bufpt!=pre[0] ){
- for(; (x=(*pre))!=0; pre++) *(--bufpt) = x;
- }
- }
- length = &buf[etBUFSIZE-1]-bufpt;
- break;
- case etFLOAT:
- case etEXP:
- case etGENERIC:
- realvalue = va_arg(ap,double);
-#ifndef SQLITE_OMIT_FLOATING_POINT
- if( precision<0 ) precision = 6; /* Set default precision */
- if( precision>etBUFSIZE/2-10 ) precision = etBUFSIZE/2-10;
- if( realvalue<0.0 ){
- realvalue = -realvalue;
- prefix = '-';
- }else{
- if( flag_plussign ) prefix = '+';
- else if( flag_blanksign ) prefix = ' ';
- else prefix = 0;
- }
- if( xtype==etGENERIC && precision>0 ) precision--;
-#if 0
- /* Rounding works like BSD when the constant 0.4999 is used. Wierd! */
- for(idx=precision, rounder=0.4999; idx>0; idx--, rounder*=0.1);
-#else
- /* It makes more sense to use 0.5 */
- for(idx=precision, rounder=0.5; idx>0; idx--, rounder*=0.1){}
-#endif
- if( xtype==etFLOAT ) realvalue += rounder;
- /* Normalize realvalue to within 10.0 > realvalue >= 1.0 */
- exp = 0;
- if( sqlite3_isnan(realvalue) ){
- bufpt = "NaN";
- length = 3;
- break;
- }
- if( realvalue>0.0 ){
- while( realvalue>=1e32 && exp<=350 ){ realvalue *= 1e-32; exp+=32; }
- while( realvalue>=1e8 && exp<=350 ){ realvalue *= 1e-8; exp+=8; }
- while( realvalue>=10.0 && exp<=350 ){ realvalue *= 0.1; exp++; }
- while( realvalue<1e-8 && exp>=-350 ){ realvalue *= 1e8; exp-=8; }
- while( realvalue<1.0 && exp>=-350 ){ realvalue *= 10.0; exp--; }
- if( exp>350 || exp<-350 ){
- if( prefix=='-' ){
- bufpt = "-Inf";
- }else if( prefix=='+' ){
- bufpt = "+Inf";
- }else{
- bufpt = "Inf";
- }
- length = strlen(bufpt);
- break;
- }
- }
- bufpt = buf;
- /*
- ** If the field type is etGENERIC, then convert to either etEXP
- ** or etFLOAT, as appropriate.
- */
- flag_exp = xtype==etEXP;
- if( xtype!=etFLOAT ){
- realvalue += rounder;
- if( realvalue>=10.0 ){ realvalue *= 0.1; exp++; }
- }
- if( xtype==etGENERIC ){
- flag_rtz = !flag_alternateform;
- if( exp<-4 || exp>precision ){
- xtype = etEXP;
- }else{
- precision = precision - exp;
- xtype = etFLOAT;
- }
- }else{
- flag_rtz = 0;
- }
- if( xtype==etEXP ){
- e2 = 0;
- }else{
- e2 = exp;
- }
- nsd = 0;
- flag_dp = (precision>0) | flag_alternateform | flag_altform2;
- /* The sign in front of the number */
- if( prefix ){
- *(bufpt++) = prefix;
- }
- /* Digits prior to the decimal point */
- if( e2<0 ){
- *(bufpt++) = '0';
- }else{
- for(; e2>=0; e2--){
- *(bufpt++) = et_getdigit(&realvalue,&nsd);
- }
- }
- /* The decimal point */
- if( flag_dp ){
- *(bufpt++) = '.';
- }
- /* "0" digits after the decimal point but before the first
- ** significant digit of the number */
- for(e2++; e2<0 && precision>0; precision--, e2++){
- *(bufpt++) = '0';
- }
- /* Significant digits after the decimal point */
- while( (precision--)>0 ){
- *(bufpt++) = et_getdigit(&realvalue,&nsd);
- }
- /* Remove trailing zeros and the "." if no digits follow the "." */
- if( flag_rtz && flag_dp ){
- while( bufpt[-1]=='0' ) *(--bufpt) = 0;
- assert( bufpt>buf );
- if( bufpt[-1]=='.' ){
- if( flag_altform2 ){
- *(bufpt++) = '0';
- }else{
- *(--bufpt) = 0;
- }
- }
- }
- /* Add the "eNNN" suffix */
- if( flag_exp || (xtype==etEXP && exp) ){
- *(bufpt++) = aDigits[infop->charset];
- if( exp<0 ){
- *(bufpt++) = '-'; exp = -exp;
- }else{
- *(bufpt++) = '+';
- }
- if( exp>=100 ){
- *(bufpt++) = (exp/100)+'0'; /* 100's digit */
- exp %= 100;
- }
- *(bufpt++) = exp/10+'0'; /* 10's digit */
- *(bufpt++) = exp%10+'0'; /* 1's digit */
- }
- *bufpt = 0;
-
- /* The converted number is in buf[] and zero terminated. Output it.
- ** Note that the number is in the usual order, not reversed as with
- ** integer conversions. */
- length = bufpt-buf;
- bufpt = buf;
-
- /* Special case: Add leading zeros if the flag_zeropad flag is
- ** set and we are not left justified */
- if( flag_zeropad && !flag_leftjustify && length < width){
- int i;
- int nPad = width - length;
- for(i=width; i>=nPad; i--){
- bufpt[i] = bufpt[i-nPad];
- }
- i = prefix!=0;
- while( nPad-- ) bufpt[i++] = '0';
- length = width;
- }
-#endif
- break;
- case etSIZE:
- *(va_arg(ap,int*)) = pAccum->nChar;
- length = width = 0;
- break;
- case etPERCENT:
- buf[0] = '%';
- bufpt = buf;
- length = 1;
- break;
- case etCHARLIT:
- case etCHARX:
- c = buf[0] = (xtype==etCHARX ? va_arg(ap,int) : *++fmt);
- if( precision>=0 ){
- for(idx=1; idx<precision; idx++) buf[idx] = c;
- length = precision;
- }else{
- length =1;
- }
- bufpt = buf;
- break;
- case etSTRING:
- case etDYNSTRING:
- bufpt = va_arg(ap,char*);
- if( bufpt==0 ){
- bufpt = "";
- }else if( xtype==etDYNSTRING ){
- zExtra = bufpt;
- }
- length = strlen(bufpt);
- if( precision>=0 && precision<length ) length = precision;
- break;
- case etSQLESCAPE:
- case etSQLESCAPE2:
- case etSQLESCAPE3: {
- int i, j, n, ch, isnull;
- int needQuote;
- char q = ((xtype==etSQLESCAPE3)?'"':'\''); /* Quote character */
- char *escarg = va_arg(ap,char*);
- isnull = escarg==0;
- if( isnull ) escarg = (char*)(xtype==etSQLESCAPE2 ? "NULL" : "(NULL)");
- for(i=n=0; (ch=escarg[i])!=0; i++){
- if( ch==q ) n++;
- }
- needQuote = !isnull && xtype==etSQLESCAPE2;
- n += i + 1 + needQuote*2;
- if( n>etBUFSIZE ){
- bufpt = zExtra = (char*)sqlite3_malloc( n );
- if( bufpt==0 ) return;
- }else{
- bufpt = buf;
- }
- j = 0;
- if( needQuote ) bufpt[j++] = q;
- for(i=0; (ch=escarg[i])!=0; i++){
- bufpt[j++] = ch;
- if( ch==q ) bufpt[j++] = ch;
- }
- if( needQuote ) bufpt[j++] = q;
- bufpt[j] = 0;
- length = j;
- /* The precision is ignored on %q and %Q */
- /* if( precision>=0 && precision<length ) length = precision; */
- break;
- }
- case etTOKEN: {
- Token *pToken = va_arg(ap, Token*);
- if( pToken && pToken->z ){
- sqlite3StrAccumAppend(pAccum, (const char*)pToken->z, pToken->n);
- }
- length = width = 0;
- break;
- }
- case etSRCLIST: {
- SrcList *pSrc = va_arg(ap, SrcList*);
- int k = va_arg(ap, int);
- SrcList::SrcList_item *pItem = &pSrc->a[k];
- assert( k>=0 && k<pSrc->nSrc );
- if( pItem->zDatabase && pItem->zDatabase[0] ){
- sqlite3StrAccumAppend(pAccum, pItem->zDatabase, -1);
- sqlite3StrAccumAppend(pAccum, ".", 1);
- }
- sqlite3StrAccumAppend(pAccum, pItem->zName, -1);
- length = width = 0;
- break;
- }
- }/* End switch over the format type */
- /*
- ** The text of the conversion is pointed to by "bufpt" and is
- ** "length" characters long. The field width is "width". Do
- ** the output.
- */
- if( !flag_leftjustify ){
- register int nspace;
- nspace = width-length;
- if( nspace>0 ){
- appendSpace(pAccum, nspace);
- }
- }
- if( length>0 ){
- sqlite3StrAccumAppend(pAccum, bufpt, length);
- }
- if( flag_leftjustify ){
- register int nspace;
- nspace = width-length;
- if( nspace>0 ){
- appendSpace(pAccum, nspace);
- }
- }
- if( zExtra ){
- sqlite3_free(zExtra);
- }
- }/* End for loop over the format string */
-} /* End of function */
-
-/*
-** Append N bytes of text from z to the StrAccum object.
-*/
-void sqlite3StrAccumAppend(StrAccum *p, const char *z, int N){
- if( p->tooBig | p->mallocFailed ){
- return;
- }
- if( N<0 ){
- N = strlen(z);
- }
- if( N==0 ){
- return;
- }
- if( p->nChar+N >= p->nAlloc ){
- char *zNew;
- if( !p->useMalloc ){
- p->tooBig = 1;
- N = p->nAlloc - p->nChar - 1;
- if( N<=0 ){
- return;
- }
- }else{
- p->nAlloc += p->nAlloc + N + 1;
- if( p->nAlloc > SQLITE_MAX_LENGTH ){
- p->nAlloc = SQLITE_MAX_LENGTH;
- if( p->nChar+N >= p->nAlloc ){
- sqlite3StrAccumReset(p);
- p->tooBig = 1;
- return;
- }
- }
- zNew = (char*)sqlite3_malloc( p->nAlloc );
- if( zNew ){
- memcpy(zNew, p->zText, p->nChar);
- sqlite3StrAccumReset(p);
- p->zText = zNew;
- }else{
- p->mallocFailed = 1;
- sqlite3StrAccumReset(p);
- return;
- }
- }
- }
- memcpy(&p->zText[p->nChar], z, N);
- p->nChar += N;
-}
-
-/*
-** Finish off a string by making sure it is zero-terminated.
-** Return a pointer to the resulting string. Return a NULL
-** pointer if any kind of error was encountered.
-*/
-char *sqlite3StrAccumFinish(StrAccum *p){
- if( p->zText ){
- p->zText[p->nChar] = 0;
- if( p->useMalloc && p->zText==p->zBase ){
- p->zText = (char*)sqlite3_malloc( p->nChar+1 );
- if( p->zText ){
- memcpy(p->zText, p->zBase, p->nChar+1);
- }else{
- p->mallocFailed = 1;
- }
- }
- }
- return p->zText;
-}
-
-/*
-** Reset an StrAccum string. Reclaim all malloced memory.
-*/
-void sqlite3StrAccumReset(StrAccum *p){
- if( p->zText!=p->zBase ){
- sqlite3_free(p->zText);
- p->zText = 0;
- }
-}
-
-/*
-** Initialize a string accumulator
-*/
-static void sqlite3StrAccumInit(StrAccum *p, char *zBase, int n){
- p->zText = p->zBase = zBase;
- p->nChar = 0;
- p->nAlloc = n;
- p->useMalloc = 1;
- p->tooBig = 0;
- p->mallocFailed = 0;
-}
-
-/*
-** Print into memory obtained from sqliteMalloc(). Use the internal
-** %-conversion extensions.
-*/
-char *sqlite3VMPrintf(sqlite3 *db, const char *zFormat, va_list ap){
- char *z;
- char zBase[SQLITE_PRINT_BUF_SIZE];
- StrAccum acc;
- sqlite3StrAccumInit(&acc, zBase, sizeof(zBase));
- vxprintf(&acc, 1, zFormat, ap);
- z = sqlite3StrAccumFinish(&acc);
- if( acc.mallocFailed && db ){
- db->mallocFailed = 1;
- }
- return z;
-}
-
-/*
-** Print into memory obtained from sqliteMalloc(). Use the internal
-** %-conversion extensions.
-*/
-char *sqlite3MPrintf(sqlite3 *db, const char *zFormat, ...){
- va_list ap;
- char *z;
- va_start(ap, zFormat);
- z = sqlite3VMPrintf(db, zFormat, ap);
- va_end(ap);
- return z;
-}
-
-/*
-** Print into memory obtained from sqlite3_malloc(). Omit the internal
-** %-conversion extensions.
-*/
-EXPORT_C char *sqlite3_vmprintf(const char *zFormat, va_list ap){
- char *z;
- char zBase[SQLITE_PRINT_BUF_SIZE];
- StrAccum acc;
- sqlite3StrAccumInit(&acc, zBase, sizeof(zBase));
- vxprintf(&acc, 0, zFormat, ap);
- z = sqlite3StrAccumFinish(&acc);
- return z;
-}
-
-/*
-** Print into memory obtained from sqlite3_malloc()(). Omit the internal
-** %-conversion extensions.
-*/
-EXPORT_C char *sqlite3_mprintf(const char *zFormat, ...){
- va_list ap;
- char *z;
- va_start(ap, zFormat);
- z = sqlite3_vmprintf(zFormat, ap);
- va_end(ap);
- return z;
-}
-
-/*
-** sqlite3_snprintf() works like snprintf() except that it ignores the
-** current locale settings. This is important for SQLite because we
-** are not able to use a "," as the decimal point in place of "." as
-** specified by some locales.
-*/
-EXPORT_C char *sqlite3_snprintf(int n, char *zBuf, const char *zFormat, ...){
- char *z;
- va_list ap;
- StrAccum acc;
-
- if( n<=0 ){
- return zBuf;
- }
- sqlite3StrAccumInit(&acc, zBuf, n);
- acc.useMalloc = 0;
- va_start(ap,zFormat);
- vxprintf(&acc, 0, zFormat, ap);
- va_end(ap);
- z = sqlite3StrAccumFinish(&acc);
- return z;
-}
-
-#if defined(SQLITE_TEST) || defined(SQLITE_DEBUG) || defined(SQLITE_MEMDEBUG)
-/*
-** A version of printf() that understands %lld. Used for debugging.
-** The printf() built into some versions of windows does not understand %lld
-** and segfaults if you give it a long long int.
-*/
-void sqlite3DebugPrintf(const char *zFormat, ...){
- va_list ap;
- StrAccum acc;
- char zBuf[500];
- sqlite3StrAccumInit(&acc, zBuf, sizeof(zBuf));
- acc.useMalloc = 0;
- va_start(ap,zFormat);
- vxprintf(&acc, 0, zFormat, ap);
- va_end(ap);
- sqlite3StrAccumFinish(&acc);
- fprintf(stdout,"%s", zBuf);
- fflush(stdout);
-}
-#endif