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-rw-r--r--src/sqlite/printf.c831
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diff --git a/src/sqlite/printf.c b/src/sqlite/printf.c
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+++ b/src/sqlite/printf.c
@@ -0,0 +1,831 @@
+/*
+** 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 They are very out-of-date but might be useful as
+** an historical reference.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 */
+#define etERROR 10 /* Used to indicate no such conversion type */
+/* The rest are extensions, not normally found in printf() */
+#define etCHARLIT 11 /* Literal characters. %' */
+#define etSQLESCAPE 12 /* Strings with '\'' doubled. %q */
+#define etSQLESCAPE2 13 /* Strings with '\'' doubled and enclosed in '',
+ NULL pointers replaced by SQL NULL. %Q */
+#define etTOKEN 14 /* a pointer to a Token structure */
+#define etSRCLIST 15 /* a pointer to a SrcList */
+#define etPOINTER 16 /* The %p conversion */
+
+
+/*
+** 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 },
+ { 'z', 0, 6, etDYNSTRING, 0, 0 },
+ { 'q', 0, 4, etSQLESCAPE, 0, 0 },
+ { 'Q', 0, 4, etSQLESCAPE2, 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 },
+ { 'f', 0, 1, etFLOAT, 0, 0 },
+ { 'e', 0, 1, etEXP, 30, 0 },
+ { 'E', 0, 1, etEXP, 14, 0 },
+ { 'g', 0, 1, etGENERIC, 30, 0 },
+ { 'G', 0, 1, etGENERIC, 14, 0 },
+ { '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 },
+};
+#define etNINFO (sizeof(fmtinfo)/sizeof(fmtinfo[0]))
+
+/*
+** If NOFLOATINGPOINT is defined, then none of the floating point
+** conversions will work.
+*/
+#ifndef etNOFLOATINGPOINT
+/*
+** "*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
+
+#define etBUFSIZE 1000 /* 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 int vxprintf(
+ void (*func)(void*,const char*,int), /* Consumer of text */
+ void *arg, /* First argument to the consumer */
+ 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 count; /* Total number of characters output */
+ 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_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 */
+ UINT64_TYPE 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 */
+ static const char spaces[] =
+ " ";
+#define etSPACESIZE (sizeof(spaces)-1)
+#ifndef etNOFLOATINGPOINT
+ int exp; /* 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
+
+ func(arg,"",0);
+ count = length = 0;
+ bufpt = 0;
+ for(; (c=(*fmt))!=0; ++fmt){
+ if( c!='%' ){
+ int amt;
+ bufpt = (char *)fmt;
+ amt = 1;
+ while( (c=(*++fmt))!='%' && c!=0 ) amt++;
+ (*func)(arg,bufpt,amt);
+ count += amt;
+ if( c==0 ) break;
+ }
+ if( (c=(*++fmt))==0 ){
+ errorflag = 1;
+ (*func)(arg,"%",1);
+ count++;
+ break;
+ }
+ /* Find out what flags are present */
+ flag_leftjustify = flag_plussign = flag_blanksign =
+ flag_alternateform = flag_zeropad = 0;
+ do{
+ switch( c ){
+ case '-': flag_leftjustify = 1; c = 0; break;
+ case '+': flag_plussign = 1; c = 0; break;
+ case ' ': flag_blanksign = 1; c = 0; break;
+ case '#': flag_alternateform = 1; c = 0; break;
+ case '0': flag_zeropad = 1; c = 0; break;
+ default: break;
+ }
+ }while( c==0 && (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;
+ xtype = etERROR;
+ for(idx=0; idx<etNINFO; idx++){
+ if( c==fmtinfo[idx].fmttype ){
+ infop = &fmtinfo[idx];
+ if( useExtended || (infop->flags & FLAG_INTERN)==0 ){
+ xtype = infop->type;
+ }
+ break;
+ }
+ }
+ zExtra = 0;
+
+ /* 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_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 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];
+ {
+ 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 etNOFLOATINGPOINT
+ if( precision<0 ) precision = 6; /* Set default precision */
+ if( precision>etBUFSIZE-10 ) precision = etBUFSIZE-10;
+ if( realvalue<0.0 ){
+ realvalue = -realvalue;
+ prefix = '-';
+ }else{
+ if( flag_plussign ) prefix = '+';
+ else if( flag_blanksign ) prefix = ' ';
+ else prefix = 0;
+ }
+ if( infop->type==etGENERIC && precision>0 ) precision--;
+ rounder = 0.0;
+#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( infop->type==etFLOAT ) realvalue += rounder;
+ /* Normalize realvalue to within 10.0 > realvalue >= 1.0 */
+ exp = 0;
+ if( realvalue>0.0 ){
+ 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 ){
+ bufpt = "NaN";
+ length = 3;
+ 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;
+ }
+ /*
+ ** The "exp+precision" test causes output to be of type etEXP if
+ ** the precision is too large to fit in buf[].
+ */
+ nsd = 0;
+ if( xtype==etFLOAT && exp+precision<etBUFSIZE-30 ){
+ flag_dp = (precision>0 || flag_alternateform);
+ if( prefix ) *(bufpt++) = prefix; /* Sign */
+ if( exp<0 ) *(bufpt++) = '0'; /* Digits before "." */
+ else for(; exp>=0; exp--) *(bufpt++) = et_getdigit(&realvalue,&nsd);
+ if( flag_dp ) *(bufpt++) = '.'; /* The decimal point */
+ for(exp++; exp<0 && precision>0; precision--, exp++){
+ *(bufpt++) = '0';
+ }
+ while( (precision--)>0 ) *(bufpt++) = et_getdigit(&realvalue,&nsd);
+ *(bufpt--) = 0; /* Null terminate */
+ if( flag_rtz && flag_dp ){ /* Remove trailing zeros and "." */
+ while( bufpt>=buf && *bufpt=='0' ) *(bufpt--) = 0;
+ if( bufpt>=buf && *bufpt=='.' ) *(bufpt--) = 0;
+ }
+ bufpt++; /* point to next free slot */
+ }else{ /* etEXP or etGENERIC */
+ flag_dp = (precision>0 || flag_alternateform);
+ if( prefix ) *(bufpt++) = prefix; /* Sign */
+ *(bufpt++) = et_getdigit(&realvalue,&nsd); /* First digit */
+ if( flag_dp ) *(bufpt++) = '.'; /* Decimal point */
+ while( (precision--)>0 ) *(bufpt++) = et_getdigit(&realvalue,&nsd);
+ bufpt--; /* point to last digit */
+ if( flag_rtz && flag_dp ){ /* Remove tail zeros */
+ while( bufpt>=buf && *bufpt=='0' ) *(bufpt--) = 0;
+ if( bufpt>=buf && *bufpt=='.' ) *(bufpt--) = 0;
+ }
+ bufpt++; /* point to next free slot */
+ if( exp || flag_exp ){
+ *(bufpt++) = aDigits[infop->charset];
+ if( exp<0 ){ *(bufpt++) = '-'; exp = -exp; } /* sign of 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 */
+ }
+ }
+ /* 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*)) = count;
+ 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:
+ {
+ int i, j, n, c, isnull;
+ int needQuote;
+ char *arg = va_arg(ap,char*);
+ isnull = arg==0;
+ if( isnull ) arg = (xtype==etSQLESCAPE2 ? "NULL" : "(NULL)");
+ for(i=n=0; (c=arg[i])!=0; i++){
+ if( c=='\'' ) n++;
+ }
+ needQuote = !isnull && xtype==etSQLESCAPE2;
+ n += i + 1 + needQuote*2;
+ if( n>etBUFSIZE ){
+ bufpt = zExtra = sqliteMalloc( n );
+ if( bufpt==0 ) return -1;
+ }else{
+ bufpt = buf;
+ }
+ j = 0;
+ if( needQuote ) bufpt[j++] = '\'';
+ for(i=0; (c=arg[i])!=0; i++){
+ bufpt[j++] = c;
+ if( c=='\'' ) bufpt[j++] = c;
+ }
+ if( needQuote ) bufpt[j++] = '\'';
+ bufpt[j] = 0;
+ length = j;
+ if( precision>=0 && precision<length ) length = precision;
+ }
+ break;
+ case etTOKEN: {
+ Token *pToken = va_arg(ap, Token*);
+ if( pToken && pToken->z ){
+ (*func)(arg, pToken->z, pToken->n);
+ }
+ length = width = 0;
+ break;
+ }
+ case etSRCLIST: {
+ SrcList *pSrc = va_arg(ap, SrcList*);
+ int k = va_arg(ap, int);
+ struct SrcList_item *pItem = &pSrc->a[k];
+ assert( k>=0 && k<pSrc->nSrc );
+ if( pItem->zDatabase && pItem->zDatabase[0] ){
+ (*func)(arg, pItem->zDatabase, strlen(pItem->zDatabase));
+ (*func)(arg, ".", 1);
+ }
+ (*func)(arg, pItem->zName, strlen(pItem->zName));
+ length = width = 0;
+ break;
+ }
+ case etERROR:
+ buf[0] = '%';
+ buf[1] = c;
+ errorflag = 0;
+ idx = 1+(c!=0);
+ (*func)(arg,"%",idx);
+ count += idx;
+ if( c==0 ) fmt--;
+ 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 ){
+ count += nspace;
+ while( nspace>=etSPACESIZE ){
+ (*func)(arg,spaces,etSPACESIZE);
+ nspace -= etSPACESIZE;
+ }
+ if( nspace>0 ) (*func)(arg,spaces,nspace);
+ }
+ }
+ if( length>0 ){
+ (*func)(arg,bufpt,length);
+ count += length;
+ }
+ if( flag_leftjustify ){
+ register int nspace;
+ nspace = width-length;
+ if( nspace>0 ){
+ count += nspace;
+ while( nspace>=etSPACESIZE ){
+ (*func)(arg,spaces,etSPACESIZE);
+ nspace -= etSPACESIZE;
+ }
+ if( nspace>0 ) (*func)(arg,spaces,nspace);
+ }
+ }
+ if( zExtra ){
+ sqliteFree(zExtra);
+ }
+ }/* End for loop over the format string */
+ return errorflag ? -1 : count;
+} /* End of function */
+
+
+/* This structure is used to store state information about the
+** write to memory that is currently in progress.
+*/
+struct sgMprintf {
+ char *zBase; /* A base allocation */
+ char *zText; /* The string collected so far */
+ int nChar; /* Length of the string so far */
+ int nTotal; /* Output size if unconstrained */
+ int nAlloc; /* Amount of space allocated in zText */
+ void *(*xRealloc)(void*,int); /* Function used to realloc memory */
+};
+
+/*
+** This function implements the callback from vxprintf.
+**
+** This routine add nNewChar characters of text in zNewText to
+** the sgMprintf structure pointed to by "arg".
+*/
+static void mout(void *arg, const char *zNewText, int nNewChar){
+ struct sgMprintf *pM = (struct sgMprintf*)arg;
+ pM->nTotal += nNewChar;
+ if( pM->nChar + nNewChar + 1 > pM->nAlloc ){
+ if( pM->xRealloc==0 ){
+ nNewChar = pM->nAlloc - pM->nChar - 1;
+ }else{
+ pM->nAlloc = pM->nChar + nNewChar*2 + 1;
+ if( pM->zText==pM->zBase ){
+ pM->zText = pM->xRealloc(0, pM->nAlloc);
+ if( pM->zText && pM->nChar ){
+ memcpy(pM->zText, pM->zBase, pM->nChar);
+ }
+ }else{
+ pM->zText = pM->xRealloc(pM->zText, pM->nAlloc);
+ }
+ }
+ }
+ if( pM->zText ){
+ if( nNewChar>0 ){
+ memcpy(&pM->zText[pM->nChar], zNewText, nNewChar);
+ pM->nChar += nNewChar;
+ }
+ pM->zText[pM->nChar] = 0;
+ }
+}
+
+/*
+** This routine is a wrapper around xprintf() that invokes mout() as
+** the consumer.
+*/
+static char *base_vprintf(
+ void *(*xRealloc)(void*,int), /* Routine to realloc memory. May be NULL */
+ int useInternal, /* Use internal %-conversions if true */
+ char *zInitBuf, /* Initially write here, before mallocing */
+ int nInitBuf, /* Size of zInitBuf[] */
+ const char *zFormat, /* format string */
+ va_list ap /* arguments */
+){
+ struct sgMprintf sM;
+ sM.zBase = sM.zText = zInitBuf;
+ sM.nChar = sM.nTotal = 0;
+ sM.nAlloc = nInitBuf;
+ sM.xRealloc = xRealloc;
+ vxprintf(mout, &sM, useInternal, zFormat, ap);
+ if( xRealloc ){
+ if( sM.zText==sM.zBase ){
+ sM.zText = xRealloc(0, sM.nChar+1);
+ if( sM.zText ){
+ memcpy(sM.zText, sM.zBase, sM.nChar+1);
+ }
+ }else if( sM.nAlloc>sM.nChar+10 ){
+ sM.zText = xRealloc(sM.zText, sM.nChar+1);
+ }
+ }
+ return sM.zText;
+}
+
+/*
+** Realloc that is a real function, not a macro.
+*/
+static void *printf_realloc(void *old, int size){
+ return sqliteRealloc(old,size);
+}
+
+/*
+** Print into memory obtained from sqliteMalloc(). Use the internal
+** %-conversion extensions.
+*/
+char *sqlite3VMPrintf(const char *zFormat, va_list ap){
+ char zBase[1000];
+ return base_vprintf(printf_realloc, 1, zBase, sizeof(zBase), zFormat, ap);
+}
+
+/*
+** Print into memory obtained from sqliteMalloc(). Use the internal
+** %-conversion extensions.
+*/
+char *sqlite3MPrintf(const char *zFormat, ...){
+ va_list ap;
+ char *z;
+ char zBase[1000];
+ va_start(ap, zFormat);
+ z = base_vprintf(printf_realloc, 1, zBase, sizeof(zBase), zFormat, ap);
+ va_end(ap);
+ return z;
+}
+
+/*
+** Print into memory obtained from malloc(). Do not use the internal
+** %-conversion extensions. This routine is for use by external users.
+*/
+char *sqlite3_mprintf(const char *zFormat, ...){
+ va_list ap;
+ char *z;
+ char zBuf[200];
+
+ va_start(ap,zFormat);
+ z = base_vprintf((void*(*)(void*,int))realloc, 0,
+ zBuf, sizeof(zBuf), zFormat, ap);
+ va_end(ap);
+ return z;
+}
+
+/* This is the varargs version of sqlite3_mprintf.
+*/
+char *sqlite3_vmprintf(const char *zFormat, va_list ap){
+ char zBuf[200];
+ return base_vprintf((void*(*)(void*,int))realloc, 0,
+ zBuf, sizeof(zBuf), zFormat, ap);
+}
+
+/*
+** 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.
+*/
+char *sqlite3_snprintf(int n, char *zBuf, const char *zFormat, ...){
+ char *z;
+ va_list ap;
+
+ va_start(ap,zFormat);
+ z = base_vprintf(0, 0, zBuf, n, zFormat, ap);
+ va_end(ap);
+ return z;
+}
+
+#if defined(SQLITE_TEST) || defined(SQLITE_DEBUG)
+/*
+** 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, ...){
+ extern int getpid(void);
+ va_list ap;
+ char zBuf[500];
+ va_start(ap, zFormat);
+ base_vprintf(0, 0, zBuf, sizeof(zBuf), zFormat, ap);
+ va_end(ap);
+ fprintf(stdout,"%d: %s", getpid(), zBuf);
+ fflush(stdout);
+}
+#endif