#include "sqliteInt.h"

#define etRADIX 0 /* non-decimal integer types. %x %o */

#define etFLOAT 1 /* Floating point. %f */

#define etEXP 2 /* Exponentional notation. %e and %E */

#define etGENERIC 3 /* Floating or exponential, depending on exponent. %g */

#define etSIZE 4 /* Return number of characters processed so far. %n */

#define etSTRING 5 /* Strings. %s */

#define etDYNSTRING 6 /* Dynamically allocated strings. %z */

#define etPERCENT 7 /* Percent symbol. %% */

#define etCHARX 8 /* Characters. %c */

#define etESCAPE_q 9 /* Strings with '\'' doubled. %q */

#define etESCAPE_Q 10 /* Strings with '\'' doubled and enclosed in '',

#define etTOKEN 11 /* a pointer to a Token structure */

#define etSRCITEM 12 /* a pointer to a SrcItem */

#define etPOINTER 13 /* The %p conversion */

#define etESCAPE_w 14 /* %w -> Strings with '\"' doubled */

#define etORDINAL 15 /* %r -> 1st, 2nd, 3rd, 4th, etc. English only */

#define etDECIMAL 16 /* %d or %u, but not %x, %o */

#define etESCAPE_j 17 /* %j -> JSON string literal w/o "..." */

#define etESCAPE_J 18 /* %J -> JSON string literal with "..." */

#define etINVALID 19 /* Any unrecognized conversion type */

typedef unsigned char etByte;

typedef struct et_info { /* Information about each format field */

} et_info;

#define FLAG_SIGNED 1 /* True if the value to convert is signed */

#define FLAG_STRING 4 /* Allow infinite precision */

#if 0 /***** Beginning of script ******/

foreach c {d s g z q Q w c o u x X f e E G i n % p T S r J j} {

scan $c %c x

set n($c) $x

}

set mx [llength [array names n]]

puts "count: $mx"

set mx 25

puts "*********** mx=$mx ************"

for {set r 0} {$r<$mx} {incr r} {

puts -nonewline [format %2d: $r]

foreach c [array names n] {

if {($n($c))%$mx==$r} {puts -nonewline " $c"}

}

puts ""

}

#endif /***** End of script ********/

static const char aDigits[] = "0123456789ABCDEF0123456789abcdef";

static const char aHex[] = "0123456789abcdef";

static const char aPrefix[] = "-x0\000X0";

static const et_info fmtinfo[25] = {

/* 0 */ { 'd', 10, 1, etDECIMAL, 0, 0, 0 },

/* 1 */ { 'e', 0, 1, etEXP, 30, 0, 0 },

/* 2 */ { 'f', 0, 1, etFLOAT, 0, 0, 0 },

/* 3 */ { 'g', 0, 1, etGENERIC, 30, 0, 0 },

/* 4 */ { 'j', 0, 0, etESCAPE_j, 0, 0, 0 }, /* Hash: 6 */

/* 5 */ { 'i', 10, 1, etDECIMAL, 0, 0, 0 },

/* 6 */ { 'Q', 0, 4, etESCAPE_Q, 0, 0, 4 },

/* 7 */ { 'p', 16, 0, etPOINTER, 0, 1, 0 }, /* Hash: 12 */

/* 8 */ { 'S', 0, 0, etSRCITEM, 0, 0, 0 },

/* 9 */ { 'T', 0, 0, etTOKEN, 0, 0, 0 },

/* 10 */ { 'n', 0, 0, etSIZE, 0, 0, 0 },

/* 11 */ { 'o', 8, 0, etRADIX, 0, 2, 0 },

/* 12 */ { '%', 0, 0, etPERCENT, 0, 0, 7 },

/* 13 */ { 'q', 0, 4, etESCAPE_q, 0, 0, 16 },

/* 14 */ { 'r', 10, 1, etORDINAL, 0, 0, 0 },

/* 15 */ { 's', 0, 4, etSTRING, 0, 0, 0 },

/* 16 */ { 'X', 16, 0, etRADIX, 0, 4, 0 }, /* Hash: 13 */

/* 17 */ { 'u', 10, 0, etDECIMAL, 0, 0, 0 },

/* 18 */ { 'w', 0, 4, etESCAPE_w, 0, 0, 0 }, /* Hash: 19 */

/* 19 */ { 'E', 0, 1, etEXP, 14, 0, 18 },

/* 20 */ { 'x', 16, 0, etRADIX, 16, 1, 0 },

/* 21 */ { 'G', 0, 1, etGENERIC, 14, 0, 0 },

/* 22 */ { 'z', 0, 4, etDYNSTRING, 0, 0, 0 },

/* 23 */ { 'J', 0, 0, etESCAPE_J, 0, 0, 0 }, /* Hash: 24 */

/* 24 */ { 'c', 0, 0, etCHARX, 0, 0, 23 }

};

void sqlite3StrAccumSetError(StrAccum *p, u8 eError){

assert( eError==SQLITE_NOMEM || eError==SQLITE_TOOBIG );

p->accError = eError;

if( p->mxAlloc ) sqlite3_str_reset(p);

if( eError==SQLITE_TOOBIG ) sqlite3ErrorToParser(p->db, eError);

}

static sqlite3_int64 getIntArg(PrintfArguments *p){

if( p->nArg<=p->nUsed ) return 0;

return sqlite3_value_int64(p->apArg[p->nUsed++]);

}

static double getDoubleArg(PrintfArguments *p){

if( p->nArg<=p->nUsed ) return 0.0;

return sqlite3_value_double(p->apArg[p->nUsed++]);

}

static char *getTextArg(PrintfArguments *p){

if( p->nArg<=p->nUsed ) return 0;

return (char*)sqlite3_value_text(p->apArg[p->nUsed++]);

}

static char *printfTempBuf(sqlite3_str *pAccum, sqlite3_int64 n){

char *z;

if( pAccum->accError ) return 0;

if( n>pAccum->nAlloc && n>pAccum->mxAlloc ){

sqlite3StrAccumSetError(pAccum, SQLITE_TOOBIG);

return 0;

}

z = sqlite3_malloc(n);

if( z==0 ){

sqlite3StrAccumSetError(pAccum, SQLITE_NOMEM);

}

return z;

}

#ifndef SQLITE_PRINT_BUF_SIZE

# define SQLITE_PRINT_BUF_SIZE 70

#define etBUFSIZE SQLITE_PRINT_BUF_SIZE /* Size of the output buffer */

#ifndef SQLITE_PRINTF_PRECISION_LIMIT

# define SQLITE_FP_PRECISION_LIMIT 100000000

static void sqlite3StrAppend64(sqlite3_str *p, const char *z, i64 N);

static void sqlite3StrAppendchar64(sqlite3_str *p, i64 N, char c);

void sqlite3_str_vappendf(

){

int c; /* Next character in the format string */

char *bufpt; /* Pointer to the conversion buffer */

i64 precision; /* Precision of the current field */

i64 length; /* Length of the field */

int idx; /* A general purpose loop counter */

i64 width; /* Width of the current field */

etByte flag_leftjustify; /* True if "-" flag is present */

etByte flag_prefix; /* '+' or ' ' or 0 for prefix */

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; /* 1 for the "l" flag, 2 for "ll", 0 by default */

etByte done; /* Loop termination flag */

etByte cThousand; /* Thousands separator for %d and %u */

etByte xtype = etINVALID; /* Conversion paradigm */

u8 bArgList; /* True for SQLITE_PRINTF_SQLFUNC */

char prefix; /* Prefix character. "+" or "-" or " " or '\0'. */

sqlite_uint64 longvalue; /* Value for integer types */

double realvalue; /* Value for real types */

const et_info *infop; /* Pointer to the appropriate info structure */

char *zOut; /* Rendering buffer */

int nOut; /* Size of the rendering buffer */

char *zExtra = 0; /* Malloced memory used by some conversion */

int exp, e2; /* exponent of real numbers */

etByte flag_dp; /* True if decimal point should be shown */

etByte flag_rtz; /* True if trailing zeros should be removed */

PrintfArguments *pArgList = 0; /* Arguments for SQLITE_PRINTF_SQLFUNC */

char buf[etBUFSIZE]; /* Conversion buffer */

/* pAccum never starts out with an empty buffer that was obtained from

assert( pAccum->nChar>0 || (pAccum->printfFlags&SQLITE_PRINTF_MALLOCED)==0 );

bufpt = 0;

if( (pAccum->printfFlags & SQLITE_PRINTF_SQLFUNC)!=0 ){

pArgList = va_arg(ap, PrintfArguments*);

bArgList = 1;

}else{

bArgList = 0;

}

for(; (c=(*fmt))!=0; ++fmt){

if( c!='%' ){

bufpt = (char *)fmt;

#if HAVE_STRCHRNUL

fmt = strchrnul(fmt, '%');

fmt = strchr(fmt, '%');

if( fmt==0 ){

fmt = bufpt + strlen(bufpt);

}

sqlite3StrAppend64(pAccum, bufpt, fmt - bufpt);

if( *fmt==0 ) break;

}

if( (c=(*++fmt))==0 ){

sqlite3_str_append(pAccum, "%", 1);

break;

}

/* Find out what flags are present */

flag_leftjustify = flag_prefix = cThousand =

flag_alternateform = flag_altform2 = flag_zeropad = 0;

done = 0;

width = 0;

flag_long = 0;

precision = -1;

do{

switch( c ){

case '-': flag_leftjustify = 1; break;

case '+': flag_prefix = '+'; break;

case ' ': flag_prefix = ' '; break;

case '#': flag_alternateform = 1; break;

case '!': flag_altform2 = 1; break;

case '0': flag_zeropad = 1; break;

case ',': cThousand = ','; break;

default: done = 1; break;

case 'l': {

flag_long = 1;

c = *++fmt;

if( c=='l' ){

c = *++fmt;

flag_long = 2;

}

done = 1;

break;

}

case '1': case '2': case '3': case '4': case '5':

case '6': case '7': case '8': case '9': {

unsigned wx = c - '0';

while( (c = *++fmt)>='0' && c<='9' ){

wx = wx*10 + c - '0';

}

testcase( wx>0x7fffffff );

width = wx & 0x7fffffff;

#ifdef SQLITE_PRINTF_PRECISION_LIMIT

if( width>SQLITE_PRINTF_PRECISION_LIMIT ){

width = SQLITE_PRINTF_PRECISION_LIMIT;

}

if( c!='.' && c!='l' ){

done = 1;

}else{

fmt--;

}

break;

}

case '*': {

if( bArgList ){

width = (int)getIntArg(pArgList);

}else{

width = va_arg(ap,int);

}

if( width<0 ){

flag_leftjustify = 1;

width = width >= -2147483647 ? -width : 0;

}

#ifdef SQLITE_PRINTF_PRECISION_LIMIT

if( width>SQLITE_PRINTF_PRECISION_LIMIT ){

width = SQLITE_PRINTF_PRECISION_LIMIT;

}

if( (c = fmt[1])!='.' && c!='l' ){

c = *++fmt;

done = 1;

}

break;

}

case '.': {

c = *++fmt;

if( c=='*' ){

if( bArgList ){

precision = (int)getIntArg(pArgList);

}else{

precision = va_arg(ap,int);

}

if( precision<0 ){

precision = precision >= -2147483647 ? -precision : -1;

}

c = *++fmt;

}else{

unsigned px = 0;

while( c>='0' && c<='9' ){

px = px*10 + c - '0';

c = *++fmt;

}

testcase( px>0x7fffffff );

precision = px & 0x7fffffff;

}

#ifdef SQLITE_PRINTF_PRECISION_LIMIT

if( precision>SQLITE_PRINTF_PRECISION_LIMIT ){

precision = SQLITE_PRINTF_PRECISION_LIMIT;

}

if( c=='l' ){

--fmt;

}else{

done = 1;

}

break;

}

}

}while( !done && (c=(*++fmt))!=0 );

/* Fetch the info entry for the field */

#ifdef SQLITE_EBCDIC

/* The hash table only works for ASCII. For EBCDIC, we need to do

infop = &fmtinfo[0];

xtype = etINVALID;

for(idx=0; idx<ArraySize(fmtinfo); idx++){

if( c==fmtinfo[idx].fmttype ){

infop = &fmtinfo[idx];

xtype = infop->type;

break;

}

}

/* Fast hash-table lookup */

assert( ArraySize(fmtinfo)==25 );

idx = ((unsigned)c) % 25;

if( fmtinfo[idx].fmttype==c

|| fmtinfo[idx = fmtinfo[idx].iNxt].fmttype==c

){

infop = &fmtinfo[idx];

xtype = infop->type;

}else{

infop = &fmtinfo[0];

xtype = etINVALID;

}

/*

assert( width>=0 );

assert( precision>=(-1) );

switch( xtype ){

case etPOINTER:

flag_long = sizeof(char*)==sizeof(i64) ? 2 :

sizeof(char*)==sizeof(long int) ? 1 : 0;

/* no break */ deliberate_fall_through

case etORDINAL:

case etRADIX:

cThousand = 0;

/* no break */ deliberate_fall_through

case etDECIMAL:

if( infop->flags & FLAG_SIGNED ){

i64 v;

if( bArgList ){

v = getIntArg(pArgList);

}else if( flag_long ){

if( flag_long==2 ){

v = va_arg(ap,i64) ;

}else{

v = va_arg(ap,long int);

}

}else{

v = va_arg(ap,int);

}

if( v<0 ){

testcase( v==SMALLEST_INT64 );

testcase( v==(-1) );

longvalue = ~v;

longvalue++;

prefix = '-';

}else{

longvalue = v;

prefix = flag_prefix;

}

}else{

if( bArgList ){

longvalue = (u64)getIntArg(pArgList);

}else if( flag_long ){

if( flag_long==2 ){

longvalue = va_arg(ap,u64);

}else{

longvalue = va_arg(ap,unsigned long int);

}

}else{

longvalue = va_arg(ap,unsigned int);

}

prefix = 0;

}

#if WHERETRACE_ENABLED

if( xtype==etPOINTER && sqlite3WhereTrace & 0x100000 ) longvalue = 0;

#if TREETRACE_ENABLED

if( xtype==etPOINTER && sqlite3TreeTrace & 0x100000 ) longvalue = 0;

if( longvalue==0 ) flag_alternateform = 0;

if( flag_zeropad && precision<width-(prefix!=0) ){

precision = width-(prefix!=0);

}

if( precision<etBUFSIZE-10-etBUFSIZE/3 ){

nOut = etBUFSIZE;

zOut = buf;

}else{

u64 n;

n = (u64)precision + 10;

if( cThousand ) n += precision/3;

zOut = zExtra = printfTempBuf(pAccum, n);

if( zOut==0 ) return;

nOut = (int)n;

}

bufpt = &zOut[nOut-1];

if( xtype==etORDINAL ){

static const char zOrd[] = "thstndrd";

int x = (int)(longvalue % 10);

if( x>=4 || (longvalue/10)%10==1 ){

x = 0;

}

*(--bufpt) = zOrd[x*2+1];

*(--bufpt) = zOrd[x*2];

}

{

const char *cset = &aDigits[infop->charset];

u8 base = infop->base;

do{ /* Convert to ascii */

*(--bufpt) = cset[longvalue%base];

longvalue = longvalue/base;

}while( longvalue>0 );

}

length = &zOut[nOut-1] - bufpt;

if( precision>length ){ /* zero pad */

i64 nn = precision-length;

bufpt -= nn;

memset(bufpt,'0',nn);

length = precision;

}

if( cThousand ){

i64 nn = (length - 1)/3; /* Number of "," to insert */

i64 ix = (length - 1)%3 + 1;

int ii;

bufpt -= nn;

for(ii=0; nn>0; ii++){

bufpt[ii] = bufpt[ii+nn];

ix--;

if( ix==0 ){

bufpt[++ii] = cThousand;

nn--;

ix = 3;

}

}

}

if( prefix ) *(--bufpt) = prefix; /* Add sign */

if( flag_alternateform && infop->prefix ){ /* Add "0" or "0x" */

const char *pre;

char x;

pre = &aPrefix[infop->prefix];

for(; (x=(*pre))!=0; pre++) *(--bufpt) = x;

}

length = &zOut[nOut-1] - bufpt;

break;

case etFLOAT:

case etEXP:

case etGENERIC: {

FpDecode s;

int iRound;

int j;

i64 szBufNeeded; /* Size needed to hold the output */

if( bArgList ){

realvalue = getDoubleArg(pArgList);

}else{

realvalue = va_arg(ap,double);

}

if( precision<0 ) precision = 6; /* Set default precision */

#ifdef SQLITE_FP_PRECISION_LIMIT

if( precision>SQLITE_FP_PRECISION_LIMIT ){

precision = SQLITE_FP_PRECISION_LIMIT;

}

if( xtype==etFLOAT ){

iRound = -precision;

}else if( xtype==etGENERIC ){

if( precision==0 ) precision = 1;

iRound = precision;

}else{

iRound = precision+1;

}

sqlite3FpDecode(&s, realvalue, iRound, flag_altform2 ? 20 : 16);

if( s.isSpecial ){

if( s.isSpecial==2 ){

if( flag_zeropad ){

bufpt = "null";

length = 4;

}else{

bufpt = "NaN";

length = 3;

}

break;

}else if( flag_zeropad ){

s.z[0] = '9';

s.iDP = 1000;

s.n = 1;

}else{

memcpy(buf, "-Inf", 5);

bufpt = buf;

if( s.sign=='-' ){

/* no-op */

}else if( flag_prefix ){

buf[0] = flag_prefix;

}else{

bufpt++;

}

length = strlen(bufpt);

break;

}

}

if( s.sign=='-' ){

if( flag_alternateform

&& !flag_prefix

&& xtype==etFLOAT

&& s.iDP<=iRound

){

/* Suppress the minus sign if all of the following are true:

prefix = 0;

}else{

prefix = '-';

}

}else{

prefix = flag_prefix;

}

exp = s.iDP-1;

/*

if( xtype==etGENERIC ){

assert( precision>0 );

precision--;

flag_rtz = !flag_alternateform;

if( exp<-4 || exp>precision ){

xtype = etEXP;

}else{

precision = precision - exp;

xtype = etFLOAT;

}

}else{

flag_rtz = flag_altform2;

}

if( xtype==etEXP ){

e2 = 0;

}else{

e2 = s.iDP - 1;

}

szBufNeeded = MAX(e2,0)+(i64)precision+(i64)width+10;

if( cThousand && e2>0 ) szBufNeeded += (e2+2)/3;

if( szBufNeeded + pAccum->nChar >= pAccum->nAlloc ){

if( pAccum->mxAlloc==0 && pAccum->accError==0 ){

/* Unable to allocate space in pAccum, perhaps because it

bufpt = sqlite3_malloc(szBufNeeded);

if( bufpt==0 ){

sqlite3StrAccumSetError(pAccum, SQLITE_NOMEM);

return;

}

zExtra = bufpt;

}else if( sqlite3StrAccumEnlarge(pAccum, szBufNeeded)<szBufNeeded ){

width = length = 0;

break;

}else{

bufpt = pAccum->zText + pAccum->nChar;

}

}else{

bufpt = pAccum->zText + pAccum->nChar;

}

zOut = bufpt;

flag_dp = (precision>0 ?1:0) | flag_alternateform | flag_altform2;

/* The sign in front of the number */

if( prefix ){

*(bufpt++) = prefix;

}

/* Digits prior to the decimal point */

j = 0;

assert( s.n>0 );

if( e2<0 ){

*(bufpt++) = '0';

}else if( cThousand ){

for(; e2>=0; e2--){

*(bufpt++) = j<s.n ? s.z[j++] : '0';

if( (e2%3)==0 && e2>1 ) *(bufpt++) = ',';

}

}else{

j = e2+1;

if( j>s.n ) j = s.n;

memcpy(bufpt, s.z, j);

bufpt += j;

e2 -= j;

if( e2>=0 ){

memset(bufpt, '0', e2+1);

bufpt += e2+1;

e2 = -1;

}

}

/* The decimal point */

if( flag_dp ){

*(bufpt++) = '.';

}

/* "0" digits after the decimal point but before the first

if( e2<(-1) && precision>0 ){

int nn = -1-e2;

if( nn>precision ) nn = precision;

memset(bufpt, '0', nn);

bufpt += nn;

precision -= nn;

}

/* Significant digits after the decimal point */

if( precision>0 ){

int nn = s.n - j;

if( NEVER(nn>precision) ) nn = precision;

if( nn>0 ){

memcpy(bufpt, s.z+j, nn);

bufpt += nn;

precision -= nn;

}

if( precision>0 && !flag_rtz ){

memset(bufpt, '0', precision);

bufpt += precision;

}

}

/* Remove trailing zeros and the "." if no digits follow the "." */

if( flag_rtz && flag_dp ){

while( bufpt[-1]=='0' ) *(--bufpt) = 0;

assert( bufpt>zOut );

if( bufpt[-1]=='.' ){

if( flag_altform2 ){

*(bufpt++) = '0';

}else{

*(--bufpt) = 0;

}

}

}

/* Add the "eNNN" suffix */

if( xtype==etEXP ){

exp = s.iDP - 1;

*(bufpt++) = aDigits[infop->charset];

if( exp<0 ){

*(bufpt++) = '-'; exp = -exp;

}else{

*(bufpt++) = '+';

}

if( exp>=100 ){

*(bufpt++) = (char)((exp/100)+'0'); /* 100's digit */

exp %= 100;

}

*(bufpt++) = (char)(exp/10+'0'); /* 10's digit */

*(bufpt++) = (char)(exp%10+'0'); /* 1's digit */

}

length = bufpt - zOut;

assert( length <= szBufNeeded );

if( length<width ){

i64 nPad = width - length;

if( flag_leftjustify ){

memset(bufpt, ' ', nPad);

}else if( !flag_zeropad ){

memmove(zOut+nPad, zOut, length);

memset(zOut, ' ', nPad);

}else{

int adj = prefix!=0;

memmove(zOut+nPad+adj, zOut+adj, length-adj);

memset(zOut+adj, '0', nPad);

}

length = width;

}

if( zExtra==0 ){

/* The result is being rendered directory into pAccum. This

assert( pAccum->nChar + length < SMXV(pAccum->nChar) );

pAccum->nChar += length;

zOut[length] = 0;

continue;

}else{

/* We were unable to render directly into pAccum because we

bufpt[0] = 0;

bufpt = zExtra;

break;

}

}

case etSIZE:

if( !bArgList ){

*(va_arg(ap,int*)) = pAccum->nChar;

}

length = width = 0;

break;

case etPERCENT:

buf[0] = '%';

bufpt = buf;

length = 1;

break;

case etCHARX:

if( bArgList ){

bufpt = getTextArg(pArgList);

length = 1;

if( bufpt ){

buf[0] = c = *(bufpt++);

if( (c&0xc0)==0xc0 ){

while( length<4 && (bufpt[0]&0xc0)==0x80 ){

buf[length++] = *(bufpt++);

}

}

}else{

buf[0] = 0;

}

}else{

unsigned int ch = va_arg(ap,unsigned int);

length = sqlite3AppendOneUtf8Character(buf, ch);

}

if( precision>1 ){

i64 nPrior = 1;

width -= precision-1;

if( width>1 && !flag_leftjustify ){

sqlite3StrAppendchar64(pAccum, width-1, ' ');

width = 0;

}

sqlite3StrAppend64(pAccum, buf, length);

precision--;

while( precision > 1 ){

i64 nCopyBytes;

if( nPrior > precision-1 ) nPrior = precision - 1;

nCopyBytes = length*nPrior;

if( sqlite3StrAccumEnlargeIfNeeded(pAccum, nCopyBytes) ){

break;

}

sqlite3_str_append(pAccum,

&pAccum->zText[pAccum->nChar-nCopyBytes], nCopyBytes);

precision -= nPrior;

nPrior *= 2;

}

}

bufpt = buf;

flag_altform2 = 1;

goto adjust_width_for_utf8;

case etSTRING:

case etDYNSTRING:

if( bArgList ){

bufpt = getTextArg(pArgList);

xtype = etSTRING;

}else{

bufpt = va_arg(ap,char*);

}

if( bufpt==0 ){

bufpt = "";

}else if( xtype==etDYNSTRING ){

if( pAccum->nChar==0

&& pAccum->mxAlloc

&& width==0

&& precision<0

&& pAccum->accError==0

){

/* Special optimization for sqlite3_mprintf("%z..."):

assert( (pAccum->printfFlags&SQLITE_PRINTF_MALLOCED)==0 );

pAccum->zText = bufpt;

pAccum->nAlloc = sqlite3DbMallocSize(pAccum->db, bufpt);

pAccum->nChar = 0x7fffffff & (int)strlen(bufpt);

pAccum->printfFlags |= SQLITE_PRINTF_MALLOCED;

length = 0;

break;

}

zExtra = bufpt;

}

if( precision>=0 ){

if( flag_altform2 ){

/* Set length to the number of bytes needed in order to display

unsigned char *z = (unsigned char*)bufpt;

while( precision-- > 0 && z[0] ){

SQLITE_SKIP_UTF8(z);

}

length = z - (unsigned char*)bufpt;

}else{

for(length=0; length<precision && bufpt[length]; length++){}

}

}else{

length = strlen(bufpt);

}

adjust_width_for_utf8:

if( flag_altform2 && width>0 ){

/* Adjust width to account for extra bytes in UTF-8 characters */

i64 ii = length - 1;

while( ii>=0 ) if( (bufpt[ii--] & 0xc0)==0x80 ) width++;

}

break;

case etESCAPE_j: /* %j: JSON string literal w/o "..." */

case etESCAPE_J: { /* %J: Generate a JSON string literal */

char *escarg;

i64 i, j, px, iStart;

unsigned char ch;

if( bArgList ){

escarg = getTextArg(pArgList);

}else{

escarg = va_arg(ap,char*);

}

iStart = sqlite3_str_length(pAccum);

if( escarg==0 ){

if( xtype==etESCAPE_J ) sqlite3_str_append(pAccum, "null", 4);

}else{

if( xtype==etESCAPE_J ) sqlite3_str_append(pAccum, "\"", 1);

px = precision;

testcase( px==0 );

if( px<0 ){

px = 0x7fffffff;

}else if( flag_altform2 ){

/* Convert precision from code-points to bytes */

for(i=0; i<px && escarg[i]; i++){

if( (escarg[i]&0xc0)==0x80 ) px++;

}

if( i==px ){

while( (escarg[px]&0xc0)==0x80 ) px++;

}

}

for(i=j=0; i<px; i++){

if( (ch = ((u8*)escarg)[i])<=0x1f || ch=='"' || ch=='\\' ){

if( j<i ) sqlite3StrAppend64(pAccum, &escarg[j], i-j);

j = i+1;

if( ch==0 ) break;

sqlite3_str_appendchar(pAccum, 1, '\\');

if( ch>0x1f ){

sqlite3_str_appendchar(pAccum, 1, ch);

}else if( ((1u<<ch)&0x3700)!=0 ){

ch = "btn?fr"[ch-8];

sqlite3_str_appendchar(pAccum, 1, ch);

}else{

sqlite3_str_append(pAccum, "u00", 3);

sqlite3_str_appendchar(pAccum, 1, aHex[ch>>4]);

sqlite3_str_appendchar(pAccum, 1, aHex[ch&0xf]);

}

}

}

if( j<i ) sqlite3StrAppend64(pAccum, &escarg[j], i-j);

if( xtype==etESCAPE_J ) sqlite3_str_append(pAccum, "\"", 1);

}

if( width>0 && sqlite3_str_errcode(pAccum)==SQLITE_OK ){

sqlite3_int64 n = sqlite3_str_length(pAccum) - iStart;

sqlite3_int64 len = n;

char *zz;

if( flag_altform2 && n>0 ){

zz = sqlite3_str_value(pAccum);

for(i=iStart; zz[i]; i++){

if( (zz[i]&0xc0)==0x80 ) len--;

}

}

if( width>len ){

sqlite3_int64 sp = width-len;

assert( sp>0 && sp<0x7fffffff );

sqlite3StrAppendchar64(pAccum, (int)sp, ' ');

if( !flag_leftjustify

&& n>0

&& sqlite3_str_errcode(pAccum)==0

){

zz = sqlite3_str_value(pAccum);

zz += iStart;

memmove(zz+sp, zz, n);

memset(zz, ' ', sp);

}

}

}

continue;

}

case etESCAPE_q: /* %q: Escape ' characters */

case etESCAPE_Q: /* %Q: Escape ' and enclose in '...' */

case etESCAPE_w: { /* %w: Escape " characters */

i64 i, j, k, n;

int needQuote = 0;

char ch;

char *escarg;

char q;

if( bArgList ){

escarg = getTextArg(pArgList);

}else{

escarg = va_arg(ap,char*);

}

if( escarg==0 ){

escarg = (xtype==etESCAPE_Q ? "NULL" : "(NULL)");

}else if( xtype==etESCAPE_Q ){

needQuote = 1;

}

if( xtype==etESCAPE_w ){

q = '"';

flag_alternateform = 0;

}else{

q = '\'';

}

/* For %q, %Q, and %w, the precision is the number of bytes (or

k = precision;

for(i=n=0; k!=0 && (ch=escarg[i])!=0; i++, k--){

if( ch==q ) n++;

if( flag_altform2 && (ch&0xc0)==0xc0 ){

while( (escarg[i+1]&0xc0)==0x80 ){ i++; }

}

}

if( flag_alternateform ){