diff options
Diffstat (limited to 'chromium/third_party/sqlite/sqlite-src-3240000/src/printf.c')
| -rw-r--r-- | chromium/third_party/sqlite/sqlite-src-3240000/src/printf.c | 1242 |
1 files changed, 0 insertions, 1242 deletions
diff --git a/chromium/third_party/sqlite/sqlite-src-3240000/src/printf.c b/chromium/third_party/sqlite/sqlite-src-3240000/src/printf.c deleted file mode 100644 index 71296ac907f..00000000000 --- a/chromium/third_party/sqlite/sqlite-src-3240000/src/printf.c +++ /dev/null @@ -1,1242 +0,0 @@ -/* -** The "printf" code that follows dates from the 1980's. It is in -** the public domain. -** -************************************************************************** -** -** This file contains code for a set of "printf"-like routines. These -** routines format strings much like the printf() from the standard C -** library, though the implementation here has enhancements to support -** SQLite. -*/ -#include "sqliteInt.h" - -/* -** Conversion types fall into various categories as defined by the -** following enumeration. -*/ -#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 */ -/* The rest are extensions, not normally found in printf() */ -#define etSQLESCAPE 9 /* Strings with '\'' doubled. %q */ -#define etSQLESCAPE2 10 /* Strings with '\'' doubled and enclosed in '', - NULL pointers replaced by SQL NULL. %Q */ -#define etTOKEN 11 /* a pointer to a Token structure */ -#define etSRCLIST 12 /* a pointer to a SrcList */ -#define etPOINTER 13 /* The %p conversion */ -#define etSQLESCAPE3 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 etINVALID 17 /* Any unrecognized conversion type */ - - -/* -** 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_STRING 4 /* Allow infinite 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, etDECIMAL, 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, etDECIMAL, 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, etDECIMAL, 0, 0 }, - { 'n', 0, 0, etSIZE, 0, 0 }, - { '%', 0, 0, etPERCENT, 0, 0 }, - { 'p', 16, 0, etPOINTER, 0, 1 }, - - /* All the rest are undocumented and are for internal use only */ - { 'T', 0, 0, etTOKEN, 0, 0 }, - { 'S', 0, 0, etSRCLIST, 0, 0 }, - { 'r', 10, 1, etORDINAL, 0, 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 char et_getdigit(LONGDOUBLE_TYPE *val, int *cnt){ - int digit; - LONGDOUBLE_TYPE d; - if( (*cnt)<=0 ) return '0'; - (*cnt)--; - digit = (int)*val; - d = digit; - digit += '0'; - *val = (*val - d)*10.0; - return (char)digit; -} -#endif /* SQLITE_OMIT_FLOATING_POINT */ - -/* -** Set the StrAccum object to an error mode. -*/ -static void setStrAccumError(StrAccum *p, u8 eError){ - assert( eError==SQLITE_NOMEM || eError==SQLITE_TOOBIG ); - p->accError = eError; - p->nAlloc = 0; -} - -/* -** Extra argument values from a PrintfArguments object -*/ -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++]); -} - - -/* -** On machines with a small stack size, you can redefine the -** SQLITE_PRINT_BUF_SIZE to be something smaller, if desired. -*/ -#ifndef SQLITE_PRINT_BUF_SIZE -# define SQLITE_PRINT_BUF_SIZE 70 -#endif -#define etBUFSIZE SQLITE_PRINT_BUF_SIZE /* Size of the output buffer */ - -/* -** Render a string given by "fmt" into the StrAccum object. -*/ -void sqlite3_str_vappendf( - sqlite3_str *pAccum, /* Accumulate results here */ - 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_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 */ - LONGDOUBLE_TYPE 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 */ -#ifndef SQLITE_OMIT_FLOATING_POINT - int exp, e2; /* exponent of real numbers */ - int nsd; /* Number of significant digits returned */ - 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 */ -#endif - 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 - ** malloc(). This precondition is required by the mprintf("%z...") - ** optimization. */ - 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, '%'); -#else - do{ fmt++; }while( *fmt && *fmt != '%' ); -#endif - sqlite3_str_append(pAccum, bufpt, (int)(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; - 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; - } - }while( !done && (c=(*++fmt))!=0 ); - /* Get the field width */ - if( c=='*' ){ - if( bArgList ){ - width = (int)getIntArg(pArgList); - }else{ - width = va_arg(ap,int); - } - if( width<0 ){ - flag_leftjustify = 1; - width = width >= -2147483647 ? -width : 0; - } - c = *++fmt; - }else{ - unsigned wx = 0; - while( c>='0' && c<='9' ){ - wx = wx*10 + c - '0'; - c = *++fmt; - } - testcase( wx>0x7fffffff ); - width = wx & 0x7fffffff; - } - assert( width>=0 ); -#ifdef SQLITE_PRINTF_PRECISION_LIMIT - if( width>SQLITE_PRINTF_PRECISION_LIMIT ){ - width = SQLITE_PRINTF_PRECISION_LIMIT; - } -#endif - - /* Get the precision */ - if( c=='.' ){ - c = *++fmt; - if( c=='*' ){ - if( bArgList ){ - precision = (int)getIntArg(pArgList); - }else{ - precision = va_arg(ap,int); - } - c = *++fmt; - if( precision<0 ){ - precision = precision >= -2147483647 ? -precision : -1; - } - }else{ - unsigned px = 0; - while( c>='0' && c<='9' ){ - px = px*10 + c - '0'; - c = *++fmt; - } - testcase( px>0x7fffffff ); - precision = px & 0x7fffffff; - } - }else{ - precision = -1; - } - assert( precision>=(-1) ); -#ifdef SQLITE_PRINTF_PRECISION_LIMIT - if( precision>SQLITE_PRINTF_PRECISION_LIMIT ){ - precision = SQLITE_PRINTF_PRECISION_LIMIT; - } -#endif - - - /* Get the conversion type modifier */ - if( c=='l' ){ - flag_long = 1; - c = *++fmt; - if( c=='l' ){ - flag_long = 2; - c = *++fmt; - } - }else{ - flag_long = 0; - } - /* Fetch the info entry for the field */ - infop = &fmtinfo[0]; - xtype = etINVALID; - for(idx=0; idx<ArraySize(fmtinfo); idx++){ - if( c==fmtinfo[idx].fmttype ){ - infop = &fmtinfo[idx]; - xtype = infop->type; - break; - } - } - - /* - ** At this point, variables are initialized as follows: - ** - ** flag_alternateform TRUE if a '#' is present. - ** flag_altform2 TRUE if a '!' is present. - ** flag_prefix '+' or ' ' or zero - ** 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 1 for "l", 2 for "ll" - ** 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_long = sizeof(char*)==sizeof(i64) ? 2 : - sizeof(char*)==sizeof(long int) ? 1 : 0; - /* Fall through into the next case */ - case etORDINAL: - case etRADIX: - cThousand = 0; - /* Fall through into the next case */ - 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 ){ - if( v==SMALLEST_INT64 ){ - longvalue = ((u64)1)<<63; - }else{ - longvalue = -v; - } - 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( 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 = (u64)precision + 10 + precision/3; - zOut = zExtra = sqlite3Malloc( n ); - if( zOut==0 ){ - setStrAccumError(pAccum, SQLITE_NOMEM); - 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 = (int)(&zOut[nOut-1]-bufpt); - while( precision>length ){ - *(--bufpt) = '0'; /* Zero pad */ - length++; - } - if( cThousand ){ - int nn = (length - 1)/3; /* Number of "," to insert */ - int ix = (length - 1)%3 + 1; - bufpt -= nn; - for(idx=0; nn>0; idx++){ - bufpt[idx] = bufpt[idx+nn]; - ix--; - if( ix==0 ){ - bufpt[++idx] = 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 = (int)(&zOut[nOut-1]-bufpt); - break; - case etFLOAT: - case etEXP: - case etGENERIC: - if( bArgList ){ - realvalue = getDoubleArg(pArgList); - }else{ - realvalue = va_arg(ap,double); - } -#ifdef SQLITE_OMIT_FLOATING_POINT - length = 0; -#else - if( precision<0 ) precision = 6; /* Set default precision */ - if( realvalue<0.0 ){ - realvalue = -realvalue; - prefix = '-'; - }else{ - prefix = flag_prefix; - } - if( xtype==etGENERIC && precision>0 ) precision--; - testcase( precision>0xfff ); - for(idx=precision&0xfff, rounder=0.5; idx>0; idx--, rounder*=0.1){} - if( xtype==etFLOAT ) realvalue += rounder; - /* Normalize realvalue to within 10.0 > realvalue >= 1.0 */ - exp = 0; - if( sqlite3IsNaN((double)realvalue) ){ - bufpt = "NaN"; - length = 3; - break; - } - if( realvalue>0.0 ){ - LONGDOUBLE_TYPE scale = 1.0; - while( realvalue>=1e100*scale && exp<=350 ){ scale *= 1e100;exp+=100;} - while( realvalue>=1e10*scale && exp<=350 ){ scale *= 1e10; exp+=10; } - while( realvalue>=10.0*scale && exp<=350 ){ scale *= 10.0; exp++; } - realvalue /= scale; - while( realvalue<1e-8 ){ realvalue *= 1e8; exp-=8; } - while( realvalue<1.0 ){ realvalue *= 10.0; exp--; } - if( exp>350 ){ - bufpt = buf; - buf[0] = prefix; - memcpy(buf+(prefix!=0),"Inf",4); - length = 3+(prefix!=0); - break; - } - } - bufpt = buf; - /* - ** If the field type is etGENERIC, then convert to either etEXP - ** or etFLOAT, as appropriate. - */ - 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 = flag_altform2; - } - if( xtype==etEXP ){ - e2 = 0; - }else{ - e2 = exp; - } - if( MAX(e2,0)+(i64)precision+(i64)width > etBUFSIZE - 15 ){ - bufpt = zExtra - = sqlite3Malloc( MAX(e2,0)+(i64)precision+(i64)width+15 ); - if( bufpt==0 ){ - setStrAccumError(pAccum, SQLITE_NOMEM); - return; - } - } - zOut = bufpt; - nsd = 16 + flag_altform2*10; - 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 */ - 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--, e2++){ - assert( precision>0 ); - *(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>zOut ); - if( bufpt[-1]=='.' ){ - if( flag_altform2 ){ - *(bufpt++) = '0'; - }else{ - *(--bufpt) = 0; - } - } - } - /* Add the "eNNN" suffix */ - if( xtype==etEXP ){ - *(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 */ - } - *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 = (int)(bufpt-zOut); - bufpt = zOut; - - /* 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 /* !defined(SQLITE_OMIT_FLOATING_POINT) */ - 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); - if( ch<0x00080 ){ - buf[0] = ch & 0xff; - length = 1; - }else if( ch<0x00800 ){ - buf[0] = 0xc0 + (u8)((ch>>6)&0x1f); - buf[1] = 0x80 + (u8)(ch & 0x3f); - length = 2; - }else if( ch<0x10000 ){ - buf[0] = 0xe0 + (u8)((ch>>12)&0x0f); - buf[1] = 0x80 + (u8)((ch>>6) & 0x3f); - buf[2] = 0x80 + (u8)(ch & 0x3f); - length = 3; - }else{ - buf[0] = 0xf0 + (u8)((ch>>18) & 0x07); - buf[1] = 0x80 + (u8)((ch>>12) & 0x3f); - buf[2] = 0x80 + (u8)((ch>>6) & 0x3f); - buf[3] = 0x80 + (u8)(ch & 0x3f); - length = 4; - } - } - if( precision>1 ){ - width -= precision-1; - if( width>1 && !flag_leftjustify ){ - sqlite3_str_appendchar(pAccum, width-1, ' '); - width = 0; - } - while( precision-- > 1 ){ - sqlite3_str_append(pAccum, buf, length); - } - } - 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 ){ - /* Special optimization for sqlite3_mprintf("%z..."): - ** Extend an existing memory allocation rather than creating - ** a new one. */ - 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 - ** precision characters */ - unsigned char *z = (unsigned char*)bufpt; - while( precision-- > 0 && z[0] ){ - SQLITE_SKIP_UTF8(z); - } - length = (int)(z - (unsigned char*)bufpt); - }else{ - for(length=0; length<precision && bufpt[length]; length++){} - } - }else{ - length = 0x7fffffff & (int)strlen(bufpt); - } - adjust_width_for_utf8: - if( flag_altform2 && width>0 ){ - /* Adjust width to account for extra bytes in UTF-8 characters */ - int ii = length - 1; - while( ii>=0 ) if( (bufpt[ii--] & 0xc0)==0x80 ) width++; - } - break; - case etSQLESCAPE: /* %q: Escape ' characters */ - case etSQLESCAPE2: /* %Q: Escape ' and enclose in '...' */ - case etSQLESCAPE3: { /* %w: Escape " characters */ - int i, j, k, n, isnull; - int needQuote; - char ch; - char q = ((xtype==etSQLESCAPE3)?'"':'\''); /* Quote character */ - char *escarg; - - if( bArgList ){ - escarg = getTextArg(pArgList); - }else{ - escarg = va_arg(ap,char*); - } - isnull = escarg==0; - if( isnull ) escarg = (xtype==etSQLESCAPE2 ? "NULL" : "(NULL)"); - /* For %q, %Q, and %w, the precision is the number of byte (or - ** characters if the ! flags is present) to use from the input. - ** Because of the extra quoting characters inserted, the number - ** of output characters may be larger than the precision. - */ - 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++; } - } - } - needQuote = !isnull && xtype==etSQLESCAPE2; - n += i + 3; - if( n>etBUFSIZE ){ - bufpt = zExtra = sqlite3Malloc( n ); - if( bufpt==0 ){ - setStrAccumError(pAccum, SQLITE_NOMEM); - return; - } - }else{ - bufpt = buf; - } - j = 0; - if( needQuote ) bufpt[j++] = q; - k = i; - for(i=0; i<k; i++){ - bufpt[j++] = ch = escarg[i]; - if( ch==q ) bufpt[j++] = ch; - } - if( needQuote ) bufpt[j++] = q; - bufpt[j] = 0; - length = j; - goto adjust_width_for_utf8; - } - case etTOKEN: { - Token *pToken; - if( (pAccum->printfFlags & SQLITE_PRINTF_INTERNAL)==0 ) return; - pToken = va_arg(ap, Token*); - assert( bArgList==0 ); - if( pToken && pToken->n ){ - sqlite3_str_append(pAccum, (const char*)pToken->z, pToken->n); - } - length = width = 0; - break; - } - case etSRCLIST: { - SrcList *pSrc; - int k; - struct SrcList_item *pItem; - if( (pAccum->printfFlags & SQLITE_PRINTF_INTERNAL)==0 ) return; - pSrc = va_arg(ap, SrcList*); - k = va_arg(ap, int); - pItem = &pSrc->a[k]; - assert( bArgList==0 ); - assert( k>=0 && k<pSrc->nSrc ); - if( pItem->zDatabase ){ - sqlite3_str_appendall(pAccum, pItem->zDatabase); - sqlite3_str_append(pAccum, ".", 1); - } - sqlite3_str_appendall(pAccum, pItem->zName); - length = width = 0; - break; - } - default: { - assert( xtype==etINVALID ); - return; - } - }/* 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. Both length and width are in bytes, not characters, - ** at this point. If the "!" flag was present on string conversions - ** indicating that width and precision should be expressed in characters, - ** then the values have been translated prior to reaching this point. - */ - width -= length; - if( width>0 ){ - if( !flag_leftjustify ) sqlite3_str_appendchar(pAccum, width, ' '); - sqlite3_str_append(pAccum, bufpt, length); - if( flag_leftjustify ) sqlite3_str_appendchar(pAccum, width, ' '); - }else{ - sqlite3_str_append(pAccum, bufpt, length); - } - - if( zExtra ){ - sqlite3DbFree(pAccum->db, zExtra); - zExtra = 0; - } - }/* End for loop over the format string */ -} /* End of function */ - -/* -** Enlarge the memory allocation on a StrAccum object so that it is -** able to accept at least N more bytes of text. -** -** Return the number of bytes of text that StrAccum is able to accept -** after the attempted enlargement. The value returned might be zero. -*/ -static int sqlite3StrAccumEnlarge(StrAccum *p, int N){ - char *zNew; - assert( p->nChar+(i64)N >= p->nAlloc ); /* Only called if really needed */ - if( p->accError ){ - testcase(p->accError==SQLITE_TOOBIG); - testcase(p->accError==SQLITE_NOMEM); - return 0; - } - if( p->mxAlloc==0 ){ - N = p->nAlloc - p->nChar - 1; - setStrAccumError(p, SQLITE_TOOBIG); - return N; - }else{ - char *zOld = isMalloced(p) ? p->zText : 0; - i64 szNew = p->nChar; - szNew += N + 1; - if( szNew+p->nChar<=p->mxAlloc ){ - /* Force exponential buffer size growth as long as it does not overflow, - ** to avoid having to call this routine too often */ - szNew += p->nChar; - } - if( szNew > p->mxAlloc ){ - sqlite3_str_reset(p); - setStrAccumError(p, SQLITE_TOOBIG); - return 0; - }else{ - p->nAlloc = (int)szNew; - } - if( p->db ){ - zNew = sqlite3DbRealloc(p->db, zOld, p->nAlloc); - }else{ - zNew = sqlite3_realloc64(zOld, p->nAlloc); - } - if( zNew ){ - assert( p->zText!=0 || p->nChar==0 ); - if( !isMalloced(p) && p->nChar>0 ) memcpy(zNew, p->zText, p->nChar); - p->zText = zNew; - p->nAlloc = sqlite3DbMallocSize(p->db, zNew); - p->printfFlags |= SQLITE_PRINTF_MALLOCED; - }else{ - sqlite3_str_reset(p); - setStrAccumError(p, SQLITE_NOMEM); - return 0; - } - } - return N; -} - -/* -** Append N copies of character c to the given string buffer. -*/ -void sqlite3_str_appendchar(sqlite3_str *p, int N, char c){ - testcase( p->nChar + (i64)N > 0x7fffffff ); - if( p->nChar+(i64)N >= p->nAlloc && (N = sqlite3StrAccumEnlarge(p, N))<=0 ){ - return; - } - while( (N--)>0 ) p->zText[p->nChar++] = c; -} - -/* -** The StrAccum "p" is not large enough to accept N new bytes of z[]. -** So enlarge if first, then do the append. -** -** This is a helper routine to sqlite3_str_append() that does special-case -** work (enlarging the buffer) using tail recursion, so that the -** sqlite3_str_append() routine can use fast calling semantics. -*/ -static void SQLITE_NOINLINE enlargeAndAppend(StrAccum *p, const char *z, int N){ - N = sqlite3StrAccumEnlarge(p, N); - if( N>0 ){ - memcpy(&p->zText[p->nChar], z, N); - p->nChar += N; - } -} - -/* -** Append N bytes of text from z to the StrAccum object. Increase the -** size of the memory allocation for StrAccum if necessary. -*/ -void sqlite3_str_append(sqlite3_str *p, const char *z, int N){ - assert( z!=0 || N==0 ); - assert( p->zText!=0 || p->nChar==0 || p->accError ); - assert( N>=0 ); - assert( p->accError==0 || p->nAlloc==0 ); - if( p->nChar+N >= p->nAlloc ){ - enlargeAndAppend(p,z,N); - }else if( N ){ - assert( p->zText ); - p->nChar += N; - memcpy(&p->zText[p->nChar-N], z, N); - } -} - -/* -** Append the complete text of zero-terminated string z[] to the p string. -*/ -void sqlite3_str_appendall(sqlite3_str *p, const char *z){ - sqlite3_str_append(p, z, sqlite3Strlen30(z)); -} - - -/* -** 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. -*/ -static SQLITE_NOINLINE char *strAccumFinishRealloc(StrAccum *p){ - char *zText; - assert( p->mxAlloc>0 && !isMalloced(p) ); - zText = sqlite3DbMallocRaw(p->db, p->nChar+1 ); - if( zText ){ - memcpy(zText, p->zText, p->nChar+1); - p->printfFlags |= SQLITE_PRINTF_MALLOCED; - }else{ - setStrAccumError(p, SQLITE_NOMEM); - } - p->zText = zText; - return zText; -} -char *sqlite3StrAccumFinish(StrAccum *p){ - if( p->zText ){ - p->zText[p->nChar] = 0; - if( p->mxAlloc>0 && !isMalloced(p) ){ - return strAccumFinishRealloc(p); - } - } - return p->zText; -} - -/* -** This singleton is an sqlite3_str object that is returned if -** sqlite3_malloc() fails to provide space for a real one. This -** sqlite3_str object accepts no new text and always returns -** an SQLITE_NOMEM error. -*/ -static sqlite3_str sqlite3OomStr = { - 0, 0, 0, 0, 0, SQLITE_NOMEM, 0 -}; - -/* Finalize a string created using sqlite3_str_new(). -*/ -char *sqlite3_str_finish(sqlite3_str *p){ - char *z; - if( p!=0 && p!=&sqlite3OomStr ){ - z = sqlite3StrAccumFinish(p); - sqlite3_free(p); - }else{ - z = 0; - } - return z; -} - -/* Return any error code associated with p */ -int sqlite3_str_errcode(sqlite3_str *p){ - return p ? p->accError : SQLITE_NOMEM; -} - -/* Return the current length of p in bytes */ -int sqlite3_str_length(sqlite3_str *p){ - return p ? p->nChar : 0; -} - -/* Return the current value for p */ -char *sqlite3_str_value(sqlite3_str *p){ - if( p==0 || p->nChar==0 ) return 0; - p->zText[p->nChar] = 0; - return p->zText; -} - -/* -** Reset an StrAccum string. Reclaim all malloced memory. -*/ -void sqlite3_str_reset(StrAccum *p){ - if( isMalloced(p) ){ - sqlite3DbFree(p->db, p->zText); - p->printfFlags &= ~SQLITE_PRINTF_MALLOCED; - } - p->nAlloc = 0; - p->nChar = 0; - p->zText = 0; -} - -/* -** Initialize a string accumulator. -** -** p: The accumulator to be initialized. -** db: Pointer to a database connection. May be NULL. Lookaside -** memory is used if not NULL. db->mallocFailed is set appropriately -** when not NULL. -** zBase: An initial buffer. May be NULL in which case the initial buffer -** is malloced. -** n: Size of zBase in bytes. If total space requirements never exceed -** n then no memory allocations ever occur. -** mx: Maximum number of bytes to accumulate. If mx==0 then no memory -** allocations will ever occur. -*/ -void sqlite3StrAccumInit(StrAccum *p, sqlite3 *db, char *zBase, int n, int mx){ - p->zText = zBase; - p->db = db; - p->nAlloc = n; - p->mxAlloc = mx; - p->nChar = 0; - p->accError = 0; - p->printfFlags = 0; -} - -/* Allocate and initialize a new dynamic string object */ -sqlite3_str *sqlite3_str_new(sqlite3 *db){ - sqlite3_str *p = sqlite3_malloc64(sizeof(*p)); - if( p ){ - sqlite3StrAccumInit(p, 0, 0, 0, - db ? db->aLimit[SQLITE_LIMIT_LENGTH] : SQLITE_MAX_LENGTH); - }else{ - p = &sqlite3OomStr; - } - return p; -} - -/* -** 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; - assert( db!=0 ); - sqlite3StrAccumInit(&acc, db, zBase, sizeof(zBase), - db->aLimit[SQLITE_LIMIT_LENGTH]); - acc.printfFlags = SQLITE_PRINTF_INTERNAL; - sqlite3_str_vappendf(&acc, zFormat, ap); - z = sqlite3StrAccumFinish(&acc); - if( acc.accError==SQLITE_NOMEM ){ - sqlite3OomFault(db); - } - 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. -*/ -char *sqlite3_vmprintf(const char *zFormat, va_list ap){ - char *z; - char zBase[SQLITE_PRINT_BUF_SIZE]; - StrAccum acc; - -#ifdef SQLITE_ENABLE_API_ARMOR - if( zFormat==0 ){ - (void)SQLITE_MISUSE_BKPT; - return 0; - } -#endif -#ifndef SQLITE_OMIT_AUTOINIT - if( sqlite3_initialize() ) return 0; -#endif - sqlite3StrAccumInit(&acc, 0, zBase, sizeof(zBase), SQLITE_MAX_LENGTH); - sqlite3_str_vappendf(&acc, zFormat, ap); - z = sqlite3StrAccumFinish(&acc); - return z; -} - -/* -** Print into memory obtained from sqlite3_malloc()(). Omit the internal -** %-conversion extensions. -*/ -char *sqlite3_mprintf(const char *zFormat, ...){ - va_list ap; - char *z; -#ifndef SQLITE_OMIT_AUTOINIT - if( sqlite3_initialize() ) return 0; -#endif - 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. -** -** Oops: The first two arguments of sqlite3_snprintf() are backwards -** from the snprintf() standard. Unfortunately, it is too late to change -** this without breaking compatibility, so we just have to live with the -** mistake. -** -** sqlite3_vsnprintf() is the varargs version. -*/ -char *sqlite3_vsnprintf(int n, char *zBuf, const char *zFormat, va_list ap){ - StrAccum acc; - if( n<=0 ) return zBuf; -#ifdef SQLITE_ENABLE_API_ARMOR - if( zBuf==0 || zFormat==0 ) { - (void)SQLITE_MISUSE_BKPT; - if( zBuf ) zBuf[0] = 0; - return zBuf; - } -#endif - sqlite3StrAccumInit(&acc, 0, zBuf, n, 0); - sqlite3_str_vappendf(&acc, zFormat, ap); - zBuf[acc.nChar] = 0; - return zBuf; -} -char *sqlite3_snprintf(int n, char *zBuf, const char *zFormat, ...){ - char *z; - va_list ap; - va_start(ap,zFormat); - z = sqlite3_vsnprintf(n, zBuf, zFormat, ap); - va_end(ap); - return z; -} - -/* -** This is the routine that actually formats the sqlite3_log() message. -** We house it in a separate routine from sqlite3_log() to avoid using -** stack space on small-stack systems when logging is disabled. -** -** sqlite3_log() must render into a static buffer. It cannot dynamically -** allocate memory because it might be called while the memory allocator -** mutex is held. -** -** sqlite3_str_vappendf() might ask for *temporary* memory allocations for -** certain format characters (%q) or for very large precisions or widths. -** Care must be taken that any sqlite3_log() calls that occur while the -** memory mutex is held do not use these mechanisms. -*/ -static void renderLogMsg(int iErrCode, const char *zFormat, va_list ap){ - StrAccum acc; /* String accumulator */ - char zMsg[SQLITE_PRINT_BUF_SIZE*3]; /* Complete log message */ - - sqlite3StrAccumInit(&acc, 0, zMsg, sizeof(zMsg), 0); - sqlite3_str_vappendf(&acc, zFormat, ap); - sqlite3GlobalConfig.xLog(sqlite3GlobalConfig.pLogArg, iErrCode, - sqlite3StrAccumFinish(&acc)); -} - -/* -** Format and write a message to the log if logging is enabled. -*/ -void sqlite3_log(int iErrCode, const char *zFormat, ...){ - va_list ap; /* Vararg list */ - if( sqlite3GlobalConfig.xLog ){ - va_start(ap, zFormat); - renderLogMsg(iErrCode, zFormat, ap); - va_end(ap); - } -} - -#if defined(SQLITE_DEBUG) || defined(SQLITE_HAVE_OS_TRACE) -/* -** 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, 0, zBuf, sizeof(zBuf), 0); - va_start(ap,zFormat); - sqlite3_str_vappendf(&acc, zFormat, ap); - va_end(ap); - sqlite3StrAccumFinish(&acc); -#ifdef SQLITE_OS_TRACE_PROC - { - extern void SQLITE_OS_TRACE_PROC(const char *zBuf, int nBuf); - SQLITE_OS_TRACE_PROC(zBuf, sizeof(zBuf)); - } -#else - fprintf(stdout,"%s", zBuf); - fflush(stdout); -#endif -} -#endif - - -/* -** variable-argument wrapper around sqlite3_str_vappendf(). The bFlags argument -** can contain the bit SQLITE_PRINTF_INTERNAL enable internal formats. -*/ -void sqlite3_str_appendf(StrAccum *p, const char *zFormat, ...){ - va_list ap; - va_start(ap,zFormat); - sqlite3_str_vappendf(p, zFormat, ap); - va_end(ap); -} |