mirror of
https://github.com/php/php-src.git
synced 2025-08-20 01:14:28 +02:00
Bundle relevant parts of sqlite 2.8.0.
# sqlite has a completely non-restrictive license
This commit is contained in:
Wez Furlong
parent
826583dc91
commit
05d5a35c9b
36 changed files with 38179 additions and 0 deletions
824
ext/sqlite/libsqlite/src/printf.c
Normal file
824
ext/sqlite/libsqlite/src/printf.c
Normal file
|
|
@ -0,0 +1,824 @@
|
|||
/*
|
||||
** 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 They are slightly out-of-date.
|
||||
**
|
||||
** 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"
|
||||
|
||||
/*
|
||||
** Undefine COMPATIBILITY to make some slight changes in the way things
|
||||
** work. I think the changes are an improvement, but they are not
|
||||
** backwards compatible.
|
||||
*/
|
||||
/* #define COMPATIBILITY / * Compatible with SUN OS 4.1 */
|
||||
|
||||
/*
|
||||
** Conversion types fall into various categories as defined by the
|
||||
** following enumeration.
|
||||
*/
|
||||
enum et_type { /* The type of the format field */
|
||||
etRADIX, /* Integer types. %d, %x, %o, and so forth */
|
||||
etFLOAT, /* Floating point. %f */
|
||||
etEXP, /* Exponentional notation. %e and %E */
|
||||
etGENERIC, /* Floating or exponential, depending on exponent. %g */
|
||||
etSIZE, /* Return number of characters processed so far. %n */
|
||||
etSTRING, /* Strings. %s */
|
||||
etPERCENT, /* Percent symbol. %% */
|
||||
etCHARX, /* Characters. %c */
|
||||
etERROR, /* Used to indicate no such conversion type */
|
||||
/* The rest are extensions, not normally found in printf() */
|
||||
etCHARLIT, /* Literal characters. %' */
|
||||
etSQLESCAPE, /* Strings with '\'' doubled. %q */
|
||||
etSQLESCAPE2, /* Strings with '\'' doubled and enclosed in '',
|
||||
NULL pointers replaced by SQL NULL. %Q */
|
||||
etORDINAL /* 1st, 2nd, 3rd and so forth */
|
||||
};
|
||||
|
||||
/*
|
||||
** 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 */
|
||||
int fmttype; /* The format field code letter */
|
||||
int base; /* The base for radix conversion */
|
||||
char *charset; /* The character set for conversion */
|
||||
int flag_signed; /* Is the quantity signed? */
|
||||
char *prefix; /* Prefix on non-zero values in alt format */
|
||||
enum et_type type; /* Conversion paradigm */
|
||||
} et_info;
|
||||
|
||||
/*
|
||||
** The following table is searched linearly, so it is good to put the
|
||||
** most frequently used conversion types first.
|
||||
*/
|
||||
static et_info fmtinfo[] = {
|
||||
{ 'd', 10, "0123456789", 1, 0, etRADIX, },
|
||||
{ 's', 0, 0, 0, 0, etSTRING, },
|
||||
{ 'q', 0, 0, 0, 0, etSQLESCAPE, },
|
||||
{ 'Q', 0, 0, 0, 0, etSQLESCAPE2, },
|
||||
{ 'c', 0, 0, 0, 0, etCHARX, },
|
||||
{ 'o', 8, "01234567", 0, "0", etRADIX, },
|
||||
{ 'u', 10, "0123456789", 0, 0, etRADIX, },
|
||||
{ 'x', 16, "0123456789abcdef", 0, "x0", etRADIX, },
|
||||
{ 'X', 16, "0123456789ABCDEF", 0, "X0", etRADIX, },
|
||||
{ 'r', 10, "0123456789", 0, 0, etORDINAL, },
|
||||
{ 'f', 0, 0, 1, 0, etFLOAT, },
|
||||
{ 'e', 0, "e", 1, 0, etEXP, },
|
||||
{ 'E', 0, "E", 1, 0, etEXP, },
|
||||
{ 'g', 0, "e", 1, 0, etGENERIC, },
|
||||
{ 'G', 0, "E", 1, 0, etGENERIC, },
|
||||
{ 'i', 10, "0123456789", 1, 0, etRADIX, },
|
||||
{ 'n', 0, 0, 0, 0, etSIZE, },
|
||||
{ '%', 0, 0, 0, 0, etPERCENT, },
|
||||
{ 'b', 2, "01", 0, "b0", etRADIX, }, /* Binary */
|
||||
{ 'p', 10, "0123456789", 0, 0, etRADIX, }, /* Pointers */
|
||||
{ '\'', 0, 0, 0, 0, etCHARLIT, }, /* Literal char */
|
||||
};
|
||||
#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(double *val, int *cnt){
|
||||
int digit;
|
||||
double 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*,char*,int),
|
||||
void *arg,
|
||||
const char *format,
|
||||
va_list ap
|
||||
){
|
||||
register const char *fmt; /* The format string. */
|
||||
register int c; /* Next character in the format string */
|
||||
register char *bufpt; /* Pointer to the conversion buffer */
|
||||
register int precision; /* Precision of the current field */
|
||||
register int length; /* Length of the field */
|
||||
register int idx; /* A general purpose loop counter */
|
||||
int count; /* Total number of characters output */
|
||||
int width; /* Width of the current field */
|
||||
int flag_leftjustify; /* True if "-" flag is present */
|
||||
int flag_plussign; /* True if "+" flag is present */
|
||||
int flag_blanksign; /* True if " " flag is present */
|
||||
int flag_alternateform; /* True if "#" flag is present */
|
||||
int flag_zeropad; /* True if field width constant starts with zero */
|
||||
int flag_long; /* True if "l" flag is present */
|
||||
int flag_center; /* True if "=" flag is present */
|
||||
unsigned long longvalue; /* Value for integer types */
|
||||
double realvalue; /* Value for real types */
|
||||
et_info *infop; /* Pointer to the appropriate info structure */
|
||||
char buf[etBUFSIZE]; /* Conversion buffer */
|
||||
char prefix; /* Prefix character. "+" or "-" or " " or '\0'. */
|
||||
int errorflag = 0; /* True if an error is encountered */
|
||||
enum et_type xtype; /* Conversion paradigm */
|
||||
char *zExtra; /* Extra memory used for etTCLESCAPE conversions */
|
||||
static char spaces[] = " "
|
||||
" ";
|
||||
#define etSPACESIZE (sizeof(spaces)-1)
|
||||
#ifndef etNOFLOATINGPOINT
|
||||
int exp; /* exponent of real numbers */
|
||||
double rounder; /* Used for rounding floating point values */
|
||||
int flag_dp; /* True if decimal point should be shown */
|
||||
int flag_rtz; /* True if trailing zeros should be removed */
|
||||
int flag_exp; /* True to force display of the exponent */
|
||||
int nsd; /* Number of significant digits returned */
|
||||
#endif
|
||||
|
||||
fmt = format; /* Put in a register for speed */
|
||||
count = length = 0;
|
||||
bufpt = 0;
|
||||
for(; (c=(*fmt))!=0; ++fmt){
|
||||
if( c!='%' ){
|
||||
register 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 = flag_center = 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;
|
||||
case '=': flag_center = 1; c = 0; break;
|
||||
default: break;
|
||||
}
|
||||
}while( c==0 && (c=(*++fmt))!=0 );
|
||||
if( flag_center ) flag_leftjustify = 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);
|
||||
#ifndef etCOMPATIBILITY
|
||||
/* This is sensible, but SUN OS 4.1 doesn't do it. */
|
||||
if( precision<0 ) precision = -precision;
|
||||
#endif
|
||||
c = *++fmt;
|
||||
}else{
|
||||
while( c>='0' && c<='9' ){
|
||||
precision = precision*10 + c - '0';
|
||||
c = *++fmt;
|
||||
}
|
||||
}
|
||||
/* Limit the precision to prevent overflowing buf[] during conversion */
|
||||
if( precision>etBUFSIZE-40 ) precision = etBUFSIZE-40;
|
||||
}else{
|
||||
precision = -1;
|
||||
}
|
||||
/* Get the conversion type modifier */
|
||||
if( c=='l' ){
|
||||
flag_long = 1;
|
||||
c = *++fmt;
|
||||
}else{
|
||||
flag_long = 0;
|
||||
}
|
||||
/* Fetch the info entry for the field */
|
||||
infop = 0;
|
||||
for(idx=0; idx<etNINFO; idx++){
|
||||
if( c==fmtinfo[idx].fmttype ){
|
||||
infop = &fmtinfo[idx];
|
||||
break;
|
||||
}
|
||||
}
|
||||
/* No info entry found. It must be an error. */
|
||||
if( infop==0 ){
|
||||
xtype = etERROR;
|
||||
}else{
|
||||
xtype = infop->type;
|
||||
}
|
||||
zExtra = 0;
|
||||
|
||||
/*
|
||||
** 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_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 etORDINAL:
|
||||
case etRADIX:
|
||||
if( flag_long ) longvalue = va_arg(ap,long);
|
||||
else longvalue = va_arg(ap,int);
|
||||
#ifdef etCOMPATIBILITY
|
||||
/* For the format %#x, the value zero is printed "0" not "0x0".
|
||||
** I think this is stupid. */
|
||||
if( longvalue==0 ) flag_alternateform = 0;
|
||||
#else
|
||||
/* More sensible: turn off the prefix for octal (to prevent "00"),
|
||||
** but leave the prefix for hex. */
|
||||
if( longvalue==0 && infop->base==8 ) flag_alternateform = 0;
|
||||
#endif
|
||||
if( infop->flag_signed ){
|
||||
if( *(long*)&longvalue<0 ){
|
||||
longvalue = -*(long*)&longvalue;
|
||||
prefix = '-';
|
||||
}else if( flag_plussign ) prefix = '+';
|
||||
else if( flag_blanksign ) prefix = ' ';
|
||||
else prefix = 0;
|
||||
}else prefix = 0;
|
||||
if( flag_zeropad && precision<width-(prefix!=0) ){
|
||||
precision = width-(prefix!=0);
|
||||
}
|
||||
bufpt = &buf[etBUFSIZE];
|
||||
if( xtype==etORDINAL ){
|
||||
long a,b;
|
||||
a = longvalue%10;
|
||||
b = longvalue%100;
|
||||
bufpt -= 2;
|
||||
if( a==0 || a>3 || (b>10 && b<14) ){
|
||||
bufpt[0] = 't';
|
||||
bufpt[1] = 'h';
|
||||
}else if( a==1 ){
|
||||
bufpt[0] = 's';
|
||||
bufpt[1] = 't';
|
||||
}else if( a==2 ){
|
||||
bufpt[0] = 'n';
|
||||
bufpt[1] = 'd';
|
||||
}else if( a==3 ){
|
||||
bufpt[0] = 'r';
|
||||
bufpt[1] = 'd';
|
||||
}
|
||||
}
|
||||
{
|
||||
register char *cset; /* Use registers for speed */
|
||||
register int base;
|
||||
cset = infop->charset;
|
||||
base = infop->base;
|
||||
do{ /* Convert to ascii */
|
||||
*(--bufpt) = cset[longvalue%base];
|
||||
longvalue = longvalue/base;
|
||||
}while( longvalue>0 );
|
||||
}
|
||||
length = (long)&buf[etBUFSIZE]-(long)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" */
|
||||
char *pre, x;
|
||||
pre = infop->prefix;
|
||||
if( *bufpt!=pre[0] ){
|
||||
for(pre=infop->prefix; (x=(*pre))!=0; pre++) *(--bufpt) = x;
|
||||
}
|
||||
}
|
||||
length = (long)&buf[etBUFSIZE]-(long)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;
|
||||
#ifdef COMPATIBILITY
|
||||
/* 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 ){
|
||||
int k = 0;
|
||||
while( realvalue>=1e8 && k++<100 ){ realvalue *= 1e-8; exp+=8; }
|
||||
while( realvalue>=10.0 && k++<100 ){ realvalue *= 0.1; exp++; }
|
||||
while( realvalue<1e-8 && k++<100 ){ realvalue *= 1e8; exp-=8; }
|
||||
while( realvalue<1.0 && k++<100 ){ realvalue *= 10.0; exp--; }
|
||||
if( k>=100 ){
|
||||
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++) = infop->charset[0];
|
||||
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 = (long)bufpt-(long)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:
|
||||
bufpt = va_arg(ap,char*);
|
||||
if( bufpt==0 ) bufpt = "(null)";
|
||||
length = strlen(bufpt);
|
||||
if( precision>=0 && precision<length ) length = precision;
|
||||
break;
|
||||
case etSQLESCAPE:
|
||||
case etSQLESCAPE2:
|
||||
{
|
||||
int i, j, n, c, isnull;
|
||||
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++;
|
||||
}
|
||||
n += i + 1 + ((!isnull && xtype==etSQLESCAPE2) ? 2 : 0);
|
||||
if( n>etBUFSIZE ){
|
||||
bufpt = zExtra = sqliteMalloc( n );
|
||||
if( bufpt==0 ) return -1;
|
||||
}else{
|
||||
bufpt = buf;
|
||||
}
|
||||
j = 0;
|
||||
if( !isnull && xtype==etSQLESCAPE2 ) bufpt[j++] = '\'';
|
||||
for(i=0; (c=arg[i])!=0; i++){
|
||||
bufpt[j++] = c;
|
||||
if( c=='\'' ) bufpt[j++] = c;
|
||||
}
|
||||
if( !isnull && xtype==etSQLESCAPE2 ) bufpt[j++] = '\'';
|
||||
bufpt[j] = 0;
|
||||
length = j;
|
||||
if( precision>=0 && precision<length ) length = precision;
|
||||
}
|
||||
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 ){
|
||||
if( flag_center ){
|
||||
nspace = nspace/2;
|
||||
width -= nspace;
|
||||
flag_leftjustify = 1;
|
||||
}
|
||||
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 nAlloc; /* Amount of space allocated in zText */
|
||||
};
|
||||
|
||||
/*
|
||||
** 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, char *zNewText, int nNewChar){
|
||||
struct sgMprintf *pM = (struct sgMprintf*)arg;
|
||||
if( pM->nChar + nNewChar + 1 > pM->nAlloc ){
|
||||
pM->nAlloc = pM->nChar + nNewChar*2 + 1;
|
||||
if( pM->zText==pM->zBase ){
|
||||
pM->zText = sqliteMalloc(pM->nAlloc);
|
||||
if( pM->zText && pM->nChar ) memcpy(pM->zText,pM->zBase,pM->nChar);
|
||||
}else{
|
||||
char *z = sqliteRealloc(pM->zText, pM->nAlloc);
|
||||
if( z==0 ){
|
||||
sqliteFree(pM->zText);
|
||||
pM->nChar = 0;
|
||||
pM->nAlloc = 0;
|
||||
}
|
||||
pM->zText = z;
|
||||
}
|
||||
}
|
||||
if( pM->zText ){
|
||||
memcpy(&pM->zText[pM->nChar], zNewText, nNewChar);
|
||||
pM->nChar += nNewChar;
|
||||
pM->zText[pM->nChar] = 0;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
** sqlite_mprintf() works like printf(), but allocations memory to hold the
|
||||
** resulting string and returns a pointer to the allocated memory. Use
|
||||
** sqliteFree() to release the memory allocated.
|
||||
*/
|
||||
char *sqliteMPrintf(const char *zFormat, ...){
|
||||
va_list ap;
|
||||
struct sgMprintf sMprintf;
|
||||
char *zNew;
|
||||
char zBuf[200];
|
||||
|
||||
sMprintf.nChar = 0;
|
||||
sMprintf.nAlloc = sizeof(zBuf);
|
||||
sMprintf.zText = zBuf;
|
||||
sMprintf.zBase = zBuf;
|
||||
va_start(ap,zFormat);
|
||||
vxprintf(mout,&sMprintf,zFormat,ap);
|
||||
va_end(ap);
|
||||
sMprintf.zText[sMprintf.nChar] = 0;
|
||||
return sqliteRealloc(sMprintf.zText, sMprintf.nChar+1);
|
||||
}
|
||||
|
||||
/*
|
||||
** sqlite_mprintf() works like printf(), but allocations memory to hold the
|
||||
** resulting string and returns a pointer to the allocated memory. Use
|
||||
** sqliteFree() to release the memory allocated.
|
||||
*/
|
||||
char *sqlite_mprintf(const char *zFormat, ...){
|
||||
va_list ap;
|
||||
struct sgMprintf sMprintf;
|
||||
char *zNew;
|
||||
char zBuf[200];
|
||||
|
||||
sMprintf.nChar = 0;
|
||||
sMprintf.nAlloc = sizeof(zBuf);
|
||||
sMprintf.zText = zBuf;
|
||||
sMprintf.zBase = zBuf;
|
||||
va_start(ap,zFormat);
|
||||
vxprintf(mout,&sMprintf,zFormat,ap);
|
||||
va_end(ap);
|
||||
sMprintf.zText[sMprintf.nChar] = 0;
|
||||
zNew = malloc( sMprintf.nChar+1 );
|
||||
if( zNew ) strcpy(zNew,sMprintf.zText);
|
||||
if( sMprintf.zText!=sMprintf.zBase ){
|
||||
sqliteFree(sMprintf.zText);
|
||||
}
|
||||
return zNew;
|
||||
}
|
||||
|
||||
/* This is the varargs version of sqlite_mprintf.
|
||||
*/
|
||||
char *sqlite_vmprintf(const char *zFormat, va_list ap){
|
||||
struct sgMprintf sMprintf;
|
||||
char *zNew;
|
||||
char zBuf[200];
|
||||
sMprintf.nChar = 0;
|
||||
sMprintf.zText = zBuf;
|
||||
sMprintf.nAlloc = sizeof(zBuf);
|
||||
sMprintf.zBase = zBuf;
|
||||
vxprintf(mout,&sMprintf,zFormat,ap);
|
||||
sMprintf.zText[sMprintf.nChar] = 0;
|
||||
zNew = malloc( sMprintf.nChar+1 );
|
||||
if( zNew ) strcpy(zNew,sMprintf.zText);
|
||||
if( sMprintf.zText!=sMprintf.zBase ){
|
||||
sqliteFree(sMprintf.zText);
|
||||
}
|
||||
return zNew;
|
||||
}
|
||||
|
||||
/*
|
||||
** The following four routines implement the varargs versions of the
|
||||
** sqlite_exec() and sqlite_get_table() interfaces. See the sqlite.h
|
||||
** header files for a more detailed description of how these interfaces
|
||||
** work.
|
||||
**
|
||||
** These routines are all just simple wrappers.
|
||||
*/
|
||||
int sqlite_exec_printf(
|
||||
sqlite *db, /* An open database */
|
||||
const char *sqlFormat, /* printf-style format string for the SQL */
|
||||
sqlite_callback xCallback, /* Callback function */
|
||||
void *pArg, /* 1st argument to callback function */
|
||||
char **errmsg, /* Error msg written here */
|
||||
... /* Arguments to the format string. */
|
||||
){
|
||||
va_list ap;
|
||||
int rc;
|
||||
|
||||
va_start(ap, errmsg);
|
||||
rc = sqlite_exec_vprintf(db, sqlFormat, xCallback, pArg, errmsg, ap);
|
||||
va_end(ap);
|
||||
return rc;
|
||||
}
|
||||
int sqlite_exec_vprintf(
|
||||
sqlite *db, /* An open database */
|
||||
const char *sqlFormat, /* printf-style format string for the SQL */
|
||||
sqlite_callback xCallback, /* Callback function */
|
||||
void *pArg, /* 1st argument to callback function */
|
||||
char **errmsg, /* Error msg written here */
|
||||
va_list ap /* Arguments to the format string. */
|
||||
){
|
||||
char *zSql;
|
||||
int rc;
|
||||
|
||||
zSql = sqlite_vmprintf(sqlFormat, ap);
|
||||
rc = sqlite_exec(db, zSql, xCallback, pArg, errmsg);
|
||||
free(zSql);
|
||||
return rc;
|
||||
}
|
||||
int sqlite_get_table_printf(
|
||||
sqlite *db, /* An open database */
|
||||
const char *sqlFormat, /* printf-style format string for the SQL */
|
||||
char ***resultp, /* Result written to a char *[] that this points to */
|
||||
int *nrow, /* Number of result rows written here */
|
||||
int *ncol, /* Number of result columns written here */
|
||||
char **errmsg, /* Error msg written here */
|
||||
... /* Arguments to the format string */
|
||||
){
|
||||
va_list ap;
|
||||
int rc;
|
||||
|
||||
va_start(ap, errmsg);
|
||||
rc = sqlite_get_table_vprintf(db, sqlFormat, resultp, nrow, ncol, errmsg, ap);
|
||||
va_end(ap);
|
||||
return rc;
|
||||
}
|
||||
int sqlite_get_table_vprintf(
|
||||
sqlite *db, /* An open database */
|
||||
const char *sqlFormat, /* printf-style format string for the SQL */
|
||||
char ***resultp, /* Result written to a char *[] that this points to */
|
||||
int *nrow, /* Number of result rows written here */
|
||||
int *ncolumn, /* Number of result columns written here */
|
||||
char **errmsg, /* Error msg written here */
|
||||
va_list ap /* Arguments to the format string */
|
||||
){
|
||||
char *zSql;
|
||||
int rc;
|
||||
|
||||
zSql = sqlite_vmprintf(sqlFormat, ap);
|
||||
rc = sqlite_get_table(db, zSql, resultp, nrow, ncolumn, errmsg);
|
||||
free(zSql);
|
||||
return rc;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue