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upstream 3.7.9

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This commit is contained in:
Stephen Lombardo
2011-12-26 14:52:17 -05:00
parent 12069ec913
commit ddb595fbc9
329 changed files with 14622 additions and 8785 deletions
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src/printf.c
+46 -105
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@@ -7,48 +7,10 @@
**
**************************************************************************
**
** 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.
**
** 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
** SQLlite.
*/
#include "sqliteInt.h"
@@ -187,43 +149,15 @@ static void appendSpace(StrAccum *pAccum, int N){
/*
** On machines with a small stack size, you can redefine the
** SQLITE_PRINT_BUF_SIZE to be less than 350.
** SQLITE_PRINT_BUF_SIZE to be something smaller, if desired.
*/
#ifndef SQLITE_PRINT_BUF_SIZE
# if defined(SQLITE_SMALL_STACK)
# define SQLITE_PRINT_BUF_SIZE 50
# else
# define SQLITE_PRINT_BUF_SIZE 350
# endif
# define SQLITE_PRINT_BUF_SIZE 70
#endif
#define etBUFSIZE SQLITE_PRINT_BUF_SIZE /* Size of the output buffer */
/*
** The root program. All variations call this core.
**
** INPUTS:
** func This is a pointer to a function taking three arguments
** 1. A pointer to anything. Same as the "arg" parameter.
** 2. A pointer to the list of characters to be output
** (Note, this list is NOT null terminated.)
** 3. An integer number of characters to be output.
** (Note: This number might be zero.)
**
** arg This is the pointer to anything which will be passed as the
** first argument to "func". Use it for whatever you like.
**
** fmt This is the format string, as in the usual print.
**
** ap This is a pointer to a list of arguments. Same as in
** vfprint.
**
** OUTPUTS:
** The return value is the total number of characters sent to
** the function "func". Returns -1 on a error.
**
** Note that the order in which automatic variables are declared below
** seems to make a big difference in determining how fast this beast
** will run.
** Render a string given by "fmt" into the StrAccum object.
*/
void sqlite3VXPrintf(
StrAccum *pAccum, /* Accumulate results here */
@@ -246,23 +180,23 @@ void sqlite3VXPrintf(
etByte flag_long; /* True if "l" flag is present */
etByte flag_longlong; /* True if the "ll" flag is present */
etByte done; /* Loop termination flag */
etByte xtype = 0; /* Conversion paradigm */
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 buf[etBUFSIZE]; /* Conversion buffer */
char prefix; /* Prefix character. "+" or "-" or " " or '\0'. */
etByte xtype = 0; /* Conversion paradigm */
char *zExtra; /* Extra memory used for etTCLESCAPE conversions */
char *zOut; /* Rendering buffer */
int nOut; /* Size of the rendering buffer */
char *zExtra; /* 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 */
etByte flag_exp; /* True to force display of the exponent */
int nsd; /* Number of significant digits returned */
#endif
char buf[etBUFSIZE]; /* Conversion buffer */
length = 0;
bufpt = 0;
for(; (c=(*fmt))!=0; ++fmt){
if( c!='%' ){
@@ -307,9 +241,6 @@ void sqlite3VXPrintf(
c = *++fmt;
}
}
if( width > etBUFSIZE-10 ){
width = etBUFSIZE-10;
}
/* Get the precision */
if( c=='.' ){
precision = 0;
@@ -356,12 +287,6 @@ void sqlite3VXPrintf(
}
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:
**
@@ -426,16 +351,26 @@ void sqlite3VXPrintf(
if( flag_zeropad && precision<width-(prefix!=0) ){
precision = width-(prefix!=0);
}
bufpt = &buf[etBUFSIZE-1];
if( precision<etBUFSIZE-10 ){
nOut = etBUFSIZE;
zOut = buf;
}else{
nOut = precision + 10;
zOut = zExtra = sqlite3Malloc( nOut );
if( zOut==0 ){
pAccum->mallocFailed = 1;
return;
}
}
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;
}
buf[etBUFSIZE-3] = zOrd[x*2];
buf[etBUFSIZE-2] = zOrd[x*2+1];
bufpt -= 2;
*(--bufpt) = zOrd[x*2+1];
*(--bufpt) = zOrd[x*2];
}
{
register const char *cset; /* Use registers for speed */
@@ -447,7 +382,7 @@ void sqlite3VXPrintf(
longvalue = longvalue/base;
}while( longvalue>0 );
}
length = (int)(&buf[etBUFSIZE-1]-bufpt);
length = (int)(&zOut[nOut-1]-bufpt);
for(idx=precision-length; idx>0; idx--){
*(--bufpt) = '0'; /* Zero pad */
}
@@ -458,7 +393,7 @@ void sqlite3VXPrintf(
pre = &aPrefix[infop->prefix];
for(; (x=(*pre))!=0; pre++) *(--bufpt) = x;
}
length = (int)(&buf[etBUFSIZE-1]-bufpt);
length = (int)(&zOut[nOut-1]-bufpt);
break;
case etFLOAT:
case etEXP:
@@ -468,7 +403,6 @@ void sqlite3VXPrintf(
length = 0;
#else
if( precision<0 ) precision = 6; /* Set default precision */
if( precision>etBUFSIZE/2-10 ) precision = etBUFSIZE/2-10;
if( realvalue<0.0 ){
realvalue = -realvalue;
prefix = '-';
@@ -516,7 +450,6 @@ void sqlite3VXPrintf(
** 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++; }
@@ -537,6 +470,14 @@ void sqlite3VXPrintf(
}else{
e2 = exp;
}
if( e2+precision+width > etBUFSIZE - 15 ){
bufpt = zExtra = sqlite3Malloc( e2+precision+width+15 );
if( bufpt==0 ){
pAccum->mallocFailed = 1;
return;
}
}
zOut = bufpt;
nsd = 0;
flag_dp = (precision>0 ?1:0) | flag_alternateform | flag_altform2;
/* The sign in front of the number */
@@ -568,7 +509,7 @@ void sqlite3VXPrintf(
/* Remove trailing zeros and the "." if no digits follow the "." */
if( flag_rtz && flag_dp ){
while( bufpt[-1]=='0' ) *(--bufpt) = 0;
assert( bufpt>buf );
assert( bufpt>zOut );
if( bufpt[-1]=='.' ){
if( flag_altform2 ){
*(bufpt++) = '0';
@@ -578,7 +519,7 @@ void sqlite3VXPrintf(
}
}
/* Add the "eNNN" suffix */
if( flag_exp || xtype==etEXP ){
if( xtype==etEXP ){
*(bufpt++) = aDigits[infop->charset];
if( exp<0 ){
*(bufpt++) = '-'; exp = -exp;
@@ -597,8 +538,8 @@ void sqlite3VXPrintf(
/* 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-buf);
bufpt = buf;
length = (int)(bufpt-zOut);
bufpt = zOut;
/* Special case: Add leading zeros if the flag_zeropad flag is
** set and we are not left justified */
@@ -736,9 +677,7 @@ void sqlite3VXPrintf(
appendSpace(pAccum, nspace);
}
}
if( zExtra ){
sqlite3_free(zExtra);
}
sqlite3_free(zExtra);
}/* End for loop over the format string */
} /* End of function */
@@ -752,6 +691,7 @@ void sqlite3StrAccumAppend(StrAccum *p, const char *z, int N){
testcase(p->mallocFailed);
return;
}
assert( p->zText!=0 || p->nChar==0 );
if( N<0 ){
N = sqlite3Strlen30(z);
}
@@ -783,7 +723,7 @@ void sqlite3StrAccumAppend(StrAccum *p, const char *z, int N){
zNew = sqlite3_realloc(zOld, p->nAlloc);
}
if( zNew ){
if( zOld==0 ) memcpy(zNew, p->zText, p->nChar);
if( zOld==0 && p->nChar>0 ) memcpy(zNew, p->zText, p->nChar);
p->zText = zNew;
}else{
p->mallocFailed = 1;
@@ -792,6 +732,7 @@ void sqlite3StrAccumAppend(StrAccum *p, const char *z, int N){
}
}
}
assert( p->zText );
memcpy(&p->zText[p->nChar], z, N);
p->nChar += N;
}