php-src/main/snprintf.c
Peter Kokot 8d3f8ca12a Remove unused Git attributes ident
The $Id$ keywords were used in Subversion where they can be substituted
with filename, last revision number change, last changed date, and last
user who changed it.

In Git this functionality is different and can be done with Git attribute
ident. These need to be defined manually for each file in the
.gitattributes file and are afterwards replaced with 40-character
hexadecimal blob object name which is based only on the particular file
contents.

This patch simplifies handling of $Id$ keywords by removing them since
they are not used anymore.
2018-07-25 00:53:25 +02:00

1354 lines
32 KiB
C

/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2018 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: |
+----------------------------------------------------------------------+
*/
#define _GNU_SOURCE
#include "php.h"
#include <zend_strtod.h>
#include <stddef.h>
#include <stdio.h>
#include <ctype.h>
#include <sys/types.h>
#include <stdarg.h>
#include <string.h>
#include <stdlib.h>
#include <math.h>
#ifdef HAVE_INTTYPES_H
#include <inttypes.h>
#endif
#ifdef HAVE_LOCALE_H
#include <locale.h>
#ifdef ZTS
#include "ext/standard/php_string.h"
#define LCONV_DECIMAL_POINT (*lconv.decimal_point)
#else
#define LCONV_DECIMAL_POINT (*lconv->decimal_point)
#endif
#else
#define LCONV_DECIMAL_POINT '.'
#endif
/*
* Copyright (c) 2002, 2006 Todd C. Miller <Todd.Miller@courtesan.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Sponsored in part by the Defense Advanced Research Projects
* Agency (DARPA) and Air Force Research Laboratory, Air Force
* Materiel Command, USAF, under agreement number F39502-99-1-0512.
*/
static char * __cvt(double value, int ndigit, int *decpt, int *sign, int fmode, int pad) /* {{{ */
{
register char *s = NULL;
char *p, *rve, c;
size_t siz;
if (ndigit < 0) {
siz = -ndigit + 1;
} else {
siz = ndigit + 1;
}
/* __dtoa() doesn't allocate space for 0 so we do it by hand */
if (value == 0.0) {
*decpt = 1 - fmode; /* 1 for 'e', 0 for 'f' */
*sign = 0;
if ((rve = s = (char *)malloc(ndigit?siz:2)) == NULL) {
return(NULL);
}
*rve++ = '0';
*rve = '\0';
if (!ndigit) {
return(s);
}
} else {
p = zend_dtoa(value, fmode + 2, ndigit, decpt, sign, &rve);
if (*decpt == 9999) {
/* Infinity or Nan, convert to inf or nan like printf */
*decpt = 0;
c = *p;
zend_freedtoa(p);
return strdup((c == 'I' ? "INF" : "NAN"));
}
/* Make a local copy and adjust rve to be in terms of s */
if (pad && fmode) {
siz += *decpt;
}
if ((s = (char *)malloc(siz+1)) == NULL) {
zend_freedtoa(p);
return(NULL);
}
(void) strlcpy(s, p, siz);
rve = s + (rve - p);
zend_freedtoa(p);
}
/* Add trailing zeros */
if (pad) {
siz -= rve - s;
while (--siz) {
*rve++ = '0';
}
*rve = '\0';
}
return(s);
}
/* }}} */
static inline char *php_ecvt(double value, int ndigit, int *decpt, int *sign) /* {{{ */
{
return(__cvt(value, ndigit, decpt, sign, 0, 1));
}
/* }}} */
static inline char *php_fcvt(double value, int ndigit, int *decpt, int *sign) /* {{{ */
{
return(__cvt(value, ndigit, decpt, sign, 1, 1));
}
/* }}} */
PHPAPI char *php_gcvt(double value, int ndigit, char dec_point, char exponent, char *buf) /* {{{ */
{
char *digits, *dst, *src;
int i, decpt, sign;
int mode = ndigit >= 0 ? 2 : 0;
if (mode == 0) {
ndigit = 17;
}
digits = zend_dtoa(value, mode, ndigit, &decpt, &sign, NULL);
if (decpt == 9999) {
/*
* Infinity or NaN, convert to inf or nan with sign.
* We assume the buffer is at least ndigit long.
*/
snprintf(buf, ndigit + 1, "%s%s", (sign && *digits == 'I') ? "-" : "", *digits == 'I' ? "INF" : "NAN");
zend_freedtoa(digits);
return (buf);
}
dst = buf;
if (sign) {
*dst++ = '-';
}
if ((decpt >= 0 && decpt > ndigit) || decpt < -3) { /* use E-style */
/* exponential format (e.g. 1.2345e+13) */
if (--decpt < 0) {
sign = 1;
decpt = -decpt;
} else {
sign = 0;
}
src = digits;
*dst++ = *src++;
*dst++ = dec_point;
if (*src == '\0') {
*dst++ = '0';
} else {
do {
*dst++ = *src++;
} while (*src != '\0');
}
*dst++ = exponent;
if (sign) {
*dst++ = '-';
} else {
*dst++ = '+';
}
if (decpt < 10) {
*dst++ = '0' + decpt;
*dst = '\0';
} else {
/* XXX - optimize */
for (sign = decpt, i = 0; (sign /= 10) != 0; i++)
continue;
dst[i + 1] = '\0';
while (decpt != 0) {
dst[i--] = '0' + decpt % 10;
decpt /= 10;
}
}
} else if (decpt < 0) {
/* standard format 0. */
*dst++ = '0'; /* zero before decimal point */
*dst++ = dec_point;
do {
*dst++ = '0';
} while (++decpt < 0);
src = digits;
while (*src != '\0') {
*dst++ = *src++;
}
*dst = '\0';
} else {
/* standard format */
for (i = 0, src = digits; i < decpt; i++) {
if (*src != '\0') {
*dst++ = *src++;
} else {
*dst++ = '0';
}
}
if (*src != '\0') {
if (src == digits) {
*dst++ = '0'; /* zero before decimal point */
}
*dst++ = dec_point;
for (i = decpt; digits[i] != '\0'; i++) {
*dst++ = digits[i];
}
}
*dst = '\0';
}
zend_freedtoa(digits);
return (buf);
}
/* }}} */
/* {{{ Apache license */
/* ====================================================================
* Copyright (c) 1995-1998 The Apache Group. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the Apache Group
* for use in the Apache HTTP server project (http://www.apache.org/)."
*
* 4. The names "Apache Server" and "Apache Group" must not be used to
* endorse or promote products derived from this software without
* prior written permission.
*
* 5. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the Apache Group
* for use in the Apache HTTP server project (http://www.apache.org/)."
*
* THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE APACHE GROUP OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Group and was originally based
* on public domain software written at the National Center for
* Supercomputing Applications, University of Illinois, Urbana-Champaign.
* For more information on the Apache Group and the Apache HTTP server
* project, please see <http://www.apache.org/>.
*
* This code is based on, and used with the permission of, the
* SIO stdio-replacement strx_* functions by Panos Tsirigotis
* <panos@alumni.cs.colorado.edu> for xinetd.
*/
/* }}} */
#define FALSE 0
#define TRUE 1
#define NUL '\0'
#define INT_NULL ((int *)0)
#define S_NULL "(null)"
#define S_NULL_LEN 6
#define FLOAT_DIGITS 6
#define EXPONENT_LENGTH 10
/*
* Convert num to its decimal format.
* Return value:
* - a pointer to a string containing the number (no sign)
* - len contains the length of the string
* - is_negative is set to TRUE or FALSE depending on the sign
* of the number (always set to FALSE if is_unsigned is TRUE)
*
* The caller provides a buffer for the string: that is the buf_end argument
* which is a pointer to the END of the buffer + 1 (i.e. if the buffer
* is declared as buf[ 100 ], buf_end should be &buf[ 100 ])
*/
/* char * ap_php_conv_10() {{{ */
PHPAPI char * ap_php_conv_10(register wide_int num, register bool_int is_unsigned,
register bool_int * is_negative, char *buf_end, register size_t *len)
{
register char *p = buf_end;
register u_wide_int magnitude;
if (is_unsigned) {
magnitude = (u_wide_int) num;
*is_negative = FALSE;
} else {
*is_negative = (num < 0);
/*
* On a 2's complement machine, negating the most negative integer
* results in a number that cannot be represented as a signed integer.
* Here is what we do to obtain the number's magnitude:
* a. add 1 to the number
* b. negate it (becomes positive)
* c. convert it to unsigned
* d. add 1
*/
if (*is_negative) {
wide_int t = num + 1;
magnitude = ((u_wide_int) - t) + 1;
} else {
magnitude = (u_wide_int) num;
}
}
/*
* We use a do-while loop so that we write at least 1 digit
*/
do {
register u_wide_int new_magnitude = magnitude / 10;
*--p = (char)(magnitude - new_magnitude * 10 + '0');
magnitude = new_magnitude;
}
while (magnitude);
*len = buf_end - p;
return (p);
}
/* }}} */
/* If you change this value then also change bug24640.phpt.
* Also NDIG must be reasonable smaller than NUM_BUF_SIZE.
*/
#define NDIG 320
/*
* Convert a floating point number to a string formats 'f', 'e' or 'E'.
* The result is placed in buf, and len denotes the length of the string
* The sign is returned in the is_negative argument (and is not placed
* in buf).
*/
/* PHPAPI char * php_conv_fp() {{{ */
PHPAPI char * php_conv_fp(register char format, register double num,
boolean_e add_dp, int precision, char dec_point, bool_int * is_negative, char *buf, size_t *len)
{
register char *s = buf;
register char *p, *p_orig;
int decimal_point;
if (precision >= NDIG - 1) {
precision = NDIG - 2;
}
if (format == 'F') {
p_orig = p = php_fcvt(num, precision, &decimal_point, is_negative);
} else { /* either e or E format */
p_orig = p = php_ecvt(num, precision + 1, &decimal_point, is_negative);
}
/*
* Check for Infinity and NaN
*/
if (isalpha((int)*p)) {
*len = strlen(p);
memcpy(buf, p, *len + 1);
*is_negative = FALSE;
free(p_orig);
return (buf);
}
if (format == 'F') {
if (decimal_point <= 0) {
if (num != 0 || precision > 0) {
*s++ = '0';
if (precision > 0) {
*s++ = dec_point;
while (decimal_point++ < 0) {
*s++ = '0';
}
} else if (add_dp) {
*s++ = dec_point;
}
}
} else {
int addz = decimal_point >= NDIG ? decimal_point - NDIG + 1 : 0;
decimal_point -= addz;
while (decimal_point-- > 0) {
*s++ = *p++;
}
while (addz-- > 0) {
*s++ = '0';
}
if (precision > 0 || add_dp) {
*s++ = dec_point;
}
}
} else {
*s++ = *p++;
if (precision > 0 || add_dp) {
*s++ = '.';
}
}
/*
* copy the rest of p, the NUL is NOT copied
*/
while (*p) {
*s++ = *p++;
}
if (format != 'F') {
char temp[EXPONENT_LENGTH]; /* for exponent conversion */
size_t t_len;
bool_int exponent_is_negative;
*s++ = format; /* either e or E */
decimal_point--;
if (decimal_point != 0) {
p = ap_php_conv_10((wide_int) decimal_point, FALSE, &exponent_is_negative, &temp[EXPONENT_LENGTH], &t_len);
*s++ = exponent_is_negative ? '-' : '+';
/*
* Make sure the exponent has at least 2 digits
*/
while (t_len--) {
*s++ = *p++;
}
} else {
*s++ = '+';
*s++ = '0';
}
}
*len = s - buf;
free(p_orig);
return (buf);
}
/* }}} */
/*
* Convert num to a base X number where X is a power of 2. nbits determines X.
* For example, if nbits is 3, we do base 8 conversion
* Return value:
* a pointer to a string containing the number
*
* The caller provides a buffer for the string: that is the buf_end argument
* which is a pointer to the END of the buffer + 1 (i.e. if the buffer
* is declared as buf[ 100 ], buf_end should be &buf[ 100 ])
*/
PHPAPI char * ap_php_conv_p2(register u_wide_int num, register int nbits, char format, char *buf_end, register size_t *len) /* {{{ */
{
register int mask = (1 << nbits) - 1;
register char *p = buf_end;
static const char low_digits[] = "0123456789abcdef";
static const char upper_digits[] = "0123456789ABCDEF";
register const char *digits = (format == 'X') ? upper_digits : low_digits;
do {
*--p = digits[num & mask];
num >>= nbits;
}
while (num);
*len = buf_end - p;
return (p);
}
/* }}} */
/*
* NUM_BUF_SIZE is the size of the buffer used for arithmetic conversions
*
* XXX: this is a magic number; do not decrease it
* Emax = 1023
* NDIG = 320
* NUM_BUF_SIZE >= strlen("-") + Emax + strlrn(".") + NDIG + strlen("E+1023") + 1;
*/
#define NUM_BUF_SIZE 2048
/*
* Descriptor for buffer area
*/
struct buf_area {
char *buf_end;
char *nextb; /* pointer to next byte to read/write */
};
typedef struct buf_area buffy;
/*
* The INS_CHAR macro inserts a character in the buffer and writes
* the buffer back to disk if necessary
* It uses the char pointers sp and bep:
* sp points to the next available character in the buffer
* bep points to the end-of-buffer+1
* While using this macro, note that the nextb pointer is NOT updated.
*
* NOTE: Evaluation of the c argument should not have any side-effects
*/
#define INS_CHAR(c, sp, bep, cc) \
{ \
if (sp < bep) \
{ \
*sp++ = c; \
} \
cc++; \
}
#define NUM( c ) ( c - '0' )
#define STR_TO_DEC( str, num ) \
num = NUM( *str++ ) ; \
while ( isdigit((int)*str ) ) \
{ \
num *= 10 ; \
num += NUM( *str++ ) ; \
}
/*
* This macro does zero padding so that the precision
* requirement is satisfied. The padding is done by
* adding '0's to the left of the string that is going
* to be printed.
*/
#define FIX_PRECISION( adjust, precision, s, s_len ) \
if ( adjust ) \
while ( s_len < (size_t)precision ) \
{ \
*--s = '0' ; \
s_len++ ; \
}
/*
* Macro that does padding. The padding is done by printing
* the character ch.
*/
#define PAD( width, len, ch ) do \
{ \
INS_CHAR( ch, sp, bep, cc ) ; \
width-- ; \
} \
while ( width > len )
/*
* Prefix the character ch to the string str
* Increase length
* Set the has_prefix flag
*/
#define PREFIX( str, length, ch ) *--str = ch ; length++ ; has_prefix = YES
/*
* Do format conversion placing the output in buffer
*/
static int format_converter(register buffy * odp, const char *fmt, va_list ap) /* {{{ */
{
char *sp;
char *bep;
int cc = 0;
size_t i;
char *s = NULL;
size_t s_len;
int free_zcopy;
zval *zvp, zcopy;
int min_width = 0;
int precision = 0;
enum {
LEFT, RIGHT
} adjust;
char pad_char;
char prefix_char;
double fp_num;
wide_int i_num = (wide_int) 0;
u_wide_int ui_num;
char num_buf[NUM_BUF_SIZE];
char char_buf[2]; /* for printing %% and %<unknown> */
#ifdef HAVE_LOCALE_H
#ifdef ZTS
struct lconv lconv;
#else
struct lconv *lconv = NULL;
#endif
#endif
/*
* Flag variables
*/
length_modifier_e modifier;
boolean_e alternate_form;
boolean_e print_sign;
boolean_e print_blank;
boolean_e adjust_precision;
boolean_e adjust_width;
bool_int is_negative;
sp = odp->nextb;
bep = odp->buf_end;
while (*fmt) {
if (*fmt != '%') {
INS_CHAR(*fmt, sp, bep, cc);
} else {
/*
* Default variable settings
*/
adjust = RIGHT;
alternate_form = print_sign = print_blank = NO;
pad_char = ' ';
prefix_char = NUL;
free_zcopy = 0;
fmt++;
/*
* Try to avoid checking for flags, width or precision
*/
if (isascii((int)*fmt) && !islower((int)*fmt)) {
/*
* Recognize flags: -, #, BLANK, +
*/
for (;; fmt++) {
if (*fmt == '-')
adjust = LEFT;
else if (*fmt == '+')
print_sign = YES;
else if (*fmt == '#')
alternate_form = YES;
else if (*fmt == ' ')
print_blank = YES;
else if (*fmt == '0')
pad_char = '0';
else
break;
}
/*
* Check if a width was specified
*/
if (isdigit((int)*fmt)) {
STR_TO_DEC(fmt, min_width);
adjust_width = YES;
} else if (*fmt == '*') {
min_width = va_arg(ap, int);
fmt++;
adjust_width = YES;
if (min_width < 0) {
adjust = LEFT;
min_width = -min_width;
}
} else
adjust_width = NO;
/*
* Check if a precision was specified
*/
if (*fmt == '.') {
adjust_precision = YES;
fmt++;
if (isdigit((int)*fmt)) {
STR_TO_DEC(fmt, precision);
} else if (*fmt == '*') {
precision = va_arg(ap, int);
fmt++;
if (precision < 0)
precision = 0;
} else
precision = 0;
if (precision > FORMAT_CONV_MAX_PRECISION) {
precision = FORMAT_CONV_MAX_PRECISION;
}
} else
adjust_precision = NO;
} else
adjust_precision = adjust_width = NO;
/*
* Modifier check
*/
switch (*fmt) {
case 'L':
fmt++;
modifier = LM_LONG_DOUBLE;
break;
case 'I':
fmt++;
#if SIZEOF_LONG_LONG
if (*fmt == '6' && *(fmt+1) == '4') {
fmt += 2;
modifier = LM_LONG_LONG;
} else
#endif
if (*fmt == '3' && *(fmt+1) == '2') {
fmt += 2;
modifier = LM_LONG;
} else {
#ifdef _WIN64
modifier = LM_LONG_LONG;
#else
modifier = LM_LONG;
#endif
}
break;
case 'l':
fmt++;
#if SIZEOF_LONG_LONG
if (*fmt == 'l') {
fmt++;
modifier = LM_LONG_LONG;
} else
#endif
modifier = LM_LONG;
break;
case 'z':
fmt++;
modifier = LM_SIZE_T;
break;
case 'j':
fmt++;
#if SIZEOF_INTMAX_T
modifier = LM_INTMAX_T;
#else
modifier = LM_SIZE_T;
#endif
break;
case 't':
fmt++;
#if SIZEOF_PTRDIFF_T
modifier = LM_PTRDIFF_T;
#else
modifier = LM_SIZE_T;
#endif
break;
case 'p':
fmt++;
modifier = LM_PHP_INT_T;
break;
case 'h':
fmt++;
if (*fmt == 'h') {
fmt++;
}
/* these are promoted to int, so no break */
default:
modifier = LM_STD;
break;
}
/*
* Argument extraction and printing.
* First we determine the argument type.
* Then, we convert the argument to a string.
* On exit from the switch, s points to the string that
* must be printed, s_len has the length of the string
* The precision requirements, if any, are reflected in s_len.
*
* NOTE: pad_char may be set to '0' because of the 0 flag.
* It is reset to ' ' by non-numeric formats
*/
switch (*fmt) {
case 'Z': {
zvp = (zval*) va_arg(ap, zval*);
free_zcopy = zend_make_printable_zval(zvp, &zcopy);
if (free_zcopy) {
zvp = &zcopy;
}
s_len = Z_STRLEN_P(zvp);
s = Z_STRVAL_P(zvp);
if (adjust_precision && (size_t)precision < s_len) {
s_len = precision;
}
break;
}
case 'u':
switch(modifier) {
default:
i_num = (wide_int) va_arg(ap, unsigned int);
break;
case LM_LONG_DOUBLE:
goto fmt_error;
case LM_LONG:
i_num = (wide_int) va_arg(ap, unsigned long int);
break;
case LM_SIZE_T:
i_num = (wide_int) va_arg(ap, size_t);
break;
#if SIZEOF_LONG_LONG
case LM_LONG_LONG:
i_num = (wide_int) va_arg(ap, u_wide_int);
break;
#endif
#if SIZEOF_INTMAX_T
case LM_INTMAX_T:
i_num = (wide_int) va_arg(ap, uintmax_t);
break;
#endif
#if SIZEOF_PTRDIFF_T
case LM_PTRDIFF_T:
i_num = (wide_int) va_arg(ap, ptrdiff_t);
break;
#endif
case LM_PHP_INT_T:
i_num = (wide_int) va_arg(ap, zend_ulong);
break;
}
/*
* The rest also applies to other integer formats, so fall
* into that case.
*/
case 'd':
case 'i':
/*
* Get the arg if we haven't already.
*/
if ((*fmt) != 'u') {
switch(modifier) {
default:
i_num = (wide_int) va_arg(ap, int);
break;
case LM_LONG_DOUBLE:
goto fmt_error;
case LM_LONG:
i_num = (wide_int) va_arg(ap, long int);
break;
case LM_SIZE_T:
#if SIZEOF_SSIZE_T
i_num = (wide_int) va_arg(ap, ssize_t);
#else
i_num = (wide_int) va_arg(ap, size_t);
#endif
break;
#if SIZEOF_LONG_LONG
case LM_LONG_LONG:
i_num = (wide_int) va_arg(ap, wide_int);
break;
#endif
#if SIZEOF_INTMAX_T
case LM_INTMAX_T:
i_num = (wide_int) va_arg(ap, intmax_t);
break;
#endif
#if SIZEOF_PTRDIFF_T
case LM_PTRDIFF_T:
i_num = (wide_int) va_arg(ap, ptrdiff_t);
break;
#endif
case LM_PHP_INT_T:
i_num = (wide_int) va_arg(ap, zend_long);
break;
}
}
s = ap_php_conv_10(i_num, (*fmt) == 'u', &is_negative,
&num_buf[NUM_BUF_SIZE], &s_len);
FIX_PRECISION(adjust_precision, precision, s, s_len);
if (*fmt != 'u') {
if (is_negative) {
prefix_char = '-';
} else if (print_sign) {
prefix_char = '+';
} else if (print_blank) {
prefix_char = ' ';
}
}
break;
case 'o':
switch(modifier) {
default:
ui_num = (u_wide_int) va_arg(ap, unsigned int);
break;
case LM_LONG_DOUBLE:
goto fmt_error;
case LM_LONG:
ui_num = (u_wide_int) va_arg(ap, unsigned long int);
break;
case LM_SIZE_T:
ui_num = (u_wide_int) va_arg(ap, size_t);
break;
#if SIZEOF_LONG_LONG
case LM_LONG_LONG:
ui_num = (u_wide_int) va_arg(ap, u_wide_int);
break;
#endif
#if SIZEOF_INTMAX_T
case LM_INTMAX_T:
ui_num = (u_wide_int) va_arg(ap, uintmax_t);
break;
#endif
#if SIZEOF_PTRDIFF_T
case LM_PTRDIFF_T:
ui_num = (u_wide_int) va_arg(ap, ptrdiff_t);
break;
#endif
case LM_PHP_INT_T:
ui_num = (u_wide_int) va_arg(ap, zend_ulong);
break;
}
s = ap_php_conv_p2(ui_num, 3, *fmt, &num_buf[NUM_BUF_SIZE], &s_len);
FIX_PRECISION(adjust_precision, precision, s, s_len);
if (alternate_form && *s != '0') {
*--s = '0';
s_len++;
}
break;
case 'x':
case 'X':
switch(modifier) {
default:
ui_num = (u_wide_int) va_arg(ap, unsigned int);
break;
case LM_LONG_DOUBLE:
goto fmt_error;
case LM_LONG:
ui_num = (u_wide_int) va_arg(ap, unsigned long int);
break;
case LM_SIZE_T:
ui_num = (u_wide_int) va_arg(ap, size_t);
break;
#if SIZEOF_LONG_LONG
case LM_LONG_LONG:
ui_num = (u_wide_int) va_arg(ap, u_wide_int);
break;
#endif
#if SIZEOF_INTMAX_T
case LM_INTMAX_T:
ui_num = (u_wide_int) va_arg(ap, uintmax_t);
break;
#endif
#if SIZEOF_PTRDIFF_T
case LM_PTRDIFF_T:
ui_num = (u_wide_int) va_arg(ap, ptrdiff_t);
break;
#endif
case LM_PHP_INT_T:
ui_num = (u_wide_int) va_arg(ap, zend_ulong);
break;
}
s = ap_php_conv_p2(ui_num, 4, *fmt, &num_buf[NUM_BUF_SIZE], &s_len);
FIX_PRECISION(adjust_precision, precision, s, s_len);
if (alternate_form && i_num != 0) {
*--s = *fmt; /* 'x' or 'X' */
*--s = '0';
s_len += 2;
}
break;
case 's':
case 'v':
s = va_arg(ap, char *);
if (s != NULL) {
s_len = strlen(s);
if (adjust_precision && (size_t)precision < s_len) {
s_len = precision;
}
} else {
s = S_NULL;
s_len = S_NULL_LEN;
}
pad_char = ' ';
break;
case 'f':
case 'F':
case 'e':
case 'E':
switch(modifier) {
case LM_LONG_DOUBLE:
fp_num = (double) va_arg(ap, long double);
break;
case LM_STD:
fp_num = va_arg(ap, double);
break;
default:
goto fmt_error;
}
if (zend_isnan(fp_num)) {
s = "NAN";
s_len = 3;
} else if (zend_isinf(fp_num)) {
s = "INF";
s_len = 3;
} else {
#ifdef HAVE_LOCALE_H
#ifdef ZTS
localeconv_r(&lconv);
#else
if (!lconv) {
lconv = localeconv();
}
#endif
#endif
s = php_conv_fp((*fmt == 'f')?'F':*fmt, fp_num, alternate_form,
(adjust_precision == NO) ? FLOAT_DIGITS : precision,
(*fmt == 'f')?LCONV_DECIMAL_POINT:'.',
&is_negative, &num_buf[1], &s_len);
if (is_negative)
prefix_char = '-';
else if (print_sign)
prefix_char = '+';
else if (print_blank)
prefix_char = ' ';
}
break;
case 'g':
case 'k':
case 'G':
case 'H':
switch(modifier) {
case LM_LONG_DOUBLE:
fp_num = (double) va_arg(ap, long double);
break;
case LM_STD:
fp_num = va_arg(ap, double);
break;
default:
goto fmt_error;
}
if (zend_isnan(fp_num)) {
s = "NAN";
s_len = 3;
break;
} else if (zend_isinf(fp_num)) {
if (fp_num > 0) {
s = "INF";
s_len = 3;
} else {
s = "-INF";
s_len = 4;
}
break;
}
if (adjust_precision == NO) {
precision = FLOAT_DIGITS;
} else if (precision == 0) {
precision = 1;
}
/*
* * We use &num_buf[ 1 ], so that we have room for the sign
*/
#ifdef HAVE_LOCALE_H
#ifdef ZTS
localeconv_r(&lconv);
#else
if (!lconv) {
lconv = localeconv();
}
#endif
#endif
s = php_gcvt(fp_num, precision, (*fmt=='H' || *fmt == 'k') ? '.' : LCONV_DECIMAL_POINT, (*fmt == 'G' || *fmt == 'H')?'E':'e', &num_buf[1]);
if (*s == '-') {
prefix_char = *s++;
} else if (print_sign) {
prefix_char = '+';
} else if (print_blank) {
prefix_char = ' ';
}
s_len = strlen(s);
if (alternate_form && (strchr(s, '.')) == NULL) {
s[s_len++] = '.';
}
break;
case 'c':
char_buf[0] = (char) (va_arg(ap, int));
s = &char_buf[0];
s_len = 1;
pad_char = ' ';
break;
case '%':
char_buf[0] = '%';
s = &char_buf[0];
s_len = 1;
pad_char = ' ';
break;
case 'n':
*(va_arg(ap, int *)) = cc;
goto skip_output;
/*
* Always extract the argument as a "char *" pointer. We
* should be using "void *" but there are still machines
* that don't understand it.
* If the pointer size is equal to the size of an unsigned
* integer we convert the pointer to a hex number, otherwise
* we print "%p" to indicate that we don't handle "%p".
*/
case 'p':
if (sizeof(char *) <= sizeof(u_wide_int)) {
ui_num = (u_wide_int)((size_t) va_arg(ap, char *));
s = ap_php_conv_p2(ui_num, 4, 'x',
&num_buf[NUM_BUF_SIZE], &s_len);
if (ui_num != 0) {
*--s = 'x';
*--s = '0';
s_len += 2;
}
} else {
s = "%p";
s_len = 2;
}
pad_char = ' ';
break;
case NUL:
/*
* The last character of the format string was %.
* We ignore it.
*/
continue;
fmt_error:
php_error(E_ERROR, "Illegal length modifier specified '%c' in s[np]printf call", *fmt);
/*
* The default case is for unrecognized %'s.
* We print %<char> to help the user identify what
* option is not understood.
* This is also useful in case the user wants to pass
* the output of format_converter to another function
* that understands some other %<char> (like syslog).
* Note that we can't point s inside fmt because the
* unknown <char> could be preceded by width etc.
*/
default:
char_buf[0] = '%';
char_buf[1] = *fmt;
s = char_buf;
s_len = 2;
pad_char = ' ';
break;
}
if (prefix_char != NUL) {
*--s = prefix_char;
s_len++;
}
if (adjust_width && adjust == RIGHT && (size_t)min_width > s_len) {
if (pad_char == '0' && prefix_char != NUL) {
INS_CHAR(*s, sp, bep, cc)
s++;
s_len--;
min_width--;
}
PAD((size_t)min_width, s_len, pad_char);
}
/*
* Print the string s.
*/
for (i = s_len; i != 0; i--) {
INS_CHAR(*s, sp, bep, cc);
s++;
}
if (adjust_width && adjust == LEFT && (size_t)min_width > s_len)
PAD((size_t)min_width, s_len, pad_char);
if (free_zcopy) {
zval_ptr_dtor_str(&zcopy);
}
}
skip_output:
fmt++;
}
odp->nextb = sp;
return (cc);
}
/* }}} */
/*
* This is the general purpose conversion function.
*/
static void strx_printv(int *ccp, char *buf, size_t len, const char *format, va_list ap) /* {{{ */
{
buffy od;
int cc;
/*
* First initialize the descriptor
* Notice that if no length is given, we initialize buf_end to the
* highest possible address.
*/
if (len == 0) {
od.buf_end = (char *) ~0;
od.nextb = (char *) ~0;
} else {
od.buf_end = &buf[len-1];
od.nextb = buf;
}
/*
* Do the conversion
*/
cc = format_converter(&od, format, ap);
if (len != 0 && od.nextb <= od.buf_end) {
*(od.nextb) = '\0';
}
if (ccp) {
*ccp = cc;
}
}
/* }}} */
PHPAPI int ap_php_slprintf(char *buf, size_t len, const char *format,...) /* {{{ */
{
int cc;
va_list ap;
va_start(ap, format);
strx_printv(&cc, buf, len, format, ap);
va_end(ap);
if ((size_t)cc >= len) {
cc = (int)len -1;
buf[cc] = '\0';
}
return cc;
}
/* }}} */
PHPAPI int ap_php_vslprintf(char *buf, size_t len, const char *format, va_list ap) /* {{{ */
{
int cc;
strx_printv(&cc, buf, len, format, ap);
if ((size_t)cc >= len) {
cc = (int)len -1;
buf[cc] = '\0';
}
return cc;
}
/* }}} */
PHPAPI int ap_php_snprintf(char *buf, size_t len, const char *format,...) /* {{{ */
{
int cc;
va_list ap;
va_start(ap, format);
strx_printv(&cc, buf, len, format, ap);
va_end(ap);
return (cc);
}
/* }}} */
PHPAPI int ap_php_vsnprintf(char *buf, size_t len, const char *format, va_list ap) /* {{{ */
{
int cc;
strx_printv(&cc, buf, len, format, ap);
return (cc);
}
/* }}} */
PHPAPI int ap_php_vasprintf(char **buf, const char *format, va_list ap) /* {{{ */
{
va_list ap2;
int cc;
va_copy(ap2, ap);
cc = ap_php_vsnprintf(NULL, 0, format, ap2);
va_end(ap2);
*buf = NULL;
if (cc >= 0) {
if ((*buf = malloc(++cc)) != NULL) {
if ((cc = ap_php_vsnprintf(*buf, cc, format, ap)) < 0) {
free(*buf);
*buf = NULL;
}
}
}
return cc;
}
/* }}} */
PHPAPI int ap_php_asprintf(char **buf, const char *format, ...) /* {{{ */
{
int cc;
va_list ap;
va_start(ap, format);
cc = vasprintf(buf, format, ap);
va_end(ap);
return cc;
}
/* }}} */
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: sw=4 ts=4 fdm=marker
* vim<600: sw=4 ts=4
*/