#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
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;
}
if (value == 0.0) {
*decpt = 1 - fmode;
*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) {
*decpt = 0;
c = *p;
zend_freedtoa(p);
return strdup((c == 'I' ? "INF" : "NAN"));
}
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);
}
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;
digits = zend_dtoa(value, 2, ndigit, &decpt, &sign, NULL);
if (decpt == 9999) {
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) {
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 {
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) {
*dst++ = '0';
*dst++ = dec_point;
do {
*dst++ = '0';
} while (++decpt < 0);
src = digits;
while (*src != '\0') {
*dst++ = *src++;
}
*dst = '\0';
} else {
for (i = 0, src = digits; i < decpt; i++) {
if (*src != '\0') {
*dst++ = *src++;
} else {
*dst++ = '0';
}
}
if (*src != '\0') {
if (src == digits) {
*dst++ = '0';
}
*dst++ = dec_point;
for (i = decpt; digits[i] != '\0'; i++) {
*dst++ = digits[i];
}
}
*dst = '\0';
}
zend_freedtoa(digits);
return (buf);
}
#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
PHPAPI char * ap_php_conv_10(register wide_int num, register bool_int is_unsigned,
register bool_int * is_negative, char *buf_end, register int *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);
if (*is_negative) {
wide_int t = num + 1;
magnitude = ((u_wide_int) - t) + 1;
} else {
magnitude = (u_wide_int) num;
}
}
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);
}
#define NDIG 320
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, int *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 {
p_orig = p = php_ecvt(num, precision + 1, &decimal_point, is_negative);
}
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++ = '.';
}
}
while (*p) {
*s++ = *p++;
}
if (format != 'F') {
char temp[EXPONENT_LENGTH];
int t_len;
bool_int exponent_is_negative;
*s++ = format;
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 ? '-' : '+';
while (t_len--) {
*s++ = *p++;
}
} else {
*s++ = '+';
*s++ = '0';
}
}
*len = s - buf;
free(p_orig);
return (buf);
}
PHPAPI char * ap_php_conv_p2(register u_wide_int num, register int nbits, char format, char *buf_end, register int *len)
{
register int mask = (1 << nbits) - 1;
register char *p = buf_end;
static char low_digits[] = "0123456789abcdef";
static char upper_digits[] = "0123456789ABCDEF";
register char *digits = (format == 'X') ? upper_digits : low_digits;
do {
*--p = digits[num & mask];
num >>= nbits;
}
while (num);
*len = buf_end - p;
return (p);
}
#define NUM_BUF_SIZE 2048
struct buf_area {
char *buf_end;
char *nextb;
};
typedef struct buf_area buffy;
#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++ ) ; \
}
#define FIX_PRECISION( adjust, precision, s, s_len ) \
if ( adjust ) \
while ( s_len < precision ) \
{ \
*--s = '0' ; \
s_len++ ; \
}
#define PAD( width, len, ch ) do \
{ \
INS_CHAR( ch, sp, bep, cc ) ; \
width-- ; \
} \
while ( width > len )
#define PREFIX( str, length, ch ) *--str = ch ; length++ ; has_prefix = YES
static int format_converter(register buffy * odp, const char *fmt, va_list ap)
{
char *sp;
char *bep;
int cc = 0;
int i;
char *s = NULL;
int s_len, 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];
#ifdef HAVE_LOCALE_H
#ifdef ZTS
struct lconv lconv;
#else
struct lconv *lconv = NULL;
#endif
#endif
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 {
adjust = RIGHT;
alternate_form = print_sign = print_blank = NO;
pad_char = ' ';
prefix_char = NUL;
free_zcopy = 0;
fmt++;
if (isascii((int)*fmt) && !islower((int)*fmt)) {
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;
}
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;
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;
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 'h':
fmt++;
if (*fmt == 'h') {
fmt++;
}
default:
modifier = LM_STD;
break;
}
switch (*fmt) {
case 'Z':
zvp = (zval*) va_arg(ap, zval*);
zend_make_printable_zval(zvp, &zcopy, &free_zcopy);
if (free_zcopy) {
zvp = &zcopy;
}
s_len = Z_STRLEN_P(zvp);
s = Z_STRVAL_P(zvp);
if (adjust_precision && 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 'd':
case 'i':
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
}
}
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
}
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
}
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;
*--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 && 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;
}
#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;
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:
continue;
fmt_error:
php_error(E_ERROR, "Illegal length modifier specified '%c' in s[np]printf call", *fmt);
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 && min_width > s_len) {
if (pad_char == '0' && prefix_char != NUL) {
INS_CHAR(*s, sp, bep, cc)
s++;
s_len--;
min_width--;
}
PAD(min_width, s_len, pad_char);
}
for (i = s_len; i != 0; i--) {
INS_CHAR(*s, sp, bep, cc);
s++;
}
if (adjust_width && adjust == LEFT && min_width > s_len)
PAD(min_width, s_len, pad_char);
if (free_zcopy) {
zval_dtor(&zcopy);
}
}
skip_output:
fmt++;
}
odp->nextb = sp;
return (cc);
}
static void strx_printv(int *ccp, char *buf, size_t len, const char *format, va_list ap)
{
buffy od;
int cc;
if (len == 0) {
od.buf_end = (char *) ~0;
od.nextb = (char *) ~0;
} else {
od.buf_end = &buf[len-1];
od.nextb = buf;
}
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,...)
{
unsigned int cc;
va_list ap;
va_start(ap, format);
strx_printv(&cc, buf, len, format, ap);
va_end(ap);
if (cc >= len) {
cc = len -1;
buf[cc] = '\0';
}
return cc;
}
PHPAPI int ap_php_vslprintf(char *buf, size_t len, const char *format, va_list ap)
{
unsigned int cc;
strx_printv(&cc, buf, len, format, ap);
if (cc >= len) {
cc = 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;
}