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Diffstat (limited to 'main/snprintf.c')
| -rw-r--r-- | main/snprintf.c | 1316 |
1 files changed, 1316 insertions, 0 deletions
diff --git a/main/snprintf.c b/main/snprintf.c new file mode 100644 index 0000000..4514bd6 --- /dev/null +++ b/main/snprintf.c @@ -0,0 +1,1316 @@ +/* + +----------------------------------------------------------------------+ + | PHP Version 5 | + +----------------------------------------------------------------------+ + | Copyright (c) 1997-2013 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: | + +----------------------------------------------------------------------+ +*/ + +/* $Id$ */ + +#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> +#define LCONV_DECIMAL_POINT (*lconv->decimal_point) +#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; + + digits = zend_dtoa(value, 2, 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() {{{ */ +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); + + /* + * 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, 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 { /* 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 */ + int 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 ]) + */ +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); +} +/* }}} */ + +/* + * 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 < 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; + 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]; /* for printing %% and %<unknown> */ + +#ifdef HAVE_LOCALE_H + struct lconv *lconv = NULL; +#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 '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*); + 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 + } + /* + * 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 + } + } + 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; /* '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 && 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 + if (!lconv) { + lconv = localeconv(); + } +#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 + if (!lconv) { + lconv = localeconv(); + } +#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 && 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); + } + /* + * Print the string s. + */ + 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); +} +/* }}} */ + +/* + * 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,...) /* {{{ */ +{ + 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; +} +/* }}} */ + +/* + * Local variables: + * tab-width: 4 + * c-basic-offset: 4 + * End: + * vim600: sw=4 ts=4 fdm=marker + * vim<600: sw=4 ts=4 + */ |