+++ /dev/null
-/*
- * snprintf.c -- formatted output to a string
- *
- * This is an implementation of snprintf() and vsnprintf()
- * taken from the Apache web server. This is only used on
- * systems which do not have a native version.
- */
-
-/* ====================================================================
- * Copyright (c) 1995-1999 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. For written permission, please contact
- * apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache"
- * nor may "Apache" appear in their names without prior written
- * permission of the Apache Group.
- *
- * 6. 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.
- */
-
-#include <stdio.h>
-#include <ctype.h>
-#include <sys/types.h>
-#include <stdarg.h>
-#include <string.h>
-#include <stdlib.h>
-#include <math.h>
-#include <netinet/in.h>
-
-typedef enum {
- NO = 0, YES = 1
-} boolean_e;
-
-#ifndef FALSE
-#define FALSE 0
-#endif
-#ifndef TRUE
-#define TRUE 1
-#endif
-#define NUL '\0'
-#define INT_NULL ((int *)0)
-#define WIDE_INT long
-
-typedef struct {
- char *curpos;
- char *endpos;
-} ap_vformatter_buff;
-
-typedef WIDE_INT wide_int;
-typedef unsigned WIDE_INT u_wide_int;
-typedef int bool_int;
-
-#define S_NULL "(null)"
-#define S_NULL_LEN 6
-
-#define FLOAT_DIGITS 6
-#define EXPONENT_LENGTH 10
-
-/* These macros allow correct support of 8-bit characters on systems which
- * support 8-bit characters. Pretty dumb how the cast is required, but
- * that's legacy libc for ya. These new macros do not support EOF like
- * the standard macros do. Tough.
- */
-#define ap_isalpha(c) (isalpha(((unsigned char)(c))))
-#define ap_isdigit(c) (isdigit(((unsigned char)(c))))
-#define ap_islower(c) (islower(((unsigned char)(c))))
-
-/*
- * NUM_BUF_SIZE is the size of the buffer used for arithmetic conversions
- *
- * XXX: this is a magic number; do not decrease it
- */
-#define NUM_BUF_SIZE 512
-
-/*
- * cvt.c - IEEE floating point formatting routines for FreeBSD
- * from GNU libc-4.6.27. Modified to be thread safe.
- */
-
-/*
- * ap_ecvt converts to decimal
- * the number of digits is specified by ndigit
- * decpt is set to the position of the decimal point
- * sign is set to 0 for positive, 1 for negative
- */
-
-#define NDIG 80
-
-/* buf must have at least NDIG bytes */
-static char *ap_cvt(double arg, int ndigits, int *decpt, int *sign, int eflag, char *buf)
-{
- register int r2;
- double fi, fj;
- register char *p, *p1;
-
- if (ndigits >= NDIG - 1)
- ndigits = NDIG - 2;
- r2 = 0;
- *sign = 0;
- p = &buf[0];
- if (arg < 0) {
- *sign = 1;
- arg = -arg;
- }
- arg = modf(arg, &fi);
- p1 = &buf[NDIG];
- /*
- * Do integer part
- */
- if (fi != 0) {
- p1 = &buf[NDIG];
- while (fi != 0) {
- fj = modf(fi / 10, &fi);
- *--p1 = (int) ((fj + .03) * 10) + '0';
- r2++;
- }
- while (p1 < &buf[NDIG])
- *p++ = *p1++;
- }
- else if (arg > 0) {
- while ((fj = arg * 10) < 1) {
- arg = fj;
- r2--;
- }
- }
- p1 = &buf[ndigits];
- if (eflag == 0)
- p1 += r2;
- *decpt = r2;
- if (p1 < &buf[0]) {
- buf[0] = '\0';
- return (buf);
- }
- while (p <= p1 && p < &buf[NDIG]) {
- arg *= 10;
- arg = modf(arg, &fj);
- *p++ = (int) fj + '0';
- }
- if (p1 >= &buf[NDIG]) {
- buf[NDIG - 1] = '\0';
- return (buf);
- }
- p = p1;
- *p1 += 5;
- while (*p1 > '9') {
- *p1 = '0';
- if (p1 > buf)
- ++ * --p1;
- else {
- *p1 = '1';
- (*decpt)++;
- if (eflag == 0) {
- if (p > buf)
- *p = '0';
- p++;
- }
- }
- }
- *p = '\0';
- return (buf);
-}
-
-static char *ap_ecvt(double arg, int ndigits, int *decpt, int *sign, char *buf)
-{
- return (ap_cvt(arg, ndigits, decpt, sign, 1, buf));
-}
-
-static char *ap_fcvt(double arg, int ndigits, int *decpt, int *sign, char *buf)
-{
- return (ap_cvt(arg, ndigits, decpt, sign, 0, buf));
-}
-
-/*
- * ap_gcvt - Floating output conversion to
- * minimal length string
- */
-
-static char *ap_gcvt(double number, int ndigit, char *buf, boolean_e altform)
-{
- int sign, decpt;
- register char *p1, *p2;
- register int i;
- char buf1[NDIG];
-
- p1 = ap_ecvt(number, ndigit, &decpt, &sign, buf1);
- p2 = buf;
- if (sign)
- *p2++ = '-';
- for (i = ndigit - 1; i > 0 && p1[i] == '0'; i--)
- ndigit--;
- if ((decpt >= 0 && decpt - ndigit > 4)
- || (decpt < 0 && decpt < -3)) { /* use E-style */
- decpt--;
- *p2++ = *p1++;
- *p2++ = '.';
- for (i = 1; i < ndigit; i++)
- *p2++ = *p1++;
- *p2++ = 'e';
- if (decpt < 0) {
- decpt = -decpt;
- *p2++ = '-';
- }
- else
- *p2++ = '+';
- if (decpt / 100 > 0)
- *p2++ = decpt / 100 + '0';
- if (decpt / 10 > 0)
- *p2++ = (decpt % 100) / 10 + '0';
- *p2++ = decpt % 10 + '0';
- }
- else {
- if (decpt <= 0) {
- if (*p1 != '0')
- *p2++ = '.';
- while (decpt < 0) {
- decpt++;
- *p2++ = '0';
- }
- }
- for (i = 1; i <= ndigit; i++) {
- *p2++ = *p1++;
- if (i == decpt)
- *p2++ = '.';
- }
- if (ndigit < decpt) {
- while (ndigit++ < decpt)
- *p2++ = '0';
- *p2++ = '.';
- }
- }
- if (p2[-1] == '.' && !altform)
- p2--;
- *p2 = '\0';
- return (buf);
-}
-
-/*
- * 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) { \
- vbuff->curpos = sp; \
- if (flush_func(vbuff)) \
- return -1; \
- sp = vbuff->curpos; \
- bep = vbuff->endpos; \
- } \
- *sp++ = (c); \
- cc++; \
- }
-
-#define NUM( c ) ( c - '0' )
-
-#define STR_TO_DEC( str, num ) \
- num = NUM( *str++ ) ; \
- while ( ap_isdigit( *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
-
-
-/*
- * 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 ])
- */
-static char *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);
-}
-
-
-
-static char *conv_in_addr(struct in_addr *ia, char *buf_end, int *len)
-{
- unsigned addr = ntohl(ia->s_addr);
- char *p = buf_end;
- bool_int is_negative;
- int sub_len;
-
- p = conv_10((addr & 0x000000FF) , TRUE, &is_negative, p, &sub_len);
- *--p = '.';
- p = conv_10((addr & 0x0000FF00) >> 8, TRUE, &is_negative, p, &sub_len);
- *--p = '.';
- p = conv_10((addr & 0x00FF0000) >> 16, TRUE, &is_negative, p, &sub_len);
- *--p = '.';
- p = conv_10((addr & 0xFF000000) >> 24, TRUE, &is_negative, p, &sub_len);
-
- *len = buf_end - p;
- return (p);
-}
-
-
-
-static char *conv_sockaddr_in(struct sockaddr_in *si, char *buf_end, int *len)
-{
- char *p = buf_end;
- bool_int is_negative;
- int sub_len;
-
- p = conv_10(ntohs(si->sin_port), TRUE, &is_negative, p, &sub_len);
- *--p = ':';
- p = conv_in_addr(&si->sin_addr, p, &sub_len);
-
- *len = buf_end - p;
- return (p);
-}
-
-
-
-/*
- * 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).
- */
-static char *conv_fp(register char format, register double num,
- boolean_e add_dp, int precision, bool_int *is_negative,
- char *buf, int *len)
-{
- register char *s = buf;
- register char *p;
- int decimal_point;
- char buf1[NDIG];
-
- if (format == 'f')
- p = ap_fcvt(num, precision, &decimal_point, is_negative, buf1);
- else /* either e or E format */
- p = ap_ecvt(num, precision + 1, &decimal_point, is_negative, buf1);
-
- /*
- * Check for Infinity and NaN
- */
- if (ap_isalpha(*p)) {
- *len = strlen(strcpy(buf, p));
- *is_negative = FALSE;
- return (buf);
- }
-
- if (format == 'f') {
- if (decimal_point <= 0) {
- *s++ = '0';
- if (precision > 0) {
- *s++ = '.';
- while (decimal_point++ < 0)
- *s++ = '0';
- }
- else if (add_dp)
- *s++ = '.';
- }
- else {
- while (decimal_point-- > 0)
- *s++ = *p++;
- if (precision > 0 || add_dp)
- *s++ = '.';
- }
- }
- 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 = 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
- */
- if (t_len == 1)
- *s++ = '0';
- while (t_len--)
- *s++ = *p++;
- }
- else {
- *s++ = '+';
- *s++ = '0';
- *s++ = '0';
- }
- }
-
- *len = s - buf;
- 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 ])
- */
-static char *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 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);
-}
-
-
-/*
- * Do format conversion placing the output in buffer
- */
-int ap_vformatter(int (*flush_func)(ap_vformatter_buff *),
- ap_vformatter_buff *vbuff, const char *fmt, va_list ap)
-{
- register char *sp;
- register char *bep;
- register int cc = 0;
- register int i;
-
- register char *s = NULL;
- char *q;
- int s_len;
-
- register 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> */
-
- /*
- * Flag variables
- */
- boolean_e is_long;
- 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 = vbuff->curpos;
- bep = vbuff->endpos;
-
- 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;
-
- fmt++;
-
- /*
- * Try to avoid checking for flags, width or precision
- */
- if (!ap_islower(*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 (ap_isdigit(*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
- *
- * XXX: an unreasonable amount of precision may be specified
- * resulting in overflow of num_buf. Currently we
- * ignore this possibility.
- */
- if (*fmt == '.') {
- adjust_precision = YES;
- fmt++;
- if (ap_isdigit(*fmt)) {
- STR_TO_DEC(fmt, precision);
- }
- else if (*fmt == '*') {
- precision = va_arg(ap, int);
- fmt++;
- if (precision < 0)
- precision = 0;
- }
- else
- precision = 0;
- }
- else
- adjust_precision = NO;
- }
- else
- adjust_precision = adjust_width = NO;
-
- /*
- * Modifier check
- */
- if (*fmt == 'l') {
- is_long = YES;
- fmt++;
- }
- else {
- if (*fmt == 'h') /* "short" backward compatibility */
- ++fmt;
- is_long = NO;
- }
-
- /*
- * 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 'u':
- if (is_long)
- i_num = va_arg(ap, u_wide_int);
- else
- i_num = (wide_int) va_arg(ap, unsigned int);
- s = conv_10(i_num, 1, &is_negative,
- &num_buf[NUM_BUF_SIZE], &s_len);
- FIX_PRECISION(adjust_precision, precision, s, s_len);
- break;
-
- case 'd':
- case 'i':
- if (is_long)
- i_num = va_arg(ap, wide_int);
- else
- i_num = (wide_int) va_arg(ap, int);
- s = conv_10(i_num, 0, &is_negative,
- &num_buf[NUM_BUF_SIZE], &s_len);
- FIX_PRECISION(adjust_precision, precision, s, s_len);
-
- if (is_negative)
- prefix_char = '-';
- else if (print_sign)
- prefix_char = '+';
- else if (print_blank)
- prefix_char = ' ';
- break;
-
-
- case 'o':
- if (is_long)
- ui_num = va_arg(ap, u_wide_int);
- else
- ui_num = (u_wide_int) va_arg(ap, unsigned int);
- s = 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':
- if (is_long)
- ui_num = (u_wide_int) va_arg(ap, u_wide_int);
- else
- ui_num = (u_wide_int) va_arg(ap, unsigned int);
- s = 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':
- 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 'e':
- case 'E':
- fp_num = va_arg(ap, double);
- /*
- * * We use &num_buf[ 1 ], so that we have room for the sign
- */
- s = conv_fp(*fmt, fp_num, alternate_form,
- (adjust_precision == NO) ? FLOAT_DIGITS : precision,
- &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 'G':
- 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
- */
- s = ap_gcvt(va_arg(ap, double), precision, &num_buf[1],
- alternate_form);
- if (*s == '-')
- prefix_char = *s++;
- else if (print_sign)
- prefix_char = '+';
- else if (print_blank)
- prefix_char = ' ';
-
- s_len = strlen(s);
-
- if (alternate_form && (q = strchr(s, '.')) == NULL) {
- s[s_len++] = '.';
- s[s_len] = '\0'; /* delimit for following strchr() */
- }
- if (*fmt == 'G' && (q = strchr(s, 'e')) != NULL)
- *q = 'E';
- 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;
- break;
-
- /*
- * This is where we extend the printf format, with a second
- * type specifier
- */
- case 'p':
- switch(*++fmt) {
- /*
- * 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':
- ui_num = (u_wide_int) va_arg(ap, void *);
-
- if (sizeof(char *) <= sizeof(u_wide_int))
- s = conv_p2(ui_num, 4, 'x',
- &num_buf[NUM_BUF_SIZE], &s_len);
- else {
- s = "%p";
- s_len = 2;
- prefix_char = NUL;
- }
- pad_char = ' ';
- break;
-
- /* print a struct sockaddr_in as a.b.c.d:port */
- case 'I':
- {
- struct sockaddr_in *si;
-
- si = va_arg(ap, struct sockaddr_in *);
- if (si != NULL) {
- s = conv_sockaddr_in(si, &num_buf[NUM_BUF_SIZE], &s_len);
- if (adjust_precision && precision < s_len)
- s_len = precision;
- }
- else {
- s = S_NULL;
- s_len = S_NULL_LEN;
- }
- pad_char = ' ';
- }
- break;
-
- /* print a struct in_addr as a.b.c.d */
- case 'A':
- {
- struct in_addr *ia;
-
- ia = va_arg(ap, struct in_addr *);
- if (ia != NULL) {
- s = conv_in_addr(ia, &num_buf[NUM_BUF_SIZE], &s_len);
- if (adjust_precision && precision < s_len)
- s_len = precision;
- }
- else {
- s = S_NULL;
- s_len = S_NULL_LEN;
- }
- pad_char = ' ';
- }
- break;
-
- case NUL:
- /* if %p ends the string, oh well ignore it */
- continue;
-
- default:
- s = "bogus %p";
- s_len = 8;
- prefix_char = NUL;
- break;
- }
- break;
-
- case NUL:
- /*
- * The last character of the format string was %.
- * We ignore it.
- */
- continue;
-
-
- /*
- * 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 != S_NULL && s != char_buf) {
- *--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);
- }
- fmt++;
- }
- vbuff->curpos = sp;
- return cc;
-}
-
-
-static int snprintf_flush(ap_vformatter_buff *vbuff)
-{
- /* if the buffer fills we have to abort immediately, there is no way
- * to "flush" a snprintf... there's nowhere to flush it to.
- */
- return -1;
-}
-
-
-int snprintf(char *buf, size_t len, const char *format,...)
-{
- int cc;
- va_list ap;
- ap_vformatter_buff vbuff;
-
- if (len == 0)
- return 0;
-
- /* save one byte for nul terminator */
- vbuff.curpos = buf;
- vbuff.endpos = buf + len - 1;
- va_start(ap, format);
- cc = ap_vformatter(snprintf_flush, &vbuff, format, ap);
- va_end(ap);
- *vbuff.curpos = '\0';
- return (cc == -1) ? len : cc;
-}
-
-
-int vsnprintf(char *buf, size_t len, const char *format, va_list ap)
-{
- int cc;
- ap_vformatter_buff vbuff;
-
- if (len == 0)
- return 0;
-
- /* save one byte for nul terminator */
- vbuff.curpos = buf;
- vbuff.endpos = buf + len - 1;
- cc = ap_vformatter(snprintf_flush, &vbuff, format, ap);
- *vbuff.curpos = '\0';
- return (cc == -1) ? len : cc;
-}
projects / mmh / commitdiff