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-rw-r--r--ap_snprintf.c1193
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diff --git a/ap_snprintf.c b/ap_snprintf.c
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+++ b/ap_snprintf.c
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+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ * 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 "config.h"
+#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>
+
+#ifdef HAVE_LIMITS_H
+#include <limits.h>
+#endif
+
+typedef struct {
+ char *curpos;
+ char *endpos;
+} ap_vformatter_buff;
+
+
+#define API_EXPORT(type) type
+#define API_EXPORT_NONSTD(type) type
+
+#define ap_isalnum(c) (isalnum(((unsigned char)(c))))
+#define ap_isalpha(c) (isalpha(((unsigned char)(c))))
+#define ap_iscntrl(c) (iscntrl(((unsigned char)(c))))
+#define ap_isdigit(c) (isdigit(((unsigned char)(c))))
+#define ap_isgraph(c) (isgraph(((unsigned char)(c))))
+#define ap_islower(c) (islower(((unsigned char)(c))))
+#define ap_isprint(c) (isprint(((unsigned char)(c))))
+#define ap_ispunct(c) (ispunct(((unsigned char)(c))))
+#define ap_isspace(c) (isspace(((unsigned char)(c))))
+#define ap_isupper(c) (isupper(((unsigned char)(c))))
+#define ap_isxdigit(c) (isxdigit(((unsigned char)(c))))
+#define ap_tolower(c) (tolower(((unsigned char)(c))))
+#define ap_toupper(c) (toupper(((unsigned char)(c))))
+
+
+typedef enum {
+ NO = 0, YES = 1
+} boolean_e;
+
+#ifndef FALSE
+#define FALSE 0
+#endif
+#ifndef TRUE
+#define TRUE 1
+#endif
+#ifndef AP_LONGEST_LONG
+#define AP_LONGEST_LONG long
+#endif
+#define NUL '\0'
+#define WIDE_INT long
+#define WIDEST_INT AP_LONGEST_LONG
+
+typedef WIDE_INT wide_int;
+typedef unsigned WIDE_INT u_wide_int;
+typedef WIDEST_INT widest_int;
+#ifdef __TANDEM
+/* Although Tandem supports "long long" there is no unsigned variant. */
+typedef unsigned long u_widest_int;
+#else
+typedef unsigned WIDEST_INT u_widest_int;
+#endif
+typedef int bool_int;
+
+#define S_NULL "(null)"
+#define S_NULL_LEN 6
+
+#define FLOAT_DIGITS 6
+#define EXPONENT_LENGTH 10
+
+/*
+ * 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 (p1 > &buf[0] && 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. We don't allow precision to be large
+ * enough that we continue past the start of s.
+ *
+ * NOTE: this makes use of the magic info that s is
+ * always based on num_buf with a size of NUM_BUF_SIZE.
+ */
+#define FIX_PRECISION( adjust, precision, s, s_len ) \
+ if ( adjust ) { \
+ int p = precision < NUM_BUF_SIZE - 1 ? precision : NUM_BUF_SIZE - 1; \
+ while ( s_len < p ) \
+ { \
+ *--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 ])
+ *
+ * Note: we have 2 versions. One is used when we need to use quads
+ * (conv_10_quad), the other when we don't (conv_10). We're assuming the
+ * latter is faster.
+ */
+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_10_quad(widest_int num, register bool_int is_unsigned,
+ register bool_int *is_negative, char *buf_end,
+ register int *len)
+{
+ register char *p = buf_end;
+ u_widest_int magnitude;
+
+ /*
+ * We see if we can use the faster non-quad version by checking the
+ * number against the largest long value it can be. If <=, we
+ * punt to the quicker version.
+ */
+ if ((num <= ULONG_MAX && is_unsigned) || (num <= LONG_MAX && !is_unsigned))
+ return(conv_10( (wide_int)num, is_unsigned, is_negative,
+ buf_end, len));
+
+ if (is_unsigned) {
+ magnitude = (u_widest_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) {
+ widest_int t = num + 1;
+
+ magnitude = ((u_widest_int) -t) + 1;
+ }
+ else
+ magnitude = (u_widest_int) num;
+ }
+
+ /*
+ * We use a do-while loop so that we write at least 1 digit
+ */
+ do {
+ u_widest_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 ])
+ *
+ * As with conv_10, we have a faster version which is used when
+ * the number isn't quad size.
+ */
+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);
+}
+
+static char *conv_p2_quad(u_widest_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;
+
+ if (num <= ULONG_MAX)
+ return(conv_p2( (u_wide_int)num, nbits, format, buf_end, len));
+
+ do {
+ *--p = digits[num & mask];
+ num >>= nbits;
+ }
+ while (num);
+
+ *len = buf_end - p;
+ return (p);
+}
+
+
+/*
+ * Do format conversion placing the output in buffer
+ */
+API_EXPORT(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;
+ widest_int i_quad = (widest_int) 0;
+ u_widest_int ui_quad;
+ 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> */
+
+ enum var_type_enum {
+ IS_QUAD, IS_LONG, IS_SHORT, IS_INT
+ };
+ enum var_type_enum var_type = IS_INT;
+
+ /*
+ * Flag variables
+ */
+ 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
+ */
+ 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 == 'q') {
+ var_type = IS_QUAD;
+ fmt++;
+ }
+ else if (*fmt == 'l') {
+ var_type = IS_LONG;
+ fmt++;
+ }
+ else if (*fmt == 'h') {
+ var_type = IS_SHORT;
+ fmt++;
+ }
+ else {
+ var_type = IS_INT;
+ }
+
+ /*
+ * 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 (var_type == IS_QUAD) {
+ i_quad = va_arg(ap, u_widest_int);
+ s = conv_10_quad(i_quad, 1, &is_negative,
+ &num_buf[NUM_BUF_SIZE], &s_len);
+ }
+ else {
+ if (var_type == IS_LONG)
+ i_num = (wide_int) va_arg(ap, u_wide_int);
+ else if (var_type == IS_SHORT)
+ i_num = (wide_int) (unsigned short) va_arg(ap, unsigned 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 (var_type == IS_QUAD) {
+ i_quad = va_arg(ap, widest_int);
+ s = conv_10_quad(i_quad, 0, &is_negative,
+ &num_buf[NUM_BUF_SIZE], &s_len);
+ }
+ else {
+ if (var_type == IS_LONG)
+ i_num = (wide_int) va_arg(ap, wide_int);
+ else if (var_type == IS_SHORT)
+ i_num = (wide_int) (short) va_arg(ap, 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 (var_type == IS_QUAD) {
+ ui_quad = va_arg(ap, u_widest_int);
+ s = conv_p2_quad(ui_quad, 3, *fmt,
+ &num_buf[NUM_BUF_SIZE], &s_len);
+ }
+ else {
+ if (var_type == IS_LONG)
+ ui_num = (u_wide_int) va_arg(ap, u_wide_int);
+ else if (var_type == IS_SHORT)
+ ui_num = (u_wide_int) (unsigned short) va_arg(ap, unsigned 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 (var_type == IS_QUAD) {
+ ui_quad = va_arg(ap, u_widest_int);
+ s = conv_p2_quad(ui_quad, 4, *fmt,
+ &num_buf[NUM_BUF_SIZE], &s_len);
+ }
+ else {
+ if (var_type == IS_LONG)
+ ui_num = (u_wide_int) va_arg(ap, u_wide_int);
+ else if (var_type == IS_SHORT)
+ ui_num = (u_wide_int) (unsigned short) va_arg(ap, unsigned 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
+ */
+#ifdef HAVE_ISNAN
+ if (isnan(fp_num)) {
+ s = "nan";
+ s_len = 3;
+ }
+ else
+#endif
+#ifdef HAVE_ISINF
+ if (isinf(fp_num)) {
+ s = "inf";
+ s_len = 3;
+ }
+ else
+#endif
+ {
+ 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':
+ if (var_type == IS_QUAD)
+ *(va_arg(ap, widest_int *)) = cc;
+ else if (var_type == IS_LONG)
+ *(va_arg(ap, long *)) = cc;
+ else if (var_type == IS_SHORT)
+ *(va_arg(ap, short *)) = cc;
+ else
+ *(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 or smaller than the size
+ * of the largest unsigned int, we convert the pointer to a
+ * hex number, otherwise we print "%p" to indicate that we
+ * don't handle "%p".
+ */
+ case 'p':
+#ifdef AP_VOID_P_IS_QUAD
+ if (sizeof(void *) <= sizeof(u_widest_int)) {
+ ui_quad = (u_widest_int) va_arg(ap, void *);
+ s = conv_p2_quad(ui_quad, 4, 'x',
+ &num_buf[NUM_BUF_SIZE], &s_len);
+ }
+#else
+ if (sizeof(void *) <= sizeof(u_wide_int)) {
+ ui_num = (u_wide_int) va_arg(ap, void *);
+ s = conv_p2(ui_num, 4, 'x',
+ &num_buf[NUM_BUF_SIZE], &s_len);
+ }
+#endif
+ 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" an ap_snprintf... there's nowhere to flush it to.
+ */
+ return -1;
+}
+
+
+API_EXPORT_NONSTD(int) ap_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;
+}
+
+
+API_EXPORT(int) ap_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;
+}