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Subject: svn commit: r529269 - in /tomcat/connectors/trunk/jk/native/common:
 ap_snprintf.c ap_snprintf.h
Date: Mon, 16 Apr 2007 14:36:48 -0000
To: tomcat-dev@jakarta.apache.org
From: fuankg@apache.org
Message-Id: <20070416143648.817781A9838@eris.apache.org>

Author: fuankg
Date: Mon Apr 16 07:36:47 2007
New Revision: 529269

URL: http://svn.apache.org/viewvc?view=rev&rev=529269
Log:
added ap_snprintf() from Apache 1.3 to project.

Added:
    tomcat/connectors/trunk/jk/native/common/ap_snprintf.c   (with props)
    tomcat/connectors/trunk/jk/native/common/ap_snprintf.h   (with props)

Added: tomcat/connectors/trunk/jk/native/common/ap_snprintf.c
URL: http://svn.apache.org/viewvc/tomcat/connectors/trunk/jk/native/common/ap_snprintf.c?view=auto&rev=529269
==============================================================================
--- tomcat/connectors/trunk/jk/native/common/ap_snprintf.c (added)
+++ tomcat/connectors/trunk/jk/native/common/ap_snprintf.c Mon Apr 16 07:36:47 2007
@@ -0,0 +1,1178 @@
+/* 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.
+ */
+#define BUILD_STANDALONE
+
+#ifndef BUILD_STANDALONE
+#include "httpd.h"
+#else
+#include "ap_snprintf.h"
+#endif
+
+#include <stdio.h>
+#include <ctype.h>
+#ifndef NETWARE
+#include <sys/types.h>
+#endif
+#include <stdarg.h>
+#include <string.h>
+#include <stdlib.h>
+#include <math.h>
+#ifdef WIN32
+#include <float.h>
+#endif
+
+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);
+}
+
+
+
+#ifndef BUILD_STANDALONE
+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);
+}
+#endif
+
+
+/*
+ * 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;
+
+#ifndef BUILD_STANDALONE
+		    /* 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;
+#endif
+
+		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;
+}

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    svn:eol-style = native

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Added: tomcat/connectors/trunk/jk/native/common/ap_snprintf.h
URL: http://svn.apache.org/viewvc/tomcat/connectors/trunk/jk/native/common/ap_snprintf.h?view=auto&rev=529269
==============================================================================
--- tomcat/connectors/trunk/jk/native/common/ap_snprintf.h (added)
+++ tomcat/connectors/trunk/jk/native/common/ap_snprintf.h Mon Apr 16 07:36:47 2007
@@ -0,0 +1,149 @@
+/* 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.
+ */
+
+/*
+ * The ap_vsnprintf/ap_snprintf functions are based on, and used with the
+ * permission of, the  SIO stdio-replacement strx_* functions by Panos
+ * Tsirigotis <panos@alumni.cs.colorado.edu> for xinetd.
+ */
+
+#ifndef APACHE_AP_SNPRINTF_H
+#define APACHE_AP_SNPRINTF_H
+
+#include <stdio.h>
+#include <limits.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* stuff marked API_EXPORT is part of the API, and intended for use
+ * by modules
+ */
+#ifndef API_EXPORT
+#define API_EXPORT(type)    type
+#endif
+
+/* Stuff marked API_EXPORT_NONSTD is part of the API, and intended for
+ * use by modules.  The difference between API_EXPORT and
+ * API_EXPORT_NONSTD is that the latter is required for any functions
+ * which use varargs or are used via indirect function call.  This
+ * is to accomodate the two calling conventions in windows dlls.
+ */
+#ifndef API_EXPORT_NONSTD
+#define API_EXPORT_NONSTD(type)    type
+#endif
+
+#if !defined(__GNUC__) || __GNUC__ < 2 || \
+    (__GNUC__ == 2 && __GNUC_MINOR__ < 7) ||\
+    defined(NEXT)
+#define __attribute__(__x)
+#endif
+
+/* 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))))
+
+
+/* ap_vformatter() is a generic printf-style formatting routine
+ * with some extensions.  The extensions are:
+ *
+ * %pA	takes a struct in_addr *, and prints it as a.b.c.d
+ * %pI	takes a struct sockaddr_in * and prints it as a.b.c.d:port
+ * %pp  takes a void * and outputs it in hex
+ *
+ * The %p hacks are to force gcc's printf warning code to skip
+ * over a pointer argument without complaining.  This does
+ * mean that the ANSI-style %p (output a void * in hex format) won't
+ * work as expected at all, but that seems to be a fair trade-off
+ * for the increased robustness of having printf-warnings work.
+ *
+ * Additionally, ap_vformatter allows for arbitrary output methods
+ * using the ap_vformatter_buff and flush_func.
+ *
+ * The ap_vformatter_buff has two elements curpos and endpos.
+ * curpos is where ap_vformatter will write the next byte of output.
+ * It proceeds writing output to curpos, and updating curpos, until
+ * either the end of output is reached, or curpos == endpos (i.e. the
+ * buffer is full).
+ *
+ * If the end of output is reached, ap_vformatter returns the
+ * number of bytes written.
+ *
+ * When the buffer is full, the flush_func is called.  The flush_func
+ * can return -1 to indicate that no further output should be attempted,
+ * and ap_vformatter will return immediately with -1.  Otherwise
+ * the flush_func should flush the buffer in whatever manner is
+ * appropriate, re-initialize curpos and endpos, and return 0.
+ *
+ * Note that flush_func is only invoked as a result of attempting to
+ * write another byte at curpos when curpos >= endpos.  So for
+ * example, it's possible when the output exactly matches the buffer
+ * space available that curpos == endpos will be true when
+ * ap_vformatter returns.
+ *
+ * ap_vformatter does not call out to any other code, it is entirely
+ * self-contained.  This allows the callers to do things which are
+ * otherwise "unsafe".  For example, ap_psprintf uses the "scratch"
+ * space at the unallocated end of a block, and doesn't actually
+ * complete the allocation until ap_vformatter returns.  ap_psprintf
+ * would be completely broken if ap_vformatter were to call anything
+ * that used a pool.  Similarly http_bprintf() uses the "scratch"
+ * space at the end of its output buffer, and doesn't actually note
+ * that the space is in use until it either has to flush the buffer
+ * or until ap_vformatter returns.
+ */
+
+typedef struct {
+    char *curpos;
+    char *endpos;
+} ap_vformatter_buff;
+
+API_EXPORT(int) ap_vformatter(int (*flush_func)(ap_vformatter_buff *),
+    ap_vformatter_buff *, const char *fmt, va_list ap);
+
+/* These are snprintf implementations based on ap_vformatter().
+ *
+ * Note that various standards and implementations disagree on the return
+ * value of snprintf, and side-effects due to %n in the formatting string.
+ * ap_snprintf behaves as follows:
+ *
+ * Process the format string until the entire string is exhausted, or
+ * the buffer fills.  If the buffer fills then stop processing immediately
+ * (so no further %n arguments are processed), and return the buffer
+ * length.  In all cases the buffer is NUL terminated. The return value
+ * is the number of characters placed in the buffer, excluding the
+ * terminating NUL. All this implies that, at most, (len-1) characters
+ * will be copied over; if the return value is >= len, then truncation
+ * occured.
+ *
+ * In no event does ap_snprintf return a negative number.
+ */
+API_EXPORT_NONSTD(int) ap_snprintf(char *buf, size_t len, const char *format,...)
+			    __attribute__((format(printf,3,4)));
+API_EXPORT(int) ap_vsnprintf(char *buf, size_t len, const char *format,
+			     va_list ap);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif	/* !APACHE_AP_SNPRINTF_H */

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Propchange: tomcat/connectors/trunk/jk/native/common/ap_snprintf.h
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    svn:keywords = Id


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