diff options
| -rw-r--r-- | plugins/snprintf.c | 1259 |
1 files changed, 931 insertions, 328 deletions
diff --git a/plugins/snprintf.c b/plugins/snprintf.c index 1474b639..ef1d2543 100644 --- a/plugins/snprintf.c +++ b/plugins/snprintf.c @@ -1,377 +1,980 @@ /* - * Copyright (c) 1983, 1995, 1996 Eric P. Allman - * Copyright (c) 1988, 1993 - * The Regents of the University of California. 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 acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS 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 REGENTS OR 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. + * Copyright Patrick Powell 1995 + * This code is based on code written by Patrick Powell (papowell@astart.com) + * It may be used for any purpose as long as this notice remains intact + * on all source code distributions */ -/* Some changes made by bbraun@synack.net for use with xinetd */ +/************************************************************** + * Original: + * Patrick Powell Tue Apr 11 09:48:21 PDT 1995 + * A bombproof version of doprnt (dopr) included. + * Sigh. This sort of thing is always nasty do deal with. Note that + * the version here does not include floating point... + * + * snprintf() is used instead of sprintf() as it does limit checks + * for string length. This covers a nasty loophole. + * + * The other functions are there to prevent NULL pointers from + * causing nast effects. + * + * More Recently: + * Brandon Long <blong@fiction.net> 9/15/96 for mutt 0.43 + * This was ugly. It is still ugly. I opted out of floating point + * numbers, but the formatter understands just about everything + * from the normal C string format, at least as far as I can tell from + * the Solaris 2.5 printf(3S) man page. + * + * Brandon Long <blong@fiction.net> 10/22/97 for mutt 0.87.1 + * Ok, added some minimal floating point support, which means this + * probably requires libm on most operating systems. Don't yet + * support the exponent (e,E) and sigfig (g,G). Also, fmtint() + * was pretty badly broken, it just wasn't being exercised in ways + * which showed it, so that's been fixed. Also, formated the code + * to mutt conventions, and removed dead code left over from the + * original. Also, there is now a builtin-test, just compile with: + * gcc -DTEST_SNPRINTF -o snprintf snprintf.c -lm + * and run snprintf for results. + * + * Thomas Roessler <roessler@guug.de> 01/27/98 for mutt 0.89i + * The PGP code was using unsigned hexadecimal formats. + * Unfortunately, unsigned formats simply didn't work. + * + * Michael Elkins <me@cs.hmc.edu> 03/05/98 for mutt 0.90.8 + * The original code assumed that both snprintf() and vsnprintf() were + * missing. Some systems only have snprintf() but not vsnprintf(), so + * the code is now broken down under HAVE_SNPRINTF and HAVE_VSNPRINTF. + * + * Andrew Tridgell (tridge@samba.org) Oct 1998 + * fixed handling of %.0f + * added test for HAVE_LONG_DOUBLE + * + * tridge@samba.org, idra@samba.org, April 2001 + * got rid of fcvt code (twas buggy and made testing harder) + * added C99 semantics + * + **************************************************************/ -#if !defined(HAVE_SNPRINTF) +#ifndef NO_CONFIG_H /* for some tests */ +#include "config.h" +#else +#define NULL 0 +#endif -/* Extracted from sendmail 8.8.5 */ -#ifndef lint -static char sccsid[] = "@(#)$Id$ excerpted from conf.c 8.333 (Berkeley) 1/21/97"; -#endif /* not lint */ -# ifdef __STDC__ -#include <stdio.h> -#include <stdlib.h> +#ifdef TEST_SNPRINTF /* need math library headers for testing */ +#include <math.h> +#endif -#ifndef __P -#define __P(p) p +#ifdef HAVE_STRING_H +#include <string.h> #endif +#ifdef HAVE_STRINGS_H +#include <strings.h> +#endif +#ifdef HAVE_CTYPE_H +#include <ctype.h> +#endif +#ifdef HAVE_SYS_TYPES_H +#include <sys/types.h> +#endif +#ifdef HAVE_STDARG_H #include <stdarg.h> -#define VA_LOCAL_DECL va_list ap; -#define VA_START(f) va_start(ap, f) -#define VA_END va_end(ap) +#endif +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#endif +#if defined(HAVE_SNPRINTF) && defined(HAVE_VSNPRINTF) && defined(HAVE_C99_VSNPRINTF) +/* only include stdio.h if we are not re-defining snprintf or vsnprintf */ +#include <stdio.h> + /* make the compiler happy with an empty file */ + void dummy_snprintf(void) {} #else -#include <sys/types.h> -#include <stdio.h> +#ifdef HAVE_LONG_DOUBLE +#define LDOUBLE long double +#else +#define LDOUBLE double +#endif -#ifndef __P -#define __P(p) () +#ifdef HAVE_LONG_LONG +#define LLONG long long +#else +#define LLONG long #endif -#include <varargs.h> -#define VA_LOCAL_DECL va_list ap; -#define VA_START(f) va_start(ap) -#define VA_END va_end(ap) +/* free memory if the pointer is valid and zero the pointer */ +#ifndef SAFE_FREE +#define SAFE_FREE(x) do { if ((x) != NULL) {free((x)); (x)=NULL;} } while(0) +#endif +#ifndef VA_COPY +#ifdef HAVE_VA_COPY +#define VA_COPY(dest, src) __va_copy(dest, src) +#else +#define VA_COPY(dest, src) (dest) = (src) #endif +#endif + +static size_t dopr(char *buffer, size_t maxlen, const char *format, + va_list args_in); +static void fmtstr(char *buffer, size_t *currlen, size_t maxlen, + char *value, int flags, int min, int max); +static void fmtint(char *buffer, size_t *currlen, size_t maxlen, + long value, int base, int min, int max, int flags); +static void fmtfp(char *buffer, size_t *currlen, size_t maxlen, + LDOUBLE fvalue, int min, int max, int flags); +static void dopr_outch(char *buffer, size_t *currlen, size_t maxlen, char c); + /* -** SNPRINTF, VSNPRINT -- counted versions of printf -** -** These versions have been grabbed off the net. They have been -** cleaned up to compile properly and support for .precision and -** %lx has been added. -*/ + * dopr(): poor man's version of doprintf + */ -/************************************************************** - * Original: - * Patrick Powell Tue Apr 11 09:48:21 PDT 1995 - * A bombproof version of doprnt (dopr) included. - * Sigh. This sort of thing is always nasty do deal with. Note that - * the version here does not include floating point... - * - * snprintf() is used instead of sprintf() as it does limit checks - * for string length. This covers a nasty loophole. - * - * The other functions are there to prevent NULL pointers from - * causing nast effects. - **************************************************************/ +/* format read states */ +#define DP_S_DEFAULT 0 +#define DP_S_FLAGS 1 +#define DP_S_MIN 2 +#define DP_S_DOT 3 +#define DP_S_MAX 4 +#define DP_S_MOD 5 +#define DP_S_CONV 6 +#define DP_S_DONE 7 + +/* format flags - Bits */ +#define DP_F_MINUS (1 << 0) +#define DP_F_PLUS (1 << 1) +#define DP_F_SPACE (1 << 2) +#define DP_F_NUM (1 << 3) +#define DP_F_ZERO (1 << 4) +#define DP_F_UP (1 << 5) +#define DP_F_UNSIGNED (1 << 6) -/*static char _id[] = "$Id$";*/ -static void dopr(); -static char *end; -#ifndef _SCO_DS -/* VARARGS3 */ -int -# ifdef __STDC__ -snprintf(char *str, size_t count, const char *fmt, ...) -# else -snprintf(str, count, fmt, va_alist) - char *str; - size_t count; - char *fmt; - va_dcl +/* Conversion Flags */ +#define DP_C_SHORT 1 +#define DP_C_LONG 2 +#define DP_C_LDOUBLE 3 +#define DP_C_LLONG 4 + +#define char_to_int(p) ((p)- '0') +#ifndef MAX +#define MAX(p,q) (((p) >= (q)) ? (p) : (q)) #endif + +static size_t dopr(char *buffer, size_t maxlen, const char *format, va_list args_in) { - int len; - VA_LOCAL_DECL + char ch; + LLONG value; + LDOUBLE fvalue; + char *strvalue; + int min; + int max; + int state; + int flags; + int cflags; + size_t currlen; + va_list args; + + VA_COPY(args, args_in); + + state = DP_S_DEFAULT; + currlen = flags = cflags = min = 0; + max = -1; + ch = *format++; + + while (state != DP_S_DONE) { + if (ch == '\0') + state = DP_S_DONE; - VA_START(fmt); - len = vsnprintf(str, count, fmt, ap); - VA_END; - return len; + switch(state) { + case DP_S_DEFAULT: + if (ch == '%') + state = DP_S_FLAGS; + else + dopr_outch (buffer, &currlen, maxlen, ch); + ch = *format++; + break; + case DP_S_FLAGS: + switch (ch) { + case '-': + flags |= DP_F_MINUS; + ch = *format++; + break; + case '+': + flags |= DP_F_PLUS; + ch = *format++; + break; + case ' ': + flags |= DP_F_SPACE; + ch = *format++; + break; + case '#': + flags |= DP_F_NUM; + ch = *format++; + break; + case '0': + flags |= DP_F_ZERO; + ch = *format++; + break; + default: + state = DP_S_MIN; + break; + } + break; + case DP_S_MIN: + if (isdigit((unsigned char)ch)) { + min = 10*min + char_to_int (ch); + ch = *format++; + } else if (ch == '*') { + min = va_arg (args, int); + ch = *format++; + state = DP_S_DOT; + } else { + state = DP_S_DOT; + } + break; + case DP_S_DOT: + if (ch == '.') { + state = DP_S_MAX; + ch = *format++; + } else { + state = DP_S_MOD; + } + break; + case DP_S_MAX: + if (isdigit((unsigned char)ch)) { + if (max < 0) + max = 0; + max = 10*max + char_to_int (ch); + ch = *format++; + } else if (ch == '*') { + max = va_arg (args, int); + ch = *format++; + state = DP_S_MOD; + } else { + state = DP_S_MOD; + } + break; + case DP_S_MOD: + switch (ch) { + case 'h': + cflags = DP_C_SHORT; + ch = *format++; + break; + case 'l': + cflags = DP_C_LONG; + ch = *format++; + if (ch == 'l') { /* It's a long long */ + cflags = DP_C_LLONG; + ch = *format++; + } + break; + case 'L': + cflags = DP_C_LDOUBLE; + ch = *format++; + break; + default: + break; + } + state = DP_S_CONV; + break; + case DP_S_CONV: + switch (ch) { + case 'd': + case 'i': + if (cflags == DP_C_SHORT) + value = va_arg (args, int); + else if (cflags == DP_C_LONG) + value = va_arg (args, long int); + else if (cflags == DP_C_LLONG) + value = va_arg (args, LLONG); + else + value = va_arg (args, int); + fmtint (buffer, &currlen, maxlen, value, 10, min, max, flags); + break; + case 'o': + flags |= DP_F_UNSIGNED; + if (cflags == DP_C_SHORT) + value = va_arg (args, unsigned int); + else if (cflags == DP_C_LONG) + value = (long)va_arg (args, unsigned long int); + else if (cflags == DP_C_LLONG) + value = (long)va_arg (args, unsigned LLONG); + else + value = (long)va_arg (args, unsigned int); + fmtint (buffer, &currlen, maxlen, value, 8, min, max, flags); + break; + case 'u': + flags |= DP_F_UNSIGNED; + if (cflags == DP_C_SHORT) + value = va_arg (args, unsigned int); + else if (cflags == DP_C_LONG) + value = (long)va_arg (args, unsigned long int); + else if (cflags == DP_C_LLONG) + value = (LLONG)va_arg (args, unsigned LLONG); + else + value = (long)va_arg (args, unsigned int); + fmtint (buffer, &currlen, maxlen, value, 10, min, max, flags); + break; + case 'X': + flags |= DP_F_UP; + case 'x': + flags |= DP_F_UNSIGNED; + if (cflags == DP_C_SHORT) + value = va_arg (args, unsigned int); + else if (cflags == DP_C_LONG) + value = (long)va_arg (args, unsigned long int); + else if (cflags == DP_C_LLONG) + value = (LLONG)va_arg (args, unsigned LLONG); + else + value = (long)va_arg (args, unsigned int); + fmtint (buffer, &currlen, maxlen, value, 16, min, max, flags); + break; + case 'f': + if (cflags == DP_C_LDOUBLE) + fvalue = va_arg (args, LDOUBLE); + else + fvalue = va_arg (args, double); + /* um, floating point? */ + fmtfp (buffer, &currlen, maxlen, fvalue, min, max, flags); + break; + case 'E': + flags |= DP_F_UP; + case 'e': + if (cflags == DP_C_LDOUBLE) + fvalue = va_arg (args, LDOUBLE); + else + fvalue = va_arg (args, double); + break; + case 'G': + flags |= DP_F_UP; + case 'g': + if (cflags == DP_C_LDOUBLE) + fvalue = va_arg (args, LDOUBLE); + else + fvalue = va_arg (args, double); + break; + case 'c': + dopr_outch (buffer, &currlen, maxlen, va_arg (args, int)); + break; + case 's': + strvalue = va_arg (args, char *); + if (!strvalue) strvalue = "(NULL)"; + if (max == -1) { + max = strlen(strvalue); + } + if (min > 0 && max >= 0 && min > max) max = min; + fmtstr (buffer, &currlen, maxlen, strvalue, flags, min, max); + break; + case 'p': + strvalue = va_arg (args, void *); + fmtint (buffer, &currlen, maxlen, (long) strvalue, 16, min, max, flags); + break; + case 'n': + if (cflags == DP_C_SHORT) { + short int *num; + num = va_arg (args, short int *); + *num = currlen; + } else if (cflags == DP_C_LONG) { + long int *num; + num = va_arg (args, long int *); + *num = (long int)currlen; + } else if (cflags == DP_C_LLONG) { + LLONG *num; + num = va_arg (args, LLONG *); + *num = (LLONG)currlen; + } else { + int *num; + num = va_arg (args, int *); + *num = currlen; + } + break; + case '%': + dopr_outch (buffer, &currlen, maxlen, ch); + break; + case 'w': + /* not supported yet, treat as next char */ + ch = *format++; + break; + default: + /* Unknown, skip */ + break; + } + ch = *format++; + state = DP_S_DEFAULT; + flags = cflags = min = 0; + max = -1; + break; + case DP_S_DONE: + break; + default: + /* hmm? */ + break; /* some picky compilers need this */ + } + } + if (maxlen != 0) { + if (currlen < maxlen - 1) + buffer[currlen] = '\0'; + else if (maxlen > 0) + buffer[maxlen - 1] = '\0'; + } + + return currlen; } -#endif -# ifndef luna2 -int -# ifdef __STDC__ -vsnprintf(char *str, size_t count, const char *fmt, va_list args) -#else -vsnprintf(str, count, fmt, args) - char *str; - int count; - char *fmt; - va_list args; -#endif +static void fmtstr(char *buffer, size_t *currlen, size_t maxlen, + char *value, int flags, int min, int max) { - str[0] = 0; - end = str + count - 1; - dopr( str, fmt, args ); - if (count > 0) - end[0] = 0; - return strlen(str); + int padlen, strln; /* amount to pad */ + int cnt = 0; + +#ifdef DEBUG_SNPRINTF + printf("fmtstr min=%d max=%d s=[%s]\n", min, max, value); +#endif + if (value == 0) { + value = "<NULL>"; + } + + for (strln = 0; value[strln]; ++strln); /* strlen */ + padlen = min - strln; + if (padlen < 0) + padlen = 0; + if (flags & DP_F_MINUS) + padlen = -padlen; /* Left Justify */ + + while ((padlen > 0) && (cnt < max)) { + dopr_outch (buffer, currlen, maxlen, ' '); + --padlen; + ++cnt; + } + while (*value && (cnt < max)) { + dopr_outch (buffer, currlen, maxlen, *value++); + ++cnt; + } + while ((padlen < 0) && (cnt < max)) { + dopr_outch (buffer, currlen, maxlen, ' '); + ++padlen; + ++cnt; + } } -/* - * dopr(): poor man's version of doprintf - */ +/* Have to handle DP_F_NUM (ie 0x and 0 alternates) */ + +static void fmtint(char *buffer, size_t *currlen, size_t maxlen, + long value, int base, int min, int max, int flags) +{ + int signvalue = 0; + unsigned long uvalue; + char convert[20]; + int place = 0; + int spadlen = 0; /* amount to space pad */ + int zpadlen = 0; /* amount to zero pad */ + int caps = 0; + + if (max < 0) + max = 0; + + uvalue = value; + + if(!(flags & DP_F_UNSIGNED)) { + if( value < 0 ) { + signvalue = '-'; + uvalue = -value; + } else { + if (flags & DP_F_PLUS) /* Do a sign (+/i) */ + signvalue = '+'; + else if (flags & DP_F_SPACE) + signvalue = ' '; + } + } + + if (flags & DP_F_UP) caps = 1; /* Should characters be upper case? */ -static void fmtstr __P((char *value, int ljust, int len, int zpad, int maxwidth)); -static void fmtnum __P((long value, int base, int dosign, int ljust, int len, int zpad)); -static void dostr __P(( char * , int )); -static char *output; -static void dopr_outch __P(( int c )); + do { + convert[place++] = + (caps? "0123456789ABCDEF":"0123456789abcdef") + [uvalue % (unsigned)base ]; + uvalue = (uvalue / (unsigned)base ); + } while(uvalue && (place < 20)); + if (place == 20) place--; + convert[place] = 0; -static void -# ifdef __STDC__ -dopr(char * buffer, const char * format, va_list args ) -#else -dopr( buffer, format, args ) - char *buffer; - char *format; - va_list args; + zpadlen = max - place; + spadlen = min - MAX (max, place) - (signvalue ? 1 : 0); + if (zpadlen < 0) zpadlen = 0; + if (spadlen < 0) spadlen = 0; + if (flags & DP_F_ZERO) { + zpadlen = MAX(zpadlen, spadlen); + spadlen = 0; + } + if (flags & DP_F_MINUS) + spadlen = -spadlen; /* Left Justifty */ + +#ifdef DEBUG_SNPRINTF + printf("zpad: %d, spad: %d, min: %d, max: %d, place: %d\n", + zpadlen, spadlen, min, max, place); #endif + + /* Spaces */ + while (spadlen > 0) { + dopr_outch (buffer, currlen, maxlen, ' '); + --spadlen; + } + + /* Sign */ + if (signvalue) + dopr_outch (buffer, currlen, maxlen, signvalue); + + /* Zeros */ + if (zpadlen > 0) { + while (zpadlen > 0) { + dopr_outch (buffer, currlen, maxlen, '0'); + --zpadlen; + } + } + + /* Digits */ + while (place > 0) + dopr_outch (buffer, currlen, maxlen, convert[--place]); + + /* Left Justified spaces */ + while (spadlen < 0) { + dopr_outch (buffer, currlen, maxlen, ' '); + ++spadlen; + } +} + +static LDOUBLE abs_val(LDOUBLE value) { - int ch; - long value; - int longflag = 0; - int pointflag = 0; - int maxwidth = 0; - char *strvalue; - int ljust; - int len; - int zpad; - - output = buffer; - while( (ch = *format++) ){ - switch( ch ){ - case '%': - ljust = len = zpad = maxwidth = 0; - longflag = pointflag = 0; - nextch: - ch = *format++; - switch( ch ){ - case 0: - dostr( "**end of format**" , 0); - return; - case '-': ljust = 1; goto nextch; - case '0': /* set zero padding if len not set */ - if(len==0 && !pointflag) zpad = '0'; - case '1': case '2': case '3': - case '4': case '5': case '6': - case '7': case '8': case '9': - if (pointflag) - maxwidth = maxwidth*10 + ch - '0'; - else - len = len*10 + ch - '0'; - goto nextch; - case '*': - if (pointflag) - maxwidth = va_arg( args, int ); - else - len = va_arg( args, int ); - goto nextch; - case '.': pointflag = 1; goto nextch; - case 'l': longflag = 1; goto nextch; - case 'u': case 'U': - /*fmtnum(value,base,dosign,ljust,len,zpad) */ - if( longflag ){ - value = va_arg( args, long ); - } else { - value = va_arg( args, int ); - } - fmtnum( value, 10,0, ljust, len, zpad ); break; - case 'o': case 'O': - /*fmtnum(value,base,dosign,ljust,len,zpad) */ - if( longflag ){ - value = va_arg( args, long ); - } else { - value = va_arg( args, int ); - } - fmtnum( value, 8,0, ljust, len, zpad ); break; - case 'd': case 'D': - if( longflag ){ - value = va_arg( args, long ); - } else { - value = va_arg( args, int ); - } - fmtnum( value, 10,1, ljust, len, zpad ); break; - case 'x': - if( longflag ){ - value = va_arg( args, long ); - } else { - value = va_arg( args, int ); - } - fmtnum( value, 16,0, ljust, len, zpad ); break; - case 'X': - if( longflag ){ - value = va_arg( args, long ); - } else { - value = va_arg( args, int ); - } - fmtnum( value,-16,0, ljust, len, zpad ); break; - case 's': - strvalue = va_arg( args, char *); - if (maxwidth > 0 || !pointflag) { - if (pointflag && len > maxwidth) - len = maxwidth; /* Adjust padding */ - fmtstr( strvalue,ljust,len,zpad, maxwidth); - } - break; - case 'c': - ch = va_arg( args, int ); - dopr_outch( ch ); break; - case '%': dopr_outch( ch ); continue; - default: - dostr( "???????" , 0); - } - break; - default: - dopr_outch( ch ); - break; - } - } - *output = 0; + LDOUBLE result = value; + + if (value < 0) + result = -value; + + return result; } -static void -fmtstr( value, ljust, len, zpad, maxwidth ) - char *value; - int ljust, len, zpad, maxwidth; +static LDOUBLE POW10(int exp) { - int padlen, strlen; /* amount to pad */ - - if( value == 0 ){ - value = "<NULL>"; - } - for( strlen = 0; value[strlen]; ++ strlen ); /* strlen */ - if (strlen > maxwidth && maxwidth) - strlen = maxwidth; - padlen = len - strlen; - if( padlen < 0 ) padlen = 0; - if( ljust ) padlen = -padlen; - while( padlen > 0 ) { - dopr_outch( ' ' ); - --padlen; - } - dostr( value, maxwidth ); - while( padlen < 0 ) { - dopr_outch( ' ' ); - ++padlen; - } + LDOUBLE result = 1; + + while (exp) { + result *= 10; + exp--; + } + + return result; } -static void -fmtnum( value, base, dosign, ljust, len, zpad ) - long value; - int base, dosign, ljust, len, zpad; +static LLONG ROUND(LDOUBLE value) { - int signvalue = 0; - unsigned long uvalue; - char convert[20]; - int place = 0; - int padlen = 0; /* amount to pad */ - int caps = 0; - - /* DEBUGP(("value 0x%x, base %d, dosign %d, ljust %d, len %d, zpad %d\n", - value, base, dosign, ljust, len, zpad )); */ - uvalue = value; - if( dosign ){ - if( value < 0 ) { - signvalue = '-'; - uvalue = -value; - } - } - if( base < 0 ){ - caps = 1; - base = -base; - } - do{ - convert[place++] = - (caps? "0123456789ABCDEF":"0123456789abcdef") - [uvalue % (unsigned)base ]; - uvalue = (uvalue / (unsigned)base ); - }while(uvalue); - convert[place] = 0; - padlen = len - place; - if( padlen < 0 ) padlen = 0; - if( ljust ) padlen = -padlen; - /* DEBUGP(( "str '%s', place %d, sign %c, padlen %d\n", - convert,place,signvalue,padlen)); */ - if( zpad && padlen > 0 ){ - if( signvalue ){ - dopr_outch( signvalue ); - --padlen; - signvalue = 0; - } - while( padlen > 0 ){ - dopr_outch( zpad ); - --padlen; - } - } - while( padlen > 0 ) { - dopr_outch( ' ' ); - --padlen; - } - if( signvalue ) dopr_outch( signvalue ); - while( place > 0 ) dopr_outch( convert[--place] ); - while( padlen < 0 ){ - dopr_outch( ' ' ); - ++padlen; - } + LLONG intpart; + + intpart = (LLONG)value; + value = value - intpart; + if (value >= 0.5) intpart++; + + return intpart; } -static void -dostr( str , cut) - char *str; - int cut; +/* a replacement for modf that doesn't need the math library. Should + be portable, but slow */ +static double my_modf(double x0, double *iptr) { - if (cut) { - while(*str && cut-- > 0) dopr_outch(*str++); - } else { - while(*str) dopr_outch(*str++); - } + int i; + long l; + double x = x0; + double f = 1.0; + + for (i=0;i<100;i++) { + l = (long)x; + if (l <= (x+1) && l >= (x-1)) break; + x *= 0.1; + f *= 10.0; + } + + if (i == 100) { + /* yikes! the number is beyond what we can handle. What do we do? */ + (*iptr) = 0; + return 0; + } + + if (i != 0) { + double i2; + double ret; + + ret = my_modf(x0-l*f, &i2); + (*iptr) = l*f + i2; + return ret; + } + + (*iptr) = l; + return x - (*iptr); } -static void -dopr_outch( c ) - int c; + +static void fmtfp (char *buffer, size_t *currlen, size_t maxlen, + LDOUBLE fvalue, int min, int max, int flags) { + int signvalue = 0; + double ufvalue; + char iconvert[311]; + char fconvert[311]; + int iplace = 0; + int fplace = 0; + int padlen = 0; /* amount to pad */ + int zpadlen = 0; + int caps = 0; + int index; + double intpart; + double fracpart; + double temp; + + /* + * AIX manpage says the default is 0, but Solaris says the default + * is 6, and sprintf on AIX defaults to 6 + */ + if (max < 0) + max = 6; + + ufvalue = abs_val (fvalue); + + if (fvalue < 0) { + signvalue = '-'; + } else { + if (flags & DP_F_PLUS) { /* Do a sign (+/i) */ + signvalue = '+'; + } else { + if (flags & DP_F_SPACE) + signvalue = ' '; + } + } + #if 0 - if( iscntrl(c) && c != '\n' && c != '\t' ){ - c = '@' + (c & 0x1F); - if( end == 0 || output < end ) - *output++ = '^'; - } + if (flags & DP_F_UP) caps = 1; /* Should characters be upper case? */ #endif - if( end == 0 || output < end ) - *output++ = c; + +#if 0 + if (max == 0) ufvalue += 0.5; /* if max = 0 we must round */ +#endif + + /* + * Sorry, we only support 16 digits past the decimal because of our + * conversion method + */ + if (max > 16) + max = 16; + + /* We "cheat" by converting the fractional part to integer by + * multiplying by a factor of 10 + */ + + temp = ufvalue; + my_modf(temp, &intpart); + + fracpart = ROUND((POW10(max)) * (ufvalue - intpart)); + + if (fracpart >= POW10(max)) { + intpart++; + fracpart -= POW10(max); + } + + + /* Convert integer part */ + do { + temp = intpart*0.1; + my_modf(temp, &intpart); + index = (int) ((temp -intpart +0.05)* 10.0); + /* index = (int) (((double)(temp*0.1) -intpart +0.05) *10.0); */ + /* printf ("%llf, %f, %x\n", temp, intpart, index); */ + iconvert[iplace++] = + (caps? "0123456789ABCDEF":"0123456789abcdef")[index]; + } while (intpart && (iplace < 311)); + if (iplace == 311) iplace--; + iconvert[iplace] = 0; + + /* Convert fractional part */ + if (fracpart) + { + do { + temp = fracpart*0.1; + my_modf(temp, &fracpart); + index = (int) ((temp -fracpart +0.05)* 10.0); + /* index = (int) ((((temp/10) -fracpart) +0.05) *10); */ + /* printf ("%lf, %lf, %ld\n", temp, fracpart, index); */ + fconvert[fplace++] = + (caps? "0123456789ABCDEF":"0123456789abcdef")[index]; + } while(fracpart && (fplace < 311)); + if (fplace == 311) fplace--; + } + fconvert[fplace] = 0; + + /* -1 for decimal point, another -1 if we are printing a sign */ + padlen = min - iplace - max - 1 - ((signvalue) ? 1 : 0); + zpadlen = max - fplace; + if (zpadlen < 0) zpadlen = 0; + if (padlen < 0) + padlen = 0; + if (flags & DP_F_MINUS) + padlen = -padlen; /* Left Justifty */ + + if ((flags & DP_F_ZERO) && (padlen > 0)) { + if (signvalue) { + dopr_outch (buffer, currlen, maxlen, signvalue); + --padlen; + signvalue = 0; + } + while (padlen > 0) { + dopr_outch (buffer, currlen, maxlen, '0'); + --padlen; + } + } + while (padlen > 0) { + dopr_outch (buffer, currlen, maxlen, ' '); + --padlen; + } + if (signvalue) + dopr_outch (buffer, currlen, maxlen, signvalue); + + while (iplace > 0) + dopr_outch (buffer, currlen, maxlen, iconvert[--iplace]); + +#ifdef DEBUG_SNPRINTF + printf("fmtfp: fplace=%d zpadlen=%d\n", fplace, zpadlen); +#endif + + /* + * Decimal point. This should probably use locale to find the correct + * char to print out. + */ + if (max > 0) { + dopr_outch (buffer, currlen, maxlen, '.'); + + while (zpadlen > 0) { + dopr_outch (buffer, currlen, maxlen, '0'); + --zpadlen; + } + + while (fplace > 0) + dopr_outch (buffer, currlen, maxlen, fconvert[--fplace]); + } + + while (padlen < 0) { + dopr_outch (buffer, currlen, maxlen, ' '); + ++padlen; + } } -# endif /* !luna2 */ +static void dopr_outch(char *buffer, size_t *currlen, size_t maxlen, char c) +{ + if (*currlen < maxlen) { + buffer[(*currlen)] = c; + } + (*currlen)++; +} -#endif /* HAVE_SNPRINTF */ +/* yes this really must be a ||. Don't muck with this (tridge) */ +#if !defined(HAVE_VSNPRINTF) || !defined(HAVE_C99_VSNPRINTF) + int vsnprintf (char *str, size_t count, const char *fmt, va_list args) +{ + return dopr(str, count, fmt, args); +} +#endif + +/* yes this really must be a ||. Don't muck wiith this (tridge) + * + * The logic for these two is that we need our own definition if the + * OS *either* has no definition of *sprintf, or if it does have one + * that doesn't work properly according to the autoconf test. Perhaps + * these should really be smb_snprintf to avoid conflicts with buggy + * linkers? -- mbp + */ +#if !defined(HAVE_SNPRINTF) || !defined(HAVE_C99_SNPRINTF) + int snprintf(char *str,size_t count,const char *fmt,...) +{ + size_t ret; + va_list ap; + + va_start(ap, fmt); + ret = vsnprintf(str, count, fmt, ap); + va_end(ap); + return ret; +} +#endif + +#endif + +#ifndef HAVE_VASPRINTF + int vasprintf(char **ptr, const char *format, va_list ap) +{ + int ret; + va_list ap2; + + VA_COPY(ap2, ap); + + ret = vsnprintf(NULL, 0, format, ap2); + if (ret <= 0) return ret; + + (*ptr) = (char *)malloc(ret+1); + if (!*ptr) return -1; + + VA_COPY(ap2, ap); + + ret = vsnprintf(*ptr, ret+1, format, ap2); + + return ret; +} +#endif + + +#ifndef HAVE_ASPRINTF + int asprintf(char **ptr, const char *format, ...) +{ + va_list ap; + int ret; + + *ptr = NULL; + va_start(ap, format); + ret = vasprintf(ptr, format, ap); + va_end(ap); + + return ret; +} +#endif + +#ifdef TEST_SNPRINTF + + int sprintf(char *str,const char *fmt,...); + + int main (void) +{ + char buf1[1024]; + char buf2[1024]; + char *fp_fmt[] = { + "%1.1f", + "%-1.5f", + "%1.5f", + "%123.9f", + "%10.5f", + "% 10.5f", + "%+22.9f", + "%+4.9f", + "%01.3f", + "%4f", + "%3.1f", + "%3.2f", + "%.0f", + "%f", + "-16.16f", + NULL + }; + double fp_nums[] = { 6442452944.1234, -1.5, 134.21, 91340.2, 341.1234, 0203.9, 0.96, 0.996, + 0.9996, 1.996, 4.136, 5.030201, 0}; + char *int_fmt[] = { + "%-1.5d", + "%1.5d", + "%123.9d", + "%5.5d", + "%10.5d", + "% 10.5d", + "%+22.33d", + "%01.3d", + "%4d", + "%d", + NULL + }; + long int_nums[] = { -1, 134, 91340, 341, 0203, 0}; + char *str_fmt[] = { + "10.5s", + "5.10s", + "10.1s", + "0.10s", + "10.0s", + "1.10s", + "%s", + "%.1s", + "%.10s", + "%10s", + NULL + }; + char *str_vals[] = {"hello", "a", "", "a longer string", NULL}; + int x, y; + int fail = 0; + int num = 0; + + printf ("Testing snprintf format codes against system sprintf...\n"); + + for (x = 0; fp_fmt[x] ; x++) { + for (y = 0; fp_nums[y] != 0 ; y++) { + int l1 = snprintf(NULL, 0, fp_fmt[x], fp_nums[y]); + int l2 = snprintf(buf1, sizeof(buf1), fp_fmt[x], fp_nums[y]); + sprintf (buf2, fp_fmt[x], fp_nums[y]); + if (strcmp (buf1, buf2)) { + printf("snprintf doesn't match Format: %s\n\tsnprintf = [%s]\n\t sprintf = [%s]\n", + fp_fmt[x], buf1, buf2); + fail++; + } + if (l1 != l2) { + printf("snprintf l1 != l2 (%d %d) %s\n", l1, l2, fp_fmt[x]); + fail++; + } + num++; + } + } + + for (x = 0; int_fmt[x] ; x++) { + for (y = 0; int_nums[y] != 0 ; y++) { + int l1 = snprintf(NULL, 0, int_fmt[x], int_nums[y]); + int l2 = snprintf(buf1, sizeof(buf1), int_fmt[x], int_nums[y]); + sprintf (buf2, int_fmt[x], int_nums[y]); + if (strcmp (buf1, buf2)) { + printf("snprintf doesn't match Format: %s\n\tsnprintf = [%s]\n\t sprintf = [%s]\n", + int_fmt[x], buf1, buf2); + fail++; + } + if (l1 != l2) { + printf("snprintf l1 != l2 (%d %d) %s\n", l1, l2, int_fmt[x]); + fail++; + } + num++; + } + } + + for (x = 0; str_fmt[x] ; x++) { + for (y = 0; str_vals[y] != 0 ; y++) { + int l1 = snprintf(NULL, 0, str_fmt[x], str_vals[y]); + int l2 = snprintf(buf1, sizeof(buf1), str_fmt[x], str_vals[y]); + sprintf (buf2, str_fmt[x], str_vals[y]); + if (strcmp (buf1, buf2)) { + printf("snprintf doesn't match Format: %s\n\tsnprintf = [%s]\n\t sprintf = [%s]\n", + str_fmt[x], buf1, buf2); + fail++; + } + if (l1 != l2) { + printf("snprintf l1 != l2 (%d %d) %s\n", l1, l2, str_fmt[x]); + fail++; + } + num++; + } + } + + printf ("%d tests failed out of %d.\n", fail, num); + + printf("seeing how many digits we support\n"); + { + double v0 = 0.12345678901234567890123456789012345678901; + for (x=0; x<100; x++) { + double p = pow(10, x); + double r = v0*p; + snprintf(buf1, sizeof(buf1), "%1.1f", r); + sprintf(buf2, "%1.1f", r); + if (strcmp(buf1, buf2)) { + printf("we seem to support %d digits\n", x-1); + break; + } + } + } + + return 0; +} +#endif /* SNPRINTF_TEST */ |