diff options
| -rw-r--r-- | source3/lib/snprintf.c | 1448 |
1 files changed, 714 insertions, 734 deletions
diff --git a/source3/lib/snprintf.c b/source3/lib/snprintf.c index 1a8c10afc4..18afb2f793 100644 --- a/source3/lib/snprintf.c +++ b/source3/lib/snprintf.c @@ -49,41 +49,34 @@ * 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 + * **************************************************************/ +#ifndef NO_CONFIG_H /* for some tests */ #include "config.h" +#endif +#ifdef HAVE_STRING_H #include <string.h> -# include <ctype.h> -#include <sys/types.h> - -#if !defined(HAVE_SNPRINTF) || !defined(HAVE_VSNPRINTF) - -/* Define this as a fall through, HAVE_STDARG_H is probably already set */ - -#define HAVE_VARARGS_H - -/* varargs declarations: */ +#endif -#if defined(HAVE_STDARG_H) -# include <stdarg.h> -# define HAVE_STDARGS /* let's hope that works everywhere (mj) */ -# define VA_LOCAL_DECL va_list ap -# define VA_START(f) va_start(ap, f) -# define VA_SHIFT(v,t) ; /* no-op for ANSI */ -# define VA_END va_end(ap) -#else -# if defined(HAVE_VARARGS_H) -# include <varargs.h> -# undef HAVE_STDARGS -# define VA_LOCAL_DECL va_list ap -# define VA_START(f) va_start(ap) /* f is ignored! */ -# define VA_SHIFT(v,t) v = va_arg(ap,t) -# define VA_END va_end(ap) -# else -/*XX ** NO VARARGS ** XX*/ -# endif +#ifdef HAVE_STRINGS_H +#include <strings.h> +#endif +#ifdef HAVE_CTYPE_H +#include <ctype.h> #endif +#include <sys/types.h> +#include <stdarg.h> +#include <math.h> +#ifdef HAVE_STDLIB_H +#include <stdlib.h> +#endif + +#if !defined(HAVE_SNPRINTF) || !defined(HAVE_VSNPRINTF) || !defined(HAVE_C99_VSNPRINTF) #ifdef HAVE_LONG_DOUBLE #define LDOUBLE long double @@ -97,18 +90,15 @@ #define LLONG long #endif -/*int snprintf (char *str, size_t count, const char *fmt, ...);*/ -/*int vsnprintf (char *str, size_t count, const char *fmt, va_list arg);*/ - -static void dopr (char *buffer, size_t maxlen, const char *format, - va_list args); -static void fmtstr (char *buffer, size_t *currlen, size_t maxlen, +static size_t dopr(char *buffer, size_t maxlen, const char *format, + va_list args); +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, +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, +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 ); +static void dopr_outch(char *buffer, size_t *currlen, size_t maxlen, char c); /* * dopr(): poor man's version of doprintf @@ -140,774 +130,764 @@ static void dopr_outch (char *buffer, size_t *currlen, size_t maxlen, char c ); #define DP_C_LLONG 4 #define char_to_int(p) ((p)- '0') +#ifndef MAX #define MAX(p,q) (((p) >= (q)) ? (p) : (q)) +#endif -static void dopr (char *buffer, size_t maxlen, const char *format, va_list args) +static size_t dopr(char *buffer, size_t maxlen, const char *format, va_list args) { - char ch; - LLONG value; - LDOUBLE fvalue; - char *strvalue; - int min; - int max; - int state; - int flags; - int cflags; - size_t currlen; - - state = DP_S_DEFAULT; - currlen = flags = cflags = min = 0; - max = -1; - ch = *format++; - - while (state != DP_S_DONE) - { - if ((ch == '\0') || (currlen >= maxlen)) - state = DP_S_DONE; - - 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; + char ch; + LLONG value; + LDOUBLE fvalue; + char *strvalue; + int min; + int max; + int state; + int flags; + int cflags; + size_t currlen; + + state = DP_S_DEFAULT; + currlen = flags = cflags = min = 0; + max = -1; 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++; + + while (state != DP_S_DONE) { + if (ch == '\0') + state = DP_S_DONE; + + 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 (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 */ + } } - 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, short 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 short 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 short 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 short 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 (max < 0) - max = maxlen; /* ie, no max */ - 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 (currlen < maxlen - 1) - buffer[currlen] = '\0'; - else - buffer[maxlen - 1] = '\0'; + if (maxlen != 0) { + if (currlen < maxlen - 1) + buffer[currlen] = '\0'; + else if (maxlen > 0) + buffer[maxlen - 1] = '\0'; + } + + return currlen; } -static void fmtstr (char *buffer, size_t *currlen, size_t maxlen, +static void fmtstr(char *buffer, size_t *currlen, size_t maxlen, char *value, int flags, int min, int max) { - int padlen, strln; /* amount to pad */ - int cnt = 0; - - 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; - } + 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; + } } /* Have to handle DP_F_NUM (ie 0x and 0 alternates) */ -static void fmtint (char *buffer, size_t *currlen, size_t maxlen, +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 = ' '; - } + 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? */ - - do { - convert[place++] = - (caps? "0123456789ABCDEF":"0123456789abcdef") - [uvalue % (unsigned)base ]; - uvalue = (uvalue / (unsigned)base ); - } while(uvalue && (place < 20)); - if (place == 20) place--; - convert[place] = 0; - - 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 */ + if (flags & DP_F_UP) caps = 1; /* Should characters be upper case? */ + + do { + convert[place++] = + (caps? "0123456789ABCDEF":"0123456789abcdef") + [uvalue % (unsigned)base ]; + uvalue = (uvalue / (unsigned)base ); + } while(uvalue && (place < 20)); + if (place == 20) place--; + convert[place] = 0; + + 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); + 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]); + /* 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; - } + /* Left Justified spaces */ + while (spadlen < 0) { + dopr_outch (buffer, currlen, maxlen, ' '); + ++spadlen; + } } -static LDOUBLE abs_val (LDOUBLE value) +static LDOUBLE abs_val(LDOUBLE value) { - LDOUBLE result = value; - - if (value < 0) - result = -value; + LDOUBLE result = value; - return result; + if (value < 0) + result = -value; + + return result; } -static LDOUBLE pow10 (int exp) +static LDOUBLE POW10(int exp) { - LDOUBLE result = 1; - - while (exp) - { - result *= 10; - exp--; - } + LDOUBLE result = 1; + + while (exp) { + result *= 10; + exp--; + } - return result; + return result; } -static long round (LDOUBLE value) +static LLONG ROUND(LDOUBLE value) { - long intpart; + LLONG intpart; - intpart = (long)value; - value = value - intpart; - if (value >= 0.5) - intpart++; - - return intpart; + intpart = (LLONG)value; + value = value - intpart; + if (value >= 0.5) intpart++; + + return intpart; } static void fmtfp (char *buffer, size_t *currlen, size_t maxlen, LDOUBLE fvalue, int min, int max, int flags) { - int signvalue = 0; - LDOUBLE ufvalue; -#ifndef HAVE_FCVT - char iconvert[20]; - char fconvert[20]; -#else - char iconvert[311]; - char fconvert[311]; - char *result; - int dec_pt, sig; - int r_length; -# ifdef HAVE_FCVTL - extern char *fcvtl(long double value, int ndigit, int *decpt, int *sign); -# else - extern char *fcvt(double value, int ndigit, int *decpt, int *sign); -# endif -#endif - int iplace = 0; - int fplace = 0; - int padlen = 0; /* amount to pad */ - int zpadlen = 0; - int caps = 0; - long intpart; - long fracpart; + 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 = ' '; + /* + * 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 (flags & DP_F_UP) caps = 1; /* Should characters be upper case? */ + if (flags & DP_F_UP) caps = 1; /* Should characters be upper case? */ #endif -#ifndef HAVE_FCVT - intpart = (long)ufvalue; - - /* - * Sorry, we only support 9 digits past the decimal because of our - * conversion method - */ - if (max > 9) - max = 9; - - /* We "cheat" by converting the fractional part to integer by - * multiplying by a factor of 10 - */ - fracpart = round ((pow10 (max)) * (ufvalue - intpart)); - - if (fracpart >= pow10 (max)) - { - intpart++; - fracpart -= pow10 (max); - } - -#ifdef DEBUG_SNPRINTF - printf("fmtfp: %g %d.%d min=%d max=%d\n", - (double)fvalue, intpart, fracpart, min, max); +#if 0 + if (max == 0) ufvalue += 0.5; /* if max = 0 we must round */ #endif - /* Convert integer part */ - do { - iconvert[iplace++] = - (caps? "0123456789ABCDEF":"0123456789abcdef")[intpart % 10]; - intpart = (intpart / 10); - } while(intpart && (iplace < 20)); - if (iplace == 20) iplace--; - iconvert[iplace] = 0; - - /* Convert fractional part */ - do { - fconvert[fplace++] = - (caps? "0123456789ABCDEF":"0123456789abcdef")[fracpart % 10]; - fracpart = (fracpart / 10); - } while(fracpart && (fplace < 20)); - if (fplace == 20) fplace--; - fconvert[fplace] = 0; -#else /* use fcvt() */ - if (max > 310) - max = 310; -# ifdef HAVE_FCVTL - result = fcvtl(ufvalue, max, &dec_pt, &sig); -# else - result = fcvt(ufvalue, max, &dec_pt, &sig); -# endif - - r_length = strlen(result); - - /* - * Fix broken fcvt implementation returns.. - */ - - if (r_length == 0) - { - result[0] = '0'; - result[1] = '\0'; - r_length = 1; - } - - if ( r_length < dec_pt ) - dec_pt = r_length; - - if (dec_pt <= 0) { - iplace = 1; - iconvert[0] = '0'; - iconvert[1] = '\0'; - - fplace = 0; - - while(r_length) - fconvert[fplace++] = result[--r_length]; - - while ((dec_pt < 0) && (fplace < max)) { - fconvert[fplace++] = '0'; - dec_pt++; + /* + * 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; + modf(temp, &intpart); + + fracpart = ROUND((POW10(max)) * (ufvalue - intpart)); + + if (fracpart >= POW10(max)) { + intpart++; + fracpart -= POW10(max); } - } else { - int c; - iplace=0; - for(c=dec_pt; c; iconvert[iplace++] = result[--c]) - ; - iconvert[iplace] = '\0'; - result += dec_pt; - fplace = 0; - - for(c=(r_length-dec_pt); c; fconvert[fplace++] = result[--c]) - ; - } -#endif /* fcvt */ + /* Convert integer part */ + do { + temp = intpart; + modf (intpart*0.1, &intpart); + temp = temp*0.1; + 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; + modf (fracpart*0.1, &fracpart); + temp = temp*0.1; + 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]); - + /* -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); + 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 (fplace > 0) - dopr_outch (buffer, currlen, maxlen, fconvert[--fplace]); - } - - while (zpadlen > 0) - { - dopr_outch (buffer, currlen, maxlen, '0'); - --zpadlen; - } - - while (padlen < 0) - { - dopr_outch (buffer, currlen, maxlen, ' '); - ++padlen; - } + /* + * Decimal point. This should probably use locale to find the correct + * char to print out. + */ + if (max > 0) { + dopr_outch (buffer, currlen, maxlen, '.'); + + while (fplace > 0) + dopr_outch (buffer, currlen, maxlen, fconvert[--fplace]); + } + + while (zpadlen > 0) { + dopr_outch (buffer, currlen, maxlen, '0'); + --zpadlen; + } + + while (padlen < 0) { + dopr_outch (buffer, currlen, maxlen, ' '); + ++padlen; + } } -static void dopr_outch (char *buffer, size_t *currlen, size_t maxlen, char c) +static void dopr_outch(char *buffer, size_t *currlen, size_t maxlen, char c) { - if (*currlen < maxlen) - buffer[(*currlen)++] = c; + if (*currlen < maxlen) { + buffer[(*currlen)] = c; + } + (*currlen)++; } -#endif /* !defined(HAVE_SNPRINTF) || !defined(HAVE_VSNPRINTF) */ -#ifndef HAVE_VSNPRINTF +#if !defined(HAVE_VSNPRINTF) || !defined(HAVE_C99_VSNPRINTF) int vsnprintf (char *str, size_t count, const char *fmt, va_list args) { - str[0] = 0; - dopr(str, count, fmt, args); - return(strlen(str)); + return dopr(str, count, fmt, args); } -#endif /* !HAVE_VSNPRINTF */ - -#if 0 /* DONT USE SNPRINTF !!! */ -#ifndef HAVE_SNPRINTF -/* VARARGS3 */ -#ifdef HAVE_STDARGS - int snprintf (char *str,size_t count,const char *fmt,...) -#else - int snprintf (va_alist) va_dcl #endif + +#if !defined(HAVE_SNPRINTF) || !defined(HAVE_C99_VSNPRINTF) + int snprintf(char *str,size_t count,const char *fmt,...) { -#ifndef HAVE_STDARGS - char *str; - size_t count; - char *fmt; -#endif - VA_LOCAL_DECL; + size_t ret; + va_list ap; - VA_START (fmt); - VA_SHIFT (str, char *); - VA_SHIFT (count, size_t ); - VA_SHIFT (fmt, char *); - (void) vsnprintf(str, count, fmt, ap); - VA_END; - return(strlen(str)); + va_start(ap, fmt); + ret = vsnprintf(str, count, fmt, ap); + va_end(ap); + return ret; } #endif #else - /* keep compilers happy about empty files */ - void dummy_snprintf(void) {} -#endif /* !HAVE_SNPRINTF */ + /* make the compiler happy with an empty file */ + void dummy_snprintf(void); +#endif -#ifdef TEST_SNPRINTF -#ifndef LONG_STRING -#define LONG_STRING 1024 + +#ifndef HAVE_ASPRINTF + char *asprintf(const char *format, ...) +{ + va_list ap; + int ret; + char *str; + + va_start(ap, format); + ret = vsnprintf(NULL, 0, format, ap); + va_end(ap); + + if (ret == -1) return NULL; + + va_start(ap, format); + str = (char *)malloc(ret+1); + if (!str) return NULL; + ret = vsnprintf(str, ret+1, format, ap); + va_end(ap); + + return str; +} #endif + +#ifdef TEST_SNPRINTF + + int sprintf(char *str,const char *fmt,...); + int main (void) { - char buf1[LONG_STRING]; - char buf2[LONG_STRING]; - char *fp_fmt[] = { - "%-1.5f", - "%1.5f", - "%123.9f", - "%10.5f", - "% 10.5f", - "%+22.9f", - "%+4.9f", - "%01.3f", - "%4f", - "%3.1f", - "%3.2f", - "%.0f", - "%.1f", - NULL - }; - double fp_nums[] = { -1.5, 134.21, 91340.2, 341.1234, 0203.9, 0.96, 0.996, - 0.9996, 1.996, 4.136, 6442452944.1234, 0}; - char *int_fmt[] = { - "%-1.5d", - "%1.5d", - "%123.9d", - "%5.5d", - "%10.5d", - "% 10.5d", - "%+22.33d", - "%01.3d", - "%4d", - NULL - }; - long int_nums[] = { -1, 134, 91340, 341, 0203, 0}; - int x, y; - int fail = 0; - int num = 0; - - printf ("Testing snprintf format codes against system sprintf...\n"); - - for (x = 0; fp_fmt[x] != NULL ; x++) - for (y = 0; fp_nums[y] != 0 ; y++) - { - 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\tsprintf = %s\n", - fp_fmt[x], buf1, buf2); - fail++; - } - num++; - } - - for (x = 0; int_fmt[x] != NULL ; x++) - for (y = 0; int_nums[y] != 0 ; y++) - { - 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\tsprintf = %s\n", - int_fmt[x], buf1, buf2); - fail++; - } - num++; - } - printf ("%d tests failed out of %d.\n", fail, num); + 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, 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++) { + snprintf(buf1, sizeof(buf1), "%1.1f", v0*pow(10, x)); + sprintf(buf2, "%1.1f", v0*pow(10, x)); + if (strcmp(buf1, buf2)) { + printf("we seem to support %d digits\n", x-1); + break; + } + } + } + + return 0; } #endif /* SNPRINTF_TEST */ - |