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-rw-r--r--lib/sh/snprintf.c2221
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diff --git a/lib/sh/snprintf.c b/lib/sh/snprintf.c
new file mode 100644
index 0000000..406a3a5
--- /dev/null
+++ b/lib/sh/snprintf.c
@@ -0,0 +1,2221 @@
+/* snprintf - formatted output to strings, with bounds checking and allocation */
+
+/*
+ build a test version with
+ gcc -g -DDRIVER -I../.. -I../../include -o test-snprintf snprintf.c fmtu*long.o
+*/
+
+/*
+ Unix snprintf implementation.
+ derived from inetutils/libinetutils/snprintf.c Version 1.1
+
+ Copyright (C) 2001-2020 Free Software Foundation, Inc.
+
+ This file is part of GNU Bash, the Bourne Again SHell.
+
+ Bash is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ Bash is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with Bash. If not, see <http://www.gnu.org/licenses/>.
+
+ Original (pre-bash) Revision History:
+
+ 1.1:
+ * added changes from Miles Bader
+ * corrected a bug with %f
+ * added support for %#g
+ * added more comments :-)
+ 1.0:
+ * supporting must ANSI syntaxic_sugars
+ 0.0:
+ * support %s %c %d
+
+ THANKS(for the patches and ideas):
+ Miles Bader
+ Cyrille Rustom
+ Jacek Slabocewiz
+ Mike Parker(mouse)
+
+*/
+
+/*
+ * Currently doesn't handle (and bash/readline doesn't use):
+ * * *M$ width, precision specifications
+ * * %N$ numbered argument conversions
+ * * support for `F' is imperfect with ldfallback(), since underlying
+ * printf may not handle it -- should ideally have another autoconf test
+ */
+
+#define FLOATING_POINT
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+/* GCC 4.2 on Snow Leopard doesn't like the snprintf prototype */
+#if defined(DEBUG) && !defined (MACOSX)
+# undef HAVE_SNPRINTF
+# undef HAVE_ASPRINTF
+
+# define HAVE_SNPRINTF 0
+# define HAVE_ASPRINTF 0
+#endif
+
+#if defined(DRIVER) && !defined(HAVE_CONFIG_H)
+#define HAVE_LONG_LONG
+#define HAVE_LONG_DOUBLE
+#ifdef __linux__
+#define HAVE_PRINTF_A_FORMAT
+#endif
+#define HAVE_ISINF_IN_LIBC
+#define HAVE_ISNAN_IN_LIBC
+#define PREFER_STDARG
+#define HAVE_STRINGIZE
+#define HAVE_LIMITS_H
+#define HAVE_STDDEF_H
+#define HAVE_LOCALE_H
+#define intmax_t long
+#endif
+
+#if !HAVE_SNPRINTF || !HAVE_ASPRINTF
+
+#include <bashtypes.h>
+
+#if defined(PREFER_STDARG)
+# include <stdarg.h>
+#else
+# include <varargs.h>
+#endif
+
+#ifdef HAVE_LIMITS_H
+# include <limits.h>
+#endif
+#include <bashansi.h>
+#ifdef HAVE_STDDEF_H
+# include <stddef.h>
+#endif
+#include <chartypes.h>
+
+#ifdef HAVE_STDINT_H
+# include <stdint.h>
+#endif
+
+#ifdef FLOATING_POINT
+# include <float.h> /* for manifest constants */
+# include <stdio.h> /* for sprintf */
+#endif
+
+#include <typemax.h>
+
+#ifdef HAVE_LOCALE_H
+# include <locale.h>
+#endif
+
+#include "stdc.h"
+#include <shmbutil.h>
+
+#ifndef DRIVER
+# include "shell.h"
+#else
+# define FL_PREFIX 0x01 /* add 0x, 0X, or 0 prefix as appropriate */
+# define FL_ADDBASE 0x02 /* add base# prefix to converted value */
+# define FL_HEXUPPER 0x04 /* use uppercase when converting to hex */
+# define FL_UNSIGNED 0x08 /* don't add any sign */
+extern char *fmtulong PARAMS((unsigned long int, int, char *, size_t, int));
+extern char *fmtullong PARAMS((unsigned long long int, int, char *, size_t, int));
+#endif
+
+#ifndef FREE
+# define FREE(x) if (x) free (x)
+#endif
+
+/* Bound on length of the string representing an integer value of type T.
+ Subtract one for the sign bit if T is signed;
+ 302 / 1000 is log10 (2) rounded up;
+ add one for integer division truncation;
+ add one more for a minus sign if t is signed. */
+#ifndef INT_STRLEN_BOUND
+#define INT_STRLEN_BOUND(t) \
+ ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 1000 \
+ + 1 + TYPE_SIGNED (t))
+#endif
+
+/* conversion flags */
+#define PF_ALTFORM 0x00001 /* # */
+#define PF_HEXPREFIX 0x00002 /* 0[Xx] */
+#define PF_LADJUST 0x00004 /* - */
+#define PF_ZEROPAD 0x00008 /* 0 */
+#define PF_PLUS 0x00010 /* + */
+#define PF_SPACE 0x00020 /* ' ' */
+#define PF_THOUSANDS 0x00040 /* ' */
+
+#define PF_DOT 0x00080 /* `.precision' */
+#define PF_STAR_P 0x00100 /* `*' after precision */
+#define PF_STAR_W 0x00200 /* `*' before or without precision */
+
+/* length modifiers */
+#define PF_SIGNEDCHAR 0x00400 /* hh */
+#define PF_SHORTINT 0x00800 /* h */
+#define PF_LONGINT 0x01000 /* l */
+#define PF_LONGLONG 0x02000 /* ll */
+#define PF_LONGDBL 0x04000 /* L */
+#define PF_INTMAX_T 0x08000 /* j */
+#define PF_SIZE_T 0x10000 /* z */
+#define PF_PTRDIFF_T 0x20000 /* t */
+
+#define PF_ALLOCBUF 0x40000 /* for asprintf, vasprintf */
+
+#define PFM_SN 0x01 /* snprintf, vsnprintf */
+#define PFM_AS 0x02 /* asprintf, vasprintf */
+
+#define ASBUFSIZE 128
+
+#define x_digs "0123456789abcdef"
+#define X_digs "0123456789ABCDEF"
+
+static char intbuf[INT_STRLEN_BOUND(unsigned long) + 1];
+
+static int decpoint;
+static int thoussep;
+static char *grouping;
+
+/*
+ * For the FLOATING POINT FORMAT :
+ * the challenge was finding a way to
+ * manipulate the Real numbers without having
+ * to resort to mathematical function(it
+ * would require to link with -lm) and not
+ * going down to the bit pattern(not portable)
+ *
+ * so a number, a real is:
+
+ real = integral + fraction
+
+ integral = ... + a(2)*10^2 + a(1)*10^1 + a(0)*10^0
+ fraction = b(1)*10^-1 + b(2)*10^-2 + ...
+
+ where:
+ 0 <= a(i) => 9
+ 0 <= b(i) => 9
+
+ from then it was simple math
+ */
+
+/*
+ * size of the buffer for the integral part
+ * and the fraction part
+ */
+#define MAX_INT 99 + 1 /* 1 for the null */
+#define MAX_FRACT 307 + 1
+
+/*
+ * These functions use static buffers to store the results,
+ * and so are not reentrant
+ */
+#define itoa(n) fmtulong(n, 10, intbuf, sizeof(intbuf), 0);
+#define dtoa(n, p, f) numtoa(n, 10, p, f)
+
+#define SWAP_INT(a,b) {int t; t = (a); (a) = (b); (b) = t;}
+
+#define GETARG(type) (va_arg(args, type))
+
+/* Macros that do proper sign extension and handle length modifiers. Used
+ for the integer conversion specifiers. */
+#define GETSIGNED(p) \
+ (((p)->flags & PF_LONGINT) \
+ ? GETARG (long) \
+ : (((p)->flags & PF_SHORTINT) ? (long)(short)GETARG (int) \
+ : (long)GETARG (int)))
+
+#define GETUNSIGNED(p) \
+ (((p)->flags & PF_LONGINT) \
+ ? GETARG (unsigned long) \
+ : (((p)->flags & PF_SHORTINT) ? (unsigned long)(unsigned short)GETARG (int) \
+ : (unsigned long)GETARG (unsigned int)))
+
+
+#ifdef HAVE_LONG_DOUBLE
+#define GETLDOUBLE(p) GETARG (long double)
+#endif
+#define GETDOUBLE(p) GETARG (double)
+
+#define SET_SIZE_FLAGS(p, type) \
+ if (sizeof (type) > sizeof (int)) \
+ (p)->flags |= PF_LONGINT; \
+ if (sizeof (type) > sizeof (long)) \
+ (p)->flags |= PF_LONGLONG;
+
+/* this struct holds everything we need */
+struct DATA
+{
+ int length;
+ char *base; /* needed for [v]asprintf */
+ char *holder;
+ int counter;
+ const char *pf;
+
+/* FLAGS */
+ int flags;
+ int justify;
+ int width, precision;
+ char pad;
+};
+
+/* the floating point stuff */
+#ifdef FLOATING_POINT
+static double pow_10 PARAMS((int));
+static int log_10 PARAMS((double));
+static double integral PARAMS((double, double *));
+static char *numtoa PARAMS((double, int, int, char **));
+#endif
+
+static void init_data PARAMS((struct DATA *, char *, size_t, const char *, int));
+static void init_conv_flag PARAMS((struct DATA *));
+
+/* for the format */
+#ifdef FLOATING_POINT
+static void floating PARAMS((struct DATA *, double));
+static void exponent PARAMS((struct DATA *, double));
+#endif
+static void number PARAMS((struct DATA *, unsigned long, int));
+#ifdef HAVE_LONG_LONG
+static void lnumber PARAMS((struct DATA *, unsigned long long, int));
+#endif
+static void pointer PARAMS((struct DATA *, unsigned long));
+static void strings PARAMS((struct DATA *, char *));
+
+#ifdef FLOATING_POINT
+# define FALLBACK_FMTSIZE 32
+# define FALLBACK_BASE 4096
+# define LFALLBACK_BASE 5120
+# ifdef HAVE_LONG_DOUBLE
+static void ldfallback PARAMS((struct DATA *, const char *, const char *, long double));
+# endif
+static void dfallback PARAMS((struct DATA *, const char *, const char *, double));
+#endif
+
+static char *groupnum PARAMS((char *));
+
+#if defined (HAVE_LONG_DOUBLE)
+# define LONGDOUBLE long double
+#else
+# define LONGDOUBLE double
+#endif
+
+#ifndef isnan
+ static inline int isnan_f (float x) { return x != x; }
+ static inline int isnan_d (double x) { return x != x; }
+ static inline int isnan_ld (LONGDOUBLE x) { return x != x; }
+ # define isnan(x) \
+ (sizeof (x) == sizeof (LONGDOUBLE) ? isnan_ld (x) \
+ : sizeof (x) == sizeof (double) ? isnan_d (x) \
+ : isnan_f (x))
+#endif
+
+#ifndef isinf
+ static inline int isinf_f (float x) { return !isnan (x) && isnan (x - x); }
+ static inline int isinf_d (double x) { return !isnan (x) && isnan (x - x); }
+ static inline int isinf_ld (LONGDOUBLE x) { return !isnan (x) && isnan (x - x); }
+ # define isinf(x) \
+ (sizeof (x) == sizeof (LONGDOUBLE) ? isinf_ld (x) \
+ : sizeof (x) == sizeof (double) ? isinf_d (x) \
+ : isinf_f (x))
+#endif
+
+#ifdef DRIVER
+static void memory_error_and_abort ();
+static void *xmalloc PARAMS((size_t));
+static void *xrealloc PARAMS((void *, size_t));
+static void xfree PARAMS((void *));
+#else
+# include <xmalloc.h>
+#endif
+
+/* those are defines specific to snprintf to hopefully
+ * make the code clearer :-)
+ */
+#define RIGHT 1
+#define LEFT 0
+#define NOT_FOUND -1
+#define FOUND 1
+#define MAX_FIELD 15
+
+/* round off to the precision */
+#define ROUND(d, p) \
+ (d < 0.) ? \
+ d - pow_10(-(p)->precision) * 0.5 : \
+ d + pow_10(-(p)->precision) * 0.5
+
+/* set default precision */
+#define DEF_PREC(p) \
+ if ((p)->precision == NOT_FOUND) \
+ (p)->precision = 6
+
+/* put a char. increment the number of chars written even if we've exceeded
+ the vsnprintf/snprintf buffer size (for the return value) */
+#define PUT_CHAR(c, p) \
+ do \
+ { \
+ if (((p)->flags & PF_ALLOCBUF) && ((p)->counter >= (p)->length - 1)) \
+ { \
+ (p)->length += ASBUFSIZE; \
+ (p)->base = (char *)xrealloc((p)->base, (p)->length); \
+ (p)->holder = (p)->base + (p)->counter; /* in case reallocated */ \
+ } \
+ if ((p)->counter < (p)->length) \
+ *(p)->holder++ = (c); \
+ (p)->counter++; \
+ } \
+ while (0)
+
+/* Output a string. P->WIDTH has already been adjusted for padding. */
+#define PUT_STRING(string, len, p) \
+ do \
+ { \
+ PAD_RIGHT (p); \
+ while ((len)-- > 0) \
+ { \
+ PUT_CHAR (*(string), (p)); \
+ (string)++; \
+ } \
+ PAD_LEFT (p); \
+ } \
+ while (0)
+
+#define PUT_PLUS(d, p, zero) \
+ if (((p)->flags & PF_PLUS) && (d) > zero) \
+ PUT_CHAR('+', p)
+
+#define PUT_SPACE(d, p, zero) \
+ if (((p)->flags & PF_SPACE) && (d) > zero) \
+ PUT_CHAR(' ', p)
+
+/* pad right */
+#define PAD_RIGHT(p) \
+ if ((p)->width > 0 && (p)->justify != LEFT) \
+ for (; (p)->width > 0; (p)->width--) \
+ PUT_CHAR((p)->pad, p)
+
+/* pad left */
+#define PAD_LEFT(p) \
+ if ((p)->width > 0 && (p)->justify == LEFT) \
+ for (; (p)->width > 0; (p)->width--) \
+ PUT_CHAR((p)->pad, p)
+
+/* pad with zeros from decimal precision */
+#define PAD_ZERO(p) \
+ if ((p)->precision > 0) \
+ for (; (p)->precision > 0; (p)->precision--) \
+ PUT_CHAR('0', p)
+
+/* if width and prec. in the args */
+#define STAR_ARGS(p) \
+ do { \
+ if ((p)->flags & PF_STAR_W) \
+ { \
+ (p)->width = GETARG (int); \
+ if ((p)->width < 0) \
+ { \
+ (p)->flags |= PF_LADJUST; \
+ (p)->justify = LEFT; \
+ (p)->width = -(p)->width; \
+ } \
+ } \
+ if ((p)->flags & PF_STAR_P) \
+ { \
+ (p)->precision = GETARG (int); \
+ if ((p)->precision < 0) \
+ { \
+ (p)->flags &= ~PF_STAR_P; \
+ (p)->precision = NOT_FOUND; \
+ } \
+ } \
+ } while (0)
+
+#if defined (HAVE_LOCALE_H) && defined (HAVE_LOCALECONV)
+# define GETLOCALEDATA(d, t, g) \
+ do \
+ { \
+ struct lconv *lv; \
+ if ((d) == 0) { \
+ (d) = '.'; (t) = -1; (g) = 0; /* defaults */ \
+ lv = localeconv(); \
+ if (lv) \
+ { \
+ if (lv->decimal_point && lv->decimal_point[0]) \
+ (d) = lv->decimal_point[0]; \
+ if (lv->thousands_sep && lv->thousands_sep[0]) \
+ (t) = lv->thousands_sep[0]; \
+ (g) = lv->grouping ? lv->grouping : ""; \
+ if (*(g) == '\0' || *(g) == CHAR_MAX || (t) == -1) (g) = 0; \
+ } \
+ } \
+ } \
+ while (0);
+#else
+# define GETLOCALEDATA(d, t, g) \
+ ( (d) = '.', (t) = ',', g = "\003" )
+#endif
+
+#ifdef FLOATING_POINT
+/*
+ * Find the nth power of 10
+ */
+static double
+pow_10(n)
+ int n;
+{
+ double P;
+
+ /* handle common cases with fast switch statement. */
+ switch (n)
+ {
+ case -3: return .001;
+ case -2: return .01;
+ case -1: return .1;
+ case 0: return 1.;
+ case 1: return 10.;
+ case 2: return 100.;
+ case 3: return 1000.;
+ }
+
+ if (n < 0)
+ {
+ P = .0001;
+ for (n += 4; n < 0; n++)
+ P /= 10.;
+ }
+ else
+ {
+ P = 10000.;
+ for (n -= 4; n > 0; n--)
+ P *= 10.;
+ }
+
+ return P;
+}
+
+/*
+ * Find the integral part of the log in base 10
+ * Note: this not a real log10()
+ I just need and approximation(integerpart) of x in:
+ 10^x ~= r
+ * log_10(200) = 2;
+ * log_10(250) = 2;
+ *
+ * NOTE: do not call this with r == 0 -- an infinite loop results.
+ */
+static int
+log_10(r)
+ double r;
+{
+ int i = 0;
+ double result = 1.;
+
+ if (r < 0.)
+ r = -r;
+
+ if (r < 1.)
+ {
+ while (result >= r)
+ {
+ result /= 10.;
+ i++;
+ }
+ return (-i);
+ }
+ else
+ {
+ while (result <= r)
+ {
+ result *= 10.;
+ i++;
+ }
+ return (i - 1);
+ }
+}
+
+/*
+ * This function return the fraction part of a double
+ * and set in ip the integral part.
+ * In many ways it resemble the modf() found on most Un*x
+ */
+static double
+integral(real, ip)
+ double real;
+ double *ip;
+{
+ int j;
+ double i, s, p;
+ double real_integral = 0.;
+
+ /* take care of the obvious */
+ /* equal to zero ? */
+ if (real == 0.)
+ {
+ *ip = 0.;
+ return (0.);
+ }
+
+ /* negative number ? */
+ if (real < 0.)
+ real = -real;
+
+ /* a fraction ? */
+ if ( real < 1.)
+ {
+ *ip = 0.;
+ return real;
+ }
+
+ /* the real work :-) */
+ for (j = log_10(real); j >= 0; j--)
+ {
+ p = pow_10(j);
+ s = (real - real_integral)/p;
+ i = 0.;
+ while (i + 1. <= s)
+ i++;
+ real_integral += i*p;
+ }
+ *ip = real_integral;
+ return (real - real_integral);
+}
+
+#define PRECISION 1.e-6
+/*
+ * return an ascii representation of the integral part of the number
+ * and set fract to be an ascii representation of the fraction part
+ * the container for the fraction and the integral part or statically
+ * declare with fix size
+ */
+static char *
+numtoa(number, base, precision, fract)
+ double number;
+ int base, precision;
+ char **fract;
+{
+ register int i, j;
+ double ip, fp; /* integer and fraction part */
+ double fraction;
+ int digits, sign;
+ static char integral_part[MAX_INT];
+ static char fraction_part[MAX_FRACT];
+ int ch;
+
+ /* taking care of the obvious case: 0.0 */
+ if (number == 0.)
+ {
+ integral_part[0] = '0';
+ integral_part[1] = '\0';
+ /* The fractional part has to take the precision into account */
+ for (ch = 0; ch < precision-1; ch++)
+ fraction_part[ch] = '0';
+ fraction_part[ch] = '0';
+ fraction_part[ch+1] = '\0';
+ if (fract)
+ *fract = fraction_part;
+ return integral_part;
+ }
+
+ /* -0 is tricky */
+ sign = (number == -0.) ? '-' : ((number < 0.) ? '-' : '+');
+ digits = MAX_INT - 1;
+
+ /* for negative numbers */
+ if (sign == '-')
+ {
+ number = -number;
+ digits--; /* sign consume one digit */
+ }
+
+ fraction = integral(number, &ip);
+ number = ip;
+
+ /* do the integral part */
+ if (ip == 0.)
+ {
+ integral_part[0] = '0';
+ i = 1;
+ }
+ else
+ {
+ for ( i = 0; i < digits && number != 0.; ++i)
+ {
+ number /= base;
+ fp = integral(number, &ip);
+ ch = (int)((fp + PRECISION)*base); /* force to round */
+ integral_part[i] = (ch <= 9) ? ch + '0' : ch + 'a' - 10;
+ if (! ISXDIGIT((unsigned char)integral_part[i]))
+ break; /* bail out overflow !! */
+ number = ip;
+ }
+ }
+
+ /* Oh No !! out of bound, ho well fill it up ! */
+ if (number != 0.)
+ for (i = 0; i < digits; ++i)
+ integral_part[i] = '9';
+
+ /* put the sign ? */
+ if (sign == '-')
+ integral_part[i++] = '-';
+
+ integral_part[i] = '\0';
+
+ /* reverse every thing */
+ for ( i--, j = 0; j < i; j++, i--)
+ SWAP_INT(integral_part[i], integral_part[j]);
+
+ /* the fractional part */
+ for (i=0, fp=fraction; precision > 0 && i < MAX_FRACT ; i++, precision--)
+ {
+ fraction_part[i] = (int)((fp + PRECISION)*10. + '0');
+ if (! DIGIT(fraction_part[i])) /* underflow ? */
+ break;
+ fp = (fp*10.0) - (double)(long)((fp + PRECISION)*10.);
+ }
+ fraction_part[i] = '\0';
+
+ if (fract != (char **)0)
+ *fract = fraction_part;
+
+ return integral_part;
+}
+#endif
+
+/* for %d and friends, it puts in holder
+ * the representation with the right padding
+ */
+static void
+number(p, d, base)
+ struct DATA *p;
+ unsigned long d;
+ int base;
+{
+ char *tmp, *t;
+ long sd;
+ int flags;
+
+ /* An explicit precision turns off the zero-padding flag and sets the
+ pad character back to space. */
+ if ((p->flags & PF_ZEROPAD) && p->precision >= 0 && (p->flags & PF_DOT))
+ {
+ p->flags &= ~PF_ZEROPAD;
+ p->pad = ' ';
+ }
+
+ sd = d; /* signed for ' ' padding in base 10 */
+ flags = 0;
+ flags = (*p->pf == 'x' || *p->pf == 'X' || *p->pf == 'o' || *p->pf == 'u' || *p->pf == 'U') ? FL_UNSIGNED : 0;
+ if (*p->pf == 'X')
+ flags |= FL_HEXUPPER;
+
+ tmp = fmtulong (d, base, intbuf, sizeof(intbuf), flags);
+ t = 0;
+ if ((p->flags & PF_THOUSANDS))
+ {
+ GETLOCALEDATA(decpoint, thoussep, grouping);
+ if (grouping && (t = groupnum (tmp)))
+ tmp = t;
+ }
+
+ /* need to add one for any `+', but we only add one in base 10 */
+ p->width -= strlen(tmp) + (base == 10 && d > 0 && (p->flags & PF_PLUS));
+ PAD_RIGHT(p);
+
+ if ((p->flags & PF_DOT) && p->precision > 0)
+ {
+ p->precision -= strlen(tmp);
+ PAD_ZERO(p);
+ }
+
+ switch (base)
+ {
+ case 10:
+ PUT_PLUS(sd, p, 0);
+ PUT_SPACE(sd, p, 0);
+ break;
+ case 8:
+ if (p->flags & PF_ALTFORM)
+ PUT_CHAR('0', p);
+ break;
+ case 16:
+ if (p->flags & PF_ALTFORM)
+ {
+ PUT_CHAR('0', p);
+ PUT_CHAR(*p->pf, p);
+ }
+ break;
+ }
+
+ while (*tmp)
+ {
+ PUT_CHAR(*tmp, p);
+ tmp++;
+ }
+
+ PAD_LEFT(p);
+ FREE (t);
+}
+
+#ifdef HAVE_LONG_LONG
+/*
+ * identical to number() but works for `long long'
+ */
+static void
+lnumber(p, d, base)
+ struct DATA *p;
+ unsigned long long d;
+ int base;
+{
+ char *tmp, *t;
+ long long sd;
+ int flags;
+
+ /* An explicit precision turns off the zero-padding flag and sets the
+ pad character back to space. */
+ if ((p->flags & PF_ZEROPAD) && p->precision >= 0 && (p->flags & PF_DOT))
+ {
+ p->flags &= ~PF_ZEROPAD;
+ p->pad = ' ';
+ }
+
+ sd = d; /* signed for ' ' padding in base 10 */
+ flags = (*p->pf == 'x' || *p->pf == 'X' || *p->pf == 'o' || *p->pf == 'u' || *p->pf == 'U') ? FL_UNSIGNED : 0;
+ if (*p->pf == 'X')
+ flags |= FL_HEXUPPER;
+
+ tmp = fmtullong (d, base, intbuf, sizeof(intbuf), flags);
+ t = 0;
+ if ((p->flags & PF_THOUSANDS))
+ {
+ GETLOCALEDATA(decpoint, thoussep, grouping);
+ if (grouping && (t = groupnum (tmp)))
+ tmp = t;
+ }
+
+ /* need to add one for any `+', but we only add one in base 10 */
+ p->width -= strlen(tmp) + (base == 10 && d > 0 && (p->flags & PF_PLUS));
+ PAD_RIGHT(p);
+
+ if ((p->flags & PF_DOT) && p->precision > 0)
+ {
+ p->precision -= strlen(tmp);
+ PAD_ZERO(p);
+ }
+
+ switch (base)
+ {
+ case 10:
+ PUT_PLUS(sd, p, 0);
+ PUT_SPACE(sd, p, 0);
+ break;
+ case 8:
+ if (p->flags & PF_ALTFORM)
+ PUT_CHAR('0', p);
+ break;
+ case 16:
+ if (p->flags & PF_ALTFORM)
+ {
+ PUT_CHAR('0', p);
+ PUT_CHAR(*p->pf, p);
+ }
+ break;
+ }
+
+ while (*tmp)
+ {
+ PUT_CHAR(*tmp, p);
+ tmp++;
+ }
+
+ PAD_LEFT(p);
+ FREE (t);
+}
+#endif
+
+static void
+pointer(p, d)
+ struct DATA *p;
+ unsigned long d;
+{
+ char *tmp;
+
+ tmp = fmtulong(d, 16, intbuf, sizeof(intbuf), 0);
+ p->width -= strlen(tmp);
+ PAD_RIGHT(p);
+
+ /* prefix '0x' for pointers */
+ PUT_CHAR('0', p);
+ PUT_CHAR('x', p);
+
+ while (*tmp)
+ {
+ PUT_CHAR(*tmp, p);
+ tmp++;
+ }
+
+ PAD_LEFT(p);
+}
+
+/* %s strings */
+static void
+strings(p, tmp)
+ struct DATA *p;
+ char *tmp;
+{
+ size_t len;
+
+ len = strlen(tmp);
+ if (p->precision != NOT_FOUND) /* the smallest number */
+ len = (len < p->precision ? len : p->precision);
+ p->width -= len;
+
+ PUT_STRING (tmp, len, p);
+}
+
+#if HANDLE_MULTIBYTE
+/* %ls wide-character strings */
+static void
+wstrings(p, tmp)
+ struct DATA *p;
+ wchar_t *tmp;
+{
+ size_t len;
+ mbstate_t mbs;
+ char *os;
+ const wchar_t *ws;
+
+ memset (&mbs, '\0', sizeof (mbstate_t));
+ ws = (const wchar_t *)tmp;
+
+ os = (char *)NULL;
+ if (p->precision != NOT_FOUND)
+ {
+ os = (char *)xmalloc (p->precision + 1);
+ len = wcsrtombs (os, &ws, p->precision, &mbs);
+ }
+ else
+ {
+ len = wcsrtombs (NULL, &ws, 0, &mbs);
+ if (len != (size_t)-1)
+ {
+ memset (&mbs, '\0', sizeof (mbstate_t));
+ os = (char *)xmalloc (len + 1);
+ (void)wcsrtombs (os, &ws, len + 1, &mbs);
+ }
+ }
+ if (len == (size_t)-1)
+ {
+ /* invalid multibyte sequence; bail now. */
+ FREE (os);
+ return;
+ }
+
+ p->width -= len;
+ PUT_STRING (os, len, p);
+ free (os);
+}
+
+static void
+wchars (p, wc)
+ struct DATA *p;
+ wint_t wc;
+{
+ char *lbuf, *l;
+ mbstate_t mbs;
+ size_t len;
+
+ lbuf = (char *)malloc (MB_CUR_MAX+1);
+ if (lbuf == 0)
+ return;
+ memset (&mbs, '\0', sizeof (mbstate_t));
+ len = wcrtomb (lbuf, wc, &mbs);
+ if (len == (size_t)-1)
+ /* conversion failed; bail now. */
+ return;
+ p->width -= len;
+ l = lbuf;
+ PUT_STRING (l, len, p);
+ free (lbuf);
+}
+#endif /* HANDLE_MULTIBYTE */
+
+#ifdef FLOATING_POINT
+
+/* Check for [+-]infinity and NaN. If MODE == 1, we check for Infinity, else
+ (mode == 2) we check for NaN. This does the necessary printing. Returns
+ 1 if Inf or Nan, 0 if not. */
+static int
+chkinfnan(p, d, mode)
+ struct DATA *p;
+ double d;
+ int mode; /* == 1 for inf, == 2 for nan */
+{
+ int i;
+ char *tmp;
+ char *big, *small;
+
+ i = (mode == 1) ? isinf(d) : isnan(d);
+ if (i == 0)
+ return 0;
+ big = (mode == 1) ? "INF" : "NAN";
+ small = (mode == 1) ? "inf" : "nan";
+
+ tmp = (*p->pf == 'F' || *p->pf == 'G' || *p->pf == 'E') ? big : small;
+
+ if (i < 0)
+ PUT_CHAR('-', p);
+
+ while (*tmp)
+ {
+ PUT_CHAR (*tmp, p);
+ tmp++;
+ }
+
+ return 1;
+}
+
+/* %f %F %g %G floating point representation */
+static void
+floating(p, d)
+ struct DATA *p;
+ double d;
+{
+ char *tmp, *tmp2, *t;
+ int i;
+
+ if (d != 0 && (chkinfnan(p, d, 1) || chkinfnan(p, d, 2)))
+ return; /* already printed nan or inf */
+
+ GETLOCALEDATA(decpoint, thoussep, grouping);
+ DEF_PREC(p);
+ d = ROUND(d, p);
+ tmp = dtoa(d, p->precision, &tmp2);
+ t = 0;
+ if ((p->flags & PF_THOUSANDS) && grouping && (t = groupnum (tmp)))
+ tmp = t;
+
+ if ((*p->pf == 'g' || *p->pf == 'G') && (p->flags & PF_ALTFORM) == 0)
+ {
+ /* smash the trailing zeros unless altform */
+ for (i = strlen(tmp2) - 1; i >= 0 && tmp2[i] == '0'; i--)
+ tmp2[i] = '\0';
+ if (tmp2[0] == '\0')
+ p->precision = 0;
+ }
+
+ /* calculate the padding. 1 for the dot */
+ p->width = p->width -
+ /* XXX - should this be d>0. && (p->flags & PF_PLUS) ? */
+#if 0
+ ((d > 0. && p->justify == RIGHT) ? 1:0) -
+#else
+ ((d > 0. && (p->flags & PF_PLUS)) ? 1:0) -
+#endif
+ ((p->flags & PF_SPACE) ? 1:0) -
+ strlen(tmp) - p->precision -
+ ((p->precision != 0 || (p->flags & PF_ALTFORM)) ? 1 : 0); /* radix char */
+
+ if (p->pad == ' ')
+ {
+ PAD_RIGHT(p);
+ PUT_PLUS(d, p, 0.);
+ }
+ else
+ {
+ if (*tmp == '-')
+ PUT_CHAR(*tmp++, p);
+ PUT_PLUS(d, p, 0.);
+ PAD_RIGHT(p);
+ }
+ PUT_SPACE(d, p, 0.);
+
+ while (*tmp)
+ {
+ PUT_CHAR(*tmp, p); /* the integral */
+ tmp++;
+ }
+ FREE (t);
+
+ if (p->precision != 0 || (p->flags & PF_ALTFORM))
+ PUT_CHAR(decpoint, p); /* put the '.' */
+
+ for (; *tmp2; tmp2++)
+ PUT_CHAR(*tmp2, p); /* the fraction */
+
+ PAD_LEFT(p);
+}
+
+/* %e %E %g %G exponent representation */
+static void
+exponent(p, d)
+ struct DATA *p;
+ double d;
+{
+ char *tmp, *tmp2;
+ int j, i;
+
+ if (d != 0 && (chkinfnan(p, d, 1) || chkinfnan(p, d, 2)))
+ return; /* already printed nan or inf */
+
+ GETLOCALEDATA(decpoint, thoussep, grouping);
+ DEF_PREC(p);
+ if (d == 0.)
+ j = 0;
+ else
+ {
+ j = log_10(d);
+ d = d / pow_10(j); /* get the Mantissa */
+ d = ROUND(d, p);
+ }
+ tmp = dtoa(d, p->precision, &tmp2);
+
+ /* 1 for unit, 1 for the '.', 1 for 'e|E',
+ * 1 for '+|-', 2 for 'exp' (but no `.' if precision == 0 */
+ /* calculate how much padding need */
+ p->width = p->width -
+ /* XXX - should this be d>0. && (p->flags & PF_PLUS) ? */
+#if 0
+ ((d > 0. && p->justify == RIGHT) ? 1:0) -
+#else
+ ((d > 0. && (p->flags & PF_PLUS)) ? 1:0) -
+#endif
+ (p->precision != 0 || (p->flags & PF_ALTFORM)) -
+ ((p->flags & PF_SPACE) ? 1:0) - p->precision - 5;
+
+ if (p->pad == ' ')
+ {
+ PAD_RIGHT(p);
+ PUT_PLUS(d, p, 0.);
+ }
+ else
+ {
+ if (*tmp == '-')
+ PUT_CHAR(*tmp++, p);
+ PUT_PLUS(d, p, 0.);
+ PAD_RIGHT(p);
+ }
+ PUT_SPACE(d, p, 0.);
+
+ while (*tmp)
+ {
+ PUT_CHAR(*tmp, p);
+ tmp++;
+ }
+
+ if (p->precision != 0 || (p->flags & PF_ALTFORM))
+ PUT_CHAR(decpoint, p); /* the '.' */
+
+ if ((*p->pf == 'g' || *p->pf == 'G') && (p->flags & PF_ALTFORM) == 0)
+ /* smash the trailing zeros unless altform */
+ for (i = strlen(tmp2) - 1; i >= 0 && tmp2[i] == '0'; i--)
+ tmp2[i] = '\0';
+
+ for (; *tmp2; tmp2++)
+ PUT_CHAR(*tmp2, p); /* the fraction */
+
+ /* the exponent put the 'e|E' */
+ if (*p->pf == 'g' || *p->pf == 'e')
+ PUT_CHAR('e', p);
+ else
+ PUT_CHAR('E', p);
+
+ /* the sign of the exp */
+ if (j >= 0)
+ PUT_CHAR('+', p);
+ else
+ {
+ PUT_CHAR('-', p);
+ j = -j;
+ }
+
+ tmp = itoa(j);
+ /* pad out to at least two spaces. pad with `0' if the exponent is a
+ single digit. */
+ if (j <= 9)
+ PUT_CHAR('0', p);
+
+ /* the exponent */
+ while (*tmp)
+ {
+ PUT_CHAR(*tmp, p);
+ tmp++;
+ }
+
+ PAD_LEFT(p);
+}
+#endif
+
+/* Return a new string with the digits in S grouped according to the locale's
+ grouping info and thousands separator. If no grouping should be performed,
+ this returns NULL; the caller needs to check for it. */
+static char *
+groupnum (s)
+ char *s;
+{
+ char *se, *ret, *re, *g;
+ int len, slen;
+
+ if (grouping == 0 || *grouping <= 0 || *grouping == CHAR_MAX)
+ return ((char *)NULL);
+
+ /* find min grouping to size returned string */
+ for (len = *grouping, g = grouping; *g; g++)
+ if (*g > 0 && *g < len)
+ len = *g;
+
+ slen = strlen (s);
+ len = slen / len + 1;
+ ret = (char *)xmalloc (slen + len + 1);
+ re = ret + slen + len;
+ *re = '\0';
+
+ g = grouping;
+ se = s + slen;
+ len = *g;
+
+ while (se > s)
+ {
+ *--re = *--se;
+
+ /* handle `-' inserted by numtoa() and the fmtu* family here. */
+ if (se > s && se[-1] == '-')
+ continue;
+
+ /* begin new group. */
+ if (--len == 0 && se > s)
+ {
+ *--re = thoussep;
+ len = *++g; /* was g++, but that uses first char twice (glibc bug, too) */
+ if (*g == '\0')
+ len = *--g; /* use previous grouping */
+ else if (*g == CHAR_MAX)
+ {
+ do
+ *--re = *--se;
+ while (se > s);
+ break;
+ }
+ }
+ }
+
+ if (re > ret)
+#ifdef HAVE_MEMMOVE
+ memmove (ret, re, strlen (re) + 1);
+#else
+ strcpy (ret, re);
+#endif
+
+ return ret;
+}
+
+/* initialize the conversion specifiers */
+static void
+init_conv_flag (p)
+ struct DATA *p;
+{
+ p->flags &= PF_ALLOCBUF; /* preserve PF_ALLOCBUF flag */
+ p->precision = p->width = NOT_FOUND;
+ p->justify = NOT_FOUND;
+ p->pad = ' ';
+}
+
+static void
+init_data (p, string, length, format, mode)
+ struct DATA *p;
+ char *string;
+ size_t length;
+ const char *format;
+ int mode;
+{
+ p->length = length - 1; /* leave room for '\0' */
+ p->holder = p->base = string;
+ p->pf = format;
+ p->counter = 0;
+ p->flags = (mode == PFM_AS) ? PF_ALLOCBUF : 0;
+}
+
+static int
+#if defined (__STDC__)
+vsnprintf_internal(struct DATA *data, char *string, size_t length, const char *format, va_list args)
+#else
+vsnprintf_internal(data, string, length, format, args)
+ struct DATA *data;
+ char *string;
+ size_t length;
+ const char *format;
+ va_list args;
+#endif
+{
+ double d; /* temporary holder */
+#ifdef HAVE_LONG_DOUBLE
+ long double ld; /* for later */
+#endif
+ unsigned long ul;
+#ifdef HAVE_LONG_LONG
+ unsigned long long ull;
+#endif
+ int state, i, c, n;
+ char *s;
+#if HANDLE_MULTIBYTE
+ wchar_t *ws;
+ wint_t wc;
+#endif
+ const char *convstart;
+ int negprec;
+
+ /* Sanity check, the string length must be >= 0. C99 actually says that
+ LENGTH can be zero here, in the case of snprintf/vsnprintf (it's never
+ 0 in the case of asprintf/vasprintf), and the return value is the number
+ of characters that would have been written. */
+ if (length < 0)
+ return -1;
+
+ if (format == 0)
+ return 0;
+
+ /* Reset these for each call because the locale might have changed. */
+ decpoint = thoussep = 0;
+ grouping = 0;
+
+ negprec = 0;
+ for (; c = *(data->pf); data->pf++)
+ {
+ if (c != '%')
+ {
+ PUT_CHAR (c, data);
+ continue;
+ }
+
+ convstart = data->pf;
+ init_conv_flag (data); /* initialise format flags */
+
+ state = 1;
+ for (state = 1; state && *data->pf; )
+ {
+ c = *(++data->pf);
+ /* fmtend = data->pf */
+#if defined (FLOATING_POINT) && defined (HAVE_LONG_DOUBLE)
+ if (data->flags & PF_LONGDBL)
+ {
+ switch (c)
+ {
+ case 'f': case 'F':
+ case 'e': case 'E':
+ case 'g': case 'G':
+# ifdef HAVE_PRINTF_A_FORMAT
+ case 'a': case 'A':
+# endif
+ STAR_ARGS (data);
+ ld = GETLDOUBLE (data);
+ ldfallback (data, convstart, data->pf, ld);
+ goto conv_break;
+ }
+ }
+#endif /* FLOATING_POINT && HAVE_LONG_DOUBLE */
+
+ switch (c)
+ {
+ /* Parse format flags */
+ case '\0': /* a NULL here ? ? bail out */
+ *data->holder = '\0';
+ return data->counter;
+ break;
+ case '#':
+ data->flags |= PF_ALTFORM;
+ continue;
+ case '*':
+ if (data->flags & PF_DOT)
+ data->flags |= PF_STAR_P;
+ else
+ data->flags |= PF_STAR_W;
+ continue;
+ case '-':
+ if ((data->flags & PF_DOT) == 0)
+ {
+ data->flags |= PF_LADJUST;
+ data->justify = LEFT;
+ }
+ else
+ negprec = 1;
+ continue;
+ case ' ':
+ if ((data->flags & PF_PLUS) == 0)
+ data->flags |= PF_SPACE;
+ continue;
+ case '+':
+ if ((data->flags & PF_DOT) == 0)
+ {
+ data->flags |= PF_PLUS;
+ if ((data->flags & PF_LADJUST) == 0)
+ data->justify = RIGHT;
+ }
+ continue;
+ case '\'':
+ data->flags |= PF_THOUSANDS;
+ continue;
+
+ case '0':
+ /* If we're not specifying precision (in which case we've seen
+ a `.') and we're not performing left-adjustment (in which
+ case the `0' is ignored), a `0' is taken as the zero-padding
+ flag. */
+ if ((data->flags & (PF_DOT|PF_LADJUST)) == 0)
+ {
+ data->flags |= PF_ZEROPAD;
+ data->pad = '0';
+ continue;
+ }
+ case '1': case '2': case '3':
+ case '4': case '5': case '6':
+ case '7': case '8': case '9':
+ n = 0;
+ do
+ {
+ n = n * 10 + TODIGIT(c);
+ c = *(++data->pf);
+ }
+ while (DIGIT(c));
+ data->pf--; /* went too far */
+ if (n < 0)
+ n = 0;
+ if (data->flags & PF_DOT)
+ data->precision = negprec ? NOT_FOUND : n;
+ else
+ data->width = n;
+ continue;
+
+ /* optional precision */
+ case '.':
+ data->flags |= PF_DOT;
+ data->precision = 0;
+ continue;
+
+ /* length modifiers */
+ case 'h':
+ data->flags |= (data->flags & PF_SHORTINT) ? PF_SIGNEDCHAR : PF_SHORTINT;
+ continue;
+ case 'l':
+ data->flags |= (data->flags & PF_LONGINT) ? PF_LONGLONG : PF_LONGINT;
+ continue;
+ case 'L':
+ data->flags |= PF_LONGDBL;
+ continue;
+ case 'q':
+ data->flags |= PF_LONGLONG;
+ continue;
+ case 'j':
+ data->flags |= PF_INTMAX_T;
+ SET_SIZE_FLAGS(data, intmax_t);
+ continue;
+ case 'z':
+ data->flags |= PF_SIZE_T;
+ SET_SIZE_FLAGS(data, size_t);
+ continue;
+ case 't':
+ data->flags |= PF_PTRDIFF_T;
+ SET_SIZE_FLAGS(data, ptrdiff_t);
+ continue;
+
+ /* Conversion specifiers */
+#ifdef FLOATING_POINT
+ case 'f': /* float, double */
+ case 'F':
+ STAR_ARGS(data);
+ d = GETDOUBLE(data);
+ floating(data, d);
+conv_break:
+ state = 0;
+ break;
+ case 'g':
+ case 'G':
+ STAR_ARGS(data);
+ DEF_PREC(data);
+ d = GETDOUBLE(data);
+ i = (d != 0.) ? log_10(d) : -1;
+ /*
+ * for '%g|%G' ANSI: use f if exponent
+ * is in the range or [-4,p] exclusively
+ * else use %e|%E
+ */
+ if (-4 < i && i < data->precision)
+ {
+ /* reset precision */
+ data->precision -= i + 1;
+ floating(data, d);
+ }
+ else
+ {
+ /* reduce precision by 1 because of leading digit before
+ decimal point in e format, unless specified as 0. */
+ if (data->precision > 0)
+ data->precision--;
+ exponent(data, d);
+ }
+ state = 0;
+ break;
+ case 'e':
+ case 'E': /* Exponent double */
+ STAR_ARGS(data);
+ d = GETDOUBLE(data);
+ exponent(data, d);
+ state = 0;
+ break;
+# ifdef HAVE_PRINTF_A_FORMAT
+ case 'a':
+ case 'A':
+ STAR_ARGS(data);
+ d = GETDOUBLE(data);
+ dfallback(data, convstart, data->pf, d);
+ state = 0;
+ break;
+# endif /* HAVE_PRINTF_A_FORMAT */
+#endif /* FLOATING_POINT */
+ case 'U':
+ data->flags |= PF_LONGINT;
+ /* FALLTHROUGH */
+ case 'u':
+ STAR_ARGS(data);
+#ifdef HAVE_LONG_LONG
+ if (data->flags & PF_LONGLONG)
+ {
+ ull = GETARG (unsigned long long);
+ lnumber(data, ull, 10);
+ }
+ else
+#endif
+ {
+ ul = GETUNSIGNED(data);
+ number(data, ul, 10);
+ }
+ state = 0;
+ break;
+ case 'D':
+ data->flags |= PF_LONGINT;
+ /* FALLTHROUGH */
+ case 'd': /* decimal */
+ case 'i':
+ STAR_ARGS(data);
+#ifdef HAVE_LONG_LONG
+ if (data->flags & PF_LONGLONG)
+ {
+ ull = GETARG (long long);
+ lnumber(data, ull, 10);
+ }
+ else
+#endif
+ {
+ ul = GETSIGNED(data);
+ number(data, ul, 10);
+ }
+ state = 0;
+ break;
+ case 'o': /* octal */
+ STAR_ARGS(data);
+#ifdef HAVE_LONG_LONG
+ if (data->flags & PF_LONGLONG)
+ {
+ ull = GETARG (unsigned long long);
+ lnumber(data, ull, 8);
+ }
+ else
+#endif
+ {
+ ul = GETUNSIGNED(data);
+ number(data, ul, 8);
+ }
+ state = 0;
+ break;
+ case 'x':
+ case 'X': /* hexadecimal */
+ STAR_ARGS(data);
+#ifdef HAVE_LONG_LONG
+ if (data->flags & PF_LONGLONG)
+ {
+ ull = GETARG (unsigned long long);
+ lnumber(data, ull, 16);
+ }
+ else
+#endif
+ {
+ ul = GETUNSIGNED(data);
+ number(data, ul, 16);
+ }
+ state = 0;
+ break;
+ case 'p':
+ STAR_ARGS(data);
+ ul = (unsigned long)GETARG (void *);
+ pointer(data, ul);
+ state = 0;
+ break;
+#if HANDLE_MULTIBYTE
+ case 'C':
+ data->flags |= PF_LONGINT;
+ /* FALLTHROUGH */
+#endif
+ case 'c': /* character */
+ STAR_ARGS(data);
+#if HANDLE_MULTIBYTE
+ if (data->flags & PF_LONGINT)
+ {
+ wc = GETARG (wint_t);
+ wchars (data, wc);
+ }
+ else
+#endif
+ {
+ ul = GETARG (int);
+ PUT_CHAR(ul, data);
+ }
+ state = 0;
+ break;
+#if HANDLE_MULTIBYTE
+ case 'S':
+ data->flags |= PF_LONGINT;
+ /* FALLTHROUGH */
+#endif
+ case 's': /* string */
+ STAR_ARGS(data);
+#if HANDLE_MULTIBYTE
+ if (data->flags & PF_LONGINT)
+ {
+ ws = GETARG (wchar_t *);
+ wstrings (data, ws);
+ }
+ else
+#endif
+ {
+ s = GETARG (char *);
+ strings(data, s);
+ }
+ state = 0;
+ break;
+ case 'n':
+#ifdef HAVE_LONG_LONG
+ if (data->flags & PF_LONGLONG)
+ *(GETARG (long long *)) = data->counter;
+ else
+#endif
+ if (data->flags & PF_LONGINT)
+ *(GETARG (long *)) = data->counter;
+ else if (data->flags & PF_SHORTINT)
+ *(GETARG (short *)) = data->counter;
+ else
+ *(GETARG (int *)) = data->counter;
+ state = 0;
+ break;
+ case '%': /* nothing just % */
+ PUT_CHAR('%', data);
+ state = 0;
+ break;
+ default:
+ /* is this an error ? maybe bail out */
+ state = 0;
+ break;
+ } /* end switch */
+ } /* end of `%' for loop */
+ } /* end of format string for loop */
+
+ if (data->length >= 0)
+ *data->holder = '\0'; /* the end ye ! */
+
+ return data->counter;
+}
+
+#if defined (FLOATING_POINT) && defined (HAVE_LONG_DOUBLE)
+/*
+ * Printing floating point numbers accurately is an art. I'm not good
+ * at it. Fall back to sprintf for long double formats.
+ */
+static void
+ldfallback (data, fs, fe, ld)
+ struct DATA *data;
+ const char *fs, *fe;
+ long double ld;
+{
+ register char *x;
+ char fmtbuf[FALLBACK_FMTSIZE], *obuf;
+ int fl;
+
+ fl = LFALLBACK_BASE + (data->precision < 6 ? 6 : data->precision) + 2;
+ obuf = (char *)xmalloc (fl);
+ fl = fe - fs + 1;
+ strncpy (fmtbuf, fs, fl);
+ fmtbuf[fl] = '\0';
+
+ if ((data->flags & PF_STAR_W) && (data->flags & PF_STAR_P))
+ sprintf (obuf, fmtbuf, data->width, data->precision, ld);
+ else if (data->flags & PF_STAR_W)
+ sprintf (obuf, fmtbuf, data->width, ld);
+ else if (data->flags & PF_STAR_P)
+ sprintf (obuf, fmtbuf, data->precision, ld);
+ else
+ sprintf (obuf, fmtbuf, ld);
+
+ for (x = obuf; *x; x++)
+ PUT_CHAR (*x, data);
+ xfree (obuf);
+}
+#endif /* FLOATING_POINT && HAVE_LONG_DOUBLE */
+
+#ifdef FLOATING_POINT
+/* Used for %a, %A if the libc printf supports them. */
+static void
+dfallback (data, fs, fe, d)
+ struct DATA *data;
+ const char *fs, *fe;
+ double d;
+{
+ register char *x;
+ char fmtbuf[FALLBACK_FMTSIZE], obuf[FALLBACK_BASE];
+ int fl;
+
+ fl = fe - fs + 1;
+ strncpy (fmtbuf, fs, fl);
+ fmtbuf[fl] = '\0';
+
+ if ((data->flags & PF_STAR_W) && (data->flags & PF_STAR_P))
+ sprintf (obuf, fmtbuf, data->width, data->precision, d);
+ else if (data->flags & PF_STAR_W)
+ sprintf (obuf, fmtbuf, data->width, d);
+ else if (data->flags & PF_STAR_P)
+ sprintf (obuf, fmtbuf, data->precision, d);
+ else
+ sprintf (obuf, fmtbuf, d);
+
+ for (x = obuf; *x; x++)
+ PUT_CHAR (*x, data);
+}
+#endif /* FLOATING_POINT */
+
+#if !HAVE_SNPRINTF
+
+int
+#if defined (__STDC__)
+vsnprintf(char *string, size_t length, const char *format, va_list args)
+#else
+vsnprintf(string, length, format, args)
+ char *string;
+ size_t length;
+ const char *format;
+ va_list args;
+#endif
+{
+ struct DATA data;
+
+ if (string == 0 && length != 0)
+ return 0;
+ init_data (&data, string, length, format, PFM_SN);
+ return (vsnprintf_internal(&data, string, length, format, args));
+}
+
+int
+#if defined(PREFER_STDARG)
+snprintf(char *string, size_t length, const char * format, ...)
+#else
+snprintf(string, length, format, va_alist)
+ char *string;
+ size_t length;
+ const char *format;
+ va_dcl
+#endif
+{
+ struct DATA data;
+ int rval;
+ va_list args;
+
+ SH_VA_START(args, format);
+
+ if (string == 0 && length != 0)
+ return 0;
+ init_data (&data, string, length, format, PFM_SN);
+ rval = vsnprintf_internal (&data, string, length, format, args);
+
+ va_end(args);
+
+ return rval;
+}
+
+#endif /* HAVE_SNPRINTF */
+
+#if !HAVE_ASPRINTF
+
+int
+#if defined (__STDC__)
+vasprintf(char **stringp, const char *format, va_list args)
+#else
+vasprintf(stringp, format, args)
+ char **stringp;
+ const char *format;
+ va_list args;
+#endif
+{
+ struct DATA data;
+ char *string;
+ int r;
+
+ string = (char *)xmalloc(ASBUFSIZE);
+ init_data (&data, string, ASBUFSIZE, format, PFM_AS);
+ r = vsnprintf_internal(&data, string, ASBUFSIZE, format, args);
+ *stringp = data.base; /* not string in case reallocated */
+ return r;
+}
+
+int
+#if defined(PREFER_STDARG)
+asprintf(char **stringp, const char * format, ...)
+#else
+asprintf(stringp, format, va_alist)
+ char **stringp;
+ const char *format;
+ va_dcl
+#endif
+{
+ int rval;
+ va_list args;
+
+ SH_VA_START(args, format);
+
+ rval = vasprintf (stringp, format, args);
+
+ va_end(args);
+
+ return rval;
+}
+
+#endif /* !HAVE_ASPRINTF */
+
+#endif /* !HAVE_SNPRINTF || !HAVE_ASPRINTF */
+
+#ifdef DRIVER
+
+static void
+memory_error_and_abort ()
+{
+ write (2, "out of virtual memory\n", 22);
+ abort ();
+}
+
+static void *
+xmalloc(bytes)
+ size_t bytes;
+{
+ void *ret;
+
+ ret = malloc(bytes);
+ if (ret == 0)
+ memory_error_and_abort ();
+ return ret;
+}
+
+static void *
+xrealloc (pointer, bytes)
+ void *pointer;
+ size_t bytes;
+{
+ void *ret;
+
+ ret = pointer ? realloc(pointer, bytes) : malloc(bytes);
+ if (ret == 0)
+ memory_error_and_abort ();
+ return ret;
+}
+
+static void
+xfree(x)
+ void *x;
+{
+ if (x)
+ free (x);
+}
+
+/* set of small tests for snprintf() */
+main()
+{
+ char holder[100];
+ char *h;
+ int i, si, ai;
+
+#ifdef HAVE_LOCALE_H
+ setlocale(LC_ALL, "");
+#endif
+
+#if 1
+ si = snprintf((char *)NULL, 0, "abcde\n");
+ printf("snprintf returns %d with NULL first argument and size of 0\n", si);
+ si = snprintf(holder, 0, "abcde\n");
+ printf("snprintf returns %d with non-NULL first argument and size of 0\n", si);
+ si = snprintf((char *)NULL, 16, "abcde\n");
+ printf("snprintf returns %d with NULL first argument and non-zero size\n", si);
+
+/*
+ printf("Suite of test for snprintf:\n");
+ printf("a_format\n");
+ printf("printf() format\n");
+ printf("snprintf() format\n\n");
+*/
+/* Checking the field widths */
+
+ printf("/%%ld %%ld/, 336, 336\n");
+ snprintf(holder, sizeof holder, "/%ld %ld/\n", 336, 336);
+ asprintf(&h, "/%ld %ld/\n", 336, 336);
+ printf("/%ld %ld/\n", 336, 336);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%d/, 336\n");
+ snprintf(holder, sizeof holder, "/%d/\n", 336);
+ asprintf(&h, "/%d/\n", 336);
+ printf("/%d/\n", 336);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%2d/, 336\n");
+ snprintf(holder, sizeof holder, "/%2d/\n", 336);
+ asprintf(&h, "/%2d/\n", 336);
+ printf("/%2d/\n", 336);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%10d/, 336\n");
+ snprintf(holder, sizeof holder, "/%10d/\n", 336);
+ asprintf(&h, "/%10d/\n", 336);
+ printf("/%10d/\n", 336);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%-10d/, 336\n");
+ snprintf(holder, sizeof holder, "/%-10d/\n", 336);
+ asprintf(&h, "/%-10d/\n", 336);
+ printf("/%-10d/\n", 336);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+
+/* floating points */
+
+ printf("/%%f/, 1234.56\n");
+ snprintf(holder, sizeof holder, "/%f/\n", 1234.56);
+ asprintf(&h, "/%f/\n", 1234.56);
+ printf("/%f/\n", 1234.56);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%e/, 1234.56\n");
+ snprintf(holder, sizeof holder, "/%e/\n", 1234.56);
+ asprintf(&h, "/%e/\n", 1234.56);
+ printf("/%e/\n", 1234.56);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%4.2f/, 1234.56\n");
+ snprintf(holder, sizeof holder, "/%4.2f/\n", 1234.56);
+ asprintf(&h, "/%4.2f/\n", 1234.56);
+ printf("/%4.2f/\n", 1234.56);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%3.1f/, 1234.56\n");
+ snprintf(holder, sizeof holder, "/%3.1f/\n", 1234.56);
+ asprintf(&h, "/%3.1f/\n", 1234.56);
+ printf("/%3.1f/\n", 1234.56);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%10.3f/, 1234.56\n");
+ snprintf(holder, sizeof holder, "/%10.3f/\n", 1234.56);
+ asprintf(&h, "/%10.3f/\n", 1234.56);
+ printf("/%10.3f/\n", 1234.56);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%10.3e/, 1234.56\n");
+ snprintf(holder, sizeof holder, "/%10.3e/\n", 1234.56);
+ asprintf(&h, "/%10.3e/\n", 1234.56);
+ printf("/%10.3e/\n", 1234.56);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%+4.2f/, 1234.56\n");
+ snprintf(holder, sizeof holder, "/%+4.2f/\n", 1234.56);
+ asprintf(&h, "/%+4.2f/\n", 1234.56);
+ printf("/%+4.2f/\n", 1234.56);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%010.2f/, 1234.56\n");
+ snprintf(holder, sizeof holder, "/%010.2f/\n", 1234.56);
+ asprintf(&h, "/%010.2f/\n", 1234.56);
+ printf("/%010.2f/\n", 1234.56);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+#define BLURB "Outstanding acting !"
+/* strings precisions */
+
+ printf("/%%2s/, \"%s\"\n", BLURB);
+ snprintf(holder, sizeof holder, "/%2s/\n", BLURB);
+ asprintf(&h, "/%2s/\n", BLURB);
+ printf("/%2s/\n", BLURB);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%22s/ %s\n", BLURB);
+ snprintf(holder, sizeof holder, "/%22s/\n", BLURB);
+ asprintf(&h, "/%22s/\n", BLURB);
+ printf("/%22s/\n", BLURB);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%22.5s/ %s\n", BLURB);
+ snprintf(holder, sizeof holder, "/%22.5s/\n", BLURB);
+ asprintf(&h, "/%22.5s/\n", BLURB);
+ printf("/%22.5s/\n", BLURB);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%-22.5s/ %s\n", BLURB);
+ snprintf(holder, sizeof holder, "/%-22.5s/\n", BLURB);
+ asprintf(&h, "/%-22.5s/\n", BLURB);
+ printf("/%-22.5s/\n", BLURB);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+/* see some flags */
+
+ printf("%%x %%X %%#x, 31, 31, 31\n");
+ snprintf(holder, sizeof holder, "%x %X %#x\n", 31, 31, 31);
+ asprintf(&h, "%x %X %#x\n", 31, 31, 31);
+ printf("%x %X %#x\n", 31, 31, 31);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("**%%d**%% d**%% d**, 42, 42, -42\n");
+ snprintf(holder, sizeof holder, "**%d**% d**% d**\n", 42, 42, -42);
+ asprintf(&h, "**%d**% d**% d**\n", 42, 42, -42);
+ printf("**%d**% d**% d**\n", 42, 42, -42);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+/* other flags */
+
+ printf("/%%g/, 31.4\n");
+ snprintf(holder, sizeof holder, "/%g/\n", 31.4);
+ asprintf(&h, "/%g/\n", 31.4);
+ printf("/%g/\n", 31.4);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%.6g/, 31.4\n");
+ snprintf(holder, sizeof holder, "/%.6g/\n", 31.4);
+ asprintf(&h, "/%.6g/\n", 31.4);
+ printf("/%.6g/\n", 31.4);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%.1G/, 31.4\n");
+ snprintf(holder, sizeof holder, "/%.1G/\n", 31.4);
+ asprintf(&h, "/%.1G/\n", 31.4);
+ printf("/%.1G/\n", 31.4);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%.1G/, 3100000000.4\n");
+ snprintf(holder, sizeof holder, "/%.1G/\n", 3100000000.4);
+ asprintf(&h, "/%.1G/\n", 3100000000.4);
+ printf("/%.1G/\n", 3100000000.4);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("abc%%n\n");
+ printf("abc%n", &i); printf("%d\n", i);
+ snprintf(holder, sizeof holder, "abc%n", &i);
+ printf("%s", holder); printf("%d\n\n", i);
+ asprintf(&h, "abc%n", &i);
+ printf("%s", h); printf("%d\n\n", i);
+
+ printf("%%*.*s --> 10.10\n");
+ snprintf(holder, sizeof holder, "%*.*s\n", 10, 10, BLURB);
+ asprintf(&h, "%*.*s\n", 10, 10, BLURB);
+ printf("%*.*s\n", 10, 10, BLURB);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("%%%%%%%%\n");
+ snprintf(holder, sizeof holder, "%%%%\n");
+ asprintf(&h, "%%%%\n");
+ printf("%%%%\n");
+ printf("%s", holder);
+ printf("%s\n", h);
+
+#define BIG "Hello this is a too big string for the buffer"
+/* printf("A buffer to small of 10, trying to put this:\n");*/
+ printf("<%%>, %s\n", BIG);
+ i = snprintf(holder, 10, "%s\n", BIG);
+ i = asprintf(&h, "%s", BIG);
+ printf("<%s>\n", BIG);
+ printf("<%s>\n", holder);
+ printf("<%s>\n\n", h);
+
+ printf ("<%%p> vsnprintf\n");
+ i = snprintf(holder, 100, "%p", vsnprintf);
+ i = asprintf(&h, "%p", vsnprintf);
+ printf("<%p>\n", vsnprintf);
+ printf("<%s>\n", holder);
+ printf("<%s>\n\n", h);
+
+ printf ("<%%lu> LONG_MAX+1\n");
+ i = snprintf(holder, 100, "%lu", (unsigned long)(LONG_MAX)+1);
+ i = asprintf(&h, "%lu", (unsigned long)(LONG_MAX)+1);
+ printf("<%lu>\n", (unsigned long)(LONG_MAX)+1);
+ printf("<%s>\n", holder);
+ printf("<%s>\n\n", h);
+
+#ifdef HAVE_LONG_LONG
+ printf ("<%%llu> LLONG_MAX+1\n");
+ i = snprintf(holder, 100, "%llu", (unsigned long long)(LLONG_MAX)+1);
+ i = asprintf(&h, "%llu", (unsigned long long)(LLONG_MAX)+1);
+ printf("<%llu>\n", (unsigned long long)(LLONG_MAX)+1);
+ printf("<%s>\n", holder);
+ printf("<%s>\n\n", h);
+#endif
+
+#ifdef HAVE_LONG_DOUBLE
+ printf ("<%%6.2LE> 42.42\n");
+ i = snprintf(holder, 100, "%6.2LE", (long double)42.42);
+ i = asprintf(&h, "%6.2LE", (long double)42.42);
+ printf ("<%6.2LE>\n", (long double)42.42);
+ printf ("<%s>\n", holder);
+ printf ("<%s>\n\n", h);
+#endif
+
+#ifdef HAVE_PRINTF_A_FORMAT
+ printf ("<%%6.2A> 42.42\n");
+ i = snprintf(holder, 100, "%6.2A", 42.42);
+ i = asprintf(&h, "%6.2A", 42.42);
+ printf ("<%6.2A>\n", 42.42);
+ printf ("<%s>\n", holder);
+ printf ("<%s>\n\n", h);
+
+ printf ("<%%6.2LA> 42.42\n");
+ i = snprintf(holder, 100, "%6.2LA", (long double)42.42);
+ i = asprintf(&h, "%6.2LA", (long double)42.42);
+ printf ("<%6.2LA>\n", (long double)42.42);
+ printf ("<%s>\n", holder);
+ printf ("<%s>\n\n", h);
+#endif
+
+ printf ("<%%.10240f> DBL_MAX\n");
+ si = snprintf(holder, 100, "%.10240f", DBL_MAX);
+ ai = asprintf(&h, "%.10240f", DBL_MAX);
+ printf ("<%.10240f>\n", DBL_MAX);
+ printf ("<%d> <%s>\n", si, holder);
+ printf ("<%d> <%s>\n\n", ai, h);
+
+ printf ("<%%.10240Lf> LDBL_MAX\n");
+ si = snprintf(holder, 100, "%.10240Lf", (long double)LDBL_MAX);
+ ai = asprintf(&h, "%.10240Lf", (long double)LDBL_MAX);
+ printf ("<%.10240Lf>\n", (long double)LDBL_MAX);
+ printf ("<%d> <%s>\n", si, holder);
+ printf ("<%d> <%s>\n\n", ai, h);
+
+ /* huh? */
+ printf("/%%g/, 421.2345\n");
+ snprintf(holder, sizeof holder, "/%g/\n", 421.2345);
+ asprintf(&h, "/%g/\n", 421.2345);
+ printf("/%g/\n", 421.2345);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%g/, 4214.2345\n");
+ snprintf(holder, sizeof holder, "/%g/\n", 4214.2345);
+ asprintf(&h, "/%g/\n", 4214.2345);
+ printf("/%g/\n", 4214.2345);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%.5g/, 4214.2345\n");
+ snprintf(holder, sizeof holder, "/%.5g/\n", 4214.2345);
+ asprintf(&h, "/%.5g/\n", 4214.2345);
+ printf("/%.5g/\n", 4214.2345);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%.4g/, 4214.2345\n");
+ snprintf(holder, sizeof holder, "/%.4g/\n", 4214.2345);
+ asprintf(&h, "/%.4g/\n", 4214.2345);
+ printf("/%.4g/\n", 4214.2345);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%'ld %%'ld/, 12345, 1234567\n");
+ snprintf(holder, sizeof holder, "/%'ld %'ld/\n", 12345, 1234567);
+ asprintf(&h, "/%'ld %'ld/\n", 12345, 1234567);
+ printf("/%'ld %'ld/\n", 12345, 1234567);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%'ld %%'ld/, 336, 3336\n");
+ snprintf(holder, sizeof holder, "/%'ld %'ld/\n", 336, 3336);
+ asprintf(&h, "/%'ld %'ld/\n", 336, 3336);
+ printf("/%'ld %'ld/\n", 336, 3336);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%'ld %%'ld/, -42786, -142786\n");
+ snprintf(holder, sizeof holder, "/%'ld %'ld/\n", -42786, -142786);
+ asprintf(&h, "/%'ld %'ld/\n", -42786, -142786);
+ printf("/%'ld %'ld/\n", -42786, -142786);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%'f %%'f/, 421.2345, 421234.56789\n");
+ snprintf(holder, sizeof holder, "/%'f %'f/\n", 421.2345, 421234.56789);
+ asprintf(&h, "/%'f %'f/\n", 421.2345, 421234.56789);
+ printf("/%'f %'f/\n", 421.2345, 421234.56789);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%'f %%'f/, -421.2345, -421234.56789\n");
+ snprintf(holder, sizeof holder, "/%'f %'f/\n", -421.2345, -421234.56789);
+ asprintf(&h, "/%'f %'f/\n", -421.2345, -421234.56789);
+ printf("/%'f %'f/\n", -421.2345, -421234.56789);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%'g %%'g/, 421.2345, 421234.56789\n");
+ snprintf(holder, sizeof holder, "/%'g %'g/\n", 421.2345, 421234.56789);
+ asprintf(&h, "/%'g %'g/\n", 421.2345, 421234.56789);
+ printf("/%'g %'g/\n", 421.2345, 421234.56789);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ printf("/%%'g %%'g/, -421.2345, -421234.56789\n");
+ snprintf(holder, sizeof holder, "/%'g %'g/\n", -421.2345, -421234.56789);
+ asprintf(&h, "/%'g %'g/\n", -421.2345, -421234.56789);
+ printf("/%'g %'g/\n", -421.2345, -421234.56789);
+ printf("%s", holder);
+ printf("%s\n", h);
+#endif
+
+ printf("/%%'g/, 4213455.8392\n");
+ snprintf(holder, sizeof holder, "/%'g/\n", 4213455.8392);
+ asprintf(&h, "/%'g/\n", 4213455.8392);
+ printf("/%'g/\n", 4213455.8392);
+ printf("%s", holder);
+ printf("%s\n", h);
+
+ exit (0);
+}
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 10:35:03 +0000