* not used;
*/
-
-/* Define HAVE_SNPRINTF if your system already has snprintf and vsnprintf.
- *
- * If HAVE_SNPRINTF is defined this module will not produce code for
- * snprintf and vsnprintf, unless PREFER_PORTABLE_SNPRINTF is defined as well,
- * causing this portable version of snprintf to be called portable_snprintf
- * (and portable_vsnprintf).
- */
-/* #define HAVE_SNPRINTF */
-
-/* Define PREFER_PORTABLE_SNPRINTF if your system does have snprintf and
- * vsnprintf but you would prefer to use the portable routine(s) instead.
- * In this case the portable routine is declared as portable_snprintf
- * (and portable_vsnprintf) and a macro 'snprintf' (and 'vsnprintf')
- * is defined to expand to 'portable_v?snprintf' - see file snprintf.h .
- * Defining this macro is only useful if HAVE_SNPRINTF is also defined,
- * but does does no harm if defined nevertheless.
- */
-/* #define PREFER_PORTABLE_SNPRINTF */
-
-/* Define SNPRINTF_LONGLONG_SUPPORT if you want to support
- * data type (long long int) and length modifier 'll' (e.g. %lld).
- * If undefined, 'll' is recognized but treated as a single 'l'.
- *
- * If the system's sprintf does not handle 'll'
- * the SNPRINTF_LONGLONG_SUPPORT must not be defined!
- *
- * This is off by default as (long long int) is a language extension.
- */
-/* #define SNPRINTF_LONGLONG_SUPPORT */
-
-/* Define NEED_SNPRINTF_ONLY if you only need snprintf, and not vsnprintf.
- * If NEED_SNPRINTF_ONLY is defined, the snprintf will be defined directly,
- * otherwise both snprintf and vsnprintf routines will be defined
- * and snprintf will be a simple wrapper around vsnprintf, at the expense
- * of an extra procedure call.
- */
-/* #define NEED_SNPRINTF_ONLY */
-
/* Define NEED_V?ASN?PRINTF macros if you need library extension
* routines asprintf, vasprintf, asnprintf, vasnprintf respectively,
* and your system library does not provide them. They are all small
/* #define NEED_VASNPRINTF */
-/* Define the following macros if desired:
- * SOLARIS_COMPATIBLE, SOLARIS_BUG_COMPATIBLE,
- * HPUX_COMPATIBLE, HPUX_BUG_COMPATIBLE, LINUX_COMPATIBLE,
- * DIGITAL_UNIX_COMPATIBLE, DIGITAL_UNIX_BUG_COMPATIBLE,
- * PERL_COMPATIBLE, PERL_BUG_COMPATIBLE,
- *
- * - For portable applications it is best not to rely on peculiarities
- * of a given implementation so it may be best not to define any
- * of the macros that select compatibility and to avoid features
- * that vary among the systems.
- *
- * - Selecting compatibility with more than one operating system
- * is not strictly forbidden but is not recommended.
- *
- * - 'x'_BUG_COMPATIBLE implies 'x'_COMPATIBLE .
- *
- * - 'x'_COMPATIBLE refers to (and enables) a behaviour that is
- * documented in a sprintf man page on a given operating system
- * and actually adhered to by the system's sprintf (but not on
- * most other operating systems). It may also refer to and enable
- * a behaviour that is declared 'undefined' or 'implementation specific'
- * in the man page but a given implementation behaves predictably
- * in a certain way.
- *
- * - 'x'_BUG_COMPATIBLE refers to (and enables) a behaviour of system's sprintf
- * that contradicts the sprintf man page on the same operating system.
- *
- * - I do not claim that the 'x'_COMPATIBLE and 'x'_BUG_COMPATIBLE
- * conditionals take into account all idiosyncrasies of a particular
- * implementation, there may be other incompatibilities.
- */
-
-
/* ============================================= */
/* NO USER SERVICABLE PARTS FOLLOWING THIS POINT */
/* ============================================= */
-#define PORTABLE_SNPRINTF_VERSION_MAJOR 2
-#define PORTABLE_SNPRINTF_VERSION_MINOR 2
-
-#if defined(NEED_ASPRINTF) || defined(NEED_ASNPRINTF) || defined(NEED_VASPRINTF) || defined(NEED_VASNPRINTF)
-# if defined(NEED_SNPRINTF_ONLY)
-# undef NEED_SNPRINTF_ONLY
-# endif
-# if !defined(PREFER_PORTABLE_SNPRINTF)
-# define PREFER_PORTABLE_SNPRINTF
-# endif
-#endif
-
-#if defined(SOLARIS_BUG_COMPATIBLE) && !defined(SOLARIS_COMPATIBLE)
-#define SOLARIS_COMPATIBLE
-#endif
-
-#if defined(HPUX_BUG_COMPATIBLE) && !defined(HPUX_COMPATIBLE)
-#define HPUX_COMPATIBLE
-#endif
-
-#if defined(DIGITAL_UNIX_BUG_COMPATIBLE) && !defined(DIGITAL_UNIX_COMPATIBLE)
-#define DIGITAL_UNIX_COMPATIBLE
-#endif
-
-#if defined(PERL_BUG_COMPATIBLE) && !defined(PERL_COMPATIBLE)
-#define PERL_COMPATIBLE
-#endif
-
-#if defined(LINUX_BUG_COMPATIBLE) && !defined(LINUX_COMPATIBLE)
-#define LINUX_COMPATIBLE
-#endif
-
#include "src/portable.h" /* to get a working stdarg.h */
#include <sys/types.h>
#include <errno.h>
#include "xbt/str.h"
-#ifdef isdigit
-#undef isdigit
-#endif
-#define isdigit(c) ((c) >= '0' && (c) <= '9')
-
-/* For copying strings longer or equal to 'breakeven_point'
- * it is more efficient to call memcpy() than to do it inline.
- * The value depends mostly on the processor architecture,
- * but also on the compiler and its optimization capabilities.
- * The value is not critical, some small value greater than zero
- * will be just fine if you don't care to squeeze every drop
- * of performance out of the code.
- *
- * Small values favor memcpy, large values favor inline code.
- */
-#if defined(__alpha__) || defined(__alpha)
-# define breakeven_point 2 /* AXP (DEC Alpha) - gcc or cc or egcs */
-#endif
-#if defined(__i386__) || defined(__i386)
-# define breakeven_point 12 /* Intel Pentium/Linux - gcc 2.96 */
-#endif
-#if defined(__hppa)
-# define breakeven_point 10 /* HP-PA - gcc */
-#endif
-#if defined(__sparc__) || defined(__sparc)
-# define breakeven_point 33 /* Sun Sparc 5 - gcc 2.8.1 */
-#endif
-
-/* some other values of possible interest: */
- /* #define breakeven_point 8 *//* VAX 4000 - vaxc */
- /* #define breakeven_point 19 *//* VAX 4000 - gcc 2.7.0 */
-
-#ifndef breakeven_point
-# define breakeven_point 6 /* some reasonable one-size-fits-all value */
-#endif
-
-#define fast_memcpy(d,s,n) \
- { size_t nn = (size_t)(n); \
- if (nn >= breakeven_point) memcpy((d), (s), nn); \
- else if (nn > 0) { /* proc call overhead is worth only for large strings*/\
- char *dd; const char *ss; \
- for (ss=(s), dd=(d); nn>0; nn--) *dd++ = *ss++; } }
-
-#define fast_memset(d,c,n) \
- { size_t nn = (size_t)(n); \
- if (nn >= breakeven_point) memset((d), (int)(c), nn); \
- else if (nn > 0) { /* proc call overhead is worth only for large strings*/\
- char *dd; const int cc=(int)(c); \
- for (dd=(d); nn>0; nn--) *dd++ = cc; } }
-
-/* prototypes */
-
-
#if defined(NEED_ASPRINTF)
int asprintf(char **ptr, const char *fmt, /*args */ ...);
#endif
int vasprintf(char **ptr, const char *fmt, va_list ap);
#endif
-#if defined(NEED_ASNPRINTF)
-int asnprintf(char **ptr, size_t str_m, const char *fmt, /*args */ ...);
-#endif
-#if defined(NEED_VASNPRINTF)
-int vasnprintf(char **ptr, size_t str_m, const char *fmt, va_list ap);
-#endif
-
-#if defined(HAVE_SNPRINTF)
-/* declare our portable snprintf routine under name portable_snprintf */
-/* declare our portable vsnprintf routine under name portable_vsnprintf */
-# if defined(_MSC_VER) && (_MSC_VER >= 1400)
-# define portable_snprintf _snprintf
-# define portable_vsnprintf vsnprintf
-# else
-# define portable_snprintf snprintf
-# define portable_vsnprintf vsnprintf
-# endif
-#else
-/* declare our portable routines under names snprintf and vsnprintf */
-#define portable_snprintf snprintf
-#if !defined(NEED_SNPRINTF_ONLY)
-#define portable_vsnprintf vsnprintf
-#endif
-#endif
-
-#if !defined(HAVE_SNPRINTF) || defined(PREFER_PORTABLE_SNPRINTF)
-int portable_snprintf(char *str, size_t str_m, const char *fmt, /*args */
- ...);
-#if !defined(NEED_SNPRINTF_ONLY)
-int portable_vsnprintf(char *str, size_t str_m, const char *fmt,
- va_list ap);
-#endif
-#endif
/* FIXME: better place */
#include "xbt/sysdep.h"
}
#endif
-/*
- * If the system does have snprintf and the portable routine is not
- * specifically required, this module produces no code for snprintf/vsnprintf.
- */
-#if !defined(HAVE_SNPRINTF) || defined(PREFER_PORTABLE_SNPRINTF)
-
-#if !defined(NEED_SNPRINTF_ONLY)
-int portable_snprintf(char *str, size_t str_m, const char *fmt, /*args */
- ...)
-{
- va_list ap;
- int str_l;
-
- va_start(ap, fmt);
- str_l = portable_vsnprintf(str, str_m, fmt, ap);
- va_end(ap);
- return str_l;
-}
-#endif
-
-#if defined(NEED_SNPRINTF_ONLY)
-int portable_snprintf(char *str, size_t str_m, const char *fmt, /*args */
- ...)
-{
-#else
-int portable_vsnprintf(char *str, size_t str_m, const char *fmt,
- va_list ap)
-{
-#endif
-
-#if defined(NEED_SNPRINTF_ONLY)
- va_list ap;
-#endif
- size_t str_l = 0;
- const char *p = fmt;
-
- /* In contrast with POSIX, the ISO C99 now says
- * that str can be NULL and str_m can be 0.
- * This is more useful than the old: if (str_m < 1) return -1; */
-
-#if defined(NEED_SNPRINTF_ONLY)
- va_start(ap, fmt);
-#endif
- if (!p)
- p = "";
- while (*p) {
- if (*p != '%') {
- /* if (str_l < str_m) str[str_l++] = *p++; -- this would be sufficient */
- /* but the following code achieves better performance for cases
- * where format string is long and contains few conversions */
- const char *q = strchr(p + 1, '%');
- size_t n = !q ? strlen(p) : (q - p);
- if (str_l < str_m) {
- size_t avail = str_m - str_l;
- fast_memcpy(str + str_l, p, (n > avail ? avail : n));
- }
- p += n;
- str_l += n;
- } else {
- const char *starting_p;
- size_t min_field_width = 0, precision = 0;
- int zero_padding = 0, precision_specified = 0, justify_left = 0;
- int alternate_form = 0, force_sign = 0;
- int space_for_positive = 1; /* If both the ' ' and '+' flags appear,
- the ' ' flag should be ignored. */
- char length_modifier = '\0'; /* allowed values: \0, h, l, L */
- char tmp[32]; /* temporary buffer for simple numeric->string conversion */
-
- const char *str_arg; /* string address in case of string argument */
- size_t str_arg_l; /* natural field width of arg without padding
- and sign */
- unsigned char uchar_arg;
- /* unsigned char argument value - only defined for c conversion.
- N.B. standard explicitly states the char argument for
- the c conversion is unsigned */
-
- size_t number_of_zeros_to_pad = 0;
- /* number of zeros to be inserted for numeric conversions
- as required by the precision or minimal field width */
-
- size_t zero_padding_insertion_ind = 0;
- /* index into tmp where zero padding is to be inserted */
-
- char fmt_spec = '\0';
- /* current conversion specifier character */
-
- str_arg = credits; /* just to make compiler happy (defined but not used) */
- str_arg = NULL;
- starting_p = p;
- p++; /* skip '%' */
- /* parse flags */
- while (*p == '0' || *p == '-' || *p == '+' ||
- *p == ' ' || *p == '#' || *p == '\'') {
- switch (*p) {
- case '0':
- zero_padding = 1;
- break;
- case '-':
- justify_left = 1;
- break;
- case '+':
- force_sign = 1;
- space_for_positive = 0;
- break;
- case ' ':
- force_sign = 1;
- /* If both the ' ' and '+' flags appear, the ' ' flag should be ignored */
-#ifdef PERL_COMPATIBLE
- /* ... but in Perl the last of ' ' and '+' applies */
- space_for_positive = 1;
-#endif
- break;
- case '#':
- alternate_form = 1;
- break;
- case '\'':
- break;
- }
- p++;
- }
- /* If the '0' and '-' flags both appear, the '0' flag should be ignored. */
-
- /* parse field width */
- if (*p == '*') {
- int j;
- p++;
- j = va_arg(ap, int);
- if (j >= 0)
- min_field_width = j;
- else {
- min_field_width = -j;
- justify_left = 1;
- }
- } else if (isdigit((int) (*p))) {
- /* size_t could be wider than unsigned int;
- make sure we treat argument like common implementations do */
- unsigned int uj = *p++ - '0';
- while (isdigit((int) (*p)))
- uj = 10 * uj + (unsigned int) (*p++ - '0');
- min_field_width = uj;
- }
- /* parse precision */
- if (*p == '.') {
- p++;
- precision_specified = 1;
- if (*p == '*') {
- int j = va_arg(ap, int);
- p++;
- if (j >= 0)
- precision = j;
- else {
- precision_specified = 0;
- precision = 0;
- /* NOTE:
- * Solaris 2.6 man page claims that in this case the precision
- * should be set to 0. Digital Unix 4.0, HPUX 10 and BSD man page
- * claim that this case should be treated as unspecified precision,
- * which is what we do here.
- */
- }
- } else if (isdigit((int) (*p))) {
- /* size_t could be wider than unsigned int;
- make sure we treat argument like common implementations do */
- unsigned int uj = *p++ - '0';
- while (isdigit((int) (*p)))
- uj = 10 * uj + (unsigned int) (*p++ - '0');
- precision = uj;
- }
- }
- /* parse 'h', 'l' and 'll' length modifiers */
- if (*p == 'h' || *p == 'l') {
- length_modifier = *p;
- p++;
- if (length_modifier == 'l' && *p == 'l') { /* double l = long long */
-#ifdef SNPRINTF_LONGLONG_SUPPORT
- length_modifier = '2'; /* double l encoded as '2' */
-#else
- length_modifier = 'l'; /* treat it as a single 'l' */
-#endif
- p++;
- }
- }
- fmt_spec = *p;
- /* common synonyms: */
- switch (fmt_spec) {
- case 'i':
- fmt_spec = 'd';
- break;
- case 'D':
- fmt_spec = 'd';
- length_modifier = 'l';
- break;
- case 'U':
- fmt_spec = 'u';
- length_modifier = 'l';
- break;
- case 'O':
- fmt_spec = 'o';
- length_modifier = 'l';
- break;
- default:
- break;
- }
- /* get parameter value, do initial processing */
- switch (fmt_spec) {
- case '%': /* % behaves similar to 's' regarding flags and field widths */
- case 'c': /* c behaves similar to 's' regarding flags and field widths */
- case 's':
- length_modifier = '\0'; /* wint_t and wchar_t not supported */
- /* the result of zero padding flag with non-numeric conversion specifier */
- /* is undefined. Solaris and HPUX 10 does zero padding in this case, */
- /* Digital Unix and Linux does not. */
-#if !defined(SOLARIS_COMPATIBLE) && !defined(HPUX_COMPATIBLE)
- zero_padding = 0; /* turn zero padding off for string conversions */
-#endif
- str_arg_l = 1;
- switch (fmt_spec) {
- case '%':
- str_arg = p;
- break;
- case 'c':{
- int j = va_arg(ap, int);
- uchar_arg = (unsigned char) j; /* standard demands unsigned char */
- str_arg = (const char *) &uchar_arg;
- break;
- }
- case 's':
- str_arg = va_arg(ap, const char *);
- if (!str_arg)
- str_arg_l = 0;
- /* make sure not to address string beyond the specified precision !!! */
- else if (!precision_specified)
- str_arg_l = strlen(str_arg);
- /* truncate string if necessary as requested by precision */
- else if (precision == 0)
- str_arg_l = 0;
- else {
- /* memchr on HP does not like n > 2^31 !!! */
- char *q = (char *) memchr(str_arg, '\0',
- precision <=
- 0x7fffffff ? precision : 0x7fffffff);
- str_arg_l = !q ? precision : (q - str_arg);
- }
- break;
- default:
- break;
- }
- break;
- case 'd':
- case 'u':
- case 'o':
- case 'x':
- case 'X':
- case 'p':{
- /* NOTE: the u, o, x, X and p conversion specifiers imply
- the value is unsigned; d implies a signed value */
-
- int arg_sign = 0;
- /* 0 if numeric argument is zero (or if pointer is NULL for 'p'),
- +1 if greater than zero (or nonzero for unsigned arguments),
- -1 if negative (unsigned argument is never negative) */
-
- int int_arg = 0;
- unsigned int uint_arg = 0;
- /* only defined for length modifier h, or for no length modifiers */
-
- long int long_arg = 0;
- unsigned long int ulong_arg = 0;
- /* only defined for length modifier l */
-
- void *ptr_arg = NULL;
- /* pointer argument value -only defined for p conversion */
-
-#ifdef SNPRINTF_LONGLONG_SUPPORT
- long long int long_long_arg = 0;
- unsigned long long int ulong_long_arg = 0;
- /* only defined for length modifier ll */
-#endif
- if (fmt_spec == 'p') {
- /* HPUX 10: An l, h, ll or L before any other conversion character
- * (other than d, i, u, o, x, or X) is ignored.
- * Digital Unix:
- * not specified, but seems to behave as HPUX does.
- * Solaris: If an h, l, or L appears before any other conversion
- * specifier (other than d, i, u, o, x, or X), the behavior
- * is undefined. (Actually %hp converts only 16-bits of address
- * and %llp treats address as 64-bit data which is incompatible
- * with (void *) argument on a 32-bit system).
- */
-#ifdef SOLARIS_COMPATIBLE
-# ifdef SOLARIS_BUG_COMPATIBLE
- /* keep length modifiers even if it represents 'll' */
-# else
- if (length_modifier == '2')
- length_modifier = '\0';
-# endif
-#else
- length_modifier = '\0';
-#endif
- ptr_arg = va_arg(ap, void *);
- if (ptr_arg != NULL)
- arg_sign = 1;
- } else if (fmt_spec == 'd') { /* signed */
- switch (length_modifier) {
- case '\0':
- case 'h':
- /* It is non-portable to specify a second argument of char or short
- * to va_arg, because arguments seen by the called function
- * are not char or short. C converts char and short arguments
- * to int before passing them to a function.
- */
- int_arg = va_arg(ap, int);
- if (int_arg > 0)
- arg_sign = 1;
- else if (int_arg < 0)
- arg_sign = -1;
- break;
- case 'l':
- long_arg = va_arg(ap, long int);
- if (long_arg > 0)
- arg_sign = 1;
- else if (long_arg < 0)
- arg_sign = -1;
- break;
-#ifdef SNPRINTF_LONGLONG_SUPPORT
- case '2':
- long_long_arg = va_arg(ap, long long int);
- if (long_long_arg > 0)
- arg_sign = 1;
- else if (long_long_arg < 0)
- arg_sign = -1;
- break;
-#endif
- }
- } else { /* unsigned */
- switch (length_modifier) {
- case '\0':
- case 'h':
- uint_arg = va_arg(ap, unsigned int);
- if (uint_arg)
- arg_sign = 1;
- break;
- case 'l':
- ulong_arg = va_arg(ap, unsigned long int);
- if (ulong_arg)
- arg_sign = 1;
- break;
-#ifdef SNPRINTF_LONGLONG_SUPPORT
- case '2':
- ulong_long_arg = va_arg(ap, unsigned long long int);
- if (ulong_long_arg)
- arg_sign = 1;
- break;
-#endif
- }
- }
- str_arg = tmp;
- str_arg_l = 0;
- /* NOTE:
- * For d, i, u, o, x, and X conversions, if precision is specified,
- * the '0' flag should be ignored. This is so with Solaris 2.6,
- * Digital UNIX 4.0, HPUX 10, Linux, FreeBSD, NetBSD; but not with Perl.
- */
-#ifndef PERL_COMPATIBLE
- if (precision_specified)
- zero_padding = 0;
-#endif
- if (fmt_spec == 'd') {
- if (force_sign && arg_sign >= 0)
- tmp[str_arg_l++] = space_for_positive ? ' ' : '+';
- /* leave negative numbers for sprintf to handle,
- to avoid handling tricky cases like (short int)(-32768) */
-#ifdef LINUX_COMPATIBLE
- } else if (fmt_spec == 'p' && force_sign && arg_sign > 0) {
- tmp[str_arg_l++] = space_for_positive ? ' ' : '+';
-#endif
- } else if (alternate_form) {
- if (arg_sign != 0 && (fmt_spec == 'x' || fmt_spec == 'X')) {
- tmp[str_arg_l++] = '0';
- tmp[str_arg_l++] = fmt_spec;
- }
- /* alternate form should have no effect for p conversion, but ... */
-#ifdef HPUX_COMPATIBLE
- else if (fmt_spec == 'p'
- /* HPUX 10: for an alternate form of p conversion,
- * a nonzero result is prefixed by 0x. */
-#ifndef HPUX_BUG_COMPATIBLE
- /* Actually it uses 0x prefix even for a zero value. */
- && arg_sign != 0
-#endif
- ) {
- tmp[str_arg_l++] = '0';
- tmp[str_arg_l++] = 'x';
- }
-#endif
- }
- zero_padding_insertion_ind = str_arg_l;
- if (!precision_specified)
- precision = 1; /* default precision is 1 */
- if (precision == 0 && arg_sign == 0
-#if defined(HPUX_BUG_COMPATIBLE) || defined(LINUX_COMPATIBLE)
- && fmt_spec != 'p'
- /* HPUX 10 man page claims: With conversion character p the result of
- * converting a zero value with a precision of zero is a null string.
- * Actually HP returns all zeroes, and Linux returns "(nil)". */
-#endif
- ) {
- /* converted to null string */
- /* When zero value is formatted with an explicit precision 0,
- the resulting formatted string is empty (d, i, u, o, x, X, p). */
- } else {
- char f[5];
- int f_l = 0;
- f[f_l++] = '%'; /* construct a simple format string for sprintf */
- if (!length_modifier) {
- } else if (length_modifier == '2') {
- f[f_l++] = 'l';
- f[f_l++] = 'l';
- } else
- f[f_l++] = length_modifier;
- f[f_l++] = fmt_spec;
- f[f_l++] = '\0';
- if (fmt_spec == 'p')
- str_arg_l += sprintf(tmp + str_arg_l, f, ptr_arg);
- else if (fmt_spec == 'd') { /* signed */
- switch (length_modifier) {
- case '\0':
- case 'h':
- str_arg_l += sprintf(tmp + str_arg_l, f, int_arg);
- break;
- case 'l':
- str_arg_l += sprintf(tmp + str_arg_l, f, long_arg);
- break;
-#ifdef SNPRINTF_LONGLONG_SUPPORT
- case '2':
- str_arg_l += sprintf(tmp + str_arg_l, f, long_long_arg);
- break;
-#endif
- }
- } else { /* unsigned */
- switch (length_modifier) {
- case '\0':
- case 'h':
- str_arg_l += sprintf(tmp + str_arg_l, f, uint_arg);
- break;
- case 'l':
- str_arg_l += sprintf(tmp + str_arg_l, f, ulong_arg);
- break;
-#ifdef SNPRINTF_LONGLONG_SUPPORT
- case '2':
- str_arg_l += sprintf(tmp + str_arg_l, f, ulong_long_arg);
- break;
-#endif
- }
- }
- /* include the optional minus sign and possible "0x"
- in the region before the zero padding insertion point */
- if (zero_padding_insertion_ind < str_arg_l &&
- tmp[zero_padding_insertion_ind] == '-') {
- zero_padding_insertion_ind++;
- }
- if (zero_padding_insertion_ind + 1 < str_arg_l &&
- tmp[zero_padding_insertion_ind] == '0' &&
- (tmp[zero_padding_insertion_ind + 1] == 'x' ||
- tmp[zero_padding_insertion_ind + 1] == 'X')) {
- zero_padding_insertion_ind += 2;
- }
- }
- {
- size_t num_of_digits = str_arg_l - zero_padding_insertion_ind;
- if (alternate_form && fmt_spec == 'o'
-#ifdef HPUX_COMPATIBLE /* ("%#.o",0) -> "" */
- && (str_arg_l > 0)
-#endif
-#ifdef DIGITAL_UNIX_BUG_COMPATIBLE /* ("%#o",0) -> "00" */
-#else
- /* unless zero is already the first character */
- && !(zero_padding_insertion_ind < str_arg_l
- && tmp[zero_padding_insertion_ind] == '0')
-#endif
- ) { /* assure leading zero for alternate-form octal numbers */
- if (!precision_specified || precision < num_of_digits + 1) {
- /* precision is increased to force the first character to be zero,
- except if a zero value is formatted with an explicit precision
- of zero */
- precision = num_of_digits + 1;
- precision_specified = 1;
- }
- }
- /* zero padding to specified precision? */
- if (num_of_digits < precision)
- number_of_zeros_to_pad = precision - num_of_digits;
- }
- /* zero padding to specified minimal field width? */
- if (!justify_left && zero_padding) {
- int n = min_field_width - (str_arg_l + number_of_zeros_to_pad);
- if (n > 0)
- number_of_zeros_to_pad += n;
- }
- break;
- }
- default: /* unrecognized conversion specifier, keep format string as-is */
- zero_padding = 0; /* turn zero padding off for non-numeric convers. */
-#ifndef DIGITAL_UNIX_COMPATIBLE
- justify_left = 1;
- min_field_width = 0; /* reset flags */
-#endif
-#if defined(PERL_COMPATIBLE) || defined(LINUX_COMPATIBLE)
- /* keep the entire format string unchanged */
- str_arg = starting_p;
- str_arg_l = p - starting_p;
- /* well, not exactly so for Linux, which does something inbetween,
- * and I don't feel an urge to imitate it: "%+++++hy" -> "%+y" */
-#else
- /* discard the unrecognized conversion, just keep *
- * the unrecognized conversion character */
- str_arg = p;
- str_arg_l = 0;
-#endif
- if (*p)
- str_arg_l++; /* include invalid conversion specifier unchanged
- if not at end-of-string */
- break;
- }
- if (*p)
- p++; /* step over the just processed conversion specifier */
- /* insert padding to the left as requested by min_field_width;
- this does not include the zero padding in case of numerical conversions */
- if (!justify_left) { /* left padding with blank or zero */
- int n = min_field_width - (str_arg_l + number_of_zeros_to_pad);
- if (n > 0) {
- if (str_l < str_m) {
- int avail = str_m - str_l;
- fast_memset(str + str_l, (zero_padding ? '0' : ' '),
- (n > avail ? avail : n));
- }
- str_l += n;
- }
- }
- /* zero padding as requested by the precision or by the minimal field width
- * for numeric conversions required? */
- if (number_of_zeros_to_pad <= 0) {
- /* will not copy first part of numeric right now, *
- * force it to be copied later in its entirety */
- zero_padding_insertion_ind = 0;
- } else {
- /* insert first part of numerics (sign or '0x') before zero padding */
- int n = zero_padding_insertion_ind;
- if (n > 0) {
- if (str_l < str_m) {
- int avail = str_m - str_l;
- fast_memcpy(str + str_l, str_arg, (n > avail ? avail : n));
- }
- str_l += n;
- }
- /* insert zero padding as requested by the precision or min field width */
- n = number_of_zeros_to_pad;
- if (n > 0) {
- if (str_l < str_m) {
- int avail = str_m - str_l;
- fast_memset(str + str_l, '0', (n > avail ? avail : n));
- }
- str_l += n;
- }
- }
- /* insert formatted string
- * (or as-is conversion specifier for unknown conversions) */
- {
- int n = str_arg_l - zero_padding_insertion_ind;
- if (n > 0) {
- if (str_l < str_m) {
- int avail = str_m - str_l;
- fast_memcpy(str + str_l, str_arg + zero_padding_insertion_ind,
- (n > avail ? avail : n));
- }
- str_l += n;
- }
- }
- /* insert right padding */
- if (justify_left) { /* right blank padding to the field width */
- int n = min_field_width - (str_arg_l + number_of_zeros_to_pad);
- if (n > 0) {
- if (str_l < str_m) {
- int avail = str_m - str_l;
- fast_memset(str + str_l, ' ', (n > avail ? avail : n));
- }
- str_l += n;
- }
- }
- }
- }
-#if defined(NEED_SNPRINTF_ONLY)
- va_end(ap);
-#endif
- if (str_m > 0) { /* make sure the string is null-terminated
- even at the expense of overwriting the last character
- (shouldn't happen, but just in case) */
- str[str_l <= str_m - 1 ? str_l : str_m - 1] = '\0';
- }
- /* Return the number of characters formatted (excluding trailing null
- * character), that is, the number of characters that would have been
- * written to the buffer if it were large enough.
- *
- * The value of str_l should be returned, but str_l is of unsigned type
- * size_t, and snprintf is int, possibly leading to an undetected
- * integer overflow, resulting in a negative return value, which is illegal.
- * Both XSH5 and ISO C99 (at least the draft) are silent on this issue.
- * Should errno be set to EOVERFLOW and EOF returned in this case???
- */
- return (int) str_l;
-}
-#endif
char *bvprintf(const char *fmt, va_list ap)
