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/*
* This file is part of VICE, the Versatile Commodore Emulator.
* See README for copyright notice.
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA.
*
*/
#include <stdio.h>
#include <string.h>
#include "dirport.h"
DIR *opendir (char *path)
{
APIRET ulrc;
ULONG cnt = 1;
DIR *dir;
char *name;
if (!(dir = (DIR*)calloc(1, sizeof(DIR)))) {
return NULL;
}
if (name = (char*)calloc(1, strlen(path) + 3)) {
strcat(strcpy(name, path),path[strlen(path) - 1] == '\\' ? "*" : "\\*");
dir->handle = HDIR_CREATE;
ulrc = DosFindFirst(name, &(dir->handle), _A_ANY, &(dir->buffer), sizeof(struct _FILEFINDBUF3), &cnt, FIL_STANDARD);
free(name);
}
if (!name || ulrc) {
DosFindClose (dir->handle);
free(dir);
dir = NULL;
}
return dir;
}
struct dirent *readdir (DIR *dir)
{
ULONG cnt = 1;
return DosFindNext (dir->handle, &(dir->buffer), sizeof(struct _FILEFINDBUF), &cnt) ? NULL : &(dir->buffer);
}
int closedir (DIR *dir)
{
APIRET ulrc = DosFindClose (dir->handle);
free(dir);
return (int)ulrc;
}
#ifndef HAVE_SNPRINTF
/*
* What follows is a portable snprintf routine, written by Mark Martinec.
* See: http://www.ijs.si/software/snprintf/
snprintf.c
- a portable implementation of snprintf,
including vsnprintf.c, asnprintf, vasnprintf, asprintf, vasprintf
snprintf is a routine to convert numeric and string arguments to
formatted strings. It is similar to sprintf(3) provided in a system's
C library, yet it requires an additional argument - the buffer size -
and it guarantees never to store anything beyond the given buffer,
regardless of the format or arguments to be formatted. Some newer
operating systems do provide snprintf in their C library, but many do
not or do provide an inadequate (slow or idiosyncratic) version, which
calls for a portable implementation of this routine.
Author
Mark Martinec <mark.martinec@ijs.si>, April 1999, June 2000
Copyright <20> 1999, Mark Martinec
*/
#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 <sys/types.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <stdarg.h>
#include <assert.h>
#include <errno.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) \
{ register 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*/\
register char *dd; register const char *ss; \
for (ss=(s), dd=(d); nn>0; nn--) *dd++ = *ss++; } }
#define fast_memset(d,c,n) \
{ register 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*/\
register char *dd; register 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
#if defined(NEED_VASPRINTF)
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 */
#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
/* declarations */
static char credits[] = "\n\
@(#)snprintf.c, v2.2: Mark Martinec, <mark.martinec@ijs.si>\n\
@(#)snprintf.c, v2.2: Copyright 1999, Mark Martinec. Frontier Artistic License applies.\n\
@(#)snprintf.c, v2.2: http://www.ijs.si/software/snprintf/\n";
#if defined(NEED_ASPRINTF)
int asprintf(char **ptr, const char *fmt, /*args*/ ...) {
va_list ap;
size_t str_m;
int str_l;
*ptr = NULL;
va_start(ap, fmt); /* measure the required size */
str_l = portable_vsnprintf(NULL, (size_t)0, fmt, ap);
va_end(ap);
assert(str_l >= 0); /* possible integer overflow if str_m > INT_MAX */
*ptr = (char *) malloc(str_m = (size_t)str_l + 1);
if (*ptr == NULL) { errno = ENOMEM; str_l = -1; }
else {
int str_l2;
va_start(ap, fmt);
str_l2 = portable_vsnprintf(*ptr, str_m, fmt, ap);
va_end(ap);
assert(str_l2 == str_l);
}
return str_l;
}
#endif
#if defined(NEED_VASPRINTF)
int vasprintf(char **ptr, const char *fmt, va_list ap) {
size_t str_m;
int str_l;
*ptr = NULL;
{ va_list ap2;
va_copy(ap2, ap); /* don't consume the original ap, we'll need it again */
str_l = portable_vsnprintf(NULL, (size_t)0, fmt, ap2);/*get required size*/
va_end(ap2);
}
assert(str_l >= 0); /* possible integer overflow if str_m > INT_MAX */
*ptr = (char *) malloc(str_m = (size_t)str_l + 1);
if (*ptr == NULL) { errno = ENOMEM; str_l = -1; }
else {
int str_l2 = portable_vsnprintf(*ptr, str_m, fmt, ap);
assert(str_l2 == str_l);
}
return str_l;
}
#endif
#if defined(NEED_ASNPRINTF)
int asnprintf (char **ptr, size_t str_m, const char *fmt, /*args*/ ...) {
va_list ap;
int str_l;
*ptr = NULL;
va_start(ap, fmt); /* measure the required size */
str_l = portable_vsnprintf(NULL, (size_t)0, fmt, ap);
va_end(ap);
assert(str_l >= 0); /* possible integer overflow if str_m > INT_MAX */
if ((size_t)str_l + 1 < str_m) str_m = (size_t)str_l + 1; /* truncate */
/* if str_m is 0, no buffer is allocated, just set *ptr to NULL */
if (str_m == 0) { /* not interested in resulting string, just return size */
} else {
*ptr = (char *) malloc(str_m);
if (*ptr == NULL) { errno = ENOMEM; str_l = -1; }
else {
int str_l2;
va_start(ap, fmt);
str_l2 = portable_vsnprintf(*ptr, str_m, fmt, ap);
va_end(ap);
assert(str_l2 == str_l);
}
}
return str_l;
}
#endif
#if defined(NEED_VASNPRINTF)
int vasnprintf (char **ptr, size_t str_m, const char *fmt, va_list ap) {
int str_l;
*ptr = NULL;
{ va_list ap2;
va_copy(ap2, ap); /* don't consume the original ap, we'll need it again */
str_l = portable_vsnprintf(NULL, (size_t)0, fmt, ap2);/*get required size*/
va_end(ap2);
}
assert(str_l >= 0); /* possible integer overflow if str_m > INT_MAX */
if ((size_t)str_l + 1 < str_m) str_m = (size_t)str_l + 1; /* truncate */
/* if str_m is 0, no buffer is allocated, just set *ptr to NULL */
if (str_m == 0) { /* not interested in resulting string, just return size */
} else {
*ptr = (char *) malloc(str_m);
if (*ptr == NULL) { errno = ENOMEM; str_l = -1; }
else {
int str_l2 = portable_vsnprintf(*ptr, str_m, fmt, ap);
assert(str_l2 == str_l);
}
}
return str_l;
}
#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 !!! */
const char *q = 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) {
size_t 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) {
size_t 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) {
size_t 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) {
size_t 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) {
size_t 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
#endif /* ndef HAVE_SNPRINTF */
/*
Local Variables:
tab-width: 3
end:
*/
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