-/* Copyright (c) 2005-2010, 2012-2015. The SimGrid Team.
+/* Copyright (c) 2005-2019. The SimGrid Team.
* All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* If not, I'll be glad to provide one.
*
* FEATURES
- * - careful adherence to specs regarding flags, field width and precision;
+ * - careful adherence to specs regarding flags, field width and precision
* - good performance for large string handling (large format, large
* argument or large paddings). Performance is similar to system's sprintf
* and in several cases significantly better (make sure you compile with
* optimizations turned on, tell the compiler the code is strict ANSI
- * if necessary to give it more freedom for optimizations);
- * - return value semantics per ISO/IEC 9899:1999 ("ISO C99");
- * - written in standard ISO/ANSI C - requires an ANSI C compiler.
+ * if necessary to give it more freedom for optimizations)
+ * - return value semantics per ISO/IEC 9899:1999 ("ISO C99")
+ * - written in standard ISO/ANSI C - requires an ANSI C compiler
*
- * SUPPORTED CONVERSION SPECIFIERS AND DATA TYPES
- *
- * This snprintf only supports the following conversion specifiers:
- * s, c, d, u, o, x, X, p (and synonyms: i, D, U, O - see below)
- * with flags: '-', '+', ' ', '0' and '#'.
- * An asterisk is supported for field width as well as precision.
- *
- * Length modifiers 'h' (short int), 'l' (long int),
- * and 'll' (long long int) are supported.
- * NOTE:
- * If macro SNPRINTF_LONGLONG_SUPPORT is not defined (default) the
- * length modifier 'll' is recognized but treated the same as 'l',
- * which may cause argument value truncation! Defining
- * SNPRINTF_LONGLONG_SUPPORT requires that your system's sprintf also
- * handles length modifier 'll'. long long int is a language extension
- * which may not be portable.
- *
- * Conversion of numeric data (conversion specifiers d, u, o, x, X, p)
- * with length modifiers (none or h, l, ll) is left to the system routine
- * sprintf, but all handling of flags, field width and precision as well as
- * c and s conversions is done very carefully by this portable routine.
- * If a string precision (truncation) is specified (e.g. %.8s) it is
- * guaranteed the string beyond the specified precision will not be referenced.
- *
- * Length modifiers h, l and ll are ignored for c and s conversions (data
- * types wint_t and wchar_t are not supported).
- *
- * The following common synonyms for conversion characters are supported:
- * - i is a synonym for d
- * - D is a synonym for ld, explicit length modifiers are ignored
- * - U is a synonym for lu, explicit length modifiers are ignored
- * - O is a synonym for lo, explicit length modifiers are ignored
- * The D, O and U conversion characters are nonstandard, they are supported
- * for backward compatibility only, and should not be used for new code.
- *
- * The following is specifically NOT supported:
- * - flag ' (thousands' grouping character) is recognized but ignored
- * - numeric conversion specifiers: f, e, E, g, G and synonym F,
- * as well as the new a and A conversion specifiers
- * - length modifier 'L' (long double) and 'q' (quad - use 'll' instead)
- * - wide character/string conversions: lc, ls, and nonstandard
- * synonyms C and S
- * - writeback of converted string length: conversion character n
- * - the n$ specification for direct reference to n-th argument
- * - locales
- *
- * It is permitted for str_m to be zero, and it is permitted to specify NULL
- * pointer for resulting string argument if str_m is zero (as per ISO C99).
- *
- * The return value is the number of characters which would be generated
- * for the given input, excluding the trailing null. If this value
- * is greater or equal to str_m, not all characters from the result
- * have been stored in str, output bytes beyond the (str_m-1) -th character
- * are discarded. If str_m is greater than zero it is guaranteed
- * the resulting string will be null-terminated.
- *
- * NOTE that this matches the ISO C99, OpenBSD, and GNU C library 2.1,
- * but is different from some older and vendor implementations,
- * and is also different from XPG, XSH5, SUSv2 specifications.
- * For historical discussion on changes in the semantics and standards
- * of snprintf see printf(3) man page in the Linux programmers manual.
+ * [...]
*
* Routines asprintf and vasprintf return a pointer (in the ptr argument)
* to a buffer sufficiently large to hold the resulting string. This pointer
* will return -1 and set ptr to be a NULL pointer. These two routines are a
* GNU C library extensions (glibc).
*
- * Routines asnprintf and vasnprintf are similar to asprintf and vasprintf,
- * yet, like snprintf and vsnprintf counterparts, will write at most str_m-1
- * characters into the allocated output string, the last character in the
- * allocated buffer then gets the terminating null. If the formatted string
- * length (the return value) is greater than or equal to the str_m argument,
- * the resulting string was truncated and some of the formatted characters
- * were discarded. These routines present a handy way to limit the amount
- * of allocated memory to some sane value.
- *
* AVAILABILITY
* http://www.ijs.si/software/snprintf/
- *
- * REVISION HISTORY
- * 1999-04 V0.9 Mark Martinec
- * - initial version, some modifications after comparing printf
- * man pages for Digital Unix 4.0, Solaris 2.6 and HPUX 10,
- * and checking how Perl handles sprintf (differently!);
- * 1999-04-09 V1.0 Mark Martinec <mark.martinec@ijs.si>
- * - added main test program, fixed remaining inconsistencies,
- * added optional (long long int) support;
- * 1999-04-12 V1.1 Mark Martinec <mark.martinec@ijs.si>
- * - support the 'p' conversion (pointer to void);
- * - if a string precision is specified
- * make sure the string beyond the specified precision
- * will not be referenced (e.g. by strlen);
- * 1999-04-13 V1.2 Mark Martinec <mark.martinec@ijs.si>
- * - support synonyms %D=%ld, %U=%lu, %O=%lo;
- * - speed up the case of long format string with few conversions;
- * 1999-06-30 V1.3 Mark Martinec <mark.martinec@ijs.si>
- * - fixed runaway loop (eventually crashing when str_l wraps
- * beyond 2^31) while copying format string without
- * conversion specifiers to a buffer that is too short
- * (thanks to Edwin Young <edwiny@autonomy.com> for
- * spotting the problem);
- * - added macros PORTABLE_SNPRINTF_VERSION_(MAJOR|MINOR)
- * to snprintf.h
- * 2000-02-14 V2.0 (never released) Mark Martinec <mark.martinec@ijs.si>
- * - relaxed license terms: The Artistic License now applies.
- * You may still apply the GNU GENERAL PUBLIC LICENSE
- * as was distributed with previous versions, if you prefer;
- * - changed REVISION HISTORY dates to use ISO 8601 date format;
- * - added vsnprintf (patch also independently proposed by
- * Caolan McNamara 2000-05-04, and Keith M Willenson 2000-06-01)
- * 2000-06-27 V2.1 Mark Martinec <mark.martinec@ijs.si>
- * - removed POSIX check for str_m<1; value 0 for str_m is
- * allowed by ISO C99 (and GNU C library 2.1) - (pointed out
- * on 2000-05-04 by Caolan McNamara, caolan@ csn dot ul dot ie).
- * Besides relaxed license this change in standards adherence
- * is the main reason to bump up the major version number;
- * - added nonstandard routines asnprintf, vasnprintf, asprintf,
- * vasprintf that dynamically allocate storage for the
- * resulting string; these routines are not compiled by default,
- * see comments where NEED_V?ASN?PRINTF macros are defined;
- * - autoconf contributed by Caolan McNamara
- * 2000-10-06 V2.2 Mark Martinec <mark.martinec@ijs.si>
- * - BUG FIX: the %c conversion used a temporary variable
- * that was no longer in scope when referenced,
- * possibly causing incorrect resulting character;
- * - BUG FIX: make precision and minimal field width unsigned
- * to handle huge values (2^31 <= n < 2^32) correctly;
- * also be more careful in the use of signed/unsigned/size_t
- * internal variables - probably more careful than many
- * vendor implementations, but there may still be a case
- * where huge values of str_m, precision or minimal field
- * could cause incorrect behaviour;
- * - use separate variables for signed/unsigned arguments,
- * and for short/int, long, and long long argument lengths
- * to avoid possible incompatibilities on certain
- * computer architectures. Also use separate variable
- * arg_sign to hold sign of a numeric argument,
- * to make code more transparent;
- * - some fiddling with zero padding and "0x" to make it
- * Linux compatible;
- * - systematically use macros fast_memcpy and fast_memset
- * instead of case-by-case hand optimization; determine some
- * breakeven string lengths for different architectures;
- * - terminology change: 'format' -> 'conversion specifier',
- * 'C9x' -> 'ISO/IEC 9899:1999 ("ISO C99")',
- * 'alternative form' -> 'alternate form',
- * 'data type modifier' -> 'length modifier';
- * - several comments rephrased and new ones added;
- * - make compiler not complain about 'credits' defined but
- * not used;
*/
-/* 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
- * wrapper routines around portable_vsnprintf. Defining any of the four
- * NEED_V?ASN?PRINTF macros automatically turns off NEED_SNPRINTF_ONLY
- * and turns on PREFER_PORTABLE_SNPRINTF.
- *
- * Watch for name conflicts with the system library if these routines
- * are already present there.
- *
- * NOTE: vasprintf and vasnprintf routines need va_copy() from stdarg.h, as
- * specified by C99, to be able to traverse the same list of arguments twice.
- * I don't know of any other standard and portable way of achieving the same.
- * With some versions of gcc you may use __va_copy(). You might even get away
- * with "ap2 = ap", in this case you must not call va_end(ap2) !
- * #define va_copy(ap2,ap) ap2 = ap
- */
-/* #define NEED_ASPRINTF */
-/* #define NEED_VASPRINTF */
-
-
-/* ============================================= */
-/* NO USER SERVICABLE PARTS FOLLOWING THIS POINT */
-/* ============================================= */
-
-#include "src/portable.h" /* to get a working stdarg.h */
-
-#include <sys/types.h>
-#include <string.h>
-#include <stdlib.h>
+/* find vasprintf in stdio.h */
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE
+#endif
#include <stdio.h>
-#include <stdarg.h>
+
+#include "xbt/sysdep.h" /* xbt_abort() */
+#include "src/internal_config.h" /* Do we need vasprintf? */
#include <assert.h>
-#include <errno.h>
-#include "xbt/str.h"
-#if defined(NEED_ASPRINTF)
-int asprintf(char **ptr, const char *fmt, /*args */ ...);
-#endif
-#if defined(NEED_VASPRINTF)
+#if !HAVE_VASPRINTF
+#include <stdarg.h> /* vsnprintf */
int vasprintf(char **ptr, const char *fmt, va_list ap);
-#endif
-
-
- /* FIXME: better place */
-#include "xbt/sysdep.h"
-
-/* declarations */
-
-/*
- Old copyright
- snprintf.c, v2.2: Mark Martinec, <mark.martinec@ijs.si>
- snprintf.c, v2.2: Copyright 1999, Mark Martinec. Frontier Artistic License applies.
- snprintf.c, v2.2: http://www.ijs.si/software/snprintf
-*/
-
-#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 *) xbt_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;
str_l = 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 */
+ xbt_assert(str_l >= 0); /* possible integer overflow if str_m > INT_MAX */
*ptr = (char *) xbt_malloc(str_m = (size_t) str_l + 1);
- if (*ptr == NULL) {
- errno = ENOMEM;
- str_l = -1;
- } else {
- int str_l2 = vsnprintf(*ptr, str_m, fmt, ap);
- assert(str_l2 == str_l);
- }
+
+ int str_l2 = vsnprintf(*ptr, str_m, fmt, ap);
+ assert(str_l2 == str_l);
+
return str_l;
}
#endif
if (vasprintf(&res, fmt, ap) < 0) {
/* Do not want to use xbt_die() here, as it uses the logging
- * infrastucture and may fail to allocate memory too. */
+ * infrastructure and may fail to allocate memory too. */
fprintf(stderr, "bprintf: vasprintf failed. Aborting.\n");
xbt_abort();
}
char *bprintf(const char *fmt, ...)
{
va_list ap;
- char *res;
va_start(ap, fmt);
- res = bvprintf(fmt, ap);
+ char *res = bvprintf(fmt, ap);
va_end(ap);
return res;
}
