| /* Like vsprintf but provides a pointer to malloc'd storage, which must |
| be freed by the caller. |
| Copyright (C) 1994-2019 Free Software Foundation, Inc. |
| |
| This file is part of the libiberty library. |
| Libiberty is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Library General Public |
| License as published by the Free Software Foundation; either |
| version 2 of the License, or (at your option) any later version. |
| |
| Libiberty 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 |
| Library General Public License for more details. |
| |
| You should have received a copy of the GNU Library General Public |
| License along with libiberty; see the file COPYING.LIB. If not, write |
| to the Free Software Foundation, Inc., 51 Franklin Street - Fifth |
| Floor, Boston, MA 02110-1301, USA. */ |
| |
| #ifdef HAVE_CONFIG_H |
| #include "config.h" |
| #endif |
| #include <ansidecl.h> |
| #include <stdarg.h> |
| #if !defined (va_copy) && defined (__va_copy) |
| # define va_copy(d,s) __va_copy((d),(s)) |
| #endif |
| #include <stdio.h> |
| #ifdef HAVE_STRING_H |
| #include <string.h> |
| #endif |
| #ifdef HAVE_STDLIB_H |
| #include <stdlib.h> |
| #else |
| extern PTR malloc (); |
| #endif |
| #include "libiberty.h" |
| #include "vprintf-support.h" |
| |
| #ifdef TEST |
| int global_total_width; |
| #endif |
| |
| /* |
| |
| @deftypefn Extension int vasprintf (char **@var{resptr}, @ |
| const char *@var{format}, va_list @var{args}) |
| |
| Like @code{vsprintf}, but instead of passing a pointer to a buffer, |
| you pass a pointer to a pointer. This function will compute the size |
| of the buffer needed, allocate memory with @code{malloc}, and store a |
| pointer to the allocated memory in @code{*@var{resptr}}. The value |
| returned is the same as @code{vsprintf} would return. If memory could |
| not be allocated, minus one is returned and @code{NULL} is stored in |
| @code{*@var{resptr}}. |
| |
| @end deftypefn |
| |
| */ |
| |
| static int int_vasprintf (char **, const char *, va_list); |
| |
| static int |
| int_vasprintf (char **result, const char *format, va_list args) |
| { |
| int total_width = libiberty_vprintf_buffer_size (format, args); |
| #ifdef TEST |
| global_total_width = total_width; |
| #endif |
| *result = (char *) malloc (total_width); |
| if (*result != NULL) |
| return vsprintf (*result, format, args); |
| else |
| return -1; |
| } |
| |
| int |
| vasprintf (char **result, const char *format, |
| #if defined (_BSD_VA_LIST_) && defined (__FreeBSD__) |
| _BSD_VA_LIST_ args) |
| #else |
| va_list args) |
| #endif |
| { |
| return int_vasprintf (result, format, args); |
| } |
| |
| #ifdef TEST |
| static void ATTRIBUTE_PRINTF_1 |
| checkit (const char *format, ...) |
| { |
| char *result; |
| va_list args; |
| va_start (args, format); |
| vasprintf (&result, format, args); |
| va_end (args); |
| |
| if (strlen (result) < (size_t) global_total_width) |
| printf ("PASS: "); |
| else |
| printf ("FAIL: "); |
| printf ("%d %s\n", global_total_width, result); |
| |
| free (result); |
| } |
| |
| extern int main (void); |
| |
| int |
| main (void) |
| { |
| checkit ("%d", 0x12345678); |
| checkit ("%200d", 5); |
| checkit ("%.300d", 6); |
| checkit ("%100.150d", 7); |
| checkit ("%s", "jjjjjjjjjiiiiiiiiiiiiiiioooooooooooooooooppppppppppppaa\n\ |
| 777777777777777777333333333333366666666666622222222222777777777777733333"); |
| checkit ("%f%s%d%s", 1.0, "foo", 77, "asdjffffffffffffffiiiiiiiiiiixxxxx"); |
| |
| return 0; |
| } |
| #endif /* TEST */ |