1 /* Like vsprintf but provides a pointer to malloc'd storage, which must
2 be freed by the caller.
3 Copyright (C) 1994-2018 Free Software Foundation, Inc.
5 This file is part of the libiberty library.
6 Libiberty is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Library General Public
8 License as published by the Free Software Foundation; either
9 version 2 of the License, or (at your option) any later version.
11 Libiberty is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Library General Public License for more details.
16 You should have received a copy of the GNU Library General Public
17 License along with libiberty; see the file COPYING.LIB. If not, write
18 to the Free Software Foundation, Inc., 51 Franklin Street - Fifth
19 Floor, Boston, MA 02110-1301, USA. */
26 #if !defined (va_copy) && defined (__va_copy)
27 # define va_copy(d,s) __va_copy((d),(s))
38 #include "libiberty.h"
39 #include "vprintf-support.h"
42 int global_total_width
;
47 @deftypefn Extension int vasprintf (char **@var{resptr}, @
48 const char *@var{format}, va_list @var{args})
50 Like @code{vsprintf}, but instead of passing a pointer to a buffer,
51 you pass a pointer to a pointer. This function will compute the size
52 of the buffer needed, allocate memory with @code{malloc}, and store a
53 pointer to the allocated memory in @code{*@var{resptr}}. The value
54 returned is the same as @code{vsprintf} would return. If memory could
55 not be allocated, minus one is returned and @code{NULL} is stored in
62 static int int_vasprintf (char **, const char *, va_list);
65 int_vasprintf (char **result
, const char *format
, va_list args
)
67 int total_width
= libiberty_vprintf_buffer_size (format
, args
);
69 global_total_width
= total_width
;
71 *result
= (char *) malloc (total_width
);
73 return vsprintf (*result
, format
, args
);
79 vasprintf (char **result
, const char *format
,
80 #if defined (_BSD_VA_LIST_) && defined (__FreeBSD__)
86 return int_vasprintf (result
, format
, args
);
90 static void ATTRIBUTE_PRINTF_1
91 checkit (const char *format
, ...)
95 va_start (args
, format
);
96 vasprintf (&result
, format
, args
);
99 if (strlen (result
) < (size_t) global_total_width
)
103 printf ("%d %s\n", global_total_width
, result
);
108 extern int main (void);
113 checkit ("%d", 0x12345678);
114 checkit ("%200d", 5);
115 checkit ("%.300d", 6);
116 checkit ("%100.150d", 7);
117 checkit ("%s", "jjjjjjjjjiiiiiiiiiiiiiiioooooooooooooooooppppppppppppaa\n\
118 777777777777777777333333333333366666666666622222222222777777777777733333");
119 checkit ("%f%s%d%s", 1.0, "foo", 77, "asdjffffffffffffffiiiiiiiiiiixxxxx");
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