1 /* Like vsprintf but provides a pointer to malloc'd storage, which must
2 be freed by the caller.
3 Copyright (C) 1994 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
18 not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
25 #ifdef ANSI_PROTOTYPES
37 extern unsigned long strtoul ();
40 #include "libiberty.h"
43 int global_total_width;
47 static int int_vasprintf PARAMS ((char **, const char *, va_list *));
50 int_vasprintf (result, format, args)
55 const char *p = format;
56 /* Add one to make sure that it is never zero, which might cause malloc
58 int total_width = strlen (format) + 1;
61 memcpy ((PTR) &ap, (PTR) args, sizeof (va_list));
67 while (strchr ("-+ #0", *p))
72 total_width += abs (va_arg (ap, int));
75 total_width += strtoul (p, (char **) &p, 10);
82 total_width += abs (va_arg (ap, int));
85 total_width += strtoul (p, (char **) &p, 10);
87 while (strchr ("hlL", *p))
89 /* Should be big enough for any format specifier except %s and floats. */
100 (void) va_arg (ap, int);
107 (void) va_arg (ap, double);
108 /* Since an ieee double can have an exponent of 307, we'll
109 make the buffer wide enough to cover the gross case. */
113 total_width += strlen (va_arg (ap, char *));
117 (void) va_arg (ap, char *);
124 global_total_width = total_width;
126 *result = malloc (total_width);
128 return vsprintf (*result, format, *args);
134 vasprintf (result, format, args)
137 #if defined (_BSD_VA_LIST_) && defined (__FreeBSD__)
143 return int_vasprintf (result, format, &args);
147 static void ATTRIBUTE_PRINTF_1
148 checkit VPARAMS ((const char *format, ...))
151 VA_OPEN (args, format);
152 VA_FIXEDARG (args, const char *, format);
153 vasprintf (&result, format, args);
156 if (strlen (result) < (size_t) global_total_width)
160 printf ("%d %s\n", global_total_width, result);
165 extern int main PARAMS ((void));
170 checkit ("%d", 0x12345678);
171 checkit ("%200d", 5);
172 checkit ("%.300d", 6);
173 checkit ("%100.150d", 7);
174 checkit ("%s", "jjjjjjjjjiiiiiiiiiiiiiiioooooooooooooooooppppppppppppaa\n\
175 777777777777777777333333333333366666666666622222222222777777777777733333");
176 checkit ("%f%s%d%s", 1.0, "foo", 77, "asdjffffffffffffffiiiiiiiiiiixxxxx");