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
35 extern unsigned long strtoul ();
38 #include "libiberty.h"
41 int global_total_width;
45 static int int_vasprintf PARAMS ((char **, const char *, va_list *));
48 int_vasprintf (result, format, args)
53 const char *p = format;
54 /* Add one to make sure that it is never zero, which might cause malloc
56 int total_width = strlen (format) + 1;
59 memcpy ((PTR) &ap, (PTR) args, sizeof (va_list));
65 while (strchr ("-+ #0", *p))
70 total_width += abs (va_arg (ap, int));
73 total_width += strtoul (p, (char **) &p, 10);
80 total_width += abs (va_arg (ap, int));
83 total_width += strtoul (p, (char **) &p, 10);
85 while (strchr ("hlL", *p))
87 /* Should be big enough for any format specifier except %s and floats. */
98 (void) va_arg (ap, int);
105 (void) va_arg (ap, double);
106 /* Since an ieee double can have an exponent of 307, we'll
107 make the buffer wide enough to cover the gross case. */
111 total_width += strlen (va_arg (ap, char *));
115 (void) va_arg (ap, char *);
122 global_total_width = total_width;
124 *result = malloc (total_width);
126 return vsprintf (*result, format, *args);
132 vasprintf (result, format, args)
135 #if defined (_BSD_VA_LIST_) && defined (__FreeBSD__)
141 return int_vasprintf (result, format, &args);
145 static void checkit PARAMS ((const char *, ...));
148 checkit VPARAMS ((const char* format, ...))
152 #ifndef ANSI_PROTOTYPES
156 VA_START (args, format);
158 #ifndef ANSI_PROTOTYPES
159 format = va_arg (args, const char *);
162 vasprintf (&result, format, args);
163 if (strlen (result) < (size_t) global_total_width)
167 printf ("%d %s\n", global_total_width, result);
170 extern int main PARAMS ((void));
175 checkit ("%d", 0x12345678);
176 checkit ("%200d", 5);
177 checkit ("%.300d", 6);
178 checkit ("%100.150d", 7);
179 checkit ("%s", "jjjjjjjjjiiiiiiiiiiiiiiioooooooooooooooooppppppppppppaa\n\
180 777777777777777777333333333333366666666666622222222222777777777777733333");
181 checkit ("%f%s%d%s", 1.0, "foo", 77, "asdjffffffffffffffiiiiiiiiiiixxxxx");