1 /* Like vsprintf but provides a pointer to malloc'd storage, which must
2 be freed by the caller.
3 Copyright (C) 1994, 2002 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. */
30 #ifndef va_copy /* According to POSIX, va_copy is a macro. */
31 #if defined (__GNUC__) && defined (__PPC__) \
32 && (defined (_CALL_SYSV) || defined (_WIN32))
33 #define va_copy(d, s) (*(d) = *(s))
34 #elif defined (MUST_COPY_VA_BYVAL)
35 #define va_copy(d, s) ((d) = (s))
37 #define va_copy(d, s) memcpy ((d), (s), sizeof (va_list))
43 int global_total_width;
46 static int int_vasprintf (char **, const char *, va_list *);
49 int_vasprintf (result, format, args)
54 #ifdef HAVE_W32CE_SYSTEM
55 /* No va_copy and the replacement above doesn't work. */
56 #define MAX_STRLEN 256
57 *result = malloc (MAX_STRLEN);
60 int res = _vsnprintf (*result, MAX_STRLEN, format, *args);
61 (*result)[MAX_STRLEN - 1] = '\0';
67 const char *p = format;
68 /* Add one to make sure that it is never zero, which might cause malloc
70 int total_width = strlen (format) + 1;
79 while (strchr ("-+ #0", *p))
84 total_width += abs (va_arg (ap, int));
87 total_width += strtoul (p, (char **) &p, 10);
94 total_width += abs (va_arg (ap, int));
97 total_width += strtoul (p, (char **) &p, 10);
99 while (strchr ("hlL", *p))
101 /* Should be big enough for any format specifier except %s and floats. */
112 (void) va_arg (ap, int);
119 (void) va_arg (ap, double);
120 /* Since an ieee double can have an exponent of 307, we'll
121 make the buffer wide enough to cover the gross case. */
126 char *tmp = va_arg (ap, char *);
128 total_width += strlen (tmp);
129 else /* in case the vsprintf does prints a text */
130 total_width += 25; /* e.g. "(null pointer reference)" */
135 (void) va_arg (ap, char *);
142 global_total_width = total_width;
144 *result = malloc (total_width);
146 return vsprintf (*result, format, *args);
153 vasprintf (result, format, args)
156 #if defined (_BSD_VA_LIST_) && defined (__FreeBSD__)
162 return int_vasprintf (result, format, &args);
167 asprintf (char **buf, const char *fmt, ...)
173 status = vasprintf (buf, fmt, ap);
181 checkit (const char* format, ...)
186 va_start (args, format);
187 vasprintf (&result, format, args);
188 if (strlen (result) < global_total_width)
192 printf ("%d %s\n", global_total_width, result);
198 checkit ("%d", 0x12345678);
199 checkit ("%200d", 5);
200 checkit ("%.300d", 6);
201 checkit ("%100.150d", 7);
202 checkit ("%s", "jjjjjjjjjiiiiiiiiiiiiiiioooooooooooooooooppppppppppppaa\n\
203 777777777777777777333333333333366666666666622222222222777777777777733333");
204 checkit ("%f%s%d%s", 1.0, "foo", 77, "asdjffffffffffffffiiiiiiiiiiixxxxx");