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6599da04 JM |
1 | /* Like vsprintf but provides a pointer to malloc'd storage, which must |
2 | be freed by the caller. | |
a945c346 | 3 | Copyright (C) 1994-2024 Free Software Foundation, Inc. |
6599da04 JM |
4 | |
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. | |
10 | ||
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. | |
15 | ||
16 | You should have received a copy of the GNU Library General Public | |
01ca36af UB |
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. */ | |
6599da04 | 20 | |
838f8562 KG |
21 | #ifdef HAVE_CONFIG_H |
22 | #include "config.h" | |
23 | #endif | |
24 | #include <ansidecl.h> | |
6599da04 | 25 | #include <stdarg.h> |
626ff3de AN |
26 | #if !defined (va_copy) && defined (__va_copy) |
27 | # define va_copy(d,s) __va_copy((d),(s)) | |
28 | #endif | |
96e88994 | 29 | #include <stdio.h> |
7a98d9b2 | 30 | #ifdef HAVE_STRING_H |
96e88994 | 31 | #include <string.h> |
7a98d9b2 | 32 | #endif |
838f8562 KG |
33 | #ifdef HAVE_STDLIB_H |
34 | #include <stdlib.h> | |
35 | #else | |
50b009c5 | 36 | extern void *malloc (); |
838f8562 KG |
37 | #endif |
38 | #include "libiberty.h" | |
01ca36af | 39 | #include "vprintf-support.h" |
6599da04 JM |
40 | |
41 | #ifdef TEST | |
42 | int global_total_width; | |
43 | #endif | |
44 | ||
aac04c15 DD |
45 | /* |
46 | ||
996c0cb0 RW |
47 | @deftypefn Extension int vasprintf (char **@var{resptr}, @ |
48 | const char *@var{format}, va_list @var{args}) | |
aac04c15 DD |
49 | |
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 | |
8d398258 | 55 | not be allocated, minus one is returned and @code{NULL} is stored in |
aac04c15 DD |
56 | @code{*@var{resptr}}. |
57 | ||
58 | @end deftypefn | |
59 | ||
60 | */ | |
838f8562 | 61 | |
7a17ef5e | 62 | static int int_vasprintf (char **, const char *, va_list); |
6599da04 JM |
63 | |
64 | static int | |
7a17ef5e | 65 | int_vasprintf (char **result, const char *format, va_list args) |
6599da04 | 66 | { |
01ca36af | 67 | int total_width = libiberty_vprintf_buffer_size (format, args); |
6599da04 JM |
68 | #ifdef TEST |
69 | global_total_width = total_width; | |
70 | #endif | |
f08b7eee | 71 | *result = (char *) malloc (total_width); |
6599da04 | 72 | if (*result != NULL) |
27eb8ab1 | 73 | return vsprintf (*result, format, args); |
6599da04 | 74 | else |
8d398258 | 75 | return -1; |
6599da04 JM |
76 | } |
77 | ||
78 | int | |
7a17ef5e | 79 | vasprintf (char **result, const char *format, |
19ddc834 | 80 | #if defined (_BSD_VA_LIST_) && defined (__FreeBSD__) |
7a17ef5e | 81 | _BSD_VA_LIST_ args) |
19ddc834 | 82 | #else |
7a17ef5e | 83 | va_list args) |
19ddc834 | 84 | #endif |
6599da04 | 85 | { |
27eb8ab1 | 86 | return int_vasprintf (result, format, args); |
6599da04 JM |
87 | } |
88 | ||
89 | #ifdef TEST | |
7a98d9b2 | 90 | static void ATTRIBUTE_PRINTF_1 |
7a17ef5e | 91 | checkit (const char *format, ...) |
6599da04 | 92 | { |
6599da04 | 93 | char *result; |
d2d21de9 TT |
94 | va_list args; |
95 | va_start (args, format); | |
6599da04 | 96 | vasprintf (&result, format, args); |
d2d21de9 | 97 | va_end (args); |
7a98d9b2 | 98 | |
838f8562 | 99 | if (strlen (result) < (size_t) global_total_width) |
6599da04 JM |
100 | printf ("PASS: "); |
101 | else | |
102 | printf ("FAIL: "); | |
103 | printf ("%d %s\n", global_total_width, result); | |
7a98d9b2 KG |
104 | |
105 | free (result); | |
6599da04 JM |
106 | } |
107 | ||
7a17ef5e | 108 | extern int main (void); |
838f8562 | 109 | |
6599da04 | 110 | int |
7a17ef5e | 111 | main (void) |
6599da04 JM |
112 | { |
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"); | |
838f8562 KG |
120 | |
121 | return 0; | |
6599da04 JM |
122 | } |
123 | #endif /* TEST */ |