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Rev | Author | Line No. | Line |
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5191 | serge | 1 | /* Like vsprintf but provides a pointer to malloc'd storage, which must |
2 | be freed by the caller. |
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6324 | serge | 3 | Copyright (C) 1994, 2003, 2011, 2013 Free Software Foundation, Inc. |
5191 | serge | 4 | |
5 | This file is part of the libiberty library. |
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6 | Libiberty is free software; you can redistribute it and/or |
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7 | modify it under the terms of the GNU Library General Public |
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8 | License as published by the Free Software Foundation; either |
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9 | version 2 of the License, or (at your option) any later version. |
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10 | |||
11 | Libiberty is distributed in the hope that it will be useful, |
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12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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14 | Library General Public License for more details. |
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15 | |||
16 | You should have received a copy of the GNU Library General Public |
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6324 | serge | 17 | License along with libiberty; see the file COPYING.LIB. If not, write |
18 | to the Free Software Foundation, Inc., 51 Franklin Street - Fifth |
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19 | Floor, Boston, MA 02110-1301, USA. */ |
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5191 | serge | 20 | |
21 | #ifdef HAVE_CONFIG_H |
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22 | #include "config.h" |
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23 | #endif |
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24 | #include |
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25 | #include |
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26 | #if !defined (va_copy) && defined (__va_copy) |
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27 | # define va_copy(d,s) __va_copy((d),(s)) |
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28 | #endif |
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29 | #include |
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30 | #ifdef HAVE_STRING_H |
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31 | #include |
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32 | #endif |
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33 | #ifdef HAVE_STDLIB_H |
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34 | #include |
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35 | #else |
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36 | extern PTR malloc (); |
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37 | #endif |
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38 | #include "libiberty.h" |
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6324 | serge | 39 | #include "vprintf-support.h" |
5191 | serge | 40 | |
41 | #ifdef TEST |
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42 | int global_total_width; |
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43 | #endif |
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44 | |||
45 | /* |
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46 | |||
47 | @deftypefn Extension int vasprintf (char **@var{resptr}, @ |
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48 | const char *@var{format}, va_list @var{args}) |
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49 | |||
50 | Like @code{vsprintf}, but instead of passing a pointer to a buffer, |
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51 | you pass a pointer to a pointer. This function will compute the size |
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52 | of the buffer needed, allocate memory with @code{malloc}, and store a |
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53 | pointer to the allocated memory in @code{*@var{resptr}}. The value |
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54 | returned is the same as @code{vsprintf} would return. If memory could |
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55 | not be allocated, minus one is returned and @code{NULL} is stored in |
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56 | @code{*@var{resptr}}. |
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57 | |||
58 | @end deftypefn |
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59 | |||
60 | */ |
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61 | |||
62 | static int int_vasprintf (char **, const char *, va_list); |
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63 | |||
64 | static int |
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65 | int_vasprintf (char **result, const char *format, va_list args) |
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66 | { |
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6324 | serge | 67 | int total_width = libiberty_vprintf_buffer_size (format, args); |
5191 | serge | 68 | #ifdef TEST |
69 | global_total_width = total_width; |
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70 | #endif |
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71 | *result = (char *) malloc (total_width); |
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72 | if (*result != NULL) |
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73 | return vsprintf (*result, format, args); |
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74 | else |
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75 | return -1; |
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76 | } |
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77 | |||
78 | int |
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79 | vasprintf (char **result, const char *format, |
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80 | #if defined (_BSD_VA_LIST_) && defined (__FreeBSD__) |
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81 | _BSD_VA_LIST_ args) |
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82 | #else |
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83 | va_list args) |
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84 | #endif |
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85 | { |
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86 | return int_vasprintf (result, format, args); |
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87 | } |
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88 | |||
89 | #ifdef TEST |
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90 | static void ATTRIBUTE_PRINTF_1 |
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91 | checkit (const char *format, ...) |
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92 | { |
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93 | char *result; |
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6324 | serge | 94 | va_list args; |
95 | va_start (args, format); |
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5191 | serge | 96 | vasprintf (&result, format, args); |
6324 | serge | 97 | va_end (args); |
5191 | serge | 98 | |
99 | if (strlen (result) < (size_t) global_total_width) |
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100 | printf ("PASS: "); |
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101 | else |
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102 | printf ("FAIL: "); |
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103 | printf ("%d %s\n", global_total_width, result); |
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104 | |||
105 | free (result); |
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106 | } |
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107 | |||
108 | extern int main (void); |
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109 | |||
110 | int |
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111 | main (void) |
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112 | { |
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113 | checkit ("%d", 0x12345678); |
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114 | checkit ("%200d", 5); |
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115 | checkit ("%.300d", 6); |
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116 | checkit ("%100.150d", 7); |
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117 | checkit ("%s", "jjjjjjjjjiiiiiiiiiiiiiiioooooooooooooooooppppppppppppaa\n\ |
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118 | 777777777777777777333333333333366666666666622222222222777777777777733333"); |
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119 | checkit ("%f%s%d%s", 1.0, "foo", 77, "asdjffffffffffffffiiiiiiiiiiixxxxx"); |
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120 | |||
121 | return 0; |
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122 | } |
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123 | #endif /* TEST */> |