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04277e02 | 1 | /* Copyright (C) 1993-2019 Free Software Foundation, Inc. |
41bdb6e2 | 2 | This file is part of the GNU C Library. |
40a55d20 | 3 | |
41bdb6e2 AJ |
4 | The GNU C Library is free software; you can redistribute it and/or |
5 | modify it under the terms of the GNU Lesser General Public | |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
40a55d20 | 8 | |
41bdb6e2 AJ |
9 | The GNU C Library is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
40a55d20 | 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
41bdb6e2 | 12 | Lesser General Public License for more details. |
40a55d20 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. | |
40a55d20 | 17 | |
41bdb6e2 AJ |
18 | As a special exception, if you link the code in this file with |
19 | files compiled with a GNU compiler to produce an executable, | |
20 | that does not cause the resulting executable to be covered by | |
21 | the GNU Lesser General Public License. This exception does not | |
22 | however invalidate any other reasons why the executable file | |
23 | might be covered by the GNU Lesser General Public License. | |
24 | This exception applies to code released by its copyright holders | |
25 | in files containing the exception. */ | |
96aa2d94 | 26 | |
349718d4 ZW |
27 | #ifndef STRFILE_H_ |
28 | #define STRFILE_H_ | |
29 | ||
9964a145 | 30 | #include "libioP.h" |
96aa2d94 | 31 | |
9964a145 | 32 | typedef void *(*_IO_alloc_type) (size_t); |
d8cf93f4 | 33 | typedef void (*_IO_free_type) (void*); |
96aa2d94 RM |
34 | |
35 | struct _IO_str_fields | |
36 | { | |
4e8a6346 FW |
37 | /* These members are preserved for ABI compatibility. The glibc |
38 | implementation always calls malloc/free for user buffers if | |
39 | _IO_USER_BUF or _IO_FLAGS2_USER_WBUF are not set. */ | |
40 | _IO_alloc_type _allocate_buffer_unused; | |
41 | _IO_free_type _free_buffer_unused; | |
96aa2d94 RM |
42 | }; |
43 | ||
f65fd747 UD |
44 | /* This is needed for the Irix6 N32 ABI, which has a 64 bit off_t type, |
45 | but a 32 bit pointer type. In this case, we get 4 bytes of padding | |
46 | after the vtable pointer. Putting them in a structure together solves | |
47 | this problem. */ | |
48 | ||
49 | struct _IO_streambuf | |
96aa2d94 | 50 | { |
9964a145 | 51 | FILE _f; |
f521be31 | 52 | const struct _IO_jump_t *vtable; |
f65fd747 UD |
53 | }; |
54 | ||
55 | typedef struct _IO_strfile_ | |
56 | { | |
57 | struct _IO_streambuf _sbf; | |
96aa2d94 RM |
58 | struct _IO_str_fields _s; |
59 | } _IO_strfile; | |
f65fd747 | 60 | |
f65fd747 UD |
61 | /* frozen: set when the program has requested that the array object not |
62 | be altered, reallocated, or freed. */ | |
df6c012b | 63 | #define _IO_STR_FROZEN(FP) ((FP)->_f._flags & _IO_USER_BUF) |
b5cc329c UD |
64 | |
65 | typedef struct | |
66 | { | |
67 | _IO_strfile f; | |
68 | /* This is used for the characters which do not fit in the buffer | |
69 | provided by the user. */ | |
70 | char overflow_buf[64]; | |
71 | } _IO_strnfile; | |
72 | ||
73 | extern const struct _IO_jump_t _IO_strn_jumps attribute_hidden; | |
8215c9ec UD |
74 | |
75 | ||
76 | typedef struct | |
77 | { | |
78 | _IO_strfile f; | |
79 | /* This is used for the characters which do not fit in the buffer | |
80 | provided by the user. */ | |
81 | wchar_t overflow_buf[64]; | |
82 | } _IO_wstrnfile; | |
83 | ||
84 | extern const struct _IO_jump_t _IO_wstrn_jumps attribute_hidden; | |
349718d4 ZW |
85 | |
86 | /* Initialize an _IO_strfile SF to read from narrow string STRING, and | |
87 | return the corresponding FILE object. It is not necessary to fclose | |
88 | the FILE when it is no longer needed. */ | |
89 | static inline FILE * | |
90 | _IO_strfile_read (_IO_strfile *sf, const char *string) | |
91 | { | |
92 | sf->_sbf._f._lock = NULL; | |
93 | _IO_no_init (&sf->_sbf._f, _IO_USER_LOCK, -1, NULL, NULL); | |
94 | _IO_JUMPS (&sf->_sbf) = &_IO_str_jumps; | |
95 | _IO_str_init_static_internal (sf, (char*)string, 0, NULL); | |
96 | return &sf->_sbf._f; | |
97 | } | |
98 | ||
99 | /* Initialize an _IO_strfile SF and _IO_wide_data WD to read from wide | |
100 | string STRING, and return the corresponding FILE object. It is not | |
101 | necessary to fclose the FILE when it is no longer needed. */ | |
102 | static inline FILE * | |
103 | _IO_strfile_readw (_IO_strfile *sf, struct _IO_wide_data *wd, | |
104 | const wchar_t *string) | |
105 | { | |
106 | sf->_sbf._f._lock = NULL; | |
107 | _IO_no_init (&sf->_sbf._f, _IO_USER_LOCK, 0, wd, &_IO_wstr_jumps); | |
108 | _IO_fwide (&sf->_sbf._f, 1); | |
109 | _IO_wstr_init_static (&sf->_sbf._f, (wchar_t *)string, 0, NULL); | |
110 | return &sf->_sbf._f; | |
111 | } | |
112 | ||
113 | #endif /* strfile.h. */ |