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726f6388 | 1 | /* input.h -- Structures and unions used for reading input. */ |
3185942a JA |
2 | |
3 | /* Copyright (C) 1993-2009 Free Software Foundation, Inc. | |
726f6388 JA |
4 | |
5 | This file is part of GNU Bash, the Bourne Again SHell. | |
6 | ||
3185942a JA |
7 | Bash is free software: you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation, either version 3 of the License, or | |
10 | (at your option) any later version. | |
726f6388 | 11 | |
3185942a JA |
12 | Bash is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
726f6388 | 16 | |
3185942a JA |
17 | You should have received a copy of the GNU General Public License |
18 | along with Bash. If not, see <http://www.gnu.org/licenses/>. | |
19 | */ | |
726f6388 | 20 | |
ccc6cda3 JA |
21 | #if !defined (_INPUT_H_) |
22 | #define _INPUT_H_ | |
726f6388 JA |
23 | |
24 | #include "stdc.h" | |
25 | ||
26 | /* Function pointers can be declared as (Function *)foo. */ | |
ccc6cda3 JA |
27 | #if !defined (_FUNCTION_DEF) |
28 | # define _FUNCTION_DEF | |
726f6388 JA |
29 | typedef int Function (); |
30 | typedef void VFunction (); | |
f73dda09 JA |
31 | typedef char *CPFunction (); /* no longer used */ |
32 | typedef char **CPPFunction (); /* no longer used */ | |
726f6388 JA |
33 | #endif /* _FUNCTION_DEF */ |
34 | ||
f73dda09 JA |
35 | typedef int sh_cget_func_t __P((void)); /* sh_ivoidfunc_t */ |
36 | typedef int sh_cunget_func_t __P((int)); /* sh_intfunc_t */ | |
37 | ||
ccc6cda3 | 38 | enum stream_type {st_none, st_stdin, st_stream, st_string, st_bstream}; |
726f6388 JA |
39 | |
40 | #if defined (BUFFERED_INPUT) | |
726f6388 JA |
41 | |
42 | /* Possible values for b_flag. */ | |
cce855bc JA |
43 | #undef B_EOF |
44 | #undef B_ERROR /* There are some systems with this define */ | |
45 | #undef B_UNBUFF | |
46 | ||
28ef6c31 JA |
47 | #define B_EOF 0x01 |
48 | #define B_ERROR 0x02 | |
49 | #define B_UNBUFF 0x04 | |
50 | #define B_WASBASHINPUT 0x08 | |
495aee44 | 51 | #define B_TEXT 0x10 |
726f6388 JA |
52 | |
53 | /* A buffered stream. Like a FILE *, but with our own buffering and | |
54 | synchronization. Look in input.c for the implementation. */ | |
55 | typedef struct BSTREAM | |
56 | { | |
f73dda09 | 57 | int b_fd; |
726f6388 | 58 | char *b_buffer; /* The buffer that holds characters read. */ |
cce855bc | 59 | size_t b_size; /* How big the buffer is. */ |
f73dda09 JA |
60 | size_t b_used; /* How much of the buffer we're using, */ |
61 | int b_flag; /* Flag values. */ | |
62 | size_t b_inputp; /* The input pointer, index into b_buffer. */ | |
726f6388 JA |
63 | } BUFFERED_STREAM; |
64 | ||
cce855bc | 65 | #if 0 |
726f6388 | 66 | extern BUFFERED_STREAM **buffers; |
cce855bc | 67 | #endif |
726f6388 JA |
68 | |
69 | extern int default_buffered_input; | |
70 | ||
71 | #endif /* BUFFERED_INPUT */ | |
72 | ||
73 | typedef union { | |
74 | FILE *file; | |
75 | char *string; | |
76 | #if defined (BUFFERED_INPUT) | |
77 | int buffered_fd; | |
78 | #endif | |
79 | } INPUT_STREAM; | |
80 | ||
81 | typedef struct { | |
ccc6cda3 | 82 | enum stream_type type; |
726f6388 JA |
83 | char *name; |
84 | INPUT_STREAM location; | |
f73dda09 JA |
85 | sh_cget_func_t *getter; |
86 | sh_cunget_func_t *ungetter; | |
726f6388 JA |
87 | } BASH_INPUT; |
88 | ||
89 | extern BASH_INPUT bash_input; | |
90 | ||
7117c2d2 JA |
91 | /* Functions from parse.y whose use directly or indirectly depends on the |
92 | definitions in this file. */ | |
726f6388 | 93 | extern void initialize_bash_input __P((void)); |
f73dda09 | 94 | extern void init_yy_io __P((sh_cget_func_t *, sh_cunget_func_t *, enum stream_type, const char *, INPUT_STREAM)); |
7117c2d2 | 95 | extern char *yy_input_name __P((void)); |
726f6388 | 96 | extern void with_input_from_stdin __P((void)); |
f73dda09 JA |
97 | extern void with_input_from_string __P((char *, const char *)); |
98 | extern void with_input_from_stream __P((FILE *, const char *)); | |
ccc6cda3 JA |
99 | extern void push_stream __P((int)); |
100 | extern void pop_stream __P((void)); | |
101 | extern int stream_on_stack __P((enum stream_type)); | |
726f6388 JA |
102 | extern char *read_secondary_line __P((int)); |
103 | extern int find_reserved_word __P((char *)); | |
726f6388 | 104 | extern void gather_here_documents __P((void)); |
0628567a | 105 | extern void execute_variable_command __P((char *, char *)); |
726f6388 | 106 | |
bb70624e JA |
107 | extern int *save_token_state __P((void)); |
108 | extern void restore_token_state __P((int *)); | |
109 | ||
ccc6cda3 | 110 | /* Functions from input.c */ |
f73dda09 JA |
111 | extern int getc_with_restart __P((FILE *)); |
112 | extern int ungetc_with_restart __P((int, FILE *)); | |
ccc6cda3 | 113 | |
726f6388 JA |
114 | #if defined (BUFFERED_INPUT) |
115 | /* Functions from input.c. */ | |
28ef6c31 JA |
116 | extern int fd_is_bash_input __P((int)); |
117 | extern int set_bash_input_fd __P((int)); | |
118 | extern int save_bash_input __P((int, int)); | |
726f6388 JA |
119 | extern int check_bash_input __P((int)); |
120 | extern int duplicate_buffered_stream __P((int, int)); | |
121 | extern BUFFERED_STREAM *fd_to_buffered_stream __P((int)); | |
cce855bc | 122 | extern BUFFERED_STREAM *set_buffered_stream __P((int, BUFFERED_STREAM *)); |
726f6388 JA |
123 | extern BUFFERED_STREAM *open_buffered_stream __P((char *)); |
124 | extern void free_buffered_stream __P((BUFFERED_STREAM *)); | |
125 | extern int close_buffered_stream __P((BUFFERED_STREAM *)); | |
126 | extern int close_buffered_fd __P((int)); | |
127 | extern int sync_buffered_stream __P((int)); | |
128 | extern int buffered_getchar __P((void)); | |
129 | extern int buffered_ungetchar __P((int)); | |
130 | extern void with_input_from_buffered_stream __P((int, char *)); | |
131 | #endif /* BUFFERED_INPUT */ | |
132 | ||
ccc6cda3 | 133 | #endif /* _INPUT_H_ */ |