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726f6388 JA |
1 | /* input.h -- Structures and unions used for reading input. */ |
2 | /* Copyright (C) 1993 Free Software Foundation, Inc. | |
3 | ||
4 | This file is part of GNU Bash, the Bourne Again SHell. | |
5 | ||
6 | Bash is free software; you can redistribute it and/or modify it under | |
7 | the terms of the GNU General Public License as published by the Free | |
8 | Software Foundation; either version 2, or (at your option) any later | |
9 | version. | |
10 | ||
11 | Bash is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 | for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License along | |
17 | with Bash; see the file COPYING. If not, write to the Free Software | |
bb70624e | 18 | Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
726f6388 | 19 | |
ccc6cda3 JA |
20 | #if !defined (_INPUT_H_) |
21 | #define _INPUT_H_ | |
726f6388 JA |
22 | |
23 | #include "stdc.h" | |
24 | ||
25 | /* Function pointers can be declared as (Function *)foo. */ | |
ccc6cda3 JA |
26 | #if !defined (_FUNCTION_DEF) |
27 | # define _FUNCTION_DEF | |
726f6388 JA |
28 | typedef int Function (); |
29 | typedef void VFunction (); | |
30 | typedef char *CPFunction (); | |
31 | typedef char **CPPFunction (); | |
32 | #endif /* _FUNCTION_DEF */ | |
33 | ||
ccc6cda3 | 34 | enum stream_type {st_none, st_stdin, st_stream, st_string, st_bstream}; |
726f6388 JA |
35 | |
36 | #if defined (BUFFERED_INPUT) | |
726f6388 JA |
37 | |
38 | /* Possible values for b_flag. */ | |
cce855bc JA |
39 | #undef B_EOF |
40 | #undef B_ERROR /* There are some systems with this define */ | |
41 | #undef B_UNBUFF | |
42 | ||
28ef6c31 JA |
43 | #define B_EOF 0x01 |
44 | #define B_ERROR 0x02 | |
45 | #define B_UNBUFF 0x04 | |
46 | #define B_WASBASHINPUT 0x08 | |
726f6388 JA |
47 | |
48 | /* A buffered stream. Like a FILE *, but with our own buffering and | |
49 | synchronization. Look in input.c for the implementation. */ | |
50 | typedef struct BSTREAM | |
51 | { | |
52 | int b_fd; | |
53 | char *b_buffer; /* The buffer that holds characters read. */ | |
cce855bc | 54 | size_t b_size; /* How big the buffer is. */ |
726f6388 JA |
55 | int b_used; /* How much of the buffer we're using, */ |
56 | int b_flag; /* Flag values. */ | |
57 | int b_inputp; /* The input pointer, index into b_buffer. */ | |
58 | } BUFFERED_STREAM; | |
59 | ||
cce855bc | 60 | #if 0 |
726f6388 | 61 | extern BUFFERED_STREAM **buffers; |
cce855bc | 62 | #endif |
726f6388 JA |
63 | |
64 | extern int default_buffered_input; | |
65 | ||
66 | #endif /* BUFFERED_INPUT */ | |
67 | ||
68 | typedef union { | |
69 | FILE *file; | |
70 | char *string; | |
71 | #if defined (BUFFERED_INPUT) | |
72 | int buffered_fd; | |
73 | #endif | |
74 | } INPUT_STREAM; | |
75 | ||
76 | typedef struct { | |
ccc6cda3 | 77 | enum stream_type type; |
726f6388 JA |
78 | char *name; |
79 | INPUT_STREAM location; | |
80 | Function *getter; | |
81 | Function *ungetter; | |
82 | } BASH_INPUT; | |
83 | ||
84 | extern BASH_INPUT bash_input; | |
85 | ||
86 | /* Functions from parse.y. */ | |
87 | extern void initialize_bash_input __P((void)); | |
d166f048 | 88 | extern void init_yy_io __P((Function *, Function *, enum stream_type, char *, INPUT_STREAM)); |
726f6388 JA |
89 | extern void with_input_from_stdin __P((void)); |
90 | extern void with_input_from_string __P((char *, char *)); | |
91 | extern void with_input_from_stream __P((FILE *, char *)); | |
ccc6cda3 JA |
92 | extern void push_stream __P((int)); |
93 | extern void pop_stream __P((void)); | |
94 | extern int stream_on_stack __P((enum stream_type)); | |
726f6388 JA |
95 | extern char *read_secondary_line __P((int)); |
96 | extern int find_reserved_word __P((char *)); | |
97 | extern char *decode_prompt_string __P((char *)); | |
98 | extern void gather_here_documents __P((void)); | |
99 | extern void execute_prompt_command __P((char *)); | |
100 | ||
bb70624e JA |
101 | extern int *save_token_state __P((void)); |
102 | extern void restore_token_state __P((int *)); | |
103 | ||
ccc6cda3 JA |
104 | /* Functions from input.c */ |
105 | extern int getc_with_restart (); | |
106 | extern int ungetc_with_restart (); | |
107 | ||
726f6388 JA |
108 | #if defined (BUFFERED_INPUT) |
109 | /* Functions from input.c. */ | |
28ef6c31 JA |
110 | extern int fd_is_bash_input __P((int)); |
111 | extern int set_bash_input_fd __P((int)); | |
112 | extern int save_bash_input __P((int, int)); | |
726f6388 JA |
113 | extern int check_bash_input __P((int)); |
114 | extern int duplicate_buffered_stream __P((int, int)); | |
115 | extern BUFFERED_STREAM *fd_to_buffered_stream __P((int)); | |
cce855bc | 116 | extern BUFFERED_STREAM *set_buffered_stream __P((int, BUFFERED_STREAM *)); |
726f6388 JA |
117 | extern BUFFERED_STREAM *open_buffered_stream __P((char *)); |
118 | extern void free_buffered_stream __P((BUFFERED_STREAM *)); | |
119 | extern int close_buffered_stream __P((BUFFERED_STREAM *)); | |
120 | extern int close_buffered_fd __P((int)); | |
121 | extern int sync_buffered_stream __P((int)); | |
122 | extern int buffered_getchar __P((void)); | |
123 | extern int buffered_ungetchar __P((int)); | |
124 | extern void with_input_from_buffered_stream __P((int, char *)); | |
125 | #endif /* BUFFERED_INPUT */ | |
126 | ||
ccc6cda3 | 127 | #endif /* _INPUT_H_ */ |