1 /* input.h -- Structures and unions used for reading input. */
2 /* Copyright (C) 1993 Free Software Foundation, Inc.
4 This file is part of GNU Bash, the Bourne Again SHell.
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
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
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
18 Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
20 #if !defined (_INPUT_H_)
25 /* Function pointers can be declared as (Function *)foo. */
26 #if !defined (_FUNCTION_DEF)
27 # define _FUNCTION_DEF
28 typedef int Function ();
29 typedef void VFunction ();
30 typedef char *CPFunction ();
31 typedef char **CPPFunction ();
32 #endif /* _FUNCTION_DEF */
34 enum stream_type
{st_none
, st_stdin
, st_stream
, st_string
, st_bstream
};
36 #if defined (BUFFERED_INPUT)
38 /* Possible values for b_flag. */
40 #undef B_ERROR /* There are some systems with this define */
46 #define B_WASBASHINPUT 0x08
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
53 char *b_buffer
; /* The buffer that holds characters read. */
54 size_t b_size
; /* How big the buffer is. */
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. */
61 extern BUFFERED_STREAM
**buffers
;
64 extern int default_buffered_input
;
66 #endif /* BUFFERED_INPUT */
71 #if defined (BUFFERED_INPUT)
77 enum stream_type type
;
79 INPUT_STREAM location
;
84 extern BASH_INPUT bash_input
;
86 /* Functions from parse.y. */
87 extern void initialize_bash_input
__P((void));
88 extern void init_yy_io
__P((Function
*, Function
*, enum stream_type
, char *, INPUT_STREAM
));
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 *));
92 extern void push_stream
__P((int));
93 extern void pop_stream
__P((void));
94 extern int stream_on_stack
__P((enum stream_type
));
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 *));
101 extern int *save_token_state
__P((void));
102 extern void restore_token_state
__P((int *));
104 /* Functions from input.c */
105 extern int getc_with_restart ();
106 extern int ungetc_with_restart ();
108 #if defined (BUFFERED_INPUT)
109 /* Functions from input.c. */
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));
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));
116 extern BUFFERED_STREAM
*set_buffered_stream
__P((int, BUFFERED_STREAM
*));
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 */
127 #endif /* _INPUT_H_ */