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, 675 Mass Ave, Cambridge, MA 02139, 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. */
43 /* A buffered stream. Like a FILE *, but with our own buffering and
44 synchronization. Look in input.c for the implementation. */
45 typedef struct BSTREAM
48 char *b_buffer; /* The buffer that holds characters read. */
49 int b_size; /* How big the buffer is. */
50 int b_used; /* How much of the buffer we're using, */
51 int b_flag; /* Flag values. */
52 int b_inputp; /* The input pointer, index into b_buffer. */
55 extern BUFFERED_STREAM **buffers;
57 extern BUFFERED_STREAM *fd_to_buffered_stream ();
59 extern int default_buffered_input;
61 #endif /* BUFFERED_INPUT */
66 #if defined (BUFFERED_INPUT)
72 enum stream_type type;
74 INPUT_STREAM location;
79 extern BASH_INPUT bash_input;
81 /* Functions from parse.y. */
82 extern void initialize_bash_input __P((void));
83 extern void init_yy_io __P((Function *, Function *, int, char *, INPUT_STREAM));
84 extern void with_input_from_stdin __P((void));
85 extern void with_input_from_string __P((char *, char *));
86 extern void with_input_from_stream __P((FILE *, char *));
87 extern void push_stream __P((int));
88 extern void pop_stream __P((void));
89 extern int stream_on_stack __P((enum stream_type));
90 extern char *read_secondary_line __P((int));
91 extern int find_reserved_word __P((char *));
92 extern char *decode_prompt_string __P((char *));
93 extern void gather_here_documents __P((void));
94 extern void execute_prompt_command __P((char *));
96 /* Functions from input.c */
97 extern int getc_with_restart ();
98 extern int ungetc_with_restart ();
100 #if defined (BUFFERED_INPUT)
101 /* Functions from input.c. */
102 extern int check_bash_input __P((int));
103 extern int duplicate_buffered_stream __P((int, int));
104 extern BUFFERED_STREAM *fd_to_buffered_stream __P((int));
105 extern BUFFERED_STREAM *open_buffered_stream __P((char *));
106 extern void free_buffered_stream __P((BUFFERED_STREAM *));
107 extern int close_buffered_stream __P((BUFFERED_STREAM *));
108 extern int close_buffered_fd __P((int));
109 extern int sync_buffered_stream __P((int));
110 extern int buffered_getchar __P((void));
111 extern int buffered_ungetchar __P((int));
112 extern void with_input_from_buffered_stream __P((int, char *));
113 #endif /* BUFFERED_INPUT */
115 #endif /* _INPUT_H_ */