1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
/* input.h -- Structures and unions used for reading input. */
/* Copyright (C) 1993 Free Software Foundation, Inc.
This file is part of GNU Bash, the Bourne Again SHell.
Bash is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.
Bash is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License along
with Bash; see the file COPYING. If not, write to the Free Software
Foundation, 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
#if !defined (_INPUT_H_)
#define _INPUT_H_
#include "stdc.h"
/* Function pointers can be declared as (Function *)foo. */
#if !defined (_FUNCTION_DEF)
# define _FUNCTION_DEF
typedef int Function ();
typedef void VFunction ();
typedef char *CPFunction (); /* no longer used */
typedef char **CPPFunction (); /* no longer used */
#endif /* _FUNCTION_DEF */
typedef int sh_cget_func_t __P((void)); /* sh_ivoidfunc_t */
typedef int sh_cunget_func_t __P((int)); /* sh_intfunc_t */
enum stream_type {st_none, st_stdin, st_stream, st_string, st_bstream};
#if defined (BUFFERED_INPUT)
/* Possible values for b_flag. */
#undef B_EOF
#undef B_ERROR /* There are some systems with this define */
#undef B_UNBUFF
#define B_EOF 0x01
#define B_ERROR 0x02
#define B_UNBUFF 0x04
#define B_WASBASHINPUT 0x08
/* A buffered stream. Like a FILE *, but with our own buffering and
synchronization. Look in input.c for the implementation. */
typedef struct BSTREAM
{
int b_fd;
char *b_buffer; /* The buffer that holds characters read. */
size_t b_size; /* How big the buffer is. */
size_t b_used; /* How much of the buffer we're using, */
int b_flag; /* Flag values. */
size_t b_inputp; /* The input pointer, index into b_buffer. */
} BUFFERED_STREAM;
#if 0
extern BUFFERED_STREAM **buffers;
#endif
extern int default_buffered_input;
#endif /* BUFFERED_INPUT */
typedef union {
FILE *file;
char *string;
#if defined (BUFFERED_INPUT)
int buffered_fd;
#endif
} INPUT_STREAM;
typedef struct {
enum stream_type type;
char *name;
INPUT_STREAM location;
sh_cget_func_t *getter;
sh_cunget_func_t *ungetter;
} BASH_INPUT;
extern BASH_INPUT bash_input;
/* Functions from parse.y whose use directly or indirectly depends on the
definitions in this file. */
extern void initialize_bash_input __P((void));
extern void init_yy_io __P((sh_cget_func_t *, sh_cunget_func_t *, enum stream_type, const char *, INPUT_STREAM));
extern char *yy_input_name __P((void));
extern void with_input_from_stdin __P((void));
extern void with_input_from_string __P((char *, const char *));
extern void with_input_from_stream __P((FILE *, const char *));
extern void push_stream __P((int));
extern void pop_stream __P((void));
extern int stream_on_stack __P((enum stream_type));
extern char *read_secondary_line __P((int));
extern int find_reserved_word __P((char *));
extern void gather_here_documents __P((void));
extern void execute_variable_command __P((char *, char *));
extern int *save_token_state __P((void));
extern void restore_token_state __P((int *));
/* Functions from input.c */
extern int getc_with_restart __P((FILE *));
extern int ungetc_with_restart __P((int, FILE *));
#if defined (BUFFERED_INPUT)
/* Functions from input.c. */
extern int fd_is_bash_input __P((int));
extern int set_bash_input_fd __P((int));
extern int save_bash_input __P((int, int));
extern int check_bash_input __P((int));
extern int duplicate_buffered_stream __P((int, int));
extern BUFFERED_STREAM *fd_to_buffered_stream __P((int));
extern BUFFERED_STREAM *set_buffered_stream __P((int, BUFFERED_STREAM *));
extern BUFFERED_STREAM *open_buffered_stream __P((char *));
extern void free_buffered_stream __P((BUFFERED_STREAM *));
extern int close_buffered_stream __P((BUFFERED_STREAM *));
extern int close_buffered_fd __P((int));
extern int sync_buffered_stream __P((int));
extern int buffered_getchar __P((void));
extern int buffered_ungetchar __P((int));
extern void with_input_from_buffered_stream __P((int, char *));
#endif /* BUFFERED_INPUT */
#endif /* _INPUT_H_ */
|