mirror of
https://https.git.savannah.gnu.org/git/bash.git
synced 2026-06-21 12:57:58 +02:00
Chet Ramey
132 lines
4.1 KiB
C
132 lines
4.1 KiB
C
/* input.h -- Structures and unions used for reading input. */
|
|
|
|
/* Copyright (C) 1993-2023 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 3 of the License, 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. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#if !defined (_INPUT_H_)
|
|
#define _INPUT_H_
|
|
|
|
#include "stdc.h"
|
|
|
|
typedef int sh_cget_func_t (void); /* sh_ivoidfunc_t */
|
|
typedef int sh_cunget_func_t (int); /* sh_intfunc_t */
|
|
|
|
enum stream_type {st_none, st_stdin, st_stream, st_string, st_bstream};
|
|
|
|
/* 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
|
|
#define B_TEXT 0x10
|
|
#define B_SHAREDBUF 0x20 /* shared input buffer */
|
|
|
|
/* 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;
|
|
extern int bash_input_fd_changed;
|
|
|
|
#undef beof
|
|
#undef berror
|
|
|
|
#define beof(bp) (((bp)->b_flag & B_EOF) != 0)
|
|
#define berror(bp) (((bp)->b_flag & B_ERROR) != 0)
|
|
|
|
#undef bclearerror
|
|
|
|
#define bclearerror(bp) ((bp)->b_flag &= ~(B_ERROR|B_EOF))
|
|
|
|
typedef union {
|
|
FILE *file;
|
|
char *string;
|
|
int buffered_fd;
|
|
} 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 (void);
|
|
extern void init_yy_io (sh_cget_func_t *, sh_cunget_func_t *, enum stream_type, const char *, INPUT_STREAM);
|
|
extern char *yy_input_name (void);
|
|
extern void with_input_from_stdin (void);
|
|
extern void with_input_from_string (char *, const char *);
|
|
extern void with_input_from_stream (FILE *, const char *);
|
|
extern void push_stream (int);
|
|
extern void pop_stream (void);
|
|
extern int stream_on_stack (enum stream_type);
|
|
extern char *read_secondary_line (int);
|
|
extern int find_reserved_word (const char *);
|
|
extern void gather_here_documents (void);
|
|
extern void execute_variable_command (const char *, const char *);
|
|
|
|
extern int *save_token_state (void);
|
|
extern void restore_token_state (int *);
|
|
|
|
/* Functions from input.c */
|
|
extern int stream_getc (FILE *);
|
|
extern int stream_ungetc (int, FILE *);
|
|
extern size_t stream_setsize (size_t);
|
|
|
|
/* Functions from input.c. */
|
|
extern int fd_is_bash_input (int);
|
|
extern int set_bash_input_fd (int);
|
|
extern int save_bash_input (int, int);
|
|
extern int check_bash_input (int);
|
|
extern int duplicate_buffered_stream (int, int);
|
|
extern BUFFERED_STREAM *fd_to_buffered_stream (int);
|
|
extern BUFFERED_STREAM *set_buffered_stream (int, BUFFERED_STREAM *);
|
|
extern BUFFERED_STREAM *get_buffered_stream (int);
|
|
extern BUFFERED_STREAM *open_buffered_stream (char *);
|
|
extern void free_buffered_stream (BUFFERED_STREAM *);
|
|
extern int close_buffered_stream (BUFFERED_STREAM *);
|
|
extern int close_buffered_fd (int);
|
|
extern int sync_buffered_stream (int);
|
|
extern int fd_berror (int);
|
|
extern int buffered_getchar (void);
|
|
extern int buffered_ungetchar (int);
|
|
extern void with_input_from_buffered_stream (int, char *);
|
|
|
|
#endif /* _INPUT_H_ */
|