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Rethink the whole line discipline architecture. Instead of having

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multiple switchable line disciplines, we now have a single unified
one which changes its behaviour based on option settings. Each
option setting can be suggested by the back end and/or the terminal
handler, and can be forcibly overridden by the configuration. Local
echo and local line editing are separate, independently switchable,
options.

[originally from svn r895]
This commit is contained in:
Simon Tatham
2001-01-24 14:08:20 +00:00
parent 89505459e3
commit 7a79df8fe6
12 changed files with 329 additions and 217 deletions
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28
putty.h
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@ -115,6 +115,21 @@ typedef enum {
VT_XWINDOWS, VT_OEMANSI, VT_OEMONLY, VT_POORMAN
} VT_Mode;
enum {
/*
* Line discipline option states: off, on, up to the backend.
*/
LD_YES, LD_NO, LD_BACKEND
};
enum {
/*
* Line discipline options which the backend might try to control.
*/
LD_EDIT, /* local line editing */
LD_ECHO /* local echo */
};
typedef struct {
char *(*init) (char *host, int port, char **realhost);
void (*send) (char *buf, int len);
@ -122,6 +137,7 @@ typedef struct {
void (*special) (Telnet_Special code);
Socket (*socket) (void);
int (*sendok) (void);
int (*ldisc) (int);
int default_port;
} Backend;
@ -133,12 +149,6 @@ extern struct backend_list {
Backend *backend;
} backends[];
typedef struct {
void (*send) (char *buf, int len);
} Ldisc;
GLOBAL Ldisc *ldisc;
typedef struct {
/* Basic options */
char host[512];
@ -176,7 +186,8 @@ typedef struct {
int alt_f4; /* is it special? */
int alt_space; /* is it special? */
int alt_only; /* is it special? */
int ldisc_term;
int localecho;
int localedit;
int alwaysontop;
int scroll_on_key;
int scroll_on_disp;
@ -333,6 +344,7 @@ void term_invalidate(void);
void term_blink(int set_cursor);
void term_paste(void);
void term_nopaste(void);
int telnet_ldisc(int option);
void from_backend(int is_stderr, char *data, int len);
void logfopen (void);
void logfclose (void);
@ -367,7 +379,7 @@ extern Backend ssh_backend;
* Exports from ldisc.c.
*/
extern Ldisc ldisc_term, ldisc_simple;
extern void ldisc_send(char *buf, int len);
/*
* Exports from sshrand.c.