48879d8ac540acc66cf674bdfd8940535b7a0036
8 * ldisc.c: PuTTY line disciplines
11 static void c_write (char *buf
, int len
) {
13 int new_head
= (inbuf_head
+ 1) & INBUF_MASK
;
14 if (new_head
!= inbuf_reap
) {
15 inbuf
[inbuf_head
] = *buf
++;
16 inbuf_head
= new_head
;
21 static char *term_buf
= NULL
;
22 static int term_buflen
= 0, term_bufsiz
= 0, term_quotenext
= 0;
24 static int plen(unsigned char c
) {
25 if ((c
>= 32 && c
<= 126) ||
29 return 2; /* ^x for some x */
31 return 4; /* <XY> for hex XY */
34 static void pwrite(unsigned char c
) {
35 if ((c
>= 32 && c
<= 126) ||
41 cc
[1] = (c
== 127 ?
'?' : c
+ 0x40);
46 sprintf(cc
, "<%02X>", c
);
51 static void bsb(int n
) {
53 c_write("\010 \010", 3);
56 static void term_send(char *buf
, int len
) {
60 switch (term_quotenext ?
' ' : c
) {
62 * ^h/^?: delete one char and output one BSB
63 * ^w: delete, and output BSBs, to return to last space/nonspace
65 * ^u: delete, and output BSBs, to return to BOL
66 * ^r: echo "^R\n" and redraw line
68 * ^d: if at BOL, end of file and close connection, else send line
70 * ^m/^j: send line-plus-\r\n and reset to BOL
72 case 8: case 127: /* backspace/delete */
73 if (term_buflen
> 0) {
74 bsb(plen(term_buf
[term_buflen
-1]));
78 case 23: /* ^W delete word */
79 while (term_buflen
> 0) {
80 bsb(plen(term_buf
[term_buflen
-1]));
82 if (term_buflen
> 0 &&
83 isspace(term_buf
[term_buflen
-1]) &&
84 !isspace(term_buf
[term_buflen
]))
88 case 21: /* ^U delete line */
89 while (term_buflen
> 0) {
90 bsb(plen(term_buf
[term_buflen
-1]));
94 case 18: /* ^R redraw line */
98 for (i
= 0; i
< term_buflen
; i
++)
102 case 22: /* ^V quote next char */
103 term_quotenext
= TRUE
;
105 case 4: /* ^D logout or send */
106 if (term_buflen
== 0) {
109 back
->send(term_buf
, term_buflen
);
113 case 13: case 10: /* ^M/^J send with newline */
114 back
->send(term_buf
, term_buflen
);
115 back
->send("\r\n", 2);
119 default: /* get to this label from ^V handler */
120 if (term_buflen
>= term_bufsiz
) {
121 term_bufsiz
= term_buflen
+ 256;
122 term_buf
= saferealloc(term_buf
, term_bufsiz
);
124 term_buf
[term_buflen
++] = c
;
126 term_quotenext
= FALSE
;
132 static void simple_send(char *buf
, int len
) {
133 back
->send(buf
, len
);
136 Ldisc ldisc_term
= { term_send
};
137 Ldisc ldisc_simple
= { simple_send
};