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cloudbase.mooo.com Git - z180-stamp.git/blob - avr/cli_readline.c
2 * (C) Copyright 2014-2016 Leo C. <erbl259-lmu@yahoo.de>
5 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
7 * Add to readline cmdline-editing by
9 * JinHua Luo, GuangDong Linux Center, <luo.jinhua@gd-linux.com>
11 * SPDX-License-Identifier: GPL-2.0
14 #include "cli_readline.h"
23 #include "con-utils.h"
24 #include "print-utils.h"
29 char console_buffer
[CONFIG_SYS_CBSIZE
+ 1]; /* console I/O buffer */
31 #define CTL_CH(c) ((c) - 'a' + 1)
32 #define CTL_BACKSPACE ('\b')
33 #define DEL ((char)255)
34 #define DEL7 ((char)127)
37 /************************************************************************************************/
44 #define KEY_TAB '\t' // TAB key
45 #define KEY_CR '\r' // RETURN key
46 #define KEY_BACKSPACE '\b' // Backspace key
47 #define KEY_ESCAPE 0x1B // ESCAPE (pressed twice)
49 #define KEY_DOWN 0x80 // Down arrow key
50 #define KEY_UP 0x81 // Up arrow key
51 #define KEY_LEFT 0x82 // Left arrow key
52 #define KEY_RIGHT 0x83 // Right arrow key
53 #define KEY_HOME 0x84 // Home key
54 #define KEY_DC 0x85 // Delete character key
55 #define KEY_IC 0x86 // Ins char/toggle ins mode key
56 #define KEY_NPAGE 0x87 // Next-page key
57 #define KEY_PPAGE 0x88 // Previous-page key
58 #define KEY_END 0x89 // End key
59 #define KEY_BTAB 0x8A // Back tab key
60 #define KEY_F1 0x8B // Function key F1
61 #define KEY_F(n) (KEY_F1+(n)-1) // Space for additional 12 function keys
65 const FLASH
char *sequence
; /* ESC Sequence */
66 int code
; /* Keycode */
69 //typedef const FLASH struct fkey_tbl_s fkey_tbl_t;
71 #define FKEY_TBL_ITEM(_seq, _code) { FSTR(#_seq), _code }
75 static const FLASH
struct fkey_tbl_s fkey_table
[] = {
77 FKEY_TBL_ITEM(B
, KEY_DOWN
), // Down arrow key
78 FKEY_TBL_ITEM(A
, KEY_UP
), // Up arrow key
79 FKEY_TBL_ITEM(D
, KEY_LEFT
), // Left arrow key
80 FKEY_TBL_ITEM(C
, KEY_RIGHT
), // Right arrow key
81 FKEY_TBL_ITEM(1~, KEY_HOME
), // Home key
82 FKEY_TBL_ITEM(3~, KEY_DC
), // Delete character key
83 FKEY_TBL_ITEM(2~, KEY_IC
), // Ins char/toggle ins mode key
84 FKEY_TBL_ITEM(6~, KEY_NPAGE
), // Next-page key
85 FKEY_TBL_ITEM(5~, KEY_PPAGE
), // Previous-page key
86 FKEY_TBL_ITEM(4~, KEY_END
), // End key
87 FKEY_TBL_ITEM(Z
, KEY_BTAB
), // Back tab key
89 FKEY_TBL_ITEM(11~, KEY_F(1)), // Function key F1
90 FKEY_TBL_ITEM(12~, KEY_F(2)), // Function key F2
91 FKEY_TBL_ITEM(13~, KEY_F(3)), // Function key F3
92 FKEY_TBL_ITEM(14~, KEY_F(4)), // Function key F4
93 FKEY_TBL_ITEM(15~, KEY_F(5)), // Function key F5
95 FKEY_TBL_ITEM([A
, KEY_F(1)), // Function key F1
96 FKEY_TBL_ITEM([B
, KEY_F(2)), // Function key F2
97 FKEY_TBL_ITEM([C
, KEY_F(3)), // Function key F3
98 FKEY_TBL_ITEM([D
, KEY_F(4)), // Function key F4
99 FKEY_TBL_ITEM([E
, KEY_F(5)), // Function key F5
101 FKEY_TBL_ITEM(17~, KEY_F(6)), // Function key F6
102 FKEY_TBL_ITEM(18~, KEY_F(7)), // Function key F7
103 FKEY_TBL_ITEM(19~, KEY_F(8)), // Function key F8
104 FKEY_TBL_ITEM(20~, KEY_F(9)), // Function key F9
105 FKEY_TBL_ITEM(21~, KEY_F(10)), // Function key F10
106 FKEY_TBL_ITEM(23~, KEY_F(11)), // Function key F11
107 FKEY_TBL_ITEM(24~, KEY_F(12)), // Function key F12
108 { NULL
} /* Mark end of table */
125 static vtparse_state_t state
= STATE_GROUND
;
126 char buf
[CHB_SIZE
+1];
135 // debug_getch(state, ch);
140 state
= STATE_ESCAPE
;
143 if (ch
== 0x7F) // BACKSPACE on VT200 sends DEL char
144 ch
= KEY_BACKSPACE
; // map it to '\b'
151 state
= STATE_CSI_ENTRY
;
152 param
[0] = param
[1] = 0;
161 state
= STATE_GROUND
;
168 state
= STATE_GROUND
;
170 case STATE_CSI_ENTRY
:
175 if (i_buf
< CHB_SIZE
)
183 param
[i_param
] = param
[i_param
] * 10 + ch
- '0';
186 if (ch
>= '@' && ch
<= '~' && ch
!= '[') {
189 while (fkey_table
[i
].sequence
) {
190 if (! strcmp_P (buf
, fkey_table
[i
].sequence
)) {
191 ch
= fkey_table
[i
].code
;
196 if (fkey_table
[i
].sequence
== NULL
) {
197 ch
= '$'; /* KEY_ESCAPE; */
200 state
= STATE_GROUND
;
209 /************************************************************************************************/
212 * cmdline-editing related codes from vivi.
213 * Author: Janghoon Lyu <nandy@mizi.com>
218 struct hist_node_s
*next
;
221 typedef struct hist_node_s hist_node
;
224 static hist_node
*hist_head
;
225 static hist_node
*hist_cur
;
227 static void hist_reset(void)
229 hist_cur
= hist_head
;
232 static hist_node
*hist_search_node(char *line
)
234 hist_node
*p
= hist_head
;
236 while (p
&& strcmp(p
->line
, line
))
242 static hist_node
*hist_insert(char *line
)
244 hist_node
*p
= (hist_node
*) malloc(sizeof (hist_node
) + strlen(line
) + 1);
247 strcpy(p
->line
, line
);
255 static hist_node
*hist_new(char *line
)
257 hist_node
*p
= (hist_node
*) malloc(sizeof (hist_node
) + strlen(line
) + 1);
260 strcpy(p
->line
, line
);
266 static hist_node
*hist_delete(void)
269 hist_node
*q
= hist_head
;
283 static hist_node
*hist_unlink(hist_node
*pos
)
286 hist_node
*q
= hist_head
;
288 while(q
&& q
!= pos
) {
302 static uint_fast8_t hist_count(void)
304 hist_node
*p
= hist_head
;
314 static hist_node
*cread_add_to_hist(char *line
)
318 p
= hist_search_node(line
);
329 if (hist_count() > CONFIG_SYS_HIST_MAX
)
334 static char *hist_prev(void)
336 hist_node
*p
= hist_cur
;
345 static char *hist_next(void)
348 hist_node
*q
= hist_head
;
353 while(q
->next
!= hist_cur
) {
359 return p
? p
->line
: "";
362 static char *hist_search_backward(char* buf
, uint8_t num
)
364 hist_node
*p
= hist_cur
;
369 while (p
->next
&& strncmp(p
->line
, buf
, num
))
372 if(!strncmp(p
->line
, buf
, num
)) {
379 static char *hist_search_forward (char* buf
, uint8_t num
)
382 hist_node
*match
= NULL
;
383 hist_node
*q
= hist_head
;
388 while(q
->next
!= hist_cur
) {
391 if (p
&& !strncmp(p
->line
, buf
, num
))
396 hist_cur
= match
->next
;
402 static void putnstr(char *str
, int n
)
404 /* printf_P(PSTR("%.*s"), (int)n, str) */
409 static void getcmd_putch(int ch
) { putchar(ch
);}
410 static int getcmd_getch(void) { return vt_parse();}
411 static void getcmd_cbeep(void) { getcmd_putch('\a');}
413 static void beginning_of_line(uint8_t *num
)
416 getcmd_putch(CTL_BACKSPACE
);
421 static void erase_to_eol(uint_fast8_t *num
, uint_fast8_t *eol_num
)
423 if (*num
< *eol_num
) {
424 /* printf_P(PSTR("%*S"), (int)(*eol_num - *num), PSTR("")); */
425 print_blanks(*eol_num
- *num
);
427 getcmd_putch(CTL_BACKSPACE
);
428 } while (--(*eol_num
) > *num
);
432 static void refresh_to_eol(char *buf
, uint_fast8_t *num
, uint_fast8_t *eol_num
)
434 if (*num
< *eol_num
) {
435 uint_fast8_t wlen
= *eol_num
- *num
;
436 putnstr(buf
+ *num
, wlen
);
441 static void cread_add_char(char ichar
, bool insert
, uint_fast8_t *num
,
442 uint_fast8_t *eol_num
, char *buf
, uint_fast8_t len
)
447 if (insert
|| *num
== *eol_num
) {
448 if (*eol_num
> len
- 1) {
456 wlen
= *eol_num
- *num
;
458 memmove(&buf
[*num
+1], &buf
[*num
], wlen
-1);
461 putnstr(buf
+ *num
, wlen
);
464 getcmd_putch(CTL_BACKSPACE
);
466 /* echo the character */
468 putnstr(buf
+ *num
, 1);
473 static void cread_add_str(char *str
, bool insert
, uint_fast8_t *num
,
474 uint_fast8_t *eol_num
, char *buf
, uint_fast8_t len
)
478 while ((c
= *str
++) != '\0')
479 cread_add_char(c
, insert
, num
, eol_num
, buf
, len
);
482 static int cread_line(const FLASH
char *const prompt
, char *buf
,
483 uint_fast8_t len
, bool enable_history
)
485 uint_fast8_t num
= 0;
486 uint_fast8_t eol_num
= 0;
492 cread_add_str(buf
, 1, &num
, &eol_num
, buf
, len
);
497 int ichar
= getcmd_getch();
499 if ((ichar
== '\n') || (ichar
== '\r')) {
509 beginning_of_line(&num
);
511 case CTL_CH('c'): /* ^C - break */
513 *buf
= '\0'; /* discard input */
516 case CTL_CH('f'): /* forward-char */
518 getcmd_putch(buf
[num
]);
523 case CTL_CH('b'): /* backward-char */
525 getcmd_putch(CTL_BACKSPACE
);
530 case CTL_CH('d'): /* delete-char */
532 uint_fast8_t wlen
= eol_num
- num
- 1;
534 memmove(&buf
[num
], &buf
[num
+1], wlen
);
535 putnstr(buf
+ num
, wlen
);
540 getcmd_putch(CTL_BACKSPACE
);
545 case CTL_CH('k'): /* kill-line */
546 erase_to_eol(&num
, &eol_num
);
550 refresh_to_eol(buf
, &num
, &eol_num
);
557 case CTL_CH('u'): /* kill-whole-line */
558 beginning_of_line(&num
);
559 erase_to_eol(&num
, &eol_num
);
563 case 8: /* backward-delete-char */
565 uint_fast8_t wlen
= eol_num
- --num
;
567 memmove(&buf
[num
], &buf
[num
+1], wlen
);
568 getcmd_putch(CTL_BACKSPACE
);
569 putnstr(buf
+ num
, wlen
);
571 getcmd_putch(CTL_BACKSPACE
);
577 case CTL_CH('p'): /* previous-history */
579 case CTL_CH('n'): /* next-history */
580 if (enable_history
) {
583 if (ichar
== CTL_CH('p') || ichar
== KEY_UP
)
590 beginning_of_line(&num
);
591 /* overwrite current line */
592 cread_add_str(hline
, 0, &num
, &eol_num
, buf
, len
);
593 /* erase to end of line */
594 erase_to_eol(&num
, &eol_num
);
603 case KEY_PPAGE
: /* history-search-backward */
604 case KEY_NPAGE
: /* history-search-forward */
605 if (enable_history
) {
607 if (ichar
== KEY_PPAGE
)
608 hline
= hist_search_backward(buf
, num
);
610 hline
= hist_search_forward(buf
, num
);
613 uint_fast8_t num2
= num
;
614 /* overwrite current line from cursor position */
615 cread_add_str(hline
+num
, 0, &num2
, &eol_num
, buf
, len
);
616 /* erase to end of line */
617 erase_to_eol(&num2
, &eol_num
);
620 getcmd_putch(CTL_BACKSPACE
);
628 #ifdef CONFIG_AUTO_COMPLETE
632 /* do not autocomplete when in the middle */
639 col
= strlen_P(prompt
) + eol_num
;
641 if (cmd_auto_complete(prompt
, buf
, &num2
, &col
)) {
651 cread_add_char(ichar
, insert
, &num
, &eol_num
, buf
, len
);
655 while (eol_num
&& buf
[eol_num
-1] == ' ')
656 --eol_num
; /* remove trailing blanks */
657 buf
[eol_num
] = '\0'; /* lose the newline */
659 if (enable_history
&& buf
[0])
660 cread_add_to_hist(buf
);
664 /****************************************************************************/
666 int cli_readline(const FLASH
char *const prompt
, bool enable_history
)
669 * If console_buffer isn't 0-length the user will be prompted to modify
670 * it instead of entering it from scratch as desired.
672 console_buffer
[0] = '\0';
677 return cread_line(prompt
, console_buffer
, CONFIG_SYS_CBSIZE
, enable_history
);