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comparison packages/redboot/current/src/io.c @ 195:67850532eebb

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Merge from eCos master repository on 2001-11-02-06:43:03-GMT
author jlarmour
date Fri, 02 Nov 2001 16:12:33 +0000
parents feb0fcf83327
children 9b55e9c69693
comparison
equal deleted inserted replaced
194:feb0fcf83327 195:67850532eebb
275 #endif 275 #endif
276 276
277 // 277 //
278 // Read a line of input from the user 278 // Read a line of input from the user
279 // Return: 279 // Return:
280 // n: 'n' valid characters received 280 // _GETS_OK: 'n' valid characters received
281 // 0: '$' (GDB lead-in) 281 // _GETS_GDB: '$' (GDB lead-in)
282 // -1: No input before timeout 282 // _GETS_TIMEOUT: No input before timeout
283 // -2: ^C typed 283 // _GETS_CTRLC: ^C typed
284 // 284 //
285 int 285 int
286 _rb_gets(char *buf, int buflen, int timeout) 286 _rb_gets_preloaded(char *buf, int buflen, int timeout)
287 { 287 {
288 char *ip = buf; // Insertion point 288 char *ip = buf; // Insertion point
289 char *eol = buf; // End of line 289 char *eol = buf; // End of line
290 char c; 290 char c;
291 bool res = false; 291 bool res = false;
305 static int _cl_index = -1; // Last known command line 305 static int _cl_index = -1; // Last known command line
306 static int _cl_max_index = -1; // Last command in buffers 306 static int _cl_max_index = -1; // Last command in buffers
307 int _index = _cl_index; // Last saved line 307 int _index = _cl_index; // Last saved line
308 char *xp; 308 char *xp;
309 #endif 309 #endif
310
311 // Display current buffer data
312 while (*eol) {
313 mon_write_char(*eol++);
314 }
315 ip = eol;
310 316
311 while (true) { 317 while (true) {
312 #ifdef CYGFUN_REDBOOT_BOOT_SCRIPT 318 #ifdef CYGFUN_REDBOOT_BOOT_SCRIPT
313 if (getc_script(&c)) 319 if (getc_script(&c))
314 do_idle(false); 320 do_idle(false);
421 mon_write_char('\b'); 427 mon_write_char('\b');
422 } 428 }
423 eol = ip; 429 eol = ip;
424 } 430 }
425 break; 431 break;
432 case CTRL('D'):
433 // Erase the character under the cursor
434 if (ip != eol) {
435 xp = ip;
436 eol--;
437 while (xp != eol) {
438 *xp = *(xp+1);
439 mon_write_char(*xp++);
440 }
441 mon_write_char(' '); // Erases last character
442 mon_write_char('\b');
443 while (xp-- != ip) {
444 mon_write_char('\b');
445 }
446 }
447 break;
426 #endif // CYGNUM_REDBOOT_CMD_LINE_EDITING 448 #endif // CYGNUM_REDBOOT_CMD_LINE_EDITING
427 case CTRL('C'): // ^C 449 case CTRL('C'): // ^C
428 if (ip == buf) { 450 // Abort current input
429 diag_printf("^C\n"); 451 diag_printf("^C\n");
430 return _GETS_CTRLC; 452 return _GETS_CTRLC;
431 }
432 *ip++ = c;
433 break;
434 case '\n': 453 case '\n':
435 case '\r': 454 case '\r':
436 // If previous character was the "other" end-of-line, ignore this one 455 // If previous character was the "other" end-of-line, ignore this one
437 if (((c == '\n') && (last_ch == '\r')) || 456 if (((c == '\n') && (last_ch == '\r')) ||
438 ((c == '\r') && (last_ch == '\n'))) { 457 ((c == '\r') && (last_ch == '\n'))) {
444 mon_write_char('\r'); 463 mon_write_char('\r');
445 mon_write_char('\n'); 464 mon_write_char('\n');
446 } 465 }
447 last_ch = c; 466 last_ch = c;
448 #if CYGNUM_REDBOOT_CMD_LINE_EDITING != 0 467 #if CYGNUM_REDBOOT_CMD_LINE_EDITING != 0
449 // Save current line 468 if (cmd_history) {
450 if (++_cl_index == _CL_NUM_LINES) _cl_index = 0; 469 // Save current line - only when enabled
451 if (_cl_index > _cl_max_index) _cl_max_index = _cl_index; 470 if (++_cl_index == _CL_NUM_LINES) _cl_index = 0;
452 strcpy(_cl_lines[_cl_index], buf); 471 if (_cl_index > _cl_max_index) _cl_max_index = _cl_index;
472 strcpy(_cl_lines[_cl_index], buf);
473 }
453 #endif 474 #endif
454 return _GETS_OK; 475 return _GETS_OK;
455 case '\b': 476 case '\b':
456 case 0x7F: // DEL 477 case 0x7F: // DEL
457 if (ip != buf) { 478 if (ip != buf) {
552 if (ip == buf + buflen) // Buffer full 573 if (ip == buf + buflen) // Buffer full
553 return buflen; 574 return buflen;
554 } 575 }
555 } 576 }
556 577
578 int
579 _rb_gets(char *buf, int buflen, int timeout)
580 {
581 *buf = '\0'; // Empty buffer
582 return _rb_gets_preloaded(buf, buflen, timeout);
583 }
584
557 bool 585 bool
558 verify_action(char *fmt, ...) 586 verify_action(char *fmt, ...)
559 { 587 {
560 va_list ap; 588 va_list ap;
561 char ans[8]; 589 char ans[8];