/[LeafOK_CVS]/lbbs/src/screen.c
ViewVC logotype

Annotation of /lbbs/src/screen.c

Parent Directory Parent Directory | Revision Log Revision Log

Revision 1.126 - (hide annotations)
Fri Nov 7 13:22:57 2025 UTC (4 months, 1 week ago) by sysadm
Branch: MAIN
Changes since 1.125: +2 -2 lines
Content type: text/x-csrc 
Fix bug: display_data does not exit on EOF when eof_exit is set
1 sysadm 1.121 /* SPDX-License-Identifier: GPL-3.0-or-later */
2     /*
3     * screen
4     * - advanced telnet-based user interactive input / output features
5     *
6 sysadm 1.122 * Copyright (C) 2004-2025 Leaflet <leaflet@leafok.com>
7 sysadm 1.121 */
8 sysadm 1.1
9 sysadm 1.9 #include "bbs.h"
10 sysadm 1.6 #include "common.h"
11 sysadm 1.89 #include "editor.h"
12 sysadm 1.54 #include "file_loader.h"
13 sysadm 1.102 #include "io.h"
14     #include "log.h"
15 sysadm 1.101 #include "login.h"
16 sysadm 1.102 #include "screen.h"
17     #include "str_process.h"
18     #include <ctype.h>
19     #include <errno.h>
20 sysadm 1.52 #include <fcntl.h>
21 sysadm 1.98 #include <string.h>
22 sysadm 1.102 #include <stdlib.h>
23 sysadm 1.41 #include <unistd.h>
24 sysadm 1.102 #include <sys/param.h>
25 sysadm 1.6 #include <sys/stat.h>
26 sysadm 1.55 #include <sys/shm.h>
27 sysadm 1.102 #include <sys/types.h>
28 sysadm 1.1
29 sysadm 1.124 const char CTRL_SEQ_CLR_LINE[] = "\033[K";
30 sysadm 1.9
31 sysadm 1.124 static const int ACTIVE_BOARD_HEIGHT = 8;
32    
33     static const int STR_TOP_LEFT_MAX_LEN = 80;
34     static const int STR_TOP_MIDDLE_MAX_LEN = 40;
35     static const int STR_TOP_RIGHT_MAX_LEN = 80;
36 sysadm 1.70
37 sysadm 1.119 static size_t get_time_str(char *s, size_t len)
38 sysadm 1.107 {
39     time_t curtime;
40     struct tm local_tm;
41    
42     time(&curtime);
43     localtime_r(&curtime, &local_tm);
44 sysadm 1.119 size_t j = strftime(s, len, "%m/%d %H:%M %Z", &local_tm);
45 sysadm 1.107
46 sysadm 1.119 return j;
47 sysadm 1.107 }
48    
49 sysadm 1.21 void moveto(int row, int col)
50 sysadm 1.1 {
51 sysadm 1.21 if (row >= 0)
52     {
53     prints("\033[%d;%dH", row, col);
54     }
55     else
56     {
57     prints("\r");
58     }
59 sysadm 1.1 }
60    
61 sysadm 1.21 void clrtoeol()
62 sysadm 1.1 {
63 sysadm 1.63 prints(CTRL_SEQ_CLR_LINE);
64 sysadm 1.2 }
65    
66 sysadm 1.21 void clrline(int line_begin, int line_end)
67 sysadm 1.5 {
68 sysadm 1.21 int i;
69 sysadm 1.6
70 sysadm 1.21 for (i = line_begin; i <= line_end; i++)
71     {
72     moveto(i, 0);
73 sysadm 1.63 prints(CTRL_SEQ_CLR_LINE);
74 sysadm 1.21 }
75 sysadm 1.5 }
76    
77 sysadm 1.21 void clrtobot(int line_begin)
78 sysadm 1.16 {
79 sysadm 1.21 moveto(line_begin, 0);
80 sysadm 1.25 prints("\033[J");
81     moveto(line_begin, 0);
82 sysadm 1.16 }
83    
84 sysadm 1.21 void clearscr()
85 sysadm 1.2 {
86 sysadm 1.23 prints("\033[2J");
87 sysadm 1.21 moveto(0, 0);
88 sysadm 1.6 }
89    
90 sysadm 1.113 inline int press_any_key()
91     {
92 sysadm 1.114 return press_any_key_ex(" \033[1;33m按任意键继续...\033[m", 60);
93 sysadm 1.113 }
94    
95 sysadm 1.114 int press_any_key_ex(const char *msg, int sec)
96 sysadm 1.6 {
97 sysadm 1.112 int ch = 0;
98     int duration = 0;
99     time_t t_begin = time(NULL);
100    
101 sysadm 1.53 moveto(SCREEN_ROWS, 0);
102 sysadm 1.21 clrtoeol();
103 sysadm 1.6
104 sysadm 1.113 prints(msg);
105 sysadm 1.21 iflush();
106 sysadm 1.6
107 sysadm 1.114 igetch_reset();
108    
109 sysadm 1.112 do
110     {
111 sysadm 1.114 ch = igetch_t(sec - duration);
112 sysadm 1.112 duration = (int)(time(NULL) - t_begin);
113     } while (!SYS_server_exit && ch == 0 && duration < 60);
114    
115     return ch;
116 sysadm 1.1 }
117    
118 sysadm 1.21 void set_input_echo(int echo)
119 sysadm 1.7 {
120 sysadm 1.21 if (echo)
121     {
122     outc('\x83'); // ASCII code 131
123     }
124     else
125     {
126 sysadm 1.111 // outc ('\x85'); // ASCII code 133
127 sysadm 1.21 prints("\xff\xfb\x01\xff\xfb\x03");
128     }
129 sysadm 1.111 iflush();
130 sysadm 1.7 }
131    
132 sysadm 1.124 static int _str_input(char *buffer, int buf_size, int max_display_len, enum io_echo_t echo_mode)
133 sysadm 1.1 {
134 sysadm 1.104 int ch;
135 sysadm 1.38 int offset = 0;
136 sysadm 1.104 int eol;
137     int display_len;
138     char input_str[4];
139     int str_len = 0;
140     char c;
141 sysadm 1.1
142 sysadm 1.38 buffer[buf_size - 1] = '\0';
143 sysadm 1.104 offset = split_line(buffer, max_display_len, &eol, &display_len, 0);
144 sysadm 1.21
145 sysadm 1.47 igetch_reset();
146    
147 sysadm 1.48 while (!SYS_server_exit)
148 sysadm 1.1 {
149 sysadm 1.123 ch = igetch_t(MIN(BBS_max_user_idle_time, 60));
150 sysadm 1.48
151 sysadm 1.104 if (ch == CR)
152 sysadm 1.22 {
153 sysadm 1.21 break;
154 sysadm 1.22 }
155 sysadm 1.104 else if (ch == KEY_TIMEOUT || ch == KEY_NULL) // timeout or broken pipe
156 sysadm 1.41 {
157     return -1;
158     }
159 sysadm 1.104 else if (ch == LF || ch == '\0')
160 sysadm 1.22 {
161 sysadm 1.21 continue;
162 sysadm 1.22 }
163 sysadm 1.104 else if (ch == BACKSPACE)
164 sysadm 1.21 {
165     if (offset > 0)
166     {
167 sysadm 1.31 offset--;
168 sysadm 1.104 if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
169 sysadm 1.31 {
170 sysadm 1.115 while (offset > 0 && (buffer[offset] & 0xc0) != 0xc0)
171 sysadm 1.31 {
172 sysadm 1.104 offset--;
173 sysadm 1.31 }
174 sysadm 1.104 display_len--;
175     prints("\033[D \033[D");
176 sysadm 1.31 }
177     buffer[offset] = '\0';
178 sysadm 1.104 display_len--;
179 sysadm 1.31 prints("\033[D \033[D");
180 sysadm 1.21 iflush();
181     }
182     continue;
183     }
184 sysadm 1.104 else if (ch > 255 || iscntrl(ch))
185 sysadm 1.21 {
186     continue;
187     }
188 sysadm 1.104 else if ((ch & 0xff80) == 0x80) // head of multi-byte character
189 sysadm 1.21 {
190 sysadm 1.104 str_len = 0;
191 sysadm 1.115 c = (char)(ch & 0xf0);
192     while (c & 0x80)
193 sysadm 1.104 {
194     input_str[str_len] = (char)(ch - 256);
195     str_len++;
196 sysadm 1.115 c = (c & 0x7f) << 1;
197 sysadm 1.104
198 sysadm 1.115 if ((c & 0x80) == 0) // Input completed
199 sysadm 1.104 {
200     break;
201     }
202    
203     // Expect additional bytes of input
204     ch = igetch(100); // 0.1 second
205     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
206     {
207 sysadm 1.106 #ifdef _DEBUG
208 sysadm 1.104 log_error("Ignore %d bytes of incomplete UTF8 character\n", str_len);
209 sysadm 1.106 #endif
210 sysadm 1.104 str_len = 0;
211     break;
212     }
213     }
214    
215     if (str_len == 0) // Incomplete input
216     {
217     continue;
218     }
219    
220     if (offset + str_len > buf_size - 1 || display_len + 2 > max_display_len) // No enough space for Chinese character
221 sysadm 1.31 {
222     outc('\a');
223     iflush();
224     continue;
225     }
226 sysadm 1.104
227     memcpy(buffer + offset, input_str, (size_t)str_len);
228     offset += str_len;
229     buffer[offset] = '\0';
230     display_len += 2;
231    
232     switch (echo_mode)
233     {
234     case DOECHO:
235     prints(input_str);
236     break;
237     case NOECHO:
238     prints("**");
239     break;
240     }
241 sysadm 1.21 }
242 sysadm 1.104 else if (ch >= 32 && ch < 127) // Printable character
243 sysadm 1.21 {
244 sysadm 1.104 if (offset + 1 > buf_size - 1 || display_len + 1 > max_display_len)
245     {
246     outc('\a');
247     iflush();
248     continue;
249     }
250 sysadm 1.43
251 sysadm 1.104 buffer[offset++] = (char)ch;
252     buffer[offset] = '\0';
253     display_len++;
254 sysadm 1.43
255 sysadm 1.104 switch (echo_mode)
256     {
257     case DOECHO:
258     outc((char)ch);
259     break;
260     case NOECHO:
261     outc('*');
262     break;
263     }
264 sysadm 1.21 }
265 sysadm 1.104 else // Invalid character
266 sysadm 1.21 {
267 sysadm 1.104 continue;
268 sysadm 1.21 }
269 sysadm 1.104
270     iflush();
271 sysadm 1.6 }
272 sysadm 1.1
273 sysadm 1.21 return offset;
274 sysadm 1.1 }
275    
276 sysadm 1.124 int str_input(char *buffer, int buf_size, enum io_echo_t echo_mode)
277 sysadm 1.18 {
278 sysadm 1.32 int len;
279    
280     buffer[0] = '\0';
281 sysadm 1.21
282 sysadm 1.104 len = _str_input(buffer, buf_size, buf_size, echo_mode);
283 sysadm 1.21
284 sysadm 1.32 prints("\r\n");
285     iflush();
286 sysadm 1.21
287 sysadm 1.32 return len;
288 sysadm 1.115 }
289 sysadm 1.18
290 sysadm 1.108 int get_data(int row, int col, char *prompt, char *buffer, int buf_size, int max_display_len)
291 sysadm 1.15 {
292 sysadm 1.108 int len = 0;
293     int col_cur = 0;
294     int ch;
295     int offset = 0;
296     int eol;
297     int display_len;
298     char input_str[4];
299     int str_len = 0;
300     char c;
301    
302     buffer[buf_size - 1] = '\0';
303     offset = split_line(buffer, max_display_len, &eol, &display_len, 0);
304     buffer[offset] = '\0';
305     len = offset;
306     col_cur = col + str_length(prompt, 1) + display_len;
307 sysadm 1.15
308 sysadm 1.21 moveto(row, col);
309 sysadm 1.80 prints("%s", prompt);
310     prints("%s", buffer);
311 sysadm 1.108 prints("%*s", max_display_len - display_len, "");
312     moveto(row, col_cur);
313 sysadm 1.21 iflush();
314 sysadm 1.15
315 sysadm 1.108 igetch_reset();
316    
317     while (!SYS_server_exit)
318     {
319 sysadm 1.123 ch = igetch_t(MIN(BBS_max_user_idle_time, 60));
320 sysadm 1.108
321     if (ch == CR)
322     {
323     break;
324     }
325     else if (ch == KEY_TIMEOUT || ch == KEY_NULL) // timeout or broken pipe
326     {
327     return -1;
328     }
329     else if (ch == LF || ch == '\0')
330     {
331     continue;
332     }
333     else if (ch == BACKSPACE)
334     {
335     if (offset > 0)
336     {
337     str_len = 1;
338     offset--;
339     if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
340     {
341 sysadm 1.115 while (offset > 0 && (buffer[offset] & 0xc0) != 0xc0)
342 sysadm 1.108 {
343     str_len++;
344     offset--;
345     }
346     display_len--;
347     col_cur--;
348     }
349    
350     memmove(buffer + offset, buffer + offset + str_len, (size_t)(len - offset - str_len));
351     len -= str_len;
352     buffer[len] = '\0';
353     display_len--;
354     col_cur--;
355    
356     moveto(row, col_cur);
357     prints("%s", buffer + offset);
358     prints("%*s", max_display_len - display_len, "");
359     moveto(row, col_cur);
360     iflush();
361     }
362     continue;
363     }
364     else if (ch == KEY_DEL)
365     {
366     if (offset < len)
367     {
368     if ((buffer[offset] & 0x80) == 0x80) // head of multi-byte character
369     {
370     str_len = 0;
371 sysadm 1.115 c = (char)(buffer[offset] & 0xf0);
372     while (c & 0x80)
373 sysadm 1.108 {
374     str_len++;
375 sysadm 1.115 c = (c & 0x7f) << 1;
376 sysadm 1.108 }
377     display_len--;
378     }
379     else
380     {
381     str_len = 1;
382     }
383    
384     memmove(buffer + offset, buffer + offset + str_len, (size_t)(len - offset - str_len));
385     len -= str_len;
386     buffer[len] = '\0';
387     display_len--;
388    
389     moveto(row, col_cur);
390     prints("%s", buffer + offset);
391     prints("%*s", max_display_len - display_len, "");
392     moveto(row, col_cur);
393     iflush();
394     }
395     continue;
396     }
397     else if (ch == KEY_LEFT)
398     {
399     if (offset > 0)
400     {
401     str_len = 1;
402     offset--;
403     if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
404     {
405 sysadm 1.115 while (offset > 0 && (buffer[offset] & 0xc0) != 0xc0)
406 sysadm 1.108 {
407     str_len++;
408     offset--;
409     }
410     col_cur--;
411     }
412     col_cur--;
413    
414     moveto(row, col_cur);
415     iflush();
416     }
417     continue;
418     }
419     else if (ch == KEY_RIGHT)
420     {
421     if (offset < len)
422     {
423     str_len = 0;
424     if ((buffer[offset] & 0x80) == 0x80) // head of multi-byte character
425     {
426 sysadm 1.115 c = (char)(buffer[offset] & 0xf0);
427     while (c & 0x80)
428 sysadm 1.108 {
429     str_len++;
430 sysadm 1.115 c = (c & 0x7f) << 1;
431 sysadm 1.108 }
432     col_cur++;
433     }
434     else
435     {
436     str_len = 1;
437     }
438    
439     col_cur++;
440     offset += str_len;
441    
442     moveto(row, col_cur);
443     iflush();
444     }
445     continue;
446     }
447     else if (ch == KEY_HOME || ch == KEY_UP)
448     {
449     if (offset > 0)
450     {
451     offset = 0;
452     col_cur = col + str_length(prompt, 1);
453    
454     moveto(row, col_cur);
455     iflush();
456     }
457     continue;
458     }
459     else if (ch == KEY_END || ch == KEY_DOWN)
460     {
461     if (offset < len)
462     {
463     offset = len;
464     col_cur = col + str_length(prompt, 1) + display_len;
465    
466     moveto(row, col_cur);
467     iflush();
468     }
469     continue;
470     }
471     else if (ch > 255 || iscntrl(ch))
472     {
473     continue;
474     }
475     else if ((ch & 0xff80) == 0x80) // head of multi-byte character
476     {
477     str_len = 0;
478 sysadm 1.115 c = (char)(ch & 0xf0);
479     while (c & 0x80)
480 sysadm 1.108 {
481     input_str[str_len] = (char)(ch - 256);
482     str_len++;
483 sysadm 1.115 c = (c & 0x7f) << 1;
484 sysadm 1.108
485 sysadm 1.115 if ((c & 0x80) == 0) // Input completed
486 sysadm 1.108 {
487     break;
488     }
489    
490     // Expect additional bytes of input
491     ch = igetch(100); // 0.1 second
492     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
493     {
494     #ifdef _DEBUG
495     log_error("Ignore %d bytes of incomplete UTF8 character\n", str_len);
496     #endif
497     str_len = 0;
498     break;
499     }
500     }
501    
502     if (str_len == 0) // Incomplete input
503     {
504     continue;
505     }
506    
507     if (len + str_len > buf_size - 1 || display_len + 2 > max_display_len) // No enough space for Chinese character
508     {
509     outc('\a');
510     iflush();
511     continue;
512     }
513    
514     memmove(buffer + offset + str_len, buffer + offset, (size_t)(len - offset));
515     memcpy(buffer + offset, input_str, (size_t)str_len);
516     len += str_len;
517     buffer[len] = '\0';
518     display_len += 2;
519    
520     moveto(row, col_cur);
521     prints("%s", buffer + offset);
522     prints("%*s", max_display_len - display_len, "");
523    
524     col_cur += 2;
525    
526     moveto(row, col_cur);
527     iflush();
528    
529     offset += str_len;
530     }
531     else if (ch >= 32 && ch < 127) // Printable character
532     {
533     if (len + 1 > buf_size - 1 || display_len + 1 > max_display_len)
534     {
535     outc('\a');
536     iflush();
537     continue;
538     }
539    
540     memmove(buffer + offset + 1, buffer + offset, (size_t)(len - offset));
541     buffer[offset] = (char)ch;
542     len++;
543     buffer[len] = '\0';
544     display_len++;
545    
546     moveto(row, col_cur);
547     prints("%s", buffer + offset);
548     prints("%*s", max_display_len - display_len, "");
549    
550     col_cur++;
551    
552     moveto(row, col_cur);
553     iflush();
554    
555     offset++;
556     }
557     else // Invalid character
558     {
559     continue;
560     }
561     }
562 sysadm 1.21
563     return len;
564 sysadm 1.15 }
565    
566 sysadm 1.89 int display_data(const void *p_data, long display_line_total, const long *p_line_offsets, int eof_exit,
567 sysadm 1.81 display_data_key_handler key_handler, const char *help_filename)
568 sysadm 1.1 {
569 sysadm 1.37 static int show_help = 1;
570 sysadm 1.26 char buffer[LINE_BUFFER_LEN];
571 sysadm 1.85 DISPLAY_CTX ctx;
572 sysadm 1.81 int ch = 0;
573 sysadm 1.91 int input_ok;
574     const int screen_begin_row = 1;
575 sysadm 1.95 const int screen_row_total = SCREEN_ROWS - screen_begin_row;
576     int output_current_row = screen_begin_row;
577     int output_end_row = SCREEN_ROWS - 1;
578 sysadm 1.54 long int line_current = 0;
579 sysadm 1.34 long int len;
580     long int percentile;
581 sysadm 1.54 int loop;
582 sysadm 1.78 int eol, display_len;
583 sysadm 1.52
584 sysadm 1.95 clrline(output_current_row, SCREEN_ROWS);
585 sysadm 1.6
586 sysadm 1.81 // update msg_ext with extended key handler
587 sysadm 1.85 if (key_handler(&ch, &ctx) != 0)
588 sysadm 1.81 {
589     return ch;
590     }
591    
592 sysadm 1.54 loop = 1;
593 sysadm 1.44 while (!SYS_server_exit && loop)
594 sysadm 1.6 {
595 sysadm 1.126 if (eof_exit > 0 && line_current >= display_line_total)
596 sysadm 1.27 {
597 sysadm 1.82 if (eof_exit == 1)
598 sysadm 1.27 {
599     ch = press_any_key();
600     }
601 sysadm 1.82 else // if (eof_exit == 2)
602 sysadm 1.27 {
603     iflush();
604     }
605    
606     loop = 0;
607     break;
608     }
609    
610 sysadm 1.95 if (line_current >= display_line_total || output_current_row > output_end_row)
611 sysadm 1.21 {
612 sysadm 1.95 ctx.reach_begin = (line_current < output_current_row ? 1 : 0);
613 sysadm 1.85
614 sysadm 1.95 if (line_current - (output_current_row - screen_begin_row) + screen_row_total < display_line_total)
615 sysadm 1.27 {
616 sysadm 1.95 percentile = (line_current - (output_current_row - screen_begin_row) + screen_row_total) * 100 / display_line_total;
617 sysadm 1.85 ctx.reach_end = 0;
618 sysadm 1.27 }
619     else
620     {
621     percentile = 100;
622 sysadm 1.85 ctx.reach_end = 1;
623 sysadm 1.27 }
624 sysadm 1.6
625 sysadm 1.95 ctx.line_top = line_current - (output_current_row - screen_begin_row) + 1;
626     ctx.line_bottom = MIN(line_current - (output_current_row - screen_begin_row) + screen_row_total, display_line_total);
627 sysadm 1.85
628 sysadm 1.78 snprintf(buffer, sizeof(buffer),
629 sysadm 1.104 "\033[1;44;33m第\033[32m%ld\033[33m-\033[32m%ld\033[33m行 (\033[32m%ld%%\033[33m) %s",
630 sysadm 1.85 ctx.line_top,
631     ctx.line_bottom,
632     percentile,
633     ctx.msg);
634 sysadm 1.78
635 sysadm 1.97 len = split_line(buffer, SCREEN_COLS, &eol, &display_len, 1);
636 sysadm 1.81 for (; display_len < SCREEN_COLS; display_len++)
637 sysadm 1.78 {
638     buffer[len++] = ' ';
639     }
640     buffer[len] = '\0';
641     strncat(buffer, "\033[m", sizeof(buffer) - 1 - strnlen(buffer, sizeof(buffer)));
642    
643 sysadm 1.53 moveto(SCREEN_ROWS, 0);
644 sysadm 1.80 prints("%s", buffer);
645 sysadm 1.26 iflush();
646 sysadm 1.6
647 sysadm 1.26 input_ok = 0;
648 sysadm 1.44 while (!SYS_server_exit && !input_ok)
649 sysadm 1.21 {
650 sysadm 1.123 ch = igetch_t(BBS_max_user_idle_time);
651 sysadm 1.94 input_ok = 1;
652    
653 sysadm 1.110 if (ch != KEY_NULL && ch != KEY_TIMEOUT)
654     {
655     BBS_last_access_tm = time(NULL);
656     }
657    
658 sysadm 1.81 // extended key handler
659 sysadm 1.85 if (key_handler(&ch, &ctx) != 0)
660 sysadm 1.81 {
661     goto cleanup;
662     }
663    
664 sysadm 1.26 switch (ch)
665 sysadm 1.21 {
666 sysadm 1.67 case KEY_NULL:
667 sysadm 1.110 log_error("KEY_NULL\n");
668     goto cleanup;
669 sysadm 1.41 case KEY_TIMEOUT:
670 sysadm 1.110 log_error("User input timeout\n");
671 sysadm 1.41 goto cleanup;
672 sysadm 1.50 case KEY_HOME:
673 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
674 sysadm 1.84 {
675     break;
676     }
677 sysadm 1.54 line_current = 0;
678 sysadm 1.95 output_current_row = screen_begin_row;
679     output_end_row = SCREEN_ROWS - 1;
680     clrline(output_current_row, SCREEN_ROWS);
681 sysadm 1.50 break;
682     case KEY_END:
683 sysadm 1.91 if (display_line_total < screen_row_total)
684 sysadm 1.83 {
685 sysadm 1.84 break;
686 sysadm 1.83 }
687 sysadm 1.91 line_current = display_line_total - screen_row_total;
688 sysadm 1.95 output_current_row = screen_begin_row;
689     output_end_row = SCREEN_ROWS - 1;
690     clrline(output_current_row, SCREEN_ROWS);
691 sysadm 1.50 break;
692 sysadm 1.26 case KEY_UP:
693 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
694 sysadm 1.21 {
695     break;
696 sysadm 1.26 }
697 sysadm 1.95 line_current -= output_current_row;
698     output_current_row = screen_begin_row;
699 sysadm 1.89 // screen_end_line = screen_begin_line;
700 sysadm 1.39 // prints("\033[T"); // Scroll down 1 line
701 sysadm 1.95 output_end_row = SCREEN_ROWS - 1; // Legacy Fterm only works with this line
702 sysadm 1.26 break;
703 sysadm 1.49 case CR:
704 sysadm 1.26 case KEY_DOWN:
705 sysadm 1.95 if (line_current + (screen_row_total - (output_current_row - screen_begin_row)) >= display_line_total) // Reach end
706 sysadm 1.26 {
707 sysadm 1.21 break;
708 sysadm 1.26 }
709 sysadm 1.95 line_current += (screen_row_total - (output_current_row - screen_begin_row));
710     output_current_row = screen_row_total;
711     output_end_row = SCREEN_ROWS - 1;
712 sysadm 1.53 moveto(SCREEN_ROWS, 0);
713 sysadm 1.26 clrtoeol();
714 sysadm 1.104 // prints("\033[S"); // Scroll up 1 line
715 sysadm 1.103 prints("\n"); // Legacy Cterm only works with this line
716 sysadm 1.26 break;
717     case KEY_PGUP:
718 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
719 sysadm 1.26 {
720 sysadm 1.21 break;
721 sysadm 1.26 }
722 sysadm 1.95 line_current -= ((screen_row_total - 1) + (output_current_row - screen_begin_row));
723 sysadm 1.54 if (line_current < 0)
724 sysadm 1.26 {
725 sysadm 1.54 line_current = 0;
726 sysadm 1.26 }
727 sysadm 1.95 output_current_row = screen_begin_row;
728     output_end_row = SCREEN_ROWS - 1;
729     clrline(output_current_row, SCREEN_ROWS);
730 sysadm 1.26 break;
731 sysadm 1.116 case KEY_SPACE:
732 sysadm 1.26 case KEY_PGDN:
733 sysadm 1.95 if (line_current + screen_row_total - (output_current_row - screen_begin_row) >= display_line_total) // Reach end
734 sysadm 1.26 {
735 sysadm 1.21 break;
736     }
737 sysadm 1.95 line_current += (screen_row_total - 1) - (output_current_row - screen_begin_row);
738 sysadm 1.91 if (line_current + screen_row_total > display_line_total) // No enough lines to display
739 sysadm 1.26 {
740 sysadm 1.91 line_current = display_line_total - screen_row_total;
741 sysadm 1.26 }
742 sysadm 1.95 output_current_row = screen_begin_row;
743     output_end_row = SCREEN_ROWS - 1;
744     clrline(output_current_row, SCREEN_ROWS);
745 sysadm 1.26 break;
746 sysadm 1.74 case KEY_ESC:
747 sysadm 1.26 case KEY_LEFT:
748 sysadm 1.27 loop = 0;
749 sysadm 1.26 break;
750     case 'h':
751 sysadm 1.81 if (!show_help) // Not reentrant
752 sysadm 1.37 {
753     break;
754     }
755 sysadm 1.26 // Display help information
756 sysadm 1.37 show_help = 0;
757 sysadm 1.89 display_file(help_filename, 1);
758 sysadm 1.37 show_help = 1;
759 sysadm 1.81 case KEY_F5:
760 sysadm 1.26 // Refresh after display help information
761 sysadm 1.95 line_current -= (output_current_row - screen_begin_row);
762     output_current_row = screen_begin_row;
763     output_end_row = SCREEN_ROWS - 1;
764     clrline(output_current_row, SCREEN_ROWS);
765 sysadm 1.89 break;
766 sysadm 1.81 case 0: // Refresh bottom line
767     break;
768 sysadm 1.26 default:
769     input_ok = 0;
770     break;
771 sysadm 1.21 }
772 sysadm 1.6 }
773 sysadm 1.21
774 sysadm 1.26 continue;
775     }
776 sysadm 1.21
777 sysadm 1.55 len = p_line_offsets[line_current + 1] - p_line_offsets[line_current];
778 sysadm 1.89 if (len >= sizeof(buffer))
779 sysadm 1.26 {
780 sysadm 1.87 log_error("Buffer overflow: len=%ld(%ld - %ld) line=%ld \n",
781 sysadm 1.62 len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
782 sysadm 1.89 len = sizeof(buffer) - 1;
783 sysadm 1.26 }
784 sysadm 1.87 else if (len < 0)
785     {
786     log_error("Incorrect line offsets: len=%ld(%ld - %ld) line=%ld \n",
787     len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
788     len = 0;
789     }
790 sysadm 1.52
791 sysadm 1.55 memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len);
792 sysadm 1.52 buffer[len] = '\0';
793    
794 sysadm 1.95 moveto(output_current_row, 0);
795 sysadm 1.26 clrtoeol();
796     prints("%s", buffer);
797 sysadm 1.54 line_current++;
798 sysadm 1.95 output_current_row++;
799 sysadm 1.26 }
800 sysadm 1.6
801 sysadm 1.41 cleanup:
802 sysadm 1.78 return ch;
803     }
804    
805 sysadm 1.126 int display_file_key_handler(int *p_key, DISPLAY_CTX *p_ctx)
806 sysadm 1.81 {
807 sysadm 1.85 switch (*p_key)
808 sysadm 1.81 {
809     case 0: // Set msg
810 sysadm 1.85 snprintf(p_ctx->msg, sizeof(p_ctx->msg),
811 sysadm 1.104 "| 返回[\033[32m←\033[33m,\033[32mESC\033[33m] | "
812     "移动[\033[32m↑\033[33m/\033[32m↓\033[33m/\033[32mPgUp\033[33m/\033[32mPgDn\033[33m] | "
813     "帮助[\033[32mh\033[33m] |");
814 sysadm 1.81 break;
815     }
816    
817     return 0;
818     }
819    
820 sysadm 1.89 int display_file(const char *filename, int eof_exit)
821 sysadm 1.78 {
822 sysadm 1.81 int ret;
823 sysadm 1.78 const void *p_shm;
824     size_t data_len;
825     long line_total;
826     const void *p_data;
827     const long *p_line_offsets;
828    
829     if ((p_shm = get_file_shm_readonly(filename, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL)
830     {
831     log_error("get_file_shm(%s) error\n", filename);
832     return KEY_NULL;
833     }
834    
835 sysadm 1.101 if (user_online_update("VIEW_FILE") < 0)
836     {
837     log_error("user_online_update(VIEW_FILE) error\n");
838     }
839    
840 sysadm 1.89 ret = display_data(p_data, line_total, p_line_offsets, eof_exit, display_file_key_handler, DATA_READ_HELP);
841 sysadm 1.78
842 sysadm 1.69 if (detach_file_shm(p_shm) < 0)
843     {
844     log_error("detach_file_shm(%s) error\n", filename);
845     }
846    
847 sysadm 1.81 return ret;
848 sysadm 1.1 }
849 sysadm 1.9
850 sysadm 1.73 int show_top(const char *str_left, const char *str_middle, const char *str_right)
851 sysadm 1.9 {
852 sysadm 1.71 char str_left_f[STR_TOP_LEFT_MAX_LEN + 1];
853     char str_middle_f[STR_TOP_MIDDLE_MAX_LEN + 1];
854     char str_right_f[STR_TOP_RIGHT_MAX_LEN + 1];
855 sysadm 1.70 int str_left_len;
856 sysadm 1.71 int str_middle_len;
857 sysadm 1.70 int str_right_len;
858 sysadm 1.71 int eol;
859 sysadm 1.51 int len;
860 sysadm 1.40
861 sysadm 1.71 strncpy(str_left_f, str_left, sizeof(str_left_f) - 1);
862     str_left_f[sizeof(str_left_f) - 1] = '\0';
863 sysadm 1.105 len = split_line(str_left_f, STR_TOP_LEFT_MAX_LEN / 2, &eol, &str_left_len, 1);
864 sysadm 1.71 str_left_f[len] = '\0';
865    
866     strncpy(str_middle_f, str_middle, sizeof(str_middle_f) - 1);
867     str_middle_f[sizeof(str_middle_f) - 1] = '\0';
868 sysadm 1.105 len = split_line(str_middle, STR_TOP_MIDDLE_MAX_LEN / 2, &eol, &str_middle_len, 1);
869 sysadm 1.71 str_middle_f[len] = '\0';
870    
871 sysadm 1.73 strncpy(str_right_f, str_right, sizeof(str_right_f) - 1);
872 sysadm 1.71 str_right_f[sizeof(str_right_f) - 1] = '\0';
873 sysadm 1.105 len = split_line(str_right, STR_TOP_RIGHT_MAX_LEN / 2, &eol, &str_right_len, 1);
874 sysadm 1.71 str_right_f[len] = '\0';
875 sysadm 1.9
876 sysadm 1.21 moveto(1, 0);
877 sysadm 1.26 clrtoeol();
878 sysadm 1.105 prints("\033[1;44;33m%s\033[37m%*s%s\033[33m%*s%s\033[m",
879     str_left_f, 44 - str_left_len - str_middle_len, "",
880     str_middle_f, 36 - str_right_len, "", str_right_f);
881 sysadm 1.9
882 sysadm 1.21 return 0;
883 sysadm 1.9 }
884    
885 sysadm 1.57 int show_bottom(const char *msg)
886 sysadm 1.9 {
887 sysadm 1.26 char str_time[LINE_BUFFER_LEN];
888 sysadm 1.119 int len_str_time;
889 sysadm 1.21 time_t time_online;
890     struct tm *tm_online;
891 sysadm 1.77 char msg_f[LINE_BUFFER_LEN];
892 sysadm 1.72 int eol;
893 sysadm 1.119 int len_msg;
894 sysadm 1.58 int len;
895     int len_username;
896 sysadm 1.88 char str_tm_online[LINE_BUFFER_LEN];
897 sysadm 1.125 int len_str_tm_online;
898 sysadm 1.9
899 sysadm 1.119 len_str_time = (int)get_time_str(str_time, sizeof(str_time));
900 sysadm 1.9
901 sysadm 1.76 msg_f[0] = '\0';
902 sysadm 1.119 len_msg = 0;
903 sysadm 1.77 if (msg != NULL)
904 sysadm 1.76 {
905 sysadm 1.77 strncpy(msg_f, msg, sizeof(msg_f) - 1);
906 sysadm 1.76 msg_f[sizeof(msg_f) - 1] = '\0';
907 sysadm 1.119 len = split_line(msg_f, 23, &eol, &len_msg, 1);
908 sysadm 1.77 msg_f[len] = '\0';
909 sysadm 1.76 }
910 sysadm 1.58
911     len_username = (int)strnlen(BBS_username, sizeof(BBS_username));
912    
913 sysadm 1.99 time_online = time(NULL) - BBS_login_tm;
914 sysadm 1.21 tm_online = gmtime(&time_online);
915 sysadm 1.118 if (tm_online->tm_mday > 1)
916 sysadm 1.88 {
917     snprintf(str_tm_online, sizeof(str_tm_online),
918 sysadm 1.119 "\033[36m%d\033[33md \033[36m%d\033[33m:\033[36m%.2d",
919     tm_online->tm_mday - 1, tm_online->tm_hour, tm_online->tm_min);
920 sysadm 1.88 }
921     else
922     {
923     snprintf(str_tm_online, sizeof(str_tm_online),
924 sysadm 1.119 "\033[36m%d\033[33m:\033[36m%.2d",
925 sysadm 1.89 tm_online->tm_hour, tm_online->tm_min);
926 sysadm 1.88 }
927 sysadm 1.125 len_str_tm_online = str_length(str_tm_online, 1);
928 sysadm 1.9
929 sysadm 1.53 moveto(SCREEN_ROWS, 0);
930 sysadm 1.26 clrtoeol();
931 sysadm 1.119 prints("\033[1;44;33m时间[\033[36m%s\033[33m]%s%*s \033[33m用户[\033[36m%s\033[33m][%s\033[33m]\033[m",
932 sysadm 1.125 str_time, msg_f, 65 - len_str_time - len_msg - len_username - len_str_tm_online, "", BBS_username, str_tm_online);
933 sysadm 1.9
934 sysadm 1.21 return 0;
935 sysadm 1.9 }
936    
937 sysadm 1.21 int show_active_board()
938 sysadm 1.9 {
939 sysadm 1.59 static int line_current = 0;
940 sysadm 1.61 static const void *p_shm = NULL;
941 sysadm 1.59 static size_t data_len;
942     static long line_total;
943 sysadm 1.61 static const void *p_data;
944 sysadm 1.59 static const long *p_line_offsets;
945    
946 sysadm 1.65 static time_t t_last_show = 0;
947     static int line_last = 0;
948    
949 sysadm 1.26 char buffer[LINE_BUFFER_LEN];
950 sysadm 1.59 long int len;
951 sysadm 1.9
952 sysadm 1.61 if (p_shm == NULL)
953 sysadm 1.26 {
954 sysadm 1.69 if ((p_shm = get_file_shm_readonly(DATA_ACTIVE_BOARD, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL)
955 sysadm 1.9 {
956 sysadm 1.59 log_error("get_file_shm(%s) error\n", DATA_ACTIVE_BOARD);
957     return KEY_NULL;
958 sysadm 1.9 }
959 sysadm 1.26 }
960 sysadm 1.21
961 sysadm 1.99 if (time(NULL) - t_last_show >= 10)
962 sysadm 1.65 {
963     line_last = line_current;
964 sysadm 1.99 t_last_show = time(NULL);
965 sysadm 1.65 }
966     else
967     {
968     line_current = line_last;
969     }
970    
971 sysadm 1.64 clrline(2, 2 + ACTIVE_BOARD_HEIGHT);
972 sysadm 1.59
973 sysadm 1.26 for (int i = 0; i < ACTIVE_BOARD_HEIGHT; i++)
974     {
975 sysadm 1.59 len = p_line_offsets[line_current + 1] - p_line_offsets[line_current];
976     if (len >= LINE_BUFFER_LEN)
977 sysadm 1.9 {
978 sysadm 1.62 log_error("buffer overflow: len=%ld(%ld - %ld) line=%ld \n",
979     len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
980 sysadm 1.59 len = LINE_BUFFER_LEN - 1;
981 sysadm 1.9 }
982 sysadm 1.59
983     memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len);
984     buffer[len] = '\0';
985    
986 sysadm 1.26 moveto(3 + i, 0);
987     prints("%s", buffer);
988 sysadm 1.59
989     line_current++;
990 sysadm 1.60 if (line_current >= line_total)
991 sysadm 1.59 {
992     line_current = 0;
993     break;
994     }
995 sysadm 1.9 }
996 sysadm 1.26
997 sysadm 1.21 return 0;
998 sysadm 1.9 }
webmaster@leafok.com
 ViewVC Help
Powered by ViewVC 1.3.0-beta1