/[LeafOK_CVS]/lbbs/src/screen.c
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Annotation of /lbbs/src/screen.c

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Revision 1.113 - (hide annotations)
Fri Oct 17 11:23:30 2025 UTC (5 months ago) by sysadm
Branch: MAIN
Changes since 1.112: +7 -2 lines
Content type: text/x-csrc 
Add press_any_key_ex() to support customizable prompt message
1 sysadm 1.1 /***************************************************************************
2 sysadm 1.21 screen.c - description
3     -------------------
4 sysadm 1.36 Copyright : (C) 2004-2025 by Leaflet
5     Email : leaflet@leafok.com
6 sysadm 1.1 ***************************************************************************/
7    
8     /***************************************************************************
9     * *
10     * This program is free software; you can redistribute it and/or modify *
11     * it under the terms of the GNU General Public License as published by *
12 sysadm 1.36 * the Free Software Foundation; either version 3 of the License, or *
13 sysadm 1.1 * (at your option) any later version. *
14     * *
15     ***************************************************************************/
16    
17 sysadm 1.9 #include "bbs.h"
18 sysadm 1.6 #include "common.h"
19 sysadm 1.89 #include "editor.h"
20 sysadm 1.54 #include "file_loader.h"
21 sysadm 1.102 #include "io.h"
22     #include "log.h"
23 sysadm 1.101 #include "login.h"
24 sysadm 1.102 #include "screen.h"
25     #include "str_process.h"
26     #include <ctype.h>
27     #include <errno.h>
28 sysadm 1.52 #include <fcntl.h>
29 sysadm 1.98 #include <string.h>
30 sysadm 1.102 #include <stdlib.h>
31 sysadm 1.41 #include <unistd.h>
32 sysadm 1.102 #include <sys/param.h>
33 sysadm 1.6 #include <sys/stat.h>
34 sysadm 1.55 #include <sys/shm.h>
35 sysadm 1.102 #include <sys/types.h>
36 sysadm 1.1
37 sysadm 1.21 #define ACTIVE_BOARD_HEIGHT 8
38 sysadm 1.9
39 sysadm 1.105 #define STR_TOP_LEFT_MAX_LEN 80
40     #define STR_TOP_MIDDLE_MAX_LEN 40
41 sysadm 1.109 #define STR_TOP_RIGHT_MAX_LEN 80
42 sysadm 1.70
43 sysadm 1.107 static const char *get_time_str(char *s, size_t len)
44     {
45     static const char *weekday[] = {
46     "天", "一", "二", "三", "四", "五", "六"};
47     time_t curtime;
48     struct tm local_tm;
49    
50     time(&curtime);
51     localtime_r(&curtime, &local_tm);
52     size_t j = strftime(s, len, "%b %d %H:%M 星期", &local_tm);
53    
54     if (j == 0 || j + strlen(weekday[local_tm.tm_wday]) + 1 > len)
55     {
56     return NULL;
57     }
58    
59     strncat(s, weekday[local_tm.tm_wday], len - 1 - j);
60    
61     return s;
62     }
63    
64 sysadm 1.21 void moveto(int row, int col)
65 sysadm 1.1 {
66 sysadm 1.21 if (row >= 0)
67     {
68     prints("\033[%d;%dH", row, col);
69     }
70     else
71     {
72     prints("\r");
73     }
74 sysadm 1.1 }
75    
76 sysadm 1.21 void clrtoeol()
77 sysadm 1.1 {
78 sysadm 1.63 prints(CTRL_SEQ_CLR_LINE);
79 sysadm 1.2 }
80    
81 sysadm 1.21 void clrline(int line_begin, int line_end)
82 sysadm 1.5 {
83 sysadm 1.21 int i;
84 sysadm 1.6
85 sysadm 1.21 for (i = line_begin; i <= line_end; i++)
86     {
87     moveto(i, 0);
88 sysadm 1.63 prints(CTRL_SEQ_CLR_LINE);
89 sysadm 1.21 }
90 sysadm 1.5 }
91    
92 sysadm 1.21 void clrtobot(int line_begin)
93 sysadm 1.16 {
94 sysadm 1.21 moveto(line_begin, 0);
95 sysadm 1.25 prints("\033[J");
96     moveto(line_begin, 0);
97 sysadm 1.16 }
98    
99 sysadm 1.21 void clearscr()
100 sysadm 1.2 {
101 sysadm 1.23 prints("\033[2J");
102 sysadm 1.21 moveto(0, 0);
103 sysadm 1.6 }
104    
105 sysadm 1.113 inline int press_any_key()
106     {
107     return press_any_key_ex(" \033[1;33m按任意键继续...\033[m");
108     }
109    
110     int press_any_key_ex(const char *msg)
111 sysadm 1.6 {
112 sysadm 1.112 int ch = 0;
113     int wait_seconds = 60;
114     int duration = 0;
115     time_t t_begin = time(NULL);
116    
117 sysadm 1.53 moveto(SCREEN_ROWS, 0);
118 sysadm 1.21 clrtoeol();
119 sysadm 1.6
120 sysadm 1.113 prints(msg);
121 sysadm 1.21 iflush();
122 sysadm 1.6
123 sysadm 1.112 do
124     {
125     ch = igetch_t(wait_seconds - duration);
126     duration = (int)(time(NULL) - t_begin);
127     } while (!SYS_server_exit && ch == 0 && duration < 60);
128    
129     return ch;
130 sysadm 1.1 }
131    
132 sysadm 1.21 void set_input_echo(int echo)
133 sysadm 1.7 {
134 sysadm 1.21 if (echo)
135     {
136     outc('\x83'); // ASCII code 131
137     }
138     else
139     {
140 sysadm 1.111 // outc ('\x85'); // ASCII code 133
141 sysadm 1.21 prints("\xff\xfb\x01\xff\xfb\x03");
142     }
143 sysadm 1.111 iflush();
144 sysadm 1.7 }
145    
146 sysadm 1.104 static int _str_input(char *buffer, int buf_size, int max_display_len, int echo_mode)
147 sysadm 1.1 {
148 sysadm 1.104 int ch;
149 sysadm 1.38 int offset = 0;
150 sysadm 1.104 int eol;
151     int display_len;
152     char input_str[4];
153     int str_len = 0;
154     char c;
155 sysadm 1.1
156 sysadm 1.38 buffer[buf_size - 1] = '\0';
157 sysadm 1.104 offset = split_line(buffer, max_display_len, &eol, &display_len, 0);
158 sysadm 1.21
159 sysadm 1.47 igetch_reset();
160    
161 sysadm 1.48 while (!SYS_server_exit)
162 sysadm 1.1 {
163 sysadm 1.104 ch = igetch_t(MIN(MAX_DELAY_TIME, 60));
164 sysadm 1.48
165 sysadm 1.104 if (ch == CR)
166 sysadm 1.22 {
167 sysadm 1.21 break;
168 sysadm 1.22 }
169 sysadm 1.104 else if (ch == KEY_TIMEOUT || ch == KEY_NULL) // timeout or broken pipe
170 sysadm 1.41 {
171     return -1;
172     }
173 sysadm 1.104 else if (ch == LF || ch == '\0')
174 sysadm 1.22 {
175 sysadm 1.21 continue;
176 sysadm 1.22 }
177 sysadm 1.104 else if (ch == BACKSPACE)
178 sysadm 1.21 {
179     if (offset > 0)
180     {
181 sysadm 1.31 offset--;
182 sysadm 1.104 if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
183 sysadm 1.31 {
184 sysadm 1.104 while (offset > 0 && (buffer[offset] & 0b11000000) != 0b11000000)
185 sysadm 1.31 {
186 sysadm 1.104 offset--;
187 sysadm 1.31 }
188 sysadm 1.104 display_len--;
189     prints("\033[D \033[D");
190 sysadm 1.31 }
191     buffer[offset] = '\0';
192 sysadm 1.104 display_len--;
193 sysadm 1.31 prints("\033[D \033[D");
194 sysadm 1.21 iflush();
195     }
196     continue;
197     }
198 sysadm 1.104 else if (ch > 255 || iscntrl(ch))
199 sysadm 1.21 {
200     continue;
201     }
202 sysadm 1.104 else if ((ch & 0xff80) == 0x80) // head of multi-byte character
203 sysadm 1.21 {
204 sysadm 1.104 str_len = 0;
205     c = (char)(ch & 0b11110000);
206     while (c & 0b10000000)
207     {
208     input_str[str_len] = (char)(ch - 256);
209     str_len++;
210     c = (c & 0b01111111) << 1;
211    
212     if ((c & 0b10000000) == 0) // Input completed
213     {
214     break;
215     }
216    
217     // Expect additional bytes of input
218     ch = igetch(100); // 0.1 second
219     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
220     {
221 sysadm 1.106 #ifdef _DEBUG
222 sysadm 1.104 log_error("Ignore %d bytes of incomplete UTF8 character\n", str_len);
223 sysadm 1.106 #endif
224 sysadm 1.104 str_len = 0;
225     break;
226     }
227     }
228    
229     if (str_len == 0) // Incomplete input
230     {
231     continue;
232     }
233    
234     if (offset + str_len > buf_size - 1 || display_len + 2 > max_display_len) // No enough space for Chinese character
235 sysadm 1.31 {
236     outc('\a');
237     iflush();
238     continue;
239     }
240 sysadm 1.104
241     memcpy(buffer + offset, input_str, (size_t)str_len);
242     offset += str_len;
243     buffer[offset] = '\0';
244     display_len += 2;
245    
246     switch (echo_mode)
247     {
248     case DOECHO:
249     prints(input_str);
250     break;
251     case NOECHO:
252     prints("**");
253     break;
254     }
255 sysadm 1.21 }
256 sysadm 1.104 else if (ch >= 32 && ch < 127) // Printable character
257 sysadm 1.21 {
258 sysadm 1.104 if (offset + 1 > buf_size - 1 || display_len + 1 > max_display_len)
259     {
260     outc('\a');
261     iflush();
262     continue;
263     }
264 sysadm 1.43
265 sysadm 1.104 buffer[offset++] = (char)ch;
266     buffer[offset] = '\0';
267     display_len++;
268 sysadm 1.43
269 sysadm 1.104 switch (echo_mode)
270     {
271     case DOECHO:
272     outc((char)ch);
273     break;
274     case NOECHO:
275     outc('*');
276     break;
277     }
278 sysadm 1.21 }
279 sysadm 1.104 else // Invalid character
280 sysadm 1.21 {
281 sysadm 1.104 continue;
282 sysadm 1.21 }
283 sysadm 1.104
284     iflush();
285 sysadm 1.6 }
286 sysadm 1.1
287 sysadm 1.21 return offset;
288 sysadm 1.1 }
289    
290 sysadm 1.38 int str_input(char *buffer, int buf_size, int echo_mode)
291 sysadm 1.18 {
292 sysadm 1.32 int len;
293    
294     buffer[0] = '\0';
295 sysadm 1.21
296 sysadm 1.104 len = _str_input(buffer, buf_size, buf_size, echo_mode);
297 sysadm 1.21
298 sysadm 1.32 prints("\r\n");
299     iflush();
300 sysadm 1.21
301 sysadm 1.32 return len;
302 sysadm 1.18 };
303    
304 sysadm 1.108 int get_data(int row, int col, char *prompt, char *buffer, int buf_size, int max_display_len)
305 sysadm 1.15 {
306 sysadm 1.108 int len = 0;
307     int col_cur = 0;
308     int ch;
309     int offset = 0;
310     int eol;
311     int display_len;
312     char input_str[4];
313     int str_len = 0;
314     char c;
315    
316     buffer[buf_size - 1] = '\0';
317     offset = split_line(buffer, max_display_len, &eol, &display_len, 0);
318     buffer[offset] = '\0';
319     len = offset;
320     col_cur = col + str_length(prompt, 1) + display_len;
321 sysadm 1.15
322 sysadm 1.21 moveto(row, col);
323 sysadm 1.80 prints("%s", prompt);
324     prints("%s", buffer);
325 sysadm 1.108 prints("%*s", max_display_len - display_len, "");
326     moveto(row, col_cur);
327 sysadm 1.21 iflush();
328 sysadm 1.15
329 sysadm 1.108 igetch_reset();
330    
331     while (!SYS_server_exit)
332     {
333     ch = igetch_t(MIN(MAX_DELAY_TIME, 60));
334    
335     if (ch == CR)
336     {
337     break;
338     }
339     else if (ch == KEY_TIMEOUT || ch == KEY_NULL) // timeout or broken pipe
340     {
341     return -1;
342     }
343     else if (ch == LF || ch == '\0')
344     {
345     continue;
346     }
347     else if (ch == BACKSPACE)
348     {
349     if (offset > 0)
350     {
351     str_len = 1;
352     offset--;
353     if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
354     {
355     while (offset > 0 && (buffer[offset] & 0b11000000) != 0b11000000)
356     {
357     str_len++;
358     offset--;
359     }
360     display_len--;
361     col_cur--;
362     }
363    
364     memmove(buffer + offset, buffer + offset + str_len, (size_t)(len - offset - str_len));
365     len -= str_len;
366     buffer[len] = '\0';
367     display_len--;
368     col_cur--;
369    
370     moveto(row, col_cur);
371     prints("%s", buffer + offset);
372     prints("%*s", max_display_len - display_len, "");
373     moveto(row, col_cur);
374     iflush();
375     }
376     continue;
377     }
378     else if (ch == KEY_DEL)
379     {
380     if (offset < len)
381     {
382     if ((buffer[offset] & 0x80) == 0x80) // head of multi-byte character
383     {
384     str_len = 0;
385     c = (char)(buffer[offset] & 0b11110000);
386     while (c & 0b10000000)
387     {
388     str_len++;
389     c = (c & 0b01111111) << 1;
390     }
391     display_len--;
392     }
393     else
394     {
395     str_len = 1;
396     }
397    
398     memmove(buffer + offset, buffer + offset + str_len, (size_t)(len - offset - str_len));
399     len -= str_len;
400     buffer[len] = '\0';
401     display_len--;
402    
403     moveto(row, col_cur);
404     prints("%s", buffer + offset);
405     prints("%*s", max_display_len - display_len, "");
406     moveto(row, col_cur);
407     iflush();
408     }
409     continue;
410     }
411     else if (ch == KEY_LEFT)
412     {
413     if (offset > 0)
414     {
415     str_len = 1;
416     offset--;
417     if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
418     {
419     while (offset > 0 && (buffer[offset] & 0b11000000) != 0b11000000)
420     {
421     str_len++;
422     offset--;
423     }
424     col_cur--;
425     }
426     col_cur--;
427    
428     moveto(row, col_cur);
429     iflush();
430     }
431     continue;
432     }
433     else if (ch == KEY_RIGHT)
434     {
435     if (offset < len)
436     {
437     str_len = 0;
438     if ((buffer[offset] & 0x80) == 0x80) // head of multi-byte character
439     {
440     c = (char)(buffer[offset] & 0b11110000);
441     while (c & 0b10000000)
442     {
443     str_len++;
444     c = (c & 0b01111111) << 1;
445     }
446     col_cur++;
447     }
448     else
449     {
450     str_len = 1;
451     }
452    
453     col_cur++;
454     offset += str_len;
455    
456     moveto(row, col_cur);
457     iflush();
458     }
459     continue;
460     }
461     else if (ch == KEY_HOME || ch == KEY_UP)
462     {
463     if (offset > 0)
464     {
465     offset = 0;
466     col_cur = col + str_length(prompt, 1);
467    
468     moveto(row, col_cur);
469     iflush();
470     }
471     continue;
472     }
473     else if (ch == KEY_END || ch == KEY_DOWN)
474     {
475     if (offset < len)
476     {
477     offset = len;
478     col_cur = col + str_length(prompt, 1) + display_len;
479    
480     moveto(row, col_cur);
481     iflush();
482     }
483     continue;
484     }
485     else if (ch > 255 || iscntrl(ch))
486     {
487     continue;
488     }
489     else if ((ch & 0xff80) == 0x80) // head of multi-byte character
490     {
491     str_len = 0;
492     c = (char)(ch & 0b11110000);
493     while (c & 0b10000000)
494     {
495     input_str[str_len] = (char)(ch - 256);
496     str_len++;
497     c = (c & 0b01111111) << 1;
498    
499     if ((c & 0b10000000) == 0) // Input completed
500     {
501     break;
502     }
503    
504     // Expect additional bytes of input
505     ch = igetch(100); // 0.1 second
506     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
507     {
508     #ifdef _DEBUG
509     log_error("Ignore %d bytes of incomplete UTF8 character\n", str_len);
510     #endif
511     str_len = 0;
512     break;
513     }
514     }
515    
516     if (str_len == 0) // Incomplete input
517     {
518     continue;
519     }
520    
521     if (len + str_len > buf_size - 1 || display_len + 2 > max_display_len) // No enough space for Chinese character
522     {
523     outc('\a');
524     iflush();
525     continue;
526     }
527    
528     memmove(buffer + offset + str_len, buffer + offset, (size_t)(len - offset));
529     memcpy(buffer + offset, input_str, (size_t)str_len);
530     len += str_len;
531     buffer[len] = '\0';
532     display_len += 2;
533    
534     moveto(row, col_cur);
535     prints("%s", buffer + offset);
536     prints("%*s", max_display_len - display_len, "");
537    
538     col_cur += 2;
539    
540     moveto(row, col_cur);
541     iflush();
542    
543     offset += str_len;
544     }
545     else if (ch >= 32 && ch < 127) // Printable character
546     {
547     if (len + 1 > buf_size - 1 || display_len + 1 > max_display_len)
548     {
549     outc('\a');
550     iflush();
551     continue;
552     }
553    
554     memmove(buffer + offset + 1, buffer + offset, (size_t)(len - offset));
555     buffer[offset] = (char)ch;
556     len++;
557     buffer[len] = '\0';
558     display_len++;
559    
560     moveto(row, col_cur);
561     prints("%s", buffer + offset);
562     prints("%*s", max_display_len - display_len, "");
563    
564     col_cur++;
565    
566     moveto(row, col_cur);
567     iflush();
568    
569     offset++;
570     }
571     else // Invalid character
572     {
573     continue;
574     }
575     }
576 sysadm 1.21
577     return len;
578 sysadm 1.15 }
579    
580 sysadm 1.89 int display_data(const void *p_data, long display_line_total, const long *p_line_offsets, int eof_exit,
581 sysadm 1.81 display_data_key_handler key_handler, const char *help_filename)
582 sysadm 1.1 {
583 sysadm 1.37 static int show_help = 1;
584 sysadm 1.26 char buffer[LINE_BUFFER_LEN];
585 sysadm 1.85 DISPLAY_CTX ctx;
586 sysadm 1.81 int ch = 0;
587 sysadm 1.91 int input_ok;
588     const int screen_begin_row = 1;
589 sysadm 1.95 const int screen_row_total = SCREEN_ROWS - screen_begin_row;
590     int output_current_row = screen_begin_row;
591     int output_end_row = SCREEN_ROWS - 1;
592 sysadm 1.54 long int line_current = 0;
593 sysadm 1.34 long int len;
594     long int percentile;
595 sysadm 1.54 int loop;
596 sysadm 1.78 int eol, display_len;
597 sysadm 1.52
598 sysadm 1.95 clrline(output_current_row, SCREEN_ROWS);
599 sysadm 1.6
600 sysadm 1.81 // update msg_ext with extended key handler
601 sysadm 1.85 if (key_handler(&ch, &ctx) != 0)
602 sysadm 1.81 {
603     return ch;
604     }
605    
606 sysadm 1.54 loop = 1;
607 sysadm 1.44 while (!SYS_server_exit && loop)
608 sysadm 1.6 {
609 sysadm 1.91 if (eof_exit > 0 && line_current >= display_line_total && display_line_total <= screen_row_total)
610 sysadm 1.27 {
611 sysadm 1.82 if (eof_exit == 1)
612 sysadm 1.27 {
613     ch = press_any_key();
614     }
615 sysadm 1.82 else // if (eof_exit == 2)
616 sysadm 1.27 {
617     iflush();
618     }
619    
620     loop = 0;
621     break;
622     }
623    
624 sysadm 1.95 if (line_current >= display_line_total || output_current_row > output_end_row)
625 sysadm 1.21 {
626 sysadm 1.95 ctx.reach_begin = (line_current < output_current_row ? 1 : 0);
627 sysadm 1.85
628 sysadm 1.95 if (line_current - (output_current_row - screen_begin_row) + screen_row_total < display_line_total)
629 sysadm 1.27 {
630 sysadm 1.95 percentile = (line_current - (output_current_row - screen_begin_row) + screen_row_total) * 100 / display_line_total;
631 sysadm 1.85 ctx.reach_end = 0;
632 sysadm 1.27 }
633     else
634     {
635     percentile = 100;
636 sysadm 1.85 ctx.reach_end = 1;
637 sysadm 1.27 }
638 sysadm 1.6
639 sysadm 1.95 ctx.line_top = line_current - (output_current_row - screen_begin_row) + 1;
640     ctx.line_bottom = MIN(line_current - (output_current_row - screen_begin_row) + screen_row_total, display_line_total);
641 sysadm 1.85
642 sysadm 1.78 snprintf(buffer, sizeof(buffer),
643 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",
644 sysadm 1.85 ctx.line_top,
645     ctx.line_bottom,
646     percentile,
647     ctx.msg);
648 sysadm 1.78
649 sysadm 1.97 len = split_line(buffer, SCREEN_COLS, &eol, &display_len, 1);
650 sysadm 1.81 for (; display_len < SCREEN_COLS; display_len++)
651 sysadm 1.78 {
652     buffer[len++] = ' ';
653     }
654     buffer[len] = '\0';
655     strncat(buffer, "\033[m", sizeof(buffer) - 1 - strnlen(buffer, sizeof(buffer)));
656    
657 sysadm 1.53 moveto(SCREEN_ROWS, 0);
658 sysadm 1.80 prints("%s", buffer);
659 sysadm 1.26 iflush();
660 sysadm 1.6
661 sysadm 1.26 input_ok = 0;
662 sysadm 1.44 while (!SYS_server_exit && !input_ok)
663 sysadm 1.21 {
664 sysadm 1.94 ch = igetch_t(MAX_DELAY_TIME);
665     input_ok = 1;
666    
667 sysadm 1.110 if (ch != KEY_NULL && ch != KEY_TIMEOUT)
668     {
669     BBS_last_access_tm = time(NULL);
670     }
671    
672 sysadm 1.81 // extended key handler
673 sysadm 1.85 if (key_handler(&ch, &ctx) != 0)
674 sysadm 1.81 {
675     goto cleanup;
676     }
677    
678 sysadm 1.26 switch (ch)
679 sysadm 1.21 {
680 sysadm 1.67 case KEY_NULL:
681 sysadm 1.110 log_error("KEY_NULL\n");
682     goto cleanup;
683 sysadm 1.41 case KEY_TIMEOUT:
684 sysadm 1.110 log_error("User input timeout\n");
685 sysadm 1.41 goto cleanup;
686 sysadm 1.50 case KEY_HOME:
687 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
688 sysadm 1.84 {
689     break;
690     }
691 sysadm 1.54 line_current = 0;
692 sysadm 1.95 output_current_row = screen_begin_row;
693     output_end_row = SCREEN_ROWS - 1;
694     clrline(output_current_row, SCREEN_ROWS);
695 sysadm 1.50 break;
696     case KEY_END:
697 sysadm 1.91 if (display_line_total < screen_row_total)
698 sysadm 1.83 {
699 sysadm 1.84 break;
700 sysadm 1.83 }
701 sysadm 1.91 line_current = display_line_total - screen_row_total;
702 sysadm 1.95 output_current_row = screen_begin_row;
703     output_end_row = SCREEN_ROWS - 1;
704     clrline(output_current_row, SCREEN_ROWS);
705 sysadm 1.50 break;
706 sysadm 1.26 case KEY_UP:
707 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
708 sysadm 1.21 {
709     break;
710 sysadm 1.26 }
711 sysadm 1.95 line_current -= output_current_row;
712     output_current_row = screen_begin_row;
713 sysadm 1.89 // screen_end_line = screen_begin_line;
714 sysadm 1.39 // prints("\033[T"); // Scroll down 1 line
715 sysadm 1.95 output_end_row = SCREEN_ROWS - 1; // Legacy Fterm only works with this line
716 sysadm 1.26 break;
717 sysadm 1.49 case CR:
718 sysadm 1.78 case KEY_SPACE:
719 sysadm 1.26 case KEY_DOWN:
720 sysadm 1.95 if (line_current + (screen_row_total - (output_current_row - screen_begin_row)) >= display_line_total) // Reach end
721 sysadm 1.26 {
722 sysadm 1.21 break;
723 sysadm 1.26 }
724 sysadm 1.95 line_current += (screen_row_total - (output_current_row - screen_begin_row));
725     output_current_row = screen_row_total;
726     output_end_row = SCREEN_ROWS - 1;
727 sysadm 1.53 moveto(SCREEN_ROWS, 0);
728 sysadm 1.26 clrtoeol();
729 sysadm 1.104 // prints("\033[S"); // Scroll up 1 line
730 sysadm 1.103 prints("\n"); // Legacy Cterm only works with this line
731 sysadm 1.26 break;
732     case KEY_PGUP:
733 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
734 sysadm 1.26 {
735 sysadm 1.21 break;
736 sysadm 1.26 }
737 sysadm 1.95 line_current -= ((screen_row_total - 1) + (output_current_row - screen_begin_row));
738 sysadm 1.54 if (line_current < 0)
739 sysadm 1.26 {
740 sysadm 1.54 line_current = 0;
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     case KEY_PGDN:
747 sysadm 1.95 if (line_current + screen_row_total - (output_current_row - screen_begin_row) >= display_line_total) // Reach end
748 sysadm 1.26 {
749 sysadm 1.21 break;
750     }
751 sysadm 1.95 line_current += (screen_row_total - 1) - (output_current_row - screen_begin_row);
752 sysadm 1.91 if (line_current + screen_row_total > display_line_total) // No enough lines to display
753 sysadm 1.26 {
754 sysadm 1.91 line_current = display_line_total - screen_row_total;
755 sysadm 1.26 }
756 sysadm 1.95 output_current_row = screen_begin_row;
757     output_end_row = SCREEN_ROWS - 1;
758     clrline(output_current_row, SCREEN_ROWS);
759 sysadm 1.26 break;
760 sysadm 1.74 case KEY_ESC:
761 sysadm 1.26 case KEY_LEFT:
762 sysadm 1.27 loop = 0;
763 sysadm 1.26 break;
764     case 'h':
765 sysadm 1.81 if (!show_help) // Not reentrant
766 sysadm 1.37 {
767     break;
768     }
769 sysadm 1.26 // Display help information
770 sysadm 1.37 show_help = 0;
771 sysadm 1.89 display_file(help_filename, 1);
772 sysadm 1.37 show_help = 1;
773 sysadm 1.81 case KEY_F5:
774 sysadm 1.26 // Refresh after display help information
775 sysadm 1.95 line_current -= (output_current_row - screen_begin_row);
776     output_current_row = screen_begin_row;
777     output_end_row = SCREEN_ROWS - 1;
778     clrline(output_current_row, SCREEN_ROWS);
779 sysadm 1.89 break;
780 sysadm 1.81 case 0: // Refresh bottom line
781     break;
782 sysadm 1.26 default:
783     input_ok = 0;
784     break;
785 sysadm 1.21 }
786 sysadm 1.6 }
787 sysadm 1.21
788 sysadm 1.26 continue;
789     }
790 sysadm 1.21
791 sysadm 1.55 len = p_line_offsets[line_current + 1] - p_line_offsets[line_current];
792 sysadm 1.89 if (len >= sizeof(buffer))
793 sysadm 1.26 {
794 sysadm 1.87 log_error("Buffer overflow: len=%ld(%ld - %ld) line=%ld \n",
795 sysadm 1.62 len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
796 sysadm 1.89 len = sizeof(buffer) - 1;
797 sysadm 1.26 }
798 sysadm 1.87 else if (len < 0)
799     {
800     log_error("Incorrect line offsets: len=%ld(%ld - %ld) line=%ld \n",
801     len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
802     len = 0;
803     }
804 sysadm 1.52
805 sysadm 1.55 memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len);
806 sysadm 1.52 buffer[len] = '\0';
807    
808 sysadm 1.95 moveto(output_current_row, 0);
809 sysadm 1.26 clrtoeol();
810     prints("%s", buffer);
811 sysadm 1.54 line_current++;
812 sysadm 1.95 output_current_row++;
813 sysadm 1.26 }
814 sysadm 1.6
815 sysadm 1.41 cleanup:
816 sysadm 1.78 return ch;
817     }
818    
819 sysadm 1.85 static int display_file_key_handler(int *p_key, DISPLAY_CTX *p_ctx)
820 sysadm 1.81 {
821 sysadm 1.85 switch (*p_key)
822 sysadm 1.81 {
823     case 0: // Set msg
824 sysadm 1.85 snprintf(p_ctx->msg, sizeof(p_ctx->msg),
825 sysadm 1.104 "| 返回[\033[32m←\033[33m,\033[32mESC\033[33m] | "
826     "移动[\033[32m↑\033[33m/\033[32m↓\033[33m/\033[32mPgUp\033[33m/\033[32mPgDn\033[33m] | "
827     "帮助[\033[32mh\033[33m] |");
828 sysadm 1.81 break;
829     }
830    
831     return 0;
832     }
833    
834 sysadm 1.89 int display_file(const char *filename, int eof_exit)
835 sysadm 1.78 {
836 sysadm 1.81 int ret;
837 sysadm 1.78 const void *p_shm;
838     size_t data_len;
839     long line_total;
840     const void *p_data;
841     const long *p_line_offsets;
842    
843     if ((p_shm = get_file_shm_readonly(filename, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL)
844     {
845     log_error("get_file_shm(%s) error\n", filename);
846     return KEY_NULL;
847     }
848    
849 sysadm 1.101 if (user_online_update("VIEW_FILE") < 0)
850     {
851     log_error("user_online_update(VIEW_FILE) error\n");
852     }
853    
854 sysadm 1.89 ret = display_data(p_data, line_total, p_line_offsets, eof_exit, display_file_key_handler, DATA_READ_HELP);
855 sysadm 1.78
856 sysadm 1.69 if (detach_file_shm(p_shm) < 0)
857     {
858     log_error("detach_file_shm(%s) error\n", filename);
859     }
860    
861 sysadm 1.81 return ret;
862 sysadm 1.1 }
863 sysadm 1.9
864 sysadm 1.73 int show_top(const char *str_left, const char *str_middle, const char *str_right)
865 sysadm 1.9 {
866 sysadm 1.71 char str_left_f[STR_TOP_LEFT_MAX_LEN + 1];
867     char str_middle_f[STR_TOP_MIDDLE_MAX_LEN + 1];
868     char str_right_f[STR_TOP_RIGHT_MAX_LEN + 1];
869 sysadm 1.70 int str_left_len;
870 sysadm 1.71 int str_middle_len;
871 sysadm 1.70 int str_right_len;
872 sysadm 1.71 int eol;
873 sysadm 1.51 int len;
874 sysadm 1.40
875 sysadm 1.71 strncpy(str_left_f, str_left, sizeof(str_left_f) - 1);
876     str_left_f[sizeof(str_left_f) - 1] = '\0';
877 sysadm 1.105 len = split_line(str_left_f, STR_TOP_LEFT_MAX_LEN / 2, &eol, &str_left_len, 1);
878 sysadm 1.71 str_left_f[len] = '\0';
879    
880     strncpy(str_middle_f, str_middle, sizeof(str_middle_f) - 1);
881     str_middle_f[sizeof(str_middle_f) - 1] = '\0';
882 sysadm 1.105 len = split_line(str_middle, STR_TOP_MIDDLE_MAX_LEN / 2, &eol, &str_middle_len, 1);
883 sysadm 1.71 str_middle_f[len] = '\0';
884    
885 sysadm 1.73 strncpy(str_right_f, str_right, sizeof(str_right_f) - 1);
886 sysadm 1.71 str_right_f[sizeof(str_right_f) - 1] = '\0';
887 sysadm 1.105 len = split_line(str_right, STR_TOP_RIGHT_MAX_LEN / 2, &eol, &str_right_len, 1);
888 sysadm 1.71 str_right_f[len] = '\0';
889 sysadm 1.9
890 sysadm 1.21 moveto(1, 0);
891 sysadm 1.26 clrtoeol();
892 sysadm 1.105 prints("\033[1;44;33m%s\033[37m%*s%s\033[33m%*s%s\033[m",
893     str_left_f, 44 - str_left_len - str_middle_len, "",
894     str_middle_f, 36 - str_right_len, "", str_right_f);
895 sysadm 1.9
896 sysadm 1.21 return 0;
897 sysadm 1.9 }
898    
899 sysadm 1.57 int show_bottom(const char *msg)
900 sysadm 1.9 {
901 sysadm 1.26 char str_time[LINE_BUFFER_LEN];
902 sysadm 1.21 time_t time_online;
903     struct tm *tm_online;
904 sysadm 1.77 char msg_f[LINE_BUFFER_LEN];
905 sysadm 1.72 int eol;
906 sysadm 1.58 int msg_len;
907     int len;
908     int len_username;
909 sysadm 1.88 char str_tm_online[LINE_BUFFER_LEN];
910 sysadm 1.9
911 sysadm 1.26 get_time_str(str_time, sizeof(str_time));
912 sysadm 1.9
913 sysadm 1.76 msg_f[0] = '\0';
914     msg_len = 0;
915 sysadm 1.77 if (msg != NULL)
916 sysadm 1.76 {
917 sysadm 1.77 strncpy(msg_f, msg, sizeof(msg_f) - 1);
918 sysadm 1.76 msg_f[sizeof(msg_f) - 1] = '\0';
919 sysadm 1.97 len = split_line(msg_f, 23, &eol, &msg_len, 1);
920 sysadm 1.77 msg_f[len] = '\0';
921 sysadm 1.76 }
922 sysadm 1.58
923     len_username = (int)strnlen(BBS_username, sizeof(BBS_username));
924    
925 sysadm 1.99 time_online = time(NULL) - BBS_login_tm;
926 sysadm 1.21 tm_online = gmtime(&time_online);
927 sysadm 1.88 if (tm_online->tm_mday > 1)
928     {
929     snprintf(str_tm_online, sizeof(str_tm_online),
930 sysadm 1.104 "\033[36m%2d\033[33m天\033[36m%2d\033[33m时",
931 sysadm 1.89 tm_online->tm_mday - 1, tm_online->tm_hour);
932 sysadm 1.88 }
933     else
934     {
935     snprintf(str_tm_online, sizeof(str_tm_online),
936 sysadm 1.104 "\033[36m%2d\033[33m时\033[36m%2d\033[33m分",
937 sysadm 1.89 tm_online->tm_hour, tm_online->tm_min);
938 sysadm 1.88 }
939 sysadm 1.9
940 sysadm 1.53 moveto(SCREEN_ROWS, 0);
941 sysadm 1.26 clrtoeol();
942 sysadm 1.104 prints("\033[1;44;33m时间[\033[36m%s\033[33m]%s%*s \033[33m帐号[\033[36m%s\033[33m][%s\033[33m]\033[m",
943 sysadm 1.88 str_time, msg_f, 38 - msg_len - len_username, "", BBS_username, str_tm_online);
944 sysadm 1.9
945 sysadm 1.21 return 0;
946 sysadm 1.9 }
947    
948 sysadm 1.21 int show_active_board()
949 sysadm 1.9 {
950 sysadm 1.59 static int line_current = 0;
951 sysadm 1.61 static const void *p_shm = NULL;
952 sysadm 1.59 static size_t data_len;
953     static long line_total;
954 sysadm 1.61 static const void *p_data;
955 sysadm 1.59 static const long *p_line_offsets;
956    
957 sysadm 1.65 static time_t t_last_show = 0;
958     static int line_last = 0;
959    
960 sysadm 1.26 char buffer[LINE_BUFFER_LEN];
961 sysadm 1.59 long int len;
962 sysadm 1.9
963 sysadm 1.61 if (p_shm == NULL)
964 sysadm 1.26 {
965 sysadm 1.69 if ((p_shm = get_file_shm_readonly(DATA_ACTIVE_BOARD, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL)
966 sysadm 1.9 {
967 sysadm 1.59 log_error("get_file_shm(%s) error\n", DATA_ACTIVE_BOARD);
968     return KEY_NULL;
969 sysadm 1.9 }
970 sysadm 1.26 }
971 sysadm 1.21
972 sysadm 1.99 if (time(NULL) - t_last_show >= 10)
973 sysadm 1.65 {
974     line_last = line_current;
975 sysadm 1.99 t_last_show = time(NULL);
976 sysadm 1.65 }
977     else
978     {
979     line_current = line_last;
980     }
981    
982 sysadm 1.64 clrline(2, 2 + ACTIVE_BOARD_HEIGHT);
983 sysadm 1.59
984 sysadm 1.26 for (int i = 0; i < ACTIVE_BOARD_HEIGHT; i++)
985     {
986 sysadm 1.59 len = p_line_offsets[line_current + 1] - p_line_offsets[line_current];
987     if (len >= LINE_BUFFER_LEN)
988 sysadm 1.9 {
989 sysadm 1.62 log_error("buffer overflow: len=%ld(%ld - %ld) line=%ld \n",
990     len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
991 sysadm 1.59 len = LINE_BUFFER_LEN - 1;
992 sysadm 1.9 }
993 sysadm 1.59
994     memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len);
995     buffer[len] = '\0';
996    
997 sysadm 1.26 moveto(3 + i, 0);
998     prints("%s", buffer);
999 sysadm 1.59
1000     line_current++;
1001 sysadm 1.60 if (line_current >= line_total)
1002 sysadm 1.59 {
1003     line_current = 0;
1004     break;
1005     }
1006 sysadm 1.9 }
1007 sysadm 1.26
1008 sysadm 1.21 return 0;
1009 sysadm 1.9 }
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