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

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Revision 1.114 - (hide annotations)
Sat Oct 18 05:02:15 2025 UTC (4 months, 4 weeks ago) by sysadm
Branch: MAIN
Changes since 1.113: +5 -4 lines
Content type: text/x-csrc 
Add user preferred charset selection and conversion
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 sysadm 1.114 return press_any_key_ex(" \033[1;33m按任意键继续...\033[m", 60);
108 sysadm 1.113 }
109    
110 sysadm 1.114 int press_any_key_ex(const char *msg, int sec)
111 sysadm 1.6 {
112 sysadm 1.112 int ch = 0;
113     int duration = 0;
114     time_t t_begin = time(NULL);
115    
116 sysadm 1.53 moveto(SCREEN_ROWS, 0);
117 sysadm 1.21 clrtoeol();
118 sysadm 1.6
119 sysadm 1.113 prints(msg);
120 sysadm 1.21 iflush();
121 sysadm 1.6
122 sysadm 1.114 igetch_reset();
123    
124 sysadm 1.112 do
125     {
126 sysadm 1.114 ch = igetch_t(sec - duration);
127 sysadm 1.112 duration = (int)(time(NULL) - t_begin);
128     } while (!SYS_server_exit && ch == 0 && duration < 60);
129    
130     return ch;
131 sysadm 1.1 }
132    
133 sysadm 1.21 void set_input_echo(int echo)
134 sysadm 1.7 {
135 sysadm 1.21 if (echo)
136     {
137     outc('\x83'); // ASCII code 131
138     }
139     else
140     {
141 sysadm 1.111 // outc ('\x85'); // ASCII code 133
142 sysadm 1.21 prints("\xff\xfb\x01\xff\xfb\x03");
143     }
144 sysadm 1.111 iflush();
145 sysadm 1.7 }
146    
147 sysadm 1.104 static int _str_input(char *buffer, int buf_size, int max_display_len, int echo_mode)
148 sysadm 1.1 {
149 sysadm 1.104 int ch;
150 sysadm 1.38 int offset = 0;
151 sysadm 1.104 int eol;
152     int display_len;
153     char input_str[4];
154     int str_len = 0;
155     char c;
156 sysadm 1.1
157 sysadm 1.38 buffer[buf_size - 1] = '\0';
158 sysadm 1.104 offset = split_line(buffer, max_display_len, &eol, &display_len, 0);
159 sysadm 1.21
160 sysadm 1.47 igetch_reset();
161    
162 sysadm 1.48 while (!SYS_server_exit)
163 sysadm 1.1 {
164 sysadm 1.104 ch = igetch_t(MIN(MAX_DELAY_TIME, 60));
165 sysadm 1.48
166 sysadm 1.104 if (ch == CR)
167 sysadm 1.22 {
168 sysadm 1.21 break;
169 sysadm 1.22 }
170 sysadm 1.104 else if (ch == KEY_TIMEOUT || ch == KEY_NULL) // timeout or broken pipe
171 sysadm 1.41 {
172     return -1;
173     }
174 sysadm 1.104 else if (ch == LF || ch == '\0')
175 sysadm 1.22 {
176 sysadm 1.21 continue;
177 sysadm 1.22 }
178 sysadm 1.104 else if (ch == BACKSPACE)
179 sysadm 1.21 {
180     if (offset > 0)
181     {
182 sysadm 1.31 offset--;
183 sysadm 1.104 if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
184 sysadm 1.31 {
185 sysadm 1.104 while (offset > 0 && (buffer[offset] & 0b11000000) != 0b11000000)
186 sysadm 1.31 {
187 sysadm 1.104 offset--;
188 sysadm 1.31 }
189 sysadm 1.104 display_len--;
190     prints("\033[D \033[D");
191 sysadm 1.31 }
192     buffer[offset] = '\0';
193 sysadm 1.104 display_len--;
194 sysadm 1.31 prints("\033[D \033[D");
195 sysadm 1.21 iflush();
196     }
197     continue;
198     }
199 sysadm 1.104 else if (ch > 255 || iscntrl(ch))
200 sysadm 1.21 {
201     continue;
202     }
203 sysadm 1.104 else if ((ch & 0xff80) == 0x80) // head of multi-byte character
204 sysadm 1.21 {
205 sysadm 1.104 str_len = 0;
206     c = (char)(ch & 0b11110000);
207     while (c & 0b10000000)
208     {
209     input_str[str_len] = (char)(ch - 256);
210     str_len++;
211     c = (c & 0b01111111) << 1;
212    
213     if ((c & 0b10000000) == 0) // Input completed
214     {
215     break;
216     }
217    
218     // Expect additional bytes of input
219     ch = igetch(100); // 0.1 second
220     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
221     {
222 sysadm 1.106 #ifdef _DEBUG
223 sysadm 1.104 log_error("Ignore %d bytes of incomplete UTF8 character\n", str_len);
224 sysadm 1.106 #endif
225 sysadm 1.104 str_len = 0;
226     break;
227     }
228     }
229    
230     if (str_len == 0) // Incomplete input
231     {
232     continue;
233     }
234    
235     if (offset + str_len > buf_size - 1 || display_len + 2 > max_display_len) // No enough space for Chinese character
236 sysadm 1.31 {
237     outc('\a');
238     iflush();
239     continue;
240     }
241 sysadm 1.104
242     memcpy(buffer + offset, input_str, (size_t)str_len);
243     offset += str_len;
244     buffer[offset] = '\0';
245     display_len += 2;
246    
247     switch (echo_mode)
248     {
249     case DOECHO:
250     prints(input_str);
251     break;
252     case NOECHO:
253     prints("**");
254     break;
255     }
256 sysadm 1.21 }
257 sysadm 1.104 else if (ch >= 32 && ch < 127) // Printable character
258 sysadm 1.21 {
259 sysadm 1.104 if (offset + 1 > buf_size - 1 || display_len + 1 > max_display_len)
260     {
261     outc('\a');
262     iflush();
263     continue;
264     }
265 sysadm 1.43
266 sysadm 1.104 buffer[offset++] = (char)ch;
267     buffer[offset] = '\0';
268     display_len++;
269 sysadm 1.43
270 sysadm 1.104 switch (echo_mode)
271     {
272     case DOECHO:
273     outc((char)ch);
274     break;
275     case NOECHO:
276     outc('*');
277     break;
278     }
279 sysadm 1.21 }
280 sysadm 1.104 else // Invalid character
281 sysadm 1.21 {
282 sysadm 1.104 continue;
283 sysadm 1.21 }
284 sysadm 1.104
285     iflush();
286 sysadm 1.6 }
287 sysadm 1.1
288 sysadm 1.21 return offset;
289 sysadm 1.1 }
290    
291 sysadm 1.38 int str_input(char *buffer, int buf_size, int echo_mode)
292 sysadm 1.18 {
293 sysadm 1.32 int len;
294    
295     buffer[0] = '\0';
296 sysadm 1.21
297 sysadm 1.104 len = _str_input(buffer, buf_size, buf_size, echo_mode);
298 sysadm 1.21
299 sysadm 1.32 prints("\r\n");
300     iflush();
301 sysadm 1.21
302 sysadm 1.32 return len;
303 sysadm 1.18 };
304    
305 sysadm 1.108 int get_data(int row, int col, char *prompt, char *buffer, int buf_size, int max_display_len)
306 sysadm 1.15 {
307 sysadm 1.108 int len = 0;
308     int col_cur = 0;
309     int ch;
310     int offset = 0;
311     int eol;
312     int display_len;
313     char input_str[4];
314     int str_len = 0;
315     char c;
316    
317     buffer[buf_size - 1] = '\0';
318     offset = split_line(buffer, max_display_len, &eol, &display_len, 0);
319     buffer[offset] = '\0';
320     len = offset;
321     col_cur = col + str_length(prompt, 1) + display_len;
322 sysadm 1.15
323 sysadm 1.21 moveto(row, col);
324 sysadm 1.80 prints("%s", prompt);
325     prints("%s", buffer);
326 sysadm 1.108 prints("%*s", max_display_len - display_len, "");
327     moveto(row, col_cur);
328 sysadm 1.21 iflush();
329 sysadm 1.15
330 sysadm 1.108 igetch_reset();
331    
332     while (!SYS_server_exit)
333     {
334     ch = igetch_t(MIN(MAX_DELAY_TIME, 60));
335    
336     if (ch == CR)
337     {
338     break;
339     }
340     else if (ch == KEY_TIMEOUT || ch == KEY_NULL) // timeout or broken pipe
341     {
342     return -1;
343     }
344     else if (ch == LF || ch == '\0')
345     {
346     continue;
347     }
348     else if (ch == BACKSPACE)
349     {
350     if (offset > 0)
351     {
352     str_len = 1;
353     offset--;
354     if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
355     {
356     while (offset > 0 && (buffer[offset] & 0b11000000) != 0b11000000)
357     {
358     str_len++;
359     offset--;
360     }
361     display_len--;
362     col_cur--;
363     }
364    
365     memmove(buffer + offset, buffer + offset + str_len, (size_t)(len - offset - str_len));
366     len -= str_len;
367     buffer[len] = '\0';
368     display_len--;
369     col_cur--;
370    
371     moveto(row, col_cur);
372     prints("%s", buffer + offset);
373     prints("%*s", max_display_len - display_len, "");
374     moveto(row, col_cur);
375     iflush();
376     }
377     continue;
378     }
379     else if (ch == KEY_DEL)
380     {
381     if (offset < len)
382     {
383     if ((buffer[offset] & 0x80) == 0x80) // head of multi-byte character
384     {
385     str_len = 0;
386     c = (char)(buffer[offset] & 0b11110000);
387     while (c & 0b10000000)
388     {
389     str_len++;
390     c = (c & 0b01111111) << 1;
391     }
392     display_len--;
393     }
394     else
395     {
396     str_len = 1;
397     }
398    
399     memmove(buffer + offset, buffer + offset + str_len, (size_t)(len - offset - str_len));
400     len -= str_len;
401     buffer[len] = '\0';
402     display_len--;
403    
404     moveto(row, col_cur);
405     prints("%s", buffer + offset);
406     prints("%*s", max_display_len - display_len, "");
407     moveto(row, col_cur);
408     iflush();
409     }
410     continue;
411     }
412     else if (ch == KEY_LEFT)
413     {
414     if (offset > 0)
415     {
416     str_len = 1;
417     offset--;
418     if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
419     {
420     while (offset > 0 && (buffer[offset] & 0b11000000) != 0b11000000)
421     {
422     str_len++;
423     offset--;
424     }
425     col_cur--;
426     }
427     col_cur--;
428    
429     moveto(row, col_cur);
430     iflush();
431     }
432     continue;
433     }
434     else if (ch == KEY_RIGHT)
435     {
436     if (offset < len)
437     {
438     str_len = 0;
439     if ((buffer[offset] & 0x80) == 0x80) // head of multi-byte character
440     {
441     c = (char)(buffer[offset] & 0b11110000);
442     while (c & 0b10000000)
443     {
444     str_len++;
445     c = (c & 0b01111111) << 1;
446     }
447     col_cur++;
448     }
449     else
450     {
451     str_len = 1;
452     }
453    
454     col_cur++;
455     offset += str_len;
456    
457     moveto(row, col_cur);
458     iflush();
459     }
460     continue;
461     }
462     else if (ch == KEY_HOME || ch == KEY_UP)
463     {
464     if (offset > 0)
465     {
466     offset = 0;
467     col_cur = col + str_length(prompt, 1);
468    
469     moveto(row, col_cur);
470     iflush();
471     }
472     continue;
473     }
474     else if (ch == KEY_END || ch == KEY_DOWN)
475     {
476     if (offset < len)
477     {
478     offset = len;
479     col_cur = col + str_length(prompt, 1) + display_len;
480    
481     moveto(row, col_cur);
482     iflush();
483     }
484     continue;
485     }
486     else if (ch > 255 || iscntrl(ch))
487     {
488     continue;
489     }
490     else if ((ch & 0xff80) == 0x80) // head of multi-byte character
491     {
492     str_len = 0;
493     c = (char)(ch & 0b11110000);
494     while (c & 0b10000000)
495     {
496     input_str[str_len] = (char)(ch - 256);
497     str_len++;
498     c = (c & 0b01111111) << 1;
499    
500     if ((c & 0b10000000) == 0) // Input completed
501     {
502     break;
503     }
504    
505     // Expect additional bytes of input
506     ch = igetch(100); // 0.1 second
507     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
508     {
509     #ifdef _DEBUG
510     log_error("Ignore %d bytes of incomplete UTF8 character\n", str_len);
511     #endif
512     str_len = 0;
513     break;
514     }
515     }
516    
517     if (str_len == 0) // Incomplete input
518     {
519     continue;
520     }
521    
522     if (len + str_len > buf_size - 1 || display_len + 2 > max_display_len) // No enough space for Chinese character
523     {
524     outc('\a');
525     iflush();
526     continue;
527     }
528    
529     memmove(buffer + offset + str_len, buffer + offset, (size_t)(len - offset));
530     memcpy(buffer + offset, input_str, (size_t)str_len);
531     len += str_len;
532     buffer[len] = '\0';
533     display_len += 2;
534    
535     moveto(row, col_cur);
536     prints("%s", buffer + offset);
537     prints("%*s", max_display_len - display_len, "");
538    
539     col_cur += 2;
540    
541     moveto(row, col_cur);
542     iflush();
543    
544     offset += str_len;
545     }
546     else if (ch >= 32 && ch < 127) // Printable character
547     {
548     if (len + 1 > buf_size - 1 || display_len + 1 > max_display_len)
549     {
550     outc('\a');
551     iflush();
552     continue;
553     }
554    
555     memmove(buffer + offset + 1, buffer + offset, (size_t)(len - offset));
556     buffer[offset] = (char)ch;
557     len++;
558     buffer[len] = '\0';
559     display_len++;
560    
561     moveto(row, col_cur);
562     prints("%s", buffer + offset);
563     prints("%*s", max_display_len - display_len, "");
564    
565     col_cur++;
566    
567     moveto(row, col_cur);
568     iflush();
569    
570     offset++;
571     }
572     else // Invalid character
573     {
574     continue;
575     }
576     }
577 sysadm 1.21
578     return len;
579 sysadm 1.15 }
580    
581 sysadm 1.89 int display_data(const void *p_data, long display_line_total, const long *p_line_offsets, int eof_exit,
582 sysadm 1.81 display_data_key_handler key_handler, const char *help_filename)
583 sysadm 1.1 {
584 sysadm 1.37 static int show_help = 1;
585 sysadm 1.26 char buffer[LINE_BUFFER_LEN];
586 sysadm 1.85 DISPLAY_CTX ctx;
587 sysadm 1.81 int ch = 0;
588 sysadm 1.91 int input_ok;
589     const int screen_begin_row = 1;
590 sysadm 1.95 const int screen_row_total = SCREEN_ROWS - screen_begin_row;
591     int output_current_row = screen_begin_row;
592     int output_end_row = SCREEN_ROWS - 1;
593 sysadm 1.54 long int line_current = 0;
594 sysadm 1.34 long int len;
595     long int percentile;
596 sysadm 1.54 int loop;
597 sysadm 1.78 int eol, display_len;
598 sysadm 1.52
599 sysadm 1.95 clrline(output_current_row, SCREEN_ROWS);
600 sysadm 1.6
601 sysadm 1.81 // update msg_ext with extended key handler
602 sysadm 1.85 if (key_handler(&ch, &ctx) != 0)
603 sysadm 1.81 {
604     return ch;
605     }
606    
607 sysadm 1.54 loop = 1;
608 sysadm 1.44 while (!SYS_server_exit && loop)
609 sysadm 1.6 {
610 sysadm 1.91 if (eof_exit > 0 && line_current >= display_line_total && display_line_total <= screen_row_total)
611 sysadm 1.27 {
612 sysadm 1.82 if (eof_exit == 1)
613 sysadm 1.27 {
614     ch = press_any_key();
615     }
616 sysadm 1.82 else // if (eof_exit == 2)
617 sysadm 1.27 {
618     iflush();
619     }
620    
621     loop = 0;
622     break;
623     }
624    
625 sysadm 1.95 if (line_current >= display_line_total || output_current_row > output_end_row)
626 sysadm 1.21 {
627 sysadm 1.95 ctx.reach_begin = (line_current < output_current_row ? 1 : 0);
628 sysadm 1.85
629 sysadm 1.95 if (line_current - (output_current_row - screen_begin_row) + screen_row_total < display_line_total)
630 sysadm 1.27 {
631 sysadm 1.95 percentile = (line_current - (output_current_row - screen_begin_row) + screen_row_total) * 100 / display_line_total;
632 sysadm 1.85 ctx.reach_end = 0;
633 sysadm 1.27 }
634     else
635     {
636     percentile = 100;
637 sysadm 1.85 ctx.reach_end = 1;
638 sysadm 1.27 }
639 sysadm 1.6
640 sysadm 1.95 ctx.line_top = line_current - (output_current_row - screen_begin_row) + 1;
641     ctx.line_bottom = MIN(line_current - (output_current_row - screen_begin_row) + screen_row_total, display_line_total);
642 sysadm 1.85
643 sysadm 1.78 snprintf(buffer, sizeof(buffer),
644 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",
645 sysadm 1.85 ctx.line_top,
646     ctx.line_bottom,
647     percentile,
648     ctx.msg);
649 sysadm 1.78
650 sysadm 1.97 len = split_line(buffer, SCREEN_COLS, &eol, &display_len, 1);
651 sysadm 1.81 for (; display_len < SCREEN_COLS; display_len++)
652 sysadm 1.78 {
653     buffer[len++] = ' ';
654     }
655     buffer[len] = '\0';
656     strncat(buffer, "\033[m", sizeof(buffer) - 1 - strnlen(buffer, sizeof(buffer)));
657    
658 sysadm 1.53 moveto(SCREEN_ROWS, 0);
659 sysadm 1.80 prints("%s", buffer);
660 sysadm 1.26 iflush();
661 sysadm 1.6
662 sysadm 1.26 input_ok = 0;
663 sysadm 1.44 while (!SYS_server_exit && !input_ok)
664 sysadm 1.21 {
665 sysadm 1.94 ch = igetch_t(MAX_DELAY_TIME);
666     input_ok = 1;
667    
668 sysadm 1.110 if (ch != KEY_NULL && ch != KEY_TIMEOUT)
669     {
670     BBS_last_access_tm = time(NULL);
671     }
672    
673 sysadm 1.81 // extended key handler
674 sysadm 1.85 if (key_handler(&ch, &ctx) != 0)
675 sysadm 1.81 {
676     goto cleanup;
677     }
678    
679 sysadm 1.26 switch (ch)
680 sysadm 1.21 {
681 sysadm 1.67 case KEY_NULL:
682 sysadm 1.110 log_error("KEY_NULL\n");
683     goto cleanup;
684 sysadm 1.41 case KEY_TIMEOUT:
685 sysadm 1.110 log_error("User input timeout\n");
686 sysadm 1.41 goto cleanup;
687 sysadm 1.50 case KEY_HOME:
688 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
689 sysadm 1.84 {
690     break;
691     }
692 sysadm 1.54 line_current = 0;
693 sysadm 1.95 output_current_row = screen_begin_row;
694     output_end_row = SCREEN_ROWS - 1;
695     clrline(output_current_row, SCREEN_ROWS);
696 sysadm 1.50 break;
697     case KEY_END:
698 sysadm 1.91 if (display_line_total < screen_row_total)
699 sysadm 1.83 {
700 sysadm 1.84 break;
701 sysadm 1.83 }
702 sysadm 1.91 line_current = display_line_total - screen_row_total;
703 sysadm 1.95 output_current_row = screen_begin_row;
704     output_end_row = SCREEN_ROWS - 1;
705     clrline(output_current_row, SCREEN_ROWS);
706 sysadm 1.50 break;
707 sysadm 1.26 case KEY_UP:
708 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
709 sysadm 1.21 {
710     break;
711 sysadm 1.26 }
712 sysadm 1.95 line_current -= output_current_row;
713     output_current_row = screen_begin_row;
714 sysadm 1.89 // screen_end_line = screen_begin_line;
715 sysadm 1.39 // prints("\033[T"); // Scroll down 1 line
716 sysadm 1.95 output_end_row = SCREEN_ROWS - 1; // Legacy Fterm only works with this line
717 sysadm 1.26 break;
718 sysadm 1.49 case CR:
719 sysadm 1.78 case KEY_SPACE:
720 sysadm 1.26 case KEY_DOWN:
721 sysadm 1.95 if (line_current + (screen_row_total - (output_current_row - screen_begin_row)) >= display_line_total) // Reach end
722 sysadm 1.26 {
723 sysadm 1.21 break;
724 sysadm 1.26 }
725 sysadm 1.95 line_current += (screen_row_total - (output_current_row - screen_begin_row));
726     output_current_row = screen_row_total;
727     output_end_row = SCREEN_ROWS - 1;
728 sysadm 1.53 moveto(SCREEN_ROWS, 0);
729 sysadm 1.26 clrtoeol();
730 sysadm 1.104 // prints("\033[S"); // Scroll up 1 line
731 sysadm 1.103 prints("\n"); // Legacy Cterm only works with this line
732 sysadm 1.26 break;
733     case KEY_PGUP:
734 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
735 sysadm 1.26 {
736 sysadm 1.21 break;
737 sysadm 1.26 }
738 sysadm 1.95 line_current -= ((screen_row_total - 1) + (output_current_row - screen_begin_row));
739 sysadm 1.54 if (line_current < 0)
740 sysadm 1.26 {
741 sysadm 1.54 line_current = 0;
742 sysadm 1.26 }
743 sysadm 1.95 output_current_row = screen_begin_row;
744     output_end_row = SCREEN_ROWS - 1;
745     clrline(output_current_row, SCREEN_ROWS);
746 sysadm 1.26 break;
747     case KEY_PGDN:
748 sysadm 1.95 if (line_current + screen_row_total - (output_current_row - screen_begin_row) >= display_line_total) // Reach end
749 sysadm 1.26 {
750 sysadm 1.21 break;
751     }
752 sysadm 1.95 line_current += (screen_row_total - 1) - (output_current_row - screen_begin_row);
753 sysadm 1.91 if (line_current + screen_row_total > display_line_total) // No enough lines to display
754 sysadm 1.26 {
755 sysadm 1.91 line_current = display_line_total - screen_row_total;
756 sysadm 1.26 }
757 sysadm 1.95 output_current_row = screen_begin_row;
758     output_end_row = SCREEN_ROWS - 1;
759     clrline(output_current_row, SCREEN_ROWS);
760 sysadm 1.26 break;
761 sysadm 1.74 case KEY_ESC:
762 sysadm 1.26 case KEY_LEFT:
763 sysadm 1.27 loop = 0;
764 sysadm 1.26 break;
765     case 'h':
766 sysadm 1.81 if (!show_help) // Not reentrant
767 sysadm 1.37 {
768     break;
769     }
770 sysadm 1.26 // Display help information
771 sysadm 1.37 show_help = 0;
772 sysadm 1.89 display_file(help_filename, 1);
773 sysadm 1.37 show_help = 1;
774 sysadm 1.81 case KEY_F5:
775 sysadm 1.26 // Refresh after display help information
776 sysadm 1.95 line_current -= (output_current_row - screen_begin_row);
777     output_current_row = screen_begin_row;
778     output_end_row = SCREEN_ROWS - 1;
779     clrline(output_current_row, SCREEN_ROWS);
780 sysadm 1.89 break;
781 sysadm 1.81 case 0: // Refresh bottom line
782     break;
783 sysadm 1.26 default:
784     input_ok = 0;
785     break;
786 sysadm 1.21 }
787 sysadm 1.6 }
788 sysadm 1.21
789 sysadm 1.26 continue;
790     }
791 sysadm 1.21
792 sysadm 1.55 len = p_line_offsets[line_current + 1] - p_line_offsets[line_current];
793 sysadm 1.89 if (len >= sizeof(buffer))
794 sysadm 1.26 {
795 sysadm 1.87 log_error("Buffer overflow: len=%ld(%ld - %ld) line=%ld \n",
796 sysadm 1.62 len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
797 sysadm 1.89 len = sizeof(buffer) - 1;
798 sysadm 1.26 }
799 sysadm 1.87 else if (len < 0)
800     {
801     log_error("Incorrect line offsets: len=%ld(%ld - %ld) line=%ld \n",
802     len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
803     len = 0;
804     }
805 sysadm 1.52
806 sysadm 1.55 memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len);
807 sysadm 1.52 buffer[len] = '\0';
808    
809 sysadm 1.95 moveto(output_current_row, 0);
810 sysadm 1.26 clrtoeol();
811     prints("%s", buffer);
812 sysadm 1.54 line_current++;
813 sysadm 1.95 output_current_row++;
814 sysadm 1.26 }
815 sysadm 1.6
816 sysadm 1.41 cleanup:
817 sysadm 1.78 return ch;
818     }
819    
820 sysadm 1.85 static int display_file_key_handler(int *p_key, DISPLAY_CTX *p_ctx)
821 sysadm 1.81 {
822 sysadm 1.85 switch (*p_key)
823 sysadm 1.81 {
824     case 0: // Set msg
825 sysadm 1.85 snprintf(p_ctx->msg, sizeof(p_ctx->msg),
826 sysadm 1.104 "| 返回[\033[32m←\033[33m,\033[32mESC\033[33m] | "
827     "移动[\033[32m↑\033[33m/\033[32m↓\033[33m/\033[32mPgUp\033[33m/\033[32mPgDn\033[33m] | "
828     "帮助[\033[32mh\033[33m] |");
829 sysadm 1.81 break;
830     }
831    
832     return 0;
833     }
834    
835 sysadm 1.89 int display_file(const char *filename, int eof_exit)
836 sysadm 1.78 {
837 sysadm 1.81 int ret;
838 sysadm 1.78 const void *p_shm;
839     size_t data_len;
840     long line_total;
841     const void *p_data;
842     const long *p_line_offsets;
843    
844     if ((p_shm = get_file_shm_readonly(filename, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL)
845     {
846     log_error("get_file_shm(%s) error\n", filename);
847     return KEY_NULL;
848     }
849    
850 sysadm 1.101 if (user_online_update("VIEW_FILE") < 0)
851     {
852     log_error("user_online_update(VIEW_FILE) error\n");
853     }
854    
855 sysadm 1.89 ret = display_data(p_data, line_total, p_line_offsets, eof_exit, display_file_key_handler, DATA_READ_HELP);
856 sysadm 1.78
857 sysadm 1.69 if (detach_file_shm(p_shm) < 0)
858     {
859     log_error("detach_file_shm(%s) error\n", filename);
860     }
861    
862 sysadm 1.81 return ret;
863 sysadm 1.1 }
864 sysadm 1.9
865 sysadm 1.73 int show_top(const char *str_left, const char *str_middle, const char *str_right)
866 sysadm 1.9 {
867 sysadm 1.71 char str_left_f[STR_TOP_LEFT_MAX_LEN + 1];
868     char str_middle_f[STR_TOP_MIDDLE_MAX_LEN + 1];
869     char str_right_f[STR_TOP_RIGHT_MAX_LEN + 1];
870 sysadm 1.70 int str_left_len;
871 sysadm 1.71 int str_middle_len;
872 sysadm 1.70 int str_right_len;
873 sysadm 1.71 int eol;
874 sysadm 1.51 int len;
875 sysadm 1.40
876 sysadm 1.71 strncpy(str_left_f, str_left, sizeof(str_left_f) - 1);
877     str_left_f[sizeof(str_left_f) - 1] = '\0';
878 sysadm 1.105 len = split_line(str_left_f, STR_TOP_LEFT_MAX_LEN / 2, &eol, &str_left_len, 1);
879 sysadm 1.71 str_left_f[len] = '\0';
880    
881     strncpy(str_middle_f, str_middle, sizeof(str_middle_f) - 1);
882     str_middle_f[sizeof(str_middle_f) - 1] = '\0';
883 sysadm 1.105 len = split_line(str_middle, STR_TOP_MIDDLE_MAX_LEN / 2, &eol, &str_middle_len, 1);
884 sysadm 1.71 str_middle_f[len] = '\0';
885    
886 sysadm 1.73 strncpy(str_right_f, str_right, sizeof(str_right_f) - 1);
887 sysadm 1.71 str_right_f[sizeof(str_right_f) - 1] = '\0';
888 sysadm 1.105 len = split_line(str_right, STR_TOP_RIGHT_MAX_LEN / 2, &eol, &str_right_len, 1);
889 sysadm 1.71 str_right_f[len] = '\0';
890 sysadm 1.9
891 sysadm 1.21 moveto(1, 0);
892 sysadm 1.26 clrtoeol();
893 sysadm 1.105 prints("\033[1;44;33m%s\033[37m%*s%s\033[33m%*s%s\033[m",
894     str_left_f, 44 - str_left_len - str_middle_len, "",
895     str_middle_f, 36 - str_right_len, "", str_right_f);
896 sysadm 1.9
897 sysadm 1.21 return 0;
898 sysadm 1.9 }
899    
900 sysadm 1.57 int show_bottom(const char *msg)
901 sysadm 1.9 {
902 sysadm 1.26 char str_time[LINE_BUFFER_LEN];
903 sysadm 1.21 time_t time_online;
904     struct tm *tm_online;
905 sysadm 1.77 char msg_f[LINE_BUFFER_LEN];
906 sysadm 1.72 int eol;
907 sysadm 1.58 int msg_len;
908     int len;
909     int len_username;
910 sysadm 1.88 char str_tm_online[LINE_BUFFER_LEN];
911 sysadm 1.9
912 sysadm 1.26 get_time_str(str_time, sizeof(str_time));
913 sysadm 1.9
914 sysadm 1.76 msg_f[0] = '\0';
915     msg_len = 0;
916 sysadm 1.77 if (msg != NULL)
917 sysadm 1.76 {
918 sysadm 1.77 strncpy(msg_f, msg, sizeof(msg_f) - 1);
919 sysadm 1.76 msg_f[sizeof(msg_f) - 1] = '\0';
920 sysadm 1.97 len = split_line(msg_f, 23, &eol, &msg_len, 1);
921 sysadm 1.77 msg_f[len] = '\0';
922 sysadm 1.76 }
923 sysadm 1.58
924     len_username = (int)strnlen(BBS_username, sizeof(BBS_username));
925    
926 sysadm 1.99 time_online = time(NULL) - BBS_login_tm;
927 sysadm 1.21 tm_online = gmtime(&time_online);
928 sysadm 1.88 if (tm_online->tm_mday > 1)
929     {
930     snprintf(str_tm_online, sizeof(str_tm_online),
931 sysadm 1.104 "\033[36m%2d\033[33m天\033[36m%2d\033[33m时",
932 sysadm 1.89 tm_online->tm_mday - 1, tm_online->tm_hour);
933 sysadm 1.88 }
934     else
935     {
936     snprintf(str_tm_online, sizeof(str_tm_online),
937 sysadm 1.104 "\033[36m%2d\033[33m时\033[36m%2d\033[33m分",
938 sysadm 1.89 tm_online->tm_hour, tm_online->tm_min);
939 sysadm 1.88 }
940 sysadm 1.9
941 sysadm 1.53 moveto(SCREEN_ROWS, 0);
942 sysadm 1.26 clrtoeol();
943 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",
944 sysadm 1.88 str_time, msg_f, 38 - msg_len - len_username, "", BBS_username, str_tm_online);
945 sysadm 1.9
946 sysadm 1.21 return 0;
947 sysadm 1.9 }
948    
949 sysadm 1.21 int show_active_board()
950 sysadm 1.9 {
951 sysadm 1.59 static int line_current = 0;
952 sysadm 1.61 static const void *p_shm = NULL;
953 sysadm 1.59 static size_t data_len;
954     static long line_total;
955 sysadm 1.61 static const void *p_data;
956 sysadm 1.59 static const long *p_line_offsets;
957    
958 sysadm 1.65 static time_t t_last_show = 0;
959     static int line_last = 0;
960    
961 sysadm 1.26 char buffer[LINE_BUFFER_LEN];
962 sysadm 1.59 long int len;
963 sysadm 1.9
964 sysadm 1.61 if (p_shm == NULL)
965 sysadm 1.26 {
966 sysadm 1.69 if ((p_shm = get_file_shm_readonly(DATA_ACTIVE_BOARD, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL)
967 sysadm 1.9 {
968 sysadm 1.59 log_error("get_file_shm(%s) error\n", DATA_ACTIVE_BOARD);
969     return KEY_NULL;
970 sysadm 1.9 }
971 sysadm 1.26 }
972 sysadm 1.21
973 sysadm 1.99 if (time(NULL) - t_last_show >= 10)
974 sysadm 1.65 {
975     line_last = line_current;
976 sysadm 1.99 t_last_show = time(NULL);
977 sysadm 1.65 }
978     else
979     {
980     line_current = line_last;
981     }
982    
983 sysadm 1.64 clrline(2, 2 + ACTIVE_BOARD_HEIGHT);
984 sysadm 1.59
985 sysadm 1.26 for (int i = 0; i < ACTIVE_BOARD_HEIGHT; i++)
986     {
987 sysadm 1.59 len = p_line_offsets[line_current + 1] - p_line_offsets[line_current];
988     if (len >= LINE_BUFFER_LEN)
989 sysadm 1.9 {
990 sysadm 1.62 log_error("buffer overflow: len=%ld(%ld - %ld) line=%ld \n",
991     len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
992 sysadm 1.59 len = LINE_BUFFER_LEN - 1;
993 sysadm 1.9 }
994 sysadm 1.59
995     memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len);
996     buffer[len] = '\0';
997    
998 sysadm 1.26 moveto(3 + i, 0);
999     prints("%s", buffer);
1000 sysadm 1.59
1001     line_current++;
1002 sysadm 1.60 if (line_current >= line_total)
1003 sysadm 1.59 {
1004     line_current = 0;
1005     break;
1006     }
1007 sysadm 1.9 }
1008 sysadm 1.26
1009 sysadm 1.21 return 0;
1010 sysadm 1.9 }
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