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

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Revision 1.119 - (hide annotations)
Tue Oct 28 05:02:17 2025 UTC (4 months, 2 weeks ago) by sysadm
Branch: MAIN
Changes since 1.118: +13 -21 lines
Content type: text/x-csrc 
Refine date/time display format
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 1.119 static size_t get_time_str(char *s, size_t len)
44 sysadm 1.107 {
45     time_t curtime;
46     struct tm local_tm;
47    
48     time(&curtime);
49     localtime_r(&curtime, &local_tm);
50 sysadm 1.119 size_t j = strftime(s, len, "%m/%d %H:%M %Z", &local_tm);
51 sysadm 1.107
52 sysadm 1.119 return j;
53 sysadm 1.107 }
54    
55 sysadm 1.21 void moveto(int row, int col)
56 sysadm 1.1 {
57 sysadm 1.21 if (row >= 0)
58     {
59     prints("\033[%d;%dH", row, col);
60     }
61     else
62     {
63     prints("\r");
64     }
65 sysadm 1.1 }
66    
67 sysadm 1.21 void clrtoeol()
68 sysadm 1.1 {
69 sysadm 1.63 prints(CTRL_SEQ_CLR_LINE);
70 sysadm 1.2 }
71    
72 sysadm 1.21 void clrline(int line_begin, int line_end)
73 sysadm 1.5 {
74 sysadm 1.21 int i;
75 sysadm 1.6
76 sysadm 1.21 for (i = line_begin; i <= line_end; i++)
77     {
78     moveto(i, 0);
79 sysadm 1.63 prints(CTRL_SEQ_CLR_LINE);
80 sysadm 1.21 }
81 sysadm 1.5 }
82    
83 sysadm 1.21 void clrtobot(int line_begin)
84 sysadm 1.16 {
85 sysadm 1.21 moveto(line_begin, 0);
86 sysadm 1.25 prints("\033[J");
87     moveto(line_begin, 0);
88 sysadm 1.16 }
89    
90 sysadm 1.21 void clearscr()
91 sysadm 1.2 {
92 sysadm 1.23 prints("\033[2J");
93 sysadm 1.21 moveto(0, 0);
94 sysadm 1.6 }
95    
96 sysadm 1.113 inline int press_any_key()
97     {
98 sysadm 1.114 return press_any_key_ex(" \033[1;33m按任意键继续...\033[m", 60);
99 sysadm 1.113 }
100    
101 sysadm 1.114 int press_any_key_ex(const char *msg, int sec)
102 sysadm 1.6 {
103 sysadm 1.112 int ch = 0;
104     int duration = 0;
105     time_t t_begin = time(NULL);
106    
107 sysadm 1.53 moveto(SCREEN_ROWS, 0);
108 sysadm 1.21 clrtoeol();
109 sysadm 1.6
110 sysadm 1.113 prints(msg);
111 sysadm 1.21 iflush();
112 sysadm 1.6
113 sysadm 1.114 igetch_reset();
114    
115 sysadm 1.112 do
116     {
117 sysadm 1.114 ch = igetch_t(sec - duration);
118 sysadm 1.112 duration = (int)(time(NULL) - t_begin);
119     } while (!SYS_server_exit && ch == 0 && duration < 60);
120    
121     return ch;
122 sysadm 1.1 }
123    
124 sysadm 1.21 void set_input_echo(int echo)
125 sysadm 1.7 {
126 sysadm 1.21 if (echo)
127     {
128     outc('\x83'); // ASCII code 131
129     }
130     else
131     {
132 sysadm 1.111 // outc ('\x85'); // ASCII code 133
133 sysadm 1.21 prints("\xff\xfb\x01\xff\xfb\x03");
134     }
135 sysadm 1.111 iflush();
136 sysadm 1.7 }
137    
138 sysadm 1.104 static int _str_input(char *buffer, int buf_size, int max_display_len, int echo_mode)
139 sysadm 1.1 {
140 sysadm 1.104 int ch;
141 sysadm 1.38 int offset = 0;
142 sysadm 1.104 int eol;
143     int display_len;
144     char input_str[4];
145     int str_len = 0;
146     char c;
147 sysadm 1.1
148 sysadm 1.38 buffer[buf_size - 1] = '\0';
149 sysadm 1.104 offset = split_line(buffer, max_display_len, &eol, &display_len, 0);
150 sysadm 1.21
151 sysadm 1.47 igetch_reset();
152    
153 sysadm 1.48 while (!SYS_server_exit)
154 sysadm 1.1 {
155 sysadm 1.104 ch = igetch_t(MIN(MAX_DELAY_TIME, 60));
156 sysadm 1.48
157 sysadm 1.104 if (ch == CR)
158 sysadm 1.22 {
159 sysadm 1.21 break;
160 sysadm 1.22 }
161 sysadm 1.104 else if (ch == KEY_TIMEOUT || ch == KEY_NULL) // timeout or broken pipe
162 sysadm 1.41 {
163     return -1;
164     }
165 sysadm 1.104 else if (ch == LF || ch == '\0')
166 sysadm 1.22 {
167 sysadm 1.21 continue;
168 sysadm 1.22 }
169 sysadm 1.104 else if (ch == BACKSPACE)
170 sysadm 1.21 {
171     if (offset > 0)
172     {
173 sysadm 1.31 offset--;
174 sysadm 1.104 if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
175 sysadm 1.31 {
176 sysadm 1.115 while (offset > 0 && (buffer[offset] & 0xc0) != 0xc0)
177 sysadm 1.31 {
178 sysadm 1.104 offset--;
179 sysadm 1.31 }
180 sysadm 1.104 display_len--;
181     prints("\033[D \033[D");
182 sysadm 1.31 }
183     buffer[offset] = '\0';
184 sysadm 1.104 display_len--;
185 sysadm 1.31 prints("\033[D \033[D");
186 sysadm 1.21 iflush();
187     }
188     continue;
189     }
190 sysadm 1.104 else if (ch > 255 || iscntrl(ch))
191 sysadm 1.21 {
192     continue;
193     }
194 sysadm 1.104 else if ((ch & 0xff80) == 0x80) // head of multi-byte character
195 sysadm 1.21 {
196 sysadm 1.104 str_len = 0;
197 sysadm 1.115 c = (char)(ch & 0xf0);
198     while (c & 0x80)
199 sysadm 1.104 {
200     input_str[str_len] = (char)(ch - 256);
201     str_len++;
202 sysadm 1.115 c = (c & 0x7f) << 1;
203 sysadm 1.104
204 sysadm 1.115 if ((c & 0x80) == 0) // Input completed
205 sysadm 1.104 {
206     break;
207     }
208    
209     // Expect additional bytes of input
210     ch = igetch(100); // 0.1 second
211     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
212     {
213 sysadm 1.106 #ifdef _DEBUG
214 sysadm 1.104 log_error("Ignore %d bytes of incomplete UTF8 character\n", str_len);
215 sysadm 1.106 #endif
216 sysadm 1.104 str_len = 0;
217     break;
218     }
219     }
220    
221     if (str_len == 0) // Incomplete input
222     {
223     continue;
224     }
225    
226     if (offset + str_len > buf_size - 1 || display_len + 2 > max_display_len) // No enough space for Chinese character
227 sysadm 1.31 {
228     outc('\a');
229     iflush();
230     continue;
231     }
232 sysadm 1.104
233     memcpy(buffer + offset, input_str, (size_t)str_len);
234     offset += str_len;
235     buffer[offset] = '\0';
236     display_len += 2;
237    
238     switch (echo_mode)
239     {
240     case DOECHO:
241     prints(input_str);
242     break;
243     case NOECHO:
244     prints("**");
245     break;
246     }
247 sysadm 1.21 }
248 sysadm 1.104 else if (ch >= 32 && ch < 127) // Printable character
249 sysadm 1.21 {
250 sysadm 1.104 if (offset + 1 > buf_size - 1 || display_len + 1 > max_display_len)
251     {
252     outc('\a');
253     iflush();
254     continue;
255     }
256 sysadm 1.43
257 sysadm 1.104 buffer[offset++] = (char)ch;
258     buffer[offset] = '\0';
259     display_len++;
260 sysadm 1.43
261 sysadm 1.104 switch (echo_mode)
262     {
263     case DOECHO:
264     outc((char)ch);
265     break;
266     case NOECHO:
267     outc('*');
268     break;
269     }
270 sysadm 1.21 }
271 sysadm 1.104 else // Invalid character
272 sysadm 1.21 {
273 sysadm 1.104 continue;
274 sysadm 1.21 }
275 sysadm 1.104
276     iflush();
277 sysadm 1.6 }
278 sysadm 1.1
279 sysadm 1.21 return offset;
280 sysadm 1.1 }
281    
282 sysadm 1.38 int str_input(char *buffer, int buf_size, int echo_mode)
283 sysadm 1.18 {
284 sysadm 1.32 int len;
285    
286     buffer[0] = '\0';
287 sysadm 1.21
288 sysadm 1.104 len = _str_input(buffer, buf_size, buf_size, echo_mode);
289 sysadm 1.21
290 sysadm 1.32 prints("\r\n");
291     iflush();
292 sysadm 1.21
293 sysadm 1.32 return len;
294 sysadm 1.115 }
295 sysadm 1.18
296 sysadm 1.108 int get_data(int row, int col, char *prompt, char *buffer, int buf_size, int max_display_len)
297 sysadm 1.15 {
298 sysadm 1.108 int len = 0;
299     int col_cur = 0;
300     int ch;
301     int offset = 0;
302     int eol;
303     int display_len;
304     char input_str[4];
305     int str_len = 0;
306     char c;
307    
308     buffer[buf_size - 1] = '\0';
309     offset = split_line(buffer, max_display_len, &eol, &display_len, 0);
310     buffer[offset] = '\0';
311     len = offset;
312     col_cur = col + str_length(prompt, 1) + display_len;
313 sysadm 1.15
314 sysadm 1.21 moveto(row, col);
315 sysadm 1.80 prints("%s", prompt);
316     prints("%s", buffer);
317 sysadm 1.108 prints("%*s", max_display_len - display_len, "");
318     moveto(row, col_cur);
319 sysadm 1.21 iflush();
320 sysadm 1.15
321 sysadm 1.108 igetch_reset();
322    
323     while (!SYS_server_exit)
324     {
325     ch = igetch_t(MIN(MAX_DELAY_TIME, 60));
326    
327     if (ch == CR)
328     {
329     break;
330     }
331     else if (ch == KEY_TIMEOUT || ch == KEY_NULL) // timeout or broken pipe
332     {
333     return -1;
334     }
335     else if (ch == LF || ch == '\0')
336     {
337     continue;
338     }
339     else if (ch == BACKSPACE)
340     {
341     if (offset > 0)
342     {
343     str_len = 1;
344     offset--;
345     if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
346     {
347 sysadm 1.115 while (offset > 0 && (buffer[offset] & 0xc0) != 0xc0)
348 sysadm 1.108 {
349     str_len++;
350     offset--;
351     }
352     display_len--;
353     col_cur--;
354     }
355    
356     memmove(buffer + offset, buffer + offset + str_len, (size_t)(len - offset - str_len));
357     len -= str_len;
358     buffer[len] = '\0';
359     display_len--;
360     col_cur--;
361    
362     moveto(row, col_cur);
363     prints("%s", buffer + offset);
364     prints("%*s", max_display_len - display_len, "");
365     moveto(row, col_cur);
366     iflush();
367     }
368     continue;
369     }
370     else if (ch == KEY_DEL)
371     {
372     if (offset < len)
373     {
374     if ((buffer[offset] & 0x80) == 0x80) // head of multi-byte character
375     {
376     str_len = 0;
377 sysadm 1.115 c = (char)(buffer[offset] & 0xf0);
378     while (c & 0x80)
379 sysadm 1.108 {
380     str_len++;
381 sysadm 1.115 c = (c & 0x7f) << 1;
382 sysadm 1.108 }
383     display_len--;
384     }
385     else
386     {
387     str_len = 1;
388     }
389    
390     memmove(buffer + offset, buffer + offset + str_len, (size_t)(len - offset - str_len));
391     len -= str_len;
392     buffer[len] = '\0';
393     display_len--;
394    
395     moveto(row, col_cur);
396     prints("%s", buffer + offset);
397     prints("%*s", max_display_len - display_len, "");
398     moveto(row, col_cur);
399     iflush();
400     }
401     continue;
402     }
403     else if (ch == KEY_LEFT)
404     {
405     if (offset > 0)
406     {
407     str_len = 1;
408     offset--;
409     if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
410     {
411 sysadm 1.115 while (offset > 0 && (buffer[offset] & 0xc0) != 0xc0)
412 sysadm 1.108 {
413     str_len++;
414     offset--;
415     }
416     col_cur--;
417     }
418     col_cur--;
419    
420     moveto(row, col_cur);
421     iflush();
422     }
423     continue;
424     }
425     else if (ch == KEY_RIGHT)
426     {
427     if (offset < len)
428     {
429     str_len = 0;
430     if ((buffer[offset] & 0x80) == 0x80) // head of multi-byte character
431     {
432 sysadm 1.115 c = (char)(buffer[offset] & 0xf0);
433     while (c & 0x80)
434 sysadm 1.108 {
435     str_len++;
436 sysadm 1.115 c = (c & 0x7f) << 1;
437 sysadm 1.108 }
438     col_cur++;
439     }
440     else
441     {
442     str_len = 1;
443     }
444    
445     col_cur++;
446     offset += str_len;
447    
448     moveto(row, col_cur);
449     iflush();
450     }
451     continue;
452     }
453     else if (ch == KEY_HOME || ch == KEY_UP)
454     {
455     if (offset > 0)
456     {
457     offset = 0;
458     col_cur = col + str_length(prompt, 1);
459    
460     moveto(row, col_cur);
461     iflush();
462     }
463     continue;
464     }
465     else if (ch == KEY_END || ch == KEY_DOWN)
466     {
467     if (offset < len)
468     {
469     offset = len;
470     col_cur = col + str_length(prompt, 1) + display_len;
471    
472     moveto(row, col_cur);
473     iflush();
474     }
475     continue;
476     }
477     else if (ch > 255 || iscntrl(ch))
478     {
479     continue;
480     }
481     else if ((ch & 0xff80) == 0x80) // head of multi-byte character
482     {
483     str_len = 0;
484 sysadm 1.115 c = (char)(ch & 0xf0);
485     while (c & 0x80)
486 sysadm 1.108 {
487     input_str[str_len] = (char)(ch - 256);
488     str_len++;
489 sysadm 1.115 c = (c & 0x7f) << 1;
490 sysadm 1.108
491 sysadm 1.115 if ((c & 0x80) == 0) // Input completed
492 sysadm 1.108 {
493     break;
494     }
495    
496     // Expect additional bytes of input
497     ch = igetch(100); // 0.1 second
498     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
499     {
500     #ifdef _DEBUG
501     log_error("Ignore %d bytes of incomplete UTF8 character\n", str_len);
502     #endif
503     str_len = 0;
504     break;
505     }
506     }
507    
508     if (str_len == 0) // Incomplete input
509     {
510     continue;
511     }
512    
513     if (len + str_len > buf_size - 1 || display_len + 2 > max_display_len) // No enough space for Chinese character
514     {
515     outc('\a');
516     iflush();
517     continue;
518     }
519    
520     memmove(buffer + offset + str_len, buffer + offset, (size_t)(len - offset));
521     memcpy(buffer + offset, input_str, (size_t)str_len);
522     len += str_len;
523     buffer[len] = '\0';
524     display_len += 2;
525    
526     moveto(row, col_cur);
527     prints("%s", buffer + offset);
528     prints("%*s", max_display_len - display_len, "");
529    
530     col_cur += 2;
531    
532     moveto(row, col_cur);
533     iflush();
534    
535     offset += str_len;
536     }
537     else if (ch >= 32 && ch < 127) // Printable character
538     {
539     if (len + 1 > buf_size - 1 || display_len + 1 > max_display_len)
540     {
541     outc('\a');
542     iflush();
543     continue;
544     }
545    
546     memmove(buffer + offset + 1, buffer + offset, (size_t)(len - offset));
547     buffer[offset] = (char)ch;
548     len++;
549     buffer[len] = '\0';
550     display_len++;
551    
552     moveto(row, col_cur);
553     prints("%s", buffer + offset);
554     prints("%*s", max_display_len - display_len, "");
555    
556     col_cur++;
557    
558     moveto(row, col_cur);
559     iflush();
560    
561     offset++;
562     }
563     else // Invalid character
564     {
565     continue;
566     }
567     }
568 sysadm 1.21
569     return len;
570 sysadm 1.15 }
571    
572 sysadm 1.89 int display_data(const void *p_data, long display_line_total, const long *p_line_offsets, int eof_exit,
573 sysadm 1.81 display_data_key_handler key_handler, const char *help_filename)
574 sysadm 1.1 {
575 sysadm 1.37 static int show_help = 1;
576 sysadm 1.26 char buffer[LINE_BUFFER_LEN];
577 sysadm 1.85 DISPLAY_CTX ctx;
578 sysadm 1.81 int ch = 0;
579 sysadm 1.91 int input_ok;
580     const int screen_begin_row = 1;
581 sysadm 1.95 const int screen_row_total = SCREEN_ROWS - screen_begin_row;
582     int output_current_row = screen_begin_row;
583     int output_end_row = SCREEN_ROWS - 1;
584 sysadm 1.54 long int line_current = 0;
585 sysadm 1.34 long int len;
586     long int percentile;
587 sysadm 1.54 int loop;
588 sysadm 1.78 int eol, display_len;
589 sysadm 1.52
590 sysadm 1.95 clrline(output_current_row, SCREEN_ROWS);
591 sysadm 1.6
592 sysadm 1.81 // update msg_ext with extended key handler
593 sysadm 1.85 if (key_handler(&ch, &ctx) != 0)
594 sysadm 1.81 {
595     return ch;
596     }
597    
598 sysadm 1.54 loop = 1;
599 sysadm 1.44 while (!SYS_server_exit && loop)
600 sysadm 1.6 {
601 sysadm 1.91 if (eof_exit > 0 && line_current >= display_line_total && display_line_total <= screen_row_total)
602 sysadm 1.27 {
603 sysadm 1.82 if (eof_exit == 1)
604 sysadm 1.27 {
605     ch = press_any_key();
606     }
607 sysadm 1.82 else // if (eof_exit == 2)
608 sysadm 1.27 {
609     iflush();
610     }
611    
612     loop = 0;
613     break;
614     }
615    
616 sysadm 1.95 if (line_current >= display_line_total || output_current_row > output_end_row)
617 sysadm 1.21 {
618 sysadm 1.95 ctx.reach_begin = (line_current < output_current_row ? 1 : 0);
619 sysadm 1.85
620 sysadm 1.95 if (line_current - (output_current_row - screen_begin_row) + screen_row_total < display_line_total)
621 sysadm 1.27 {
622 sysadm 1.95 percentile = (line_current - (output_current_row - screen_begin_row) + screen_row_total) * 100 / display_line_total;
623 sysadm 1.85 ctx.reach_end = 0;
624 sysadm 1.27 }
625     else
626     {
627     percentile = 100;
628 sysadm 1.85 ctx.reach_end = 1;
629 sysadm 1.27 }
630 sysadm 1.6
631 sysadm 1.95 ctx.line_top = line_current - (output_current_row - screen_begin_row) + 1;
632     ctx.line_bottom = MIN(line_current - (output_current_row - screen_begin_row) + screen_row_total, display_line_total);
633 sysadm 1.85
634 sysadm 1.78 snprintf(buffer, sizeof(buffer),
635 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",
636 sysadm 1.85 ctx.line_top,
637     ctx.line_bottom,
638     percentile,
639     ctx.msg);
640 sysadm 1.78
641 sysadm 1.97 len = split_line(buffer, SCREEN_COLS, &eol, &display_len, 1);
642 sysadm 1.81 for (; display_len < SCREEN_COLS; display_len++)
643 sysadm 1.78 {
644     buffer[len++] = ' ';
645     }
646     buffer[len] = '\0';
647     strncat(buffer, "\033[m", sizeof(buffer) - 1 - strnlen(buffer, sizeof(buffer)));
648    
649 sysadm 1.53 moveto(SCREEN_ROWS, 0);
650 sysadm 1.80 prints("%s", buffer);
651 sysadm 1.26 iflush();
652 sysadm 1.6
653 sysadm 1.26 input_ok = 0;
654 sysadm 1.44 while (!SYS_server_exit && !input_ok)
655 sysadm 1.21 {
656 sysadm 1.94 ch = igetch_t(MAX_DELAY_TIME);
657     input_ok = 1;
658    
659 sysadm 1.110 if (ch != KEY_NULL && ch != KEY_TIMEOUT)
660     {
661     BBS_last_access_tm = time(NULL);
662     }
663    
664 sysadm 1.81 // extended key handler
665 sysadm 1.85 if (key_handler(&ch, &ctx) != 0)
666 sysadm 1.81 {
667     goto cleanup;
668     }
669    
670 sysadm 1.26 switch (ch)
671 sysadm 1.21 {
672 sysadm 1.67 case KEY_NULL:
673 sysadm 1.110 log_error("KEY_NULL\n");
674     goto cleanup;
675 sysadm 1.41 case KEY_TIMEOUT:
676 sysadm 1.110 log_error("User input timeout\n");
677 sysadm 1.41 goto cleanup;
678 sysadm 1.50 case KEY_HOME:
679 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
680 sysadm 1.84 {
681     break;
682     }
683 sysadm 1.54 line_current = 0;
684 sysadm 1.95 output_current_row = screen_begin_row;
685     output_end_row = SCREEN_ROWS - 1;
686     clrline(output_current_row, SCREEN_ROWS);
687 sysadm 1.50 break;
688     case KEY_END:
689 sysadm 1.91 if (display_line_total < screen_row_total)
690 sysadm 1.83 {
691 sysadm 1.84 break;
692 sysadm 1.83 }
693 sysadm 1.91 line_current = display_line_total - screen_row_total;
694 sysadm 1.95 output_current_row = screen_begin_row;
695     output_end_row = SCREEN_ROWS - 1;
696     clrline(output_current_row, SCREEN_ROWS);
697 sysadm 1.50 break;
698 sysadm 1.26 case KEY_UP:
699 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
700 sysadm 1.21 {
701     break;
702 sysadm 1.26 }
703 sysadm 1.95 line_current -= output_current_row;
704     output_current_row = screen_begin_row;
705 sysadm 1.89 // screen_end_line = screen_begin_line;
706 sysadm 1.39 // prints("\033[T"); // Scroll down 1 line
707 sysadm 1.95 output_end_row = SCREEN_ROWS - 1; // Legacy Fterm only works with this line
708 sysadm 1.26 break;
709 sysadm 1.49 case CR:
710 sysadm 1.26 case KEY_DOWN:
711 sysadm 1.95 if (line_current + (screen_row_total - (output_current_row - screen_begin_row)) >= display_line_total) // Reach end
712 sysadm 1.26 {
713 sysadm 1.21 break;
714 sysadm 1.26 }
715 sysadm 1.95 line_current += (screen_row_total - (output_current_row - screen_begin_row));
716     output_current_row = screen_row_total;
717     output_end_row = SCREEN_ROWS - 1;
718 sysadm 1.53 moveto(SCREEN_ROWS, 0);
719 sysadm 1.26 clrtoeol();
720 sysadm 1.104 // prints("\033[S"); // Scroll up 1 line
721 sysadm 1.103 prints("\n"); // Legacy Cterm only works with this line
722 sysadm 1.26 break;
723     case KEY_PGUP:
724 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
725 sysadm 1.26 {
726 sysadm 1.21 break;
727 sysadm 1.26 }
728 sysadm 1.95 line_current -= ((screen_row_total - 1) + (output_current_row - screen_begin_row));
729 sysadm 1.54 if (line_current < 0)
730 sysadm 1.26 {
731 sysadm 1.54 line_current = 0;
732 sysadm 1.26 }
733 sysadm 1.95 output_current_row = screen_begin_row;
734     output_end_row = SCREEN_ROWS - 1;
735     clrline(output_current_row, SCREEN_ROWS);
736 sysadm 1.26 break;
737 sysadm 1.116 case KEY_SPACE:
738 sysadm 1.26 case KEY_PGDN:
739 sysadm 1.95 if (line_current + screen_row_total - (output_current_row - screen_begin_row) >= display_line_total) // Reach end
740 sysadm 1.26 {
741 sysadm 1.21 break;
742     }
743 sysadm 1.95 line_current += (screen_row_total - 1) - (output_current_row - screen_begin_row);
744 sysadm 1.91 if (line_current + screen_row_total > display_line_total) // No enough lines to display
745 sysadm 1.26 {
746 sysadm 1.91 line_current = display_line_total - screen_row_total;
747 sysadm 1.26 }
748 sysadm 1.95 output_current_row = screen_begin_row;
749     output_end_row = SCREEN_ROWS - 1;
750     clrline(output_current_row, SCREEN_ROWS);
751 sysadm 1.26 break;
752 sysadm 1.74 case KEY_ESC:
753 sysadm 1.26 case KEY_LEFT:
754 sysadm 1.27 loop = 0;
755 sysadm 1.26 break;
756     case 'h':
757 sysadm 1.81 if (!show_help) // Not reentrant
758 sysadm 1.37 {
759     break;
760     }
761 sysadm 1.26 // Display help information
762 sysadm 1.37 show_help = 0;
763 sysadm 1.89 display_file(help_filename, 1);
764 sysadm 1.37 show_help = 1;
765 sysadm 1.81 case KEY_F5:
766 sysadm 1.26 // Refresh after display help information
767 sysadm 1.95 line_current -= (output_current_row - screen_begin_row);
768     output_current_row = screen_begin_row;
769     output_end_row = SCREEN_ROWS - 1;
770     clrline(output_current_row, SCREEN_ROWS);
771 sysadm 1.89 break;
772 sysadm 1.81 case 0: // Refresh bottom line
773     break;
774 sysadm 1.26 default:
775     input_ok = 0;
776     break;
777 sysadm 1.21 }
778 sysadm 1.6 }
779 sysadm 1.21
780 sysadm 1.26 continue;
781     }
782 sysadm 1.21
783 sysadm 1.55 len = p_line_offsets[line_current + 1] - p_line_offsets[line_current];
784 sysadm 1.89 if (len >= sizeof(buffer))
785 sysadm 1.26 {
786 sysadm 1.87 log_error("Buffer overflow: len=%ld(%ld - %ld) line=%ld \n",
787 sysadm 1.62 len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
788 sysadm 1.89 len = sizeof(buffer) - 1;
789 sysadm 1.26 }
790 sysadm 1.87 else if (len < 0)
791     {
792     log_error("Incorrect line offsets: len=%ld(%ld - %ld) line=%ld \n",
793     len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
794     len = 0;
795     }
796 sysadm 1.52
797 sysadm 1.55 memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len);
798 sysadm 1.52 buffer[len] = '\0';
799    
800 sysadm 1.95 moveto(output_current_row, 0);
801 sysadm 1.26 clrtoeol();
802     prints("%s", buffer);
803 sysadm 1.54 line_current++;
804 sysadm 1.95 output_current_row++;
805 sysadm 1.26 }
806 sysadm 1.6
807 sysadm 1.41 cleanup:
808 sysadm 1.78 return ch;
809     }
810    
811 sysadm 1.85 static int display_file_key_handler(int *p_key, DISPLAY_CTX *p_ctx)
812 sysadm 1.81 {
813 sysadm 1.85 switch (*p_key)
814 sysadm 1.81 {
815     case 0: // Set msg
816 sysadm 1.85 snprintf(p_ctx->msg, sizeof(p_ctx->msg),
817 sysadm 1.104 "| 返回[\033[32m←\033[33m,\033[32mESC\033[33m] | "
818     "移动[\033[32m↑\033[33m/\033[32m↓\033[33m/\033[32mPgUp\033[33m/\033[32mPgDn\033[33m] | "
819     "帮助[\033[32mh\033[33m] |");
820 sysadm 1.81 break;
821     }
822    
823     return 0;
824     }
825    
826 sysadm 1.89 int display_file(const char *filename, int eof_exit)
827 sysadm 1.78 {
828 sysadm 1.81 int ret;
829 sysadm 1.78 const void *p_shm;
830     size_t data_len;
831     long line_total;
832     const void *p_data;
833     const long *p_line_offsets;
834    
835     if ((p_shm = get_file_shm_readonly(filename, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL)
836     {
837     log_error("get_file_shm(%s) error\n", filename);
838     return KEY_NULL;
839     }
840    
841 sysadm 1.101 if (user_online_update("VIEW_FILE") < 0)
842     {
843     log_error("user_online_update(VIEW_FILE) error\n");
844     }
845    
846 sysadm 1.89 ret = display_data(p_data, line_total, p_line_offsets, eof_exit, display_file_key_handler, DATA_READ_HELP);
847 sysadm 1.78
848 sysadm 1.69 if (detach_file_shm(p_shm) < 0)
849     {
850     log_error("detach_file_shm(%s) error\n", filename);
851     }
852    
853 sysadm 1.81 return ret;
854 sysadm 1.1 }
855 sysadm 1.9
856 sysadm 1.73 int show_top(const char *str_left, const char *str_middle, const char *str_right)
857 sysadm 1.9 {
858 sysadm 1.71 char str_left_f[STR_TOP_LEFT_MAX_LEN + 1];
859     char str_middle_f[STR_TOP_MIDDLE_MAX_LEN + 1];
860     char str_right_f[STR_TOP_RIGHT_MAX_LEN + 1];
861 sysadm 1.70 int str_left_len;
862 sysadm 1.71 int str_middle_len;
863 sysadm 1.70 int str_right_len;
864 sysadm 1.71 int eol;
865 sysadm 1.51 int len;
866 sysadm 1.40
867 sysadm 1.71 strncpy(str_left_f, str_left, sizeof(str_left_f) - 1);
868     str_left_f[sizeof(str_left_f) - 1] = '\0';
869 sysadm 1.105 len = split_line(str_left_f, STR_TOP_LEFT_MAX_LEN / 2, &eol, &str_left_len, 1);
870 sysadm 1.71 str_left_f[len] = '\0';
871    
872     strncpy(str_middle_f, str_middle, sizeof(str_middle_f) - 1);
873     str_middle_f[sizeof(str_middle_f) - 1] = '\0';
874 sysadm 1.105 len = split_line(str_middle, STR_TOP_MIDDLE_MAX_LEN / 2, &eol, &str_middle_len, 1);
875 sysadm 1.71 str_middle_f[len] = '\0';
876    
877 sysadm 1.73 strncpy(str_right_f, str_right, sizeof(str_right_f) - 1);
878 sysadm 1.71 str_right_f[sizeof(str_right_f) - 1] = '\0';
879 sysadm 1.105 len = split_line(str_right, STR_TOP_RIGHT_MAX_LEN / 2, &eol, &str_right_len, 1);
880 sysadm 1.71 str_right_f[len] = '\0';
881 sysadm 1.9
882 sysadm 1.21 moveto(1, 0);
883 sysadm 1.26 clrtoeol();
884 sysadm 1.105 prints("\033[1;44;33m%s\033[37m%*s%s\033[33m%*s%s\033[m",
885     str_left_f, 44 - str_left_len - str_middle_len, "",
886     str_middle_f, 36 - str_right_len, "", str_right_f);
887 sysadm 1.9
888 sysadm 1.21 return 0;
889 sysadm 1.9 }
890    
891 sysadm 1.57 int show_bottom(const char *msg)
892 sysadm 1.9 {
893 sysadm 1.26 char str_time[LINE_BUFFER_LEN];
894 sysadm 1.119 int len_str_time;
895 sysadm 1.21 time_t time_online;
896     struct tm *tm_online;
897 sysadm 1.77 char msg_f[LINE_BUFFER_LEN];
898 sysadm 1.72 int eol;
899 sysadm 1.119 int len_msg;
900 sysadm 1.58 int len;
901     int len_username;
902 sysadm 1.88 char str_tm_online[LINE_BUFFER_LEN];
903 sysadm 1.9
904 sysadm 1.119 len_str_time = (int)get_time_str(str_time, sizeof(str_time));
905 sysadm 1.9
906 sysadm 1.76 msg_f[0] = '\0';
907 sysadm 1.119 len_msg = 0;
908 sysadm 1.77 if (msg != NULL)
909 sysadm 1.76 {
910 sysadm 1.77 strncpy(msg_f, msg, sizeof(msg_f) - 1);
911 sysadm 1.76 msg_f[sizeof(msg_f) - 1] = '\0';
912 sysadm 1.119 len = split_line(msg_f, 23, &eol, &len_msg, 1);
913 sysadm 1.77 msg_f[len] = '\0';
914 sysadm 1.76 }
915 sysadm 1.58
916     len_username = (int)strnlen(BBS_username, sizeof(BBS_username));
917    
918 sysadm 1.99 time_online = time(NULL) - BBS_login_tm;
919 sysadm 1.21 tm_online = gmtime(&time_online);
920 sysadm 1.118 if (tm_online->tm_mday > 1)
921 sysadm 1.88 {
922     snprintf(str_tm_online, sizeof(str_tm_online),
923 sysadm 1.119 "\033[36m%d\033[33md \033[36m%d\033[33m:\033[36m%.2d",
924     tm_online->tm_mday - 1, tm_online->tm_hour, tm_online->tm_min);
925 sysadm 1.88 }
926     else
927     {
928     snprintf(str_tm_online, sizeof(str_tm_online),
929 sysadm 1.119 "\033[36m%d\033[33m:\033[36m%.2d",
930 sysadm 1.89 tm_online->tm_hour, tm_online->tm_min);
931 sysadm 1.88 }
932 sysadm 1.9
933 sysadm 1.53 moveto(SCREEN_ROWS, 0);
934 sysadm 1.26 clrtoeol();
935 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",
936     str_time, msg_f, 60 - len_str_time - len_msg - len_username, "", BBS_username, str_tm_online);
937 sysadm 1.9
938 sysadm 1.21 return 0;
939 sysadm 1.9 }
940    
941 sysadm 1.21 int show_active_board()
942 sysadm 1.9 {
943 sysadm 1.59 static int line_current = 0;
944 sysadm 1.61 static const void *p_shm = NULL;
945 sysadm 1.59 static size_t data_len;
946     static long line_total;
947 sysadm 1.61 static const void *p_data;
948 sysadm 1.59 static const long *p_line_offsets;
949    
950 sysadm 1.65 static time_t t_last_show = 0;
951     static int line_last = 0;
952    
953 sysadm 1.26 char buffer[LINE_BUFFER_LEN];
954 sysadm 1.59 long int len;
955 sysadm 1.9
956 sysadm 1.61 if (p_shm == NULL)
957 sysadm 1.26 {
958 sysadm 1.69 if ((p_shm = get_file_shm_readonly(DATA_ACTIVE_BOARD, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL)
959 sysadm 1.9 {
960 sysadm 1.59 log_error("get_file_shm(%s) error\n", DATA_ACTIVE_BOARD);
961     return KEY_NULL;
962 sysadm 1.9 }
963 sysadm 1.26 }
964 sysadm 1.21
965 sysadm 1.99 if (time(NULL) - t_last_show >= 10)
966 sysadm 1.65 {
967     line_last = line_current;
968 sysadm 1.99 t_last_show = time(NULL);
969 sysadm 1.65 }
970     else
971     {
972     line_current = line_last;
973     }
974    
975 sysadm 1.64 clrline(2, 2 + ACTIVE_BOARD_HEIGHT);
976 sysadm 1.59
977 sysadm 1.26 for (int i = 0; i < ACTIVE_BOARD_HEIGHT; i++)
978     {
979 sysadm 1.59 len = p_line_offsets[line_current + 1] - p_line_offsets[line_current];
980     if (len >= LINE_BUFFER_LEN)
981 sysadm 1.9 {
982 sysadm 1.62 log_error("buffer overflow: len=%ld(%ld - %ld) line=%ld \n",
983     len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
984 sysadm 1.59 len = LINE_BUFFER_LEN - 1;
985 sysadm 1.9 }
986 sysadm 1.59
987     memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len);
988     buffer[len] = '\0';
989    
990 sysadm 1.26 moveto(3 + i, 0);
991     prints("%s", buffer);
992 sysadm 1.59
993     line_current++;
994 sysadm 1.60 if (line_current >= line_total)
995 sysadm 1.59 {
996     line_current = 0;
997     break;
998     }
999 sysadm 1.9 }
1000 sysadm 1.26
1001 sysadm 1.21 return 0;
1002 sysadm 1.9 }
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