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

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Revision 1.112 - (hide annotations)
Fri Oct 17 10:57:43 2025 UTC (4 months, 4 weeks ago) by sysadm
Branch: MAIN
Changes since 1.111: +12 -1 lines
Content type: text/x-csrc 
Ignore empty input in press_any_key()
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 1.21 int press_any_key()
106 sysadm 1.6 {
107 sysadm 1.112 int ch = 0;
108     int wait_seconds = 60;
109     int duration = 0;
110     time_t t_begin = time(NULL);
111    
112 sysadm 1.53 moveto(SCREEN_ROWS, 0);
113 sysadm 1.21 clrtoeol();
114 sysadm 1.6
115 sysadm 1.104 prints(" \033[1;33m按任意键继续...\033[0;37m");
116 sysadm 1.21 iflush();
117 sysadm 1.6
118 sysadm 1.112 do
119     {
120     ch = igetch_t(wait_seconds - duration);
121     duration = (int)(time(NULL) - t_begin);
122     } while (!SYS_server_exit && ch == 0 && duration < 60);
123    
124     return ch;
125 sysadm 1.1 }
126    
127 sysadm 1.21 void set_input_echo(int echo)
128 sysadm 1.7 {
129 sysadm 1.21 if (echo)
130     {
131     outc('\x83'); // ASCII code 131
132     }
133     else
134     {
135 sysadm 1.111 // outc ('\x85'); // ASCII code 133
136 sysadm 1.21 prints("\xff\xfb\x01\xff\xfb\x03");
137     }
138 sysadm 1.111 iflush();
139 sysadm 1.7 }
140    
141 sysadm 1.104 static int _str_input(char *buffer, int buf_size, int max_display_len, int echo_mode)
142 sysadm 1.1 {
143 sysadm 1.104 int ch;
144 sysadm 1.38 int offset = 0;
145 sysadm 1.104 int eol;
146     int display_len;
147     char input_str[4];
148     int str_len = 0;
149     char c;
150 sysadm 1.1
151 sysadm 1.38 buffer[buf_size - 1] = '\0';
152 sysadm 1.104 offset = split_line(buffer, max_display_len, &eol, &display_len, 0);
153 sysadm 1.21
154 sysadm 1.47 igetch_reset();
155    
156 sysadm 1.48 while (!SYS_server_exit)
157 sysadm 1.1 {
158 sysadm 1.104 ch = igetch_t(MIN(MAX_DELAY_TIME, 60));
159 sysadm 1.48
160 sysadm 1.104 if (ch == CR)
161 sysadm 1.22 {
162 sysadm 1.21 break;
163 sysadm 1.22 }
164 sysadm 1.104 else if (ch == KEY_TIMEOUT || ch == KEY_NULL) // timeout or broken pipe
165 sysadm 1.41 {
166     return -1;
167     }
168 sysadm 1.104 else if (ch == LF || ch == '\0')
169 sysadm 1.22 {
170 sysadm 1.21 continue;
171 sysadm 1.22 }
172 sysadm 1.104 else if (ch == BACKSPACE)
173 sysadm 1.21 {
174     if (offset > 0)
175     {
176 sysadm 1.31 offset--;
177 sysadm 1.104 if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
178 sysadm 1.31 {
179 sysadm 1.104 while (offset > 0 && (buffer[offset] & 0b11000000) != 0b11000000)
180 sysadm 1.31 {
181 sysadm 1.104 offset--;
182 sysadm 1.31 }
183 sysadm 1.104 display_len--;
184     prints("\033[D \033[D");
185 sysadm 1.31 }
186     buffer[offset] = '\0';
187 sysadm 1.104 display_len--;
188 sysadm 1.31 prints("\033[D \033[D");
189 sysadm 1.21 iflush();
190     }
191     continue;
192     }
193 sysadm 1.104 else if (ch > 255 || iscntrl(ch))
194 sysadm 1.21 {
195     continue;
196     }
197 sysadm 1.104 else if ((ch & 0xff80) == 0x80) // head of multi-byte character
198 sysadm 1.21 {
199 sysadm 1.104 str_len = 0;
200     c = (char)(ch & 0b11110000);
201     while (c & 0b10000000)
202     {
203     input_str[str_len] = (char)(ch - 256);
204     str_len++;
205     c = (c & 0b01111111) << 1;
206    
207     if ((c & 0b10000000) == 0) // Input completed
208     {
209     break;
210     }
211    
212     // Expect additional bytes of input
213     ch = igetch(100); // 0.1 second
214     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
215     {
216 sysadm 1.106 #ifdef _DEBUG
217 sysadm 1.104 log_error("Ignore %d bytes of incomplete UTF8 character\n", str_len);
218 sysadm 1.106 #endif
219 sysadm 1.104 str_len = 0;
220     break;
221     }
222     }
223    
224     if (str_len == 0) // Incomplete input
225     {
226     continue;
227     }
228    
229     if (offset + str_len > buf_size - 1 || display_len + 2 > max_display_len) // No enough space for Chinese character
230 sysadm 1.31 {
231     outc('\a');
232     iflush();
233     continue;
234     }
235 sysadm 1.104
236     memcpy(buffer + offset, input_str, (size_t)str_len);
237     offset += str_len;
238     buffer[offset] = '\0';
239     display_len += 2;
240    
241     switch (echo_mode)
242     {
243     case DOECHO:
244     prints(input_str);
245     break;
246     case NOECHO:
247     prints("**");
248     break;
249     }
250 sysadm 1.21 }
251 sysadm 1.104 else if (ch >= 32 && ch < 127) // Printable character
252 sysadm 1.21 {
253 sysadm 1.104 if (offset + 1 > buf_size - 1 || display_len + 1 > max_display_len)
254     {
255     outc('\a');
256     iflush();
257     continue;
258     }
259 sysadm 1.43
260 sysadm 1.104 buffer[offset++] = (char)ch;
261     buffer[offset] = '\0';
262     display_len++;
263 sysadm 1.43
264 sysadm 1.104 switch (echo_mode)
265     {
266     case DOECHO:
267     outc((char)ch);
268     break;
269     case NOECHO:
270     outc('*');
271     break;
272     }
273 sysadm 1.21 }
274 sysadm 1.104 else // Invalid character
275 sysadm 1.21 {
276 sysadm 1.104 continue;
277 sysadm 1.21 }
278 sysadm 1.104
279     iflush();
280 sysadm 1.6 }
281 sysadm 1.1
282 sysadm 1.21 return offset;
283 sysadm 1.1 }
284    
285 sysadm 1.38 int str_input(char *buffer, int buf_size, int echo_mode)
286 sysadm 1.18 {
287 sysadm 1.32 int len;
288    
289     buffer[0] = '\0';
290 sysadm 1.21
291 sysadm 1.104 len = _str_input(buffer, buf_size, buf_size, echo_mode);
292 sysadm 1.21
293 sysadm 1.32 prints("\r\n");
294     iflush();
295 sysadm 1.21
296 sysadm 1.32 return len;
297 sysadm 1.18 };
298    
299 sysadm 1.108 int get_data(int row, int col, char *prompt, char *buffer, int buf_size, int max_display_len)
300 sysadm 1.15 {
301 sysadm 1.108 int len = 0;
302     int col_cur = 0;
303     int ch;
304     int offset = 0;
305     int eol;
306     int display_len;
307     char input_str[4];
308     int str_len = 0;
309     char c;
310    
311     buffer[buf_size - 1] = '\0';
312     offset = split_line(buffer, max_display_len, &eol, &display_len, 0);
313     buffer[offset] = '\0';
314     len = offset;
315     col_cur = col + str_length(prompt, 1) + display_len;
316 sysadm 1.15
317 sysadm 1.21 moveto(row, col);
318 sysadm 1.80 prints("%s", prompt);
319     prints("%s", buffer);
320 sysadm 1.108 prints("%*s", max_display_len - display_len, "");
321     moveto(row, col_cur);
322 sysadm 1.21 iflush();
323 sysadm 1.15
324 sysadm 1.108 igetch_reset();
325    
326     while (!SYS_server_exit)
327     {
328     ch = igetch_t(MIN(MAX_DELAY_TIME, 60));
329    
330     if (ch == CR)
331     {
332     break;
333     }
334     else if (ch == KEY_TIMEOUT || ch == KEY_NULL) // timeout or broken pipe
335     {
336     return -1;
337     }
338     else if (ch == LF || ch == '\0')
339     {
340     continue;
341     }
342     else if (ch == BACKSPACE)
343     {
344     if (offset > 0)
345     {
346     str_len = 1;
347     offset--;
348     if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
349     {
350     while (offset > 0 && (buffer[offset] & 0b11000000) != 0b11000000)
351     {
352     str_len++;
353     offset--;
354     }
355     display_len--;
356     col_cur--;
357     }
358    
359     memmove(buffer + offset, buffer + offset + str_len, (size_t)(len - offset - str_len));
360     len -= str_len;
361     buffer[len] = '\0';
362     display_len--;
363     col_cur--;
364    
365     moveto(row, col_cur);
366     prints("%s", buffer + offset);
367     prints("%*s", max_display_len - display_len, "");
368     moveto(row, col_cur);
369     iflush();
370     }
371     continue;
372     }
373     else if (ch == KEY_DEL)
374     {
375     if (offset < len)
376     {
377     if ((buffer[offset] & 0x80) == 0x80) // head of multi-byte character
378     {
379     str_len = 0;
380     c = (char)(buffer[offset] & 0b11110000);
381     while (c & 0b10000000)
382     {
383     str_len++;
384     c = (c & 0b01111111) << 1;
385     }
386     display_len--;
387     }
388     else
389     {
390     str_len = 1;
391     }
392    
393     memmove(buffer + offset, buffer + offset + str_len, (size_t)(len - offset - str_len));
394     len -= str_len;
395     buffer[len] = '\0';
396     display_len--;
397    
398     moveto(row, col_cur);
399     prints("%s", buffer + offset);
400     prints("%*s", max_display_len - display_len, "");
401     moveto(row, col_cur);
402     iflush();
403     }
404     continue;
405     }
406     else if (ch == KEY_LEFT)
407     {
408     if (offset > 0)
409     {
410     str_len = 1;
411     offset--;
412     if (buffer[offset] < 0 || buffer[offset] > 127) // UTF8
413     {
414     while (offset > 0 && (buffer[offset] & 0b11000000) != 0b11000000)
415     {
416     str_len++;
417     offset--;
418     }
419     col_cur--;
420     }
421     col_cur--;
422    
423     moveto(row, col_cur);
424     iflush();
425     }
426     continue;
427     }
428     else if (ch == KEY_RIGHT)
429     {
430     if (offset < len)
431     {
432     str_len = 0;
433     if ((buffer[offset] & 0x80) == 0x80) // head of multi-byte character
434     {
435     c = (char)(buffer[offset] & 0b11110000);
436     while (c & 0b10000000)
437     {
438     str_len++;
439     c = (c & 0b01111111) << 1;
440     }
441     col_cur++;
442     }
443     else
444     {
445     str_len = 1;
446     }
447    
448     col_cur++;
449     offset += str_len;
450    
451     moveto(row, col_cur);
452     iflush();
453     }
454     continue;
455     }
456     else if (ch == KEY_HOME || ch == KEY_UP)
457     {
458     if (offset > 0)
459     {
460     offset = 0;
461     col_cur = col + str_length(prompt, 1);
462    
463     moveto(row, col_cur);
464     iflush();
465     }
466     continue;
467     }
468     else if (ch == KEY_END || ch == KEY_DOWN)
469     {
470     if (offset < len)
471     {
472     offset = len;
473     col_cur = col + str_length(prompt, 1) + display_len;
474    
475     moveto(row, col_cur);
476     iflush();
477     }
478     continue;
479     }
480     else if (ch > 255 || iscntrl(ch))
481     {
482     continue;
483     }
484     else if ((ch & 0xff80) == 0x80) // head of multi-byte character
485     {
486     str_len = 0;
487     c = (char)(ch & 0b11110000);
488     while (c & 0b10000000)
489     {
490     input_str[str_len] = (char)(ch - 256);
491     str_len++;
492     c = (c & 0b01111111) << 1;
493    
494     if ((c & 0b10000000) == 0) // Input completed
495     {
496     break;
497     }
498    
499     // Expect additional bytes of input
500     ch = igetch(100); // 0.1 second
501     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
502     {
503     #ifdef _DEBUG
504     log_error("Ignore %d bytes of incomplete UTF8 character\n", str_len);
505     #endif
506     str_len = 0;
507     break;
508     }
509     }
510    
511     if (str_len == 0) // Incomplete input
512     {
513     continue;
514     }
515    
516     if (len + str_len > buf_size - 1 || display_len + 2 > max_display_len) // No enough space for Chinese character
517     {
518     outc('\a');
519     iflush();
520     continue;
521     }
522    
523     memmove(buffer + offset + str_len, buffer + offset, (size_t)(len - offset));
524     memcpy(buffer + offset, input_str, (size_t)str_len);
525     len += str_len;
526     buffer[len] = '\0';
527     display_len += 2;
528    
529     moveto(row, col_cur);
530     prints("%s", buffer + offset);
531     prints("%*s", max_display_len - display_len, "");
532    
533     col_cur += 2;
534    
535     moveto(row, col_cur);
536     iflush();
537    
538     offset += str_len;
539     }
540     else if (ch >= 32 && ch < 127) // Printable character
541     {
542     if (len + 1 > buf_size - 1 || display_len + 1 > max_display_len)
543     {
544     outc('\a');
545     iflush();
546     continue;
547     }
548    
549     memmove(buffer + offset + 1, buffer + offset, (size_t)(len - offset));
550     buffer[offset] = (char)ch;
551     len++;
552     buffer[len] = '\0';
553     display_len++;
554    
555     moveto(row, col_cur);
556     prints("%s", buffer + offset);
557     prints("%*s", max_display_len - display_len, "");
558    
559     col_cur++;
560    
561     moveto(row, col_cur);
562     iflush();
563    
564     offset++;
565     }
566     else // Invalid character
567     {
568     continue;
569     }
570     }
571 sysadm 1.21
572     return len;
573 sysadm 1.15 }
574    
575 sysadm 1.89 int display_data(const void *p_data, long display_line_total, const long *p_line_offsets, int eof_exit,
576 sysadm 1.81 display_data_key_handler key_handler, const char *help_filename)
577 sysadm 1.1 {
578 sysadm 1.37 static int show_help = 1;
579 sysadm 1.26 char buffer[LINE_BUFFER_LEN];
580 sysadm 1.85 DISPLAY_CTX ctx;
581 sysadm 1.81 int ch = 0;
582 sysadm 1.91 int input_ok;
583     const int screen_begin_row = 1;
584 sysadm 1.95 const int screen_row_total = SCREEN_ROWS - screen_begin_row;
585     int output_current_row = screen_begin_row;
586     int output_end_row = SCREEN_ROWS - 1;
587 sysadm 1.54 long int line_current = 0;
588 sysadm 1.34 long int len;
589     long int percentile;
590 sysadm 1.54 int loop;
591 sysadm 1.78 int eol, display_len;
592 sysadm 1.52
593 sysadm 1.95 clrline(output_current_row, SCREEN_ROWS);
594 sysadm 1.6
595 sysadm 1.81 // update msg_ext with extended key handler
596 sysadm 1.85 if (key_handler(&ch, &ctx) != 0)
597 sysadm 1.81 {
598     return ch;
599     }
600    
601 sysadm 1.54 loop = 1;
602 sysadm 1.44 while (!SYS_server_exit && loop)
603 sysadm 1.6 {
604 sysadm 1.91 if (eof_exit > 0 && line_current >= display_line_total && display_line_total <= screen_row_total)
605 sysadm 1.27 {
606 sysadm 1.82 if (eof_exit == 1)
607 sysadm 1.27 {
608     ch = press_any_key();
609     }
610 sysadm 1.82 else // if (eof_exit == 2)
611 sysadm 1.27 {
612     iflush();
613     }
614    
615     loop = 0;
616     break;
617     }
618    
619 sysadm 1.95 if (line_current >= display_line_total || output_current_row > output_end_row)
620 sysadm 1.21 {
621 sysadm 1.95 ctx.reach_begin = (line_current < output_current_row ? 1 : 0);
622 sysadm 1.85
623 sysadm 1.95 if (line_current - (output_current_row - screen_begin_row) + screen_row_total < display_line_total)
624 sysadm 1.27 {
625 sysadm 1.95 percentile = (line_current - (output_current_row - screen_begin_row) + screen_row_total) * 100 / display_line_total;
626 sysadm 1.85 ctx.reach_end = 0;
627 sysadm 1.27 }
628     else
629     {
630     percentile = 100;
631 sysadm 1.85 ctx.reach_end = 1;
632 sysadm 1.27 }
633 sysadm 1.6
634 sysadm 1.95 ctx.line_top = line_current - (output_current_row - screen_begin_row) + 1;
635     ctx.line_bottom = MIN(line_current - (output_current_row - screen_begin_row) + screen_row_total, display_line_total);
636 sysadm 1.85
637 sysadm 1.78 snprintf(buffer, sizeof(buffer),
638 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",
639 sysadm 1.85 ctx.line_top,
640     ctx.line_bottom,
641     percentile,
642     ctx.msg);
643 sysadm 1.78
644 sysadm 1.97 len = split_line(buffer, SCREEN_COLS, &eol, &display_len, 1);
645 sysadm 1.81 for (; display_len < SCREEN_COLS; display_len++)
646 sysadm 1.78 {
647     buffer[len++] = ' ';
648     }
649     buffer[len] = '\0';
650     strncat(buffer, "\033[m", sizeof(buffer) - 1 - strnlen(buffer, sizeof(buffer)));
651    
652 sysadm 1.53 moveto(SCREEN_ROWS, 0);
653 sysadm 1.80 prints("%s", buffer);
654 sysadm 1.26 iflush();
655 sysadm 1.6
656 sysadm 1.26 input_ok = 0;
657 sysadm 1.44 while (!SYS_server_exit && !input_ok)
658 sysadm 1.21 {
659 sysadm 1.94 ch = igetch_t(MAX_DELAY_TIME);
660     input_ok = 1;
661    
662 sysadm 1.110 if (ch != KEY_NULL && ch != KEY_TIMEOUT)
663     {
664     BBS_last_access_tm = time(NULL);
665     }
666    
667 sysadm 1.81 // extended key handler
668 sysadm 1.85 if (key_handler(&ch, &ctx) != 0)
669 sysadm 1.81 {
670     goto cleanup;
671     }
672    
673 sysadm 1.26 switch (ch)
674 sysadm 1.21 {
675 sysadm 1.67 case KEY_NULL:
676 sysadm 1.110 log_error("KEY_NULL\n");
677     goto cleanup;
678 sysadm 1.41 case KEY_TIMEOUT:
679 sysadm 1.110 log_error("User input timeout\n");
680 sysadm 1.41 goto cleanup;
681 sysadm 1.50 case KEY_HOME:
682 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
683 sysadm 1.84 {
684     break;
685     }
686 sysadm 1.54 line_current = 0;
687 sysadm 1.95 output_current_row = screen_begin_row;
688     output_end_row = SCREEN_ROWS - 1;
689     clrline(output_current_row, SCREEN_ROWS);
690 sysadm 1.50 break;
691     case KEY_END:
692 sysadm 1.91 if (display_line_total < screen_row_total)
693 sysadm 1.83 {
694 sysadm 1.84 break;
695 sysadm 1.83 }
696 sysadm 1.91 line_current = display_line_total - screen_row_total;
697 sysadm 1.95 output_current_row = screen_begin_row;
698     output_end_row = SCREEN_ROWS - 1;
699     clrline(output_current_row, SCREEN_ROWS);
700 sysadm 1.50 break;
701 sysadm 1.26 case KEY_UP:
702 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
703 sysadm 1.21 {
704     break;
705 sysadm 1.26 }
706 sysadm 1.95 line_current -= output_current_row;
707     output_current_row = screen_begin_row;
708 sysadm 1.89 // screen_end_line = screen_begin_line;
709 sysadm 1.39 // prints("\033[T"); // Scroll down 1 line
710 sysadm 1.95 output_end_row = SCREEN_ROWS - 1; // Legacy Fterm only works with this line
711 sysadm 1.26 break;
712 sysadm 1.49 case CR:
713 sysadm 1.78 case KEY_SPACE:
714 sysadm 1.26 case KEY_DOWN:
715 sysadm 1.95 if (line_current + (screen_row_total - (output_current_row - screen_begin_row)) >= display_line_total) // Reach end
716 sysadm 1.26 {
717 sysadm 1.21 break;
718 sysadm 1.26 }
719 sysadm 1.95 line_current += (screen_row_total - (output_current_row - screen_begin_row));
720     output_current_row = screen_row_total;
721     output_end_row = SCREEN_ROWS - 1;
722 sysadm 1.53 moveto(SCREEN_ROWS, 0);
723 sysadm 1.26 clrtoeol();
724 sysadm 1.104 // prints("\033[S"); // Scroll up 1 line
725 sysadm 1.103 prints("\n"); // Legacy Cterm only works with this line
726 sysadm 1.26 break;
727     case KEY_PGUP:
728 sysadm 1.95 if (line_current - output_current_row < 0) // Reach begin
729 sysadm 1.26 {
730 sysadm 1.21 break;
731 sysadm 1.26 }
732 sysadm 1.95 line_current -= ((screen_row_total - 1) + (output_current_row - screen_begin_row));
733 sysadm 1.54 if (line_current < 0)
734 sysadm 1.26 {
735 sysadm 1.54 line_current = 0;
736 sysadm 1.26 }
737 sysadm 1.95 output_current_row = screen_begin_row;
738     output_end_row = SCREEN_ROWS - 1;
739     clrline(output_current_row, SCREEN_ROWS);
740 sysadm 1.26 break;
741     case KEY_PGDN:
742 sysadm 1.95 if (line_current + screen_row_total - (output_current_row - screen_begin_row) >= display_line_total) // Reach end
743 sysadm 1.26 {
744 sysadm 1.21 break;
745     }
746 sysadm 1.95 line_current += (screen_row_total - 1) - (output_current_row - screen_begin_row);
747 sysadm 1.91 if (line_current + screen_row_total > display_line_total) // No enough lines to display
748 sysadm 1.26 {
749 sysadm 1.91 line_current = display_line_total - screen_row_total;
750 sysadm 1.26 }
751 sysadm 1.95 output_current_row = screen_begin_row;
752     output_end_row = SCREEN_ROWS - 1;
753     clrline(output_current_row, SCREEN_ROWS);
754 sysadm 1.26 break;
755 sysadm 1.74 case KEY_ESC:
756 sysadm 1.26 case KEY_LEFT:
757 sysadm 1.27 loop = 0;
758 sysadm 1.26 break;
759     case 'h':
760 sysadm 1.81 if (!show_help) // Not reentrant
761 sysadm 1.37 {
762     break;
763     }
764 sysadm 1.26 // Display help information
765 sysadm 1.37 show_help = 0;
766 sysadm 1.89 display_file(help_filename, 1);
767 sysadm 1.37 show_help = 1;
768 sysadm 1.81 case KEY_F5:
769 sysadm 1.26 // Refresh after display help information
770 sysadm 1.95 line_current -= (output_current_row - screen_begin_row);
771     output_current_row = screen_begin_row;
772     output_end_row = SCREEN_ROWS - 1;
773     clrline(output_current_row, SCREEN_ROWS);
774 sysadm 1.89 break;
775 sysadm 1.81 case 0: // Refresh bottom line
776     break;
777 sysadm 1.26 default:
778     input_ok = 0;
779     break;
780 sysadm 1.21 }
781 sysadm 1.6 }
782 sysadm 1.21
783 sysadm 1.26 continue;
784     }
785 sysadm 1.21
786 sysadm 1.55 len = p_line_offsets[line_current + 1] - p_line_offsets[line_current];
787 sysadm 1.89 if (len >= sizeof(buffer))
788 sysadm 1.26 {
789 sysadm 1.87 log_error("Buffer overflow: len=%ld(%ld - %ld) line=%ld \n",
790 sysadm 1.62 len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
791 sysadm 1.89 len = sizeof(buffer) - 1;
792 sysadm 1.26 }
793 sysadm 1.87 else if (len < 0)
794     {
795     log_error("Incorrect line offsets: len=%ld(%ld - %ld) line=%ld \n",
796     len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
797     len = 0;
798     }
799 sysadm 1.52
800 sysadm 1.55 memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len);
801 sysadm 1.52 buffer[len] = '\0';
802    
803 sysadm 1.95 moveto(output_current_row, 0);
804 sysadm 1.26 clrtoeol();
805     prints("%s", buffer);
806 sysadm 1.54 line_current++;
807 sysadm 1.95 output_current_row++;
808 sysadm 1.26 }
809 sysadm 1.6
810 sysadm 1.41 cleanup:
811 sysadm 1.78 return ch;
812     }
813    
814 sysadm 1.85 static int display_file_key_handler(int *p_key, DISPLAY_CTX *p_ctx)
815 sysadm 1.81 {
816 sysadm 1.85 switch (*p_key)
817 sysadm 1.81 {
818     case 0: // Set msg
819 sysadm 1.85 snprintf(p_ctx->msg, sizeof(p_ctx->msg),
820 sysadm 1.104 "| 返回[\033[32m←\033[33m,\033[32mESC\033[33m] | "
821     "移动[\033[32m↑\033[33m/\033[32m↓\033[33m/\033[32mPgUp\033[33m/\033[32mPgDn\033[33m] | "
822     "帮助[\033[32mh\033[33m] |");
823 sysadm 1.81 break;
824     }
825    
826     return 0;
827     }
828    
829 sysadm 1.89 int display_file(const char *filename, int eof_exit)
830 sysadm 1.78 {
831 sysadm 1.81 int ret;
832 sysadm 1.78 const void *p_shm;
833     size_t data_len;
834     long line_total;
835     const void *p_data;
836     const long *p_line_offsets;
837    
838     if ((p_shm = get_file_shm_readonly(filename, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL)
839     {
840     log_error("get_file_shm(%s) error\n", filename);
841     return KEY_NULL;
842     }
843    
844 sysadm 1.101 if (user_online_update("VIEW_FILE") < 0)
845     {
846     log_error("user_online_update(VIEW_FILE) error\n");
847     }
848    
849 sysadm 1.89 ret = display_data(p_data, line_total, p_line_offsets, eof_exit, display_file_key_handler, DATA_READ_HELP);
850 sysadm 1.78
851 sysadm 1.69 if (detach_file_shm(p_shm) < 0)
852     {
853     log_error("detach_file_shm(%s) error\n", filename);
854     }
855    
856 sysadm 1.81 return ret;
857 sysadm 1.1 }
858 sysadm 1.9
859 sysadm 1.73 int show_top(const char *str_left, const char *str_middle, const char *str_right)
860 sysadm 1.9 {
861 sysadm 1.71 char str_left_f[STR_TOP_LEFT_MAX_LEN + 1];
862     char str_middle_f[STR_TOP_MIDDLE_MAX_LEN + 1];
863     char str_right_f[STR_TOP_RIGHT_MAX_LEN + 1];
864 sysadm 1.70 int str_left_len;
865 sysadm 1.71 int str_middle_len;
866 sysadm 1.70 int str_right_len;
867 sysadm 1.71 int eol;
868 sysadm 1.51 int len;
869 sysadm 1.40
870 sysadm 1.71 strncpy(str_left_f, str_left, sizeof(str_left_f) - 1);
871     str_left_f[sizeof(str_left_f) - 1] = '\0';
872 sysadm 1.105 len = split_line(str_left_f, STR_TOP_LEFT_MAX_LEN / 2, &eol, &str_left_len, 1);
873 sysadm 1.71 str_left_f[len] = '\0';
874    
875     strncpy(str_middle_f, str_middle, sizeof(str_middle_f) - 1);
876     str_middle_f[sizeof(str_middle_f) - 1] = '\0';
877 sysadm 1.105 len = split_line(str_middle, STR_TOP_MIDDLE_MAX_LEN / 2, &eol, &str_middle_len, 1);
878 sysadm 1.71 str_middle_f[len] = '\0';
879    
880 sysadm 1.73 strncpy(str_right_f, str_right, sizeof(str_right_f) - 1);
881 sysadm 1.71 str_right_f[sizeof(str_right_f) - 1] = '\0';
882 sysadm 1.105 len = split_line(str_right, STR_TOP_RIGHT_MAX_LEN / 2, &eol, &str_right_len, 1);
883 sysadm 1.71 str_right_f[len] = '\0';
884 sysadm 1.9
885 sysadm 1.21 moveto(1, 0);
886 sysadm 1.26 clrtoeol();
887 sysadm 1.105 prints("\033[1;44;33m%s\033[37m%*s%s\033[33m%*s%s\033[m",
888     str_left_f, 44 - str_left_len - str_middle_len, "",
889     str_middle_f, 36 - str_right_len, "", str_right_f);
890 sysadm 1.9
891 sysadm 1.21 return 0;
892 sysadm 1.9 }
893    
894 sysadm 1.57 int show_bottom(const char *msg)
895 sysadm 1.9 {
896 sysadm 1.26 char str_time[LINE_BUFFER_LEN];
897 sysadm 1.21 time_t time_online;
898     struct tm *tm_online;
899 sysadm 1.77 char msg_f[LINE_BUFFER_LEN];
900 sysadm 1.72 int eol;
901 sysadm 1.58 int msg_len;
902     int len;
903     int len_username;
904 sysadm 1.88 char str_tm_online[LINE_BUFFER_LEN];
905 sysadm 1.9
906 sysadm 1.26 get_time_str(str_time, sizeof(str_time));
907 sysadm 1.9
908 sysadm 1.76 msg_f[0] = '\0';
909     msg_len = 0;
910 sysadm 1.77 if (msg != NULL)
911 sysadm 1.76 {
912 sysadm 1.77 strncpy(msg_f, msg, sizeof(msg_f) - 1);
913 sysadm 1.76 msg_f[sizeof(msg_f) - 1] = '\0';
914 sysadm 1.97 len = split_line(msg_f, 23, &eol, &msg_len, 1);
915 sysadm 1.77 msg_f[len] = '\0';
916 sysadm 1.76 }
917 sysadm 1.58
918     len_username = (int)strnlen(BBS_username, sizeof(BBS_username));
919    
920 sysadm 1.99 time_online = time(NULL) - BBS_login_tm;
921 sysadm 1.21 tm_online = gmtime(&time_online);
922 sysadm 1.88 if (tm_online->tm_mday > 1)
923     {
924     snprintf(str_tm_online, sizeof(str_tm_online),
925 sysadm 1.104 "\033[36m%2d\033[33m天\033[36m%2d\033[33m时",
926 sysadm 1.89 tm_online->tm_mday - 1, tm_online->tm_hour);
927 sysadm 1.88 }
928     else
929     {
930     snprintf(str_tm_online, sizeof(str_tm_online),
931 sysadm 1.104 "\033[36m%2d\033[33m时\033[36m%2d\033[33m分",
932 sysadm 1.89 tm_online->tm_hour, tm_online->tm_min);
933 sysadm 1.88 }
934 sysadm 1.9
935 sysadm 1.53 moveto(SCREEN_ROWS, 0);
936 sysadm 1.26 clrtoeol();
937 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",
938 sysadm 1.88 str_time, msg_f, 38 - msg_len - len_username, "", BBS_username, str_tm_online);
939 sysadm 1.9
940 sysadm 1.21 return 0;
941 sysadm 1.9 }
942    
943 sysadm 1.21 int show_active_board()
944 sysadm 1.9 {
945 sysadm 1.59 static int line_current = 0;
946 sysadm 1.61 static const void *p_shm = NULL;
947 sysadm 1.59 static size_t data_len;
948     static long line_total;
949 sysadm 1.61 static const void *p_data;
950 sysadm 1.59 static const long *p_line_offsets;
951    
952 sysadm 1.65 static time_t t_last_show = 0;
953     static int line_last = 0;
954    
955 sysadm 1.26 char buffer[LINE_BUFFER_LEN];
956 sysadm 1.59 long int len;
957 sysadm 1.9
958 sysadm 1.61 if (p_shm == NULL)
959 sysadm 1.26 {
960 sysadm 1.69 if ((p_shm = get_file_shm_readonly(DATA_ACTIVE_BOARD, &data_len, &line_total, &p_data, &p_line_offsets)) == NULL)
961 sysadm 1.9 {
962 sysadm 1.59 log_error("get_file_shm(%s) error\n", DATA_ACTIVE_BOARD);
963     return KEY_NULL;
964 sysadm 1.9 }
965 sysadm 1.26 }
966 sysadm 1.21
967 sysadm 1.99 if (time(NULL) - t_last_show >= 10)
968 sysadm 1.65 {
969     line_last = line_current;
970 sysadm 1.99 t_last_show = time(NULL);
971 sysadm 1.65 }
972     else
973     {
974     line_current = line_last;
975     }
976    
977 sysadm 1.64 clrline(2, 2 + ACTIVE_BOARD_HEIGHT);
978 sysadm 1.59
979 sysadm 1.26 for (int i = 0; i < ACTIVE_BOARD_HEIGHT; i++)
980     {
981 sysadm 1.59 len = p_line_offsets[line_current + 1] - p_line_offsets[line_current];
982     if (len >= LINE_BUFFER_LEN)
983 sysadm 1.9 {
984 sysadm 1.62 log_error("buffer overflow: len=%ld(%ld - %ld) line=%ld \n",
985     len, p_line_offsets[line_current + 1], p_line_offsets[line_current], line_current);
986 sysadm 1.59 len = LINE_BUFFER_LEN - 1;
987 sysadm 1.9 }
988 sysadm 1.59
989     memcpy(buffer, (const char *)p_data + p_line_offsets[line_current], (size_t)len);
990     buffer[len] = '\0';
991    
992 sysadm 1.26 moveto(3 + i, 0);
993     prints("%s", buffer);
994 sysadm 1.59
995     line_current++;
996 sysadm 1.60 if (line_current >= line_total)
997 sysadm 1.59 {
998     line_current = 0;
999     break;
1000     }
1001 sysadm 1.9 }
1002 sysadm 1.26
1003 sysadm 1.21 return 0;
1004 sysadm 1.9 }
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