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

Annotation of /lbbs/src/editor.c

Parent Directory Parent Directory | Revision Log Revision Log

Revision 1.61 - (hide annotations)
Wed Dec 17 03:47:00 2025 UTC (3 months ago) by sysadm
Branch: MAIN
Changes since 1.60: +2 -0 lines
Content type: text/x-csrc 
Refine debug log
1 sysadm 1.51 /* SPDX-License-Identifier: GPL-3.0-or-later */
2     /*
3     * editor
4     * - user interactive full-screen text editor
5     *
6 sysadm 1.52 * Copyright (C) 2004-2025 Leaflet <leaflet@leafok.com>
7 sysadm 1.51 */
8 sysadm 1.1
9 sysadm 1.60 #ifdef HAVE_CONFIG_H
10     #include "config.h"
11     #endif
12    
13 sysadm 1.31 #include "bbs.h"
14     #include "common.h"
15 sysadm 1.1 #include "editor.h"
16     #include "io.h"
17     #include "log.h"
18 sysadm 1.43 #include "login.h"
19 sysadm 1.31 #include "memory_pool.h"
20 sysadm 1.1 #include "str_process.h"
21     #include <stdlib.h>
22 sysadm 1.30 #include <string.h>
23 sysadm 1.55 #include <wchar.h>
24 sysadm 1.1 #include <sys/param.h>
25    
26 sysadm 1.54 enum _editor_constant_t
27     {
28     EDITOR_MEM_POOL_LINE_PER_CHUNK = 1000,
29     EDITOR_MEM_POOL_CHUNK_LIMIT = (MAX_EDITOR_DATA_LINES / EDITOR_MEM_POOL_LINE_PER_CHUNK + 1),
30     };
31    
32     static const char EDITOR_ESC_DISPLAY_STR[] = "\033[32m*\033[m";
33 sysadm 1.16
34     static MEMORY_POOL *p_mp_data_line;
35     static MEMORY_POOL *p_mp_editor_data;
36    
37     int editor_memory_pool_init(void)
38     {
39     if (p_mp_data_line != NULL || p_mp_editor_data != NULL)
40     {
41     log_error("Editor mem pool already initialized\n");
42     return -1;
43     }
44    
45     p_mp_data_line = memory_pool_init(MAX_EDITOR_DATA_LINE_LENGTH, EDITOR_MEM_POOL_LINE_PER_CHUNK, EDITOR_MEM_POOL_CHUNK_LIMIT);
46     if (p_mp_data_line == NULL)
47     {
48     log_error("Memory pool init error\n");
49     return -2;
50     }
51    
52     p_mp_editor_data = memory_pool_init(sizeof(EDITOR_DATA), 1, 1);
53 sysadm 1.45 if (p_mp_editor_data == NULL)
54 sysadm 1.16 {
55     log_error("Memory pool init error\n");
56     return -3;
57     }
58    
59     return 0;
60     }
61    
62     void editor_memory_pool_cleanup(void)
63     {
64     if (p_mp_data_line != NULL)
65     {
66     memory_pool_cleanup(p_mp_data_line);
67     p_mp_data_line = NULL;
68     }
69    
70     if (p_mp_editor_data != NULL)
71     {
72     memory_pool_cleanup(p_mp_editor_data);
73     p_mp_editor_data = NULL;
74     }
75     }
76 sysadm 1.12
77 sysadm 1.1 EDITOR_DATA *editor_data_load(const char *p_data)
78     {
79     EDITOR_DATA *p_editor_data;
80 sysadm 1.4 char *p_data_line = NULL;
81 sysadm 1.22 long line_offsets[MAX_EDITOR_DATA_LINES + 1];
82 sysadm 1.1 long current_data_line_length = 0;
83 sysadm 1.14 long i;
84 sysadm 1.57 int j;
85 sysadm 1.1
86     if (p_data == NULL)
87     {
88 sysadm 1.46 log_error("NULL pointer error\n");
89 sysadm 1.1 return NULL;
90     }
91    
92 sysadm 1.16 p_editor_data = memory_pool_alloc(p_mp_editor_data);
93 sysadm 1.1 if (p_editor_data == NULL)
94     {
95 sysadm 1.16 log_error("memory_pool_alloc() error\n");
96 sysadm 1.1 return NULL;
97     }
98    
99 sysadm 1.39 p_editor_data->display_line_total = split_data_lines(p_data, SCREEN_COLS, line_offsets, MAX_EDITOR_DATA_LINES + 1,
100     0, p_editor_data->display_line_widths);
101 sysadm 1.1
102     for (i = 0; i < p_editor_data->display_line_total; i++)
103     {
104     p_editor_data->display_line_lengths[i] = line_offsets[i + 1] - line_offsets[i];
105    
106     if (i == 0 ||
107 sysadm 1.2 current_data_line_length + p_editor_data->display_line_lengths[i] + 1 > MAX_EDITOR_DATA_LINE_LENGTH ||
108 sysadm 1.1 (p_editor_data->display_line_lengths[i - 1] > 0 && p_data[line_offsets[i - 1] + p_editor_data->display_line_lengths[i - 1] - 1] == '\n'))
109     {
110     // Allocate new data line
111 sysadm 1.16 p_data_line = memory_pool_alloc(p_mp_data_line);
112 sysadm 1.4 if (p_data_line == NULL)
113 sysadm 1.1 {
114 sysadm 1.16 log_error("memory_pool_alloc() error: i = %d\n", i);
115 sysadm 1.1 // Cleanup
116 sysadm 1.14 editor_data_cleanup(p_editor_data);
117 sysadm 1.1 return NULL;
118     }
119    
120 sysadm 1.4 p_editor_data->p_display_lines[i] = p_data_line;
121 sysadm 1.2 current_data_line_length = 0;
122 sysadm 1.1 }
123     else
124     {
125     p_editor_data->p_display_lines[i] = p_editor_data->p_display_lines[i - 1] + p_editor_data->display_line_lengths[i - 1];
126     }
127    
128     memcpy(p_editor_data->p_display_lines[i], p_data + line_offsets[i], (size_t)p_editor_data->display_line_lengths[i]);
129     current_data_line_length += p_editor_data->display_line_lengths[i];
130 sysadm 1.19
131 sysadm 1.57 // Convert \t to single space
132     for (j = 0; j < p_editor_data->display_line_lengths[i]; j++)
133     {
134     if (p_editor_data->p_display_lines[i][j] == '\t')
135     {
136     p_editor_data->p_display_lines[i][j] = ' ';
137     }
138     }
139    
140 sysadm 1.19 // Trim \n from last line
141 sysadm 1.20 if (i + 1 == p_editor_data->display_line_total &&
142     p_editor_data->display_line_lengths[i] > 0 &&
143 sysadm 1.19 p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n')
144     {
145     p_editor_data->display_line_lengths[i]--;
146 sysadm 1.39 p_editor_data->display_line_widths[i]--;
147 sysadm 1.19 current_data_line_length--;
148     }
149 sysadm 1.4 p_data_line[current_data_line_length] = '\0';
150 sysadm 1.1 }
151    
152 sysadm 1.26 memset(p_editor_data->p_display_lines + p_editor_data->display_line_total, 0, MAX_EDITOR_DATA_LINES - (size_t)p_editor_data->display_line_total);
153 sysadm 1.4
154 sysadm 1.1 return p_editor_data;
155     }
156    
157     long editor_data_save(const EDITOR_DATA *p_editor_data, char *p_data, size_t buf_len)
158     {
159     long current_pos = 0;
160     long i;
161    
162     if (p_editor_data == NULL || p_data == NULL)
163     {
164 sysadm 1.46 log_error("NULL pointer error\n");
165 sysadm 1.1 return -1;
166     }
167    
168     for (i = 0; i < p_editor_data->display_line_total; i++)
169     {
170     if (current_pos + p_editor_data->display_line_lengths[i] + 1 > buf_len)
171     {
172     log_error("Data buffer not longer enough %d > %d\n", current_pos + p_editor_data->display_line_lengths[i] + 1, buf_len);
173     p_data[current_pos] = '\0';
174     return -2;
175     }
176    
177     memcpy(p_data + current_pos, p_editor_data->p_display_lines[i], (size_t)p_editor_data->display_line_lengths[i]);
178     current_pos += p_editor_data->display_line_lengths[i];
179     }
180    
181     p_data[current_pos] = '\0';
182    
183     return current_pos;
184     }
185    
186     void editor_data_cleanup(EDITOR_DATA *p_editor_data)
187     {
188 sysadm 1.14 char *p_data_line = NULL;
189 sysadm 1.1 long i;
190    
191     if (p_editor_data == NULL)
192     {
193     return;
194     }
195    
196 sysadm 1.14 for (i = 0; i < p_editor_data->display_line_total; i++)
197     {
198     if (p_data_line == NULL)
199     {
200     p_data_line = p_editor_data->p_display_lines[i];
201     }
202    
203     if (p_editor_data->display_line_lengths[i] > 0 &&
204     p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n')
205     {
206 sysadm 1.16 memory_pool_free(p_mp_data_line, p_data_line);
207 sysadm 1.14 p_data_line = NULL;
208     }
209     }
210    
211     if (p_data_line != NULL)
212 sysadm 1.1 {
213 sysadm 1.16 memory_pool_free(p_mp_data_line, p_data_line);
214 sysadm 1.1 }
215    
216 sysadm 1.16 memory_pool_free(p_mp_editor_data, p_editor_data);
217 sysadm 1.1 }
218    
219 sysadm 1.3 int editor_data_insert(EDITOR_DATA *p_editor_data, long *p_display_line, long *p_offset,
220 sysadm 1.2 const char *str, int str_len, long *p_last_updated_line)
221     {
222 sysadm 1.3 long display_line = *p_display_line;
223     long offset = *p_offset;
224 sysadm 1.4 char *p_data_line = NULL;
225 sysadm 1.2 long len_data_line;
226     long offset_data_line;
227     long last_display_line; // of data line
228 sysadm 1.4 long line_offsets[MAX_EDITOR_DATA_LINE_LENGTH + 1];
229 sysadm 1.39 int line_widths[MAX_EDITOR_DATA_LINE_LENGTH + 1];
230 sysadm 1.4 long split_line_total;
231 sysadm 1.32 long i;
232 sysadm 1.15 int len;
233     int eol;
234     int display_len;
235 sysadm 1.2
236     if (p_editor_data == NULL || p_last_updated_line == NULL)
237     {
238 sysadm 1.46 log_error("NULL pointer error\n");
239 sysadm 1.2 return -1;
240     }
241    
242     // Get length of current data line
243     len_data_line = 0;
244     p_data_line = p_editor_data->p_display_lines[display_line];
245     for (i = display_line - 1; i >= 0; i--)
246     {
247     if (p_editor_data->display_line_lengths[i] > 0 &&
248     p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of prior data line
249     {
250     break;
251     }
252    
253     len_data_line += p_editor_data->display_line_lengths[i];
254     p_data_line = p_editor_data->p_display_lines[i];
255     }
256     offset_data_line = len_data_line + offset;
257     last_display_line = p_editor_data->display_line_total - 1;
258     for (i = display_line; i < p_editor_data->display_line_total; i++)
259     {
260     len_data_line += p_editor_data->display_line_lengths[i];
261    
262     if (p_editor_data->display_line_lengths[i] > 0 &&
263     p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of current data line
264     {
265     last_display_line = i;
266     break;
267     }
268     }
269    
270     // Split current data line if over-length
271 sysadm 1.37 if (len_data_line + str_len + 2 > MAX_EDITOR_DATA_LINE_LENGTH || str[0] == CR)
272 sysadm 1.2 {
273 sysadm 1.14 if (p_editor_data->display_line_total >= MAX_EDITOR_DATA_LINES)
274 sysadm 1.2 {
275 sysadm 1.29 #ifdef _DEBUG
276     log_error("Split line error, display_line_total(%ld) reach limit(%d)\n",
277     p_editor_data->display_line_total, MAX_EDITOR_DATA_LINES);
278     #endif
279    
280 sysadm 1.2 return -2;
281     }
282    
283     // Allocate new data line
284 sysadm 1.16 p_data_line = memory_pool_alloc(p_mp_data_line);
285 sysadm 1.4 if (p_data_line == NULL)
286 sysadm 1.2 {
287 sysadm 1.16 log_error("memory_pool_alloc() error\n");
288 sysadm 1.2 return -2;
289     }
290 sysadm 1.3
291 sysadm 1.37 if (offset_data_line + str_len + 2 >= MAX_EDITOR_DATA_LINE_LENGTH || str[0] == CR)
292 sysadm 1.2 {
293 sysadm 1.6 if (str[0] == CR)
294     {
295     str_len = 0;
296     }
297 sysadm 1.3
298 sysadm 1.4 // Copy str to new data line
299     memcpy(p_data_line, str, (size_t)str_len);
300    
301     // Copy rest part of current data line to new data line
302     memcpy(p_data_line + str_len,
303 sysadm 1.2 p_editor_data->p_display_lines[display_line] + offset,
304 sysadm 1.4 (size_t)(len_data_line - offset_data_line));
305    
306     p_data_line[str_len + len_data_line - offset_data_line] = '\0';
307 sysadm 1.2
308     // Add line ending to current display line (data line)
309     p_editor_data->p_display_lines[display_line][offset] = '\n';
310     p_editor_data->p_display_lines[display_line][offset + 1] = '\0';
311     p_editor_data->display_line_lengths[display_line] = offset + 1;
312 sysadm 1.4
313     *p_display_line = display_line + 1;
314     *p_offset = str_len;
315 sysadm 1.2 }
316 sysadm 1.6 else
317     {
318     // Copy rest part of current data line to new data line
319     memcpy(p_data_line,
320     p_editor_data->p_display_lines[display_line] + offset,
321     (size_t)(len_data_line - offset_data_line));
322    
323     p_data_line[len_data_line - offset_data_line] = '\0';
324    
325     // Append str to current display line
326     memcpy(p_editor_data->p_display_lines[display_line] + offset, str, (size_t)str_len);
327    
328     // Add line ending to current display line (data line)
329     p_editor_data->p_display_lines[display_line][offset + str_len] = '\n';
330     p_editor_data->p_display_lines[display_line][offset + str_len + 1] = '\0';
331     p_editor_data->display_line_lengths[display_line] = offset + str_len + 1;
332    
333     *p_display_line = display_line;
334     *p_offset = offset + str_len;
335     }
336 sysadm 1.2
337 sysadm 1.39 // Update display width of current display line
338     len = split_line(p_editor_data->p_display_lines[display_line], SCREEN_COLS, &eol, &display_len, 0);
339     p_editor_data->display_line_widths[display_line] = display_len;
340    
341 sysadm 1.4 split_line_total = last_display_line - display_line + 3;
342    
343     // Set start display_line for spliting new data line
344 sysadm 1.2 display_line++;
345 sysadm 1.4
346     *p_last_updated_line = p_editor_data->display_line_total;
347 sysadm 1.2 }
348 sysadm 1.4 else // insert str into current data line at offset_data_line
349 sysadm 1.2 {
350 sysadm 1.4 memmove(p_data_line + offset_data_line + str_len, p_data_line + offset_data_line, (size_t)(len_data_line - offset_data_line));
351     memcpy(p_data_line + offset_data_line, str, (size_t)str_len);
352     p_data_line[len_data_line + str_len] = '\0';
353 sysadm 1.3
354 sysadm 1.4 // Set p_data_line to head of current display line
355     p_data_line = p_editor_data->p_display_lines[display_line];
356     split_line_total = last_display_line - display_line + 3;
357 sysadm 1.3
358 sysadm 1.4 *p_display_line = display_line;
359     *p_offset = offset + str_len;
360 sysadm 1.2 }
361    
362 sysadm 1.4 // Split current data line since beginning of current display line
363 sysadm 1.39 split_line_total = split_data_lines(p_data_line, SCREEN_COLS, line_offsets, split_line_total, 0, line_widths);
364 sysadm 1.2
365 sysadm 1.4 for (i = 0; i < split_line_total; i++)
366 sysadm 1.2 {
367 sysadm 1.4 if (display_line + i > last_display_line)
368 sysadm 1.2 {
369 sysadm 1.4 // Insert blank display line after last_display_line
370     if (p_editor_data->display_line_total >= MAX_EDITOR_DATA_LINES)
371     {
372 sysadm 1.29 #ifdef _DEBUG
373     log_error("display_line_total over limit %d >= %d\n", p_editor_data->display_line_total, MAX_EDITOR_DATA_LINES);
374     #endif
375    
376 sysadm 1.15 // Terminate prior display line with \n, to avoid error on cleanup
377     if (display_line + i - 1 >= 0 && p_editor_data->display_line_lengths[display_line + i - 1] > 0)
378     {
379 sysadm 1.24 len = split_line(p_editor_data->p_display_lines[display_line + i - 1], SCREEN_COLS - 1, &eol, &display_len, 0);
380 sysadm 1.15 p_editor_data->p_display_lines[display_line + i - 1][len] = '\n';
381     p_editor_data->p_display_lines[display_line + i - 1][len + 1] = '\0';
382     p_editor_data->display_line_lengths[display_line + i - 1] = len + 1;
383 sysadm 1.39 p_editor_data->display_line_widths[display_line + i - 1] = display_len;
384 sysadm 1.15 }
385     if (*p_offset >= p_editor_data->display_line_lengths[*p_display_line])
386     {
387     *p_offset = p_editor_data->display_line_lengths[*p_display_line] - 1;
388     }
389     break;
390 sysadm 1.4 }
391 sysadm 1.32
392     // for (j = p_editor_data->display_line_total; j > last_display_line + 1; j--)
393     // {
394     // p_editor_data->p_display_lines[j] = p_editor_data->p_display_lines[j - 1];
395     // p_editor_data->display_line_lengths[j] = p_editor_data->display_line_lengths[j - 1];
396 sysadm 1.39 // p_editor_data->display_line_widths[j] = p_editor_data->display_line_widths[j - 1];
397 sysadm 1.32 // }
398     memmove(p_editor_data->p_display_lines + last_display_line + 2,
399     p_editor_data->p_display_lines + last_display_line + 1,
400     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
401     sizeof(p_editor_data->p_display_lines[last_display_line + 1]));
402     memmove(p_editor_data->display_line_lengths + last_display_line + 2,
403     p_editor_data->display_line_lengths + last_display_line + 1,
404     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
405     sizeof(p_editor_data->display_line_lengths[last_display_line + 1]));
406 sysadm 1.39 memmove(p_editor_data->display_line_widths + last_display_line + 2,
407     p_editor_data->display_line_widths + last_display_line + 1,
408     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
409     sizeof(p_editor_data->display_line_widths[last_display_line + 1]));
410 sysadm 1.32
411 sysadm 1.4 last_display_line++;
412 sysadm 1.32 *p_last_updated_line = p_editor_data->display_line_total;
413 sysadm 1.4 (p_editor_data->display_line_total)++;
414 sysadm 1.2 }
415    
416 sysadm 1.4 p_editor_data->display_line_lengths[display_line + i] = line_offsets[i + 1] - line_offsets[i];
417 sysadm 1.39 p_editor_data->display_line_widths[display_line + i] = line_widths[i];
418 sysadm 1.4 p_editor_data->p_display_lines[display_line + i] =
419     (i == 0
420     ? p_data_line
421     : (p_editor_data->p_display_lines[display_line + i - 1] + p_editor_data->display_line_lengths[display_line + i - 1]));
422 sysadm 1.2
423 sysadm 1.4 if (p_editor_data->display_line_lengths[display_line + i] > 0 &&
424     p_editor_data->p_display_lines[display_line + i][p_editor_data->display_line_lengths[display_line + i] - 1] == '\n')
425 sysadm 1.3 {
426 sysadm 1.4 break;
427 sysadm 1.3 }
428 sysadm 1.4 }
429 sysadm 1.3
430 sysadm 1.7 *p_last_updated_line = MAX(display_line + MIN(i, split_line_total - 1), *p_last_updated_line);
431 sysadm 1.2
432 sysadm 1.14 if (*p_offset >= p_editor_data->display_line_lengths[*p_display_line])
433 sysadm 1.3 {
434 sysadm 1.18 if (*p_display_line + 1 < p_editor_data->display_line_total)
435 sysadm 1.15 {
436 sysadm 1.18 *p_offset -= p_editor_data->display_line_lengths[*p_display_line];
437 sysadm 1.15 (*p_display_line)++;
438     }
439 sysadm 1.22 }
440    
441     // Prevent the last display line from being over-length
442     if (p_editor_data->display_line_total == MAX_EDITOR_DATA_LINES)
443     {
444 sysadm 1.24 len = split_line(p_editor_data->p_display_lines[p_editor_data->display_line_total - 1], SCREEN_COLS - 1, &eol, &display_len, 0);
445 sysadm 1.22 p_editor_data->p_display_lines[p_editor_data->display_line_total - 1][len] = '\0';
446     p_editor_data->display_line_lengths[p_editor_data->display_line_total - 1] = len;
447 sysadm 1.39 p_editor_data->display_line_widths[p_editor_data->display_line_total - 1] = display_len;
448 sysadm 1.22 if (*p_display_line + 1 >= p_editor_data->display_line_total)
449 sysadm 1.20 {
450 sysadm 1.22 *p_offset = MIN(*p_offset, len);
451     *p_display_line = p_editor_data->display_line_total - 1;
452 sysadm 1.20 }
453 sysadm 1.3 }
454    
455 sysadm 1.4 return 0;
456 sysadm 1.2 }
457    
458 sysadm 1.23 int editor_data_delete(EDITOR_DATA *p_editor_data, long *p_display_line, long *p_offset,
459 sysadm 1.49 long *p_last_updated_line, int del_line)
460 sysadm 1.2 {
461 sysadm 1.23 long display_line = *p_display_line;
462     long offset = *p_offset;
463 sysadm 1.7 char *p_data_line = NULL;
464     long len_data_line;
465     long offset_data_line;
466     long last_display_line; // of data line
467     long line_offsets[MAX_EDITOR_DATA_LINE_LENGTH + 1];
468 sysadm 1.39 int line_widths[MAX_EDITOR_DATA_LINE_LENGTH + 1];
469 sysadm 1.7 long split_line_total;
470     long i, j;
471     int str_len = 0;
472 sysadm 1.39 char c;
473 sysadm 1.7
474     if (p_editor_data == NULL || p_last_updated_line == NULL)
475     {
476 sysadm 1.46 log_error("NULL pointer error\n");
477 sysadm 1.7 return -1;
478     }
479    
480     // Get length of current data line
481     len_data_line = 0;
482     p_data_line = p_editor_data->p_display_lines[display_line];
483     for (i = display_line - 1; i >= 0; i--)
484     {
485     if (p_editor_data->display_line_lengths[i] > 0 &&
486     p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of prior data line
487     {
488     break;
489     }
490    
491     len_data_line += p_editor_data->display_line_lengths[i];
492     p_data_line = p_editor_data->p_display_lines[i];
493     }
494     offset_data_line = len_data_line + offset;
495     last_display_line = p_editor_data->display_line_total - 1;
496     for (i = display_line; i < p_editor_data->display_line_total; i++)
497     {
498     len_data_line += p_editor_data->display_line_lengths[i];
499    
500     if (p_editor_data->display_line_lengths[i] > 0 &&
501     p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of current data line
502     {
503     last_display_line = i;
504     break;
505     }
506     }
507    
508 sysadm 1.18 if (offset_data_line >= len_data_line) // end-of-line
509     {
510     return 0;
511     }
512    
513 sysadm 1.7 // Check str to be deleted
514 sysadm 1.49 if (del_line)
515     {
516     str_len = (int)(p_editor_data->display_line_lengths[display_line] - offset);
517     }
518     else if (p_data_line[offset_data_line] > 0 && p_data_line[offset_data_line] < 127)
519 sysadm 1.7 {
520     str_len = 1;
521     }
522 sysadm 1.48 else if (p_data_line[offset_data_line] & 0x80) // head of multi-byte character
523 sysadm 1.7 {
524 sysadm 1.39 str_len = 1;
525 sysadm 1.48 c = (p_data_line[offset_data_line] & 0x70) << 1;
526     while (c & 0x80)
527 sysadm 1.39 {
528     str_len++;
529 sysadm 1.48 c = (c & 0x7f) << 1;
530 sysadm 1.39 }
531 sysadm 1.7 }
532     else
533     {
534 sysadm 1.18 log_error("Some strange character at display_line %ld, offset %ld: %d %d\n",
535     display_line, offset, p_data_line[offset_data_line], p_data_line[offset_data_line + 1]);
536 sysadm 1.10 str_len = 1;
537 sysadm 1.7 }
538    
539     // Current display line is (almost) empty
540     if (offset_data_line + str_len > len_data_line ||
541 sysadm 1.49 (offset_data_line + str_len == len_data_line &&
542     p_data_line[del_line ? len_data_line - 1 : offset_data_line] == '\n'))
543 sysadm 1.7 {
544 sysadm 1.9 if (display_line + 1 >= p_editor_data->display_line_total) // No additional display line (data line)
545     {
546     return 0;
547     }
548    
549     len_data_line = 0; // Next data line
550     last_display_line = p_editor_data->display_line_total - 1;
551     for (i = display_line + 1; i < p_editor_data->display_line_total; i++)
552     {
553     len_data_line += p_editor_data->display_line_lengths[i];
554    
555     if (p_editor_data->display_line_lengths[i] > 0 &&
556     p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of current data line
557     {
558     last_display_line = i;
559     break;
560     }
561     }
562    
563     if (offset_data_line + len_data_line + 1 > MAX_EDITOR_DATA_LINE_LENGTH) // No enough buffer to merge current data line with next data line
564     {
565     return 0;
566     }
567    
568     // Append next data line to current one
569     memcpy(p_data_line + offset_data_line, p_editor_data->p_display_lines[display_line + 1], (size_t)len_data_line);
570     p_data_line[offset_data_line + len_data_line] = '\0';
571    
572     // Recycle next data line
573 sysadm 1.16 memory_pool_free(p_mp_data_line, p_editor_data->p_display_lines[display_line + 1]);
574 sysadm 1.9 }
575     else
576     {
577     memmove(p_data_line + offset_data_line, p_data_line + offset_data_line + str_len, (size_t)(len_data_line - offset_data_line - str_len));
578     p_data_line[len_data_line - str_len] = '\0';
579     len_data_line -= str_len;
580 sysadm 1.7 }
581    
582     // Set p_data_line to head of current display line
583     p_data_line = p_editor_data->p_display_lines[display_line];
584     split_line_total = last_display_line - display_line + 2;
585    
586     // Split current data line since beginning of current display line
587 sysadm 1.39 split_line_total = split_data_lines(p_data_line, SCREEN_COLS, line_offsets, split_line_total, 0, line_widths);
588 sysadm 1.7
589     for (i = 0; i < split_line_total; i++)
590     {
591     p_editor_data->display_line_lengths[display_line + i] = line_offsets[i + 1] - line_offsets[i];
592 sysadm 1.39 p_editor_data->display_line_widths[display_line + i] = line_widths[i];
593 sysadm 1.7 p_editor_data->p_display_lines[display_line + i] =
594     (i == 0
595     ? p_data_line
596     : (p_editor_data->p_display_lines[display_line + i - 1] + p_editor_data->display_line_lengths[display_line + i - 1]));
597    
598     if (p_editor_data->display_line_lengths[display_line + i] > 0 &&
599     p_editor_data->p_display_lines[display_line + i][p_editor_data->display_line_lengths[display_line + i] - 1] == '\n')
600     {
601     break;
602     }
603     }
604    
605     *p_last_updated_line = display_line + MIN(i, split_line_total - 1);
606    
607 sysadm 1.18 if (*p_last_updated_line < last_display_line)
608 sysadm 1.7 {
609     // Remove redundant display line after last_display_line
610 sysadm 1.32 // for (j = last_display_line + 1; j < p_editor_data->display_line_total; j++)
611     // {
612     // p_editor_data->p_display_lines[j - (last_display_line - *p_last_updated_line)] = p_editor_data->p_display_lines[j];
613     // p_editor_data->display_line_lengths[j - (last_display_line - *p_last_updated_line)] = p_editor_data->display_line_lengths[j];
614 sysadm 1.39 // p_editor_data->display_line_widths[j - (last_display_line - *p_last_updated_line)] = p_editor_data->display_line_widths[j];
615 sysadm 1.32 // }
616     memmove(p_editor_data->p_display_lines + *p_last_updated_line + 1,
617     p_editor_data->p_display_lines + last_display_line + 1,
618     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
619     sizeof(p_editor_data->p_display_lines[last_display_line + 1]));
620     memmove(p_editor_data->display_line_lengths + *p_last_updated_line + 1,
621     p_editor_data->display_line_lengths + last_display_line + 1,
622     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
623     sizeof(p_editor_data->display_line_lengths[last_display_line + 1]));
624 sysadm 1.39 memmove(p_editor_data->display_line_widths + *p_last_updated_line + 1,
625     p_editor_data->display_line_widths + last_display_line + 1,
626     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
627     sizeof(p_editor_data->display_line_widths[last_display_line + 1]));
628 sysadm 1.7
629 sysadm 1.18 j = p_editor_data->display_line_total;
630     (p_editor_data->display_line_total) -= (last_display_line - *p_last_updated_line);
631     *p_last_updated_line = MAX(j - 1, *p_last_updated_line);
632 sysadm 1.7 }
633    
634 sysadm 1.23 // Return real offset
635     *p_offset = offset;
636    
637 sysadm 1.9 return str_len;
638 sysadm 1.2 }
639    
640     static int editor_display_key_handler(int *p_key, EDITOR_CTX *p_ctx)
641 sysadm 1.1 {
642     switch (*p_key)
643     {
644     case 0: // Set msg
645     snprintf(p_ctx->msg, sizeof(p_ctx->msg),
646 sysadm 1.55 "| 退出[\033[32mCtrl-W\033[33m] | [\033[32m%s\033[33m]",
647     (UTF8_fixed_width ? "定宽" : "变宽"));
648 sysadm 1.1 break;
649 sysadm 1.24 case KEY_CSI:
650     *p_key = KEY_ESC;
651     break;
652 sysadm 1.1 }
653    
654     return 0;
655     }
656    
657     int editor_display(EDITOR_DATA *p_editor_data)
658     {
659     static int show_help = 1;
660     char buffer[MAX_EDITOR_DATA_LINE_LENGTH];
661 sysadm 1.2 EDITOR_CTX ctx;
662 sysadm 1.1 int ch = 0;
663 sysadm 1.55 char input_str[5];
664 sysadm 1.56 int str_len = 0;
665 sysadm 1.55 wchar_t wcs[2];
666 sysadm 1.56 int wc_len;
667 sysadm 1.39 char c;
668 sysadm 1.3 int input_ok;
669     const int screen_begin_row = 1;
670 sysadm 1.14 const int screen_row_total = SCREEN_ROWS - screen_begin_row;
671     int output_current_row = screen_begin_row;
672     int output_end_row = SCREEN_ROWS - 1;
673 sysadm 1.1 long int line_current = 0;
674     long int len;
675     int loop;
676     int eol, display_len;
677     long row_pos = 1, col_pos = 1;
678 sysadm 1.3 long display_line_in, offset_in;
679     long display_line_out, offset_out;
680     int scroll_rows;
681 sysadm 1.2 long last_updated_line = 0;
682 sysadm 1.8 int key_insert = 1;
683 sysadm 1.12 int i, j;
684     char *p_str;
685 sysadm 1.49 int del_line;
686 sysadm 1.58 int tab_width = 0;
687 sysadm 1.1
688 sysadm 1.14 clrline(output_current_row, SCREEN_ROWS);
689 sysadm 1.1
690     // update msg_ext with extended key handler
691     if (editor_display_key_handler(&ch, &ctx) != 0)
692     {
693     return ch;
694     }
695    
696 sysadm 1.35 for (loop = 1; !SYS_server_exit && loop;)
697 sysadm 1.1 {
698 sysadm 1.14 if (line_current >= p_editor_data->display_line_total || output_current_row > output_end_row)
699 sysadm 1.1 {
700 sysadm 1.14 ctx.line_cursor = line_current - output_current_row + row_pos + 1;
701 sysadm 1.1
702     snprintf(buffer, sizeof(buffer),
703 sysadm 1.2 "\033[1;44;33m[\033[32m%ld\033[33m;\033[32m%ld\033[33m] "
704 sysadm 1.39 "第\033[32m%ld\033[33m/\033[32m%ld\033[33m行 [\033[32m%s\033[33m] "
705 sysadm 1.2 "%s",
706     row_pos, col_pos,
707     ctx.line_cursor, p_editor_data->display_line_total,
708 sysadm 1.39 key_insert ? "插入" : "替换",
709 sysadm 1.1 ctx.msg);
710    
711 sysadm 1.24 len = split_line(buffer, SCREEN_COLS, &eol, &display_len, 1);
712 sysadm 1.1 for (; display_len < SCREEN_COLS; display_len++)
713     {
714     buffer[len++] = ' ';
715     }
716     buffer[len] = '\0';
717     strncat(buffer, "\033[m", sizeof(buffer) - 1 - strnlen(buffer, sizeof(buffer)));
718    
719     moveto(SCREEN_ROWS, 0);
720     prints("%s", buffer);
721    
722     moveto((int)row_pos, (int)col_pos);
723     iflush();
724    
725 sysadm 1.58 tab_width = 0;
726 sysadm 1.25 str_len = 0;
727 sysadm 1.53 ch = igetch_t(BBS_max_user_idle_time);
728 sysadm 1.33 while (!SYS_server_exit)
729 sysadm 1.1 {
730 sysadm 1.47 if (ch != KEY_NULL && ch != KEY_TIMEOUT)
731     {
732     BBS_last_access_tm = time(NULL);
733     }
734    
735 sysadm 1.1 // extended key handler
736     if (editor_display_key_handler(&ch, &ctx) != 0)
737     {
738     goto cleanup;
739     }
740    
741 sysadm 1.58 if (ch == '\t')
742     {
743     ch = ' ';
744     tab_width = TAB_SIZE - ((int)(col_pos - 1) % TAB_SIZE) - 1;
745     }
746    
747 sysadm 1.48 if (ch < 256 && (ch & 0x80)) // head of multi-byte character
748 sysadm 1.3 {
749     str_len = 0;
750 sysadm 1.48 c = (char)(ch & 0xf0);
751     while (c & 0x80)
752 sysadm 1.39 {
753     input_str[str_len] = (char)(ch - 256);
754     str_len++;
755 sysadm 1.48 c = (c & 0x7f) << 1;
756 sysadm 1.39
757 sysadm 1.48 if ((c & 0x80) == 0) // Input completed
758 sysadm 1.39 {
759     break;
760     }
761    
762     // Expect additional bytes of input
763     ch = igetch(100); // 0.1 second
764     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
765     {
766 sysadm 1.40 #ifdef _DEBUG
767 sysadm 1.39 log_error("Ignore %d bytes of incomplete UTF8 character\n", str_len);
768 sysadm 1.40 #endif
769 sysadm 1.39 str_len = 0;
770     break;
771     }
772     }
773 sysadm 1.55 input_str[str_len] = '\0';
774 sysadm 1.3 }
775    
776 sysadm 1.39 if ((ch >= 32 && ch < 127) || str_len >= 2 || // Printable character or multi-byte character
777     ch == CR || ch == KEY_ESC) // Special character
778 sysadm 1.2 {
779 sysadm 1.43 // Refresh current action while user input
780     if (user_online_update(NULL) < 0)
781     {
782     log_error("user_online_update(NULL) error\n");
783     }
784    
785 sysadm 1.21 if (str_len == 0) // ch >= 32 && ch < 127
786 sysadm 1.3 {
787 sysadm 1.4 input_str[0] = (char)ch;
788 sysadm 1.3 str_len = 1;
789     }
790    
791 sysadm 1.14 display_line_in = line_current - output_current_row + row_pos;
792 sysadm 1.39 offset_in = split_line(p_editor_data->p_display_lines[display_line_in], (int)col_pos - 1, &eol, &display_len, 0);
793 sysadm 1.3 display_line_out = display_line_in;
794     offset_out = offset_in;
795 sysadm 1.2
796 sysadm 1.32 last_updated_line = display_line_in;
797    
798 sysadm 1.8 if (!key_insert) // overwrite
799     {
800 sysadm 1.23 if (editor_data_delete(p_editor_data, &display_line_out, &offset_out,
801 sysadm 1.49 &last_updated_line, 0) < 0)
802 sysadm 1.8 {
803     log_error("editor_data_delete() error\n");
804     }
805     }
806    
807 sysadm 1.3 if (editor_data_insert(p_editor_data, &display_line_out, &offset_out,
808 sysadm 1.4 input_str, str_len, &last_updated_line) < 0)
809 sysadm 1.2 {
810 sysadm 1.14 log_error("editor_data_insert(str_len=%d) error\n", str_len);
811 sysadm 1.2 }
812     else
813     {
814 sysadm 1.14 output_end_row = MIN(SCREEN_ROWS - 1, output_current_row + (int)(last_updated_line - line_current));
815     line_current -= (output_current_row - row_pos);
816     output_current_row = (int)row_pos;
817 sysadm 1.2
818 sysadm 1.14 scroll_rows = MAX(0, (int)(display_line_out - display_line_in) - (output_end_row - output_current_row));
819 sysadm 1.2
820 sysadm 1.3 if (scroll_rows > 0)
821 sysadm 1.2 {
822 sysadm 1.3 moveto(SCREEN_ROWS, 0);
823     clrtoeol();
824     for (i = 0; i < scroll_rows; i++)
825     {
826 sysadm 1.36 // prints("\033[S"); // Scroll up 1 line
827     prints("\n"); // Legacy Cterm only works with this line
828 sysadm 1.3 }
829 sysadm 1.2
830 sysadm 1.14 output_current_row -= scroll_rows;
831     if (output_current_row < screen_begin_row)
832 sysadm 1.2 {
833 sysadm 1.14 line_current += (screen_begin_row - output_current_row);
834     output_current_row = screen_begin_row;
835 sysadm 1.2 }
836 sysadm 1.14 row_pos = output_end_row;
837 sysadm 1.3 }
838     else // if (scroll_lines == 0)
839     {
840     row_pos += (display_line_out - display_line_in);
841 sysadm 1.2 }
842 sysadm 1.39
843     if (offset_out != offset_in)
844     {
845     if (display_line_out != display_line_in)
846     {
847     col_pos = 1;
848     }
849 sysadm 1.42 if (offset_out > 0)
850 sysadm 1.39 {
851 sysadm 1.55 if (mbstowcs(wcs, input_str, 1) == (size_t)-1)
852     {
853     log_error("mbstowcs() error\n");
854     }
855     col_pos += (str_len == 1 ? 1 : (UTF8_fixed_width ? 2 : wcwidth(wcs[0])));
856 sysadm 1.39 }
857     }
858 sysadm 1.11 }
859 sysadm 1.3
860 sysadm 1.25 if (display_line_out != display_line_in) // Output on line change
861     {
862     break;
863     }
864    
865 sysadm 1.58 if (ch == ' ' && tab_width > 0)
866     {
867     tab_width--;
868     }
869     else
870 sysadm 1.25 {
871 sysadm 1.58 ch = igetch(0);
872     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Output if no futher input
873     {
874     break;
875     }
876 sysadm 1.25 }
877    
878 sysadm 1.21 str_len = 0;
879 sysadm 1.11 continue;
880 sysadm 1.2 }
881 sysadm 1.49 else if (ch == KEY_DEL || ch == BACKSPACE || ch == Ctrl('K') || ch == Ctrl('Y')) // Del
882 sysadm 1.2 {
883 sysadm 1.43 // Refresh current action while user input
884     if (user_online_update(NULL) < 0)
885     {
886     log_error("user_online_update(NULL) error\n");
887     }
888    
889 sysadm 1.49 del_line = 0;
890    
891 sysadm 1.9 if (ch == BACKSPACE)
892     {
893 sysadm 1.18 if (line_current - output_current_row + row_pos <= 0 && col_pos <= 1) // Forbidden
894     {
895 sysadm 1.34 break; // force output prior operation result if any
896 sysadm 1.18 }
897    
898 sysadm 1.39 offset_in = split_line(p_editor_data->p_display_lines[line_current - output_current_row + row_pos],
899     (int)col_pos - 1, &eol, &display_len, 0);
900 sysadm 1.55 col_pos = display_len;
901 sysadm 1.14 if (col_pos < 1 && line_current - output_current_row + row_pos >= 0)
902 sysadm 1.9 {
903     row_pos--;
904 sysadm 1.39 col_pos = MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]);
905 sysadm 1.9 }
906     }
907 sysadm 1.49 else if (ch == Ctrl('K'))
908     {
909     del_line = 1;
910     }
911     else if (ch == Ctrl('Y'))
912     {
913     col_pos = 1;
914     del_line = 1;
915     }
916 sysadm 1.2
917 sysadm 1.23 display_line_in = line_current - output_current_row + row_pos;
918 sysadm 1.39 offset_in = split_line(p_editor_data->p_display_lines[display_line_in], (int)col_pos - 1, &eol, &display_len, 0);
919 sysadm 1.23 display_line_out = display_line_in;
920     offset_out = offset_in;
921    
922     if ((str_len = editor_data_delete(p_editor_data, &display_line_out, &offset_out,
923 sysadm 1.49 &last_updated_line, del_line)) < 0)
924 sysadm 1.2 {
925 sysadm 1.49 log_error("editor_data_delete() error: %d\n", str_len);
926 sysadm 1.2 }
927     else
928     {
929 sysadm 1.39 col_pos = display_len + 1; // Set col_pos to accurate pos
930 sysadm 1.9
931 sysadm 1.14 output_end_row = MIN(SCREEN_ROWS - 1, output_current_row + (int)(last_updated_line - line_current));
932     line_current -= (output_current_row - row_pos);
933     output_current_row = (int)row_pos;
934 sysadm 1.9
935 sysadm 1.14 if (output_current_row < screen_begin_row) // row_pos <= 0
936 sysadm 1.9 {
937 sysadm 1.14 output_current_row = screen_begin_row;
938 sysadm 1.9 row_pos = screen_begin_row;
939 sysadm 1.14 output_end_row = SCREEN_ROWS - 1;
940     }
941    
942     // Exceed end
943     if (line_current + (screen_row_total - output_current_row) >= p_editor_data->display_line_total &&
944     p_editor_data->display_line_total > screen_row_total)
945     {
946     scroll_rows = (int)((line_current - (output_current_row - screen_begin_row)) -
947     (p_editor_data->display_line_total - screen_row_total));
948    
949     line_current = p_editor_data->display_line_total - screen_row_total;
950     row_pos += scroll_rows;
951     output_current_row = screen_begin_row;
952     output_end_row = SCREEN_ROWS - 1;
953 sysadm 1.9 }
954 sysadm 1.18
955     clrline(output_current_row, output_end_row);
956 sysadm 1.2 }
957    
958 sysadm 1.25 if (display_line_out != display_line_in) // Output on line change
959     {
960     break;
961     }
962    
963     ch = igetch(0);
964     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Output if no futher input
965     {
966     break;
967     }
968    
969 sysadm 1.21 str_len = 0;
970 sysadm 1.2 continue;
971     }
972    
973 sysadm 1.25 input_ok = 1;
974 sysadm 1.1 switch (ch)
975     {
976     case KEY_NULL:
977 sysadm 1.61 #ifdef _DEBUG
978 sysadm 1.47 log_error("KEY_NULL\n");
979 sysadm 1.61 #endif
980 sysadm 1.47 goto cleanup;
981 sysadm 1.1 case KEY_TIMEOUT:
982 sysadm 1.47 log_error("User input timeout\n");
983 sysadm 1.1 goto cleanup;
984 sysadm 1.17 case Ctrl('W'):
985 sysadm 1.41 case Ctrl('X'):
986 sysadm 1.1 loop = 0;
987     break;
988 sysadm 1.13 case Ctrl('S'): // Start of line
989 sysadm 1.2 case KEY_CTRL_LEFT:
990 sysadm 1.1 col_pos = 1;
991     break;
992 sysadm 1.13 case Ctrl('E'): // End of line
993 sysadm 1.2 case KEY_CTRL_RIGHT:
994 sysadm 1.23 if (line_current - output_current_row + row_pos == p_editor_data->display_line_total - 1) // row_pos at end line
995 sysadm 1.22 {
996     // last display line does NOT have \n in the end
997 sysadm 1.39 col_pos = p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1;
998 sysadm 1.22 break;
999     }
1000 sysadm 1.39 col_pos = MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]);
1001 sysadm 1.1 break;
1002 sysadm 1.13 case Ctrl('T'): // Top of screen
1003 sysadm 1.2 case KEY_CTRL_UP:
1004 sysadm 1.3 row_pos = screen_begin_row;
1005 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1006 sysadm 1.2 break;
1007 sysadm 1.13 case Ctrl('B'): // Bottom of screen
1008 sysadm 1.2 case KEY_CTRL_DOWN:
1009 sysadm 1.18 if (p_editor_data->display_line_total < screen_row_total)
1010     {
1011     row_pos = p_editor_data->display_line_total;
1012     }
1013     else
1014     {
1015     row_pos = SCREEN_ROWS - 1;
1016     }
1017     if (line_current + (screen_row_total - (output_current_row - screen_begin_row)) >= p_editor_data->display_line_total) // Reach end
1018     {
1019     // last display line does NOT have \n in the end
1020 sysadm 1.39 col_pos = MIN(col_pos, p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1);
1021 sysadm 1.18 }
1022     else
1023     {
1024 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1025 sysadm 1.18 }
1026 sysadm 1.2 break;
1027     case KEY_INS:
1028 sysadm 1.8 key_insert = !key_insert;
1029 sysadm 1.2 break;
1030 sysadm 1.1 case KEY_HOME:
1031     row_pos = 1;
1032     col_pos = 1;
1033 sysadm 1.14 if (line_current - output_current_row < 0) // Reach begin
1034 sysadm 1.1 {
1035     break;
1036     }
1037     line_current = 0;
1038 sysadm 1.14 output_current_row = screen_begin_row;
1039     output_end_row = SCREEN_ROWS - 1;
1040     clrline(output_current_row, SCREEN_ROWS);
1041 sysadm 1.1 break;
1042     case KEY_END:
1043 sysadm 1.3 if (p_editor_data->display_line_total < screen_row_total)
1044 sysadm 1.1 {
1045     row_pos = p_editor_data->display_line_total;
1046 sysadm 1.39 col_pos = p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1;
1047 sysadm 1.1 break;
1048     }
1049 sysadm 1.3 line_current = p_editor_data->display_line_total - screen_row_total;
1050 sysadm 1.14 output_current_row = screen_begin_row;
1051     output_end_row = SCREEN_ROWS - 1;
1052     row_pos = SCREEN_ROWS - 1;
1053 sysadm 1.39 col_pos = p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1;
1054 sysadm 1.14 clrline(output_current_row, SCREEN_ROWS);
1055 sysadm 1.1 break;
1056     case KEY_LEFT:
1057 sysadm 1.39 offset_in = split_line(p_editor_data->p_display_lines[line_current - output_current_row + row_pos],
1058     (int)col_pos - 1, &eol, &display_len, 0);
1059 sysadm 1.55 col_pos = display_len;
1060 sysadm 1.56 if (offset_in > 0)
1061 sysadm 1.39 {
1062 sysadm 1.56 str_len = 1;
1063     offset_in--;
1064     if (p_editor_data->p_display_lines[line_current - output_current_row + row_pos][offset_in] < 0 ||
1065     p_editor_data->p_display_lines[line_current - output_current_row + row_pos][offset_in] > 127) // UTF8
1066 sysadm 1.55 {
1067 sysadm 1.56 while (offset_in > 0 &&
1068     (p_editor_data->p_display_lines[line_current - output_current_row + row_pos][offset_in] & 0xc0) != 0xc0)
1069     {
1070     str_len++;
1071     offset_in--;
1072     }
1073    
1074     if (str_len > 4)
1075     {
1076     log_error("Invalid UTF-8 data detected: str_len > 4\n");
1077     }
1078    
1079     if (mbstowcs(wcs, p_editor_data->p_display_lines[line_current - output_current_row + row_pos] + offset_in, 1) ==
1080     (size_t)-1)
1081     {
1082     log_error("mbstowcs() error\n");
1083     }
1084     wc_len = (UTF8_fixed_width ? 2 : wcwidth(wcs[0]));
1085    
1086     if (wc_len == 2)
1087     {
1088     col_pos--;
1089     }
1090 sysadm 1.55 }
1091 sysadm 1.39 }
1092     if (col_pos >= 1)
1093 sysadm 1.1 {
1094     break;
1095     }
1096     col_pos = SCREEN_COLS; // continue to KEY_UP
1097     case KEY_UP:
1098 sysadm 1.3 if (row_pos > screen_begin_row)
1099 sysadm 1.1 {
1100     row_pos--;
1101 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1102 sysadm 1.1 break;
1103     }
1104 sysadm 1.14 if (line_current - output_current_row < 0) // Reach begin
1105 sysadm 1.1 {
1106 sysadm 1.2 col_pos = 1;
1107 sysadm 1.1 break;
1108     }
1109 sysadm 1.14 line_current -= output_current_row;
1110     output_current_row = screen_begin_row;
1111 sysadm 1.1 // screen_end_line = begin_line;
1112     // prints("\033[T"); // Scroll down 1 line
1113 sysadm 1.14 output_end_row = SCREEN_ROWS - 1; // Legacy Fterm only works with this line
1114 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1115 sysadm 1.1 break;
1116     case KEY_RIGHT:
1117 sysadm 1.39 offset_in = split_line(p_editor_data->p_display_lines[line_current - output_current_row + row_pos],
1118     (int)col_pos - 1, &eol, &display_len, 0);
1119 sysadm 1.55 col_pos = display_len + 2;
1120 sysadm 1.56 if (offset_in < p_editor_data->display_line_lengths[line_current - output_current_row + row_pos])
1121 sysadm 1.39 {
1122 sysadm 1.56 str_len = 0;
1123     if ((p_editor_data->p_display_lines[line_current - output_current_row + row_pos][offset_in] & 0x80) ==
1124     0x80) // head of multi-byte character
1125     {
1126     c = (char)(p_editor_data->p_display_lines[line_current - output_current_row + row_pos][offset_in] & 0xf0);
1127     while (c & 0x80)
1128     {
1129     str_len++;
1130     c = (c & 0x7f) << 1;
1131     }
1132    
1133     if (str_len > 4)
1134     {
1135     log_error("Invalid UTF-8 data detected: str_len > 4\n");
1136     }
1137    
1138     if (mbstowcs(wcs, p_editor_data->p_display_lines[line_current - output_current_row + row_pos] + offset_in, 1) ==
1139     (size_t)-1)
1140     {
1141     log_error("mbstowcs() error\n");
1142     }
1143     wc_len = (UTF8_fixed_width ? 2 : wcwidth(wcs[0]));
1144    
1145     if (wc_len == 2)
1146     {
1147     col_pos++;
1148     }
1149     }
1150     else
1151 sysadm 1.55 {
1152 sysadm 1.56 str_len = 1;
1153 sysadm 1.55 }
1154 sysadm 1.56 offset_in += str_len;
1155 sysadm 1.39 }
1156     if (col_pos <= p_editor_data->display_line_widths[line_current - output_current_row + row_pos])
1157 sysadm 1.1 {
1158     break;
1159     }
1160     col_pos = 1; // continue to KEY_DOWN
1161     case KEY_DOWN:
1162 sysadm 1.3 if (row_pos < MIN(screen_row_total, p_editor_data->display_line_total))
1163 sysadm 1.1 {
1164     row_pos++;
1165 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1166 sysadm 1.1 break;
1167     }
1168 sysadm 1.23 if (line_current - output_current_row + row_pos == p_editor_data->display_line_total - 1) // row_pos at end line
1169 sysadm 1.1 {
1170 sysadm 1.18 // last display line does NOT have \n in the end
1171 sysadm 1.39 col_pos = p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1;
1172 sysadm 1.1 break;
1173     }
1174 sysadm 1.14 line_current += (screen_row_total - (output_current_row - screen_begin_row));
1175     output_current_row = screen_row_total;
1176     output_end_row = SCREEN_ROWS - 1;
1177 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1178 sysadm 1.1 moveto(SCREEN_ROWS, 0);
1179     clrtoeol();
1180 sysadm 1.36 // prints("\033[S"); // Scroll up 1 line
1181     prints("\n"); // Legacy Cterm only works with this line
1182 sysadm 1.1 break;
1183     case KEY_PGUP:
1184 sysadm 1.14 if (line_current - output_current_row < 0) // Reach begin
1185 sysadm 1.1 {
1186     break;
1187     }
1188 sysadm 1.14 line_current -= ((screen_row_total - 1) + (output_current_row - screen_begin_row));
1189 sysadm 1.1 if (line_current < 0)
1190     {
1191     line_current = 0;
1192     }
1193 sysadm 1.14 output_current_row = screen_begin_row;
1194     output_end_row = SCREEN_ROWS - 1;
1195 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1196 sysadm 1.14 clrline(output_current_row, SCREEN_ROWS);
1197 sysadm 1.1 break;
1198     case KEY_PGDN:
1199 sysadm 1.14 if (line_current + screen_row_total - (output_current_row - screen_begin_row) >= p_editor_data->display_line_total) // Reach end
1200 sysadm 1.1 {
1201     break;
1202     }
1203 sysadm 1.14 line_current += (screen_row_total - 1) - (output_current_row - screen_begin_row);
1204 sysadm 1.3 if (line_current + screen_row_total > p_editor_data->display_line_total) // No enough lines to display
1205 sysadm 1.1 {
1206 sysadm 1.3 line_current = p_editor_data->display_line_total - screen_row_total;
1207 sysadm 1.1 }
1208 sysadm 1.14 output_current_row = screen_begin_row;
1209     output_end_row = SCREEN_ROWS - 1;
1210 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1211 sysadm 1.14 clrline(output_current_row, SCREEN_ROWS);
1212 sysadm 1.1 break;
1213 sysadm 1.44 case Ctrl('Q'):
1214 sysadm 1.1 case KEY_F1:
1215 sysadm 1.50 if (!show_help) // Not re-entrant
1216 sysadm 1.1 {
1217     break;
1218     }
1219     // Display help information
1220     show_help = 0;
1221 sysadm 1.50 display_file(DATA_EDITOR_HELP, 1);
1222 sysadm 1.1 show_help = 1;
1223     case KEY_F5:
1224     // Refresh after display help information
1225 sysadm 1.14 line_current -= (output_current_row - screen_begin_row);
1226     output_current_row = screen_begin_row;
1227     output_end_row = SCREEN_ROWS - 1;
1228     clrline(output_current_row, SCREEN_ROWS);
1229 sysadm 1.1 break;
1230     case 0: // Refresh bottom line
1231     break;
1232     default:
1233     input_ok = 0;
1234     break;
1235     }
1236    
1237 sysadm 1.43 // Refresh current action while user input
1238     if (user_online_update(NULL) < 0)
1239     {
1240     log_error("user_online_update(NULL) error\n");
1241     }
1242    
1243 sysadm 1.14 if (input_ok)
1244 sysadm 1.11 {
1245 sysadm 1.14 break;
1246 sysadm 1.11 }
1247 sysadm 1.25
1248 sysadm 1.53 ch = igetch_t(BBS_max_user_idle_time);
1249 sysadm 1.1 }
1250    
1251     continue;
1252     }
1253    
1254     len = p_editor_data->display_line_lengths[line_current];
1255     if (len >= sizeof(buffer))
1256     {
1257     log_error("Buffer overflow: len=%ld line=%ld \n", len, line_current);
1258     len = sizeof(buffer) - 1;
1259     }
1260     else if (len < 0)
1261     {
1262     log_error("Incorrect line offsets: len=%ld line=%ld \n", len, line_current);
1263     len = 0;
1264     }
1265    
1266 sysadm 1.12 // memcpy(buffer, p_editor_data->p_display_lines[line_current], (size_t)len);
1267     // Replace '\033' with '*'
1268     p_str = p_editor_data->p_display_lines[line_current];
1269     for (i = 0, j = 0; i < len; i++)
1270     {
1271     if (p_str[i] == '\033')
1272     {
1273     memcpy(buffer + j, EDITOR_ESC_DISPLAY_STR, sizeof(EDITOR_ESC_DISPLAY_STR) - 1);
1274     j += (int)(sizeof(EDITOR_ESC_DISPLAY_STR) - 1);
1275     }
1276     else
1277     {
1278     buffer[j] = p_str[i];
1279     j++;
1280     }
1281     }
1282     buffer[j] = '\0';
1283 sysadm 1.1
1284 sysadm 1.14 moveto(output_current_row, 0);
1285 sysadm 1.1 clrtoeol();
1286     prints("%s", buffer);
1287     line_current++;
1288 sysadm 1.14 output_current_row++;
1289 sysadm 1.1 }
1290    
1291     cleanup:
1292     return ch;
1293     }
webmaster@leafok.com
 ViewVC Help
Powered by ViewVC 1.3.0-beta1