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

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Revision 1.65 - (hide annotations)
Sat Jan 3 10:27:14 2026 UTC (2 months, 1 week ago) by sysadm
Branch: MAIN
CVS Tags: HEAD
Changes since 1.64: +1 -1 lines
Content type: text/x-csrc 
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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 1.65 * Copyright (C) 2004-2026 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 sysadm 1.64 log_error("Editor mem pool already initialized");
42 sysadm 1.16 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 sysadm 1.64 log_error("Memory pool init error");
49 sysadm 1.16 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 sysadm 1.64 log_error("Memory pool init error");
56 sysadm 1.16 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 1.64 log_error("NULL pointer error");
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 1.64 log_error("memory_pool_alloc() error");
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 1.64 log_error("memory_pool_alloc() error: i = %d", 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 1.64 log_error("NULL pointer error");
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 sysadm 1.64 log_error("Data buffer not longer enough %d > %d", current_pos + p_editor_data->display_line_lengths[i] + 1, buf_len);
173 sysadm 1.1 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 1.64 log_error("NULL pointer error");
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 1.64 log_debug("Split line error, display_line_total(%ld) reach limit(%d)",
276 sysadm 1.29 p_editor_data->display_line_total, MAX_EDITOR_DATA_LINES);
277    
278 sysadm 1.2 return -2;
279     }
280    
281     // Allocate new data line
282 sysadm 1.16 p_data_line = memory_pool_alloc(p_mp_data_line);
283 sysadm 1.4 if (p_data_line == NULL)
284 sysadm 1.2 {
285 sysadm 1.64 log_error("memory_pool_alloc() error");
286 sysadm 1.2 return -2;
287     }
288 sysadm 1.3
289 sysadm 1.37 if (offset_data_line + str_len + 2 >= MAX_EDITOR_DATA_LINE_LENGTH || str[0] == CR)
290 sysadm 1.2 {
291 sysadm 1.6 if (str[0] == CR)
292     {
293     str_len = 0;
294     }
295 sysadm 1.3
296 sysadm 1.4 // Copy str to new data line
297     memcpy(p_data_line, str, (size_t)str_len);
298    
299     // Copy rest part of current data line to new data line
300     memcpy(p_data_line + str_len,
301 sysadm 1.2 p_editor_data->p_display_lines[display_line] + offset,
302 sysadm 1.4 (size_t)(len_data_line - offset_data_line));
303    
304     p_data_line[str_len + len_data_line - offset_data_line] = '\0';
305 sysadm 1.2
306     // Add line ending to current display line (data line)
307     p_editor_data->p_display_lines[display_line][offset] = '\n';
308     p_editor_data->p_display_lines[display_line][offset + 1] = '\0';
309     p_editor_data->display_line_lengths[display_line] = offset + 1;
310 sysadm 1.4
311     *p_display_line = display_line + 1;
312     *p_offset = str_len;
313 sysadm 1.2 }
314 sysadm 1.6 else
315     {
316     // Copy rest part of current data line to new data line
317     memcpy(p_data_line,
318     p_editor_data->p_display_lines[display_line] + offset,
319     (size_t)(len_data_line - offset_data_line));
320    
321     p_data_line[len_data_line - offset_data_line] = '\0';
322    
323     // Append str to current display line
324     memcpy(p_editor_data->p_display_lines[display_line] + offset, str, (size_t)str_len);
325    
326     // Add line ending to current display line (data line)
327     p_editor_data->p_display_lines[display_line][offset + str_len] = '\n';
328     p_editor_data->p_display_lines[display_line][offset + str_len + 1] = '\0';
329     p_editor_data->display_line_lengths[display_line] = offset + str_len + 1;
330    
331     *p_display_line = display_line;
332     *p_offset = offset + str_len;
333     }
334 sysadm 1.2
335 sysadm 1.39 // Update display width of current display line
336     len = split_line(p_editor_data->p_display_lines[display_line], SCREEN_COLS, &eol, &display_len, 0);
337     p_editor_data->display_line_widths[display_line] = display_len;
338    
339 sysadm 1.4 split_line_total = last_display_line - display_line + 3;
340    
341     // Set start display_line for spliting new data line
342 sysadm 1.2 display_line++;
343 sysadm 1.4
344     *p_last_updated_line = p_editor_data->display_line_total;
345 sysadm 1.2 }
346 sysadm 1.4 else // insert str into current data line at offset_data_line
347 sysadm 1.2 {
348 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));
349     memcpy(p_data_line + offset_data_line, str, (size_t)str_len);
350     p_data_line[len_data_line + str_len] = '\0';
351 sysadm 1.3
352 sysadm 1.4 // Set p_data_line to head of current display line
353     p_data_line = p_editor_data->p_display_lines[display_line];
354     split_line_total = last_display_line - display_line + 3;
355 sysadm 1.3
356 sysadm 1.4 *p_display_line = display_line;
357     *p_offset = offset + str_len;
358 sysadm 1.2 }
359    
360 sysadm 1.4 // Split current data line since beginning of current display line
361 sysadm 1.39 split_line_total = split_data_lines(p_data_line, SCREEN_COLS, line_offsets, split_line_total, 0, line_widths);
362 sysadm 1.2
363 sysadm 1.4 for (i = 0; i < split_line_total; i++)
364 sysadm 1.2 {
365 sysadm 1.4 if (display_line + i > last_display_line)
366 sysadm 1.2 {
367 sysadm 1.4 // Insert blank display line after last_display_line
368     if (p_editor_data->display_line_total >= MAX_EDITOR_DATA_LINES)
369     {
370 sysadm 1.64 log_debug("display_line_total over limit %d >= %d", p_editor_data->display_line_total, MAX_EDITOR_DATA_LINES);
371 sysadm 1.29
372 sysadm 1.15 // Terminate prior display line with \n, to avoid error on cleanup
373     if (display_line + i - 1 >= 0 && p_editor_data->display_line_lengths[display_line + i - 1] > 0)
374     {
375 sysadm 1.24 len = split_line(p_editor_data->p_display_lines[display_line + i - 1], SCREEN_COLS - 1, &eol, &display_len, 0);
376 sysadm 1.15 p_editor_data->p_display_lines[display_line + i - 1][len] = '\n';
377     p_editor_data->p_display_lines[display_line + i - 1][len + 1] = '\0';
378     p_editor_data->display_line_lengths[display_line + i - 1] = len + 1;
379 sysadm 1.39 p_editor_data->display_line_widths[display_line + i - 1] = display_len;
380 sysadm 1.15 }
381     if (*p_offset >= p_editor_data->display_line_lengths[*p_display_line])
382     {
383     *p_offset = p_editor_data->display_line_lengths[*p_display_line] - 1;
384     }
385     break;
386 sysadm 1.4 }
387 sysadm 1.32
388     // for (j = p_editor_data->display_line_total; j > last_display_line + 1; j--)
389     // {
390     // p_editor_data->p_display_lines[j] = p_editor_data->p_display_lines[j - 1];
391     // p_editor_data->display_line_lengths[j] = p_editor_data->display_line_lengths[j - 1];
392 sysadm 1.39 // p_editor_data->display_line_widths[j] = p_editor_data->display_line_widths[j - 1];
393 sysadm 1.32 // }
394     memmove(p_editor_data->p_display_lines + last_display_line + 2,
395     p_editor_data->p_display_lines + last_display_line + 1,
396     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
397     sizeof(p_editor_data->p_display_lines[last_display_line + 1]));
398     memmove(p_editor_data->display_line_lengths + last_display_line + 2,
399     p_editor_data->display_line_lengths + last_display_line + 1,
400     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
401     sizeof(p_editor_data->display_line_lengths[last_display_line + 1]));
402 sysadm 1.39 memmove(p_editor_data->display_line_widths + last_display_line + 2,
403     p_editor_data->display_line_widths + last_display_line + 1,
404     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
405     sizeof(p_editor_data->display_line_widths[last_display_line + 1]));
406 sysadm 1.32
407 sysadm 1.4 last_display_line++;
408 sysadm 1.32 *p_last_updated_line = p_editor_data->display_line_total;
409 sysadm 1.4 (p_editor_data->display_line_total)++;
410 sysadm 1.2 }
411    
412 sysadm 1.4 p_editor_data->display_line_lengths[display_line + i] = line_offsets[i + 1] - line_offsets[i];
413 sysadm 1.39 p_editor_data->display_line_widths[display_line + i] = line_widths[i];
414 sysadm 1.4 p_editor_data->p_display_lines[display_line + i] =
415     (i == 0
416     ? p_data_line
417     : (p_editor_data->p_display_lines[display_line + i - 1] + p_editor_data->display_line_lengths[display_line + i - 1]));
418 sysadm 1.2
419 sysadm 1.4 if (p_editor_data->display_line_lengths[display_line + i] > 0 &&
420     p_editor_data->p_display_lines[display_line + i][p_editor_data->display_line_lengths[display_line + i] - 1] == '\n')
421 sysadm 1.3 {
422 sysadm 1.4 break;
423 sysadm 1.3 }
424 sysadm 1.4 }
425 sysadm 1.3
426 sysadm 1.7 *p_last_updated_line = MAX(display_line + MIN(i, split_line_total - 1), *p_last_updated_line);
427 sysadm 1.2
428 sysadm 1.14 if (*p_offset >= p_editor_data->display_line_lengths[*p_display_line])
429 sysadm 1.3 {
430 sysadm 1.18 if (*p_display_line + 1 < p_editor_data->display_line_total)
431 sysadm 1.15 {
432 sysadm 1.18 *p_offset -= p_editor_data->display_line_lengths[*p_display_line];
433 sysadm 1.15 (*p_display_line)++;
434     }
435 sysadm 1.22 }
436    
437     // Prevent the last display line from being over-length
438     if (p_editor_data->display_line_total == MAX_EDITOR_DATA_LINES)
439     {
440 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);
441 sysadm 1.22 p_editor_data->p_display_lines[p_editor_data->display_line_total - 1][len] = '\0';
442     p_editor_data->display_line_lengths[p_editor_data->display_line_total - 1] = len;
443 sysadm 1.39 p_editor_data->display_line_widths[p_editor_data->display_line_total - 1] = display_len;
444 sysadm 1.22 if (*p_display_line + 1 >= p_editor_data->display_line_total)
445 sysadm 1.20 {
446 sysadm 1.22 *p_offset = MIN(*p_offset, len);
447     *p_display_line = p_editor_data->display_line_total - 1;
448 sysadm 1.20 }
449 sysadm 1.3 }
450    
451 sysadm 1.4 return 0;
452 sysadm 1.2 }
453    
454 sysadm 1.23 int editor_data_delete(EDITOR_DATA *p_editor_data, long *p_display_line, long *p_offset,
455 sysadm 1.49 long *p_last_updated_line, int del_line)
456 sysadm 1.2 {
457 sysadm 1.23 long display_line = *p_display_line;
458     long offset = *p_offset;
459 sysadm 1.7 char *p_data_line = NULL;
460     long len_data_line;
461     long offset_data_line;
462     long last_display_line; // of data line
463     long line_offsets[MAX_EDITOR_DATA_LINE_LENGTH + 1];
464 sysadm 1.39 int line_widths[MAX_EDITOR_DATA_LINE_LENGTH + 1];
465 sysadm 1.7 long split_line_total;
466     long i, j;
467     int str_len = 0;
468 sysadm 1.39 char c;
469 sysadm 1.7
470     if (p_editor_data == NULL || p_last_updated_line == NULL)
471     {
472 sysadm 1.64 log_error("NULL pointer error");
473 sysadm 1.7 return -1;
474     }
475    
476     // Get length of current data line
477     len_data_line = 0;
478     p_data_line = p_editor_data->p_display_lines[display_line];
479     for (i = display_line - 1; i >= 0; i--)
480     {
481     if (p_editor_data->display_line_lengths[i] > 0 &&
482     p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of prior data line
483     {
484     break;
485     }
486    
487     len_data_line += p_editor_data->display_line_lengths[i];
488     p_data_line = p_editor_data->p_display_lines[i];
489     }
490     offset_data_line = len_data_line + offset;
491     last_display_line = p_editor_data->display_line_total - 1;
492     for (i = display_line; i < p_editor_data->display_line_total; i++)
493     {
494     len_data_line += p_editor_data->display_line_lengths[i];
495    
496     if (p_editor_data->display_line_lengths[i] > 0 &&
497     p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of current data line
498     {
499     last_display_line = i;
500     break;
501     }
502     }
503    
504 sysadm 1.18 if (offset_data_line >= len_data_line) // end-of-line
505     {
506     return 0;
507     }
508    
509 sysadm 1.7 // Check str to be deleted
510 sysadm 1.49 if (del_line)
511     {
512     str_len = (int)(p_editor_data->display_line_lengths[display_line] - offset);
513     }
514     else if (p_data_line[offset_data_line] > 0 && p_data_line[offset_data_line] < 127)
515 sysadm 1.7 {
516     str_len = 1;
517     }
518 sysadm 1.48 else if (p_data_line[offset_data_line] & 0x80) // head of multi-byte character
519 sysadm 1.7 {
520 sysadm 1.39 str_len = 1;
521 sysadm 1.48 c = (p_data_line[offset_data_line] & 0x70) << 1;
522     while (c & 0x80)
523 sysadm 1.39 {
524     str_len++;
525 sysadm 1.48 c = (c & 0x7f) << 1;
526 sysadm 1.39 }
527 sysadm 1.7 }
528     else
529     {
530 sysadm 1.64 log_error("Some strange character at display_line %ld, offset %ld: %d %d",
531 sysadm 1.18 display_line, offset, p_data_line[offset_data_line], p_data_line[offset_data_line + 1]);
532 sysadm 1.10 str_len = 1;
533 sysadm 1.7 }
534    
535     // Current display line is (almost) empty
536     if (offset_data_line + str_len > len_data_line ||
537 sysadm 1.49 (offset_data_line + str_len == len_data_line &&
538     p_data_line[del_line ? len_data_line - 1 : offset_data_line] == '\n'))
539 sysadm 1.7 {
540 sysadm 1.9 if (display_line + 1 >= p_editor_data->display_line_total) // No additional display line (data line)
541     {
542     return 0;
543     }
544    
545     len_data_line = 0; // Next data line
546     last_display_line = p_editor_data->display_line_total - 1;
547     for (i = display_line + 1; i < p_editor_data->display_line_total; i++)
548     {
549     len_data_line += p_editor_data->display_line_lengths[i];
550    
551     if (p_editor_data->display_line_lengths[i] > 0 &&
552     p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of current data line
553     {
554     last_display_line = i;
555     break;
556     }
557     }
558    
559     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
560     {
561     return 0;
562     }
563    
564     // Append next data line to current one
565     memcpy(p_data_line + offset_data_line, p_editor_data->p_display_lines[display_line + 1], (size_t)len_data_line);
566     p_data_line[offset_data_line + len_data_line] = '\0';
567    
568     // Recycle next data line
569 sysadm 1.16 memory_pool_free(p_mp_data_line, p_editor_data->p_display_lines[display_line + 1]);
570 sysadm 1.9 }
571     else
572     {
573     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));
574     p_data_line[len_data_line - str_len] = '\0';
575     len_data_line -= str_len;
576 sysadm 1.7 }
577    
578     // Set p_data_line to head of current display line
579     p_data_line = p_editor_data->p_display_lines[display_line];
580     split_line_total = last_display_line - display_line + 2;
581    
582     // Split current data line since beginning of current display line
583 sysadm 1.39 split_line_total = split_data_lines(p_data_line, SCREEN_COLS, line_offsets, split_line_total, 0, line_widths);
584 sysadm 1.7
585     for (i = 0; i < split_line_total; i++)
586     {
587     p_editor_data->display_line_lengths[display_line + i] = line_offsets[i + 1] - line_offsets[i];
588 sysadm 1.39 p_editor_data->display_line_widths[display_line + i] = line_widths[i];
589 sysadm 1.7 p_editor_data->p_display_lines[display_line + i] =
590     (i == 0
591     ? p_data_line
592     : (p_editor_data->p_display_lines[display_line + i - 1] + p_editor_data->display_line_lengths[display_line + i - 1]));
593    
594     if (p_editor_data->display_line_lengths[display_line + i] > 0 &&
595     p_editor_data->p_display_lines[display_line + i][p_editor_data->display_line_lengths[display_line + i] - 1] == '\n')
596     {
597     break;
598     }
599     }
600    
601     *p_last_updated_line = display_line + MIN(i, split_line_total - 1);
602    
603 sysadm 1.18 if (*p_last_updated_line < last_display_line)
604 sysadm 1.7 {
605     // Remove redundant display line after last_display_line
606 sysadm 1.32 // for (j = last_display_line + 1; j < p_editor_data->display_line_total; j++)
607     // {
608     // p_editor_data->p_display_lines[j - (last_display_line - *p_last_updated_line)] = p_editor_data->p_display_lines[j];
609     // p_editor_data->display_line_lengths[j - (last_display_line - *p_last_updated_line)] = p_editor_data->display_line_lengths[j];
610 sysadm 1.39 // p_editor_data->display_line_widths[j - (last_display_line - *p_last_updated_line)] = p_editor_data->display_line_widths[j];
611 sysadm 1.32 // }
612     memmove(p_editor_data->p_display_lines + *p_last_updated_line + 1,
613     p_editor_data->p_display_lines + last_display_line + 1,
614     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
615     sizeof(p_editor_data->p_display_lines[last_display_line + 1]));
616     memmove(p_editor_data->display_line_lengths + *p_last_updated_line + 1,
617     p_editor_data->display_line_lengths + last_display_line + 1,
618     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
619     sizeof(p_editor_data->display_line_lengths[last_display_line + 1]));
620 sysadm 1.39 memmove(p_editor_data->display_line_widths + *p_last_updated_line + 1,
621     p_editor_data->display_line_widths + last_display_line + 1,
622     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
623     sizeof(p_editor_data->display_line_widths[last_display_line + 1]));
624 sysadm 1.7
625 sysadm 1.18 j = p_editor_data->display_line_total;
626     (p_editor_data->display_line_total) -= (last_display_line - *p_last_updated_line);
627     *p_last_updated_line = MAX(j - 1, *p_last_updated_line);
628 sysadm 1.7 }
629    
630 sysadm 1.23 // Return real offset
631     *p_offset = offset;
632    
633 sysadm 1.9 return str_len;
634 sysadm 1.2 }
635    
636     static int editor_display_key_handler(int *p_key, EDITOR_CTX *p_ctx)
637 sysadm 1.1 {
638     switch (*p_key)
639     {
640     case 0: // Set msg
641     snprintf(p_ctx->msg, sizeof(p_ctx->msg),
642 sysadm 1.55 "| 退出[\033[32mCtrl-W\033[33m] | [\033[32m%s\033[33m]",
643     (UTF8_fixed_width ? "定宽" : "变宽"));
644 sysadm 1.1 break;
645 sysadm 1.24 case KEY_CSI:
646     *p_key = KEY_ESC;
647     break;
648 sysadm 1.1 }
649    
650     return 0;
651     }
652    
653     int editor_display(EDITOR_DATA *p_editor_data)
654     {
655     static int show_help = 1;
656     char buffer[MAX_EDITOR_DATA_LINE_LENGTH];
657 sysadm 1.2 EDITOR_CTX ctx;
658 sysadm 1.1 int ch = 0;
659 sysadm 1.55 char input_str[5];
660 sysadm 1.56 int str_len = 0;
661 sysadm 1.55 wchar_t wcs[2];
662 sysadm 1.56 int wc_len;
663 sysadm 1.39 char c;
664 sysadm 1.3 int input_ok;
665     const int screen_begin_row = 1;
666 sysadm 1.14 const int screen_row_total = SCREEN_ROWS - screen_begin_row;
667     int output_current_row = screen_begin_row;
668     int output_end_row = SCREEN_ROWS - 1;
669 sysadm 1.1 long int line_current = 0;
670     long int len;
671     int loop;
672     int eol, display_len;
673     long row_pos = 1, col_pos = 1;
674 sysadm 1.3 long display_line_in, offset_in;
675     long display_line_out, offset_out;
676     int scroll_rows;
677 sysadm 1.2 long last_updated_line = 0;
678 sysadm 1.8 int key_insert = 1;
679 sysadm 1.12 int i, j;
680     char *p_str;
681 sysadm 1.49 int del_line;
682 sysadm 1.58 int tab_width = 0;
683 sysadm 1.1
684 sysadm 1.14 clrline(output_current_row, SCREEN_ROWS);
685 sysadm 1.1
686     // update msg_ext with extended key handler
687     if (editor_display_key_handler(&ch, &ctx) != 0)
688     {
689     return ch;
690     }
691    
692 sysadm 1.35 for (loop = 1; !SYS_server_exit && loop;)
693 sysadm 1.1 {
694 sysadm 1.14 if (line_current >= p_editor_data->display_line_total || output_current_row > output_end_row)
695 sysadm 1.1 {
696 sysadm 1.14 ctx.line_cursor = line_current - output_current_row + row_pos + 1;
697 sysadm 1.1
698     snprintf(buffer, sizeof(buffer),
699 sysadm 1.2 "\033[1;44;33m[\033[32m%ld\033[33m;\033[32m%ld\033[33m] "
700 sysadm 1.39 "第\033[32m%ld\033[33m/\033[32m%ld\033[33m行 [\033[32m%s\033[33m] "
701 sysadm 1.2 "%s",
702     row_pos, col_pos,
703     ctx.line_cursor, p_editor_data->display_line_total,
704 sysadm 1.39 key_insert ? "插入" : "替换",
705 sysadm 1.1 ctx.msg);
706    
707 sysadm 1.24 len = split_line(buffer, SCREEN_COLS, &eol, &display_len, 1);
708 sysadm 1.1 for (; display_len < SCREEN_COLS; display_len++)
709     {
710     buffer[len++] = ' ';
711     }
712     buffer[len] = '\0';
713     strncat(buffer, "\033[m", sizeof(buffer) - 1 - strnlen(buffer, sizeof(buffer)));
714    
715     moveto(SCREEN_ROWS, 0);
716     prints("%s", buffer);
717    
718     moveto((int)row_pos, (int)col_pos);
719     iflush();
720    
721 sysadm 1.58 tab_width = 0;
722 sysadm 1.25 str_len = 0;
723 sysadm 1.53 ch = igetch_t(BBS_max_user_idle_time);
724 sysadm 1.33 while (!SYS_server_exit)
725 sysadm 1.1 {
726 sysadm 1.47 if (ch != KEY_NULL && ch != KEY_TIMEOUT)
727     {
728     BBS_last_access_tm = time(NULL);
729     }
730    
731 sysadm 1.1 // extended key handler
732     if (editor_display_key_handler(&ch, &ctx) != 0)
733     {
734     goto cleanup;
735     }
736    
737 sysadm 1.58 if (ch == '\t')
738     {
739     ch = ' ';
740     tab_width = TAB_SIZE - ((int)(col_pos - 1) % TAB_SIZE) - 1;
741     }
742    
743 sysadm 1.48 if (ch < 256 && (ch & 0x80)) // head of multi-byte character
744 sysadm 1.3 {
745     str_len = 0;
746 sysadm 1.48 c = (char)(ch & 0xf0);
747     while (c & 0x80)
748 sysadm 1.39 {
749     input_str[str_len] = (char)(ch - 256);
750     str_len++;
751 sysadm 1.48 c = (c & 0x7f) << 1;
752 sysadm 1.39
753 sysadm 1.48 if ((c & 0x80) == 0) // Input completed
754 sysadm 1.39 {
755     break;
756     }
757    
758     // Expect additional bytes of input
759     ch = igetch(100); // 0.1 second
760     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
761     {
762 sysadm 1.64 log_debug("Ignore %d bytes of incomplete UTF8 character", str_len);
763 sysadm 1.39 str_len = 0;
764     break;
765     }
766     }
767 sysadm 1.55 input_str[str_len] = '\0';
768 sysadm 1.3 }
769    
770 sysadm 1.39 if ((ch >= 32 && ch < 127) || str_len >= 2 || // Printable character or multi-byte character
771     ch == CR || ch == KEY_ESC) // Special character
772 sysadm 1.2 {
773 sysadm 1.43 // Refresh current action while user input
774     if (user_online_update(NULL) < 0)
775     {
776 sysadm 1.64 log_error("user_online_update(NULL) error");
777 sysadm 1.43 }
778    
779 sysadm 1.21 if (str_len == 0) // ch >= 32 && ch < 127
780 sysadm 1.3 {
781 sysadm 1.4 input_str[0] = (char)ch;
782 sysadm 1.3 str_len = 1;
783     }
784    
785 sysadm 1.14 display_line_in = line_current - output_current_row + row_pos;
786 sysadm 1.39 offset_in = split_line(p_editor_data->p_display_lines[display_line_in], (int)col_pos - 1, &eol, &display_len, 0);
787 sysadm 1.3 display_line_out = display_line_in;
788     offset_out = offset_in;
789 sysadm 1.2
790 sysadm 1.32 last_updated_line = display_line_in;
791    
792 sysadm 1.8 if (!key_insert) // overwrite
793     {
794 sysadm 1.23 if (editor_data_delete(p_editor_data, &display_line_out, &offset_out,
795 sysadm 1.49 &last_updated_line, 0) < 0)
796 sysadm 1.8 {
797 sysadm 1.64 log_error("editor_data_delete() error");
798 sysadm 1.8 }
799     }
800    
801 sysadm 1.3 if (editor_data_insert(p_editor_data, &display_line_out, &offset_out,
802 sysadm 1.4 input_str, str_len, &last_updated_line) < 0)
803 sysadm 1.2 {
804 sysadm 1.64 log_error("editor_data_insert(str_len=%d) error", str_len);
805 sysadm 1.2 }
806     else
807     {
808 sysadm 1.14 output_end_row = MIN(SCREEN_ROWS - 1, output_current_row + (int)(last_updated_line - line_current));
809     line_current -= (output_current_row - row_pos);
810     output_current_row = (int)row_pos;
811 sysadm 1.2
812 sysadm 1.14 scroll_rows = MAX(0, (int)(display_line_out - display_line_in) - (output_end_row - output_current_row));
813 sysadm 1.2
814 sysadm 1.3 if (scroll_rows > 0)
815 sysadm 1.2 {
816 sysadm 1.3 moveto(SCREEN_ROWS, 0);
817     clrtoeol();
818     for (i = 0; i < scroll_rows; i++)
819     {
820 sysadm 1.36 // prints("\033[S"); // Scroll up 1 line
821     prints("\n"); // Legacy Cterm only works with this line
822 sysadm 1.3 }
823 sysadm 1.2
824 sysadm 1.14 output_current_row -= scroll_rows;
825     if (output_current_row < screen_begin_row)
826 sysadm 1.2 {
827 sysadm 1.14 line_current += (screen_begin_row - output_current_row);
828     output_current_row = screen_begin_row;
829 sysadm 1.2 }
830 sysadm 1.14 row_pos = output_end_row;
831 sysadm 1.3 }
832     else // if (scroll_lines == 0)
833     {
834     row_pos += (display_line_out - display_line_in);
835 sysadm 1.2 }
836 sysadm 1.39
837     if (offset_out != offset_in)
838     {
839     if (display_line_out != display_line_in)
840     {
841     col_pos = 1;
842     }
843 sysadm 1.42 if (offset_out > 0)
844 sysadm 1.39 {
845 sysadm 1.55 if (mbstowcs(wcs, input_str, 1) == (size_t)-1)
846     {
847 sysadm 1.64 log_error("mbstowcs() error");
848 sysadm 1.55 }
849     col_pos += (str_len == 1 ? 1 : (UTF8_fixed_width ? 2 : wcwidth(wcs[0])));
850 sysadm 1.39 }
851     }
852 sysadm 1.11 }
853 sysadm 1.3
854 sysadm 1.25 if (display_line_out != display_line_in) // Output on line change
855     {
856     break;
857     }
858    
859 sysadm 1.58 if (ch == ' ' && tab_width > 0)
860     {
861     tab_width--;
862     }
863     else
864 sysadm 1.25 {
865 sysadm 1.58 ch = igetch(0);
866     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Output if no futher input
867     {
868     break;
869     }
870 sysadm 1.25 }
871    
872 sysadm 1.21 str_len = 0;
873 sysadm 1.11 continue;
874 sysadm 1.2 }
875 sysadm 1.49 else if (ch == KEY_DEL || ch == BACKSPACE || ch == Ctrl('K') || ch == Ctrl('Y')) // Del
876 sysadm 1.2 {
877 sysadm 1.43 // Refresh current action while user input
878     if (user_online_update(NULL) < 0)
879     {
880 sysadm 1.64 log_error("user_online_update(NULL) error");
881 sysadm 1.43 }
882    
883 sysadm 1.49 del_line = 0;
884    
885 sysadm 1.9 if (ch == BACKSPACE)
886     {
887 sysadm 1.18 if (line_current - output_current_row + row_pos <= 0 && col_pos <= 1) // Forbidden
888     {
889 sysadm 1.34 break; // force output prior operation result if any
890 sysadm 1.18 }
891    
892 sysadm 1.39 offset_in = split_line(p_editor_data->p_display_lines[line_current - output_current_row + row_pos],
893     (int)col_pos - 1, &eol, &display_len, 0);
894 sysadm 1.55 col_pos = display_len;
895 sysadm 1.14 if (col_pos < 1 && line_current - output_current_row + row_pos >= 0)
896 sysadm 1.9 {
897     row_pos--;
898 sysadm 1.39 col_pos = MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]);
899 sysadm 1.9 }
900     }
901 sysadm 1.49 else if (ch == Ctrl('K'))
902     {
903     del_line = 1;
904     }
905     else if (ch == Ctrl('Y'))
906     {
907     col_pos = 1;
908     del_line = 1;
909     }
910 sysadm 1.2
911 sysadm 1.23 display_line_in = line_current - output_current_row + row_pos;
912 sysadm 1.39 offset_in = split_line(p_editor_data->p_display_lines[display_line_in], (int)col_pos - 1, &eol, &display_len, 0);
913 sysadm 1.23 display_line_out = display_line_in;
914     offset_out = offset_in;
915    
916     if ((str_len = editor_data_delete(p_editor_data, &display_line_out, &offset_out,
917 sysadm 1.49 &last_updated_line, del_line)) < 0)
918 sysadm 1.2 {
919 sysadm 1.64 log_error("editor_data_delete() error: %d", str_len);
920 sysadm 1.2 }
921     else
922     {
923 sysadm 1.39 col_pos = display_len + 1; // Set col_pos to accurate pos
924 sysadm 1.9
925 sysadm 1.14 output_end_row = MIN(SCREEN_ROWS - 1, output_current_row + (int)(last_updated_line - line_current));
926     line_current -= (output_current_row - row_pos);
927     output_current_row = (int)row_pos;
928 sysadm 1.9
929 sysadm 1.14 if (output_current_row < screen_begin_row) // row_pos <= 0
930 sysadm 1.9 {
931 sysadm 1.14 output_current_row = screen_begin_row;
932 sysadm 1.9 row_pos = screen_begin_row;
933 sysadm 1.14 output_end_row = SCREEN_ROWS - 1;
934     }
935    
936     // Exceed end
937     if (line_current + (screen_row_total - output_current_row) >= p_editor_data->display_line_total &&
938     p_editor_data->display_line_total > screen_row_total)
939     {
940     scroll_rows = (int)((line_current - (output_current_row - screen_begin_row)) -
941     (p_editor_data->display_line_total - screen_row_total));
942    
943     line_current = p_editor_data->display_line_total - screen_row_total;
944     row_pos += scroll_rows;
945     output_current_row = screen_begin_row;
946     output_end_row = SCREEN_ROWS - 1;
947 sysadm 1.9 }
948 sysadm 1.18
949     clrline(output_current_row, output_end_row);
950 sysadm 1.2 }
951    
952 sysadm 1.25 if (display_line_out != display_line_in) // Output on line change
953     {
954     break;
955     }
956    
957     ch = igetch(0);
958     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Output if no futher input
959     {
960     break;
961     }
962    
963 sysadm 1.21 str_len = 0;
964 sysadm 1.2 continue;
965     }
966    
967 sysadm 1.25 input_ok = 1;
968 sysadm 1.1 switch (ch)
969     {
970     case KEY_NULL:
971 sysadm 1.64 log_debug("KEY_NULL");
972 sysadm 1.47 goto cleanup;
973 sysadm 1.1 case KEY_TIMEOUT:
974 sysadm 1.64 log_debug("User input timeout");
975 sysadm 1.1 goto cleanup;
976 sysadm 1.17 case Ctrl('W'):
977 sysadm 1.41 case Ctrl('X'):
978 sysadm 1.1 loop = 0;
979     break;
980 sysadm 1.13 case Ctrl('S'): // Start of line
981 sysadm 1.2 case KEY_CTRL_LEFT:
982 sysadm 1.1 col_pos = 1;
983     break;
984 sysadm 1.13 case Ctrl('E'): // End of line
985 sysadm 1.2 case KEY_CTRL_RIGHT:
986 sysadm 1.23 if (line_current - output_current_row + row_pos == p_editor_data->display_line_total - 1) // row_pos at end line
987 sysadm 1.22 {
988     // last display line does NOT have \n in the end
989 sysadm 1.39 col_pos = p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1;
990 sysadm 1.22 break;
991     }
992 sysadm 1.39 col_pos = MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]);
993 sysadm 1.1 break;
994 sysadm 1.13 case Ctrl('T'): // Top of screen
995 sysadm 1.2 case KEY_CTRL_UP:
996 sysadm 1.3 row_pos = screen_begin_row;
997 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
998 sysadm 1.2 break;
999 sysadm 1.13 case Ctrl('B'): // Bottom of screen
1000 sysadm 1.2 case KEY_CTRL_DOWN:
1001 sysadm 1.18 if (p_editor_data->display_line_total < screen_row_total)
1002     {
1003     row_pos = p_editor_data->display_line_total;
1004     }
1005     else
1006     {
1007     row_pos = SCREEN_ROWS - 1;
1008     }
1009     if (line_current + (screen_row_total - (output_current_row - screen_begin_row)) >= p_editor_data->display_line_total) // Reach end
1010     {
1011     // last display line does NOT have \n in the end
1012 sysadm 1.39 col_pos = MIN(col_pos, p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1);
1013 sysadm 1.18 }
1014     else
1015     {
1016 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1017 sysadm 1.18 }
1018 sysadm 1.2 break;
1019     case KEY_INS:
1020 sysadm 1.8 key_insert = !key_insert;
1021 sysadm 1.2 break;
1022 sysadm 1.1 case KEY_HOME:
1023     row_pos = 1;
1024     col_pos = 1;
1025 sysadm 1.14 if (line_current - output_current_row < 0) // Reach begin
1026 sysadm 1.1 {
1027     break;
1028     }
1029     line_current = 0;
1030 sysadm 1.14 output_current_row = screen_begin_row;
1031     output_end_row = SCREEN_ROWS - 1;
1032     clrline(output_current_row, SCREEN_ROWS);
1033 sysadm 1.1 break;
1034     case KEY_END:
1035 sysadm 1.3 if (p_editor_data->display_line_total < screen_row_total)
1036 sysadm 1.1 {
1037     row_pos = p_editor_data->display_line_total;
1038 sysadm 1.39 col_pos = p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1;
1039 sysadm 1.1 break;
1040     }
1041 sysadm 1.3 line_current = p_editor_data->display_line_total - screen_row_total;
1042 sysadm 1.14 output_current_row = screen_begin_row;
1043     output_end_row = SCREEN_ROWS - 1;
1044     row_pos = SCREEN_ROWS - 1;
1045 sysadm 1.39 col_pos = p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1;
1046 sysadm 1.14 clrline(output_current_row, SCREEN_ROWS);
1047 sysadm 1.1 break;
1048     case KEY_LEFT:
1049 sysadm 1.39 offset_in = split_line(p_editor_data->p_display_lines[line_current - output_current_row + row_pos],
1050     (int)col_pos - 1, &eol, &display_len, 0);
1051 sysadm 1.55 col_pos = display_len;
1052 sysadm 1.56 if (offset_in > 0)
1053 sysadm 1.39 {
1054 sysadm 1.56 str_len = 1;
1055     offset_in--;
1056     if (p_editor_data->p_display_lines[line_current - output_current_row + row_pos][offset_in] < 0 ||
1057     p_editor_data->p_display_lines[line_current - output_current_row + row_pos][offset_in] > 127) // UTF8
1058 sysadm 1.55 {
1059 sysadm 1.56 while (offset_in > 0 &&
1060     (p_editor_data->p_display_lines[line_current - output_current_row + row_pos][offset_in] & 0xc0) != 0xc0)
1061     {
1062     str_len++;
1063     offset_in--;
1064     }
1065    
1066     if (str_len > 4)
1067     {
1068 sysadm 1.64 log_error("Invalid UTF-8 data detected: str_len > 4");
1069 sysadm 1.56 }
1070    
1071     if (mbstowcs(wcs, p_editor_data->p_display_lines[line_current - output_current_row + row_pos] + offset_in, 1) ==
1072     (size_t)-1)
1073     {
1074 sysadm 1.64 log_error("mbstowcs() error");
1075 sysadm 1.56 }
1076     wc_len = (UTF8_fixed_width ? 2 : wcwidth(wcs[0]));
1077    
1078     if (wc_len == 2)
1079     {
1080     col_pos--;
1081     }
1082 sysadm 1.55 }
1083 sysadm 1.39 }
1084     if (col_pos >= 1)
1085 sysadm 1.1 {
1086     break;
1087     }
1088     col_pos = SCREEN_COLS; // continue to KEY_UP
1089     case KEY_UP:
1090 sysadm 1.3 if (row_pos > screen_begin_row)
1091 sysadm 1.1 {
1092     row_pos--;
1093 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1094 sysadm 1.1 break;
1095     }
1096 sysadm 1.14 if (line_current - output_current_row < 0) // Reach begin
1097 sysadm 1.1 {
1098 sysadm 1.2 col_pos = 1;
1099 sysadm 1.1 break;
1100     }
1101 sysadm 1.14 line_current -= output_current_row;
1102     output_current_row = screen_begin_row;
1103 sysadm 1.1 // screen_end_line = begin_line;
1104     // prints("\033[T"); // Scroll down 1 line
1105 sysadm 1.14 output_end_row = SCREEN_ROWS - 1; // Legacy Fterm only works with this line
1106 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1107 sysadm 1.1 break;
1108     case KEY_RIGHT:
1109 sysadm 1.39 offset_in = split_line(p_editor_data->p_display_lines[line_current - output_current_row + row_pos],
1110     (int)col_pos - 1, &eol, &display_len, 0);
1111 sysadm 1.55 col_pos = display_len + 2;
1112 sysadm 1.56 if (offset_in < p_editor_data->display_line_lengths[line_current - output_current_row + row_pos])
1113 sysadm 1.39 {
1114 sysadm 1.56 str_len = 0;
1115     if ((p_editor_data->p_display_lines[line_current - output_current_row + row_pos][offset_in] & 0x80) ==
1116     0x80) // head of multi-byte character
1117     {
1118     c = (char)(p_editor_data->p_display_lines[line_current - output_current_row + row_pos][offset_in] & 0xf0);
1119     while (c & 0x80)
1120     {
1121     str_len++;
1122     c = (c & 0x7f) << 1;
1123     }
1124    
1125     if (str_len > 4)
1126     {
1127 sysadm 1.64 log_error("Invalid UTF-8 data detected: str_len > 4");
1128 sysadm 1.56 }
1129    
1130     if (mbstowcs(wcs, p_editor_data->p_display_lines[line_current - output_current_row + row_pos] + offset_in, 1) ==
1131     (size_t)-1)
1132     {
1133 sysadm 1.64 log_error("mbstowcs() error");
1134 sysadm 1.56 }
1135     wc_len = (UTF8_fixed_width ? 2 : wcwidth(wcs[0]));
1136    
1137     if (wc_len == 2)
1138     {
1139     col_pos++;
1140     }
1141     }
1142     else
1143 sysadm 1.55 {
1144 sysadm 1.56 str_len = 1;
1145 sysadm 1.55 }
1146 sysadm 1.56 offset_in += str_len;
1147 sysadm 1.39 }
1148     if (col_pos <= p_editor_data->display_line_widths[line_current - output_current_row + row_pos])
1149 sysadm 1.1 {
1150     break;
1151     }
1152     col_pos = 1; // continue to KEY_DOWN
1153     case KEY_DOWN:
1154 sysadm 1.3 if (row_pos < MIN(screen_row_total, p_editor_data->display_line_total))
1155 sysadm 1.1 {
1156     row_pos++;
1157 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1158 sysadm 1.1 break;
1159     }
1160 sysadm 1.23 if (line_current - output_current_row + row_pos == p_editor_data->display_line_total - 1) // row_pos at end line
1161 sysadm 1.1 {
1162 sysadm 1.18 // last display line does NOT have \n in the end
1163 sysadm 1.39 col_pos = p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1;
1164 sysadm 1.1 break;
1165     }
1166 sysadm 1.14 line_current += (screen_row_total - (output_current_row - screen_begin_row));
1167     output_current_row = screen_row_total;
1168     output_end_row = SCREEN_ROWS - 1;
1169 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1170 sysadm 1.1 moveto(SCREEN_ROWS, 0);
1171     clrtoeol();
1172 sysadm 1.36 // prints("\033[S"); // Scroll up 1 line
1173     prints("\n"); // Legacy Cterm only works with this line
1174 sysadm 1.1 break;
1175     case KEY_PGUP:
1176 sysadm 1.14 if (line_current - output_current_row < 0) // Reach begin
1177 sysadm 1.1 {
1178     break;
1179     }
1180 sysadm 1.14 line_current -= ((screen_row_total - 1) + (output_current_row - screen_begin_row));
1181 sysadm 1.1 if (line_current < 0)
1182     {
1183     line_current = 0;
1184     }
1185 sysadm 1.14 output_current_row = screen_begin_row;
1186     output_end_row = SCREEN_ROWS - 1;
1187 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1188 sysadm 1.14 clrline(output_current_row, SCREEN_ROWS);
1189 sysadm 1.1 break;
1190     case KEY_PGDN:
1191 sysadm 1.14 if (line_current + screen_row_total - (output_current_row - screen_begin_row) >= p_editor_data->display_line_total) // Reach end
1192 sysadm 1.1 {
1193     break;
1194     }
1195 sysadm 1.14 line_current += (screen_row_total - 1) - (output_current_row - screen_begin_row);
1196 sysadm 1.3 if (line_current + screen_row_total > p_editor_data->display_line_total) // No enough lines to display
1197 sysadm 1.1 {
1198 sysadm 1.3 line_current = p_editor_data->display_line_total - screen_row_total;
1199 sysadm 1.1 }
1200 sysadm 1.14 output_current_row = screen_begin_row;
1201     output_end_row = SCREEN_ROWS - 1;
1202 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1203 sysadm 1.14 clrline(output_current_row, SCREEN_ROWS);
1204 sysadm 1.1 break;
1205 sysadm 1.44 case Ctrl('Q'):
1206 sysadm 1.1 case KEY_F1:
1207 sysadm 1.50 if (!show_help) // Not re-entrant
1208 sysadm 1.1 {
1209     break;
1210     }
1211     // Display help information
1212     show_help = 0;
1213 sysadm 1.50 display_file(DATA_EDITOR_HELP, 1);
1214 sysadm 1.1 show_help = 1;
1215     case KEY_F5:
1216     // Refresh after display help information
1217 sysadm 1.14 line_current -= (output_current_row - screen_begin_row);
1218     output_current_row = screen_begin_row;
1219     output_end_row = SCREEN_ROWS - 1;
1220     clrline(output_current_row, SCREEN_ROWS);
1221 sysadm 1.1 break;
1222     case 0: // Refresh bottom line
1223     break;
1224     default:
1225     input_ok = 0;
1226     break;
1227     }
1228    
1229 sysadm 1.43 // Refresh current action while user input
1230     if (user_online_update(NULL) < 0)
1231     {
1232 sysadm 1.64 log_error("user_online_update(NULL) error");
1233 sysadm 1.43 }
1234    
1235 sysadm 1.14 if (input_ok)
1236 sysadm 1.11 {
1237 sysadm 1.14 break;
1238 sysadm 1.11 }
1239 sysadm 1.25
1240 sysadm 1.53 ch = igetch_t(BBS_max_user_idle_time);
1241 sysadm 1.1 }
1242    
1243     continue;
1244     }
1245    
1246     len = p_editor_data->display_line_lengths[line_current];
1247     if (len >= sizeof(buffer))
1248     {
1249 sysadm 1.64 log_error("Buffer overflow: len=%ld line=%ld ", len, line_current);
1250 sysadm 1.1 len = sizeof(buffer) - 1;
1251     }
1252     else if (len < 0)
1253     {
1254 sysadm 1.64 log_error("Incorrect line offsets: len=%ld line=%ld ", len, line_current);
1255 sysadm 1.1 len = 0;
1256     }
1257    
1258 sysadm 1.12 // memcpy(buffer, p_editor_data->p_display_lines[line_current], (size_t)len);
1259     // Replace '\033' with '*'
1260     p_str = p_editor_data->p_display_lines[line_current];
1261     for (i = 0, j = 0; i < len; i++)
1262     {
1263     if (p_str[i] == '\033')
1264     {
1265     memcpy(buffer + j, EDITOR_ESC_DISPLAY_STR, sizeof(EDITOR_ESC_DISPLAY_STR) - 1);
1266     j += (int)(sizeof(EDITOR_ESC_DISPLAY_STR) - 1);
1267     }
1268     else
1269     {
1270     buffer[j] = p_str[i];
1271     j++;
1272     }
1273     }
1274     buffer[j] = '\0';
1275 sysadm 1.1
1276 sysadm 1.14 moveto(output_current_row, 0);
1277 sysadm 1.1 clrtoeol();
1278     prints("%s", buffer);
1279     line_current++;
1280 sysadm 1.14 output_current_row++;
1281 sysadm 1.1 }
1282    
1283     cleanup:
1284     return ch;
1285     }
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