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

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Revision 1.55 - (hide annotations)
Sat Nov 8 08:21:31 2025 UTC (4 months, 1 week ago) by sysadm
Branch: MAIN
Changes since 1.54: +26 -22 lines
Content type: text/x-csrc 
Support dynamic wide-character display width in str_process and editor related functions
Add dynamic / fixed wide-character display width selection
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 1.31 #include "bbs.h"
10     #include "common.h"
11 sysadm 1.1 #include "editor.h"
12     #include "io.h"
13     #include "log.h"
14 sysadm 1.43 #include "login.h"
15 sysadm 1.31 #include "memory_pool.h"
16 sysadm 1.1 #include "str_process.h"
17     #include <stdlib.h>
18 sysadm 1.30 #include <string.h>
19 sysadm 1.55 #include <wchar.h>
20 sysadm 1.1 #include <sys/param.h>
21    
22 sysadm 1.54 enum _editor_constant_t
23     {
24     EDITOR_MEM_POOL_LINE_PER_CHUNK = 1000,
25     EDITOR_MEM_POOL_CHUNK_LIMIT = (MAX_EDITOR_DATA_LINES / EDITOR_MEM_POOL_LINE_PER_CHUNK + 1),
26     };
27    
28     static const char EDITOR_ESC_DISPLAY_STR[] = "\033[32m*\033[m";
29 sysadm 1.16
30     static MEMORY_POOL *p_mp_data_line;
31     static MEMORY_POOL *p_mp_editor_data;
32    
33     int editor_memory_pool_init(void)
34     {
35     if (p_mp_data_line != NULL || p_mp_editor_data != NULL)
36     {
37     log_error("Editor mem pool already initialized\n");
38     return -1;
39     }
40    
41     p_mp_data_line = memory_pool_init(MAX_EDITOR_DATA_LINE_LENGTH, EDITOR_MEM_POOL_LINE_PER_CHUNK, EDITOR_MEM_POOL_CHUNK_LIMIT);
42     if (p_mp_data_line == NULL)
43     {
44     log_error("Memory pool init error\n");
45     return -2;
46     }
47    
48     p_mp_editor_data = memory_pool_init(sizeof(EDITOR_DATA), 1, 1);
49 sysadm 1.45 if (p_mp_editor_data == NULL)
50 sysadm 1.16 {
51     log_error("Memory pool init error\n");
52     return -3;
53     }
54    
55     return 0;
56     }
57    
58     void editor_memory_pool_cleanup(void)
59     {
60     if (p_mp_data_line != NULL)
61     {
62     memory_pool_cleanup(p_mp_data_line);
63     p_mp_data_line = NULL;
64     }
65    
66     if (p_mp_editor_data != NULL)
67     {
68     memory_pool_cleanup(p_mp_editor_data);
69     p_mp_editor_data = NULL;
70     }
71     }
72 sysadm 1.12
73 sysadm 1.1 EDITOR_DATA *editor_data_load(const char *p_data)
74     {
75     EDITOR_DATA *p_editor_data;
76 sysadm 1.4 char *p_data_line = NULL;
77 sysadm 1.22 long line_offsets[MAX_EDITOR_DATA_LINES + 1];
78 sysadm 1.1 long current_data_line_length = 0;
79 sysadm 1.14 long i;
80 sysadm 1.1
81     if (p_data == NULL)
82     {
83 sysadm 1.46 log_error("NULL pointer error\n");
84 sysadm 1.1 return NULL;
85     }
86    
87 sysadm 1.16 p_editor_data = memory_pool_alloc(p_mp_editor_data);
88 sysadm 1.1 if (p_editor_data == NULL)
89     {
90 sysadm 1.16 log_error("memory_pool_alloc() error\n");
91 sysadm 1.1 return NULL;
92     }
93    
94 sysadm 1.39 p_editor_data->display_line_total = split_data_lines(p_data, SCREEN_COLS, line_offsets, MAX_EDITOR_DATA_LINES + 1,
95     0, p_editor_data->display_line_widths);
96 sysadm 1.1
97     for (i = 0; i < p_editor_data->display_line_total; i++)
98     {
99     p_editor_data->display_line_lengths[i] = line_offsets[i + 1] - line_offsets[i];
100    
101     if (i == 0 ||
102 sysadm 1.2 current_data_line_length + p_editor_data->display_line_lengths[i] + 1 > MAX_EDITOR_DATA_LINE_LENGTH ||
103 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'))
104     {
105     // Allocate new data line
106 sysadm 1.16 p_data_line = memory_pool_alloc(p_mp_data_line);
107 sysadm 1.4 if (p_data_line == NULL)
108 sysadm 1.1 {
109 sysadm 1.16 log_error("memory_pool_alloc() error: i = %d\n", i);
110 sysadm 1.1 // Cleanup
111 sysadm 1.14 editor_data_cleanup(p_editor_data);
112 sysadm 1.1 return NULL;
113     }
114    
115 sysadm 1.4 p_editor_data->p_display_lines[i] = p_data_line;
116 sysadm 1.2 current_data_line_length = 0;
117 sysadm 1.1 }
118     else
119     {
120     p_editor_data->p_display_lines[i] = p_editor_data->p_display_lines[i - 1] + p_editor_data->display_line_lengths[i - 1];
121     }
122    
123     memcpy(p_editor_data->p_display_lines[i], p_data + line_offsets[i], (size_t)p_editor_data->display_line_lengths[i]);
124     current_data_line_length += p_editor_data->display_line_lengths[i];
125 sysadm 1.19
126     // Trim \n from last line
127 sysadm 1.20 if (i + 1 == p_editor_data->display_line_total &&
128     p_editor_data->display_line_lengths[i] > 0 &&
129 sysadm 1.19 p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n')
130     {
131     p_editor_data->display_line_lengths[i]--;
132 sysadm 1.39 p_editor_data->display_line_widths[i]--;
133 sysadm 1.19 current_data_line_length--;
134     }
135 sysadm 1.4 p_data_line[current_data_line_length] = '\0';
136 sysadm 1.1 }
137    
138 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);
139 sysadm 1.4
140 sysadm 1.1 return p_editor_data;
141     }
142    
143     long editor_data_save(const EDITOR_DATA *p_editor_data, char *p_data, size_t buf_len)
144     {
145     long current_pos = 0;
146     long i;
147    
148     if (p_editor_data == NULL || p_data == NULL)
149     {
150 sysadm 1.46 log_error("NULL pointer error\n");
151 sysadm 1.1 return -1;
152     }
153    
154     for (i = 0; i < p_editor_data->display_line_total; i++)
155     {
156     if (current_pos + p_editor_data->display_line_lengths[i] + 1 > buf_len)
157     {
158     log_error("Data buffer not longer enough %d > %d\n", current_pos + p_editor_data->display_line_lengths[i] + 1, buf_len);
159     p_data[current_pos] = '\0';
160     return -2;
161     }
162    
163     memcpy(p_data + current_pos, p_editor_data->p_display_lines[i], (size_t)p_editor_data->display_line_lengths[i]);
164     current_pos += p_editor_data->display_line_lengths[i];
165     }
166    
167     p_data[current_pos] = '\0';
168    
169     return current_pos;
170     }
171    
172     void editor_data_cleanup(EDITOR_DATA *p_editor_data)
173     {
174 sysadm 1.14 char *p_data_line = NULL;
175 sysadm 1.1 long i;
176    
177     if (p_editor_data == NULL)
178     {
179     return;
180     }
181    
182 sysadm 1.14 for (i = 0; i < p_editor_data->display_line_total; i++)
183     {
184     if (p_data_line == NULL)
185     {
186     p_data_line = p_editor_data->p_display_lines[i];
187     }
188    
189     if (p_editor_data->display_line_lengths[i] > 0 &&
190     p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n')
191     {
192 sysadm 1.16 memory_pool_free(p_mp_data_line, p_data_line);
193 sysadm 1.14 p_data_line = NULL;
194     }
195     }
196    
197     if (p_data_line != NULL)
198 sysadm 1.1 {
199 sysadm 1.16 memory_pool_free(p_mp_data_line, p_data_line);
200 sysadm 1.1 }
201    
202 sysadm 1.16 memory_pool_free(p_mp_editor_data, p_editor_data);
203 sysadm 1.1 }
204    
205 sysadm 1.3 int editor_data_insert(EDITOR_DATA *p_editor_data, long *p_display_line, long *p_offset,
206 sysadm 1.2 const char *str, int str_len, long *p_last_updated_line)
207     {
208 sysadm 1.3 long display_line = *p_display_line;
209     long offset = *p_offset;
210 sysadm 1.4 char *p_data_line = NULL;
211 sysadm 1.2 long len_data_line;
212     long offset_data_line;
213     long last_display_line; // of data line
214 sysadm 1.4 long line_offsets[MAX_EDITOR_DATA_LINE_LENGTH + 1];
215 sysadm 1.39 int line_widths[MAX_EDITOR_DATA_LINE_LENGTH + 1];
216 sysadm 1.4 long split_line_total;
217 sysadm 1.32 long i;
218 sysadm 1.15 int len;
219     int eol;
220     int display_len;
221 sysadm 1.2
222     if (p_editor_data == NULL || p_last_updated_line == NULL)
223     {
224 sysadm 1.46 log_error("NULL pointer error\n");
225 sysadm 1.2 return -1;
226     }
227    
228     // Get length of current data line
229     len_data_line = 0;
230     p_data_line = p_editor_data->p_display_lines[display_line];
231     for (i = display_line - 1; i >= 0; i--)
232     {
233     if (p_editor_data->display_line_lengths[i] > 0 &&
234     p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of prior data line
235     {
236     break;
237     }
238    
239     len_data_line += p_editor_data->display_line_lengths[i];
240     p_data_line = p_editor_data->p_display_lines[i];
241     }
242     offset_data_line = len_data_line + offset;
243     last_display_line = p_editor_data->display_line_total - 1;
244     for (i = display_line; i < p_editor_data->display_line_total; i++)
245     {
246     len_data_line += p_editor_data->display_line_lengths[i];
247    
248     if (p_editor_data->display_line_lengths[i] > 0 &&
249     p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of current data line
250     {
251     last_display_line = i;
252     break;
253     }
254     }
255    
256     // Split current data line if over-length
257 sysadm 1.37 if (len_data_line + str_len + 2 > MAX_EDITOR_DATA_LINE_LENGTH || str[0] == CR)
258 sysadm 1.2 {
259 sysadm 1.14 if (p_editor_data->display_line_total >= MAX_EDITOR_DATA_LINES)
260 sysadm 1.2 {
261 sysadm 1.29 #ifdef _DEBUG
262     log_error("Split line error, display_line_total(%ld) reach limit(%d)\n",
263     p_editor_data->display_line_total, MAX_EDITOR_DATA_LINES);
264     #endif
265    
266 sysadm 1.2 return -2;
267     }
268    
269     // Allocate new data line
270 sysadm 1.16 p_data_line = memory_pool_alloc(p_mp_data_line);
271 sysadm 1.4 if (p_data_line == NULL)
272 sysadm 1.2 {
273 sysadm 1.16 log_error("memory_pool_alloc() error\n");
274 sysadm 1.2 return -2;
275     }
276 sysadm 1.3
277 sysadm 1.37 if (offset_data_line + str_len + 2 >= MAX_EDITOR_DATA_LINE_LENGTH || str[0] == CR)
278 sysadm 1.2 {
279 sysadm 1.6 if (str[0] == CR)
280     {
281     str_len = 0;
282     }
283 sysadm 1.3
284 sysadm 1.4 // Copy str to new data line
285     memcpy(p_data_line, str, (size_t)str_len);
286    
287     // Copy rest part of current data line to new data line
288     memcpy(p_data_line + str_len,
289 sysadm 1.2 p_editor_data->p_display_lines[display_line] + offset,
290 sysadm 1.4 (size_t)(len_data_line - offset_data_line));
291    
292     p_data_line[str_len + len_data_line - offset_data_line] = '\0';
293 sysadm 1.2
294     // Add line ending to current display line (data line)
295     p_editor_data->p_display_lines[display_line][offset] = '\n';
296     p_editor_data->p_display_lines[display_line][offset + 1] = '\0';
297     p_editor_data->display_line_lengths[display_line] = offset + 1;
298 sysadm 1.4
299     *p_display_line = display_line + 1;
300     *p_offset = str_len;
301 sysadm 1.2 }
302 sysadm 1.6 else
303     {
304     // Copy rest part of current data line to new data line
305     memcpy(p_data_line,
306     p_editor_data->p_display_lines[display_line] + offset,
307     (size_t)(len_data_line - offset_data_line));
308    
309     p_data_line[len_data_line - offset_data_line] = '\0';
310    
311     // Append str to current display line
312     memcpy(p_editor_data->p_display_lines[display_line] + offset, str, (size_t)str_len);
313    
314     // Add line ending to current display line (data line)
315     p_editor_data->p_display_lines[display_line][offset + str_len] = '\n';
316     p_editor_data->p_display_lines[display_line][offset + str_len + 1] = '\0';
317     p_editor_data->display_line_lengths[display_line] = offset + str_len + 1;
318    
319     *p_display_line = display_line;
320     *p_offset = offset + str_len;
321     }
322 sysadm 1.2
323 sysadm 1.39 // Update display width of current display line
324     len = split_line(p_editor_data->p_display_lines[display_line], SCREEN_COLS, &eol, &display_len, 0);
325     p_editor_data->display_line_widths[display_line] = display_len;
326    
327 sysadm 1.4 split_line_total = last_display_line - display_line + 3;
328    
329     // Set start display_line for spliting new data line
330 sysadm 1.2 display_line++;
331 sysadm 1.4
332     *p_last_updated_line = p_editor_data->display_line_total;
333 sysadm 1.2 }
334 sysadm 1.4 else // insert str into current data line at offset_data_line
335 sysadm 1.2 {
336 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));
337     memcpy(p_data_line + offset_data_line, str, (size_t)str_len);
338     p_data_line[len_data_line + str_len] = '\0';
339 sysadm 1.3
340 sysadm 1.4 // Set p_data_line to head of current display line
341     p_data_line = p_editor_data->p_display_lines[display_line];
342     split_line_total = last_display_line - display_line + 3;
343 sysadm 1.3
344 sysadm 1.4 *p_display_line = display_line;
345     *p_offset = offset + str_len;
346 sysadm 1.2 }
347    
348 sysadm 1.4 // Split current data line since beginning of current display line
349 sysadm 1.39 split_line_total = split_data_lines(p_data_line, SCREEN_COLS, line_offsets, split_line_total, 0, line_widths);
350 sysadm 1.2
351 sysadm 1.4 for (i = 0; i < split_line_total; i++)
352 sysadm 1.2 {
353 sysadm 1.4 if (display_line + i > last_display_line)
354 sysadm 1.2 {
355 sysadm 1.4 // Insert blank display line after last_display_line
356     if (p_editor_data->display_line_total >= MAX_EDITOR_DATA_LINES)
357     {
358 sysadm 1.29 #ifdef _DEBUG
359     log_error("display_line_total over limit %d >= %d\n", p_editor_data->display_line_total, MAX_EDITOR_DATA_LINES);
360     #endif
361    
362 sysadm 1.15 // Terminate prior display line with \n, to avoid error on cleanup
363     if (display_line + i - 1 >= 0 && p_editor_data->display_line_lengths[display_line + i - 1] > 0)
364     {
365 sysadm 1.24 len = split_line(p_editor_data->p_display_lines[display_line + i - 1], SCREEN_COLS - 1, &eol, &display_len, 0);
366 sysadm 1.15 p_editor_data->p_display_lines[display_line + i - 1][len] = '\n';
367     p_editor_data->p_display_lines[display_line + i - 1][len + 1] = '\0';
368     p_editor_data->display_line_lengths[display_line + i - 1] = len + 1;
369 sysadm 1.39 p_editor_data->display_line_widths[display_line + i - 1] = display_len;
370 sysadm 1.15 }
371     if (*p_offset >= p_editor_data->display_line_lengths[*p_display_line])
372     {
373     *p_offset = p_editor_data->display_line_lengths[*p_display_line] - 1;
374     }
375     break;
376 sysadm 1.4 }
377 sysadm 1.32
378     // for (j = p_editor_data->display_line_total; j > last_display_line + 1; j--)
379     // {
380     // p_editor_data->p_display_lines[j] = p_editor_data->p_display_lines[j - 1];
381     // p_editor_data->display_line_lengths[j] = p_editor_data->display_line_lengths[j - 1];
382 sysadm 1.39 // p_editor_data->display_line_widths[j] = p_editor_data->display_line_widths[j - 1];
383 sysadm 1.32 // }
384     memmove(p_editor_data->p_display_lines + last_display_line + 2,
385     p_editor_data->p_display_lines + last_display_line + 1,
386     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
387     sizeof(p_editor_data->p_display_lines[last_display_line + 1]));
388     memmove(p_editor_data->display_line_lengths + last_display_line + 2,
389     p_editor_data->display_line_lengths + last_display_line + 1,
390     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
391     sizeof(p_editor_data->display_line_lengths[last_display_line + 1]));
392 sysadm 1.39 memmove(p_editor_data->display_line_widths + last_display_line + 2,
393     p_editor_data->display_line_widths + last_display_line + 1,
394     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
395     sizeof(p_editor_data->display_line_widths[last_display_line + 1]));
396 sysadm 1.32
397 sysadm 1.4 last_display_line++;
398 sysadm 1.32 *p_last_updated_line = p_editor_data->display_line_total;
399 sysadm 1.4 (p_editor_data->display_line_total)++;
400 sysadm 1.2 }
401    
402 sysadm 1.4 p_editor_data->display_line_lengths[display_line + i] = line_offsets[i + 1] - line_offsets[i];
403 sysadm 1.39 p_editor_data->display_line_widths[display_line + i] = line_widths[i];
404 sysadm 1.4 p_editor_data->p_display_lines[display_line + i] =
405     (i == 0
406     ? p_data_line
407     : (p_editor_data->p_display_lines[display_line + i - 1] + p_editor_data->display_line_lengths[display_line + i - 1]));
408 sysadm 1.2
409 sysadm 1.4 if (p_editor_data->display_line_lengths[display_line + i] > 0 &&
410     p_editor_data->p_display_lines[display_line + i][p_editor_data->display_line_lengths[display_line + i] - 1] == '\n')
411 sysadm 1.3 {
412 sysadm 1.4 break;
413 sysadm 1.3 }
414 sysadm 1.4 }
415 sysadm 1.3
416 sysadm 1.7 *p_last_updated_line = MAX(display_line + MIN(i, split_line_total - 1), *p_last_updated_line);
417 sysadm 1.2
418 sysadm 1.14 if (*p_offset >= p_editor_data->display_line_lengths[*p_display_line])
419 sysadm 1.3 {
420 sysadm 1.18 if (*p_display_line + 1 < p_editor_data->display_line_total)
421 sysadm 1.15 {
422 sysadm 1.18 *p_offset -= p_editor_data->display_line_lengths[*p_display_line];
423 sysadm 1.15 (*p_display_line)++;
424     }
425 sysadm 1.22 }
426    
427     // Prevent the last display line from being over-length
428     if (p_editor_data->display_line_total == MAX_EDITOR_DATA_LINES)
429     {
430 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);
431 sysadm 1.22 p_editor_data->p_display_lines[p_editor_data->display_line_total - 1][len] = '\0';
432     p_editor_data->display_line_lengths[p_editor_data->display_line_total - 1] = len;
433 sysadm 1.39 p_editor_data->display_line_widths[p_editor_data->display_line_total - 1] = display_len;
434 sysadm 1.22 if (*p_display_line + 1 >= p_editor_data->display_line_total)
435 sysadm 1.20 {
436 sysadm 1.22 *p_offset = MIN(*p_offset, len);
437     *p_display_line = p_editor_data->display_line_total - 1;
438 sysadm 1.20 }
439 sysadm 1.3 }
440    
441 sysadm 1.4 return 0;
442 sysadm 1.2 }
443    
444 sysadm 1.23 int editor_data_delete(EDITOR_DATA *p_editor_data, long *p_display_line, long *p_offset,
445 sysadm 1.49 long *p_last_updated_line, int del_line)
446 sysadm 1.2 {
447 sysadm 1.23 long display_line = *p_display_line;
448     long offset = *p_offset;
449 sysadm 1.7 char *p_data_line = NULL;
450     long len_data_line;
451     long offset_data_line;
452     long last_display_line; // of data line
453     long line_offsets[MAX_EDITOR_DATA_LINE_LENGTH + 1];
454 sysadm 1.39 int line_widths[MAX_EDITOR_DATA_LINE_LENGTH + 1];
455 sysadm 1.7 long split_line_total;
456     long i, j;
457     int str_len = 0;
458 sysadm 1.39 char c;
459 sysadm 1.7
460     if (p_editor_data == NULL || p_last_updated_line == NULL)
461     {
462 sysadm 1.46 log_error("NULL pointer error\n");
463 sysadm 1.7 return -1;
464     }
465    
466     // Get length of current data line
467     len_data_line = 0;
468     p_data_line = p_editor_data->p_display_lines[display_line];
469     for (i = display_line - 1; i >= 0; i--)
470     {
471     if (p_editor_data->display_line_lengths[i] > 0 &&
472     p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of prior data line
473     {
474     break;
475     }
476    
477     len_data_line += p_editor_data->display_line_lengths[i];
478     p_data_line = p_editor_data->p_display_lines[i];
479     }
480     offset_data_line = len_data_line + offset;
481     last_display_line = p_editor_data->display_line_total - 1;
482     for (i = display_line; i < p_editor_data->display_line_total; i++)
483     {
484     len_data_line += p_editor_data->display_line_lengths[i];
485    
486     if (p_editor_data->display_line_lengths[i] > 0 &&
487     p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of current data line
488     {
489     last_display_line = i;
490     break;
491     }
492     }
493    
494 sysadm 1.18 if (offset_data_line >= len_data_line) // end-of-line
495     {
496     return 0;
497     }
498    
499 sysadm 1.7 // Check str to be deleted
500 sysadm 1.49 if (del_line)
501     {
502     str_len = (int)(p_editor_data->display_line_lengths[display_line] - offset);
503     }
504     else if (p_data_line[offset_data_line] > 0 && p_data_line[offset_data_line] < 127)
505 sysadm 1.7 {
506     str_len = 1;
507     }
508 sysadm 1.48 else if (p_data_line[offset_data_line] & 0x80) // head of multi-byte character
509 sysadm 1.7 {
510 sysadm 1.39 str_len = 1;
511 sysadm 1.48 c = (p_data_line[offset_data_line] & 0x70) << 1;
512     while (c & 0x80)
513 sysadm 1.39 {
514     str_len++;
515 sysadm 1.48 c = (c & 0x7f) << 1;
516 sysadm 1.39 }
517 sysadm 1.7 }
518     else
519     {
520 sysadm 1.18 log_error("Some strange character at display_line %ld, offset %ld: %d %d\n",
521     display_line, offset, p_data_line[offset_data_line], p_data_line[offset_data_line + 1]);
522 sysadm 1.10 str_len = 1;
523 sysadm 1.7 }
524    
525     // Current display line is (almost) empty
526     if (offset_data_line + str_len > len_data_line ||
527 sysadm 1.49 (offset_data_line + str_len == len_data_line &&
528     p_data_line[del_line ? len_data_line - 1 : offset_data_line] == '\n'))
529 sysadm 1.7 {
530 sysadm 1.9 if (display_line + 1 >= p_editor_data->display_line_total) // No additional display line (data line)
531     {
532     return 0;
533     }
534    
535     len_data_line = 0; // Next data line
536     last_display_line = p_editor_data->display_line_total - 1;
537     for (i = display_line + 1; i < p_editor_data->display_line_total; i++)
538     {
539     len_data_line += p_editor_data->display_line_lengths[i];
540    
541     if (p_editor_data->display_line_lengths[i] > 0 &&
542     p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of current data line
543     {
544     last_display_line = i;
545     break;
546     }
547     }
548    
549     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
550     {
551     return 0;
552     }
553    
554     // Append next data line to current one
555     memcpy(p_data_line + offset_data_line, p_editor_data->p_display_lines[display_line + 1], (size_t)len_data_line);
556     p_data_line[offset_data_line + len_data_line] = '\0';
557    
558     // Recycle next data line
559 sysadm 1.16 memory_pool_free(p_mp_data_line, p_editor_data->p_display_lines[display_line + 1]);
560 sysadm 1.9 }
561     else
562     {
563     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));
564     p_data_line[len_data_line - str_len] = '\0';
565     len_data_line -= str_len;
566 sysadm 1.7 }
567    
568     // Set p_data_line to head of current display line
569     p_data_line = p_editor_data->p_display_lines[display_line];
570     split_line_total = last_display_line - display_line + 2;
571    
572     // Split current data line since beginning of current display line
573 sysadm 1.39 split_line_total = split_data_lines(p_data_line, SCREEN_COLS, line_offsets, split_line_total, 0, line_widths);
574 sysadm 1.7
575     for (i = 0; i < split_line_total; i++)
576     {
577     p_editor_data->display_line_lengths[display_line + i] = line_offsets[i + 1] - line_offsets[i];
578 sysadm 1.39 p_editor_data->display_line_widths[display_line + i] = line_widths[i];
579 sysadm 1.7 p_editor_data->p_display_lines[display_line + i] =
580     (i == 0
581     ? p_data_line
582     : (p_editor_data->p_display_lines[display_line + i - 1] + p_editor_data->display_line_lengths[display_line + i - 1]));
583    
584     if (p_editor_data->display_line_lengths[display_line + i] > 0 &&
585     p_editor_data->p_display_lines[display_line + i][p_editor_data->display_line_lengths[display_line + i] - 1] == '\n')
586     {
587     break;
588     }
589     }
590    
591     *p_last_updated_line = display_line + MIN(i, split_line_total - 1);
592    
593 sysadm 1.18 if (*p_last_updated_line < last_display_line)
594 sysadm 1.7 {
595     // Remove redundant display line after last_display_line
596 sysadm 1.32 // for (j = last_display_line + 1; j < p_editor_data->display_line_total; j++)
597     // {
598     // p_editor_data->p_display_lines[j - (last_display_line - *p_last_updated_line)] = p_editor_data->p_display_lines[j];
599     // p_editor_data->display_line_lengths[j - (last_display_line - *p_last_updated_line)] = p_editor_data->display_line_lengths[j];
600 sysadm 1.39 // p_editor_data->display_line_widths[j - (last_display_line - *p_last_updated_line)] = p_editor_data->display_line_widths[j];
601 sysadm 1.32 // }
602     memmove(p_editor_data->p_display_lines + *p_last_updated_line + 1,
603     p_editor_data->p_display_lines + last_display_line + 1,
604     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
605     sizeof(p_editor_data->p_display_lines[last_display_line + 1]));
606     memmove(p_editor_data->display_line_lengths + *p_last_updated_line + 1,
607     p_editor_data->display_line_lengths + last_display_line + 1,
608     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
609     sizeof(p_editor_data->display_line_lengths[last_display_line + 1]));
610 sysadm 1.39 memmove(p_editor_data->display_line_widths + *p_last_updated_line + 1,
611     p_editor_data->display_line_widths + last_display_line + 1,
612     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
613     sizeof(p_editor_data->display_line_widths[last_display_line + 1]));
614 sysadm 1.7
615 sysadm 1.18 j = p_editor_data->display_line_total;
616     (p_editor_data->display_line_total) -= (last_display_line - *p_last_updated_line);
617     *p_last_updated_line = MAX(j - 1, *p_last_updated_line);
618 sysadm 1.7 }
619    
620 sysadm 1.23 // Return real offset
621     *p_offset = offset;
622    
623 sysadm 1.9 return str_len;
624 sysadm 1.2 }
625    
626     static int editor_display_key_handler(int *p_key, EDITOR_CTX *p_ctx)
627 sysadm 1.1 {
628     switch (*p_key)
629     {
630     case 0: // Set msg
631     snprintf(p_ctx->msg, sizeof(p_ctx->msg),
632 sysadm 1.55 "| 退出[\033[32mCtrl-W\033[33m] | [\033[32m%s\033[33m]",
633     (UTF8_fixed_width ? "定宽" : "变宽"));
634 sysadm 1.1 break;
635 sysadm 1.24 case KEY_CSI:
636     *p_key = KEY_ESC;
637     break;
638 sysadm 1.1 }
639    
640     return 0;
641     }
642    
643     int editor_display(EDITOR_DATA *p_editor_data)
644     {
645     static int show_help = 1;
646     char buffer[MAX_EDITOR_DATA_LINE_LENGTH];
647 sysadm 1.2 EDITOR_CTX ctx;
648 sysadm 1.1 int ch = 0;
649 sysadm 1.55 char input_str[5];
650     wchar_t wcs[2];
651 sysadm 1.39 char c;
652 sysadm 1.3 int str_len = 0;
653     int input_ok;
654     const int screen_begin_row = 1;
655 sysadm 1.14 const int screen_row_total = SCREEN_ROWS - screen_begin_row;
656     int output_current_row = screen_begin_row;
657     int output_end_row = SCREEN_ROWS - 1;
658 sysadm 1.1 long int line_current = 0;
659     long int len;
660     int loop;
661     int eol, display_len;
662     long row_pos = 1, col_pos = 1;
663 sysadm 1.3 long display_line_in, offset_in;
664     long display_line_out, offset_out;
665     int scroll_rows;
666 sysadm 1.2 long last_updated_line = 0;
667 sysadm 1.8 int key_insert = 1;
668 sysadm 1.12 int i, j;
669     char *p_str;
670 sysadm 1.49 int del_line;
671 sysadm 1.1
672 sysadm 1.14 clrline(output_current_row, SCREEN_ROWS);
673 sysadm 1.1
674     // update msg_ext with extended key handler
675     if (editor_display_key_handler(&ch, &ctx) != 0)
676     {
677     return ch;
678     }
679    
680 sysadm 1.35 for (loop = 1; !SYS_server_exit && loop;)
681 sysadm 1.1 {
682 sysadm 1.14 if (line_current >= p_editor_data->display_line_total || output_current_row > output_end_row)
683 sysadm 1.1 {
684 sysadm 1.14 ctx.line_cursor = line_current - output_current_row + row_pos + 1;
685 sysadm 1.1
686     snprintf(buffer, sizeof(buffer),
687 sysadm 1.2 "\033[1;44;33m[\033[32m%ld\033[33m;\033[32m%ld\033[33m] "
688 sysadm 1.39 "第\033[32m%ld\033[33m/\033[32m%ld\033[33m行 [\033[32m%s\033[33m] "
689 sysadm 1.2 "%s",
690     row_pos, col_pos,
691     ctx.line_cursor, p_editor_data->display_line_total,
692 sysadm 1.39 key_insert ? "插入" : "替换",
693 sysadm 1.1 ctx.msg);
694    
695 sysadm 1.24 len = split_line(buffer, SCREEN_COLS, &eol, &display_len, 1);
696 sysadm 1.1 for (; display_len < SCREEN_COLS; display_len++)
697     {
698     buffer[len++] = ' ';
699     }
700     buffer[len] = '\0';
701     strncat(buffer, "\033[m", sizeof(buffer) - 1 - strnlen(buffer, sizeof(buffer)));
702    
703     moveto(SCREEN_ROWS, 0);
704     prints("%s", buffer);
705    
706     moveto((int)row_pos, (int)col_pos);
707     iflush();
708    
709 sysadm 1.25 str_len = 0;
710 sysadm 1.53 ch = igetch_t(BBS_max_user_idle_time);
711 sysadm 1.33 while (!SYS_server_exit)
712 sysadm 1.1 {
713 sysadm 1.47 if (ch != KEY_NULL && ch != KEY_TIMEOUT)
714     {
715     BBS_last_access_tm = time(NULL);
716     }
717    
718 sysadm 1.1 // extended key handler
719     if (editor_display_key_handler(&ch, &ctx) != 0)
720     {
721     goto cleanup;
722     }
723    
724 sysadm 1.48 if (ch < 256 && (ch & 0x80)) // head of multi-byte character
725 sysadm 1.3 {
726     str_len = 0;
727 sysadm 1.48 c = (char)(ch & 0xf0);
728     while (c & 0x80)
729 sysadm 1.39 {
730     input_str[str_len] = (char)(ch - 256);
731     str_len++;
732 sysadm 1.48 c = (c & 0x7f) << 1;
733 sysadm 1.39
734 sysadm 1.48 if ((c & 0x80) == 0) // Input completed
735 sysadm 1.39 {
736     break;
737     }
738    
739     // Expect additional bytes of input
740     ch = igetch(100); // 0.1 second
741     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
742     {
743 sysadm 1.40 #ifdef _DEBUG
744 sysadm 1.39 log_error("Ignore %d bytes of incomplete UTF8 character\n", str_len);
745 sysadm 1.40 #endif
746 sysadm 1.39 str_len = 0;
747     break;
748     }
749     }
750 sysadm 1.55 input_str[str_len] = '\0';
751 sysadm 1.3 }
752    
753 sysadm 1.39 if ((ch >= 32 && ch < 127) || str_len >= 2 || // Printable character or multi-byte character
754     ch == CR || ch == KEY_ESC) // Special character
755 sysadm 1.2 {
756 sysadm 1.43 // Refresh current action while user input
757     if (user_online_update(NULL) < 0)
758     {
759     log_error("user_online_update(NULL) error\n");
760     }
761    
762 sysadm 1.21 if (str_len == 0) // ch >= 32 && ch < 127
763 sysadm 1.3 {
764 sysadm 1.4 input_str[0] = (char)ch;
765 sysadm 1.3 str_len = 1;
766     }
767    
768 sysadm 1.14 display_line_in = line_current - output_current_row + row_pos;
769 sysadm 1.39 offset_in = split_line(p_editor_data->p_display_lines[display_line_in], (int)col_pos - 1, &eol, &display_len, 0);
770 sysadm 1.3 display_line_out = display_line_in;
771     offset_out = offset_in;
772 sysadm 1.2
773 sysadm 1.32 last_updated_line = display_line_in;
774    
775 sysadm 1.8 if (!key_insert) // overwrite
776     {
777 sysadm 1.23 if (editor_data_delete(p_editor_data, &display_line_out, &offset_out,
778 sysadm 1.49 &last_updated_line, 0) < 0)
779 sysadm 1.8 {
780     log_error("editor_data_delete() error\n");
781     }
782     }
783    
784 sysadm 1.3 if (editor_data_insert(p_editor_data, &display_line_out, &offset_out,
785 sysadm 1.4 input_str, str_len, &last_updated_line) < 0)
786 sysadm 1.2 {
787 sysadm 1.14 log_error("editor_data_insert(str_len=%d) error\n", str_len);
788 sysadm 1.2 }
789     else
790     {
791 sysadm 1.14 output_end_row = MIN(SCREEN_ROWS - 1, output_current_row + (int)(last_updated_line - line_current));
792     line_current -= (output_current_row - row_pos);
793     output_current_row = (int)row_pos;
794 sysadm 1.2
795 sysadm 1.14 scroll_rows = MAX(0, (int)(display_line_out - display_line_in) - (output_end_row - output_current_row));
796 sysadm 1.2
797 sysadm 1.3 if (scroll_rows > 0)
798 sysadm 1.2 {
799 sysadm 1.3 moveto(SCREEN_ROWS, 0);
800     clrtoeol();
801     for (i = 0; i < scroll_rows; i++)
802     {
803 sysadm 1.36 // prints("\033[S"); // Scroll up 1 line
804     prints("\n"); // Legacy Cterm only works with this line
805 sysadm 1.3 }
806 sysadm 1.2
807 sysadm 1.14 output_current_row -= scroll_rows;
808     if (output_current_row < screen_begin_row)
809 sysadm 1.2 {
810 sysadm 1.14 line_current += (screen_begin_row - output_current_row);
811     output_current_row = screen_begin_row;
812 sysadm 1.2 }
813 sysadm 1.14 row_pos = output_end_row;
814 sysadm 1.3 }
815     else // if (scroll_lines == 0)
816     {
817     row_pos += (display_line_out - display_line_in);
818 sysadm 1.2 }
819 sysadm 1.39
820     if (offset_out != offset_in)
821     {
822     if (display_line_out != display_line_in)
823     {
824     col_pos = 1;
825     }
826 sysadm 1.42 if (offset_out > 0)
827 sysadm 1.39 {
828 sysadm 1.55 if (mbstowcs(wcs, input_str, 1) == (size_t)-1)
829     {
830     log_error("mbstowcs() error\n");
831     }
832     col_pos += (str_len == 1 ? 1 : (UTF8_fixed_width ? 2 : wcwidth(wcs[0])));
833 sysadm 1.39 }
834     }
835 sysadm 1.11 }
836 sysadm 1.3
837 sysadm 1.25 if (display_line_out != display_line_in) // Output on line change
838     {
839     break;
840     }
841    
842     ch = igetch(0);
843     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Output if no futher input
844     {
845     break;
846     }
847    
848 sysadm 1.21 str_len = 0;
849 sysadm 1.11 continue;
850 sysadm 1.2 }
851 sysadm 1.49 else if (ch == KEY_DEL || ch == BACKSPACE || ch == Ctrl('K') || ch == Ctrl('Y')) // Del
852 sysadm 1.2 {
853 sysadm 1.43 // Refresh current action while user input
854     if (user_online_update(NULL) < 0)
855     {
856     log_error("user_online_update(NULL) error\n");
857     }
858    
859 sysadm 1.49 del_line = 0;
860    
861 sysadm 1.9 if (ch == BACKSPACE)
862     {
863 sysadm 1.18 if (line_current - output_current_row + row_pos <= 0 && col_pos <= 1) // Forbidden
864     {
865 sysadm 1.34 break; // force output prior operation result if any
866 sysadm 1.18 }
867    
868 sysadm 1.39 offset_in = split_line(p_editor_data->p_display_lines[line_current - output_current_row + row_pos],
869     (int)col_pos - 1, &eol, &display_len, 0);
870 sysadm 1.55 col_pos = display_len;
871 sysadm 1.14 if (col_pos < 1 && line_current - output_current_row + row_pos >= 0)
872 sysadm 1.9 {
873     row_pos--;
874 sysadm 1.39 col_pos = MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]);
875 sysadm 1.9 }
876     }
877 sysadm 1.49 else if (ch == Ctrl('K'))
878     {
879     del_line = 1;
880     }
881     else if (ch == Ctrl('Y'))
882     {
883     col_pos = 1;
884     del_line = 1;
885     }
886 sysadm 1.2
887 sysadm 1.23 display_line_in = line_current - output_current_row + row_pos;
888 sysadm 1.39 offset_in = split_line(p_editor_data->p_display_lines[display_line_in], (int)col_pos - 1, &eol, &display_len, 0);
889 sysadm 1.23 display_line_out = display_line_in;
890     offset_out = offset_in;
891    
892     if ((str_len = editor_data_delete(p_editor_data, &display_line_out, &offset_out,
893 sysadm 1.49 &last_updated_line, del_line)) < 0)
894 sysadm 1.2 {
895 sysadm 1.49 log_error("editor_data_delete() error: %d\n", str_len);
896 sysadm 1.2 }
897     else
898     {
899 sysadm 1.39 col_pos = display_len + 1; // Set col_pos to accurate pos
900 sysadm 1.9
901 sysadm 1.14 output_end_row = MIN(SCREEN_ROWS - 1, output_current_row + (int)(last_updated_line - line_current));
902     line_current -= (output_current_row - row_pos);
903     output_current_row = (int)row_pos;
904 sysadm 1.9
905 sysadm 1.14 if (output_current_row < screen_begin_row) // row_pos <= 0
906 sysadm 1.9 {
907 sysadm 1.14 output_current_row = screen_begin_row;
908 sysadm 1.9 row_pos = screen_begin_row;
909 sysadm 1.14 output_end_row = SCREEN_ROWS - 1;
910     }
911    
912     // Exceed end
913     if (line_current + (screen_row_total - output_current_row) >= p_editor_data->display_line_total &&
914     p_editor_data->display_line_total > screen_row_total)
915     {
916     scroll_rows = (int)((line_current - (output_current_row - screen_begin_row)) -
917     (p_editor_data->display_line_total - screen_row_total));
918    
919     line_current = p_editor_data->display_line_total - screen_row_total;
920     row_pos += scroll_rows;
921     output_current_row = screen_begin_row;
922     output_end_row = SCREEN_ROWS - 1;
923 sysadm 1.9 }
924 sysadm 1.18
925     clrline(output_current_row, output_end_row);
926 sysadm 1.2 }
927    
928 sysadm 1.25 if (display_line_out != display_line_in) // Output on line change
929     {
930     break;
931     }
932    
933     ch = igetch(0);
934     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Output if no futher input
935     {
936     break;
937     }
938    
939 sysadm 1.21 str_len = 0;
940 sysadm 1.2 continue;
941     }
942    
943 sysadm 1.25 input_ok = 1;
944 sysadm 1.1 switch (ch)
945     {
946     case KEY_NULL:
947 sysadm 1.47 log_error("KEY_NULL\n");
948     goto cleanup;
949 sysadm 1.1 case KEY_TIMEOUT:
950 sysadm 1.47 log_error("User input timeout\n");
951 sysadm 1.1 goto cleanup;
952 sysadm 1.17 case Ctrl('W'):
953 sysadm 1.41 case Ctrl('X'):
954 sysadm 1.1 loop = 0;
955     break;
956 sysadm 1.13 case Ctrl('S'): // Start of line
957 sysadm 1.2 case KEY_CTRL_LEFT:
958 sysadm 1.1 col_pos = 1;
959     break;
960 sysadm 1.13 case Ctrl('E'): // End of line
961 sysadm 1.2 case KEY_CTRL_RIGHT:
962 sysadm 1.23 if (line_current - output_current_row + row_pos == p_editor_data->display_line_total - 1) // row_pos at end line
963 sysadm 1.22 {
964     // last display line does NOT have \n in the end
965 sysadm 1.39 col_pos = p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1;
966 sysadm 1.22 break;
967     }
968 sysadm 1.39 col_pos = MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]);
969 sysadm 1.1 break;
970 sysadm 1.13 case Ctrl('T'): // Top of screen
971 sysadm 1.2 case KEY_CTRL_UP:
972 sysadm 1.3 row_pos = screen_begin_row;
973 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
974 sysadm 1.2 break;
975 sysadm 1.13 case Ctrl('B'): // Bottom of screen
976 sysadm 1.2 case KEY_CTRL_DOWN:
977 sysadm 1.18 if (p_editor_data->display_line_total < screen_row_total)
978     {
979     row_pos = p_editor_data->display_line_total;
980     }
981     else
982     {
983     row_pos = SCREEN_ROWS - 1;
984     }
985     if (line_current + (screen_row_total - (output_current_row - screen_begin_row)) >= p_editor_data->display_line_total) // Reach end
986     {
987     // last display line does NOT have \n in the end
988 sysadm 1.39 col_pos = MIN(col_pos, p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1);
989 sysadm 1.18 }
990     else
991     {
992 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
993 sysadm 1.18 }
994 sysadm 1.2 break;
995     case KEY_INS:
996 sysadm 1.8 key_insert = !key_insert;
997 sysadm 1.2 break;
998 sysadm 1.1 case KEY_HOME:
999     row_pos = 1;
1000     col_pos = 1;
1001 sysadm 1.14 if (line_current - output_current_row < 0) // Reach begin
1002 sysadm 1.1 {
1003     break;
1004     }
1005     line_current = 0;
1006 sysadm 1.14 output_current_row = screen_begin_row;
1007     output_end_row = SCREEN_ROWS - 1;
1008     clrline(output_current_row, SCREEN_ROWS);
1009 sysadm 1.1 break;
1010     case KEY_END:
1011 sysadm 1.3 if (p_editor_data->display_line_total < screen_row_total)
1012 sysadm 1.1 {
1013     row_pos = p_editor_data->display_line_total;
1014 sysadm 1.39 col_pos = p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1;
1015 sysadm 1.1 break;
1016     }
1017 sysadm 1.3 line_current = p_editor_data->display_line_total - screen_row_total;
1018 sysadm 1.14 output_current_row = screen_begin_row;
1019     output_end_row = SCREEN_ROWS - 1;
1020     row_pos = SCREEN_ROWS - 1;
1021 sysadm 1.39 col_pos = p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1;
1022 sysadm 1.14 clrline(output_current_row, SCREEN_ROWS);
1023 sysadm 1.1 break;
1024     case KEY_LEFT:
1025 sysadm 1.39 offset_in = split_line(p_editor_data->p_display_lines[line_current - output_current_row + row_pos],
1026     (int)col_pos - 1, &eol, &display_len, 0);
1027 sysadm 1.55 col_pos = display_len;
1028 sysadm 1.39 if (offset_in >= 1 && p_editor_data->p_display_lines[line_current - output_current_row + row_pos][offset_in - 1] < 0) // UTF8
1029     {
1030 sysadm 1.55 split_line(p_editor_data->p_display_lines[line_current - output_current_row + row_pos],
1031     (int)col_pos - 1, &eol, &display_len, 0);
1032     if (display_len == col_pos - 2)
1033     {
1034     col_pos--;
1035     }
1036 sysadm 1.39 }
1037     if (col_pos >= 1)
1038 sysadm 1.1 {
1039     break;
1040     }
1041     col_pos = SCREEN_COLS; // continue to KEY_UP
1042     case KEY_UP:
1043 sysadm 1.3 if (row_pos > screen_begin_row)
1044 sysadm 1.1 {
1045     row_pos--;
1046 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1047 sysadm 1.1 break;
1048     }
1049 sysadm 1.14 if (line_current - output_current_row < 0) // Reach begin
1050 sysadm 1.1 {
1051 sysadm 1.2 col_pos = 1;
1052 sysadm 1.1 break;
1053     }
1054 sysadm 1.14 line_current -= output_current_row;
1055     output_current_row = screen_begin_row;
1056 sysadm 1.1 // screen_end_line = begin_line;
1057     // prints("\033[T"); // Scroll down 1 line
1058 sysadm 1.14 output_end_row = SCREEN_ROWS - 1; // Legacy Fterm only works with this line
1059 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1060 sysadm 1.1 break;
1061     case KEY_RIGHT:
1062 sysadm 1.39 offset_in = split_line(p_editor_data->p_display_lines[line_current - output_current_row + row_pos],
1063     (int)col_pos - 1, &eol, &display_len, 0);
1064 sysadm 1.55 col_pos = display_len + 2;
1065 sysadm 1.39 if (offset_in < p_editor_data->display_line_lengths[line_current - output_current_row + row_pos] &&
1066     p_editor_data->p_display_lines[line_current - output_current_row + row_pos][offset_in] < 0) // UTF8
1067     {
1068 sysadm 1.55 split_line(p_editor_data->p_display_lines[line_current - output_current_row + row_pos] + offset_in,
1069     1, &eol, &display_len, 0);
1070     if (display_len == 0)
1071     {
1072     col_pos++;
1073     }
1074 sysadm 1.39 }
1075     if (col_pos <= p_editor_data->display_line_widths[line_current - output_current_row + row_pos])
1076 sysadm 1.1 {
1077     break;
1078     }
1079     col_pos = 1; // continue to KEY_DOWN
1080     case KEY_DOWN:
1081 sysadm 1.3 if (row_pos < MIN(screen_row_total, p_editor_data->display_line_total))
1082 sysadm 1.1 {
1083     row_pos++;
1084 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1085 sysadm 1.1 break;
1086     }
1087 sysadm 1.23 if (line_current - output_current_row + row_pos == p_editor_data->display_line_total - 1) // row_pos at end line
1088 sysadm 1.1 {
1089 sysadm 1.18 // last display line does NOT have \n in the end
1090 sysadm 1.39 col_pos = p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1;
1091 sysadm 1.1 break;
1092     }
1093 sysadm 1.14 line_current += (screen_row_total - (output_current_row - screen_begin_row));
1094     output_current_row = screen_row_total;
1095     output_end_row = SCREEN_ROWS - 1;
1096 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1097 sysadm 1.1 moveto(SCREEN_ROWS, 0);
1098     clrtoeol();
1099 sysadm 1.36 // prints("\033[S"); // Scroll up 1 line
1100     prints("\n"); // Legacy Cterm only works with this line
1101 sysadm 1.1 break;
1102     case KEY_PGUP:
1103 sysadm 1.14 if (line_current - output_current_row < 0) // Reach begin
1104 sysadm 1.1 {
1105     break;
1106     }
1107 sysadm 1.14 line_current -= ((screen_row_total - 1) + (output_current_row - screen_begin_row));
1108 sysadm 1.1 if (line_current < 0)
1109     {
1110     line_current = 0;
1111     }
1112 sysadm 1.14 output_current_row = screen_begin_row;
1113     output_end_row = SCREEN_ROWS - 1;
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 1.14 clrline(output_current_row, SCREEN_ROWS);
1116 sysadm 1.1 break;
1117     case KEY_PGDN:
1118 sysadm 1.14 if (line_current + screen_row_total - (output_current_row - screen_begin_row) >= p_editor_data->display_line_total) // Reach end
1119 sysadm 1.1 {
1120     break;
1121     }
1122 sysadm 1.14 line_current += (screen_row_total - 1) - (output_current_row - screen_begin_row);
1123 sysadm 1.3 if (line_current + screen_row_total > p_editor_data->display_line_total) // No enough lines to display
1124 sysadm 1.1 {
1125 sysadm 1.3 line_current = p_editor_data->display_line_total - screen_row_total;
1126 sysadm 1.1 }
1127 sysadm 1.14 output_current_row = screen_begin_row;
1128     output_end_row = SCREEN_ROWS - 1;
1129 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1130 sysadm 1.14 clrline(output_current_row, SCREEN_ROWS);
1131 sysadm 1.1 break;
1132 sysadm 1.44 case Ctrl('Q'):
1133 sysadm 1.1 case KEY_F1:
1134 sysadm 1.50 if (!show_help) // Not re-entrant
1135 sysadm 1.1 {
1136     break;
1137     }
1138     // Display help information
1139     show_help = 0;
1140 sysadm 1.50 display_file(DATA_EDITOR_HELP, 1);
1141 sysadm 1.1 show_help = 1;
1142     case KEY_F5:
1143     // Refresh after display help information
1144 sysadm 1.14 line_current -= (output_current_row - screen_begin_row);
1145     output_current_row = screen_begin_row;
1146     output_end_row = SCREEN_ROWS - 1;
1147     clrline(output_current_row, SCREEN_ROWS);
1148 sysadm 1.1 break;
1149     case 0: // Refresh bottom line
1150     break;
1151     default:
1152     input_ok = 0;
1153     break;
1154     }
1155    
1156 sysadm 1.43 // Refresh current action while user input
1157     if (user_online_update(NULL) < 0)
1158     {
1159     log_error("user_online_update(NULL) error\n");
1160     }
1161    
1162 sysadm 1.14 if (input_ok)
1163 sysadm 1.11 {
1164 sysadm 1.14 break;
1165 sysadm 1.11 }
1166 sysadm 1.25
1167 sysadm 1.53 ch = igetch_t(BBS_max_user_idle_time);
1168 sysadm 1.1 }
1169    
1170     continue;
1171     }
1172    
1173     len = p_editor_data->display_line_lengths[line_current];
1174     if (len >= sizeof(buffer))
1175     {
1176     log_error("Buffer overflow: len=%ld line=%ld \n", len, line_current);
1177     len = sizeof(buffer) - 1;
1178     }
1179     else if (len < 0)
1180     {
1181     log_error("Incorrect line offsets: len=%ld line=%ld \n", len, line_current);
1182     len = 0;
1183     }
1184    
1185 sysadm 1.12 // memcpy(buffer, p_editor_data->p_display_lines[line_current], (size_t)len);
1186     // Replace '\033' with '*'
1187     p_str = p_editor_data->p_display_lines[line_current];
1188     for (i = 0, j = 0; i < len; i++)
1189     {
1190     if (p_str[i] == '\033')
1191     {
1192     memcpy(buffer + j, EDITOR_ESC_DISPLAY_STR, sizeof(EDITOR_ESC_DISPLAY_STR) - 1);
1193     j += (int)(sizeof(EDITOR_ESC_DISPLAY_STR) - 1);
1194     }
1195     else
1196     {
1197     buffer[j] = p_str[i];
1198     j++;
1199     }
1200     }
1201     buffer[j] = '\0';
1202 sysadm 1.1
1203 sysadm 1.14 moveto(output_current_row, 0);
1204 sysadm 1.1 clrtoeol();
1205     prints("%s", buffer);
1206     line_current++;
1207 sysadm 1.14 output_current_row++;
1208 sysadm 1.1 }
1209    
1210     cleanup:
1211     return ch;
1212     }
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