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

Annotation of /lbbs/src/editor.c

Parent Directory Parent Directory | Revision Log Revision Log

Revision 1.49 - (hide annotations)
Sun Oct 19 07:08:29 2025 UTC (4 months, 4 weeks ago) by sysadm
Branch: MAIN
Changes since 1.48: +24 -7 lines
Content type: text/x-csrc 
Add feature to editor:
Ctrl-Y, delete current display line
Ctrl-K, delete current display line since the position of cursor
1 sysadm 1.1 /***************************************************************************
2     editor.h - description
3     -------------------
4     copyright : (C) 2004-2025 by Leaflet
5     email : leaflet@leafok.com
6     ***************************************************************************/
7    
8     /***************************************************************************
9     * *
10     * This program is free software; you can redistribute it and/or modify *
11     * it under the terms of the GNU General Public License as published by *
12     * the Free Software Foundation; either version 3 of the License, or *
13     * (at your option) any later version. *
14     * *
15     ***************************************************************************/
16    
17 sysadm 1.31 #include "bbs.h"
18     #include "common.h"
19 sysadm 1.1 #include "editor.h"
20     #include "io.h"
21     #include "log.h"
22 sysadm 1.43 #include "login.h"
23 sysadm 1.31 #include "memory_pool.h"
24 sysadm 1.1 #include "str_process.h"
25     #include <stdlib.h>
26 sysadm 1.30 #include <string.h>
27 sysadm 1.1 #include <sys/param.h>
28    
29 sysadm 1.12 #define EDITOR_ESC_DISPLAY_STR "\033[32m*\033[m"
30 sysadm 1.16 #define EDITOR_MEM_POOL_LINE_PER_CHUNK 1000
31     #define EDITOR_MEM_POOL_CHUNK_LIMIT (MAX_EDITOR_DATA_LINES / EDITOR_MEM_POOL_LINE_PER_CHUNK + 1)
32    
33     static MEMORY_POOL *p_mp_data_line;
34     static MEMORY_POOL *p_mp_editor_data;
35    
36     int editor_memory_pool_init(void)
37     {
38     if (p_mp_data_line != NULL || p_mp_editor_data != NULL)
39     {
40     log_error("Editor mem pool already initialized\n");
41     return -1;
42     }
43    
44     p_mp_data_line = memory_pool_init(MAX_EDITOR_DATA_LINE_LENGTH, EDITOR_MEM_POOL_LINE_PER_CHUNK, EDITOR_MEM_POOL_CHUNK_LIMIT);
45     if (p_mp_data_line == NULL)
46     {
47     log_error("Memory pool init error\n");
48     return -2;
49     }
50    
51     p_mp_editor_data = memory_pool_init(sizeof(EDITOR_DATA), 1, 1);
52 sysadm 1.45 if (p_mp_editor_data == NULL)
53 sysadm 1.16 {
54     log_error("Memory pool init error\n");
55     return -3;
56     }
57    
58     return 0;
59     }
60    
61     void editor_memory_pool_cleanup(void)
62     {
63     if (p_mp_data_line != NULL)
64     {
65     memory_pool_cleanup(p_mp_data_line);
66     p_mp_data_line = NULL;
67     }
68    
69     if (p_mp_editor_data != NULL)
70     {
71     memory_pool_cleanup(p_mp_editor_data);
72     p_mp_editor_data = NULL;
73     }
74     }
75 sysadm 1.12
76 sysadm 1.1 EDITOR_DATA *editor_data_load(const char *p_data)
77     {
78     EDITOR_DATA *p_editor_data;
79 sysadm 1.4 char *p_data_line = NULL;
80 sysadm 1.22 long line_offsets[MAX_EDITOR_DATA_LINES + 1];
81 sysadm 1.1 long current_data_line_length = 0;
82 sysadm 1.14 long i;
83 sysadm 1.1
84     if (p_data == NULL)
85     {
86 sysadm 1.46 log_error("NULL pointer error\n");
87 sysadm 1.1 return NULL;
88     }
89    
90 sysadm 1.16 p_editor_data = memory_pool_alloc(p_mp_editor_data);
91 sysadm 1.1 if (p_editor_data == NULL)
92     {
93 sysadm 1.16 log_error("memory_pool_alloc() error\n");
94 sysadm 1.1 return NULL;
95     }
96    
97 sysadm 1.39 p_editor_data->display_line_total = split_data_lines(p_data, SCREEN_COLS, line_offsets, MAX_EDITOR_DATA_LINES + 1,
98     0, p_editor_data->display_line_widths);
99 sysadm 1.1
100     for (i = 0; i < p_editor_data->display_line_total; i++)
101     {
102     p_editor_data->display_line_lengths[i] = line_offsets[i + 1] - line_offsets[i];
103    
104     if (i == 0 ||
105 sysadm 1.2 current_data_line_length + p_editor_data->display_line_lengths[i] + 1 > MAX_EDITOR_DATA_LINE_LENGTH ||
106 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'))
107     {
108     // Allocate new data line
109 sysadm 1.16 p_data_line = memory_pool_alloc(p_mp_data_line);
110 sysadm 1.4 if (p_data_line == NULL)
111 sysadm 1.1 {
112 sysadm 1.16 log_error("memory_pool_alloc() error: i = %d\n", i);
113 sysadm 1.1 // Cleanup
114 sysadm 1.14 editor_data_cleanup(p_editor_data);
115 sysadm 1.1 return NULL;
116     }
117    
118 sysadm 1.4 p_editor_data->p_display_lines[i] = p_data_line;
119 sysadm 1.2 current_data_line_length = 0;
120 sysadm 1.1 }
121     else
122     {
123     p_editor_data->p_display_lines[i] = p_editor_data->p_display_lines[i - 1] + p_editor_data->display_line_lengths[i - 1];
124     }
125    
126     memcpy(p_editor_data->p_display_lines[i], p_data + line_offsets[i], (size_t)p_editor_data->display_line_lengths[i]);
127     current_data_line_length += p_editor_data->display_line_lengths[i];
128 sysadm 1.19
129     // Trim \n from last line
130 sysadm 1.20 if (i + 1 == p_editor_data->display_line_total &&
131     p_editor_data->display_line_lengths[i] > 0 &&
132 sysadm 1.19 p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n')
133     {
134     p_editor_data->display_line_lengths[i]--;
135 sysadm 1.39 p_editor_data->display_line_widths[i]--;
136 sysadm 1.19 current_data_line_length--;
137     }
138 sysadm 1.4 p_data_line[current_data_line_length] = '\0';
139 sysadm 1.1 }
140    
141 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);
142 sysadm 1.4
143 sysadm 1.1 return p_editor_data;
144     }
145    
146     long editor_data_save(const EDITOR_DATA *p_editor_data, char *p_data, size_t buf_len)
147     {
148     long current_pos = 0;
149     long i;
150    
151     if (p_editor_data == NULL || p_data == NULL)
152     {
153 sysadm 1.46 log_error("NULL pointer error\n");
154 sysadm 1.1 return -1;
155     }
156    
157     for (i = 0; i < p_editor_data->display_line_total; i++)
158     {
159     if (current_pos + p_editor_data->display_line_lengths[i] + 1 > buf_len)
160     {
161     log_error("Data buffer not longer enough %d > %d\n", current_pos + p_editor_data->display_line_lengths[i] + 1, buf_len);
162     p_data[current_pos] = '\0';
163     return -2;
164     }
165    
166     memcpy(p_data + current_pos, p_editor_data->p_display_lines[i], (size_t)p_editor_data->display_line_lengths[i]);
167     current_pos += p_editor_data->display_line_lengths[i];
168     }
169    
170     p_data[current_pos] = '\0';
171    
172     return current_pos;
173     }
174    
175     void editor_data_cleanup(EDITOR_DATA *p_editor_data)
176     {
177 sysadm 1.14 char *p_data_line = NULL;
178 sysadm 1.1 long i;
179    
180     if (p_editor_data == NULL)
181     {
182     return;
183     }
184    
185 sysadm 1.14 for (i = 0; i < p_editor_data->display_line_total; i++)
186     {
187     if (p_data_line == NULL)
188     {
189     p_data_line = p_editor_data->p_display_lines[i];
190     }
191    
192     if (p_editor_data->display_line_lengths[i] > 0 &&
193     p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n')
194     {
195 sysadm 1.16 memory_pool_free(p_mp_data_line, p_data_line);
196 sysadm 1.14 p_data_line = NULL;
197     }
198     }
199    
200     if (p_data_line != NULL)
201 sysadm 1.1 {
202 sysadm 1.16 memory_pool_free(p_mp_data_line, p_data_line);
203 sysadm 1.1 }
204    
205 sysadm 1.16 memory_pool_free(p_mp_editor_data, p_editor_data);
206 sysadm 1.1 }
207    
208 sysadm 1.3 int editor_data_insert(EDITOR_DATA *p_editor_data, long *p_display_line, long *p_offset,
209 sysadm 1.2 const char *str, int str_len, long *p_last_updated_line)
210     {
211 sysadm 1.3 long display_line = *p_display_line;
212     long offset = *p_offset;
213 sysadm 1.4 char *p_data_line = NULL;
214 sysadm 1.2 long len_data_line;
215     long offset_data_line;
216     long last_display_line; // of data line
217 sysadm 1.4 long line_offsets[MAX_EDITOR_DATA_LINE_LENGTH + 1];
218 sysadm 1.39 int line_widths[MAX_EDITOR_DATA_LINE_LENGTH + 1];
219 sysadm 1.4 long split_line_total;
220 sysadm 1.32 long i;
221 sysadm 1.15 int len;
222     int eol;
223     int display_len;
224 sysadm 1.2
225     if (p_editor_data == NULL || p_last_updated_line == NULL)
226     {
227 sysadm 1.46 log_error("NULL pointer error\n");
228 sysadm 1.2 return -1;
229     }
230    
231     // Get length of current data line
232     len_data_line = 0;
233     p_data_line = p_editor_data->p_display_lines[display_line];
234     for (i = display_line - 1; i >= 0; i--)
235     {
236     if (p_editor_data->display_line_lengths[i] > 0 &&
237     p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of prior data line
238     {
239     break;
240     }
241    
242     len_data_line += p_editor_data->display_line_lengths[i];
243     p_data_line = p_editor_data->p_display_lines[i];
244     }
245     offset_data_line = len_data_line + offset;
246     last_display_line = p_editor_data->display_line_total - 1;
247     for (i = display_line; i < p_editor_data->display_line_total; i++)
248     {
249     len_data_line += p_editor_data->display_line_lengths[i];
250    
251     if (p_editor_data->display_line_lengths[i] > 0 &&
252     p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of current data line
253     {
254     last_display_line = i;
255     break;
256     }
257     }
258    
259     // Split current data line if over-length
260 sysadm 1.37 if (len_data_line + str_len + 2 > MAX_EDITOR_DATA_LINE_LENGTH || str[0] == CR)
261 sysadm 1.2 {
262 sysadm 1.14 if (p_editor_data->display_line_total >= MAX_EDITOR_DATA_LINES)
263 sysadm 1.2 {
264 sysadm 1.29 #ifdef _DEBUG
265     log_error("Split line error, display_line_total(%ld) reach limit(%d)\n",
266     p_editor_data->display_line_total, MAX_EDITOR_DATA_LINES);
267     #endif
268    
269 sysadm 1.2 return -2;
270     }
271    
272     // Allocate new data line
273 sysadm 1.16 p_data_line = memory_pool_alloc(p_mp_data_line);
274 sysadm 1.4 if (p_data_line == NULL)
275 sysadm 1.2 {
276 sysadm 1.16 log_error("memory_pool_alloc() error\n");
277 sysadm 1.2 return -2;
278     }
279 sysadm 1.3
280 sysadm 1.37 if (offset_data_line + str_len + 2 >= MAX_EDITOR_DATA_LINE_LENGTH || str[0] == CR)
281 sysadm 1.2 {
282 sysadm 1.6 if (str[0] == CR)
283     {
284     str_len = 0;
285     }
286 sysadm 1.3
287 sysadm 1.4 // Copy str to new data line
288     memcpy(p_data_line, str, (size_t)str_len);
289    
290     // Copy rest part of current data line to new data line
291     memcpy(p_data_line + str_len,
292 sysadm 1.2 p_editor_data->p_display_lines[display_line] + offset,
293 sysadm 1.4 (size_t)(len_data_line - offset_data_line));
294    
295     p_data_line[str_len + len_data_line - offset_data_line] = '\0';
296 sysadm 1.2
297     // Add line ending to current display line (data line)
298     p_editor_data->p_display_lines[display_line][offset] = '\n';
299     p_editor_data->p_display_lines[display_line][offset + 1] = '\0';
300     p_editor_data->display_line_lengths[display_line] = offset + 1;
301 sysadm 1.4
302     *p_display_line = display_line + 1;
303     *p_offset = str_len;
304 sysadm 1.2 }
305 sysadm 1.6 else
306     {
307     // Copy rest part of current data line to new data line
308     memcpy(p_data_line,
309     p_editor_data->p_display_lines[display_line] + offset,
310     (size_t)(len_data_line - offset_data_line));
311    
312     p_data_line[len_data_line - offset_data_line] = '\0';
313    
314     // Append str to current display line
315     memcpy(p_editor_data->p_display_lines[display_line] + offset, str, (size_t)str_len);
316    
317     // Add line ending to current display line (data line)
318     p_editor_data->p_display_lines[display_line][offset + str_len] = '\n';
319     p_editor_data->p_display_lines[display_line][offset + str_len + 1] = '\0';
320     p_editor_data->display_line_lengths[display_line] = offset + str_len + 1;
321    
322     *p_display_line = display_line;
323     *p_offset = offset + str_len;
324     }
325 sysadm 1.2
326 sysadm 1.39 // Update display width of current display line
327     len = split_line(p_editor_data->p_display_lines[display_line], SCREEN_COLS, &eol, &display_len, 0);
328     p_editor_data->display_line_widths[display_line] = display_len;
329    
330 sysadm 1.4 split_line_total = last_display_line - display_line + 3;
331    
332     // Set start display_line for spliting new data line
333 sysadm 1.2 display_line++;
334 sysadm 1.4
335     *p_last_updated_line = p_editor_data->display_line_total;
336 sysadm 1.2 }
337 sysadm 1.4 else // insert str into current data line at offset_data_line
338 sysadm 1.2 {
339 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));
340     memcpy(p_data_line + offset_data_line, str, (size_t)str_len);
341     p_data_line[len_data_line + str_len] = '\0';
342 sysadm 1.3
343 sysadm 1.4 // Set p_data_line to head of current display line
344     p_data_line = p_editor_data->p_display_lines[display_line];
345     split_line_total = last_display_line - display_line + 3;
346 sysadm 1.3
347 sysadm 1.4 *p_display_line = display_line;
348     *p_offset = offset + str_len;
349 sysadm 1.2 }
350    
351 sysadm 1.4 // Split current data line since beginning of current display line
352 sysadm 1.39 split_line_total = split_data_lines(p_data_line, SCREEN_COLS, line_offsets, split_line_total, 0, line_widths);
353 sysadm 1.2
354 sysadm 1.4 for (i = 0; i < split_line_total; i++)
355 sysadm 1.2 {
356 sysadm 1.4 if (display_line + i > last_display_line)
357 sysadm 1.2 {
358 sysadm 1.4 // Insert blank display line after last_display_line
359     if (p_editor_data->display_line_total >= MAX_EDITOR_DATA_LINES)
360     {
361 sysadm 1.29 #ifdef _DEBUG
362     log_error("display_line_total over limit %d >= %d\n", p_editor_data->display_line_total, MAX_EDITOR_DATA_LINES);
363     #endif
364    
365 sysadm 1.15 // Terminate prior display line with \n, to avoid error on cleanup
366     if (display_line + i - 1 >= 0 && p_editor_data->display_line_lengths[display_line + i - 1] > 0)
367     {
368 sysadm 1.24 len = split_line(p_editor_data->p_display_lines[display_line + i - 1], SCREEN_COLS - 1, &eol, &display_len, 0);
369 sysadm 1.15 p_editor_data->p_display_lines[display_line + i - 1][len] = '\n';
370     p_editor_data->p_display_lines[display_line + i - 1][len + 1] = '\0';
371     p_editor_data->display_line_lengths[display_line + i - 1] = len + 1;
372 sysadm 1.39 p_editor_data->display_line_widths[display_line + i - 1] = display_len;
373 sysadm 1.15 }
374     if (*p_offset >= p_editor_data->display_line_lengths[*p_display_line])
375     {
376     *p_offset = p_editor_data->display_line_lengths[*p_display_line] - 1;
377     }
378     break;
379 sysadm 1.4 }
380 sysadm 1.32
381     // for (j = p_editor_data->display_line_total; j > last_display_line + 1; j--)
382     // {
383     // p_editor_data->p_display_lines[j] = p_editor_data->p_display_lines[j - 1];
384     // p_editor_data->display_line_lengths[j] = p_editor_data->display_line_lengths[j - 1];
385 sysadm 1.39 // p_editor_data->display_line_widths[j] = p_editor_data->display_line_widths[j - 1];
386 sysadm 1.32 // }
387     memmove(p_editor_data->p_display_lines + last_display_line + 2,
388     p_editor_data->p_display_lines + last_display_line + 1,
389     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
390     sizeof(p_editor_data->p_display_lines[last_display_line + 1]));
391     memmove(p_editor_data->display_line_lengths + last_display_line + 2,
392     p_editor_data->display_line_lengths + last_display_line + 1,
393     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
394     sizeof(p_editor_data->display_line_lengths[last_display_line + 1]));
395 sysadm 1.39 memmove(p_editor_data->display_line_widths + last_display_line + 2,
396     p_editor_data->display_line_widths + last_display_line + 1,
397     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
398     sizeof(p_editor_data->display_line_widths[last_display_line + 1]));
399 sysadm 1.32
400 sysadm 1.4 last_display_line++;
401 sysadm 1.32 *p_last_updated_line = p_editor_data->display_line_total;
402 sysadm 1.4 (p_editor_data->display_line_total)++;
403 sysadm 1.2 }
404    
405 sysadm 1.4 p_editor_data->display_line_lengths[display_line + i] = line_offsets[i + 1] - line_offsets[i];
406 sysadm 1.39 p_editor_data->display_line_widths[display_line + i] = line_widths[i];
407 sysadm 1.4 p_editor_data->p_display_lines[display_line + i] =
408     (i == 0
409     ? p_data_line
410     : (p_editor_data->p_display_lines[display_line + i - 1] + p_editor_data->display_line_lengths[display_line + i - 1]));
411 sysadm 1.2
412 sysadm 1.4 if (p_editor_data->display_line_lengths[display_line + i] > 0 &&
413     p_editor_data->p_display_lines[display_line + i][p_editor_data->display_line_lengths[display_line + i] - 1] == '\n')
414 sysadm 1.3 {
415 sysadm 1.4 break;
416 sysadm 1.3 }
417 sysadm 1.4 }
418 sysadm 1.3
419 sysadm 1.7 *p_last_updated_line = MAX(display_line + MIN(i, split_line_total - 1), *p_last_updated_line);
420 sysadm 1.2
421 sysadm 1.14 if (*p_offset >= p_editor_data->display_line_lengths[*p_display_line])
422 sysadm 1.3 {
423 sysadm 1.18 if (*p_display_line + 1 < p_editor_data->display_line_total)
424 sysadm 1.15 {
425 sysadm 1.18 *p_offset -= p_editor_data->display_line_lengths[*p_display_line];
426 sysadm 1.15 (*p_display_line)++;
427     }
428 sysadm 1.22 }
429    
430     // Prevent the last display line from being over-length
431     if (p_editor_data->display_line_total == MAX_EDITOR_DATA_LINES)
432     {
433 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);
434 sysadm 1.22 p_editor_data->p_display_lines[p_editor_data->display_line_total - 1][len] = '\0';
435     p_editor_data->display_line_lengths[p_editor_data->display_line_total - 1] = len;
436 sysadm 1.39 p_editor_data->display_line_widths[p_editor_data->display_line_total - 1] = display_len;
437 sysadm 1.22 if (*p_display_line + 1 >= p_editor_data->display_line_total)
438 sysadm 1.20 {
439 sysadm 1.22 *p_offset = MIN(*p_offset, len);
440     *p_display_line = p_editor_data->display_line_total - 1;
441 sysadm 1.20 }
442 sysadm 1.3 }
443    
444 sysadm 1.4 return 0;
445 sysadm 1.2 }
446    
447 sysadm 1.23 int editor_data_delete(EDITOR_DATA *p_editor_data, long *p_display_line, long *p_offset,
448 sysadm 1.49 long *p_last_updated_line, int del_line)
449 sysadm 1.2 {
450 sysadm 1.23 long display_line = *p_display_line;
451     long offset = *p_offset;
452 sysadm 1.7 char *p_data_line = NULL;
453     long len_data_line;
454     long offset_data_line;
455     long last_display_line; // of data line
456     long line_offsets[MAX_EDITOR_DATA_LINE_LENGTH + 1];
457 sysadm 1.39 int line_widths[MAX_EDITOR_DATA_LINE_LENGTH + 1];
458 sysadm 1.7 long split_line_total;
459     long i, j;
460     int str_len = 0;
461 sysadm 1.39 char c;
462 sysadm 1.7
463     if (p_editor_data == NULL || p_last_updated_line == NULL)
464     {
465 sysadm 1.46 log_error("NULL pointer error\n");
466 sysadm 1.7 return -1;
467     }
468    
469     // Get length of current data line
470     len_data_line = 0;
471     p_data_line = p_editor_data->p_display_lines[display_line];
472     for (i = display_line - 1; i >= 0; i--)
473     {
474     if (p_editor_data->display_line_lengths[i] > 0 &&
475     p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of prior data line
476     {
477     break;
478     }
479    
480     len_data_line += p_editor_data->display_line_lengths[i];
481     p_data_line = p_editor_data->p_display_lines[i];
482     }
483     offset_data_line = len_data_line + offset;
484     last_display_line = p_editor_data->display_line_total - 1;
485     for (i = display_line; i < p_editor_data->display_line_total; i++)
486     {
487     len_data_line += p_editor_data->display_line_lengths[i];
488    
489     if (p_editor_data->display_line_lengths[i] > 0 &&
490     p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of current data line
491     {
492     last_display_line = i;
493     break;
494     }
495     }
496    
497 sysadm 1.18 if (offset_data_line >= len_data_line) // end-of-line
498     {
499     return 0;
500     }
501    
502 sysadm 1.7 // Check str to be deleted
503 sysadm 1.49 if (del_line)
504     {
505     str_len = (int)(p_editor_data->display_line_lengths[display_line] - offset);
506     }
507     else if (p_data_line[offset_data_line] > 0 && p_data_line[offset_data_line] < 127)
508 sysadm 1.7 {
509     str_len = 1;
510     }
511 sysadm 1.48 else if (p_data_line[offset_data_line] & 0x80) // head of multi-byte character
512 sysadm 1.7 {
513 sysadm 1.39 str_len = 1;
514 sysadm 1.48 c = (p_data_line[offset_data_line] & 0x70) << 1;
515     while (c & 0x80)
516 sysadm 1.39 {
517     str_len++;
518 sysadm 1.48 c = (c & 0x7f) << 1;
519 sysadm 1.39 }
520 sysadm 1.7 }
521     else
522     {
523 sysadm 1.18 log_error("Some strange character at display_line %ld, offset %ld: %d %d\n",
524     display_line, offset, p_data_line[offset_data_line], p_data_line[offset_data_line + 1]);
525 sysadm 1.10 str_len = 1;
526 sysadm 1.7 }
527    
528     // Current display line is (almost) empty
529     if (offset_data_line + str_len > len_data_line ||
530 sysadm 1.49 (offset_data_line + str_len == len_data_line &&
531     p_data_line[del_line ? len_data_line - 1 : offset_data_line] == '\n'))
532 sysadm 1.7 {
533 sysadm 1.9 if (display_line + 1 >= p_editor_data->display_line_total) // No additional display line (data line)
534     {
535     return 0;
536     }
537    
538     len_data_line = 0; // Next data line
539     last_display_line = p_editor_data->display_line_total - 1;
540     for (i = display_line + 1; i < p_editor_data->display_line_total; i++)
541     {
542     len_data_line += p_editor_data->display_line_lengths[i];
543    
544     if (p_editor_data->display_line_lengths[i] > 0 &&
545     p_editor_data->p_display_lines[i][p_editor_data->display_line_lengths[i] - 1] == '\n') // reach end of current data line
546     {
547     last_display_line = i;
548     break;
549     }
550     }
551    
552     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
553     {
554     return 0;
555     }
556    
557     // Append next data line to current one
558     memcpy(p_data_line + offset_data_line, p_editor_data->p_display_lines[display_line + 1], (size_t)len_data_line);
559     p_data_line[offset_data_line + len_data_line] = '\0';
560    
561     // Recycle next data line
562 sysadm 1.16 memory_pool_free(p_mp_data_line, p_editor_data->p_display_lines[display_line + 1]);
563 sysadm 1.9 }
564     else
565     {
566     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));
567     p_data_line[len_data_line - str_len] = '\0';
568     len_data_line -= str_len;
569 sysadm 1.7 }
570    
571     // Set p_data_line to head of current display line
572     p_data_line = p_editor_data->p_display_lines[display_line];
573     split_line_total = last_display_line - display_line + 2;
574    
575     // Split current data line since beginning of current display line
576 sysadm 1.39 split_line_total = split_data_lines(p_data_line, SCREEN_COLS, line_offsets, split_line_total, 0, line_widths);
577 sysadm 1.7
578     for (i = 0; i < split_line_total; i++)
579     {
580     p_editor_data->display_line_lengths[display_line + i] = line_offsets[i + 1] - line_offsets[i];
581 sysadm 1.39 p_editor_data->display_line_widths[display_line + i] = line_widths[i];
582 sysadm 1.7 p_editor_data->p_display_lines[display_line + i] =
583     (i == 0
584     ? p_data_line
585     : (p_editor_data->p_display_lines[display_line + i - 1] + p_editor_data->display_line_lengths[display_line + i - 1]));
586    
587     if (p_editor_data->display_line_lengths[display_line + i] > 0 &&
588     p_editor_data->p_display_lines[display_line + i][p_editor_data->display_line_lengths[display_line + i] - 1] == '\n')
589     {
590     break;
591     }
592     }
593    
594     *p_last_updated_line = display_line + MIN(i, split_line_total - 1);
595    
596 sysadm 1.18 if (*p_last_updated_line < last_display_line)
597 sysadm 1.7 {
598     // Remove redundant display line after last_display_line
599 sysadm 1.32 // for (j = last_display_line + 1; j < p_editor_data->display_line_total; j++)
600     // {
601     // p_editor_data->p_display_lines[j - (last_display_line - *p_last_updated_line)] = p_editor_data->p_display_lines[j];
602     // p_editor_data->display_line_lengths[j - (last_display_line - *p_last_updated_line)] = p_editor_data->display_line_lengths[j];
603 sysadm 1.39 // p_editor_data->display_line_widths[j - (last_display_line - *p_last_updated_line)] = p_editor_data->display_line_widths[j];
604 sysadm 1.32 // }
605     memmove(p_editor_data->p_display_lines + *p_last_updated_line + 1,
606     p_editor_data->p_display_lines + last_display_line + 1,
607     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
608     sizeof(p_editor_data->p_display_lines[last_display_line + 1]));
609     memmove(p_editor_data->display_line_lengths + *p_last_updated_line + 1,
610     p_editor_data->display_line_lengths + last_display_line + 1,
611     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
612     sizeof(p_editor_data->display_line_lengths[last_display_line + 1]));
613 sysadm 1.39 memmove(p_editor_data->display_line_widths + *p_last_updated_line + 1,
614     p_editor_data->display_line_widths + last_display_line + 1,
615     (size_t)(p_editor_data->display_line_total - last_display_line - 1) *
616     sizeof(p_editor_data->display_line_widths[last_display_line + 1]));
617 sysadm 1.7
618 sysadm 1.18 j = p_editor_data->display_line_total;
619     (p_editor_data->display_line_total) -= (last_display_line - *p_last_updated_line);
620     *p_last_updated_line = MAX(j - 1, *p_last_updated_line);
621 sysadm 1.7 }
622    
623 sysadm 1.23 // Return real offset
624     *p_offset = offset;
625    
626 sysadm 1.9 return str_len;
627 sysadm 1.2 }
628    
629     static int editor_display_key_handler(int *p_key, EDITOR_CTX *p_ctx)
630 sysadm 1.1 {
631     switch (*p_key)
632     {
633     case 0: // Set msg
634     snprintf(p_ctx->msg, sizeof(p_ctx->msg),
635 sysadm 1.39 "| 退出[\033[32mCtrl-W\033[33m] |");
636 sysadm 1.1 break;
637 sysadm 1.24 case KEY_CSI:
638     *p_key = KEY_ESC;
639     break;
640 sysadm 1.1 }
641    
642     return 0;
643     }
644    
645     int editor_display(EDITOR_DATA *p_editor_data)
646     {
647     static int show_help = 1;
648     char buffer[MAX_EDITOR_DATA_LINE_LENGTH];
649 sysadm 1.2 EDITOR_CTX ctx;
650 sysadm 1.1 int ch = 0;
651 sysadm 1.4 char input_str[4];
652 sysadm 1.39 char c;
653 sysadm 1.3 int str_len = 0;
654     int input_ok;
655     const int screen_begin_row = 1;
656 sysadm 1.14 const int screen_row_total = SCREEN_ROWS - screen_begin_row;
657     int output_current_row = screen_begin_row;
658     int output_end_row = SCREEN_ROWS - 1;
659 sysadm 1.1 long int line_current = 0;
660     long int len;
661     int loop;
662     int eol, display_len;
663     long row_pos = 1, col_pos = 1;
664 sysadm 1.3 long display_line_in, offset_in;
665     long display_line_out, offset_out;
666     int scroll_rows;
667 sysadm 1.2 long last_updated_line = 0;
668 sysadm 1.8 int key_insert = 1;
669 sysadm 1.12 int i, j;
670     char *p_str;
671 sysadm 1.49 int del_line;
672 sysadm 1.1
673 sysadm 1.14 clrline(output_current_row, SCREEN_ROWS);
674 sysadm 1.1
675     // update msg_ext with extended key handler
676     if (editor_display_key_handler(&ch, &ctx) != 0)
677     {
678     return ch;
679     }
680    
681 sysadm 1.35 for (loop = 1; !SYS_server_exit && loop;)
682 sysadm 1.1 {
683 sysadm 1.14 if (line_current >= p_editor_data->display_line_total || output_current_row > output_end_row)
684 sysadm 1.1 {
685 sysadm 1.14 ctx.line_cursor = line_current - output_current_row + row_pos + 1;
686 sysadm 1.1
687     snprintf(buffer, sizeof(buffer),
688 sysadm 1.2 "\033[1;44;33m[\033[32m%ld\033[33m;\033[32m%ld\033[33m] "
689 sysadm 1.39 "第\033[32m%ld\033[33m/\033[32m%ld\033[33m行 [\033[32m%s\033[33m] "
690 sysadm 1.2 "%s",
691     row_pos, col_pos,
692     ctx.line_cursor, p_editor_data->display_line_total,
693 sysadm 1.39 key_insert ? "插入" : "替换",
694 sysadm 1.1 ctx.msg);
695    
696 sysadm 1.24 len = split_line(buffer, SCREEN_COLS, &eol, &display_len, 1);
697 sysadm 1.1 for (; display_len < SCREEN_COLS; display_len++)
698     {
699     buffer[len++] = ' ';
700     }
701     buffer[len] = '\0';
702     strncat(buffer, "\033[m", sizeof(buffer) - 1 - strnlen(buffer, sizeof(buffer)));
703    
704     moveto(SCREEN_ROWS, 0);
705     prints("%s", buffer);
706    
707     moveto((int)row_pos, (int)col_pos);
708     iflush();
709    
710 sysadm 1.25 str_len = 0;
711     ch = igetch_t(MAX_DELAY_TIME);
712 sysadm 1.33 while (!SYS_server_exit)
713 sysadm 1.1 {
714 sysadm 1.47 if (ch != KEY_NULL && ch != KEY_TIMEOUT)
715     {
716     BBS_last_access_tm = time(NULL);
717     }
718    
719 sysadm 1.1 // extended key handler
720     if (editor_display_key_handler(&ch, &ctx) != 0)
721     {
722     goto cleanup;
723     }
724    
725 sysadm 1.48 if (ch < 256 && (ch & 0x80)) // head of multi-byte character
726 sysadm 1.3 {
727     str_len = 0;
728 sysadm 1.48 c = (char)(ch & 0xf0);
729     while (c & 0x80)
730 sysadm 1.39 {
731     input_str[str_len] = (char)(ch - 256);
732     str_len++;
733 sysadm 1.48 c = (c & 0x7f) << 1;
734 sysadm 1.39
735 sysadm 1.48 if ((c & 0x80) == 0) // Input completed
736 sysadm 1.39 {
737     break;
738     }
739    
740     // Expect additional bytes of input
741     ch = igetch(100); // 0.1 second
742     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Ignore received bytes if no futher input
743     {
744 sysadm 1.40 #ifdef _DEBUG
745 sysadm 1.39 log_error("Ignore %d bytes of incomplete UTF8 character\n", str_len);
746 sysadm 1.40 #endif
747 sysadm 1.39 str_len = 0;
748     break;
749     }
750     }
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     col_pos += (str_len == 1 ? 1 : 2);
829     }
830     }
831 sysadm 1.11 }
832 sysadm 1.3
833 sysadm 1.25 if (display_line_out != display_line_in) // Output on line change
834     {
835     break;
836     }
837    
838     ch = igetch(0);
839     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Output if no futher input
840     {
841     break;
842     }
843    
844 sysadm 1.21 str_len = 0;
845 sysadm 1.11 continue;
846 sysadm 1.2 }
847 sysadm 1.49 else if (ch == KEY_DEL || ch == BACKSPACE || ch == Ctrl('K') || ch == Ctrl('Y')) // Del
848 sysadm 1.2 {
849 sysadm 1.43 // Refresh current action while user input
850     if (user_online_update(NULL) < 0)
851     {
852     log_error("user_online_update(NULL) error\n");
853     }
854    
855 sysadm 1.49 del_line = 0;
856    
857 sysadm 1.9 if (ch == BACKSPACE)
858     {
859 sysadm 1.18 if (line_current - output_current_row + row_pos <= 0 && col_pos <= 1) // Forbidden
860     {
861 sysadm 1.34 break; // force output prior operation result if any
862 sysadm 1.18 }
863    
864 sysadm 1.39 offset_in = split_line(p_editor_data->p_display_lines[line_current - output_current_row + row_pos],
865     (int)col_pos - 1, &eol, &display_len, 0);
866     if (offset_in >= 1 && p_editor_data->p_display_lines[line_current - output_current_row + row_pos][offset_in - 1] < 0) // UTF8
867     {
868     col_pos = display_len - 1;
869     }
870     else
871 sysadm 1.23 {
872 sysadm 1.39 col_pos = display_len;
873 sysadm 1.23 }
874    
875 sysadm 1.14 if (col_pos < 1 && line_current - output_current_row + row_pos >= 0)
876 sysadm 1.9 {
877     row_pos--;
878 sysadm 1.39 col_pos = MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]);
879 sysadm 1.9 }
880     }
881 sysadm 1.49 else if (ch == Ctrl('K'))
882     {
883     del_line = 1;
884     }
885     else if (ch == Ctrl('Y'))
886     {
887     col_pos = 1;
888     del_line = 1;
889     }
890 sysadm 1.2
891 sysadm 1.23 display_line_in = line_current - output_current_row + row_pos;
892 sysadm 1.39 offset_in = split_line(p_editor_data->p_display_lines[display_line_in], (int)col_pos - 1, &eol, &display_len, 0);
893 sysadm 1.23 display_line_out = display_line_in;
894     offset_out = offset_in;
895    
896     if ((str_len = editor_data_delete(p_editor_data, &display_line_out, &offset_out,
897 sysadm 1.49 &last_updated_line, del_line)) < 0)
898 sysadm 1.2 {
899 sysadm 1.49 log_error("editor_data_delete() error: %d\n", str_len);
900 sysadm 1.2 }
901     else
902     {
903 sysadm 1.39 col_pos = display_len + 1; // Set col_pos to accurate pos
904 sysadm 1.9
905 sysadm 1.14 output_end_row = MIN(SCREEN_ROWS - 1, output_current_row + (int)(last_updated_line - line_current));
906     line_current -= (output_current_row - row_pos);
907     output_current_row = (int)row_pos;
908 sysadm 1.9
909 sysadm 1.14 if (output_current_row < screen_begin_row) // row_pos <= 0
910 sysadm 1.9 {
911 sysadm 1.14 output_current_row = screen_begin_row;
912 sysadm 1.9 row_pos = screen_begin_row;
913 sysadm 1.14 output_end_row = SCREEN_ROWS - 1;
914     }
915    
916     // Exceed end
917     if (line_current + (screen_row_total - output_current_row) >= p_editor_data->display_line_total &&
918     p_editor_data->display_line_total > screen_row_total)
919     {
920     scroll_rows = (int)((line_current - (output_current_row - screen_begin_row)) -
921     (p_editor_data->display_line_total - screen_row_total));
922    
923     line_current = p_editor_data->display_line_total - screen_row_total;
924     row_pos += scroll_rows;
925     output_current_row = screen_begin_row;
926     output_end_row = SCREEN_ROWS - 1;
927 sysadm 1.9 }
928 sysadm 1.18
929     clrline(output_current_row, output_end_row);
930 sysadm 1.2 }
931    
932 sysadm 1.25 if (display_line_out != display_line_in) // Output on line change
933     {
934     break;
935     }
936    
937     ch = igetch(0);
938     if (ch == KEY_NULL || ch == KEY_TIMEOUT) // Output if no futher input
939     {
940     break;
941     }
942    
943 sysadm 1.21 str_len = 0;
944 sysadm 1.2 continue;
945     }
946    
947 sysadm 1.25 input_ok = 1;
948 sysadm 1.1 switch (ch)
949     {
950     case KEY_NULL:
951 sysadm 1.47 log_error("KEY_NULL\n");
952     goto cleanup;
953 sysadm 1.1 case KEY_TIMEOUT:
954 sysadm 1.47 log_error("User input timeout\n");
955 sysadm 1.1 goto cleanup;
956 sysadm 1.17 case Ctrl('W'):
957 sysadm 1.41 case Ctrl('X'):
958 sysadm 1.1 loop = 0;
959     break;
960 sysadm 1.13 case Ctrl('S'): // Start of line
961 sysadm 1.2 case KEY_CTRL_LEFT:
962 sysadm 1.1 col_pos = 1;
963     break;
964 sysadm 1.13 case Ctrl('E'): // End of line
965 sysadm 1.2 case KEY_CTRL_RIGHT:
966 sysadm 1.23 if (line_current - output_current_row + row_pos == p_editor_data->display_line_total - 1) // row_pos at end line
967 sysadm 1.22 {
968     // last display line does NOT have \n in the end
969 sysadm 1.39 col_pos = p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1;
970 sysadm 1.22 break;
971     }
972 sysadm 1.39 col_pos = MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]);
973 sysadm 1.1 break;
974 sysadm 1.13 case Ctrl('T'): // Top of screen
975 sysadm 1.2 case KEY_CTRL_UP:
976 sysadm 1.3 row_pos = screen_begin_row;
977 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
978 sysadm 1.2 break;
979 sysadm 1.13 case Ctrl('B'): // Bottom of screen
980 sysadm 1.2 case KEY_CTRL_DOWN:
981 sysadm 1.18 if (p_editor_data->display_line_total < screen_row_total)
982     {
983     row_pos = p_editor_data->display_line_total;
984     }
985     else
986     {
987     row_pos = SCREEN_ROWS - 1;
988     }
989     if (line_current + (screen_row_total - (output_current_row - screen_begin_row)) >= p_editor_data->display_line_total) // Reach end
990     {
991     // last display line does NOT have \n in the end
992 sysadm 1.39 col_pos = MIN(col_pos, p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1);
993 sysadm 1.18 }
994     else
995     {
996 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
997 sysadm 1.18 }
998 sysadm 1.2 break;
999     case KEY_INS:
1000 sysadm 1.8 key_insert = !key_insert;
1001 sysadm 1.2 break;
1002 sysadm 1.1 case KEY_HOME:
1003     row_pos = 1;
1004     col_pos = 1;
1005 sysadm 1.14 if (line_current - output_current_row < 0) // Reach begin
1006 sysadm 1.1 {
1007     break;
1008     }
1009     line_current = 0;
1010 sysadm 1.14 output_current_row = screen_begin_row;
1011     output_end_row = SCREEN_ROWS - 1;
1012     clrline(output_current_row, SCREEN_ROWS);
1013 sysadm 1.1 break;
1014     case KEY_END:
1015 sysadm 1.3 if (p_editor_data->display_line_total < screen_row_total)
1016 sysadm 1.1 {
1017     row_pos = p_editor_data->display_line_total;
1018 sysadm 1.39 col_pos = p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1;
1019 sysadm 1.1 break;
1020     }
1021 sysadm 1.3 line_current = p_editor_data->display_line_total - screen_row_total;
1022 sysadm 1.14 output_current_row = screen_begin_row;
1023     output_end_row = SCREEN_ROWS - 1;
1024     row_pos = SCREEN_ROWS - 1;
1025 sysadm 1.39 col_pos = p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1;
1026 sysadm 1.14 clrline(output_current_row, SCREEN_ROWS);
1027 sysadm 1.1 break;
1028     case KEY_LEFT:
1029 sysadm 1.39 offset_in = split_line(p_editor_data->p_display_lines[line_current - output_current_row + row_pos],
1030     (int)col_pos - 1, &eol, &display_len, 0);
1031     if (offset_in >= 1 && p_editor_data->p_display_lines[line_current - output_current_row + row_pos][offset_in - 1] < 0) // UTF8
1032     {
1033     col_pos = display_len - 1;
1034     }
1035     else
1036     {
1037     col_pos = display_len;
1038     }
1039     if (col_pos >= 1)
1040 sysadm 1.1 {
1041     break;
1042     }
1043     col_pos = SCREEN_COLS; // continue to KEY_UP
1044     case KEY_UP:
1045 sysadm 1.3 if (row_pos > screen_begin_row)
1046 sysadm 1.1 {
1047     row_pos--;
1048 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1049 sysadm 1.1 break;
1050     }
1051 sysadm 1.14 if (line_current - output_current_row < 0) // Reach begin
1052 sysadm 1.1 {
1053 sysadm 1.2 col_pos = 1;
1054 sysadm 1.1 break;
1055     }
1056 sysadm 1.14 line_current -= output_current_row;
1057     output_current_row = screen_begin_row;
1058 sysadm 1.1 // screen_end_line = begin_line;
1059     // prints("\033[T"); // Scroll down 1 line
1060 sysadm 1.14 output_end_row = SCREEN_ROWS - 1; // Legacy Fterm only works with this line
1061 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1062 sysadm 1.1 break;
1063     case KEY_SPACE:
1064     break;
1065     case KEY_RIGHT:
1066 sysadm 1.39 offset_in = split_line(p_editor_data->p_display_lines[line_current - output_current_row + row_pos],
1067     (int)col_pos - 1, &eol, &display_len, 0);
1068     if (offset_in < p_editor_data->display_line_lengths[line_current - output_current_row + row_pos] &&
1069     p_editor_data->p_display_lines[line_current - output_current_row + row_pos][offset_in] < 0) // UTF8
1070     {
1071     col_pos = display_len + 3;
1072     }
1073     else
1074     {
1075     col_pos = display_len + 2;
1076     }
1077     if (col_pos <= p_editor_data->display_line_widths[line_current - output_current_row + row_pos])
1078 sysadm 1.1 {
1079     break;
1080     }
1081     col_pos = 1; // continue to KEY_DOWN
1082     case KEY_DOWN:
1083 sysadm 1.3 if (row_pos < MIN(screen_row_total, p_editor_data->display_line_total))
1084 sysadm 1.1 {
1085     row_pos++;
1086 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1087 sysadm 1.1 break;
1088     }
1089 sysadm 1.23 if (line_current - output_current_row + row_pos == p_editor_data->display_line_total - 1) // row_pos at end line
1090 sysadm 1.1 {
1091 sysadm 1.18 // last display line does NOT have \n in the end
1092 sysadm 1.39 col_pos = p_editor_data->display_line_widths[line_current - output_current_row + row_pos] + 1;
1093 sysadm 1.1 break;
1094     }
1095 sysadm 1.14 line_current += (screen_row_total - (output_current_row - screen_begin_row));
1096     output_current_row = screen_row_total;
1097     output_end_row = SCREEN_ROWS - 1;
1098 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1099 sysadm 1.1 moveto(SCREEN_ROWS, 0);
1100     clrtoeol();
1101 sysadm 1.36 // prints("\033[S"); // Scroll up 1 line
1102     prints("\n"); // Legacy Cterm only works with this line
1103 sysadm 1.1 break;
1104     case KEY_PGUP:
1105 sysadm 1.14 if (line_current - output_current_row < 0) // Reach begin
1106 sysadm 1.1 {
1107     break;
1108     }
1109 sysadm 1.14 line_current -= ((screen_row_total - 1) + (output_current_row - screen_begin_row));
1110 sysadm 1.1 if (line_current < 0)
1111     {
1112     line_current = 0;
1113     }
1114 sysadm 1.14 output_current_row = screen_begin_row;
1115     output_end_row = SCREEN_ROWS - 1;
1116 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1117 sysadm 1.14 clrline(output_current_row, SCREEN_ROWS);
1118 sysadm 1.1 break;
1119     case KEY_PGDN:
1120 sysadm 1.14 if (line_current + screen_row_total - (output_current_row - screen_begin_row) >= p_editor_data->display_line_total) // Reach end
1121 sysadm 1.1 {
1122     break;
1123     }
1124 sysadm 1.14 line_current += (screen_row_total - 1) - (output_current_row - screen_begin_row);
1125 sysadm 1.3 if (line_current + screen_row_total > p_editor_data->display_line_total) // No enough lines to display
1126 sysadm 1.1 {
1127 sysadm 1.3 line_current = p_editor_data->display_line_total - screen_row_total;
1128 sysadm 1.1 }
1129 sysadm 1.14 output_current_row = screen_begin_row;
1130     output_end_row = SCREEN_ROWS - 1;
1131 sysadm 1.39 col_pos = MIN(col_pos, MAX(1, p_editor_data->display_line_widths[line_current - output_current_row + row_pos]));
1132 sysadm 1.14 clrline(output_current_row, SCREEN_ROWS);
1133 sysadm 1.1 break;
1134 sysadm 1.44 case Ctrl('Q'):
1135 sysadm 1.1 case KEY_F1:
1136     if (!show_help) // Not reentrant
1137     {
1138     break;
1139     }
1140     // Display help information
1141     show_help = 0;
1142     display_file(DATA_READ_HELP, 1);
1143     show_help = 1;
1144     case KEY_F5:
1145     // Refresh after display help information
1146 sysadm 1.14 line_current -= (output_current_row - screen_begin_row);
1147     output_current_row = screen_begin_row;
1148     output_end_row = SCREEN_ROWS - 1;
1149     clrline(output_current_row, SCREEN_ROWS);
1150 sysadm 1.1 break;
1151     case 0: // Refresh bottom line
1152     break;
1153     default:
1154     input_ok = 0;
1155     break;
1156     }
1157    
1158 sysadm 1.43 // Refresh current action while user input
1159     if (user_online_update(NULL) < 0)
1160     {
1161     log_error("user_online_update(NULL) error\n");
1162     }
1163    
1164 sysadm 1.14 if (input_ok)
1165 sysadm 1.11 {
1166 sysadm 1.14 break;
1167 sysadm 1.11 }
1168 sysadm 1.25
1169     ch = igetch_t(MAX_DELAY_TIME);
1170 sysadm 1.1 }
1171    
1172     continue;
1173     }
1174    
1175     len = p_editor_data->display_line_lengths[line_current];
1176     if (len >= sizeof(buffer))
1177     {
1178     log_error("Buffer overflow: len=%ld line=%ld \n", len, line_current);
1179     len = sizeof(buffer) - 1;
1180     }
1181     else if (len < 0)
1182     {
1183     log_error("Incorrect line offsets: len=%ld line=%ld \n", len, line_current);
1184     len = 0;
1185     }
1186    
1187 sysadm 1.12 // memcpy(buffer, p_editor_data->p_display_lines[line_current], (size_t)len);
1188     // Replace '\033' with '*'
1189     p_str = p_editor_data->p_display_lines[line_current];
1190     for (i = 0, j = 0; i < len; i++)
1191     {
1192     if (p_str[i] == '\033')
1193     {
1194     memcpy(buffer + j, EDITOR_ESC_DISPLAY_STR, sizeof(EDITOR_ESC_DISPLAY_STR) - 1);
1195     j += (int)(sizeof(EDITOR_ESC_DISPLAY_STR) - 1);
1196     }
1197     else
1198     {
1199     buffer[j] = p_str[i];
1200     j++;
1201     }
1202     }
1203     buffer[j] = '\0';
1204 sysadm 1.1
1205 sysadm 1.14 moveto(output_current_row, 0);
1206 sysadm 1.1 clrtoeol();
1207     prints("%s", buffer);
1208     line_current++;
1209 sysadm 1.14 output_current_row++;
1210 sysadm 1.1 }
1211    
1212     cleanup:
1213     return ch;
1214     }
webmaster@leafok.com
 ViewVC Help
Powered by ViewVC 1.3.0-beta1