| 1/* $FreeBSD: head/contrib/libreadline/display.c 58314 2000-03-19 22:00:57Z ache $ */
|
1/* display.c -- readline redisplay facility. */
2
3/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
4
5 This file is part of the GNU Readline Library, a library for
6 reading lines of text with interactive input and history editing.
7
8 The GNU Readline Library is free software; you can redistribute it
9 and/or modify it under the terms of the GNU General Public License
| 2/* display.c -- readline redisplay facility. */
3
4/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
5
6 This file is part of the GNU Readline Library, a library for
7 reading lines of text with interactive input and history editing.
8
9 The GNU Readline Library is free software; you can redistribute it
10 and/or modify it under the terms of the GNU General Public License
|
10 as published by the Free Software Foundation; either version 1, or
| 11 as published by the Free Software Foundation; either version 2, or
|
11 (at your option) any later version.
12
13 The GNU Readline Library is distributed in the hope that it will be
14 useful, but WITHOUT ANY WARRANTY; without even the implied warranty
15 of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 The GNU General Public License is often shipped with GNU software, and
19 is generally kept in a file called COPYING or LICENSE. If you do not
20 have a copy of the license, write to the Free Software Foundation,
| 12 (at your option) any later version.
13
14 The GNU Readline Library is distributed in the hope that it will be
15 useful, but WITHOUT ANY WARRANTY; without even the implied warranty
16 of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
18
19 The GNU General Public License is often shipped with GNU software, and
20 is generally kept in a file called COPYING or LICENSE. If you do not
21 have a copy of the license, write to the Free Software Foundation,
|
21 675 Mass Ave, Cambridge, MA 02139, USA. */
| 22 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
|
22#define READLINE_LIBRARY
23
24#if defined (HAVE_CONFIG_H)
25# include <config.h>
26#endif
27
28#include <sys/types.h>
29
30#if defined (HAVE_UNISTD_H)
31# include <unistd.h>
32#endif /* HAVE_UNISTD_H */
33
34#include "posixstat.h"
35
36#if defined (HAVE_STDLIB_H)
37# include <stdlib.h>
38#else
39# include "ansi_stdlib.h"
40#endif /* HAVE_STDLIB_H */
41
42#include <stdio.h>
43
| 23#define READLINE_LIBRARY
24
25#if defined (HAVE_CONFIG_H)
26# include <config.h>
27#endif
28
29#include <sys/types.h>
30
31#if defined (HAVE_UNISTD_H)
32# include <unistd.h>
33#endif /* HAVE_UNISTD_H */
34
35#include "posixstat.h"
36
37#if defined (HAVE_STDLIB_H)
38# include <stdlib.h>
39#else
40# include "ansi_stdlib.h"
41#endif /* HAVE_STDLIB_H */
42
43#include <stdio.h>
44
|
44#if defined (__GO32__)
45# include <go32.h>
46# include <pc.h>
47#endif /* __GO32__ */
48
| |
49/* System-specific feature definitions and include files. */
50#include "rldefs.h"
51
52/* Termcap library stuff. */
53#include "tcap.h"
54
55/* Some standard library routines. */
56#include "readline.h"
57#include "history.h"
58
| 45/* System-specific feature definitions and include files. */
46#include "rldefs.h"
47
48/* Termcap library stuff. */
49#include "tcap.h"
50
51/* Some standard library routines. */
52#include "readline.h"
53#include "history.h"
54
|
| 55#include "rlprivate.h"
56#include "xmalloc.h"
57
|
59#if !defined (strchr) && !defined (__STDC__)
60extern char *strchr (), *strrchr ();
61#endif /* !strchr && !__STDC__ */
62
| 58#if !defined (strchr) && !defined (__STDC__)
59extern char *strchr (), *strrchr ();
60#endif /* !strchr && !__STDC__ */
61
|
63/* Global and pseudo-global variables and functions
64 imported from readline.c. */
65extern char *rl_prompt;
66extern int readline_echoing_p;
67
68extern int _rl_output_meta_chars;
69extern int _rl_horizontal_scroll_mode;
70extern int _rl_mark_modified_lines;
71extern int _rl_prefer_visible_bell;
72
73/* Variables and functions imported from terminal.c */
74extern void _rl_output_some_chars ();
75#ifdef _MINIX
76extern void _rl_output_character_function ();
77#else
78extern int _rl_output_character_function ();
| 62#if defined (HACK_TERMCAP_MOTION)
63extern char *term_forward_char;
|
79#endif
| 64#endif
|
80extern int _rl_backspace ();
| |
81
| 65
|
82extern char *term_clreol, *term_clrpag;
83extern char *term_im, *term_ic, *term_ei, *term_DC;
84extern char *term_up, *term_dc, *term_cr, *term_IC;
85extern int screenheight, screenwidth, screenchars;
86extern int terminal_can_insert, _rl_term_autowrap;
| 66static void update_line __P((char *, char *, int, int, int, int));
67static void space_to_eol __P((int));
68static void delete_chars __P((int));
69static void insert_some_chars __P((char *, int));
70static void cr __P((void));
|
87
| 71
|
88/* Pseudo-global functions (local to the readline library) exported
89 by this file. */
90void _rl_move_cursor_relative (), _rl_output_some_chars ();
91void _rl_move_vert ();
92void _rl_clear_to_eol (), _rl_clear_screen ();
93
94static void update_line (), space_to_eol ();
95static void delete_chars (), insert_some_chars ();
96static void cr ();
97
| |
98static int *inv_lbreaks, *vis_lbreaks;
| 72static int *inv_lbreaks, *vis_lbreaks;
|
| 73static int inv_lbsize, vis_lbsize;
|
99
| 74
|
100extern char *xmalloc (), *xrealloc ();
101
| |
102/* Heuristic used to decide whether it is faster to move from CUR to NEW
103 by backing up or outputting a carriage return and moving forward. */
104#define CR_FASTER(new, cur) (((new) + 1) < ((cur) - (new)))
105
106/* **************************************************************** */
107/* */
108/* Display stuff */
109/* */
110/* **************************************************************** */
111
112/* This is the stuff that is hard for me. I never seem to write good
113 display routines in C. Let's see how I do this time. */
114
115/* (PWP) Well... Good for a simple line updater, but totally ignores
116 the problems of input lines longer than the screen width.
117
118 update_line and the code that calls it makes a multiple line,
119 automatically wrapping line update. Careful attention needs
120 to be paid to the vertical position variables. */
121
122/* Keep two buffers; one which reflects the current contents of the
123 screen, and the other to draw what we think the new contents should
124 be. Then compare the buffers, and make whatever changes to the
125 screen itself that we should. Finally, make the buffer that we
126 just drew into be the one which reflects the current contents of the
127 screen, and place the cursor where it belongs.
128
129 Commands that want to can fix the display themselves, and then let
130 this function know that the display has been fixed by setting the
131 RL_DISPLAY_FIXED variable. This is good for efficiency. */
132
133/* Application-specific redisplay function. */
134VFunction *rl_redisplay_function = rl_redisplay;
135
136/* Global variables declared here. */
137/* What YOU turn on when you have handled all redisplay yourself. */
138int rl_display_fixed = 0;
139
140int _rl_suppress_redisplay = 0;
141
142/* The stuff that gets printed out before the actual text of the line.
143 This is usually pointing to rl_prompt. */
144char *rl_display_prompt = (char *)NULL;
145
146/* Pseudo-global variables declared here. */
147/* The visible cursor position. If you print some text, adjust this. */
148int _rl_last_c_pos = 0;
149int _rl_last_v_pos = 0;
150
151/* Number of lines currently on screen minus 1. */
152int _rl_vis_botlin = 0;
153
154/* Variables used only in this file. */
155/* The last left edge of text that was displayed. This is used when
156 doing horizontal scrolling. It shifts in thirds of a screenwidth. */
157static int last_lmargin;
158
159/* The line display buffers. One is the line currently displayed on
160 the screen. The other is the line about to be displayed. */
161static char *visible_line = (char *)NULL;
162static char *invisible_line = (char *)NULL;
163
164/* A buffer for `modeline' messages. */
165static char msg_buf[128];
166
167/* Non-zero forces the redisplay even if we thought it was unnecessary. */
168static int forced_display;
169
170/* Default and initial buffer size. Can grow. */
171static int line_size = 1024;
172
173static char *local_prompt, *local_prompt_prefix;
174static int visible_length, prefix_length;
175
176/* The number of invisible characters in the line currently being
177 displayed on the screen. */
178static int visible_wrap_offset;
179
180/* static so it can be shared between rl_redisplay and update_line */
181static int wrap_offset;
182
183/* The index of the last invisible_character in the prompt string. */
184static int last_invisible;
185
186/* The length (buffer offset) of the first line of the last (possibly
187 multi-line) buffer displayed on the screen. */
188static int visible_first_line_len;
189
190/* Expand the prompt string S and return the number of visible
191 characters in *LP, if LP is not null. This is currently more-or-less
192 a placeholder for expansion. LIP, if non-null is a place to store the
| 75/* Heuristic used to decide whether it is faster to move from CUR to NEW
76 by backing up or outputting a carriage return and moving forward. */
77#define CR_FASTER(new, cur) (((new) + 1) < ((cur) - (new)))
78
79/* **************************************************************** */
80/* */
81/* Display stuff */
82/* */
83/* **************************************************************** */
84
85/* This is the stuff that is hard for me. I never seem to write good
86 display routines in C. Let's see how I do this time. */
87
88/* (PWP) Well... Good for a simple line updater, but totally ignores
89 the problems of input lines longer than the screen width.
90
91 update_line and the code that calls it makes a multiple line,
92 automatically wrapping line update. Careful attention needs
93 to be paid to the vertical position variables. */
94
95/* Keep two buffers; one which reflects the current contents of the
96 screen, and the other to draw what we think the new contents should
97 be. Then compare the buffers, and make whatever changes to the
98 screen itself that we should. Finally, make the buffer that we
99 just drew into be the one which reflects the current contents of the
100 screen, and place the cursor where it belongs.
101
102 Commands that want to can fix the display themselves, and then let
103 this function know that the display has been fixed by setting the
104 RL_DISPLAY_FIXED variable. This is good for efficiency. */
105
106/* Application-specific redisplay function. */
107VFunction *rl_redisplay_function = rl_redisplay;
108
109/* Global variables declared here. */
110/* What YOU turn on when you have handled all redisplay yourself. */
111int rl_display_fixed = 0;
112
113int _rl_suppress_redisplay = 0;
114
115/* The stuff that gets printed out before the actual text of the line.
116 This is usually pointing to rl_prompt. */
117char *rl_display_prompt = (char *)NULL;
118
119/* Pseudo-global variables declared here. */
120/* The visible cursor position. If you print some text, adjust this. */
121int _rl_last_c_pos = 0;
122int _rl_last_v_pos = 0;
123
124/* Number of lines currently on screen minus 1. */
125int _rl_vis_botlin = 0;
126
127/* Variables used only in this file. */
128/* The last left edge of text that was displayed. This is used when
129 doing horizontal scrolling. It shifts in thirds of a screenwidth. */
130static int last_lmargin;
131
132/* The line display buffers. One is the line currently displayed on
133 the screen. The other is the line about to be displayed. */
134static char *visible_line = (char *)NULL;
135static char *invisible_line = (char *)NULL;
136
137/* A buffer for `modeline' messages. */
138static char msg_buf[128];
139
140/* Non-zero forces the redisplay even if we thought it was unnecessary. */
141static int forced_display;
142
143/* Default and initial buffer size. Can grow. */
144static int line_size = 1024;
145
146static char *local_prompt, *local_prompt_prefix;
147static int visible_length, prefix_length;
148
149/* The number of invisible characters in the line currently being
150 displayed on the screen. */
151static int visible_wrap_offset;
152
153/* static so it can be shared between rl_redisplay and update_line */
154static int wrap_offset;
155
156/* The index of the last invisible_character in the prompt string. */
157static int last_invisible;
158
159/* The length (buffer offset) of the first line of the last (possibly
160 multi-line) buffer displayed on the screen. */
161static int visible_first_line_len;
162
163/* Expand the prompt string S and return the number of visible
164 characters in *LP, if LP is not null. This is currently more-or-less
165 a placeholder for expansion. LIP, if non-null is a place to store the
|
193 index of the last invisible character in ther eturned string. */
| 166 index of the last invisible character in the returned string. */
|
194
195/* Current implementation:
196 \001 (^A) start non-visible characters
197 \002 (^B) end non-visible characters
198 all characters except \001 and \002 (following a \001) are copied to
199 the returned string; all characters except those between \001 and
200 \002 are assumed to be `visible'. */
201
202static char *
203expand_prompt (pmt, lp, lip)
204 char *pmt;
205 int *lp, *lip;
206{
207 char *r, *ret, *p;
208 int l, rl, last, ignoring;
209
210 /* Short-circuit if we can. */
211 if (strchr (pmt, RL_PROMPT_START_IGNORE) == 0)
212 {
213 r = savestring (pmt);
214 if (lp)
215 *lp = strlen (r);
216 return r;
217 }
218
219 l = strlen (pmt);
220 r = ret = xmalloc (l + 1);
221
222 for (rl = ignoring = last = 0, p = pmt; p && *p; p++)
223 {
224 /* This code strips the invisible character string markers
225 RL_PROMPT_START_IGNORE and RL_PROMPT_END_IGNORE */
226 if (*p == RL_PROMPT_START_IGNORE)
227 {
228 ignoring++;
229 continue;
230 }
231 else if (ignoring && *p == RL_PROMPT_END_IGNORE)
232 {
233 ignoring = 0;
234 last = r - ret - 1;
235 continue;
236 }
237 else
238 {
239 *r++ = *p;
240 if (!ignoring)
241 rl++;
242 }
243 }
244
245 *r = '\0';
246 if (lp)
247 *lp = rl;
248 if (lip)
249 *lip = last;
250 return ret;
251}
252
| 167
168/* Current implementation:
169 \001 (^A) start non-visible characters
170 \002 (^B) end non-visible characters
171 all characters except \001 and \002 (following a \001) are copied to
172 the returned string; all characters except those between \001 and
173 \002 are assumed to be `visible'. */
174
175static char *
176expand_prompt (pmt, lp, lip)
177 char *pmt;
178 int *lp, *lip;
179{
180 char *r, *ret, *p;
181 int l, rl, last, ignoring;
182
183 /* Short-circuit if we can. */
184 if (strchr (pmt, RL_PROMPT_START_IGNORE) == 0)
185 {
186 r = savestring (pmt);
187 if (lp)
188 *lp = strlen (r);
189 return r;
190 }
191
192 l = strlen (pmt);
193 r = ret = xmalloc (l + 1);
194
195 for (rl = ignoring = last = 0, p = pmt; p && *p; p++)
196 {
197 /* This code strips the invisible character string markers
198 RL_PROMPT_START_IGNORE and RL_PROMPT_END_IGNORE */
199 if (*p == RL_PROMPT_START_IGNORE)
200 {
201 ignoring++;
202 continue;
203 }
204 else if (ignoring && *p == RL_PROMPT_END_IGNORE)
205 {
206 ignoring = 0;
207 last = r - ret - 1;
208 continue;
209 }
210 else
211 {
212 *r++ = *p;
213 if (!ignoring)
214 rl++;
215 }
216 }
217
218 *r = '\0';
219 if (lp)
220 *lp = rl;
221 if (lip)
222 *lip = last;
223 return ret;
224}
225
|
| 226/* Just strip out RL_PROMPT_START_IGNORE and RL_PROMPT_END_IGNORE from
227 PMT and return the rest of PMT. */
228char *
229_rl_strip_prompt (pmt)
230 char *pmt;
231{
232 char *ret;
233
234 ret = expand_prompt (pmt, (int *)NULL, (int *)NULL);
235 return ret;
236}
237
|
253/*
254 * Expand the prompt string into the various display components, if
255 * necessary.
256 *
257 * local_prompt = expanded last line of string in rl_display_prompt
258 * (portion after the final newline)
259 * local_prompt_prefix = portion before last newline of rl_display_prompt,
260 * expanded via expand_prompt
261 * visible_length = number of visible characters in local_prompt
262 * prefix_length = number of visible characters in local_prompt_prefix
263 *
264 * This function is called once per call to readline(). It may also be
265 * called arbitrarily to expand the primary prompt.
266 *
267 * The return value is the number of visible characters on the last line
268 * of the (possibly multi-line) prompt.
269 */
270int
271rl_expand_prompt (prompt)
272 char *prompt;
273{
274 char *p, *t;
275 int c;
276
277 /* Clear out any saved values. */
278 if (local_prompt)
279 free (local_prompt);
280 if (local_prompt_prefix)
281 free (local_prompt_prefix);
282 local_prompt = local_prompt_prefix = (char *)0;
283 last_invisible = visible_length = 0;
284
285 if (prompt == 0 || *prompt == 0)
286 return (0);
287
288 p = strrchr (prompt, '\n');
289 if (!p)
290 {
291 /* The prompt is only one line. */
292 local_prompt = expand_prompt (prompt, &visible_length, &last_invisible);
293 local_prompt_prefix = (char *)0;
294 return (visible_length);
295 }
296 else
297 {
298 /* The prompt spans multiple lines. */
299 t = ++p;
300 local_prompt = expand_prompt (p, &visible_length, &last_invisible);
301 c = *t; *t = '\0';
302 /* The portion of the prompt string up to and including the
303 final newline is now null-terminated. */
304 local_prompt_prefix = expand_prompt (prompt, &prefix_length, (int *)NULL);
305 *t = c;
306 return (prefix_length);
307 }
308}
309
| 238/*
239 * Expand the prompt string into the various display components, if
240 * necessary.
241 *
242 * local_prompt = expanded last line of string in rl_display_prompt
243 * (portion after the final newline)
244 * local_prompt_prefix = portion before last newline of rl_display_prompt,
245 * expanded via expand_prompt
246 * visible_length = number of visible characters in local_prompt
247 * prefix_length = number of visible characters in local_prompt_prefix
248 *
249 * This function is called once per call to readline(). It may also be
250 * called arbitrarily to expand the primary prompt.
251 *
252 * The return value is the number of visible characters on the last line
253 * of the (possibly multi-line) prompt.
254 */
255int
256rl_expand_prompt (prompt)
257 char *prompt;
258{
259 char *p, *t;
260 int c;
261
262 /* Clear out any saved values. */
263 if (local_prompt)
264 free (local_prompt);
265 if (local_prompt_prefix)
266 free (local_prompt_prefix);
267 local_prompt = local_prompt_prefix = (char *)0;
268 last_invisible = visible_length = 0;
269
270 if (prompt == 0 || *prompt == 0)
271 return (0);
272
273 p = strrchr (prompt, '\n');
274 if (!p)
275 {
276 /* The prompt is only one line. */
277 local_prompt = expand_prompt (prompt, &visible_length, &last_invisible);
278 local_prompt_prefix = (char *)0;
279 return (visible_length);
280 }
281 else
282 {
283 /* The prompt spans multiple lines. */
284 t = ++p;
285 local_prompt = expand_prompt (p, &visible_length, &last_invisible);
286 c = *t; *t = '\0';
287 /* The portion of the prompt string up to and including the
288 final newline is now null-terminated. */
289 local_prompt_prefix = expand_prompt (prompt, &prefix_length, (int *)NULL);
290 *t = c;
291 return (prefix_length);
292 }
293}
294
|
| 295/* Initialize the VISIBLE_LINE and INVISIBLE_LINE arrays, and their associated
296 arrays of line break markers. MINSIZE is the minimum size of VISIBLE_LINE
297 and INVISIBLE_LINE; if it is greater than LINE_SIZE, LINE_SIZE is
298 increased. If the lines have already been allocated, this ensures that
299 they can hold at least MINSIZE characters. */
300static void
301init_line_structures (minsize)
302 int minsize;
303{
304 register int n;
305
306 if (invisible_line == 0) /* initialize it */
307 {
308 if (line_size < minsize)
309 line_size = minsize;
310 visible_line = xmalloc (line_size);
311 invisible_line = xmalloc (line_size);
312 }
313 else if (line_size < minsize) /* ensure it can hold MINSIZE chars */
314 {
315 line_size *= 2;
316 if (line_size < minsize)
317 line_size = minsize;
318 visible_line = xrealloc (visible_line, line_size);
319 invisible_line = xrealloc (invisible_line, line_size);
320 }
321
322 for (n = minsize; n < line_size; n++)
323 {
324 visible_line[n] = 0;
325 invisible_line[n] = 1;
326 }
327
328 if (vis_lbreaks == 0)
329 {
330 /* should be enough. */
331 inv_lbsize = vis_lbsize = 256;
332 inv_lbreaks = (int *)xmalloc (inv_lbsize * sizeof (int));
333 vis_lbreaks = (int *)xmalloc (vis_lbsize * sizeof (int));
334 inv_lbreaks[0] = vis_lbreaks[0] = 0;
335 }
336}
337
|
310/* Basic redisplay algorithm. */
311void
312rl_redisplay ()
313{
314 register int in, out, c, linenum, cursor_linenum;
315 register char *line;
316 int c_pos, inv_botlin, lb_botlin, lb_linenum;
317 int newlines, lpos, temp;
318 char *prompt_this_line;
319
320 if (!readline_echoing_p)
321 return;
322
323 if (!rl_display_prompt)
324 rl_display_prompt = "";
325
326 if (invisible_line == 0)
327 {
| 338/* Basic redisplay algorithm. */
339void
340rl_redisplay ()
341{
342 register int in, out, c, linenum, cursor_linenum;
343 register char *line;
344 int c_pos, inv_botlin, lb_botlin, lb_linenum;
345 int newlines, lpos, temp;
346 char *prompt_this_line;
347
348 if (!readline_echoing_p)
349 return;
350
351 if (!rl_display_prompt)
352 rl_display_prompt = "";
353
354 if (invisible_line == 0)
355 {
|
328 visible_line = xmalloc (line_size);
329 invisible_line = xmalloc (line_size);
330 for (in = 0; in < line_size; in++)
331 {
332 visible_line[in] = 0;
333 invisible_line[in] = 1;
334 }
335
336 /* should be enough, but then again, this is just for testing. */
337 inv_lbreaks = (int *)malloc (256 * sizeof (int));
338 vis_lbreaks = (int *)malloc (256 * sizeof (int));
339 inv_lbreaks[0] = vis_lbreaks[0] = 0;
340
| 356 init_line_structures (0);
|
341 rl_on_new_line ();
342 }
343
344 /* Draw the line into the buffer. */
345 c_pos = -1;
346
347 line = invisible_line;
348 out = inv_botlin = 0;
349
350 /* Mark the line as modified or not. We only do this for history
351 lines. */
352 if (_rl_mark_modified_lines && current_history () && rl_undo_list)
353 {
354 line[out++] = '*';
355 line[out] = '\0';
356 }
357
358 /* If someone thought that the redisplay was handled, but the currently
359 visible line has a different modification state than the one about
360 to become visible, then correct the caller's misconception. */
361 if (visible_line[0] != invisible_line[0])
362 rl_display_fixed = 0;
363
364 /* If the prompt to be displayed is the `primary' readline prompt (the
365 one passed to readline()), use the values we have already expanded.
366 If not, use what's already in rl_display_prompt. WRAP_OFFSET is the
367 number of non-visible characters in the prompt string. */
368 if (rl_display_prompt == rl_prompt || local_prompt)
369 {
370 int local_len = local_prompt ? strlen (local_prompt) : 0;
371 if (local_prompt_prefix && forced_display)
372 _rl_output_some_chars (local_prompt_prefix, strlen (local_prompt_prefix));
373
374 if (local_len > 0)
375 {
376 temp = local_len + out + 2;
377 if (temp >= line_size)
378 {
379 line_size = (temp + 1024) - (temp % 1024);
380 visible_line = xrealloc (visible_line, line_size);
381 line = invisible_line = xrealloc (invisible_line, line_size);
382 }
383 strncpy (line + out, local_prompt, local_len);
384 out += local_len;
385 }
386 line[out] = '\0';
387 wrap_offset = local_len - visible_length;
388 }
389 else
390 {
391 int pmtlen;
392 prompt_this_line = strrchr (rl_display_prompt, '\n');
393 if (!prompt_this_line)
394 prompt_this_line = rl_display_prompt;
395 else
396 {
397 prompt_this_line++;
| 357 rl_on_new_line ();
358 }
359
360 /* Draw the line into the buffer. */
361 c_pos = -1;
362
363 line = invisible_line;
364 out = inv_botlin = 0;
365
366 /* Mark the line as modified or not. We only do this for history
367 lines. */
368 if (_rl_mark_modified_lines && current_history () && rl_undo_list)
369 {
370 line[out++] = '*';
371 line[out] = '\0';
372 }
373
374 /* If someone thought that the redisplay was handled, but the currently
375 visible line has a different modification state than the one about
376 to become visible, then correct the caller's misconception. */
377 if (visible_line[0] != invisible_line[0])
378 rl_display_fixed = 0;
379
380 /* If the prompt to be displayed is the `primary' readline prompt (the
381 one passed to readline()), use the values we have already expanded.
382 If not, use what's already in rl_display_prompt. WRAP_OFFSET is the
383 number of non-visible characters in the prompt string. */
384 if (rl_display_prompt == rl_prompt || local_prompt)
385 {
386 int local_len = local_prompt ? strlen (local_prompt) : 0;
387 if (local_prompt_prefix && forced_display)
388 _rl_output_some_chars (local_prompt_prefix, strlen (local_prompt_prefix));
389
390 if (local_len > 0)
391 {
392 temp = local_len + out + 2;
393 if (temp >= line_size)
394 {
395 line_size = (temp + 1024) - (temp % 1024);
396 visible_line = xrealloc (visible_line, line_size);
397 line = invisible_line = xrealloc (invisible_line, line_size);
398 }
399 strncpy (line + out, local_prompt, local_len);
400 out += local_len;
401 }
402 line[out] = '\0';
403 wrap_offset = local_len - visible_length;
404 }
405 else
406 {
407 int pmtlen;
408 prompt_this_line = strrchr (rl_display_prompt, '\n');
409 if (!prompt_this_line)
410 prompt_this_line = rl_display_prompt;
411 else
412 {
413 prompt_this_line++;
|
| 414 pmtlen = prompt_this_line - rl_display_prompt; /* temp var */
|
398 if (forced_display)
399 {
| 415 if (forced_display)
416 {
|
400 _rl_output_some_chars (rl_display_prompt, prompt_this_line - rl_display_prompt);
| 417 _rl_output_some_chars (rl_display_prompt, pmtlen);
|
401 /* Make sure we are at column zero even after a newline,
402 regardless of the state of terminal output processing. */
| 418 /* Make sure we are at column zero even after a newline,
419 regardless of the state of terminal output processing. */
|
403 if (prompt_this_line[-2] != '\r')
| 420 if (pmtlen < 2 || prompt_this_line[-2] != '\r')
|
404 cr ();
405 }
406 }
407
408 pmtlen = strlen (prompt_this_line);
409 temp = pmtlen + out + 2;
410 if (temp >= line_size)
411 {
412 line_size = (temp + 1024) - (temp % 1024);
413 visible_line = xrealloc (visible_line, line_size);
414 line = invisible_line = xrealloc (invisible_line, line_size);
415 }
416 strncpy (line + out, prompt_this_line, pmtlen);
417 out += pmtlen;
418 line[out] = '\0';
419 wrap_offset = 0;
420 }
421
| 421 cr ();
422 }
423 }
424
425 pmtlen = strlen (prompt_this_line);
426 temp = pmtlen + out + 2;
427 if (temp >= line_size)
428 {
429 line_size = (temp + 1024) - (temp % 1024);
430 visible_line = xrealloc (visible_line, line_size);
431 line = invisible_line = xrealloc (invisible_line, line_size);
432 }
433 strncpy (line + out, prompt_this_line, pmtlen);
434 out += pmtlen;
435 line[out] = '\0';
436 wrap_offset = 0;
437 }
438
|
| 439#define CHECK_INV_LBREAKS() \
440 do { \
441 if (newlines >= (inv_lbsize - 2)) \
442 { \
443 inv_lbsize *= 2; \
444 inv_lbreaks = (int *)xrealloc (inv_lbreaks, inv_lbsize * sizeof (int)); \
445 } \
446 } while (0)
447
|
422#define CHECK_LPOS() \
423 do { \
424 lpos++; \
425 if (lpos >= screenwidth) \
426 { \
| 448#define CHECK_LPOS() \
449 do { \
450 lpos++; \
451 if (lpos >= screenwidth) \
452 { \
|
| 453 if (newlines >= (inv_lbsize - 2)) \
454 { \
455 inv_lbsize *= 2; \
456 inv_lbreaks = (int *)xrealloc (inv_lbreaks, inv_lbsize * sizeof (int)); \
457 } \
|
427 inv_lbreaks[++newlines] = out; \
428 lpos = 0; \
429 } \
430 } while (0)
431
432 /* inv_lbreaks[i] is where line i starts in the buffer. */
433 inv_lbreaks[newlines = 0] = 0;
434 lpos = out - wrap_offset;
435
436 /* XXX - what if lpos is already >= screenwidth before we start drawing the
437 contents of the command line? */
438 while (lpos >= screenwidth)
439 {
| 458 inv_lbreaks[++newlines] = out; \
459 lpos = 0; \
460 } \
461 } while (0)
462
463 /* inv_lbreaks[i] is where line i starts in the buffer. */
464 inv_lbreaks[newlines = 0] = 0;
465 lpos = out - wrap_offset;
466
467 /* XXX - what if lpos is already >= screenwidth before we start drawing the
468 contents of the command line? */
469 while (lpos >= screenwidth)
470 {
|
440#if 0
441 temp = ((newlines + 1) * screenwidth) - ((newlines == 0) ? wrap_offset : 0);
442#else
| |
443 /* XXX - possible fix from Darin Johnson <darin@acuson.com> for prompt
444 string with invisible characters that is longer than the screen
| 471 /* XXX - possible fix from Darin Johnson <darin@acuson.com> for prompt
472 string with invisible characters that is longer than the screen
|
445 width. */
| 473 width. XXX - this doesn't work right if invisible characters have
474 to be put on the second screen line -- it adds too much (the number
475 of invisible chars after the screenwidth). */
|
446 temp = ((newlines + 1) * screenwidth) + ((newlines == 0) ? wrap_offset : 0);
| 476 temp = ((newlines + 1) * screenwidth) + ((newlines == 0) ? wrap_offset : 0);
|
447#endif
| 477
|
448 inv_lbreaks[++newlines] = temp;
449 lpos -= screenwidth;
450 }
451
452 lb_linenum = 0;
453 for (in = 0; in < rl_end; in++)
454 {
455 c = (unsigned char)rl_line_buffer[in];
456
457 if (out + 8 >= line_size) /* XXX - 8 for \t */
458 {
459 line_size *= 2;
460 visible_line = xrealloc (visible_line, line_size);
461 invisible_line = xrealloc (invisible_line, line_size);
462 line = invisible_line;
463 }
464
465 if (in == rl_point)
466 {
467 c_pos = out;
468 lb_linenum = newlines;
469 }
470
471 if (META_CHAR (c))
472 {
473 if (_rl_output_meta_chars == 0)
474 {
475 sprintf (line + out, "\\%o", c);
476
477 if (lpos + 4 >= screenwidth)
478 {
479 temp = screenwidth - lpos;
| 478 inv_lbreaks[++newlines] = temp;
479 lpos -= screenwidth;
480 }
481
482 lb_linenum = 0;
483 for (in = 0; in < rl_end; in++)
484 {
485 c = (unsigned char)rl_line_buffer[in];
486
487 if (out + 8 >= line_size) /* XXX - 8 for \t */
488 {
489 line_size *= 2;
490 visible_line = xrealloc (visible_line, line_size);
491 invisible_line = xrealloc (invisible_line, line_size);
492 line = invisible_line;
493 }
494
495 if (in == rl_point)
496 {
497 c_pos = out;
498 lb_linenum = newlines;
499 }
500
501 if (META_CHAR (c))
502 {
503 if (_rl_output_meta_chars == 0)
504 {
505 sprintf (line + out, "\\%o", c);
506
507 if (lpos + 4 >= screenwidth)
508 {
509 temp = screenwidth - lpos;
|
| 510 CHECK_INV_LBREAKS ();
|
480 inv_lbreaks[++newlines] = out + temp;
481 lpos = 4 - temp;
482 }
483 else
484 lpos += 4;
485
486 out += 4;
487 }
488 else
489 {
490 line[out++] = c;
491 CHECK_LPOS();
492 }
493 }
494#if defined (DISPLAY_TABS)
495 else if (c == '\t')
496 {
497 register int temp, newout;
498
499#if 0
500 newout = (out | (int)7) + 1;
501#else
502 newout = out + 8 - lpos % 8;
503#endif
504 temp = newout - out;
505 if (lpos + temp >= screenwidth)
506 {
507 register int temp2;
508 temp2 = screenwidth - lpos;
| 511 inv_lbreaks[++newlines] = out + temp;
512 lpos = 4 - temp;
513 }
514 else
515 lpos += 4;
516
517 out += 4;
518 }
519 else
520 {
521 line[out++] = c;
522 CHECK_LPOS();
523 }
524 }
525#if defined (DISPLAY_TABS)
526 else if (c == '\t')
527 {
528 register int temp, newout;
529
530#if 0
531 newout = (out | (int)7) + 1;
532#else
533 newout = out + 8 - lpos % 8;
534#endif
535 temp = newout - out;
536 if (lpos + temp >= screenwidth)
537 {
538 register int temp2;
539 temp2 = screenwidth - lpos;
|
| 540 CHECK_INV_LBREAKS ();
|
509 inv_lbreaks[++newlines] = out + temp2;
510 lpos = temp - temp2;
511 while (out < newout)
512 line[out++] = ' ';
513 }
514 else
515 {
516 while (out < newout)
517 line[out++] = ' ';
518 lpos += temp;
519 }
520 }
521#endif
522 else if (c == '\n' && _rl_horizontal_scroll_mode == 0 && term_up && *term_up)
523 {
524 line[out++] = '\0'; /* XXX - sentinel */
| 541 inv_lbreaks[++newlines] = out + temp2;
542 lpos = temp - temp2;
543 while (out < newout)
544 line[out++] = ' ';
545 }
546 else
547 {
548 while (out < newout)
549 line[out++] = ' ';
550 lpos += temp;
551 }
552 }
553#endif
554 else if (c == '\n' && _rl_horizontal_scroll_mode == 0 && term_up && *term_up)
555 {
556 line[out++] = '\0'; /* XXX - sentinel */
|
| 557 CHECK_INV_LBREAKS ();
|
525 inv_lbreaks[++newlines] = out;
526 lpos = 0;
527 }
528 else if (CTRL_CHAR (c) || c == RUBOUT)
529 {
530 line[out++] = '^';
531 CHECK_LPOS();
532 line[out++] = CTRL_CHAR (c) ? UNCTRL (c) : '?';
533 CHECK_LPOS();
534 }
535 else
536 {
537 line[out++] = c;
538 CHECK_LPOS();
539 }
540 }
541 line[out] = '\0';
542 if (c_pos < 0)
543 {
544 c_pos = out;
545 lb_linenum = newlines;
546 }
547
548 inv_botlin = lb_botlin = newlines;
| 558 inv_lbreaks[++newlines] = out;
559 lpos = 0;
560 }
561 else if (CTRL_CHAR (c) || c == RUBOUT)
562 {
563 line[out++] = '^';
564 CHECK_LPOS();
565 line[out++] = CTRL_CHAR (c) ? UNCTRL (c) : '?';
566 CHECK_LPOS();
567 }
568 else
569 {
570 line[out++] = c;
571 CHECK_LPOS();
572 }
573 }
574 line[out] = '\0';
575 if (c_pos < 0)
576 {
577 c_pos = out;
578 lb_linenum = newlines;
579 }
580
581 inv_botlin = lb_botlin = newlines;
|
| 582 CHECK_INV_LBREAKS ();
|
549 inv_lbreaks[newlines+1] = out;
550 cursor_linenum = lb_linenum;
551
552 /* C_POS == position in buffer where cursor should be placed. */
553
554 /* PWP: now is when things get a bit hairy. The visible and invisible
555 line buffers are really multiple lines, which would wrap every
556 (screenwidth - 1) characters. Go through each in turn, finding
557 the changed region and updating it. The line order is top to bottom. */
558
559 /* If we can move the cursor up and down, then use multiple lines,
560 otherwise, let long lines display in a single terminal line, and
561 horizontally scroll it. */
562
563 if (_rl_horizontal_scroll_mode == 0 && term_up && *term_up)
564 {
565 int nleft, pos, changed_screen_line;
566
567 if (!rl_display_fixed || forced_display)
568 {
569 forced_display = 0;
570
571 /* If we have more than a screenful of material to display, then
572 only display a screenful. We should display the last screen,
573 not the first. */
574 if (out >= screenchars)
575 out = screenchars - 1;
576
577 /* The first line is at character position 0 in the buffer. The
578 second and subsequent lines start at inv_lbreaks[N], offset by
579 OFFSET (which has already been calculated above). */
580
581#define W_OFFSET(line, offset) ((line) == 0 ? offset : 0)
582#define VIS_LLEN(l) ((l) > _rl_vis_botlin ? 0 : (vis_lbreaks[l+1] - vis_lbreaks[l]))
583#define INV_LLEN(l) (inv_lbreaks[l+1] - inv_lbreaks[l])
584#define VIS_CHARS(line) (visible_line + vis_lbreaks[line])
585#define VIS_LINE(line) ((line) > _rl_vis_botlin) ? "" : VIS_CHARS(line)
586#define INV_LINE(line) (invisible_line + inv_lbreaks[line])
587
588 /* For each line in the buffer, do the updating display. */
589 for (linenum = 0; linenum <= inv_botlin; linenum++)
590 {
591 update_line (VIS_LINE(linenum), INV_LINE(linenum), linenum,
592 VIS_LLEN(linenum), INV_LLEN(linenum), inv_botlin);
593
594 /* If this is the line with the prompt, we might need to
595 compensate for invisible characters in the new line. Do
596 this only if there is not more than one new line (which
597 implies that we completely overwrite the old visible line)
598 and the new line is shorter than the old. Make sure we are
599 at the end of the new line before clearing. */
600 if (linenum == 0 &&
601 inv_botlin == 0 && _rl_last_c_pos == out &&
602 (wrap_offset > visible_wrap_offset) &&
603 (_rl_last_c_pos < visible_first_line_len))
604 {
605 nleft = screenwidth + wrap_offset - _rl_last_c_pos;
606 if (nleft)
607 _rl_clear_to_eol (nleft);
608 }
609
610 /* Since the new first line is now visible, save its length. */
611 if (linenum == 0)
612 visible_first_line_len = (inv_botlin > 0) ? inv_lbreaks[1] : out - wrap_offset;
613 }
614
615 /* We may have deleted some lines. If so, clear the left over
616 blank ones at the bottom out. */
617 if (_rl_vis_botlin > inv_botlin)
618 {
619 char *tt;
620 for (; linenum <= _rl_vis_botlin; linenum++)
621 {
622 tt = VIS_CHARS (linenum);
623 _rl_move_vert (linenum);
624 _rl_move_cursor_relative (0, tt);
625 _rl_clear_to_eol
626 ((linenum == _rl_vis_botlin) ? strlen (tt) : screenwidth);
627 }
628 }
629 _rl_vis_botlin = inv_botlin;
630
631 /* CHANGED_SCREEN_LINE is set to 1 if we have moved to a
632 different screen line during this redisplay. */
633 changed_screen_line = _rl_last_v_pos != cursor_linenum;
634 if (changed_screen_line)
635 {
636 _rl_move_vert (cursor_linenum);
637 /* If we moved up to the line with the prompt using term_up,
638 the physical cursor position on the screen stays the same,
639 but the buffer position needs to be adjusted to account
640 for invisible characters. */
641 if (cursor_linenum == 0 && wrap_offset)
642 _rl_last_c_pos += wrap_offset;
643 }
644
645 /* We have to reprint the prompt if it contains invisible
646 characters, since it's not generally OK to just reprint
647 the characters from the current cursor position. But we
648 only need to reprint it if the cursor is before the last
649 invisible character in the prompt string. */
650 nleft = visible_length + wrap_offset;
651 if (cursor_linenum == 0 && wrap_offset > 0 && _rl_last_c_pos > 0 &&
652 _rl_last_c_pos <= last_invisible && local_prompt)
653 {
| 583 inv_lbreaks[newlines+1] = out;
584 cursor_linenum = lb_linenum;
585
586 /* C_POS == position in buffer where cursor should be placed. */
587
588 /* PWP: now is when things get a bit hairy. The visible and invisible
589 line buffers are really multiple lines, which would wrap every
590 (screenwidth - 1) characters. Go through each in turn, finding
591 the changed region and updating it. The line order is top to bottom. */
592
593 /* If we can move the cursor up and down, then use multiple lines,
594 otherwise, let long lines display in a single terminal line, and
595 horizontally scroll it. */
596
597 if (_rl_horizontal_scroll_mode == 0 && term_up && *term_up)
598 {
599 int nleft, pos, changed_screen_line;
600
601 if (!rl_display_fixed || forced_display)
602 {
603 forced_display = 0;
604
605 /* If we have more than a screenful of material to display, then
606 only display a screenful. We should display the last screen,
607 not the first. */
608 if (out >= screenchars)
609 out = screenchars - 1;
610
611 /* The first line is at character position 0 in the buffer. The
612 second and subsequent lines start at inv_lbreaks[N], offset by
613 OFFSET (which has already been calculated above). */
614
615#define W_OFFSET(line, offset) ((line) == 0 ? offset : 0)
616#define VIS_LLEN(l) ((l) > _rl_vis_botlin ? 0 : (vis_lbreaks[l+1] - vis_lbreaks[l]))
617#define INV_LLEN(l) (inv_lbreaks[l+1] - inv_lbreaks[l])
618#define VIS_CHARS(line) (visible_line + vis_lbreaks[line])
619#define VIS_LINE(line) ((line) > _rl_vis_botlin) ? "" : VIS_CHARS(line)
620#define INV_LINE(line) (invisible_line + inv_lbreaks[line])
621
622 /* For each line in the buffer, do the updating display. */
623 for (linenum = 0; linenum <= inv_botlin; linenum++)
624 {
625 update_line (VIS_LINE(linenum), INV_LINE(linenum), linenum,
626 VIS_LLEN(linenum), INV_LLEN(linenum), inv_botlin);
627
628 /* If this is the line with the prompt, we might need to
629 compensate for invisible characters in the new line. Do
630 this only if there is not more than one new line (which
631 implies that we completely overwrite the old visible line)
632 and the new line is shorter than the old. Make sure we are
633 at the end of the new line before clearing. */
634 if (linenum == 0 &&
635 inv_botlin == 0 && _rl_last_c_pos == out &&
636 (wrap_offset > visible_wrap_offset) &&
637 (_rl_last_c_pos < visible_first_line_len))
638 {
639 nleft = screenwidth + wrap_offset - _rl_last_c_pos;
640 if (nleft)
641 _rl_clear_to_eol (nleft);
642 }
643
644 /* Since the new first line is now visible, save its length. */
645 if (linenum == 0)
646 visible_first_line_len = (inv_botlin > 0) ? inv_lbreaks[1] : out - wrap_offset;
647 }
648
649 /* We may have deleted some lines. If so, clear the left over
650 blank ones at the bottom out. */
651 if (_rl_vis_botlin > inv_botlin)
652 {
653 char *tt;
654 for (; linenum <= _rl_vis_botlin; linenum++)
655 {
656 tt = VIS_CHARS (linenum);
657 _rl_move_vert (linenum);
658 _rl_move_cursor_relative (0, tt);
659 _rl_clear_to_eol
660 ((linenum == _rl_vis_botlin) ? strlen (tt) : screenwidth);
661 }
662 }
663 _rl_vis_botlin = inv_botlin;
664
665 /* CHANGED_SCREEN_LINE is set to 1 if we have moved to a
666 different screen line during this redisplay. */
667 changed_screen_line = _rl_last_v_pos != cursor_linenum;
668 if (changed_screen_line)
669 {
670 _rl_move_vert (cursor_linenum);
671 /* If we moved up to the line with the prompt using term_up,
672 the physical cursor position on the screen stays the same,
673 but the buffer position needs to be adjusted to account
674 for invisible characters. */
675 if (cursor_linenum == 0 && wrap_offset)
676 _rl_last_c_pos += wrap_offset;
677 }
678
679 /* We have to reprint the prompt if it contains invisible
680 characters, since it's not generally OK to just reprint
681 the characters from the current cursor position. But we
682 only need to reprint it if the cursor is before the last
683 invisible character in the prompt string. */
684 nleft = visible_length + wrap_offset;
685 if (cursor_linenum == 0 && wrap_offset > 0 && _rl_last_c_pos > 0 &&
686 _rl_last_c_pos <= last_invisible && local_prompt)
687 {
|
| 688#if defined (__MSDOS__)
689 putc ('\r', rl_outstream);
690#else
|
654 if (term_cr)
655 tputs (term_cr, 1, _rl_output_character_function);
| 691 if (term_cr)
692 tputs (term_cr, 1, _rl_output_character_function);
|
| 693#endif
|
656 _rl_output_some_chars (local_prompt, nleft);
657 _rl_last_c_pos = nleft;
658 }
659
660 /* Where on that line? And where does that line start
661 in the buffer? */
662 pos = inv_lbreaks[cursor_linenum];
663 /* nleft == number of characters in the line buffer between the
664 start of the line and the cursor position. */
665 nleft = c_pos - pos;
666
667 /* Since _rl_backspace() doesn't know about invisible characters in the
668 prompt, and there's no good way to tell it, we compensate for
669 those characters here and call _rl_backspace() directly. */
670 if (wrap_offset && cursor_linenum == 0 && nleft < _rl_last_c_pos)
671 {
672 _rl_backspace (_rl_last_c_pos - nleft);
673 _rl_last_c_pos = nleft;
674 }
675
676 if (nleft != _rl_last_c_pos)
677 _rl_move_cursor_relative (nleft, &invisible_line[pos]);
678 }
679 }
680 else /* Do horizontal scrolling. */
681 {
682#define M_OFFSET(margin, offset) ((margin) == 0 ? offset : 0)
683 int lmargin, ndisp, nleft, phys_c_pos, t;
684
685 /* Always at top line. */
686 _rl_last_v_pos = 0;
687
688 /* Compute where in the buffer the displayed line should start. This
689 will be LMARGIN. */
690
691 /* The number of characters that will be displayed before the cursor. */
692 ndisp = c_pos - wrap_offset;
693 nleft = visible_length + wrap_offset;
694 /* Where the new cursor position will be on the screen. This can be
695 longer than SCREENWIDTH; if it is, lmargin will be adjusted. */
696 phys_c_pos = c_pos - (last_lmargin ? last_lmargin : wrap_offset);
697 t = screenwidth / 3;
698
699 /* If the number of characters had already exceeded the screenwidth,
700 last_lmargin will be > 0. */
701
702 /* If the number of characters to be displayed is more than the screen
703 width, compute the starting offset so that the cursor is about
704 two-thirds of the way across the screen. */
705 if (phys_c_pos > screenwidth - 2)
706 {
707 lmargin = c_pos - (2 * t);
708 if (lmargin < 0)
709 lmargin = 0;
710 /* If the left margin would be in the middle of a prompt with
711 invisible characters, don't display the prompt at all. */
712 if (wrap_offset && lmargin > 0 && lmargin < nleft)
713 lmargin = nleft;
714 }
715 else if (ndisp < screenwidth - 2) /* XXX - was -1 */
716 lmargin = 0;
717 else if (phys_c_pos < 1)
718 {
719 /* If we are moving back towards the beginning of the line and
720 the last margin is no longer correct, compute a new one. */
721 lmargin = ((c_pos - 1) / t) * t; /* XXX */
722 if (wrap_offset && lmargin > 0 && lmargin < nleft)
723 lmargin = nleft;
724 }
725 else
726 lmargin = last_lmargin;
727
728 /* If the first character on the screen isn't the first character
729 in the display line, indicate this with a special character. */
730 if (lmargin > 0)
731 line[lmargin] = '<';
732
733 /* If SCREENWIDTH characters starting at LMARGIN do not encompass
734 the whole line, indicate that with a special character at the
735 right edge of the screen. If LMARGIN is 0, we need to take the
736 wrap offset into account. */
737 t = lmargin + M_OFFSET (lmargin, wrap_offset) + screenwidth;
738 if (t < out)
739 line[t - 1] = '>';
740
741 if (!rl_display_fixed || forced_display || lmargin != last_lmargin)
742 {
743 forced_display = 0;
744 update_line (&visible_line[last_lmargin],
745 &invisible_line[lmargin],
746 0,
747 screenwidth + visible_wrap_offset,
748 screenwidth + (lmargin ? 0 : wrap_offset),
749 0);
750
751 /* If the visible new line is shorter than the old, but the number
752 of invisible characters is greater, and we are at the end of
753 the new line, we need to clear to eol. */
754 t = _rl_last_c_pos - M_OFFSET (lmargin, wrap_offset);
755 if ((M_OFFSET (lmargin, wrap_offset) > visible_wrap_offset) &&
756 (_rl_last_c_pos == out) &&
757 t < visible_first_line_len)
758 {
759 nleft = screenwidth - t;
760 _rl_clear_to_eol (nleft);
761 }
762 visible_first_line_len = out - lmargin - M_OFFSET (lmargin, wrap_offset);
763 if (visible_first_line_len > screenwidth)
764 visible_first_line_len = screenwidth;
765
766 _rl_move_cursor_relative (c_pos - lmargin, &invisible_line[lmargin]);
767 last_lmargin = lmargin;
768 }
769 }
770 fflush (rl_outstream);
771
772 /* Swap visible and non-visible lines. */
773 {
774 char *temp = visible_line;
| 694 _rl_output_some_chars (local_prompt, nleft);
695 _rl_last_c_pos = nleft;
696 }
697
698 /* Where on that line? And where does that line start
699 in the buffer? */
700 pos = inv_lbreaks[cursor_linenum];
701 /* nleft == number of characters in the line buffer between the
702 start of the line and the cursor position. */
703 nleft = c_pos - pos;
704
705 /* Since _rl_backspace() doesn't know about invisible characters in the
706 prompt, and there's no good way to tell it, we compensate for
707 those characters here and call _rl_backspace() directly. */
708 if (wrap_offset && cursor_linenum == 0 && nleft < _rl_last_c_pos)
709 {
710 _rl_backspace (_rl_last_c_pos - nleft);
711 _rl_last_c_pos = nleft;
712 }
713
714 if (nleft != _rl_last_c_pos)
715 _rl_move_cursor_relative (nleft, &invisible_line[pos]);
716 }
717 }
718 else /* Do horizontal scrolling. */
719 {
720#define M_OFFSET(margin, offset) ((margin) == 0 ? offset : 0)
721 int lmargin, ndisp, nleft, phys_c_pos, t;
722
723 /* Always at top line. */
724 _rl_last_v_pos = 0;
725
726 /* Compute where in the buffer the displayed line should start. This
727 will be LMARGIN. */
728
729 /* The number of characters that will be displayed before the cursor. */
730 ndisp = c_pos - wrap_offset;
731 nleft = visible_length + wrap_offset;
732 /* Where the new cursor position will be on the screen. This can be
733 longer than SCREENWIDTH; if it is, lmargin will be adjusted. */
734 phys_c_pos = c_pos - (last_lmargin ? last_lmargin : wrap_offset);
735 t = screenwidth / 3;
736
737 /* If the number of characters had already exceeded the screenwidth,
738 last_lmargin will be > 0. */
739
740 /* If the number of characters to be displayed is more than the screen
741 width, compute the starting offset so that the cursor is about
742 two-thirds of the way across the screen. */
743 if (phys_c_pos > screenwidth - 2)
744 {
745 lmargin = c_pos - (2 * t);
746 if (lmargin < 0)
747 lmargin = 0;
748 /* If the left margin would be in the middle of a prompt with
749 invisible characters, don't display the prompt at all. */
750 if (wrap_offset && lmargin > 0 && lmargin < nleft)
751 lmargin = nleft;
752 }
753 else if (ndisp < screenwidth - 2) /* XXX - was -1 */
754 lmargin = 0;
755 else if (phys_c_pos < 1)
756 {
757 /* If we are moving back towards the beginning of the line and
758 the last margin is no longer correct, compute a new one. */
759 lmargin = ((c_pos - 1) / t) * t; /* XXX */
760 if (wrap_offset && lmargin > 0 && lmargin < nleft)
761 lmargin = nleft;
762 }
763 else
764 lmargin = last_lmargin;
765
766 /* If the first character on the screen isn't the first character
767 in the display line, indicate this with a special character. */
768 if (lmargin > 0)
769 line[lmargin] = '<';
770
771 /* If SCREENWIDTH characters starting at LMARGIN do not encompass
772 the whole line, indicate that with a special character at the
773 right edge of the screen. If LMARGIN is 0, we need to take the
774 wrap offset into account. */
775 t = lmargin + M_OFFSET (lmargin, wrap_offset) + screenwidth;
776 if (t < out)
777 line[t - 1] = '>';
778
779 if (!rl_display_fixed || forced_display || lmargin != last_lmargin)
780 {
781 forced_display = 0;
782 update_line (&visible_line[last_lmargin],
783 &invisible_line[lmargin],
784 0,
785 screenwidth + visible_wrap_offset,
786 screenwidth + (lmargin ? 0 : wrap_offset),
787 0);
788
789 /* If the visible new line is shorter than the old, but the number
790 of invisible characters is greater, and we are at the end of
791 the new line, we need to clear to eol. */
792 t = _rl_last_c_pos - M_OFFSET (lmargin, wrap_offset);
793 if ((M_OFFSET (lmargin, wrap_offset) > visible_wrap_offset) &&
794 (_rl_last_c_pos == out) &&
795 t < visible_first_line_len)
796 {
797 nleft = screenwidth - t;
798 _rl_clear_to_eol (nleft);
799 }
800 visible_first_line_len = out - lmargin - M_OFFSET (lmargin, wrap_offset);
801 if (visible_first_line_len > screenwidth)
802 visible_first_line_len = screenwidth;
803
804 _rl_move_cursor_relative (c_pos - lmargin, &invisible_line[lmargin]);
805 last_lmargin = lmargin;
806 }
807 }
808 fflush (rl_outstream);
809
810 /* Swap visible and non-visible lines. */
811 {
812 char *temp = visible_line;
|
775 int *itemp = vis_lbreaks;
| 813 int *itemp = vis_lbreaks, ntemp = vis_lbsize;
814
|
776 visible_line = invisible_line;
777 invisible_line = temp;
| 815 visible_line = invisible_line;
816 invisible_line = temp;
|
| 817
|
778 vis_lbreaks = inv_lbreaks;
779 inv_lbreaks = itemp;
| 818 vis_lbreaks = inv_lbreaks;
819 inv_lbreaks = itemp;
|
| 820
821 vis_lbsize = inv_lbsize;
822 inv_lbsize = ntemp;
823
|
780 rl_display_fixed = 0;
781 /* If we are displaying on a single line, and last_lmargin is > 0, we
782 are not displaying any invisible characters, so set visible_wrap_offset
783 to 0. */
784 if (_rl_horizontal_scroll_mode && last_lmargin)
785 visible_wrap_offset = 0;
786 else
787 visible_wrap_offset = wrap_offset;
788 }
789}
790
791/* PWP: update_line() is based on finding the middle difference of each
792 line on the screen; vis:
793
794 /old first difference
795 /beginning of line | /old last same /old EOL
796 v v v v
797old: eddie> Oh, my little gruntle-buggy is to me, as lurgid as
798new: eddie> Oh, my little buggy says to me, as lurgid as
799 ^ ^ ^ ^
800 \beginning of line | \new last same \new end of line
801 \new first difference
802
803 All are character pointers for the sake of speed. Special cases for
804 no differences, as well as for end of line additions must be handled.
805
806 Could be made even smarter, but this works well enough */
807static void
808update_line (old, new, current_line, omax, nmax, inv_botlin)
809 register char *old, *new;
810 int current_line, omax, nmax, inv_botlin;
811{
812 register char *ofd, *ols, *oe, *nfd, *nls, *ne;
813 int temp, lendiff, wsatend, od, nd;
814 int current_invis_chars;
815
816 /* If we're at the right edge of a terminal that supports xn, we're
817 ready to wrap around, so do so. This fixes problems with knowing
818 the exact cursor position and cut-and-paste with certain terminal
819 emulators. In this calculation, TEMP is the physical screen
820 position of the cursor. */
821 temp = _rl_last_c_pos - W_OFFSET(_rl_last_v_pos, visible_wrap_offset);
822 if (temp == screenwidth && _rl_term_autowrap && !_rl_horizontal_scroll_mode
823 && _rl_last_v_pos == current_line - 1)
824 {
825 if (new[0])
826 putc (new[0], rl_outstream);
827 else
828 putc (' ', rl_outstream);
829 _rl_last_c_pos = 1; /* XXX */
830 _rl_last_v_pos++;
831 if (old[0] && new[0])
832 old[0] = new[0];
833 }
834
835 /* Find first difference. */
836 for (ofd = old, nfd = new;
837 (ofd - old < omax) && *ofd && (*ofd == *nfd);
838 ofd++, nfd++)
839 ;
840
841 /* Move to the end of the screen line. ND and OD are used to keep track
842 of the distance between ne and new and oe and old, respectively, to
843 move a subtraction out of each loop. */
844 for (od = ofd - old, oe = ofd; od < omax && *oe; oe++, od++);
845 for (nd = nfd - new, ne = nfd; nd < nmax && *ne; ne++, nd++);
846
847 /* If no difference, continue to next line. */
848 if (ofd == oe && nfd == ne)
849 return;
850
851 wsatend = 1; /* flag for trailing whitespace */
852 ols = oe - 1; /* find last same */
853 nls = ne - 1;
854 while ((ols > ofd) && (nls > nfd) && (*ols == *nls))
855 {
856 if (*ols != ' ')
857 wsatend = 0;
858 ols--;
859 nls--;
860 }
861
862 if (wsatend)
863 {
864 ols = oe;
865 nls = ne;
866 }
867 else if (*ols != *nls)
868 {
869 if (*ols) /* don't step past the NUL */
870 ols++;
871 if (*nls)
872 nls++;
873 }
874
875 /* count of invisible characters in the current invisible line. */
876 current_invis_chars = W_OFFSET (current_line, wrap_offset);
877 if (_rl_last_v_pos != current_line)
878 {
879 _rl_move_vert (current_line);
880 if (current_line == 0 && visible_wrap_offset)
881 _rl_last_c_pos += visible_wrap_offset;
882 }
883
884 /* If this is the first line and there are invisible characters in the
885 prompt string, and the prompt string has not changed, and the current
886 cursor position is before the last invisible character in the prompt,
887 and the index of the character to move to is past the end of the prompt
888 string, then redraw the entire prompt string. We can only do this
889 reliably if the terminal supports a `cr' capability.
890
891 This is not an efficiency hack -- there is a problem with redrawing
892 portions of the prompt string if they contain terminal escape
893 sequences (like drawing the `unbold' sequence without a corresponding
894 `bold') that manifests itself on certain terminals. */
895
896 lendiff = local_prompt ? strlen (local_prompt) : 0;
897 od = ofd - old; /* index of first difference in visible line */
898 if (current_line == 0 && !_rl_horizontal_scroll_mode &&
899 term_cr && lendiff > visible_length && _rl_last_c_pos > 0 &&
900 od > lendiff && _rl_last_c_pos < last_invisible)
901 {
| 824 rl_display_fixed = 0;
825 /* If we are displaying on a single line, and last_lmargin is > 0, we
826 are not displaying any invisible characters, so set visible_wrap_offset
827 to 0. */
828 if (_rl_horizontal_scroll_mode && last_lmargin)
829 visible_wrap_offset = 0;
830 else
831 visible_wrap_offset = wrap_offset;
832 }
833}
834
835/* PWP: update_line() is based on finding the middle difference of each
836 line on the screen; vis:
837
838 /old first difference
839 /beginning of line | /old last same /old EOL
840 v v v v
841old: eddie> Oh, my little gruntle-buggy is to me, as lurgid as
842new: eddie> Oh, my little buggy says to me, as lurgid as
843 ^ ^ ^ ^
844 \beginning of line | \new last same \new end of line
845 \new first difference
846
847 All are character pointers for the sake of speed. Special cases for
848 no differences, as well as for end of line additions must be handled.
849
850 Could be made even smarter, but this works well enough */
851static void
852update_line (old, new, current_line, omax, nmax, inv_botlin)
853 register char *old, *new;
854 int current_line, omax, nmax, inv_botlin;
855{
856 register char *ofd, *ols, *oe, *nfd, *nls, *ne;
857 int temp, lendiff, wsatend, od, nd;
858 int current_invis_chars;
859
860 /* If we're at the right edge of a terminal that supports xn, we're
861 ready to wrap around, so do so. This fixes problems with knowing
862 the exact cursor position and cut-and-paste with certain terminal
863 emulators. In this calculation, TEMP is the physical screen
864 position of the cursor. */
865 temp = _rl_last_c_pos - W_OFFSET(_rl_last_v_pos, visible_wrap_offset);
866 if (temp == screenwidth && _rl_term_autowrap && !_rl_horizontal_scroll_mode
867 && _rl_last_v_pos == current_line - 1)
868 {
869 if (new[0])
870 putc (new[0], rl_outstream);
871 else
872 putc (' ', rl_outstream);
873 _rl_last_c_pos = 1; /* XXX */
874 _rl_last_v_pos++;
875 if (old[0] && new[0])
876 old[0] = new[0];
877 }
878
879 /* Find first difference. */
880 for (ofd = old, nfd = new;
881 (ofd - old < omax) && *ofd && (*ofd == *nfd);
882 ofd++, nfd++)
883 ;
884
885 /* Move to the end of the screen line. ND and OD are used to keep track
886 of the distance between ne and new and oe and old, respectively, to
887 move a subtraction out of each loop. */
888 for (od = ofd - old, oe = ofd; od < omax && *oe; oe++, od++);
889 for (nd = nfd - new, ne = nfd; nd < nmax && *ne; ne++, nd++);
890
891 /* If no difference, continue to next line. */
892 if (ofd == oe && nfd == ne)
893 return;
894
895 wsatend = 1; /* flag for trailing whitespace */
896 ols = oe - 1; /* find last same */
897 nls = ne - 1;
898 while ((ols > ofd) && (nls > nfd) && (*ols == *nls))
899 {
900 if (*ols != ' ')
901 wsatend = 0;
902 ols--;
903 nls--;
904 }
905
906 if (wsatend)
907 {
908 ols = oe;
909 nls = ne;
910 }
911 else if (*ols != *nls)
912 {
913 if (*ols) /* don't step past the NUL */
914 ols++;
915 if (*nls)
916 nls++;
917 }
918
919 /* count of invisible characters in the current invisible line. */
920 current_invis_chars = W_OFFSET (current_line, wrap_offset);
921 if (_rl_last_v_pos != current_line)
922 {
923 _rl_move_vert (current_line);
924 if (current_line == 0 && visible_wrap_offset)
925 _rl_last_c_pos += visible_wrap_offset;
926 }
927
928 /* If this is the first line and there are invisible characters in the
929 prompt string, and the prompt string has not changed, and the current
930 cursor position is before the last invisible character in the prompt,
931 and the index of the character to move to is past the end of the prompt
932 string, then redraw the entire prompt string. We can only do this
933 reliably if the terminal supports a `cr' capability.
934
935 This is not an efficiency hack -- there is a problem with redrawing
936 portions of the prompt string if they contain terminal escape
937 sequences (like drawing the `unbold' sequence without a corresponding
938 `bold') that manifests itself on certain terminals. */
939
940 lendiff = local_prompt ? strlen (local_prompt) : 0;
941 od = ofd - old; /* index of first difference in visible line */
942 if (current_line == 0 && !_rl_horizontal_scroll_mode &&
943 term_cr && lendiff > visible_length && _rl_last_c_pos > 0 &&
944 od > lendiff && _rl_last_c_pos < last_invisible)
945 {
|
| 946#if defined (__MSDOS__)
947 putc ('\r', rl_outstream);
948#else
|
902 tputs (term_cr, 1, _rl_output_character_function);
| 949 tputs (term_cr, 1, _rl_output_character_function);
|
| 950#endif
|
903 _rl_output_some_chars (local_prompt, lendiff);
904 _rl_last_c_pos = lendiff;
905 }
906
907 _rl_move_cursor_relative (od, old);
908
909 /* if (len (new) > len (old)) */
910 lendiff = (nls - nfd) - (ols - ofd);
911
912 /* If we are changing the number of invisible characters in a line, and
913 the spot of first difference is before the end of the invisible chars,
914 lendiff needs to be adjusted. */
915 if (current_line == 0 && !_rl_horizontal_scroll_mode &&
916 current_invis_chars != visible_wrap_offset)
917 lendiff += visible_wrap_offset - current_invis_chars;
918
919 /* Insert (diff (len (old), len (new)) ch. */
920 temp = ne - nfd;
921 if (lendiff > 0)
922 {
923 /* Non-zero if we're increasing the number of lines. */
924 int gl = current_line >= _rl_vis_botlin && inv_botlin > _rl_vis_botlin;
925 /* Sometimes it is cheaper to print the characters rather than
926 use the terminal's capabilities. If we're growing the number
927 of lines, make sure we actually cause the new line to wrap
928 around on auto-wrapping terminals. */
929 if (terminal_can_insert && ((2 * temp) >= lendiff || term_IC) && (!_rl_term_autowrap || !gl))
930 {
931 /* If lendiff > visible_length and _rl_last_c_pos == 0 and
932 _rl_horizontal_scroll_mode == 1, inserting the characters with
933 term_IC or term_ic will screw up the screen because of the
934 invisible characters. We need to just draw them. */
935 if (*ols && (!_rl_horizontal_scroll_mode || _rl_last_c_pos > 0 ||
936 lendiff <= visible_length || !current_invis_chars))
937 {
938 insert_some_chars (nfd, lendiff);
939 _rl_last_c_pos += lendiff;
940 }
941 else if (*ols == 0)
942 {
943 /* At the end of a line the characters do not have to
944 be "inserted". They can just be placed on the screen. */
945 /* However, this screws up the rest of this block, which
946 assumes you've done the insert because you can. */
947 _rl_output_some_chars (nfd, lendiff);
948 _rl_last_c_pos += lendiff;
949 }
950 else
951 {
952 /* We have horizontal scrolling and we are not inserting at
953 the end. We have invisible characters in this line. This
954 is a dumb update. */
955 _rl_output_some_chars (nfd, temp);
956 _rl_last_c_pos += temp;
957 return;
958 }
959 /* Copy (new) chars to screen from first diff to last match. */
960 temp = nls - nfd;
961 if ((temp - lendiff) > 0)
962 {
963 _rl_output_some_chars (nfd + lendiff, temp - lendiff);
964 _rl_last_c_pos += temp - lendiff;
965 }
966 }
967 else
968 {
969 /* cannot insert chars, write to EOL */
970 _rl_output_some_chars (nfd, temp);
971 _rl_last_c_pos += temp;
972 }
973 }
974 else /* Delete characters from line. */
975 {
976 /* If possible and inexpensive to use terminal deletion, then do so. */
977 if (term_dc && (2 * temp) >= -lendiff)
978 {
979 /* If all we're doing is erasing the invisible characters in the
980 prompt string, don't bother. It screws up the assumptions
981 about what's on the screen. */
982 if (_rl_horizontal_scroll_mode && _rl_last_c_pos == 0 &&
983 -lendiff == visible_wrap_offset)
984 lendiff = 0;
985
986 if (lendiff)
987 delete_chars (-lendiff); /* delete (diff) characters */
988
989 /* Copy (new) chars to screen from first diff to last match */
990 temp = nls - nfd;
991 if (temp > 0)
992 {
993 _rl_output_some_chars (nfd, temp);
994 _rl_last_c_pos += temp;
995 }
996 }
997 /* Otherwise, print over the existing material. */
998 else
999 {
1000 if (temp > 0)
1001 {
1002 _rl_output_some_chars (nfd, temp);
1003 _rl_last_c_pos += temp;
1004 }
1005 lendiff = (oe - old) - (ne - new);
1006 if (lendiff)
1007 {
1008 if (_rl_term_autowrap && current_line < inv_botlin)
1009 space_to_eol (lendiff);
1010 else
1011 _rl_clear_to_eol (lendiff);
1012 }
1013 }
1014 }
1015}
1016
1017/* Tell the update routines that we have moved onto a new (empty) line. */
1018int
1019rl_on_new_line ()
1020{
1021 if (visible_line)
1022 visible_line[0] = '\0';
1023
1024 _rl_last_c_pos = _rl_last_v_pos = 0;
1025 _rl_vis_botlin = last_lmargin = 0;
1026 if (vis_lbreaks)
1027 vis_lbreaks[0] = vis_lbreaks[1] = 0;
1028 visible_wrap_offset = 0;
1029 return 0;
1030}
1031
| 951 _rl_output_some_chars (local_prompt, lendiff);
952 _rl_last_c_pos = lendiff;
953 }
954
955 _rl_move_cursor_relative (od, old);
956
957 /* if (len (new) > len (old)) */
958 lendiff = (nls - nfd) - (ols - ofd);
959
960 /* If we are changing the number of invisible characters in a line, and
961 the spot of first difference is before the end of the invisible chars,
962 lendiff needs to be adjusted. */
963 if (current_line == 0 && !_rl_horizontal_scroll_mode &&
964 current_invis_chars != visible_wrap_offset)
965 lendiff += visible_wrap_offset - current_invis_chars;
966
967 /* Insert (diff (len (old), len (new)) ch. */
968 temp = ne - nfd;
969 if (lendiff > 0)
970 {
971 /* Non-zero if we're increasing the number of lines. */
972 int gl = current_line >= _rl_vis_botlin && inv_botlin > _rl_vis_botlin;
973 /* Sometimes it is cheaper to print the characters rather than
974 use the terminal's capabilities. If we're growing the number
975 of lines, make sure we actually cause the new line to wrap
976 around on auto-wrapping terminals. */
977 if (terminal_can_insert && ((2 * temp) >= lendiff || term_IC) && (!_rl_term_autowrap || !gl))
978 {
979 /* If lendiff > visible_length and _rl_last_c_pos == 0 and
980 _rl_horizontal_scroll_mode == 1, inserting the characters with
981 term_IC or term_ic will screw up the screen because of the
982 invisible characters. We need to just draw them. */
983 if (*ols && (!_rl_horizontal_scroll_mode || _rl_last_c_pos > 0 ||
984 lendiff <= visible_length || !current_invis_chars))
985 {
986 insert_some_chars (nfd, lendiff);
987 _rl_last_c_pos += lendiff;
988 }
989 else if (*ols == 0)
990 {
991 /* At the end of a line the characters do not have to
992 be "inserted". They can just be placed on the screen. */
993 /* However, this screws up the rest of this block, which
994 assumes you've done the insert because you can. */
995 _rl_output_some_chars (nfd, lendiff);
996 _rl_last_c_pos += lendiff;
997 }
998 else
999 {
1000 /* We have horizontal scrolling and we are not inserting at
1001 the end. We have invisible characters in this line. This
1002 is a dumb update. */
1003 _rl_output_some_chars (nfd, temp);
1004 _rl_last_c_pos += temp;
1005 return;
1006 }
1007 /* Copy (new) chars to screen from first diff to last match. */
1008 temp = nls - nfd;
1009 if ((temp - lendiff) > 0)
1010 {
1011 _rl_output_some_chars (nfd + lendiff, temp - lendiff);
1012 _rl_last_c_pos += temp - lendiff;
1013 }
1014 }
1015 else
1016 {
1017 /* cannot insert chars, write to EOL */
1018 _rl_output_some_chars (nfd, temp);
1019 _rl_last_c_pos += temp;
1020 }
1021 }
1022 else /* Delete characters from line. */
1023 {
1024 /* If possible and inexpensive to use terminal deletion, then do so. */
1025 if (term_dc && (2 * temp) >= -lendiff)
1026 {
1027 /* If all we're doing is erasing the invisible characters in the
1028 prompt string, don't bother. It screws up the assumptions
1029 about what's on the screen. */
1030 if (_rl_horizontal_scroll_mode && _rl_last_c_pos == 0 &&
1031 -lendiff == visible_wrap_offset)
1032 lendiff = 0;
1033
1034 if (lendiff)
1035 delete_chars (-lendiff); /* delete (diff) characters */
1036
1037 /* Copy (new) chars to screen from first diff to last match */
1038 temp = nls - nfd;
1039 if (temp > 0)
1040 {
1041 _rl_output_some_chars (nfd, temp);
1042 _rl_last_c_pos += temp;
1043 }
1044 }
1045 /* Otherwise, print over the existing material. */
1046 else
1047 {
1048 if (temp > 0)
1049 {
1050 _rl_output_some_chars (nfd, temp);
1051 _rl_last_c_pos += temp;
1052 }
1053 lendiff = (oe - old) - (ne - new);
1054 if (lendiff)
1055 {
1056 if (_rl_term_autowrap && current_line < inv_botlin)
1057 space_to_eol (lendiff);
1058 else
1059 _rl_clear_to_eol (lendiff);
1060 }
1061 }
1062 }
1063}
1064
1065/* Tell the update routines that we have moved onto a new (empty) line. */
1066int
1067rl_on_new_line ()
1068{
1069 if (visible_line)
1070 visible_line[0] = '\0';
1071
1072 _rl_last_c_pos = _rl_last_v_pos = 0;
1073 _rl_vis_botlin = last_lmargin = 0;
1074 if (vis_lbreaks)
1075 vis_lbreaks[0] = vis_lbreaks[1] = 0;
1076 visible_wrap_offset = 0;
1077 return 0;
1078}
1079
|
| 1080/* Tell the update routines that we have moved onto a new line with the
1081 prompt already displayed. Code originally from the version of readline
1082 distributed with CLISP. */
1083int
1084rl_on_new_line_with_prompt ()
1085{
1086 int prompt_size, i, l, real_screenwidth, newlines;
1087 char *prompt_last_line;
1088
1089 /* Initialize visible_line and invisible_line to ensure that they can hold
1090 the already-displayed prompt. */
1091 prompt_size = strlen (rl_prompt) + 1;
1092 init_line_structures (prompt_size);
1093
1094 /* Make sure the line structures hold the already-displayed prompt for
1095 redisplay. */
1096 strcpy (visible_line, rl_prompt);
1097 strcpy (invisible_line, rl_prompt);
1098
1099 /* If the prompt contains newlines, take the last tail. */
1100 prompt_last_line = strrchr (rl_prompt, '\n');
1101 if (!prompt_last_line)
1102 prompt_last_line = rl_prompt;
1103
1104 l = strlen (prompt_last_line);
1105 _rl_last_c_pos = l;
1106
1107 /* Dissect prompt_last_line into screen lines. Note that here we have
1108 to use the real screenwidth. Readline's notion of screenwidth might be
1109 one less, see terminal.c. */
1110 real_screenwidth = screenwidth + (_rl_term_autowrap ? 0 : 1);
1111 _rl_last_v_pos = l / real_screenwidth;
1112 /* If the prompt length is a multiple of real_screenwidth, we don't know
1113 whether the cursor is at the end of the last line, or already at the
1114 beginning of the next line. Output a newline just to be safe. */
1115 if (l > 0 && (l % real_screenwidth) == 0)
1116 _rl_output_some_chars ("\n", 1);
1117 last_lmargin = 0;
1118
1119 newlines = 0; i = 0;
1120 while (i <= l)
1121 {
1122 _rl_vis_botlin = newlines;
1123 vis_lbreaks[newlines++] = i;
1124 i += real_screenwidth;
1125 }
1126 vis_lbreaks[newlines] = l;
1127 visible_wrap_offset = 0;
1128
1129 return 0;
1130}
1131
|
1032/* Actually update the display, period. */
1033int
1034rl_forced_update_display ()
1035{
1036 if (visible_line)
1037 {
1038 register char *temp = visible_line;
1039
1040 while (*temp)
1041 *temp++ = '\0';
1042 }
1043 rl_on_new_line ();
1044 forced_display++;
1045 (*rl_redisplay_function) ();
1046 return 0;
1047}
1048
1049/* Move the cursor from _rl_last_c_pos to NEW, which are buffer indices.
1050 DATA is the contents of the screen line of interest; i.e., where
1051 the movement is being done. */
1052void
1053_rl_move_cursor_relative (new, data)
1054 int new;
1055 char *data;
1056{
1057 register int i;
1058
1059 /* If we don't have to do anything, then return. */
1060 if (_rl_last_c_pos == new) return;
1061
1062 /* It may be faster to output a CR, and then move forwards instead
1063 of moving backwards. */
1064 /* i == current physical cursor position. */
1065 i = _rl_last_c_pos - W_OFFSET(_rl_last_v_pos, visible_wrap_offset);
1066 if (new == 0 || CR_FASTER (new, _rl_last_c_pos) ||
1067 (_rl_term_autowrap && i == screenwidth))
1068 {
1069#if defined (__MSDOS__)
1070 putc ('\r', rl_outstream);
1071#else
1072 tputs (term_cr, 1, _rl_output_character_function);
1073#endif /* !__MSDOS__ */
1074 _rl_last_c_pos = 0;
1075 }
1076
1077 if (_rl_last_c_pos < new)
1078 {
1079 /* Move the cursor forward. We do it by printing the command
1080 to move the cursor forward if there is one, else print that
1081 portion of the output buffer again. Which is cheaper? */
1082
1083 /* The above comment is left here for posterity. It is faster
1084 to print one character (non-control) than to print a control
1085 sequence telling the terminal to move forward one character.
1086 That kind of control is for people who don't know what the
1087 data is underneath the cursor. */
1088#if defined (HACK_TERMCAP_MOTION)
| 1132/* Actually update the display, period. */
1133int
1134rl_forced_update_display ()
1135{
1136 if (visible_line)
1137 {
1138 register char *temp = visible_line;
1139
1140 while (*temp)
1141 *temp++ = '\0';
1142 }
1143 rl_on_new_line ();
1144 forced_display++;
1145 (*rl_redisplay_function) ();
1146 return 0;
1147}
1148
1149/* Move the cursor from _rl_last_c_pos to NEW, which are buffer indices.
1150 DATA is the contents of the screen line of interest; i.e., where
1151 the movement is being done. */
1152void
1153_rl_move_cursor_relative (new, data)
1154 int new;
1155 char *data;
1156{
1157 register int i;
1158
1159 /* If we don't have to do anything, then return. */
1160 if (_rl_last_c_pos == new) return;
1161
1162 /* It may be faster to output a CR, and then move forwards instead
1163 of moving backwards. */
1164 /* i == current physical cursor position. */
1165 i = _rl_last_c_pos - W_OFFSET(_rl_last_v_pos, visible_wrap_offset);
1166 if (new == 0 || CR_FASTER (new, _rl_last_c_pos) ||
1167 (_rl_term_autowrap && i == screenwidth))
1168 {
1169#if defined (__MSDOS__)
1170 putc ('\r', rl_outstream);
1171#else
1172 tputs (term_cr, 1, _rl_output_character_function);
1173#endif /* !__MSDOS__ */
1174 _rl_last_c_pos = 0;
1175 }
1176
1177 if (_rl_last_c_pos < new)
1178 {
1179 /* Move the cursor forward. We do it by printing the command
1180 to move the cursor forward if there is one, else print that
1181 portion of the output buffer again. Which is cheaper? */
1182
1183 /* The above comment is left here for posterity. It is faster
1184 to print one character (non-control) than to print a control
1185 sequence telling the terminal to move forward one character.
1186 That kind of control is for people who don't know what the
1187 data is underneath the cursor. */
1188#if defined (HACK_TERMCAP_MOTION)
|
1089 extern char *term_forward_char;
1090
| |
1091 if (term_forward_char)
1092 for (i = _rl_last_c_pos; i < new; i++)
1093 tputs (term_forward_char, 1, _rl_output_character_function);
1094 else
1095 for (i = _rl_last_c_pos; i < new; i++)
1096 putc (data[i], rl_outstream);
1097#else
1098 for (i = _rl_last_c_pos; i < new; i++)
1099 putc (data[i], rl_outstream);
1100#endif /* HACK_TERMCAP_MOTION */
1101 }
1102 else if (_rl_last_c_pos > new)
1103 _rl_backspace (_rl_last_c_pos - new);
1104 _rl_last_c_pos = new;
1105}
1106
1107/* PWP: move the cursor up or down. */
1108void
1109_rl_move_vert (to)
1110 int to;
1111{
1112 register int delta, i;
1113
1114 if (_rl_last_v_pos == to || to > screenheight)
1115 return;
1116
| 1189 if (term_forward_char)
1190 for (i = _rl_last_c_pos; i < new; i++)
1191 tputs (term_forward_char, 1, _rl_output_character_function);
1192 else
1193 for (i = _rl_last_c_pos; i < new; i++)
1194 putc (data[i], rl_outstream);
1195#else
1196 for (i = _rl_last_c_pos; i < new; i++)
1197 putc (data[i], rl_outstream);
1198#endif /* HACK_TERMCAP_MOTION */
1199 }
1200 else if (_rl_last_c_pos > new)
1201 _rl_backspace (_rl_last_c_pos - new);
1202 _rl_last_c_pos = new;
1203}
1204
1205/* PWP: move the cursor up or down. */
1206void
1207_rl_move_vert (to)
1208 int to;
1209{
1210 register int delta, i;
1211
1212 if (_rl_last_v_pos == to || to > screenheight)
1213 return;
1214
|
1117#if defined (__GO32__)
1118 {
1119 int row, col;
1120
1121 ScreenGetCursor (&row, &col);
1122 ScreenSetCursor ((row + to - _rl_last_v_pos), col);
1123 }
1124#else /* !__GO32__ */
1125
| |
1126 if ((delta = to - _rl_last_v_pos) > 0)
1127 {
1128 for (i = 0; i < delta; i++)
1129 putc ('\n', rl_outstream);
| 1215 if ((delta = to - _rl_last_v_pos) > 0)
1216 {
1217 for (i = 0; i < delta; i++)
1218 putc ('\n', rl_outstream);
|
| 1219#if defined (__MSDOS__)
1220 putc ('\r', rl_outstream);
1221#else
|
1130 tputs (term_cr, 1, _rl_output_character_function);
| 1222 tputs (term_cr, 1, _rl_output_character_function);
|
| 1223#endif
|
1131 _rl_last_c_pos = 0;
1132 }
1133 else
1134 { /* delta < 0 */
1135 if (term_up && *term_up)
1136 for (i = 0; i < -delta; i++)
1137 tputs (term_up, 1, _rl_output_character_function);
1138 }
| 1224 _rl_last_c_pos = 0;
1225 }
1226 else
1227 { /* delta < 0 */
1228 if (term_up && *term_up)
1229 for (i = 0; i < -delta; i++)
1230 tputs (term_up, 1, _rl_output_character_function);
1231 }
|
1139#endif /* !__GO32__ */
| 1232
|
1140 _rl_last_v_pos = to; /* Now TO is here */
1141}
1142
1143/* Physically print C on rl_outstream. This is for functions which know
1144 how to optimize the display. Return the number of characters output. */
1145int
1146rl_show_char (c)
1147 int c;
1148{
1149 int n = 1;
1150 if (META_CHAR (c) && (_rl_output_meta_chars == 0))
1151 {
1152 fprintf (rl_outstream, "M-");
1153 n += 2;
1154 c = UNMETA (c);
1155 }
1156
1157#if defined (DISPLAY_TABS)
1158 if ((CTRL_CHAR (c) && c != '\t') || c == RUBOUT)
1159#else
1160 if (CTRL_CHAR (c) || c == RUBOUT)
1161#endif /* !DISPLAY_TABS */
1162 {
1163 fprintf (rl_outstream, "C-");
1164 n += 2;
1165 c = CTRL_CHAR (c) ? UNCTRL (c) : '?';
1166 }
1167
1168 putc (c, rl_outstream);
1169 fflush (rl_outstream);
1170 return n;
1171}
1172
1173int
1174rl_character_len (c, pos)
1175 register int c, pos;
1176{
1177 unsigned char uc;
1178
1179 uc = (unsigned char)c;
1180
1181 if (META_CHAR (uc))
1182 return ((_rl_output_meta_chars == 0) ? 4 : 1);
1183
1184 if (uc == '\t')
1185 {
1186#if defined (DISPLAY_TABS)
1187 return (((pos | 7) + 1) - pos);
1188#else
1189 return (2);
1190#endif /* !DISPLAY_TABS */
1191 }
1192
1193 if (CTRL_CHAR (c) || c == RUBOUT)
1194 return (2);
1195
1196 return ((isprint (uc)) ? 1 : 2);
1197}
1198
1199/* How to print things in the "echo-area". The prompt is treated as a
1200 mini-modeline. */
1201
1202#if defined (USE_VARARGS)
1203int
1204#if defined (PREFER_STDARG)
1205rl_message (const char *format, ...)
1206#else
1207rl_message (va_alist)
1208 va_dcl
1209#endif
1210{
1211 va_list args;
1212#if defined (PREFER_VARARGS)
1213 char *format;
1214#endif
1215
1216#if defined (PREFER_STDARG)
1217 va_start (args, format);
1218#else
1219 va_start (args);
1220 format = va_arg (args, char *);
1221#endif
1222
1223 vsprintf (msg_buf, format, args);
1224 va_end (args);
1225
1226 rl_display_prompt = msg_buf;
1227 (*rl_redisplay_function) ();
1228 return 0;
1229}
1230#else /* !USE_VARARGS */
1231int
1232rl_message (format, arg1, arg2)
1233 char *format;
1234{
1235 sprintf (msg_buf, format, arg1, arg2);
1236 rl_display_prompt = msg_buf;
1237 (*rl_redisplay_function) ();
1238 return 0;
1239}
1240#endif /* !USE_VARARGS */
1241
1242/* How to clear things from the "echo-area". */
1243int
1244rl_clear_message ()
1245{
1246 rl_display_prompt = rl_prompt;
1247 (*rl_redisplay_function) ();
1248 return 0;
1249}
1250
1251int
1252rl_reset_line_state ()
1253{
1254 rl_on_new_line ();
1255
1256 rl_display_prompt = rl_prompt ? rl_prompt : "";
1257 forced_display = 1;
1258 return 0;
1259}
1260
1261static char *saved_local_prompt;
1262static char *saved_local_prefix;
1263static int saved_last_invisible;
1264static int saved_visible_length;
1265
1266void
1267rl_save_prompt ()
1268{
1269 saved_local_prompt = local_prompt;
1270 saved_local_prefix = local_prompt_prefix;
1271 saved_last_invisible = last_invisible;
1272 saved_visible_length = visible_length;
1273
1274 local_prompt = local_prompt_prefix = (char *)0;
1275 last_invisible = visible_length = 0;
1276}
1277
1278void
1279rl_restore_prompt ()
1280{
1281 if (local_prompt)
1282 free (local_prompt);
1283 if (local_prompt_prefix)
1284 free (local_prompt_prefix);
1285
1286 local_prompt = saved_local_prompt;
1287 local_prompt_prefix = saved_local_prefix;
1288 last_invisible = saved_last_invisible;
1289 visible_length = saved_visible_length;
1290}
1291
1292char *
1293_rl_make_prompt_for_search (pchar)
1294 int pchar;
1295{
1296 int len;
1297 char *pmt;
1298
1299 rl_save_prompt ();
1300
1301 if (saved_local_prompt == 0)
1302 {
1303 len = (rl_prompt && *rl_prompt) ? strlen (rl_prompt) : 0;
1304 pmt = xmalloc (len + 2);
1305 if (len)
1306 strcpy (pmt, rl_prompt);
1307 pmt[len] = pchar;
1308 pmt[len+1] = '\0';
1309 }
1310 else
1311 {
1312 len = *saved_local_prompt ? strlen (saved_local_prompt) : 0;
1313 pmt = xmalloc (len + 2);
1314 if (len)
1315 strcpy (pmt, saved_local_prompt);
1316 pmt[len] = pchar;
1317 pmt[len+1] = '\0';
1318 local_prompt = savestring (pmt);
1319 last_invisible = saved_last_invisible;
1320 visible_length = saved_visible_length + 1;
1321 }
1322 return pmt;
1323}
1324
1325/* Quick redisplay hack when erasing characters at the end of the line. */
1326void
1327_rl_erase_at_end_of_line (l)
1328 int l;
1329{
1330 register int i;
1331
1332 _rl_backspace (l);
1333 for (i = 0; i < l; i++)
1334 putc (' ', rl_outstream);
1335 _rl_backspace (l);
1336 for (i = 0; i < l; i++)
1337 visible_line[--_rl_last_c_pos] = '\0';
1338 rl_display_fixed++;
1339}
1340
1341/* Clear to the end of the line. COUNT is the minimum
1342 number of character spaces to clear, */
1343void
1344_rl_clear_to_eol (count)
1345 int count;
1346{
| 1233 _rl_last_v_pos = to; /* Now TO is here */
1234}
1235
1236/* Physically print C on rl_outstream. This is for functions which know
1237 how to optimize the display. Return the number of characters output. */
1238int
1239rl_show_char (c)
1240 int c;
1241{
1242 int n = 1;
1243 if (META_CHAR (c) && (_rl_output_meta_chars == 0))
1244 {
1245 fprintf (rl_outstream, "M-");
1246 n += 2;
1247 c = UNMETA (c);
1248 }
1249
1250#if defined (DISPLAY_TABS)
1251 if ((CTRL_CHAR (c) && c != '\t') || c == RUBOUT)
1252#else
1253 if (CTRL_CHAR (c) || c == RUBOUT)
1254#endif /* !DISPLAY_TABS */
1255 {
1256 fprintf (rl_outstream, "C-");
1257 n += 2;
1258 c = CTRL_CHAR (c) ? UNCTRL (c) : '?';
1259 }
1260
1261 putc (c, rl_outstream);
1262 fflush (rl_outstream);
1263 return n;
1264}
1265
1266int
1267rl_character_len (c, pos)
1268 register int c, pos;
1269{
1270 unsigned char uc;
1271
1272 uc = (unsigned char)c;
1273
1274 if (META_CHAR (uc))
1275 return ((_rl_output_meta_chars == 0) ? 4 : 1);
1276
1277 if (uc == '\t')
1278 {
1279#if defined (DISPLAY_TABS)
1280 return (((pos | 7) + 1) - pos);
1281#else
1282 return (2);
1283#endif /* !DISPLAY_TABS */
1284 }
1285
1286 if (CTRL_CHAR (c) || c == RUBOUT)
1287 return (2);
1288
1289 return ((isprint (uc)) ? 1 : 2);
1290}
1291
1292/* How to print things in the "echo-area". The prompt is treated as a
1293 mini-modeline. */
1294
1295#if defined (USE_VARARGS)
1296int
1297#if defined (PREFER_STDARG)
1298rl_message (const char *format, ...)
1299#else
1300rl_message (va_alist)
1301 va_dcl
1302#endif
1303{
1304 va_list args;
1305#if defined (PREFER_VARARGS)
1306 char *format;
1307#endif
1308
1309#if defined (PREFER_STDARG)
1310 va_start (args, format);
1311#else
1312 va_start (args);
1313 format = va_arg (args, char *);
1314#endif
1315
1316 vsprintf (msg_buf, format, args);
1317 va_end (args);
1318
1319 rl_display_prompt = msg_buf;
1320 (*rl_redisplay_function) ();
1321 return 0;
1322}
1323#else /* !USE_VARARGS */
1324int
1325rl_message (format, arg1, arg2)
1326 char *format;
1327{
1328 sprintf (msg_buf, format, arg1, arg2);
1329 rl_display_prompt = msg_buf;
1330 (*rl_redisplay_function) ();
1331 return 0;
1332}
1333#endif /* !USE_VARARGS */
1334
1335/* How to clear things from the "echo-area". */
1336int
1337rl_clear_message ()
1338{
1339 rl_display_prompt = rl_prompt;
1340 (*rl_redisplay_function) ();
1341 return 0;
1342}
1343
1344int
1345rl_reset_line_state ()
1346{
1347 rl_on_new_line ();
1348
1349 rl_display_prompt = rl_prompt ? rl_prompt : "";
1350 forced_display = 1;
1351 return 0;
1352}
1353
1354static char *saved_local_prompt;
1355static char *saved_local_prefix;
1356static int saved_last_invisible;
1357static int saved_visible_length;
1358
1359void
1360rl_save_prompt ()
1361{
1362 saved_local_prompt = local_prompt;
1363 saved_local_prefix = local_prompt_prefix;
1364 saved_last_invisible = last_invisible;
1365 saved_visible_length = visible_length;
1366
1367 local_prompt = local_prompt_prefix = (char *)0;
1368 last_invisible = visible_length = 0;
1369}
1370
1371void
1372rl_restore_prompt ()
1373{
1374 if (local_prompt)
1375 free (local_prompt);
1376 if (local_prompt_prefix)
1377 free (local_prompt_prefix);
1378
1379 local_prompt = saved_local_prompt;
1380 local_prompt_prefix = saved_local_prefix;
1381 last_invisible = saved_last_invisible;
1382 visible_length = saved_visible_length;
1383}
1384
1385char *
1386_rl_make_prompt_for_search (pchar)
1387 int pchar;
1388{
1389 int len;
1390 char *pmt;
1391
1392 rl_save_prompt ();
1393
1394 if (saved_local_prompt == 0)
1395 {
1396 len = (rl_prompt && *rl_prompt) ? strlen (rl_prompt) : 0;
1397 pmt = xmalloc (len + 2);
1398 if (len)
1399 strcpy (pmt, rl_prompt);
1400 pmt[len] = pchar;
1401 pmt[len+1] = '\0';
1402 }
1403 else
1404 {
1405 len = *saved_local_prompt ? strlen (saved_local_prompt) : 0;
1406 pmt = xmalloc (len + 2);
1407 if (len)
1408 strcpy (pmt, saved_local_prompt);
1409 pmt[len] = pchar;
1410 pmt[len+1] = '\0';
1411 local_prompt = savestring (pmt);
1412 last_invisible = saved_last_invisible;
1413 visible_length = saved_visible_length + 1;
1414 }
1415 return pmt;
1416}
1417
1418/* Quick redisplay hack when erasing characters at the end of the line. */
1419void
1420_rl_erase_at_end_of_line (l)
1421 int l;
1422{
1423 register int i;
1424
1425 _rl_backspace (l);
1426 for (i = 0; i < l; i++)
1427 putc (' ', rl_outstream);
1428 _rl_backspace (l);
1429 for (i = 0; i < l; i++)
1430 visible_line[--_rl_last_c_pos] = '\0';
1431 rl_display_fixed++;
1432}
1433
1434/* Clear to the end of the line. COUNT is the minimum
1435 number of character spaces to clear, */
1436void
1437_rl_clear_to_eol (count)
1438 int count;
1439{
|
1347#if !defined (__GO32__)
| |
1348 if (term_clreol)
1349 tputs (term_clreol, 1, _rl_output_character_function);
1350 else if (count)
| 1440 if (term_clreol)
1441 tputs (term_clreol, 1, _rl_output_character_function);
1442 else if (count)
|
1351#endif /* !__GO32__ */
| |
1352 space_to_eol (count);
1353}
1354
1355/* Clear to the end of the line using spaces. COUNT is the minimum
1356 number of character spaces to clear, */
1357static void
1358space_to_eol (count)
1359 int count;
1360{
1361 register int i;
1362
1363 for (i = 0; i < count; i++)
1364 putc (' ', rl_outstream);
1365
1366 _rl_last_c_pos += count;
1367}
1368
1369void
1370_rl_clear_screen ()
1371{
| 1443 space_to_eol (count);
1444}
1445
1446/* Clear to the end of the line using spaces. COUNT is the minimum
1447 number of character spaces to clear, */
1448static void
1449space_to_eol (count)
1450 int count;
1451{
1452 register int i;
1453
1454 for (i = 0; i < count; i++)
1455 putc (' ', rl_outstream);
1456
1457 _rl_last_c_pos += count;
1458}
1459
1460void
1461_rl_clear_screen ()
1462{
|
1372#if !defined (__GO32__)
| |
1373 if (term_clrpag)
1374 tputs (term_clrpag, 1, _rl_output_character_function);
1375 else
| 1463 if (term_clrpag)
1464 tputs (term_clrpag, 1, _rl_output_character_function);
1465 else
|
1376#endif /* !__GO32__ */
| |
1377 crlf ();
1378}
1379
1380/* Insert COUNT characters from STRING to the output stream. */
1381static void
1382insert_some_chars (string, count)
1383 char *string;
1384 int count;
1385{
| 1466 crlf ();
1467}
1468
1469/* Insert COUNT characters from STRING to the output stream. */
1470static void
1471insert_some_chars (string, count)
1472 char *string;
1473 int count;
1474{
|
1386#if defined (__GO32__)
1387 int row, col, width;
1388 char *row_start;
1389
1390 ScreenGetCursor (&row, &col);
1391 width = ScreenCols ();
1392 row_start = ScreenPrimary + (row * width);
1393
1394 memcpy (row_start + col + count, row_start + col, width - col - count);
1395
1396 /* Place the text on the screen. */
1397 _rl_output_some_chars (string, count);
1398#else /* !_GO32 */
1399
| |
1400 /* If IC is defined, then we do not have to "enter" insert mode. */
1401 if (term_IC)
1402 {
1403 char *buffer;
1404 buffer = tgoto (term_IC, 0, count);
1405 tputs (buffer, 1, _rl_output_character_function);
1406 _rl_output_some_chars (string, count);
1407 }
1408 else
1409 {
1410 register int i;
1411
1412 /* If we have to turn on insert-mode, then do so. */
1413 if (term_im && *term_im)
1414 tputs (term_im, 1, _rl_output_character_function);
1415
1416 /* If there is a special command for inserting characters, then
1417 use that first to open up the space. */
1418 if (term_ic && *term_ic)
1419 {
1420 for (i = count; i--; )
1421 tputs (term_ic, 1, _rl_output_character_function);
1422 }
1423
1424 /* Print the text. */
1425 _rl_output_some_chars (string, count);
1426
1427 /* If there is a string to turn off insert mode, we had best use
1428 it now. */
1429 if (term_ei && *term_ei)
1430 tputs (term_ei, 1, _rl_output_character_function);
1431 }
| 1475 /* If IC is defined, then we do not have to "enter" insert mode. */
1476 if (term_IC)
1477 {
1478 char *buffer;
1479 buffer = tgoto (term_IC, 0, count);
1480 tputs (buffer, 1, _rl_output_character_function);
1481 _rl_output_some_chars (string, count);
1482 }
1483 else
1484 {
1485 register int i;
1486
1487 /* If we have to turn on insert-mode, then do so. */
1488 if (term_im && *term_im)
1489 tputs (term_im, 1, _rl_output_character_function);
1490
1491 /* If there is a special command for inserting characters, then
1492 use that first to open up the space. */
1493 if (term_ic && *term_ic)
1494 {
1495 for (i = count; i--; )
1496 tputs (term_ic, 1, _rl_output_character_function);
1497 }
1498
1499 /* Print the text. */
1500 _rl_output_some_chars (string, count);
1501
1502 /* If there is a string to turn off insert mode, we had best use
1503 it now. */
1504 if (term_ei && *term_ei)
1505 tputs (term_ei, 1, _rl_output_character_function);
1506 }
|
1432#endif /* !__GO32__ */
| |
1433}
1434
1435/* Delete COUNT characters from the display line. */
1436static void
1437delete_chars (count)
1438 int count;
1439{
| 1507}
1508
1509/* Delete COUNT characters from the display line. */
1510static void
1511delete_chars (count)
1512 int count;
1513{
|
1440#if defined (__GO32__)
1441 int row, col, width;
1442 char *row_start;
1443
1444 ScreenGetCursor (&row, &col);
1445 width = ScreenCols ();
1446 row_start = ScreenPrimary + (row * width);
1447
1448 memcpy (row_start + col, row_start + col + count, width - col - count);
1449 memset (row_start + width - count, 0, count * 2);
1450#else /* !_GO32 */
1451
| |
1452 if (count > screenwidth) /* XXX */
1453 return;
1454
1455 if (term_DC && *term_DC)
1456 {
1457 char *buffer;
1458 buffer = tgoto (term_DC, count, count);
1459 tputs (buffer, count, _rl_output_character_function);
1460 }
1461 else
1462 {
1463 if (term_dc && *term_dc)
1464 while (count--)
1465 tputs (term_dc, 1, _rl_output_character_function);
1466 }
| 1514 if (count > screenwidth) /* XXX */
1515 return;
1516
1517 if (term_DC && *term_DC)
1518 {
1519 char *buffer;
1520 buffer = tgoto (term_DC, count, count);
1521 tputs (buffer, count, _rl_output_character_function);
1522 }
1523 else
1524 {
1525 if (term_dc && *term_dc)
1526 while (count--)
1527 tputs (term_dc, 1, _rl_output_character_function);
1528 }
|
1467#endif /* !__GO32__ */
| |
1468}
1469
1470void
1471_rl_update_final ()
1472{
1473 int full_lines;
1474
1475 full_lines = 0;
1476 /* If the cursor is the only thing on an otherwise-blank last line,
1477 compensate so we don't print an extra CRLF. */
1478 if (_rl_vis_botlin && _rl_last_c_pos == 0 &&
1479 visible_line[vis_lbreaks[_rl_vis_botlin]] == 0)
1480 {
1481 _rl_vis_botlin--;
1482 full_lines = 1;
1483 }
1484 _rl_move_vert (_rl_vis_botlin);
1485 /* If we've wrapped lines, remove the final xterm line-wrap flag. */
1486 if (full_lines && _rl_term_autowrap && (VIS_LLEN(_rl_vis_botlin) == screenwidth))
1487 {
1488 char *last_line;
| 1529}
1530
1531void
1532_rl_update_final ()
1533{
1534 int full_lines;
1535
1536 full_lines = 0;
1537 /* If the cursor is the only thing on an otherwise-blank last line,
1538 compensate so we don't print an extra CRLF. */
1539 if (_rl_vis_botlin && _rl_last_c_pos == 0 &&
1540 visible_line[vis_lbreaks[_rl_vis_botlin]] == 0)
1541 {
1542 _rl_vis_botlin--;
1543 full_lines = 1;
1544 }
1545 _rl_move_vert (_rl_vis_botlin);
1546 /* If we've wrapped lines, remove the final xterm line-wrap flag. */
1547 if (full_lines && _rl_term_autowrap && (VIS_LLEN(_rl_vis_botlin) == screenwidth))
1548 {
1549 char *last_line;
|
| 1550#if 0
|
1489 last_line = &visible_line[inv_lbreaks[_rl_vis_botlin]];
| 1551 last_line = &visible_line[inv_lbreaks[_rl_vis_botlin]];
|
| 1552#else
1553 last_line = &visible_line[vis_lbreaks[_rl_vis_botlin]];
1554#endif
|
1490 _rl_move_cursor_relative (screenwidth - 1, last_line);
1491 _rl_clear_to_eol (0);
1492 putc (last_line[screenwidth - 1], rl_outstream);
1493 }
1494 _rl_vis_botlin = 0;
1495 crlf ();
1496 fflush (rl_outstream);
1497 rl_display_fixed++;
1498}
1499
1500/* Move to the start of the current line. */
1501static void
1502cr ()
1503{
1504 if (term_cr)
1505 {
| 1555 _rl_move_cursor_relative (screenwidth - 1, last_line);
1556 _rl_clear_to_eol (0);
1557 putc (last_line[screenwidth - 1], rl_outstream);
1558 }
1559 _rl_vis_botlin = 0;
1560 crlf ();
1561 fflush (rl_outstream);
1562 rl_display_fixed++;
1563}
1564
1565/* Move to the start of the current line. */
1566static void
1567cr ()
1568{
1569 if (term_cr)
1570 {
|
| 1571#if defined (__MSDOS__)
1572 putc ('\r', rl_outstream);
1573#else
|
1506 tputs (term_cr, 1, _rl_output_character_function);
| 1574 tputs (term_cr, 1, _rl_output_character_function);
|
| 1575#endif
|
1507 _rl_last_c_pos = 0;
1508 }
1509}
1510
| 1576 _rl_last_c_pos = 0;
1577 }
1578}
1579
|
| 1580/* Redraw the last line of a multi-line prompt that may possibly contain
1581 terminal escape sequences. Called with the cursor at column 0 of the
1582 line to draw the prompt on. */
1583static void
1584redraw_prompt (t)
1585 char *t;
1586{
1587 char *oldp, *oldl, *oldlprefix;
1588 int oldlen, oldlast, oldplen;
1589
1590 /* Geez, I should make this a struct. */
1591 oldp = rl_display_prompt;
1592 oldl = local_prompt;
1593 oldlprefix = local_prompt_prefix;
1594 oldlen = visible_length;
1595 oldplen = prefix_length;
1596 oldlast = last_invisible;
1597
1598 rl_display_prompt = t;
1599 local_prompt = expand_prompt (t, &visible_length, &last_invisible);
1600 local_prompt_prefix = (char *)NULL;
1601 rl_forced_update_display ();
1602
1603 rl_display_prompt = oldp;
1604 local_prompt = oldl;
1605 local_prompt_prefix = oldlprefix;
1606 visible_length = oldlen;
1607 prefix_length = oldplen;
1608 last_invisible = oldlast;
1609}
1610
|
1511/* Redisplay the current line after a SIGWINCH is received. */
1512void
1513_rl_redisplay_after_sigwinch ()
1514{
| 1611/* Redisplay the current line after a SIGWINCH is received. */
1612void
1613_rl_redisplay_after_sigwinch ()
1614{
|
1515 char *t, *oldp, *oldl, *oldlprefix;
| 1615 char *t;
|
1516
1517 /* Clear the current line and put the cursor at column 0. Make sure
1518 the right thing happens if we have wrapped to a new screen line. */
1519 if (term_cr)
1520 {
| 1616
1617 /* Clear the current line and put the cursor at column 0. Make sure
1618 the right thing happens if we have wrapped to a new screen line. */
1619 if (term_cr)
1620 {
|
| 1621#if defined (__MSDOS__)
1622 putc ('\r', rl_outstream);
1623#else
|
1521 tputs (term_cr, 1, _rl_output_character_function);
| 1624 tputs (term_cr, 1, _rl_output_character_function);
|
| 1625#endif
|
1522 _rl_last_c_pos = 0;
| 1626 _rl_last_c_pos = 0;
|
| 1627#if defined (__MSDOS__)
1628 space_to_eol (screenwidth);
1629 putc ('\r', rl_outstream);
1630#else
|
1523 if (term_clreol)
1524 tputs (term_clreol, 1, _rl_output_character_function);
1525 else
1526 {
1527 space_to_eol (screenwidth);
1528 tputs (term_cr, 1, _rl_output_character_function);
1529 }
| 1631 if (term_clreol)
1632 tputs (term_clreol, 1, _rl_output_character_function);
1633 else
1634 {
1635 space_to_eol (screenwidth);
1636 tputs (term_cr, 1, _rl_output_character_function);
1637 }
|
| 1638#endif
|
1530 if (_rl_last_v_pos > 0)
1531 _rl_move_vert (0);
1532 }
1533 else
1534 crlf ();
1535
1536 /* Redraw only the last line of a multi-line prompt. */
1537 t = strrchr (rl_display_prompt, '\n');
1538 if (t)
| 1639 if (_rl_last_v_pos > 0)
1640 _rl_move_vert (0);
1641 }
1642 else
1643 crlf ();
1644
1645 /* Redraw only the last line of a multi-line prompt. */
1646 t = strrchr (rl_display_prompt, '\n');
1647 if (t)
|
1539 {
1540 oldp = rl_display_prompt;
1541 oldl = local_prompt;
1542 oldlprefix = local_prompt_prefix;
1543 rl_display_prompt = ++t;
1544 local_prompt = local_prompt_prefix = (char *)NULL;
1545 rl_forced_update_display ();
1546 rl_display_prompt = oldp;
1547 local_prompt = oldl;
1548 local_prompt_prefix = oldlprefix;
1549 }
| 1648 redraw_prompt (++t);
|
1550 else
1551 rl_forced_update_display ();
1552}
1553
1554void
1555_rl_clean_up_for_exit ()
1556{
1557 if (readline_echoing_p)
1558 {
1559 _rl_move_vert (_rl_vis_botlin);
1560 _rl_vis_botlin = 0;
1561 fflush (rl_outstream);
1562 rl_restart_output (1, 0);
1563 }
1564}
1565
1566void
1567_rl_erase_entire_line ()
1568{
1569 cr ();
1570 _rl_clear_to_eol (0);
1571 cr ();
1572 fflush (rl_outstream);
1573}
| 1649 else
1650 rl_forced_update_display ();
1651}
1652
1653void
1654_rl_clean_up_for_exit ()
1655{
1656 if (readline_echoing_p)
1657 {
1658 _rl_move_vert (_rl_vis_botlin);
1659 _rl_vis_botlin = 0;
1660 fflush (rl_outstream);
1661 rl_restart_output (1, 0);
1662 }
1663}
1664
1665void
1666_rl_erase_entire_line ()
1667{
1668 cr ();
1669 _rl_clear_to_eol (0);
1670 cr ();
1671 fflush (rl_outstream);
1672}
|
| 1673
1674/* return the `current display line' of the cursor -- the number of lines to
1675 move up to get to the first screen line of the current readline line. */
1676int
1677_rl_current_display_line ()
1678{
1679 int ret, nleft;
1680
1681 /* Find out whether or not there might be invisible characters in the
1682 editing buffer. */
1683 if (rl_display_prompt == rl_prompt)
1684 nleft = _rl_last_c_pos - screenwidth - rl_visible_prompt_length;
1685 else
1686 nleft = _rl_last_c_pos - screenwidth;
1687
1688 if (nleft > 0)
1689 ret = 1 + nleft / screenwidth;
1690 else
1691 ret = 0;
1692
1693 return ret;
1694}
|
| |