| 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
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10 as published by the Free Software Foundation; either version 1, or
| 11 as published by the Free Software Foundation; either version 2, or
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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,
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21 675 Mass Ave, Cambridge, MA 02139, USA. */
| 22 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
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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
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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
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| 55#include "rlprivate.h" 56#include "xmalloc.h" 57
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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
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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;
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79#endif
| 64#endif
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80extern int _rl_backspace ();
| |
81
| 65
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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));
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87
| 71
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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;
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| 73static int inv_lbsize, vis_lbsize;
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99
| 74
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100extern char *xmalloc (), *xrealloc (); 101
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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
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193 index of the last invisible character in ther eturned string. */
| 166 index of the last invisible character in the returned string. */
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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
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| 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
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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
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| 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
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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 {
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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);
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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++;
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| 414 pmtlen = prompt_this_line - rl_display_prompt; /* temp var */
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398 if (forced_display) 399 {
| 415 if (forced_display) 416 {
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400 _rl_output_some_chars (rl_display_prompt, prompt_this_line - rl_display_prompt);
| 417 _rl_output_some_chars (rl_display_prompt, pmtlen);
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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. */
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403 if (prompt_this_line[-2] != '\r')
| 420 if (pmtlen < 2 || prompt_this_line[-2] != '\r')
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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
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| 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
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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 { \
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| 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;
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| 540 CHECK_INV_LBREAKS ();
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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 */
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| 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 {
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| 946#if defined (__MSDOS__) 947 putc ('\r', rl_outstream); 948#else
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902 tputs (term_cr, 1, _rl_output_character_function);
| 949 tputs (term_cr, 1, _rl_output_character_function);
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| 950#endif
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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
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| 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
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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)
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1089 extern char *term_forward_char; 1090
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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
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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
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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);
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| 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}
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| 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}
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