output.c (7e1b7636c894be9d1130c284089ce1ea0786ecec) output.c (b2ea244070ff84eab79e04befb7aa30c982fc84d)
1/*
2 * Copyright (C) 1984-2017 Mark Nudelman
3 *
4 * You may distribute under the terms of either the GNU General Public
5 * License or the Less License, as specified in the README file.
6 *
7 * For more information, see the README file.
8 */
9
10
11/*
12 * High level routines dealing with the output to the screen.
13 */
14
15#include "less.h"
16#if MSDOS_COMPILER==WIN32C
17#include "windows.h"
1/*
2 * Copyright (C) 1984-2017 Mark Nudelman
3 *
4 * You may distribute under the terms of either the GNU General Public
5 * License or the Less License, as specified in the README file.
6 *
7 * For more information, see the README file.
8 */
9
10
11/*
12 * High level routines dealing with the output to the screen.
13 */
14
15#include "less.h"
16#if MSDOS_COMPILER==WIN32C
17#include "windows.h"
18#ifndef COMMON_LVB_UNDERSCORE
19#define COMMON_LVB_UNDERSCORE 0x8000
18#endif
20#endif
21#endif
19
20public int errmsgs; /* Count of messages displayed by error() */
21public int need_clr;
22public int final_attr;
23public int at_prompt;
24
25extern int sigs;
26extern int sc_width;

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33#if MSDOS_COMPILER==WIN32C || MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
34extern int ctldisp;
35extern int nm_fg_color, nm_bg_color;
36extern int bo_fg_color, bo_bg_color;
37extern int ul_fg_color, ul_bg_color;
38extern int so_fg_color, so_bg_color;
39extern int bl_fg_color, bl_bg_color;
40extern int sgr_mode;
22
23public int errmsgs; /* Count of messages displayed by error() */
24public int need_clr;
25public int final_attr;
26public int at_prompt;
27
28extern int sigs;
29extern int sc_width;

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36#if MSDOS_COMPILER==WIN32C || MSDOS_COMPILER==BORLANDC || MSDOS_COMPILER==DJGPPC
37extern int ctldisp;
38extern int nm_fg_color, nm_bg_color;
39extern int bo_fg_color, bo_bg_color;
40extern int ul_fg_color, ul_bg_color;
41extern int so_fg_color, so_bg_color;
42extern int bl_fg_color, bl_bg_color;
43extern int sgr_mode;
44#if MSDOS_COMPILER==WIN32C
45extern int have_ul;
41#endif
46#endif
47#endif
42
43/*
44 * Display the line which is in the line buffer.
45 */
46 public void
47put_line()
48{
49 int c;

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122 {
123 /*
124 * Look for SGR escape sequences, and convert them
125 * to color commands. Replace bold, underline,
126 * and italic escapes into colors specified via
127 * the -D command-line option.
128 */
129 char *anchor, *p, *p_next;
48
49/*
50 * Display the line which is in the line buffer.
51 */
52 public void
53put_line()
54{
55 int c;

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128 {
129 /*
130 * Look for SGR escape sequences, and convert them
131 * to color commands. Replace bold, underline,
132 * and italic escapes into colors specified via
133 * the -D command-line option.
134 */
135 char *anchor, *p, *p_next;
130 static unsigned char fg, fgi, bg, bgi;
131 static unsigned char at;
132 unsigned char f, b;
136 static int fg, fgi, bg, bgi;
137 static int at;
138 int f, b;
133#if MSDOS_COMPILER==WIN32C
134 /* Screen colors used by 3x and 4x SGR commands. */
135 static unsigned char screen_color[] = {
136 0, /* BLACK */
137 FOREGROUND_RED,
138 FOREGROUND_GREEN,
139 FOREGROUND_RED|FOREGROUND_GREEN,
140 FOREGROUND_BLUE,

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254 case 1: /* bold on */
255 fgi = 8;
256 at |= 1;
257 break;
258 case 3: /* italic on */
259 case 7: /* inverse on */
260 at |= 2;
261 break;
139#if MSDOS_COMPILER==WIN32C
140 /* Screen colors used by 3x and 4x SGR commands. */
141 static unsigned char screen_color[] = {
142 0, /* BLACK */
143 FOREGROUND_RED,
144 FOREGROUND_GREEN,
145 FOREGROUND_RED|FOREGROUND_GREEN,
146 FOREGROUND_BLUE,

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260 case 1: /* bold on */
261 fgi = 8;
262 at |= 1;
263 break;
264 case 3: /* italic on */
265 case 7: /* inverse on */
266 at |= 2;
267 break;
262 case 4: /* underline on */
263 bgi = 8;
268 case 4: /* underline on */
269#if MSDOS_COMPILER==WIN32C
270 if (have_ul)
271 bgi = COMMON_LVB_UNDERSCORE >> 4;
272 else
273#endif
274 bgi = 8;
264 at |= 4;
265 break;
266 case 5: /* slow blink on */
267 case 6: /* fast blink on */
268 bgi = 8;
269 at |= 8;
270 break;
271 case 8: /* concealed on */

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351 {
352 f = nm_fg_color;
353 b = nm_bg_color;
354 }
355 }
356 if (at & 16)
357 f = b ^ 8;
358 f &= 0xf;
275 at |= 4;
276 break;
277 case 5: /* slow blink on */
278 case 6: /* fast blink on */
279 bgi = 8;
280 at |= 8;
281 break;
282 case 8: /* concealed on */

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362 {
363 f = nm_fg_color;
364 b = nm_bg_color;
365 }
366 }
367 if (at & 16)
368 f = b ^ 8;
369 f &= 0xf;
359 b &= 0xf;
370#if MSDOS_COMPILER==WIN32C
371 b &= 0xf | (COMMON_LVB_UNDERSCORE >> 4);
372#else
373 b &= 0xf;
374#endif
360 WIN32setcolors(f, b);
361 p_next = anchor = p + 1;
362 } else
363 p_next++;
364 }
365
366 /* Output what's left in the buffer. */
367 WIN32textout(anchor, ob - anchor);

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531 case 'd':
532 col += iprint_int(parg->p_int);
533 parg++;
534 break;
535 case 'n':
536 col += iprint_linenum(parg->p_linenum);
537 parg++;
538 break;
375 WIN32setcolors(f, b);
376 p_next = anchor = p + 1;
377 } else
378 p_next++;
379 }
380
381 /* Output what's left in the buffer. */
382 WIN32textout(anchor, ob - anchor);

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546 case 'd':
547 col += iprint_int(parg->p_int);
548 parg++;
549 break;
550 case 'n':
551 col += iprint_linenum(parg->p_linenum);
552 parg++;
553 break;
554 case '%':
555 putchr('%');
556 break;
539 }
540 }
541 }
542 return (col);
543}
544
545/*
546 * Get a RETURN.

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595 }
596
597 putstr(return_to_continue);
598 at_exit();
599 col += sizeof(return_to_continue) + so_e_width;
600
601 get_return();
602 lower_left();
557 }
558 }
559 }
560 return (col);
561}
562
563/*
564 * Get a RETURN.

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613 }
614
615 putstr(return_to_continue);
616 at_exit();
617 col += sizeof(return_to_continue) + so_e_width;
618
619 get_return();
620 lower_left();
603 clear_eol();
621 clear_eol();
604
605 if (col >= sc_width)
606 /*
607 * Printing the message has probably scrolled the screen.
608 * {{ Unless the terminal doesn't have auto margins,
609 * in which case we just hammered on the right margin. }}
610 */
611 screen_trashed = 1;

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623 if (col >= sc_width)
624 /*
625 * Printing the message has probably scrolled the screen.
626 * {{ Unless the terminal doesn't have auto margins,
627 * in which case we just hammered on the right margin. }}
628 */
629 screen_trashed = 1;

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