diff options
Diffstat (limited to 'usr.bin/more/output.c')
| -rw-r--r-- | usr.bin/more/output.c | 320 |
1 files changed, 0 insertions, 320 deletions
diff --git a/usr.bin/more/output.c b/usr.bin/more/output.c deleted file mode 100644 index cf07f09..0000000 --- a/usr.bin/more/output.c +++ /dev/null @@ -1,320 +0,0 @@ -/* - * Copyright (c) 1988 Mark Nudleman - * Copyright (c) 1988, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#ifndef lint -static char sccsid[] = "@(#)output.c 8.1 (Berkeley) 6/6/93"; -#endif /* not lint */ - -#ifndef lint -static const char rcsid[] = - "$FreeBSD$"; -#endif /* not lint */ - -/* - * High level routines dealing with the output to the screen. - */ - -#include <ctype.h> -#include <stdio.h> -#include <string.h> - -#include "less.h" - -extern int bs_mode; -extern int sigs; -extern int sc_width, sc_height; -extern int ul_width, ue_width; -extern int so_width, se_width; -extern int bo_width, be_width; -extern int tabstop; -extern int screen_trashed; -extern char *line; -extern int horiz_off; -extern int mode_flags; - -static int last_pos_highlighted = 0; - -/* static markup() - * - * Output correct markup char; return number of columns eaten-up. - * Called by put_line() just before doing any actual output. - */ -#define ENTER 1 -#define ACQUIESCE 0 /* XXX Check actual def'n... */ -#define EXIT -1 - -static -markup(ent_ul, ent_bo) - int *ent_ul, *ent_bo; -{ - int retr; - - retr = 0; - switch (*ent_ul) { - case ENTER: - ul_enter(); - retr += ul_width; - break; - case EXIT: - ul_exit(); - retr += ue_width; - break; - } - switch (*ent_bo) { - case ENTER: - bo_enter(); - retr += bo_width; - break; - case EXIT: - bo_exit(); - retr += be_width; - break; - } - *ent_ul = *ent_bo = ACQUIESCE; - return retr; -} - -/* put_line() - * - * Display the line which is in the line buffer. The number of output - * characters in the line buffer cannot exceed screen columns available. - * Output characters in the line buffer that precede horiz_off are skipped. - * The caller may depend on this behaviour to ensure that the number of output - * characters in the line buffer does not exceed the screen columns - * available. - * - * This routine will get confused if the line buffer has non-sensical - * UL_CHAR, UE_CHAR, BO_CHAR, BE_CHAR markups. - */ -#define MAYPUTCHR(char) \ - if (column >= horiz_off) { \ - column += markup(&ent_ul, &ent_bo); \ - putchr(char); \ - } - -put_line() -{ - register char *p; - register int c; - register int column; - extern int auto_wrap, ignaw; - int ent_ul, ent_bo; /* enter or exit ul|bo mode for next char */ - - if (sigs) - { - /* - * Don't output if a signal is pending. - */ - screen_trashed = 1; - return; - } - - if (line == NULL) - line = ""; - - if (last_pos_highlighted) - { - clear_eol(); - last_pos_highlighted = 0; - } - column = 0; - ent_ul = ent_bo = ACQUIESCE; - for (p = line; *p != '\0'; p++) - { - /* - * XXX line.c needs to be rewritten to store markup - * information as metadata associated with each character. - * This will make several things much nicer, fixing problems, - * etc. Until then, this kludge will hold the fort well - * enough. - */ - switch ((char)(c = (unsigned char)*p)) - { - case UL_CHAR: - ent_ul = ENTER; - break; - case UE_CHAR: - if (ent_ul != ENTER) - ent_ul = EXIT; - else - ent_ul = ACQUIESCE; - break; - case BO_CHAR: - ent_bo = ENTER; - break; - case BE_CHAR: - if (ent_bo != ENTER) - ent_bo = EXIT; - else - ent_bo = ACQUIESCE; - break; - case '\t': - do - { - MAYPUTCHR(' '); - column++; - } while ((column % tabstop) != 0); - break; - case '\b': - /* - * column must be at least one greater than - * horiz_off (ie. we must be in the second or - * beyond screen column) or we'll just end-up - * backspacing up to the previous line. - */ - if (column > horiz_off) { - column += markup(&ent_ul, &ent_bo); - putbs(); - column--; - } - break; - case '\r': - /* treat \r\n sequences like \n if -u flag not set. */ - if (bs_mode || p[1] != '\0') - { - /* -u was set, or this CR is not a CRLF, so - * treat this CR like any other control_char */ - MAYPUTCHR('^'); - column++; - MAYPUTCHR(CARAT_CHAR(c)); - column++; - } - break; - default: - if (c == 0200 || CONTROL_CHAR(c)) - { - c &= ~0200; - MAYPUTCHR('^'); - column++; - MAYPUTCHR(CARAT_CHAR(c)); - column++; - } else - { - MAYPUTCHR(c); - column++; - } - } - if (column == sc_width + horiz_off && mode_flags) - last_pos_highlighted = 1; - } - column += markup(&ent_ul, &ent_bo); - if (column < sc_width + horiz_off || !auto_wrap || ignaw) - putchr('\n'); -} - -static char obuf[2048]; /* just large enough for a full 25*80 screen */ -static char *ob = obuf; - -/* - * Flush buffered output. - */ -flush() -{ - register int n; - - n = ob - obuf; - if (n == 0) - return; - if (write(1, obuf, n) != n) - screen_trashed = 1; - ob = obuf; -} - -/* - * Purge any pending output. - */ -purge() -{ - - ob = obuf; -} - -/* - * Output a character. - */ -putchr(c) - int c; -{ - if (ob >= &obuf[sizeof(obuf)]) - flush(); - *ob++ = c; -} - -/* - * Output a string. - */ -putstr(s) - register char *s; -{ - while (*s != '\0') - putchr(*s++); -} - -/* - * Output a string, expanding control characters into printable sequences. - * Returns the number of characters printed. - */ -int -putxstr(s) - char *s; -{ - int c; - int retr = 0; - - for (; c = *s; s++) { - if (CONTROL_CHAR(c)) { - putchr('^'); - retr++; - c &= ~0200; - c = CARAT_CHAR(c); - } - putchr(c); - } - - return(retr); -} - -static char intr_to_abort[] = "... (interrupt to abort)"; - -ierror(s) - char *s; -{ - lower_left(); - clear_eol(); - so_enter(); - putstr(s); - putstr(intr_to_abort); - so_exit(); - flush(); -} |
