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/*
* Copyright (c) 1984,1985,1989,1994,1995 Mark Nudelman
* 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 in the documentation and/or other materials provided with
* the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
/*
* Standard include file for "less".
*/
/*
* Include the file of compile-time options.
* The <> make cc search for it in -I., not srcdir.
*/
#include <defines.h>
#ifdef _SEQUENT_
/*
* Kludge for Sequent Dynix systems that have sigsetmask, but
* it's not compatible with the way less calls it.
* {{ Do other systems need this? }}
*/
#undef HAVE_SIGSETMASK
#endif
/*
* Language details.
*/
#if HAVE_VOID
#define VOID_POINTER void *
#else
#define VOID_POINTER char *
#define void int
#endif
#define public /* PUBLIC FUNCTION */
/* Library function declarations */
#if HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#if HAVE_STDIO_H
#include <stdio.h>
#endif
#if HAVE_FCNTL_H
#include <fcntl.h>
#endif
#if HAVE_UNISTD_H
#include <unistd.h>
#endif
#if HAVE_CTYPE_H
#include <ctype.h>
#endif
#if STDC_HEADERS
#include <stdlib.h>
#include <string.h>
#endif
#if !STDC_HEADERS
char *getenv();
off_t lseek();
VOID_POINTER calloc();
void free();
#endif
#if !HAVE_UPPER_LOWER
#define isupper(c) ((c) >= 'A' && (c) <= 'Z')
#define islower(c) ((c) >= 'a' && (c) <= 'z')
#define toupper(c) ((c) - 'a' + 'A')
#define tolower(c) ((c) - 'A' + 'a')
#endif
#ifndef NULL
#define NULL 0
#endif
#ifndef TRUE
#define TRUE 1
#endif
#ifndef FALSE
#define FALSE 0
#endif
#define OPT_OFF 0
#define OPT_ON 1
#define OPT_ONPLUS 2
#ifndef HAVE_MEMCPY
#ifndef memcpy
#define memcpy(to,from,len) bcopy((from),(to),(len))
#endif
#endif
#define BAD_LSEEK ((off_t)-1)
/*
* Special types and constants.
*/
typedef off_t POSITION;
/*
* {{ Warning: if POSITION is changed to other than "long",
* you may have to change some of the printfs which use "%ld"
* to print a variable of type POSITION. }}
*/
#define NULL_POSITION ((POSITION)(-1))
/*
* Flags for open()
*/
#if MSOFTC || OS2
#define OPEN_READ (O_RDONLY|O_BINARY)
#else
#define OPEN_READ (0)
#endif
#if MSOFTC || OS2
#define OPEN_APPEND (O_APPEND|O_WRONLY)
#else
#define OPEN_APPEND (1)
#endif
#if MSOFTC || OS2
#define OPEN_TTYIN() open("CON", O_BINARY|O_RDONLY)
#else
#define OPEN_TTYIN() open("/dev/tty", 0)
#endif
/*
* An IFILE represents an input file.
*/
#define IFILE VOID_POINTER
#define NULL_IFILE ((IFILE)NULL)
/*
* The structure used to represent a "screen position".
* This consists of a file position, and a screen line number.
* The meaning is that the line starting at the given file
* position is displayed on the ln-th line of the screen.
* (Screen lines before ln are empty.)
*/
struct scrpos
{
POSITION pos;
int ln;
};
typedef union parg
{
char *p_string;
int p_int;
} PARG;
#define NULL_PARG ((PARG *)NULL)
struct textlist
{
char *string;
char *endstring;
};
#define EOI (-1)
#define READ_INTR (-2)
/* How quiet should we be? */
#define NOT_QUIET 0 /* Ring bell at eof and for errors */
#define LITTLE_QUIET 1 /* Ring bell only for errors */
#define VERY_QUIET 2 /* Never ring bell */
/* How should we prompt? */
#define PR_SHORT 0 /* Prompt with colon */
#define PR_MEDIUM 1 /* Prompt with message */
#define PR_LONG 2 /* Prompt with longer message */
/* How should we handle backspaces? */
#define BS_SPECIAL 0 /* Do special things for underlining and bold */
#define BS_NORMAL 1 /* \b treated as normal char; actually output */
#define BS_CONTROL 2 /* \b treated as control char; prints as ^H */
/* How should we search? */
#define SRCH_FORW 0001 /* Search forward from current position */
#define SRCH_BACK 0002 /* Search backward from current position */
#define SRCH_FIND_ALL 0010 /* Find and highlight all matches */
#define SRCH_NOMATCH 0100 /* Search for non-matching lines */
#define SRCH_PAST_EOF 0200 /* Search past end-of-file, into next file */
#define SRCH_FIRST_FILE 0400 /* Search starting at the first file */
#define SRCH_REVERSE(t) (((t) & SRCH_FORW) ? \
(((t) & ~SRCH_FORW) | SRCH_BACK) : \
(((t) & ~SRCH_BACK) | SRCH_FORW))
/* */
#define NO_MCA 0
#define MCA_DONE 1
#define MCA_MORE 2
#define CC_OK 0 /* Char was accepted & processed */
#define CC_QUIT 1 /* Char was a request to abort current cmd */
#define CC_ERROR 2 /* Char could not be accepted due to error */
#define CC_PASS 3 /* Char was rejected (internal) */
/* Special chars used to tell put_line() to do something special */
#define AT_NORMAL (0)
#define AT_UNDERLINE (1)
#define AT_BOLD (2)
#define AT_BLINK (3)
#define AT_INVIS (4)
#define AT_STANDOUT (5)
#define CONTROL(c) ((c)&037)
#define ESC CONTROL('[')
#define SIGNAL(sig,func) signal(sig,func)
#define S_INTERRUPT 01
#define S_STOP 02
#define S_WINCH 04
#define ABORT_SIGS() (sigs & (S_INTERRUPT|S_STOP))
#define QUIT_OK 0
#define QUIT_ERROR 1
#define QUIT_SAVED_STATUS (-1)
/* filestate flags */
#define CH_CANSEEK 001
#define CH_KEEPOPEN 002
#define CH_POPENED 004
#define ch_zero() ((POSITION)0)
#include "funcs.h"
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