103 lines
2.5 KiB
C
103 lines
2.5 KiB
C
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// -*- C++ -*-
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/* Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc.
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Written by James Clark (jjc@jclark.com)
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This file is part of groff.
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groff is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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groff is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License along
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with groff; see the file COPYING. If not, write to the Free Software
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Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include <stdio.h>
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#include <string.h>
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#include <math.h>
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#include <stdlib.h>
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#include <errno.h>
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extern "C" {
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double hypot(double, double);
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}
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#include "assert.h"
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#include "cset.h"
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#include "lib.h"
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#include "stringclass.h"
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#include "errarg.h"
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#include "error.h"
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#include "position.h"
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#include "text.h"
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#include "output.h"
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#ifndef M_SQRT2
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#define M_SQRT2 1.41421356237309504880
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#endif
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#ifndef M_PI
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#define M_PI 3.14159265358979323846
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#endif
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class input {
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input *next;
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public:
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input();
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virtual ~input();
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virtual int get() = 0;
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virtual int peek() = 0;
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virtual int get_location(const char **, int *);
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friend class input_stack;
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friend class copy_rest_thru_input;
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};
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class file_input : public input {
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FILE *fp;
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const char *filename;
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int lineno;
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string line;
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const char *ptr;
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int read_line();
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public:
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file_input(FILE *, const char *);
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~file_input();
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int get();
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int peek();
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int get_location(const char **, int *);
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};
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void lex_init(input *);
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int get_location(char **, int *);
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void do_copy(const char *file);
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void parse_init();
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void parse_cleanup();
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void lex_error(const char *message,
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const errarg &arg1 = empty_errarg,
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const errarg &arg2 = empty_errarg,
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const errarg &arg3 = empty_errarg);
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void lex_warning(const char *message,
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const errarg &arg1 = empty_errarg,
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const errarg &arg2 = empty_errarg,
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const errarg &arg3 = empty_errarg);
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void lex_cleanup();
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extern int flyback_flag;
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extern int command_char;
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// zero_length_line_flag is non-zero if zero-length lines are drawn
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// as dots by the output device
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extern int zero_length_line_flag;
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extern int driver_extension_flag;
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extern int compatible_flag;
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extern int safer_flag;
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