pic.h revision 104862 
1// -*- C++ -*-
2/* Copyright (C) 1989, 1990, 1991, 1992, 2000, 2001
3   Free Software Foundation, Inc.
4     Written by James Clark (jjc@jclark.com)
5
6This file is part of groff.
7
8groff is free software; you can redistribute it and/or modify it under
9the terms of the GNU General Public License as published by the Free
10Software Foundation; either version 2, or (at your option) any later
11version.
12
13groff is distributed in the hope that it will be useful, but WITHOUT ANY
14WARRANTY; without even the implied warranty of MERCHANTABILITY or
15FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
16for more details.
17
18You should have received a copy of the GNU General Public License along
19with groff; see the file COPYING.  If not, write to the Free Software
20Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21
22#include "lib.h"
23
24#include <math.h>
25#include <stdlib.h>
26#include <errno.h>
27
28#ifdef NEED_DECLARATION_HYPOT
29extern "C" {
30  double hypot(double, double);
31}
32#endif /* NEED_DECLARATION_HYPOT */
33
34#include "assert.h"
35#include "cset.h"
36#include "stringclass.h"
37#include "errarg.h"
38#include "error.h"
39#include "position.h"
40#include "text.h"
41#include "output.h"
42
43#ifndef M_SQRT2
44#define M_SQRT2	1.41421356237309504880
45#endif
46
47#ifndef M_PI
48#define M_PI 3.14159265358979323846
49#endif
50
51class input {
52  input *next;
53public:
54  input();
55  virtual ~input();
56  virtual int get() = 0;
57  virtual int peek() = 0;
58  virtual int get_location(const char **, int *);
59  friend class input_stack;
60  friend class copy_rest_thru_input;
61};
62
63class file_input : public input {
64  FILE *fp;
65  const char *filename;
66  int lineno;
67  string line;
68  const char *ptr;
69  int read_line();
70public:
71  file_input(FILE *, const char *);
72  ~file_input();
73  int get();
74  int peek();
75  int get_location(const char **, int *);
76};
77
78void lex_init(input *);
79int get_location(char **, int *);
80
81void do_copy(const char *file);
82void parse_init();
83void parse_cleanup();
84
85void lex_error(const char *message,
86	       const errarg &arg1 = empty_errarg,
87	       const errarg &arg2 = empty_errarg,
88	       const errarg &arg3 = empty_errarg);
89
90void lex_warning(const char *message,
91		 const errarg &arg1 = empty_errarg,
92		 const errarg &arg2 = empty_errarg,
93		 const errarg &arg3 = empty_errarg);
94
95void lex_cleanup();
96
97extern int flyback_flag;
98extern int command_char;
99// zero_length_line_flag is non-zero if zero-length lines are drawn
100// as dots by the output device
101extern int zero_length_line_flag;
102extern int driver_extension_flag;
103extern int compatible_flag;
104extern int safer_flag;
105