gnu/dist/groff/src/preproc/pic/pic.h

   1 /*      $NetBSD$        */
   2
   3 // -*- C++ -*-
   4 /* Copyright (C) 1989, 1990, 1991, 1992, 2000, 2001, 2003, 2005
   5    Free Software Foundation, Inc.
   6      Written by James Clark (jjc@jclark.com)
   7
   8 This file is part of groff.
   9
  10 groff is free software; you can redistribute it and/or modify it under
  11 the terms of the GNU General Public License as published by the Free
  12 Software Foundation; either version 2, or (at your option) any later
  13 version.
  14
  15 groff is distributed in the hope that it will be useful, but WITHOUT ANY
  16 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  17 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  18 for more details.
  19
  20 You should have received a copy of the GNU General Public License along
  21 with groff; see the file COPYING.  If not, write to the Free Software
  22 Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
  23
  24 #include "lib.h"
  25
  26 #include <math.h>
  27 #include <stdlib.h>
  28 #include <errno.h>
  29
  30 #ifdef NEED_DECLARATION_RAND
  31 #undef rand
  32 extern "C" {
  33   int rand();
  34 }
  35 #endif /* NEED_DECLARATION_RAND */
  36
  37 #ifdef NEED_DECLARATION_SRAND
  38 #undef srand
  39 extern "C" {
  40 #ifdef RET_TYPE_SRAND_IS_VOID
  41   void srand(unsigned int);
  42 #else
  43   int srand(unsigned int);
  44 #endif
  45 }
  46 #endif /* NEED_DECLARATION_SRAND */
  47
  48 #ifndef HAVE_FMOD
  49 extern "C" {
  50   double fmod(double, double);
  51 }
  52 #endif
  53
  54 #include "assert.h"
  55 #include "cset.h"
  56 #include "stringclass.h"
  57 #include "errarg.h"
  58 #include "error.h"
  59 #include "position.h"
  60 #include "text.h"
  61 #include "output.h"
  62
  63 #ifndef M_SQRT2
  64 #define M_SQRT2 1.41421356237309504880
  65 #endif
  66
  67 #ifndef M_PI
  68 #define M_PI 3.14159265358979323846
  69 #endif
  70
  71 class input {
  72   input *next;
  73 public:
  74   input();
  75   virtual ~input();
  76   virtual int get() = 0;
  77   virtual int peek() = 0;
  78   virtual int get_location(const char **, int *);
  79   friend class input_stack;
  80   friend class copy_rest_thru_input;
  81 };
  82
  83 class file_input : public input {
  84   FILE *fp;
  85   const char *filename;
  86   int lineno;
  87   string line;
  88   const char *ptr;
  89   int read_line();
  90 public:
  91   file_input(FILE *, const char *);
  92   ~file_input();
  93   int get();
  94   int peek();
  95   int get_location(const char **, int *);
  96 };
  97
  98 void lex_init(input *);
  99 int get_location(char **, int *);
 100
 101 void do_copy(const char *file);
 102 void parse_init();
 103 void parse_cleanup();
 104
 105 void lex_error(const char *message,
 106                const errarg &arg1 = empty_errarg,
 107                const errarg &arg2 = empty_errarg,
 108                const errarg &arg3 = empty_errarg);
 109
 110 void lex_warning(const char *message,
 111                  const errarg &arg1 = empty_errarg,
 112                  const errarg &arg2 = empty_errarg,
 113                  const errarg &arg3 = empty_errarg);
 114
 115 void lex_cleanup();
 116
 117 extern int flyback_flag;
 118 extern int command_char;
 119 // zero_length_line_flag is non-zero if zero-length lines are drawn
 120 // as dots by the output device
 121 extern int zero_length_line_flag;
 122 extern int driver_extension_flag;
 123 extern int compatible_flag;
 124 extern int safer_flag;
 125 extern char *graphname;