1 // -*- C++ -*-
2 /* Copyright (C) 1989, 1990, 1991, 1992, 2001, 2002
3 Free Software Foundation, Inc.
4 Written by James Clark (jjc@jclark.com)
5
6 This file is part of groff.
7
8 groff is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 2, or (at your option) any later
11 version.
12
13 groff is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
17
18 You should have received a copy of the GNU General Public License along
19 with groff; see the file COPYING. If not, write to the Free Software
20 Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
21
22 class macro;
23
24 class charinfo {
25 static int next_index;
26 charinfo *translation;
27 int index;
28 int number;
29 macro *mac;
30 unsigned char special_translation;
31 unsigned char hyphenation_code;
32 unsigned char flags;
33 unsigned char ascii_code;
34 unsigned char asciify_code;
35 char not_found;
36 char transparent_translate; // non-zero means translation applies
37 // to transparent throughput
38 char translate_input; // non-zero means that asciify_code is
39 // active for .asciify (set by .trin)
40 char_mode mode;
41 public:
42 enum {
43 ENDS_SENTENCE = 1,
44 BREAK_BEFORE = 2,
45 BREAK_AFTER = 4,
46 OVERLAPS_HORIZONTALLY = 8,
47 OVERLAPS_VERTICALLY = 16,
48 TRANSPARENT = 32,
49 NUMBERED = 64
50 };
51 enum {
52 TRANSLATE_NONE,
53 TRANSLATE_SPACE,
54 TRANSLATE_DUMMY,
55 TRANSLATE_STRETCHABLE_SPACE,
56 TRANSLATE_HYPHEN_INDICATOR
57 };
58 symbol nm;
59 charinfo(symbol s);
60 int get_index();
61 int ends_sentence();
62 int overlaps_vertically();
63 int overlaps_horizontally();
64 int can_break_before();
65 int can_break_after();
66 int transparent();
67 unsigned char get_hyphenation_code();
68 unsigned char get_ascii_code();
69 unsigned char get_asciify_code();
70 void set_hyphenation_code(unsigned char);
71 void set_ascii_code(unsigned char);
72 void set_asciify_code(unsigned char);
73 void set_translation_input();
74 int get_translation_input();
75 charinfo *get_translation(int = 0);
76 void set_translation(charinfo *, int, int);
77 void set_flags(unsigned char);
78 void set_special_translation(int, int);
79 int get_special_translation(int = 0);
80 macro *set_macro(macro *);
81 macro *setx_macro(macro *, char_mode);
82 macro *get_macro();
83 int first_time_not_found();
84 void set_number(int);
85 int get_number();
86 int numbered();
87 int is_normal();
88 int is_fallback();
89 int is_special();
90 symbol *get_symbol();
91 };
92
93 charinfo *get_charinfo(symbol);
94 extern charinfo *charset_table[];
95 charinfo *get_charinfo_by_number(int);
96
overlaps_horizontally()97 inline int charinfo::overlaps_horizontally()
98 {
99 return flags & OVERLAPS_HORIZONTALLY;
100 }
101
overlaps_vertically()102 inline int charinfo::overlaps_vertically()
103 {
104 return flags & OVERLAPS_VERTICALLY;
105 }
106
can_break_before()107 inline int charinfo::can_break_before()
108 {
109 return flags & BREAK_BEFORE;
110 }
111
can_break_after()112 inline int charinfo::can_break_after()
113 {
114 return flags & BREAK_AFTER;
115 }
116
ends_sentence()117 inline int charinfo::ends_sentence()
118 {
119 return flags & ENDS_SENTENCE;
120 }
121
transparent()122 inline int charinfo::transparent()
123 {
124 return flags & TRANSPARENT;
125 }
126
numbered()127 inline int charinfo::numbered()
128 {
129 return flags & NUMBERED;
130 }
131
is_normal()132 inline int charinfo::is_normal()
133 {
134 return mode == CHAR_NORMAL;
135 }
136
is_fallback()137 inline int charinfo::is_fallback()
138 {
139 return mode == CHAR_FALLBACK;
140 }
141
is_special()142 inline int charinfo::is_special()
143 {
144 return mode == CHAR_SPECIAL;
145 }
146
get_translation(int transparent_throughput)147 inline charinfo *charinfo::get_translation(int transparent_throughput)
148 {
149 return (transparent_throughput && !transparent_translate
150 ? 0
151 : translation);
152 }
153
get_hyphenation_code()154 inline unsigned char charinfo::get_hyphenation_code()
155 {
156 return hyphenation_code;
157 }
158
get_ascii_code()159 inline unsigned char charinfo::get_ascii_code()
160 {
161 return ascii_code;
162 }
163
get_asciify_code()164 inline unsigned char charinfo::get_asciify_code()
165 {
166 return (translate_input ? asciify_code : 0);
167 }
168
set_flags(unsigned char c)169 inline void charinfo::set_flags(unsigned char c)
170 {
171 flags = c;
172 }
173
get_index()174 inline int charinfo::get_index()
175 {
176 return index;
177 }
178
set_translation_input()179 inline void charinfo::set_translation_input()
180 {
181 translate_input = 1;
182 }
183
get_translation_input()184 inline int charinfo::get_translation_input()
185 {
186 return translate_input;
187 }
188
get_special_translation(int transparent_throughput)189 inline int charinfo::get_special_translation(int transparent_throughput)
190 {
191 return (transparent_throughput && !transparent_translate
192 ? int(TRANSLATE_NONE)
193 : special_translation);
194 }
195
get_macro()196 inline macro *charinfo::get_macro()
197 {
198 return mac;
199 }
200
first_time_not_found()201 inline int charinfo::first_time_not_found()
202 {
203 if (not_found)
204 return 0;
205 else {
206 not_found = 1;
207 return 1;
208 }
209 }
210
get_symbol()211 inline symbol *charinfo::get_symbol()
212 {
213 return( &nm );
214 }
215