1 | /* FriBidi |
2 | * fribidi-char-sets.c - character set conversion routines |
3 | * |
4 | * Authors: |
5 | * Behdad Esfahbod, 2001, 2002, 2004 |
6 | * Dov Grobgeld, 1999, 2000 |
7 | * |
8 | * Copyright (C) 2004 Sharif FarsiWeb, Inc |
9 | * Copyright (C) 2001,2002 Behdad Esfahbod |
10 | * Copyright (C) 1999,2000 Dov Grobgeld |
11 | * |
12 | * This library is free software; you can redistribute it and/or |
13 | * modify it under the terms of the GNU Lesser General Public |
14 | * License as published by the Free Software Foundation; either |
15 | * version 2.1 of the License, or (at your option) any later version. |
16 | * |
17 | * This library is distributed in the hope that it will be useful, |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
20 | * Lesser General Public License for more details. |
21 | * |
22 | * You should have received a copy of the GNU Lesser General Public License |
23 | * along with this library, in a file named COPYING; if not, write to the |
24 | * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
25 | * Boston, MA 02110-1301, USA |
26 | * |
27 | * For licensing issues, contact <fribidi.license@gmail.com>. |
28 | */ |
29 | |
30 | #include <common.h> |
31 | |
32 | #include <fribidi-char-sets.h> |
33 | |
34 | #include "fribidi-char-sets-cap-rtl.h" |
35 | #include "fribidi-char-sets-utf8.h" |
36 | #include "fribidi-char-sets-iso8859-6.h" |
37 | #include "fribidi-char-sets-cp1256.h" |
38 | #include "fribidi-char-sets-iso8859-8.h" |
39 | #include "fribidi-char-sets-cp1255.h" |
40 | |
41 | typedef struct |
42 | { |
43 | FriBidiChar ( |
44 | *charset_to_unicode_c |
45 | ) ( |
46 | char ch |
47 | ); |
48 | |
49 | FriBidiStrIndex ( |
50 | *charset_to_unicode |
51 | ) ( |
52 | const char *s, |
53 | FriBidiStrIndex len, |
54 | FriBidiChar *us |
55 | ); |
56 | |
57 | char ( |
58 | *unicode_to_charset_c |
59 | ) ( |
60 | FriBidiChar uch |
61 | ); |
62 | |
63 | FriBidiStrIndex ( |
64 | *unicode_to_charset |
65 | ) ( |
66 | const FriBidiChar *us, |
67 | FriBidiStrIndex len, |
68 | char *s |
69 | ); |
70 | |
71 | const char *name; |
72 | |
73 | const char *title; |
74 | |
75 | const char *( |
76 | *desc |
77 | ) ( |
78 | void |
79 | ); |
80 | } |
81 | FriBidiCharSetHandler; |
82 | |
83 | static FriBidiCharSetHandler char_sets[FRIBIDI_CHAR_SETS_NUM + 1] = { |
84 | {NULL, NULL, NULL, NULL, "N/A" , "Character set not available" , NULL}, |
85 | # define _FRIBIDI_ADD_CHAR_SET_ONE2ONE(CHAR_SET, char_set) \ |
86 | { \ |
87 | fribidi_##char_set##_to_unicode_c, \ |
88 | NULL, \ |
89 | fribidi_unicode_to_##char_set##_c, \ |
90 | NULL, \ |
91 | fribidi_char_set_name_##char_set, \ |
92 | fribidi_char_set_title_##char_set, \ |
93 | fribidi_char_set_desc_##char_set \ |
94 | }, |
95 | # define _FRIBIDI_ADD_CHAR_SET_OTHERS(CHAR_SET, char_set) \ |
96 | { \ |
97 | NULL, \ |
98 | fribidi_##char_set##_to_unicode, \ |
99 | NULL, \ |
100 | fribidi_unicode_to_##char_set, \ |
101 | fribidi_char_set_name_##char_set, \ |
102 | fribidi_char_set_title_##char_set, \ |
103 | fribidi_char_set_desc_##char_set \ |
104 | }, |
105 | # include <fribidi-char-sets-list.h> |
106 | # undef _FRIBIDI_ADD_CHAR_SET_OTHERS |
107 | # undef _FRIBIDI_ADD_CHAR_SET_ONE2ONE |
108 | }; |
109 | |
110 | static char |
111 | fribidi_toupper ( |
112 | /* input */ |
113 | char c |
114 | ) |
115 | { |
116 | return c < 'a' || c > 'z' ? c : c + 'A' - 'a'; |
117 | } |
118 | |
119 | static int |
120 | fribidi_strcasecmp ( |
121 | /* input */ |
122 | const char *s1, |
123 | const char *s2 |
124 | ) |
125 | { |
126 | while (*s1 && fribidi_toupper (c: *s1) == fribidi_toupper (c: *s2)) |
127 | { |
128 | s1++; |
129 | s2++; |
130 | } |
131 | return fribidi_toupper (c: *s1) - fribidi_toupper (c: *s2); |
132 | } |
133 | |
134 | FRIBIDI_ENTRY FriBidiCharSet |
135 | fribidi_parse_charset ( |
136 | /* input */ |
137 | const char *s |
138 | ) |
139 | { |
140 | int i; |
141 | |
142 | for (i = FRIBIDI_CHAR_SETS_NUM; i; i--) |
143 | if (fribidi_strcasecmp (s1: s, s2: char_sets[i].name) == 0) |
144 | return i; |
145 | |
146 | return FRIBIDI_CHAR_SET_NOT_FOUND; |
147 | } |
148 | |
149 | FRIBIDI_ENTRY FriBidiStrIndex |
150 | fribidi_charset_to_unicode ( |
151 | /* input */ |
152 | FriBidiCharSet char_set, |
153 | const char *s, |
154 | FriBidiStrIndex len, |
155 | /* output */ |
156 | FriBidiChar *us |
157 | ) |
158 | { |
159 | if (char_sets[char_set].charset_to_unicode) |
160 | return (*char_sets[char_set].charset_to_unicode) (s, len, us); |
161 | else if (char_sets[char_set].charset_to_unicode_c) |
162 | { |
163 | register FriBidiStrIndex l; |
164 | for (l = len; l; l--) |
165 | *us++ = (*char_sets[char_set].charset_to_unicode_c) (*s++); |
166 | return len; |
167 | } |
168 | else |
169 | return 0; |
170 | } |
171 | |
172 | FRIBIDI_ENTRY FriBidiStrIndex |
173 | fribidi_unicode_to_charset ( |
174 | /* input */ |
175 | FriBidiCharSet char_set, |
176 | const FriBidiChar *us, |
177 | FriBidiStrIndex len, |
178 | /* output */ |
179 | char *s |
180 | ) |
181 | { |
182 | if (char_sets[char_set].unicode_to_charset) |
183 | return (*char_sets[char_set].unicode_to_charset) (us, len, s); |
184 | else if (char_sets[char_set].unicode_to_charset_c) |
185 | { |
186 | register FriBidiStrIndex l; |
187 | for (l = len; l; l--) |
188 | *s++ = (*char_sets[char_set].unicode_to_charset_c) (*us++); |
189 | *s = '\0'; |
190 | return len; |
191 | } |
192 | else |
193 | return 0; |
194 | } |
195 | |
196 | FRIBIDI_ENTRY const char * |
197 | fribidi_char_set_name ( |
198 | /* input */ |
199 | FriBidiCharSet char_set |
200 | ) |
201 | { |
202 | return char_sets[char_set].name ? char_sets[char_set].name : "" ; |
203 | } |
204 | |
205 | FRIBIDI_ENTRY const char * |
206 | fribidi_char_set_title ( |
207 | /* input */ |
208 | FriBidiCharSet char_set |
209 | ) |
210 | { |
211 | return char_sets[char_set].title ? char_sets[char_set]. |
212 | title : fribidi_char_set_name (char_set); |
213 | } |
214 | |
215 | FRIBIDI_ENTRY const char * |
216 | fribidi_char_set_desc ( |
217 | /* input */ |
218 | FriBidiCharSet char_set |
219 | ) |
220 | { |
221 | return char_sets[char_set].desc ? char_sets[char_set].desc () : NULL; |
222 | } |
223 | |
224 | /* Editor directions: |
225 | * vim:textwidth=78:tabstop=8:shiftwidth=2:autoindent:cindent |
226 | */ |
227 | |