1 /*
2  *                           TERMS AND CONDITIONS
3  *                                   FOR
4  *                         OPEN SOURCE CODE LICENSE
5  *                               Version 1.1
6  *
7  * Japan Registry Services Co., Ltd. ("JPRS"), a Japanese corporation
8  * having its head office at Chiyoda First Bldg. East 13F 3-8-1 Nishi-Kanda,
9  * Chiyoda-ku, Tokyo 101-0065, Japan, grants you the license for open source
10  * code specified in EXHIBIT A the "Code" subject to the following Terms and
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107  *
108  *                                EXHIBIT A
109  *
110  * The original open source code of idnkit-2 is idnkit-1.0 developed and
111  * conceived by Japan Network Information Center ("JPNIC"), a Japanese
112  * association, Kokusai-Kougyou-Kanda Bldg 6F, 2-3-4 Uchi-Kanda,
113  * Chiyoda-ku, Tokyo 101-0047, Japan, and JPRS modifies above original code
114  * under following Terms and Conditions set forth by JPNIC.
115  *
116  *                                  JPNIC
117  *
118  * Copyright (c) 2000-2002 Japan Network Information Center.  All rights reserved.
119  *
120  * By using this file, you agree to the terms and conditions set forth bellow.
121  *
122  *                       LICENSE TERMS AND CONDITIONS
123  *
124  * The following License Terms and Conditions apply, unless a different
125  * license is obtained from Japan Network Information Center ("JPNIC"),
126  * a Japanese association, Kokusai-Kougyou-Kanda Bldg 6F, 2-3-4 Uchi-Kanda,
127  * Chiyoda-ku, Tokyo 101-0047, Japan.
128  *
129  * 1. Use, Modification and Redistribution (including distribution of any
130  *    modified or derived work) in source and/or binary forms is permitted
131  *    under this License Terms and Conditions.
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134  *    appear in each source code file, this License Terms and Conditions.
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136  * 3. Redistribution in binary form must reproduce the Copyright Notice,
137  *    this License Terms and Conditions, in the documentation and/or other
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140  *    "Copyright (c) 2000-2002 Japan Network Information Center.  All rights reserved."
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156  *    ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
157  *
158  *
159  *                        JPRS Public License Notice
160  *                                   For
161  *                                idnkit-2.
162  *
163  * The contents of this file are subject to the Terms and Conditions for
164  * the Open Source Code License (the "OSCL"). You may not use this file
165  * except in compliance with above terms and conditions. A copy of the OSCL
166  * is available at <http://jprs.co.jp/idn/>.
167  * The JPRS Revised Code is idnkit-2.
168  * The Initial Developer of the JPRS Revised Code is Japan Network
169  * Information Center ("JPNIC"), a Japanese association,
170  * Kokusai-Kougyou-Kanda Bldg 6F, 2-3-4 Uchi-Kanda, Chiyoda-ku, Tokyo
171  * 101-0047, Japan.
172  * "Copyright (c) 2000-2002 Japan Network Information Center.  All rights reserved."
173  * "Copyright (c) 2010-2012 Japan Registry Services Co., Ltd.  All rights reserved."
174  * Contributor(s): ______________________________________.
175  *
176  * If you wish to allow use of your version of this file only under the
177  * above License(s) and not to allow others to use your version of this
178  * file, please indicate your decision by deleting the relevant provisions
179  * above and replacing them with the notice and other provisions required
180  * by the above License(s). If you do not delete the relevant provisions,
181  * a recipient may use your version of this file under either the above
182  * License(s).
183  */
184 
185 /*
186  * UTF-8 encoded string facility.
187  */
188 
189 #ifndef IDN_UTF8_H
190 #define IDN_UTF8_H 1
191 
192 #ifdef __cplusplus
193 extern "C" {
194 #endif
195 
196 #include <stddef.h>
197 #include <idn/result.h>
198 
199 /*
200  * UTF-8 encoding name.
201  */
202 #ifndef IDN__UTF8_ENCODINGNAME
203 #define IDN__UTF8_ENCODINGNAME "UTF-8"		/* by IANA */
204 #endif
205 
206 /*
207  * Get the length of a character.
208  *
209  * Get the length (in bytes) of a character whose first byte is pointed
210  * by 's'.  Since this function only looks one first byte to determine the
211  * length, it is possible some of the following bytes are invalid.
212  */
213 extern int
214 idn__utf8_mblen(const char *s);
215 
216 /*
217  * Get one character in UTF-32.
218  *
219  * Similar to idn__utf8_getmb(), except that the result is not in UTF-8
220  * encoding, but in UTF-32 format (plain 32bit integer value).
221  */
222 int
223 idn__utf8_mbtowc(const char *s, unsigned long *vp);
224 
225 /*
226  * Put one character.
227  *
228  * This function is an opposite of idn__utf8_mbtowc().  It takes an UTF-32
229  * value 'v', convert it to UTF-8 encoded sequence, and store it to 's',
230  * whose length is 'len'.  It returns the number of bytes written, or
231  * zero 'v' is out of range or 'len' is too small.
232  */
233 int
234 idn__utf8_wctomb(char *s, size_t len, unsigned long v);
235 
236 /*
237  * Check the validity of UTF-8 encoded character.
238  *
239  * Check if the character pointed by 's' is a valid UTF-8 encoded
240  * character.  Return the length of the character (in bytes) if it is valid,
241  * 0 otherwise.
242  */
243 int
244 idn__utf8_isvalidchar(const char *s);
245 
246 /*
247  * Check the validity of UTF-8 encoded string.
248  *
249  * Check if the NUL-terminated string 's' is valid as a UTF-8 encoded
250  * string.  Return 1 if it is valid, 0 otherwise.
251  */
252 extern int
253 idn__utf8_isvalidstring(const char *s);
254 
255 /*
256  * Find first byte of a character.
257  *
258  * Find the first byte of a character 's' points to.  's' may point
259  * the 2nd or later byte of a character.  'known_top' is a pointer to
260  * a string which contains 's', and is known to be the first byte of
261  * a character.  If it couldn't find the first byte between 'known_top'
262  * and 's', NULL will be returned.
263  */
264 char *
265 idn__utf8_findfirstbyte(const char *s, const char *known_top);
266 
267 #ifdef __cplusplus
268 }
269 #endif
270 
271 #endif /* IDN_UTF8_H */
272