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      1 /*
      2  * Copyright  2014 Ran Benita <ran234 (at) gmail.com>
      3  *
      4  * Permission is hereby granted, free of charge, to any person obtaining a
      5  * copy of this software and associated documentation files (the "Software"),
      6  * to deal in the Software without restriction, including without limitation
      7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
      8  * and/or sell copies of the Software, and to permit persons to whom the
      9  * Software is furnished to do so, subject to the following conditions:
     10  *
     11  * The above copyright notice and this permission notice (including the next
     12  * paragraph) shall be included in all copies or substantial portions of the
     13  * Software.
     14  *
     15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
     18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
     21  * DEALINGS IN THE SOFTWARE.
     22  */
     23 
     24 #include <assert.h>
     25 #include <inttypes.h>
     26 #include <stdbool.h>
     27 #include <stddef.h>
     28 
     29 #include "utf8.h"
     30 
     31 #define VALID(lit) assert(is_valid_utf8(lit, sizeof(lit)-1))
     32 #define INVALID(lit) assert(!is_valid_utf8(lit, sizeof(lit)-1))
     33 
     34 static void
     35 test_is_valid_utf8(void)
     36 {
     37     /*
     38      * Mostly taken from:
     39      * http://www.cl.cam.ac.uk/~mgk25/ucs/examples/UTF-8-test.txt
     40      */
     41 
     42     VALID("ascii");
     43     VALID("\xCE\xBA\xE1\xBD\xB9\xCF\x83\xCE\xBC\xCE\xB5");
     44 
     45     VALID("");
     46     VALID("\x00");
     47     VALID("\x00\x00");
     48 
     49     VALID("\x50");
     50     VALID("\xC2\x80");
     51     VALID("\xE0\xA0\x80");
     52     VALID("\xF0\x90\x80\x80");
     53 
     54     /* 5/6-byte continuations aren't allowed (unlike UTF-8-test). */
     55     INVALID("\xF8\x88\x80\x80\x80");
     56     INVALID("\xFC\x84\x80\x80\x80\x80");
     57 
     58     VALID("\x7F");
     59     VALID("\xDF\xBF");
     60     VALID("\xEF\xBF\xBF");
     61     /* VALID("\xF7\xBF\xBF\xBF"); */
     62 
     63     /* 5/6-byte continuations aren't allowed (unlike UTF-8-test). */
     64     INVALID("\xFB\xBF\xBF\xBF\xBF");
     65     INVALID("\xFD\xBFxBF\xBF\xBF");
     66 
     67     VALID("\xED\x9F\xBF");
     68     VALID("\xEE\x80\x80");
     69     VALID("\xEF\xBF\xBD");
     70     VALID("\xF4\x8F\xBF\xBF");
     71     /* VALID("\xF4\x90\x80\x80"); */
     72 
     73     INVALID("\x80");
     74     INVALID("\xBF");
     75     INVALID("\x80\xBF");
     76     INVALID("\x80\xBF\x80");
     77     INVALID("\x80\xBF\x80\xBF");
     78     INVALID("\x80\xBF\x80\xBF\x80");
     79     INVALID("\x80\xBF\x80\xBF\x80\xBF");
     80     INVALID("\x80\xBF\x80\xBF\x80\xBF\x80");
     81     INVALID("\x80\x81\x82\x83\x84\x85\x86\x87\x88\x89\x8A\x8B\x8C\x8D\x8E\x8F"
     82             "\x90\x91\x92\x93\x94\x95\x96\x97\x98\x99\x9A\x9B\x9C\x9D\x9E\x9F"
     83             "\xA0\xA1\xA2\xA3\xA4\xA5\xA6\xA7\xA8\xA9\xAA\xAB\xAC\xAD\xAE\xAF"
     84             "\xB0\xB1\xB2\xB3\xB4\xB5\xB6\xB7\xB8\xB9\xBA\xBB\xBC\xBD\xBE\xBF");
     85 
     86     INVALID("\xC0 \xC1 \xC2 \xC3 \xC4 \xC5 \xC6 \xC7 \xC8 \xC9 \xCA \xCB \xCC "
     87             "\xCD \xCE \xCF "
     88             "\xD0 \xD1 \xD2 \xD3 \xD4 \xD5 \xD6 \xD7 \xD8 \xD9 \xDA \xDB \xDD "
     89             "\xDD \xDE \xDF ");
     90     INVALID("\xF0 \xF1 \xF2 \xF3 \xF4 \xF5 \xF6 \xF7 ");
     91     INVALID("\xF8 \xF9 \xFA \xFB ");
     92     INVALID("\xFC \xFD ");
     93 
     94     INVALID("\xC0");
     95     INVALID("\xE0\x80");
     96     INVALID("\xF0\x80\x80");
     97     INVALID("\xF8\x80\x80\x80");
     98     INVALID("\xFC\x80\x80\x80\x80");
     99     INVALID("\xDF");
    100     INVALID("\xEF\xBF");
    101     INVALID("\xF7\xBF\xBF");
    102     INVALID("\xFB\xBF\xBF\xBF");
    103     INVALID("\xFD\xBF\xBF\xBF\xBF");
    104 
    105     INVALID("\xC0\xE0\x80\xF0\x80\x80\xF8\x80\x80\x80\xFC\x80\x80\x80\x80"
    106             "\xDF\xEF\xBF\xF7\xBF\xBF\xFB\xBF\xBF\xBF\xFD\xBF\xBF\xBF\xBF");
    107 
    108     INVALID("\xFE");
    109     INVALID("\xFF");
    110     INVALID("\xFE\xFE\xFF\xFF");
    111 
    112     INVALID("\xC0\xAF");
    113     INVALID("\xE0\x80\xAF");
    114     INVALID("\xF0\x80\x80\xAF");
    115     INVALID("\xF8\x80\x80\x80\xAF");
    116     INVALID("\xFC\x80\x80\x80\x80\xAF");
    117 
    118     INVALID("\xC1\xBF");
    119     INVALID("\xE0\x9F\xBF");
    120     INVALID("\xF0\x8F\xBF\xBF");
    121     INVALID("\xF8\x87\xBF\xBF\xBF");
    122     INVALID("\xFC\x83\xBF\xBF\xBF\xBF");
    123 
    124     INVALID("\xC0\x80");
    125     INVALID("\xE0\x80\x80");
    126     INVALID("\xF0\x80\x80\x80");
    127     INVALID("\xF8\x80\x80\x80\x80");
    128     INVALID("\xFC\x80\x80\x80\x80\x80");
    129 
    130     INVALID("\xED\xA0\x80");
    131     INVALID("\xED\xAD\xBF");
    132     INVALID("\xED\xAE\x80");
    133     INVALID("\xED\xAF\xBF");
    134     INVALID("\xED\xB0\x80");
    135     INVALID("\xED\xBE\x80");
    136     INVALID("\xED\xBF\xBF");
    137 
    138     INVALID("\xED\xA0\x80\xED\xB0\x80");
    139     INVALID("\xED\xA0\x80\xED\xBF\xBF");
    140     INVALID("\xED\xAD\xBF\xED\xB0\x80");
    141     INVALID("\xED\xAD\xBF\xED\xBF\xBF");
    142     INVALID("\xED\xAE\x80\xED\xB0\x80");
    143     INVALID("\xED\xAE\x80\xED\xBF\xBF");
    144     INVALID("\xED\xAF\xBF\xED\xB0\x80");
    145     INVALID("\xED\xAF\xBF\xED\xBF\xBF");
    146 
    147     /* INVALID("\xEF\xBF\xBE"); */
    148     /* INVALID("\xEF\xBF\xBF"); */
    149 }
    150 
    151 int
    152 main(void)
    153 {
    154     test_is_valid_utf8();
    155 
    156     return 0;
    157 }
    158