kc3-lang/gnulib/tests/test-mbrlen.c

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  Date : 2024-01-01T10:31:48
  

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• tests/test-mbrlen.c

• /* Test of conversion of multibyte character to wide character.
     Copyright (C) 2008-2024 Free Software Foundation, Inc.
  
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation, either version 3 of the License, or
     (at your option) any later version.
  
     This program is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
  
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  
  /* Written by Bruno Haible <bruno@clisp.org>, 2023.  */
  
  #include <config.h>
  
  #include <wchar.h>
  
  #include "signature.h"
  SIGNATURE_CHECK (mbrlen, size_t, (char const *, size_t, mbstate_t *));
  
  #include <locale.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  
  #include "macros.h"
  
  int
  main (int argc, char *argv[])
  {
    mbstate_t state;
    size_t ret;
  
    /* configure should already have checked that the locale is supported.  */
    if (setlocale (LC_ALL, "") == NULL)
      return 1;
  
    /* Test zero-length input.  */
    {
      memset (&state, '\0', sizeof (mbstate_t));
      ret = mbrlen ("x", 0, &state);
      ASSERT (ret == (size_t)(-2));
      ASSERT (mbsinit (&state));
    }
  
    /* Test NUL byte input.  */
    {
      memset (&state, '\0', sizeof (mbstate_t));
      ret = mbrlen ("", 1, &state);
      ASSERT (ret == 0);
      ASSERT (mbsinit (&state));
    }
  
    /* Test single-byte input.  */
    {
      int c;
      char buf[1];
  
      memset (&state, '\0', sizeof (mbstate_t));
      for (c = 0; c < 0x100; c++)
        switch (c)
          {
          case '\t': case '\v': case '\f':
          case ' ': case '!': case '"': case '#': case '%':
          case '&': case '\'': case '(': case ')': case '*':
          case '+': case ',': case '-': case '.': case '/':
          case '0': case '1': case '2': case '3': case '4':
          case '5': case '6': case '7': case '8': case '9':
          case ':': case ';': case '<': case '=': case '>':
          case '?':
          case 'A': case 'B': case 'C': case 'D': case 'E':
          case 'F': case 'G': case 'H': case 'I': case 'J':
          case 'K': case 'L': case 'M': case 'N': case 'O':
          case 'P': case 'Q': case 'R': case 'S': case 'T':
          case 'U': case 'V': case 'W': case 'X': case 'Y':
          case 'Z':
          case '[': case '\\': case ']': case '^': case '_':
          case 'a': case 'b': case 'c': case 'd': case 'e':
          case 'f': case 'g': case 'h': case 'i': case 'j':
          case 'k': case 'l': case 'm': case 'n': case 'o':
          case 'p': case 'q': case 'r': case 's': case 't':
          case 'u': case 'v': case 'w': case 'x': case 'y':
          case 'z': case '{': case '|': case '}': case '~':
            /* c is in the ISO C "basic character set".  */
            ASSERT (c < 0x80);
            /* c is an ASCII character.  */
            buf[0] = c;
  
            ret = mbrlen (buf, 1, &state);
            ASSERT (ret == 1);
            ASSERT (mbsinit (&state));
  
            break;
          default:
            break;
          }
    }
  
    /* Test special calling convention, passing a NULL pointer.  */
    {
      memset (&state, '\0', sizeof (mbstate_t));
      ret = mbrlen (NULL, 5, &state);
      ASSERT (ret == 0);
      ASSERT (mbsinit (&state));
    }
  
  #ifdef __ANDROID__
    /* On Android ≥ 5.0, the default locale is the "C.UTF-8" locale, not the
       "C" locale.  Furthermore, when you attempt to set the "C" or "POSIX"
       locale via setlocale(), what you get is a "C" locale with UTF-8 encoding,
       that is, effectively the "C.UTF-8" locale.  */
    if (argc > 1 && strcmp (argv[1], "1") == 0 && MB_CUR_MAX > 1)
      argv[1] = "3";
  #endif
  
    if (argc > 1)
      switch (argv[1][0])
        {
        case '1':
          /* C or POSIX locale.  */
          {
            int c;
            char buf[1];
  
            memset (&state, '\0', sizeof (mbstate_t));
            for (c = 0; c < 0x100; c++)
              if (c != 0)
                {
                  /* We are testing all nonnull bytes.  */
                  buf[0] = c;
  
                  ret = mbrlen (buf, 1, &state);
                  /* POSIX:2018 says: "In the POSIX locale an [EILSEQ] error
                     cannot occur since all byte values are valid characters."  */
                  ASSERT (ret == 1);
                  ASSERT (mbsinit (&state));
                }
          }
          return 0;
  
        case '2':
          /* Locale encoding is ISO-8859-1 or ISO-8859-15.  */
          {
            char input[] = "B\374\337er"; /* "Büßer" */
            memset (&state, '\0', sizeof (mbstate_t));
  
            ret = mbrlen (input, 1, &state);
            ASSERT (ret == 1);
            ASSERT (mbsinit (&state));
            input[0] = '\0';
  
            ret = mbrlen (input + 1, 1, &state);
            ASSERT (ret == 1);
            ASSERT (mbsinit (&state));
            input[1] = '\0';
  
            ret = mbrlen (input + 2, 3, &state);
            ASSERT (ret == 1);
            ASSERT (mbsinit (&state));
            input[2] = '\0';
  
            ret = mbrlen (input + 3, 2, &state);
            ASSERT (ret == 1);
            ASSERT (mbsinit (&state));
            input[3] = '\0';
  
            ret = mbrlen (input + 4, 1, &state);
            ASSERT (ret == 1);
            ASSERT (mbsinit (&state));
          }
          return 0;
  
        case '3':
          /* Locale encoding is UTF-8.  */
          {
            char input[] = "B\303\274\303\237er"; /* "Büßer" */
            memset (&state, '\0', sizeof (mbstate_t));
  
            ret = mbrlen (input, 1, &state);
            ASSERT (ret == 1);
            ASSERT (mbsinit (&state));
            input[0] = '\0';
  
            ret = mbrlen (input + 1, 1, &state);
            ASSERT (ret == (size_t)(-2));
            ASSERT (!mbsinit (&state));
            input[1] = '\0';
  
            ret = mbrlen (input + 2, 5, &state);
            ASSERT (ret == 1);
            ASSERT (mbsinit (&state));
            input[2] = '\0';
  
            ret = mbrlen (input + 3, 4, &state);
            ASSERT (ret == 2);
            ASSERT (mbsinit (&state));
            input[3] = '\0';
            input[4] = '\0';
  
            ret = mbrlen (input + 5, 2, &state);
            ASSERT (ret == 1);
            ASSERT (mbsinit (&state));
            input[5] = '\0';
  
            ret = mbrlen (input + 6, 1, &state);
            ASSERT (ret == 1);
            ASSERT (mbsinit (&state));
          }
          return 0;
  
        case '4':
          /* Locale encoding is EUC-JP.  */
          {
            char input[] = "<\306\374\313\334\270\354>"; /* "<日本語>" */
            memset (&state, '\0', sizeof (mbstate_t));
  
            ret = mbrlen (input, 1, &state);
            ASSERT (ret == 1);
            ASSERT (mbsinit (&state));
            input[0] = '\0';
  
            ret = mbrlen (input + 1, 2, &state);
            ASSERT (ret == 2);
            ASSERT (mbsinit (&state));
            input[1] = '\0';
            input[2] = '\0';
  
            ret = mbrlen (input + 3, 1, &state);
            ASSERT (ret == (size_t)(-2));
            ASSERT (!mbsinit (&state));
            input[3] = '\0';
  
            ret = mbrlen (input + 4, 4, &state);
            ASSERT (ret == 1);
            ASSERT (mbsinit (&state));
            input[4] = '\0';
  
            ret = mbrlen (input + 5, 3, &state);
            ASSERT (ret == 2);
            ASSERT (mbsinit (&state));
            input[5] = '\0';
            input[6] = '\0';
  
            ret = mbrlen (input + 7, 1, &state);
            ASSERT (ret == 1);
            ASSERT (mbsinit (&state));
          }
          return 0;
  
        case '5':
          /* Locale encoding is GB18030.  */
          {
            char input[] = "B\250\271\201\060\211\070er"; /* "Büßer" */
            memset (&state, '\0', sizeof (mbstate_t));
  
            ret = mbrlen (input, 1, &state);
            ASSERT (ret == 1);
            ASSERT (mbsinit (&state));
            input[0] = '\0';
  
            ret = mbrlen (input + 1, 1, &state);
            ASSERT (ret == (size_t)(-2));
            ASSERT (!mbsinit (&state));
            input[1] = '\0';
  
            ret = mbrlen (input + 2, 7, &state);
            ASSERT (ret == 1);
            ASSERT (mbsinit (&state));
            input[2] = '\0';
  
            ret = mbrlen (input + 3, 6, &state);
            ASSERT (ret == 4);
            ASSERT (mbsinit (&state));
            input[3] = '\0';
            input[4] = '\0';
            input[5] = '\0';
            input[6] = '\0';
  
            ret = mbrlen (input + 7, 2, &state);
            ASSERT (ret == 1);
            ASSERT (mbsinit (&state));
            input[7] = '\0';
  
            ret = mbrlen (input + 8, 1, &state);
            ASSERT (ret == 1);
            ASSERT (mbsinit (&state));
          }
          return 0;
        }
  
    return 1;
  }
  

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