psx-interf.c

正则表达式库

  if (should_match && error_code_returned == REG_NOMATCH)
    {  
      printf ("\nIgnore-case test failed:\n");
      printf ("  The string to match was:  `%s'.\n", string);
      print_pattern_info (pattern, &pattern_buffer);

      if (cflags & REG_ICASE)
        printf ("  The cflag REG_ICASE was set.\n");
    }

  regfree (&pattern_buffer);
}


static void
test_newline (should_match, pattern, string, cflags)
  boolean should_match;
  char *pattern;
  char *string;
  int cflags;
{
  regex_t pattern_buffer;
  int error_code_returned;

  test_compile (1, 0, pattern, &pattern_buffer, cflags);
  error_code_returned = regexec (&pattern_buffer, string, 0, 0, 0);

  if (should_match && error_code_returned == REG_NOMATCH)
    {  
      printf ("\nNewline test failed:\n");
      printf ("  The string to match was:  `%s'.\n", string);
      print_pattern_info (pattern, &pattern_buffer);

      if (cflags & REG_NEWLINE)
        printf ("  The cflag REG_NEWLINE was set.\n");
      else
        printf ("  The cflag REG_NEWLINE wasn't set.\n");
    }

  regfree (&pattern_buffer);
}


static void
test_posix_match (should_match, pattern, string, cflags)
    boolean should_match;
    char *pattern;
    char *string;
    int cflags;
{
  regex_t pattern_buffer;
  int error_code_returned;
  boolean was_error = false;

  test_compile (1, 0, pattern, &pattern_buffer, cflags);
  error_code_returned = regexec (&pattern_buffer, string, 0, 0, 0);

  if (should_match && error_code_returned == REG_NOMATCH)
    {  
      printf ("\nShould have matched but didn't:\n");
      was_error = true;
    }
  else if (!should_match && error_code_returned != REG_NOMATCH)
    {  
      printf ("\nShould not have matched but did:\n");
      was_error = true;
    }

  if (was_error)
    {
      printf ("  The string to match was:  `%s'.\n", string);
      print_pattern_info (pattern, &pattern_buffer);
    }

  regfree (&pattern_buffer);
}


static void
test_regexec ()
{
  regmatch_t pmatch[3];
  regmatch_t correct_pmatch[3];
  int cflags = 0;
  int eflags = 0;
    
  printf ("\nStarting regexec tests.\n");

  cflags = REG_NOSUB;    /* shouldn't look at any of pmatch.  */
  test_pmatch ("a", "a", 0, pmatch, correct_pmatch, cflags);
    
  /* Ask for less `pmatch'es than there are pattern subexpressions.
     (Shouldn't look at pmatch[2].  */
  cflags = REG_EXTENDED;
  fill_pmatch (correct_pmatch, 0, 1, 0, 1, 100, 101);
  test_pmatch ("((a))", "a", 2, pmatch, correct_pmatch, cflags);
    
  /* Ask for same number of `pmatch'es as there are pattern subexpressions.  */
  cflags = REG_EXTENDED;
  fill_pmatch(correct_pmatch, 0, 1, 0, 1, -1, -1);
  test_pmatch ("(a)", "a", 2, pmatch, correct_pmatch, cflags);
    
  /* Ask for more `pmatch'es than there are pattern subexpressions.  */
  cflags = REG_EXTENDED;
  fill_pmatch (correct_pmatch, 0, 1, -1, -1, -1, -1);
  test_pmatch ("a", "a", 2, pmatch, correct_pmatch, cflags);

  eflags = REG_NOTBOL;
  test_eflags (true, false, "^a", "a", cflags, eflags);
  test_eflags (true, false, "(^a)", "a", cflags, eflags);
  test_eflags (true, false, "a|^b", "b", cflags, eflags);
  test_eflags (true, false, "^b|a", "b", cflags, eflags);

  eflags = REG_NOTEOL;
  test_eflags (false, true, "a$", "a", cflags, eflags);
  test_eflags (false, true, "(a$)", "a", cflags, eflags);
  test_eflags (false, true, "a|b$", "b", cflags, eflags);
  test_eflags (false, true, "b$|a", "b", cflags, eflags);

  eflags = REG_NOTBOL | REG_NOTEOL;
  test_eflags (true, true, "^a$", "a", cflags, eflags);
  test_eflags (true, true, "(^a$)", "a", cflags, eflags);
  test_eflags (true, true, "a|(^b$)", "b", cflags, eflags);
  test_eflags (true, true, "(^b$)|a", "b", cflags, eflags);

  cflags = REG_ICASE;
  test_ignore_case (true, "a", "a", cflags);
  test_ignore_case (true, "A", "A", cflags);
  test_ignore_case (true, "A", "a", cflags);
  test_ignore_case (true, "a", "A", cflags);

  test_ignore_case (true, "@", "@", cflags);
  test_ignore_case (true, "\\[", "[", cflags);
  test_ignore_case (true, "`", "`", cflags);
  test_ignore_case (true, "{", "{", cflags);

  test_ignore_case (true, "[!-`]", "A", cflags);
  test_ignore_case (true, "[!-`]", "a", cflags);

  cflags = 0;
  test_ignore_case (false, "a", "a", cflags);
  test_ignore_case (false, "A", "A", cflags);
  test_ignore_case (false, "A", "a", cflags);
  test_ignore_case (false, "a", "A", cflags);

  test_ignore_case (true, "@", "@", cflags);
  test_ignore_case (true, "\\[", "[", cflags);
  test_ignore_case (true, "`", "`", cflags);
  test_ignore_case (true, "{", "{", cflags);

  test_ignore_case (true, "[!-`]", "A", cflags);
  test_ignore_case (false, "[!-`]", "a", cflags);


  /* Test newline stuff.  */
  cflags = REG_EXTENDED | REG_NEWLINE;
  test_newline (true, "\n", "\n", cflags);
  test_newline (true, "a\n", "a\n", cflags);
  test_newline (true, "\nb", "\nb", cflags);
  test_newline (true, "a\nb", "a\nb", cflags);

  test_newline (false, ".", "\n", cflags);
  test_newline (false, "[^a]", "\n", cflags);

  test_newline (true, "\n^a", "\na", cflags);
  test_newline (true, "\n(^a|b)", "\na", cflags);
  test_newline (true, "a$\n", "a\n", cflags);
  test_newline (true, "(a$|b)\n", "a\n", cflags);
  test_newline (true, "(a$|b|c)\n", "a\n", cflags);
  test_newline (true, "((a$|b|c)$)\n", "a\n", cflags);
  test_newline (true, "((a$|b|c)$)\n", "b\n", cflags);
  test_newline (true, "(a$|b)\n|a\n", "a\n", cflags);

  test_newline (true, "^a", "\na", cflags);
  test_newline (true, "a$", "a\n", cflags);
  
  /* Now test normal behavior.  */
  cflags = REG_EXTENDED;
  test_newline (true, "\n", "\n", cflags);
  test_newline (true, "a\n", "a\n", cflags);
  test_newline (true, "\nb", "\nb", cflags);
  test_newline (true, "a\nb", "a\nb", cflags);

  test_newline (true, ".", "\n", cflags);
  test_newline (true, "[^a]", "\n", cflags);

  test_newline (false, "\n^a", "\na", cflags);
  test_newline (false, "a$\n", "a\n", cflags);

  test_newline (false, "^a", "\na", cflags);
  test_newline (false, "a$", "a\n", cflags);


  /* Test that matches whole string only.  */
  cflags = 0;
  test_posix_match (true, "a", "a", cflags);
  
  /* Tests that match substrings.  */
  test_posix_match (true, "a", "ab", cflags);
  test_posix_match (true, "b", "ab", cflags);
  
  /* Test that doesn't match.  */
  test_posix_match (false, "a", "b", cflags);

  printf ("\nFinished regexec tests.\n");
}


static void
test_error_code_message (error_code, expected_error_message)
  int error_code;
  char *expected_error_message;
{
  char returned_error_message[TEST_ERRBUF_SIZE];
  char error_code_string[ERROR_CODE_LENGTH];
  size_t expected_error_message_length = strlen (expected_error_message) + 1;
  size_t returned_error_message_length = regerror (error_code, 0, 
					             returned_error_message, 
	                                             TEST_ERRBUF_SIZE);

  if (returned_error_message_length != expected_error_message_length)
    {
      printf ("\n\n  Testing returned error codes, with expected error \
message  `%s':\n", expected_error_message);

      printf ("\n\n  and returned error message `%s':\n",
       	      returned_error_message);
      printf ("  should have returned a length of %d but returned %d.\n",
	      expected_error_message_length, returned_error_message_length);
    }

  if (strncmp (expected_error_message, returned_error_message, 
	       TEST_ERRBUF_SIZE - 1) != 0)
    {
      
      get_error_string (error_code, error_code_string), 
      printf ("\n\n  With error code %s (%d), expected error message:\n",
      	      error_code_string, error_code);
                    
      printf ("    `%s'\n", expected_error_message);
      printf ("  but got:\n");
      printf ("    `%s'\n", returned_error_message);
    }
}


static void
test_error_code_allocation (error_code, expected_error_message)
  int error_code;
  char *expected_error_message;
{
  char *returned_error_message = NULL;
  char error_code_string[ERROR_CODE_LENGTH];
  size_t returned_error_message_length = regerror (error_code, 0, 
					             returned_error_message, 
	                                             (size_t)0);

  returned_error_message = xmalloc (returned_error_message_length + 1);
    
  regerror (error_code, 0, returned_error_message, 
	    returned_error_message_length);
  
  if (strcmp (expected_error_message, returned_error_message) != 0)
    {
      get_error_string (error_code, error_code_string), 
      
      printf ("\n\n  Testing error code allocation,\n"); 
      printf ("with error code %s (%d), expected error message:\n", 
	       error_code_string, error_code);
      printf ("    `%s'\n", expected_error_message);
      printf ("  but got:\n");
      printf ("    `%s'\n", returned_error_message);
    }
}


static void
test_regerror ()
{
  test_error_code_message (REG_NOMATCH, "No match"); 
  test_error_code_message (REG_BADPAT, "Invalid regular expression");
  test_error_code_message (REG_ECOLLATE, "Invalid collation character"); 
  test_error_code_message (REG_ECTYPE, "Invalid character class name"); 
  test_error_code_message (REG_EESCAPE, "Trailing backslash"); 
  test_error_code_message (REG_ESUBREG, "Invalid back reference"); 
  test_error_code_message (REG_EBRACK, "Unmatched [ or [^"); 
  test_error_code_message (REG_EPAREN, "Unmatched ( or \\("); 
  test_error_code_message (REG_EBRACE, "Unmatched \\{"); 
  test_error_code_message (REG_BADBR, "Invalid content of \\{\\}"); 
  test_error_code_message (REG_ERANGE, "Invalid range end"); 
  test_error_code_message (REG_ESPACE, "Memory exhausted"); 
  test_error_code_message (REG_BADRPT, "Invalid preceding regular expression");
  test_error_code_message (REG_EEND, "Premature end of regular expression");
  test_error_code_message (REG_ESIZE, "Regular expression too big");
  test_error_code_allocation (REG_ERPAREN, "Unmatched ) or \\)");
}


void
test_posix_interface ()
{
  printf ("\nStarting POSIX interface tests.\n");
  t = posix_interface_test;
  
  test_regcomp ();
  test_regexec ();
  test_regerror ();
  
  printf ("\nFinished POSIX interface tests.\n");
}