topical media & game development

topical media & game development
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _
professional-sql-11-lib-CommandLine.php / php

  <?php
  // extend Exception class for custom exception type
  class CommandLineOptionException extends Exception { }
  
  class CommandLine
  {
      // define different configuration file types
      const CONFIG_TYPE_PLAIN = 1;
      const CONFIG_TYPE_INI = 2;
  
      // accept array of command line arguments, optional array of
      // valid/whitelist options
      static public function parseOptions( $args,$ allowed = array())
      {
           $options = array();$ count = count( $args);$ // retrive arguments and populate options array
          for ( $i = 1;$ i <  $count;$ i++)
          {
              // retrieve arguments in form of --abc=foo
              if (preg_match('/^--([-A-Z0-9]+)=(.+) $/i',$ args[ $i],$ matches))
              {
                  if (empty( $allowed) || in_array($ matches[1],  $allowed))
                  {$ options[ $matches[1]] =$ matches[2];
                  }
                  else
                  {
                      throw new CommandLineOptionException(
                          'Unrecognized option ' .  $matches[1]);
                  }
              }$ // retrieve --abc arguments
              else if (substr(args[ $i], 0, 2) == '--')
              {$ tmp = substr( $args[$ i], 2);
                  if (empty( $allowed) || in_array($ tmp,  $allowed))
                  {$ options[ $tmp] = true;
                  }
                  else
                  {
                      throw new CommandLineOptionException(
                          'Unrecognized option ' .$ tmp);
                  }
              }
  
              // retrieve -abc foo, -abc, -a foo and -a arguments
              else if ( $args[$ i][0] == '-' && strlen( $args[$ i]) > 1)
              {
                  // set all arguments to true except for last in sequence
                  for ( $j = 1;$ j < strlen( $args[$ i]) - 1;  $j++)
                  {
                      if (empty($ allowed) || in_array( $args[$ i][ $j],$ allowed))
                      {
                           $options[$ args[ $i][$ j]] = true;
                      }
                      else
                      {
                          throw new CommandLineOptionException(
                              'Unrecognized option ' .  $args[$ i][ $j]);
                      }
                  }$ // set last argument in compressed sequence
                  tmp = substr( $args[$ i], -1, 1);
                  if (empty( $allowed) || in_array($ tmp,  $allowed))
                  {$ // assign next args value if is value
                      if ( $i + 1 <$ count &&  $args[$ i + 1][0] != '-')
                      {
                           $options[$ tmp] =  $args[$ i + 1];
                           $i++;
                      }$ // assign option as boolean
                      else
                      {
                          options[ $tmp] = true;
                      }
                  }
                  else
                  {
                      throw new CommandLineOptionException(
                          'Unrecognized option ' .$ tmp);
                  }
              }
  
              // invalid option format
              else
              {
                  throw new CommandLineOptionException(
                      'Invalid option format at ' .  $args[$ i]);
              }
          }
  
          return  $options;
      }$ // process a configuration file and return its options as an array
      static public function parseConfigFile(file,  $type = CONFIG_TYPE_PLAIN)
      {$ options = array();
  
          // process plain configuration file
          if ( $type == CONFIG_TYPE_PLAIN)
          {$ fp = fopen( $file, 'r');
              while (!feof($ fp))
              {
                   $line = trim(fgets($ fp));
                  // skip blank lines and comments
                  if ( $line && !preg('^#',$ line))
                  {
                       $pieces = explode('=',$ line);
                       $opt = trim($ pieces[0]);
                       $value = trim($ pieces[1]);
      
                       $options[$ opt] =  $value;
                  }
              }
              fclose($ fp);
          }
  
          // process ini configuration file
          else if ( $type == CONFIG_TYPE_INI)
          {$ options = parse_ini_file( $file);
          }
          return$ options;
      }
  
      // prompt for user input, accept optional maximum input length and 
      // callback function for validation
      static public function prompt( $label,$ length = 255,  $callback = null)
      {
          echo$ label . ': ';
           $value = trim(fread(STDIN, 255));
      
          return ($ callback) ? call_user_func( $callback,$ value) :  $value;
      }$ // prompt for user input, accept optional default value, maximum input
      // length and callback function for validation
      static public function promptDefault(label,  $default = null,$ length = 255,  $callback = null)
      {$ label .= ' [' .  $default .']';$ value = self::prompt( $label,$ length);
  
          if (! $value)
          {$ value =  $default;
          }
      
          return ($ callback) ? call_user_func( $callback,$ value) :  $value;
      }
  
  }
  ?>$
[] readme course(s) preface I 1 2 II 3 4 III 5 6 7 IV 8 9 10 V 11 12 afterthought(s) appendix reference(s) example(s) resource(s) _
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