topical media & game development
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lib-js-terminal-parser-sample.htm / htm



  <html>
  <head>
          <title>termlib Sample Parser</title>
          <script language="JavaScript" type="text/javascript" src="lib-js-terminal-termlib.js"></script>
          <script language="JavaScript" type="text/javascript" src="lib-js-terminal-termlib-parser.js"></script>
  
  <script language="JavaScript" type="text/javascript">
  <!--
  
  /*
    test sample for termlib.js and termlib_parser.js
  
    (c) Norbert Landsteiner 2005
    mass:werk - media environments
    <http://www.masswerk.at>
  
  */
  
  var term;
  
  var helpPage=[
          '\%CS%+r Terminal Help %-r\%n',
          '  This is just a sample to demonstrate command line parsing.',
          ' ',
          '  Use one of the following commands:',
          '     clear [-a] .......... clear the terminal',
          '                           option "a" also removes the status line',
          '     number -n<value> .... return value of option "n" (test for options)',
          '     repeat -n<value> .... repeats the first argument n times (another test)',
          '     login <username> .... sample login (test for raw mode)',
          '     exit ................ close the terminal (same as <ESC>)',
          '     help ................ show this help page',
          ' ',
          '  other input will be echoed to the terminal as a list of parsed arguments',
          '  in the format <argument index> <quoting level> "<parsed value>".',
          ' '
  ];
  
  function termOpen() {
          if (!term) {
                  term=new Terminal(
                          {
                                  x: 220,
                                  y: 70,
                                  termDiv: 'termDiv',
                                  ps: '[guest]',
                                  initHandler: termInitHandler,
                                  handler: commandHandler
                          }
                  );
                  if (term) term.open();
          }
          else if (term.closed) {
                  term.open();
          }
          else {
                  term.focus();
          }
  }
  
  function termInitHandler() {
          // output a start up screen
          this.write(
                  [
                          this.globals.center('  
  
  
  
  
  
  
  
  
  
  
  
  
', 80),














                          this.globals.center('#                                                  #', 80),
                          this.globals.center('#           termlib.js - Sample Parser             #', 80),
                          this.globals.center('#  Input is echoed as a list of parsed arguments.  #', 80),
                          this.globals.center('#                                                  #', 80),
                          this.globals.center('#  Type "help" for commands.                       #', 80),
                          this.globals.center('#                                                  #', 80),
                          this.globals.center('#  (c) N. Landsteiner 2005;  www.masswerk.at       #', 80),
                          this.globals.center('#                                                  #', 80),
                          this.globals.center('  
  
  
  
  
  
  
  
  
  
  
  
  
', 80),














                          '\%n'
                  ]
          );
          // set a double status line
          this.statusLine('', 8,2); // just a line of strike
          this.statusLine(' +++ This is just a test sample for command parsing. Type "help" for help. +++');
          this.maxLines -= 2;
          // and leave with prompt
          this.prompt();
  }
  
  function commandHandler() {
          this.newLine();
          // check for raw mode first (should not be parsed)
          if (this.rawMode) {
                  if (this.env.getPassword) {
                          // sample password handler (lineBuffer == stored username ?)
                          if (this.lineBuffer == this.env.username) {
                                  this.user = this.env.username;
                                  this.ps = '['+this.user+']>';
                          }
                          else {
                                  this.type('Sorry.');
                          }
                          this.env.username = '';
                          this.env.getPassword = false;
                  }
                  // leave in normal mode
                  this.rawMode = false;
                  this.prompt();
                  return;
          }
          // normal command parsing
          // just call the termlib_parser with a reference of the calling Terminal instance
          // parsed arguments will be imported in this.argv,
          // quoting levels per argument in this.argQL (quoting character or empty)
          // cursor for arguments is this.argc (used by parserGetopt)
          // => see 'termlib_parse.js' for configuration and details
          parseLine(this);
          if (this.argv.length == 0) {
                  // no commmand line input
          }
          else if (this.argQL[0]) {
              // first argument quoted -> error
                  this.write("Syntax error: first argument quoted.");
          }
          else {
                  var cmd = this.argv[this.argc++];
                  /*
                    process commands now
                    1st argument: this.argv[this.argc]
  		*/
                  if (cmd == 'help') {
                          this.write(helpPage);
                  }
                  else if (cmd == 'clear') {
                          // get options
                          var opts = parserGetopt(this, 'aA');
                          if (opts.a) {
                                  // discard status line on opt "a" or "A"
                                  this.maxLines = this.conf.rows;
                          }
                          this.clear();
                  }
                  else if (cmd == 'number') {
                          // test for value options
                          var opts = parserGetopt(this, 'n');
                          if (opts.illegals.length) this.type('illegal option. usage: number -n<value>')
                          else if ((opts.n) && (opts.n.value != -1)) this.type('option value: '+opts.n.value)
                          else this.type('usage: number -n<value>');
                  }
                  else if (cmd == 'repeat') {
                          // another test for value options
                          var opts = parserGetopt(this, 'n');
                          if (opts.illegals.length) this.type('illegal option. usage: repeat -n<value> <string>')
                          else if ((opts.n) && (opts.n.value != -1)) {
                                  // first normal argument is again this.argv[this.argc]
                                  var s = this.argv[this.argc];
                                  if (typeof s != 'undefined') {
                                          // repeat this string n times
                                          var a = [];
                                          for (var i=0; i<opts.n.value; i++) a[a.length] = s;
                                          this.type(a.join(' '));
                                  }
                          }
                          else this.type('usage: repeat -n<value> <string>');
                  }
                  else if (cmd == 'login') {
                          // sample login (test for raw mode)
                          if ((this.argc == this.argv.length) || (this.argv[this.argc] == '')) {
                                  this.type('usage: login <username>');
                          }
                          else {
                                  this.env.getPassword = true;
                                  this.env.username = this.argv[this.argc];
                                  this.write('%+iSample login: repeat username as password.%-i\%n');
                                  this.type('password: ');
                                  // exit in raw mode (blind input)
                                  this.rawMode = true;
                                  this.lock = false;
                                  return;
                          }
                  }
                  else if (cmd == 'exit') {
                          this.close();
                          return;
                  }
                  else {
                          // for test purpose just output argv as list
                          // assemble a string of style-escaped lines and output it in more-mode
                          s=' INDEX  QL  ARGUMENT\%n';
                          for (var i=0; i<this.argv.length; i++) {
                                  s += this.globals.stringReplace('%', '%%',
                                                  this.globals.fillLeft(i, 6) +
                                                  this.globals.fillLeft((this.argQL[i])? this.argQL[i]:'-', 4) +
                                                  '  "' + this.argv[i] + '"'
                                          ) + '\%n';
                          }
                          this.write(s, 1);
                          return;
                  }
          }
          this.prompt();
  }
  
  //-->
  </script>
  
  <style type="text/css">
  body,p,a,td {
          font-family: courier,fixed,swiss,sans-serif;
          font-size: 12px;
          color: #cccccc;
  }
  .lh15 {
          line-height: 15px;
  }
  .term {
          font-family: courier,fixed,swiss,sans-serif;
          font-size: 12px;
          color: #33d011;
          background: none;
  }
  .termReverse {
          color: #111111;
          background: #33d011;
  }
  a,a:link,a:visited {
          text-decoration: none;
          color: #77dd11;
  }
  a:hover {
          text-decoration: underline;
          color: #77dd11;
  }
  a:active {
          text-decoration: underline;
          color: #dddddd;
  }
  
  a.termopen,a.termopen:link,a.termopen:visited {
          text-decoration: none;
          color: #77dd11;
          background: none;
  }
  a.termopen:hover {
          text-decoration: none;
          color: #222222;
          background: #77dd11;
  }
  a.termopen:active {
          text-decoration: none;
          color: #222222;
          background: #dddddd;
  }
  
  </style>
  </head>
  
  <body bgcolor="#222222" link="#77dd11" text="#cccccc" alink="#dddddd" vlink="#77dd11"
  topmargin="0" bottommargin="0" leftmargin="0" rightmargin="0" marginheight="0" marginwidth="0">
  
  <table border="0" cellspacing="20" cellpadding="0" align="center">
  <tr>
          <td nowrap><a href="index.html">termlib.js home</a></td>
          <td>|</td>
          <td nowrap><a href="multiterm_test.html">multiple terminals</a></td>
          <td>|</td>
          <td nowrap>parser</td>
          <td>|</td>
          <td nowrap><a href="faq.html">faq</a></td>
          <td>|</td>
          <td nowrap><a href="readme.txt" title="readme.txt (text/plain)">documentation</a></td>
          <td>|</td>
          <td nowrap><a href="samples.html">samples</a></td>
  </tr>
  </table>
  
  <table border="0" cellspacing="20" cellpadding="0">
          <tr><td nowrap>
                  Sample Parser Test<br>&nbsp;
          </td></tr>
          <tr><td nowrap>
                  <a href="javascript:termOpen()" onfocus="if(this.blur)this.blur();" onmouseover="window.status='terminal 1'; return true" onmouseout="window.status=''; return true" class="termopen">&gt; open terminal &nbsp;</a>
          </td></tr>
          <tr><td nowrap>
                  &nbsp;
          </td></tr>
          <tr><td nowrap class="lh15">
                  &nbsp;<br>
                  (c) mass:werk,<br>N. Landsteiner 2003-2005<br>
                  <a href="http://www.masswerk.at/" target="_blank">http://www.masswerk.at>
          </td></tr>
  </table>
  
  <div id="termDiv" style="position:absolute;"></div>
  
  </body>
  </html>
[] 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) _

(C) Æliens 04/09/2009

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