includes/clientside/static/template-compiler.js
author Dan
Sat, 25 Aug 2007 12:11:31 -0400
changeset 98 6457a9b983c6
parent 1 fe660c52c48f
child 212 30b857a6b811
permissions -rw-r--r--
Fixed non-object reference in databaseless template, added locking for Javascript paginator, made comments on AES key size more clear in constants, and disallowed "anonymous" and IP addresses for admin username in install.php; Loch Ness release candidate

// An implementation of Enano's template compiler in Javascript. Same exact API
// as the PHP version - constructor accepts text, then the assign_vars, assign_bool, and run methods.

function templateParser(text)
{
  this.tpl_code    = text;
  this.tpl_strings = new Object();
  this.tpl_bool    = new Object();
  this.assign_vars = __tpAssignVars;
  this.assign_bool = __tpAssignBool;
  this.run         = __tpRun;
}

function __tpAssignVars(vars)
{
  for(var i in vars)
  {
    this.tpl_strings[i] = vars[i];
  }
}

function __tpAssignBool(vars)
{
  for(var i in vars)
  {
    this.tpl_bool[i] = ( vars[i] ) ? true : false; 
  }
}

function __tpRun()
{
  if(typeof(this.tpl_code) == 'string')
  {
    tpl_code = __tpCompileTemplate(this.tpl_code);
    try {
      compiled = eval(tpl_code);
    }
    catch(e)
    {
      alert(e);
      aclDebug(tpl_code);
    }
    return compiled;
  }
  return false;
}

function __tpCompileTemplate(code)
{
  // Compile plaintext/template code to javascript code
  code = code.replace(/\\/g, "\\\\");
  code = code.replace(/\'/g,  "\\'");
  code = code.replace(/\"/g,  '\\"');
  code = code.replace(new RegExp(unescape('%0A'), 'g'), '\\n');
  code = "'" + code + "'";
  code = code.replace(/\{([A-z0-9_-]+)\}/ig, "' + this.tpl_strings['$1'] + '");
  code = code.replace(/\<!-- BEGIN ([A-z0-9_-]+) --\>([\s\S]*?)\<!-- BEGINELSE \1 --\>([\s\S]*?)\<!-- END \1 --\>/ig, "' + ( ( this.tpl_bool['$1'] == true ) ? '$2' : '$3' ) + '");
  code = code.replace(/\<!-- BEGIN ([A-z0-9_-]+) --\>([\s\S]*?)\<!-- END \1 --\>/ig, "' + ( ( this.tpl_bool['$1'] == true ) ? '$2' : '' ) + '");
  return code;
}

function __tpExtractVars(code)
{
  code = code.replace('\\', "\\\\");
  code = code.replace("'",  "\\'");
  code = code.replace('"',  '\\"');
  code = code.replace(new RegExp(unescape('%0A'), 'g'), "\\n");
  code = code.match(/\<!-- VAR ([A-z0-9_-]+) --\>([\s\S]*?)\<!-- ENDVAR \1 -->/g);
  code2 = '';
  for(var i in code)
    if(typeof(code[i]) == 'string')
      code2 = code2 + code[i];
  code = code2.replace(/\<!-- VAR ([A-z0-9_-]+) --\>([\s\S]*?)\<!-- ENDVAR \1 -->/g, "'$1' : \"$2\",");
  code = '( { ' + code + ' "________null________" : false } )';
  vars = eval(code);
  return vars;
}