.it

#! /usr/bin/env node
// vim:ft=javascript


// doT.js
// 2011, Laura Doktorova, https://github.com/olado/doT
// Licensed under the MIT license.

var dot = (function() {
  "use strict";

  var doT = {
    version: '1.0.1',
    templateSettings: {
      evaluate:    /\{\{([\s\S]+?(\}?)+)\}\}/g,
      interpolate: /\{\{=([\s\S]+?)\}\}/g,
      encode:      /\{\{!([\s\S]+?)\}\}/g,
      use:         /\{\{#([\s\S]+?)\}\}/g,
      useParams:   /(^|[^\w$])def(?:\.|\[[\'\"])([\w$\.]+)(?:[\'\"]\])?\s*\:\s*([\w$\.]+|\"[^\"]+\"|\'[^\']+\'|\{[^\}]+\})/g,
      define:      /\{\{##\s*([\w\.$]+)\s*(\:|=)([\s\S]+?)#\}\}/g,
      defineParams:/^\s*([\w$]+):([\s\S]+)/,
      conditional: /\{\{\?(\?)?\s*([\s\S]*?)\s*\}\}/g,
      iterate:     /\{\{~\s*(?:\}\}|([\s\S]+?)\s*\:\s*([\w$]+)\s*(?:\:\s*([\w$]+))?\s*\}\})/g,
      varname:  'it',
      strip:    true,
      append:   true,
      selfcontained: false
    },
    template: undefined, //fn, compile template
    compile:  undefined  //fn, for express
  }, global;

  if (typeof module !== 'undefined' && module.exports) {
    module.exports = doT;
  } else if (typeof define === 'function' && define.amd) {
    define(function(){return doT;});
  } else {
    global = (function(){ return this || (0,eval)('this'); }());
    global.doT = doT;
  }

  function encodeHTMLSource() {
    var encodeHTMLRules = { "&": "&#38;", "<": "&#60;", ">": "&#62;", '"': '&#34;', "'": '&#39;', "/": '&#47;' },
      matchHTML = /&(?!#?\w+;)|<|>|"|'|\//g;
    return function() {
      return this ? this.replace(matchHTML, function(m) {return encodeHTMLRules[m] || m;}) : this;
    };
  }
  String.prototype.encodeHTML = encodeHTMLSource();

  var startend = {
    append: { start: "'+(",      end: ")+'",      endencode: "||'').toString().encodeHTML()+'" },
    split:  { start: "';out+=(", end: ");out+='", endencode: "||'').toString().encodeHTML();out+='"}
  }, skip = /$^/;

  function resolveDefs(c, block, def) {
    return ((typeof block === 'string') ? block : block.toString())
    .replace(c.define || skip, function(m, code, assign, value) {
      if (code.indexOf('def.') === 0) {
        code = code.substring(4);
      }
      if (!(code in def)) {
        if (assign === ':') {
          if (c.defineParams) value.replace(c.defineParams, function(m, param, v) {
            def[code] = {arg: param, text: v};
          });
          if (!(code in def)) def[code]= value;
        } else {
          new Function("def", "def['"+code+"']=" + value)(def);
        }
      }
      return '';
    })
    .replace(c.use || skip, function(m, code) {
      if (c.useParams) code = code.replace(c.useParams, function(m, s, d, param) {
        if (def[d] && def[d].arg && param) {
          var rw = (d+":"+param).replace(/'|\\/g, '_');
          def.__exp = def.__exp || {};
          def.__exp[rw] = def[d].text.replace(new RegExp("(^|[^\\w$])" + def[d].arg + "([^\\w$])", "g"), "$1" + param + "$2");
          return s + "def.__exp['"+rw+"']";
        }
      });
      var v = new Function("def", "return " + code)(def);
      return v ? resolveDefs(c, v, def) : v;
    });
  }

  function unescape(code) {
    return code.replace(/\\('|\\)/g, "$1").replace(/[\r\t\n]/g, ' ');
  }

  doT.template = function(tmpl, c, def) {
    c = c || doT.templateSettings;
    var cse = c.append ? startend.append : startend.split, needhtmlencode, sid = 0, indv,
      str  = (c.use || c.define) ? resolveDefs(c, tmpl, def || {}) : tmpl;

    str = ("var out='" + (c.strip ? str.replace(/(^|\r|\n)\t* +| +\t*(\r|\n|$)/g,' ')
          .replace(/\r|\n|\t|\/\*[\s\S]*?\*\//g,''): str)
      .replace(/'|\\/g, '\\$&')
      .replace(c.interpolate || skip, function(m, code) {
        return cse.start + unescape(code) + cse.end;
      })
      .replace(c.encode || skip, function(m, code) {
        needhtmlencode = true;
        return cse.start + unescape(code) + cse.endencode;
      })
      .replace(c.conditional || skip, function(m, elsecase, code) {
        return elsecase ?
          (code ? "';}else if(" + unescape(code) + "){out+='" : "';}else{out+='") :
          (code ? "';if(" + unescape(code) + "){out+='" : "';}out+='");
      })
      .replace(c.iterate || skip, function(m, iterate, vname, iname) {
        if (!iterate) return "';} } out+='";
        sid+=1; indv=iname || "i"+sid; iterate=unescape(iterate);
        return "';var arr"+sid+"="+iterate+";if(arr"+sid+"){var "+vname+","+indv+"=-1,l"+sid+"=arr"+sid+".length-1;while("+indv+"<l"+sid+"){"
          +vname+"=arr"+sid+"["+indv+"+=1];out+='";
      })
      .replace(c.evaluate || skip, function(m, code) {
        return "';" + unescape(code) + "out+='";
      })
      + "';return out;")
      .replace(/\n/g, '\\n').replace(/\t/g, '\\t').replace(/\r/g, '\\r')
      .replace(/(\s|;|\}|^|\{)out\+='';/g, '$1').replace(/\+''/g, '')
      .replace(/(\s|;|\}|^|\{)out\+=''\+/g,'$1out+=');

    if (needhtmlencode && c.selfcontained) {
      str = "String.prototype.encodeHTML=(" + encodeHTMLSource.toString() + "());" + str;
    }
    try {
      return new Function(c.varname, str);
    } catch (e) {
      if (typeof console !== 'undefined') console.log("Could not create a template function: " + str);
      throw e;
    }
  };

  doT.compile = function(tmpl, def) {
    return doT.template(tmpl, null, def);
  };
  return doT;
}());

var fs = require('fs');
var content = '';
var fileName = process.argv[2];

if ( !fileName ){
  console.log("you must provide a template file name");
  process.exit(1);
}

process.stdin.setEncoding('utf8');
process.stdin.resume();
process.stdin.on('data', function(buf) { content += buf.toString(); });
process.stdin.on('end', function() {
  var context = JSON.parse(content);  
  var template = fs.readFileSync(fileName);
  dot.templateSettings.strip = false;
  var templateFunction = dot.template(template);
  console.log(templateFunction(context));
});