init commit

LICENSE

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+Copyright (c) 2009-2012 Dan Milon <[email protected]>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

README.md

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+# node-ical
+  Provides a streaming Parser for the iCalendar format as specified by [RFC2445](http://www.ietf.org/rfc/rfc2445.txt).
+
+## Quick Start
+    var Parser = require('ical').Parser,
+        fs     = require('fs');
+
+    var p = new Parser();
+    p.on('error', function (err) {
+        console.log(err);
+    });
+
+    p.on('end', function () {
+        console.log(p.calendars);
+    });
+
+    fs.createReadStream('file.ics').pipe(p);
+
+## License
+(The MIT License)
+
+Copyright (c) 2009-2012 Dan Milon <[email protected]>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the 'Software'), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

ical.js

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+module.exports = {
+  Parser: require('./lib/parser').Parser
+};

lib/parser.js

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+var Stream = require('stream').Stream,
+    util   = require('util');
+
+function Parser(opts) {
+  Stream.call(this);
+  this._stages = ['init'];
+  this.buffer = '';
+  this.writable = true;
+  this.calendars = [];
+  this._handles = [];
+}
+util.inherits(Parser, Stream);
+exports.Parser = Parser;
+
+Parser.parseLine = function (line) {
+  /*
+   * Here maybe we need to take into acount
+   * :'s in quotes also
+   */
+  var obj = { };
+  var valueSplitter = line.indexOf(':');
+  if (valueSplitter === -1) {
+    throw new Error('this line has no ":"!');
+  }
+  var paramSplitter = line.indexOf(';');
+  if (paramSplitter === -1) {
+    paramSplitter = valueSplitter + 1;
+  }
+  var haveParams = (paramSplitter < valueSplitter);
+  var nameSplitter = haveParams ? paramSplitter : valueSplitter;
+  obj.name = line.substr(0, nameSplitter).toLowerCase();
+  if (haveParams) {
+    var params = line.slice(paramSplitter + 1, valueSplitter);
+    params = params.split(';');
+    obj.params = { };
+    for (var i = 0; i < params.length; i++) {
+      params[i] = params[i].split('=');
+      var paramKey = params[i][0];
+      var paramValue = params[i][1];
+      obj.params[paramKey.toLowerCase()] = paramValue;
+    }
+  }
+  var value = line.substr(valueSplitter + 1);
+  obj.value = value;
+  return obj;
+};
+
+Parser.parseDateTime = function (dt, tzid) {
+  var year = parseInt(dt.slice(0, 4), 10);
+  var month = parseInt(dt.slice(4, 6), 10);
+  var day = parseInt(dt.slice(6, 8), 10);
+  var hours, minutes, seconds;
+  if (dt.length > 8) {
+    hours = parseInt(dt.slice(9, 11), 10);
+    minutes = parseInt(dt.slice(11, 13), 10);
+    seconds = parseInt(dt.slice(13, 15), 10);
+  }
+  else {
+    // then it is type 'date'
+    if ((year === NaN) || (month === NaN) || (day === NaN)) {
+      throw new Error('misformatted date' + dt);
+    }
+    return {
+      type: 'date',
+      date: new Date(year, month - 1, day)
+    };
+  }
+  if ((year === NaN) || (month === NaN) || (day === NaN)|| 
+      (hours === NaN) || (minutes === NaN || seconds === NaN)) {
+    // then some are NaN
+    throw new Error('misformatted date ' + dt);
+  }
+
+  var date = new Date(year, month - 1, day, hours, minutes, seconds);
+  if (dt.lastIndexOf('Z') === dt.length - 1) {
+    return {
+      type: 'utc',
+      date: date
+    };
+  }
+  else if (tzid) {
+    return {
+      type: 'utc+tzid',
+      tzid: tzid,
+      date: date
+    };
+  }
+  else {
+    return {
+      type: 'local',
+      date: date
+    };
+  }
+};
+
+Parser.prototype.write = function (data) {
+  var self = this;
+  if (data instanceof Buffer) {
+    data = data.toString();
+  }
+  data = data.replace(/\r\n[ \t]/g, '');
+  self.buffer += data;
+  process.nextTick(function () {
+    self._dispatch();
+  });
+};
+
+Parser.prototype._dispatch = function () {
+  /*
+   * Need to take into
+   * account \r\n in quotes here
+   */
+  var content = this.buffer.substr(0, this.buffer.lastIndexOf('\r\n'));
+  this.buffer = this.buffer.substr(2);
+  var contentLines = content.split('\r\n');
+  for (var i = 0; i < contentLines.length; i++) {
+    var line = contentLines[i];
+    line = Parser.parseLine(line);
+    var fn = this.handlers[line.name];
+    if (!fn) {
+      console.log('dont know how to handle ' + line.name + ' will use dummy handler');
+      this.handlers._onlyCopy.call(this, line);
+    }
+    else {
+      fn.call(this, line);
+    }
+  }
+};
+
+Parser.prototype.end = function () {
+  this.emit('end');
+};
+
+Parser.prototype.stage = function () {
+  return this._stages[this._stages.length - 1];
+};
+
+Parser.prototype._stripBuffer = function (end) {
+  this.buffer = this.buffer.substr(end.length);
+};
+
+Parser.prototype._error = function (err) {
+  if (this.listeners('error').length === 0) {
+    throw err;
+  }
+  else {
+    this.emit('error', err);
+  }
+};
+
+Parser.prototype._lastHandle = function () {
+  if (this._handles.length === 0) {
+    return this._error('no handles stored');
+  }
+  return this._handles[this._handles.length - 1];
+};
+
+Parser.prototype.handlers = { };
+
+Parser.prototype.handlers.begin = function (cmd) {
+  this._stages.push(cmd.value);
+  switch (cmd.value) {
+  case 'VCALENDAR':
+    var newCal = {
+      events: []
+    };
+    this._handles.push(newCal);
+    this.calendars.push(newCal);
+    break;
+  case 'VEVENT':
+    var newEvent = {
+      alarms: []
+    };
+    this._lastHandle().events.push(newEvent);
+    this._handles.push(newEvent);
+    break;
+  case 'VTIMEZONE':
+    break;
+  case 'VALARM':
+    var newAlarm = { };
+    this._lastHandle().alarms.push(newAlarm);
+    this._handles.push(newAlarm);
+    break;
+  default:
+    return this._error('dont know how to handle ' + cmd.value);
+  }
+};
+
+Parser.prototype.handlers.end = function (cmd) {
+  var value = this._stages.pop();
+  if (value !== cmd.value) {
+    return this._error(new Error('BEGINS and ENDS are fucked up'));
+  }
+  this._handles.pop();
+};
+
+var onlyCopy = Parser.prototype.handlers._onlyCopy = function (cmd) {
+  var handle = this._lastHandle();
+  var nameLower = cmd.name.toLowerCase();
+  if (typeof handle[nameLower] === 'undefined') {
+    if (cmd.params) {
+      this._lastHandle()[nameLower] = {
+        params: cmd.params,
+        value: cmd.value
+      };
+    }
+    else {
+      this._lastHandle()[cmd.name.toLowerCase()] = cmd.value;
+    }
+  }
+  else {
+    throw new Error(cmd.name + ' is already set');
+  }
+};
+
+Parser.prototype.handlers.prodid = onlyCopy;
+Parser.prototype.handlers.version = onlyCopy;
+Parser.prototype.handlers.calscale = onlyCopy;
+Parser.prototype.handlers.method = onlyCopy;
+Parser.prototype.handlers.uid = onlyCopy;
+
+Parser.prototype.handlers.dtstart = function (cmd) {
+  var tzid;
+  if (cmd.params && cmd.params.tzid) {
+    tzid = cmd.params.tzid;
+  }
+  var date = Parser.parseDateTime(cmd.value, tzid);
+  this._lastHandle().dtstart = date;
+};
+
+Parser.prototype.handlers.dtend = function (cmd) {
+  var tzid;
+  if (cmd.params && cmd.params.tzid) {
+    tzid = cmd.params.tzid;
+  }
+  var date = Parser.parseDateTime(cmd.value, tzid);
+  this._lastHandle().dtend = date;
+}
+
+Parser.prototype.handlers.dtstamp = function (cmd) {
+  var tzid;
+  if (cmd.params && cmd.params.tzid) {
+    tzid = cmd.params.tzid;
+  }
+  var date = Parser.parseDateTime(cmd.value, tzid);
+  this._lastHandle().dtstamp = date;
+}