http.js - mozsearch

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-

 * This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

function CHTTPDoc (server, path)

    this.GET_TIMEOUT = 2 * 60; /* 2 minute timeout on gets */

    this.state = "new";

    this.server = server;

    this.path = path;

CHTTPDoc.prototype.get =

function http_get (ep)

    this.connection = new CBSConnection();

    if (!this.connection.connect (this.server, 80, (void 0), true))

        this.state = "connect-error";

        var e = new CEvent ("httpdoc", "complete", this, "onComplete");

        this.eventPump.addEvent (e);

        return false;

    this.eventPump = ep;

    this.state = "opened";

    this.data = "";

    this.duration = 0;

    var e = new CEvent ("httpdoc", "poll", this, "onPoll");

    this.eventPump.addEvent (e);

    this.connection.sendData ("GET " + this.path + "\n");

    this.startDate = new Date();

    return true;

CHTTPDoc.prototype.onPoll =

function http_poll (e)

    var line = "";

    var ex, c;

    var need_more = false;

    if (this.duration < this.GET_TIMEOUT)

try

            line = this.connection.readData (50);

            need_more = true;

            catch (ex)

            if (typeof (ex) == "undefined")

                line = "";

                need_more = true;

            else

                dd ("** Caught exception: '" + ex + "' while receiving " +

                    this.server + this.path);

                this.state = "read-error";

    else

        this.state = "receive-timeout";

    switch (this.state)

        case "opened":

        case "receive-header":

            if (this.state == "opened")

                this.headers = "";

            c = line.search(/\<html\>/i);

            if (c != -1)

                this.data = line.substr (c, line.length);

                this.state = "receive-data";

                line = line.substr (0, c);

                c = this.data.search(/\<\/html\>/i);

                if (c != -1)

                    this.docType = stringTrim(this.docType);

                    this.state = "complete";

                    need_more = false;

            this.headers += line;

            c = this.headers.search (/\<\!doctype/i);

            if (c != -1)

                this.docType = this.headers.substr (c, line.length);

                if (this.state == "opened")

                    this.state = "receive-doctype";

                this.headers = this.headers.substr (0, c);

            if (this.state == "opened")

                this.state = "receive-header";

            break;

        case "receive-doctype":

            var c = line.search (/\<html\>/i);

            if (c != -1)

                this.docType = stringTrim(this.docType);

                this.data = line.substr (c, line.length);

                this.state = "receive-data";

                line = line.substr (0, c);

            this.docType += line;

            break;

        case "receive-data":

            this.data += line;

            var c = this.data.search(/\<\/html\>/i);

            if (c != -1)

                this.state = "complete";

            break;

        case "read-error":

        case "receive-timeout":

            break;

        default:

            dd ("** INVALID STATE in HTTPDoc object (" + this.state + ") **");

            need_more = false;

            this.state = "error";

            break;

    if ((this.state != "complete") && (need_more))

        var e = new CEvent ("httpdoc", "poll", this, "onPoll");

    else

        this.connection.disconnect();

        if (this.data)

            var m = this.data.match(/\<title\>(.*)\<\/title\>/i);

            if (m != null)

                this.title = m[1];

            else

                this.title = "";

        var e = new CEvent ("httpdoc", "complete", this, "onComplete");

    this.eventPump.addEvent (e);

    this.duration = (new Date() - this.startDate) / 1000;

    return true;

CHTTPDoc.prototype.onComplete =

function http_complete(e)

    return true;