Class OutputDataParser

java.lang.Object

OutputDataParser

public class OutputDataParser
extends java.lang.Object

OutputDataParser is a parser that takes the data sent from the client over a socket along with the directory to search for files in and parses it into an output data container which will contain the data necessary to answer the client request, i.e., a header and the file, if found.

Author:

tm11ajn

Field Summary

Fields

Modifier and Type	Field and Description
(package private) FileInfo	fileInfo
(package private) OutputData	outputData
(package private) Request	request

Constructor Summary

Constructors

Constructor and Description
OutputDataParser()

Method Summary

Methods

Modifier and Type	Method and Description
private FileInfo	checkFile(Header header, java.io.File directory, java.lang.String uri) Checks the file requested by the client and sets the status code in the input header according to the findings.
private int	checkRequest(Header header) Checks the request content and validity and modifies the header's status code according to the findings.
private java.lang.String	extractFileExtension(java.lang.String uri) Extracts the file extension from a URI.
private java.lang.String	fileExtensionToContentType(java.lang.String fileExtension) Translates the input file extension into a content type.
OutputData	parse(java.lang.String clientData, java.io.File directory) Parses input client data into an output data container containing a suitable answer to the good/bad request in the form of a header and a possible file, depending on the request.
private Request	parseClientData(java.lang.String clientData) Parses the string received from the client into a request container.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

outputData

OutputData outputData

request

Request request

fileInfo

FileInfo fileInfo

Constructor Detail

OutputDataParser

public OutputDataParser()

Method Detail

parseClientData

private Request parseClientData(java.lang.String clientData)

Parses the string received from the client into a request container. If the input string turns out not to be a proper HTTP request since it has the wrong number of words, then the request is marked to be not valid.

Parameters:

clientData: - String - The client data (the request in string format).

Returns:

Request - The request parsed from the input string.

checkRequest

private int checkRequest(Header header)

Checks the request content and validity and modifies the header's status code according to the findings. If the request turns out to be bad, the return value of this method will indicate that.

Parameters:

header: - Header - The header to be modified.

Returns:

int: -1 if the request is bad, 1 if it can be handled.

extractFileExtension

private java.lang.String extractFileExtension(java.lang.String uri)

Extracts the file extension from a URI.

Parameters:

uri: - String - The input URI.

Returns:

String - The file extension.

checkFile

private FileInfo checkFile(Header header,
                 java.io.File directory,
                 java.lang.String uri)

Checks the file requested by the client and sets the status code in the input header according to the findings.

Parameters:

header: - Header - The header to be modified.

directory: - File - The start directory.

uri: - String - The URI.

Returns:

FileInfo - The file along with information about it.

fileExtensionToContentType

private java.lang.String fileExtensionToContentType(java.lang.String fileExtension)

Translates the input file extension into a content type. If the input file extension was not any of the below, text/plain is used as default.

Parameters:

fileExtension: - String - The file extension to be translated.

Returns:

String - The content type (mime type).

parse

public OutputData parse(java.lang.String clientData,
               java.io.File directory)

Parses input client data into an output data container containing a suitable answer to the good/bad request in the form of a header and a possible file, depending on the request.

Parameters:

clientData: - String - The input client data.

directory: - File - The start directory.

Returns:

OutputData - The output data.