EpubResource

EpubResource class represents a resource file in an EPUB book, such as images, CSS, fonts, etc.

Constructor

public EpubResource()

Creates a new EpubResource instance.

public EpubResource(String href, String mediaType)

Creates a new EpubResource instance.

Parameters:

• href: Resource's href attribute
• mediaType: Resource's media type

public EpubResource(String id, String href, String mediaType, byte[] data)

Creates a new EpubResource instance.

Parameters:

• id: Resource ID
• href: Resource's href attribute
• mediaType: Resource's media type
• data: Resource data

Main Methods

getId()

public String getId()

Gets resource ID.

Returns:

• String: Resource ID

setId()

public void setId(String id)

Sets resource ID.

Parameters:

• id: Resource ID

getHref()

public String getHref()

Gets resource's href attribute.

Returns:

• String: Resource's href attribute

setHref()

public void setHref(String href)

Sets resource's href attribute.

Parameters:

• href: Resource's href attribute

getMediaType()

public String getMediaType()

Gets resource's media type.

Returns:

• String: Resource's media type (e.g., "image/jpeg", "text/css")

setMediaType()

public void setMediaType(String mediaType)

Sets resource's media type.

Parameters:

• mediaType: Resource's media type

getData()

public byte[] getData()

Gets resource data.

Returns:

• byte[]: Resource data

setData()

public void setData(byte[] data)

Sets resource data.

Parameters:

• data: Resource data

getFileName()

public String getFileName()

Gets resource filename (extracted from href).

Returns:

• String: Resource filename

getExtension()

public String getExtension()

Gets resource file extension.

Returns:

• String: Resource file extension (e.g., "jpg", "css")

getSize()

public long getSize()

Gets resource size (in bytes).

Returns:

• long: Resource size

isImage()

public boolean isImage()

Checks if resource is an image.

Returns:

• boolean: Returns true if resource is an image, otherwise false

isStylesheet()

public boolean isStylesheet()

Checks if resource is a stylesheet.

Returns:

• boolean: Returns true if resource is a stylesheet, otherwise false

isScript()

public boolean isScript()

Checks if resource is a script file.

Returns:

• boolean: Returns true if resource is a script file, otherwise false

isFont()

public boolean isFont()

Checks if resource is a font file.

Returns:

• boolean: Returns true if resource is a font file, otherwise false

isAudio()

public boolean isAudio()

Checks if resource is an audio file.

Returns:

• boolean: Returns true if resource is an audio file, otherwise false

isVideo()

public boolean isVideo()

Checks if resource is a video file.

Returns:

• boolean: Returns true if resource is a video file, otherwise false

saveToFile()

public void saveToFile(String filePath) throws EpubResourceException

Saves resource to file.

Parameters:

• filePath: Target file path

Throws:

• EpubResourceException: Error occurred during saving

saveToDirectory()

public void saveToDirectory(String directoryPath) throws EpubResourceException

Saves resource to specified directory.

Parameters:

• directoryPath: Target directory path

Throws:

• EpubResourceException: Error occurred during saving

toInputStream()

public InputStream toInputStream()

Converts resource data to input stream.

Returns:

• InputStream: Input stream of resource data

toBufferedImage()

public BufferedImage toBufferedImage() throws EpubResourceException

Converts image resource to BufferedImage object.

Returns:

• BufferedImage: BufferedImage object of image

Throws:

• EpubResourceException: Error occurred during conversion (if resource is not valid image)

toCSSDocument()

public String toCSSDocument() throws EpubResourceException

Converts CSS resource to string.

Returns:

• String: CSS content string

Throws:

• EpubResourceException: If resource is not CSS file

getMimeType()

public String getMimeType()

Gets resource's MIME type.

Returns:

• String: MIME type

isBinary()

public boolean isBinary()

Checks if resource is a binary file.

Returns:

• boolean: Returns true if resource is a binary file, otherwise false

getTextContent()

public String getTextContent() throws EpubResourceException

Gets text resource content.

Returns:

• String: Text content

Throws:

• EpubResourceException: If resource is not text file or reading fails

updateContent()

public void updateContent(String newContent) throws EpubResourceException

Updates text resource content.

Parameters:

• newContent: New text content

Throws:

• EpubResourceException: If resource is not text file or update fails

getAbsolutePath()

public String getAbsolutePath()

Gets resource's absolute path.

Returns:

• String: Resource's absolute path

getRelativePath()

public String getRelativePath(String basePath)

Gets resource's relative path to specified base path.

Parameters:

• basePath: Base path

Returns:

• String: Relative path

isValid()

public boolean isValid()

Checks if resource is valid (has valid href and media type).

Returns:

• boolean: Returns true if resource is valid, otherwise false

toString()

public String toString()

Returns string representation of resource.

Returns:

• String: String representation of resource