SYNOPSIS

use EBook::Tools::Unpack;
my $unpacker = EBook::Tools::Unpack->new(
'file' => $filename,
'dir' => $dir,
'encoding' => $encoding,
'format' => $format,
'raw' => $raw,
'author' => $author,
'title' => $title,
'opffile' => $opffile,
'tidy' => $tidy,
'nosave' => $nosave,
);
$unpacker->unpack;

or, more simply:

 use EBook::Tools::Unpack;
 my $unpacker = EBook::Tools::Unpack->new('file' => 'mybook.prc');
 $unpacker->unpack;

CONSTRUCTOR

new(%args)

Instantiates a new Ebook::Tools::Unpack object.

Arguments

• "file"

  The file to unpack. Specifying this is mandatory.

• "dir"

  The directory to unpack into. If not specified, defaults to the basename of the file.

• "encoding"

  If specified, overrides the encoding to use when unpacking. This is normally detected from the file and does not need to be specified.

  Valid values are '1252' (specifying Windows-1252) and '65001' (specifying UTF-8).

• "htmlconvert"

  If set to true, an attempt will be made to convert non-HTML output text to HTML where possible.

• "key"

  The decryption key to use if necessary (not yet implemented)

• "keyfile"

  The file holding the decryption keys to use if necessary (not yet implemented)

• "language"

  If specified, overrides the detected language information.

• "opffile"

  The name of the file in which the metadata will be stored. If not specified, defaults to "content.opf".

• "raw"

  If set true, this forces no corrections to be done on any extracted text and a lot of raw, unparsed, unmodified data to be dumped into the directory along with everything else. It's useful for debugging exactly what was in the file being unpacked, and (when combined with "nosave") reducing the time needed to extract parsed data from an ebook container without actually unpacking it.

• "author"

  Overrides the detected author name.

• "title"

  Overrides the detected title.

• "tidy"

  If set to true, the unpacker will run tidy on any HTML output files to convert them to valid XHTML. Be warned that this can occasionally change the formatting, as Tidy isn't very forgiving on certain common tricks (such as empty <pre> elements with style elements) that abuse the standard.

• "nosave"

  If set to true, the unpacker will run through all of the unpacking steps except those that actually write to the disk. This is useful for testing, but also (particularly when combined with "raw") can be used for extracting parsed data from an ebook container without actually unpacking it.

ACCESSOR METHODS

See ``new()'' for more details on what some of these mean. Note that some values cannot be autodetected until an unpack method executes.

author

dir

file

filebase

In scalar context, this is the basename of "file". In list context, it actually returns the basename, directory, and extension as per "fileparse" from File::Basename.

format

key

keyfile

language

This returns the language specified by the user, if any. It remains undefined if the user has not requested that a language code be set even if a language was autodetected.

opffile

raw

title

This returns the title specified by the user, if any. It remains undefined if the user has not requested a title be set even if a title was autodetected.

detected

This returns a hash containing the autodetected metadata, if any.

MODIFIER METHODS

detect_format()

Attempts to automatically detect the format of the input file and set the internal object attributes "$self->{format}" and "$self->{formatinfo}", where the former is a one-word string used by the dispatcher to select the correct unpacking method and the latter may contain additional detected information (such as a title or version).

Croaks if detection fails.

In scalar context, returns "$self->{format}". In list context, returns the two element list "($self->{format},$self->{formatinfo})"

This is automatically called by ``new()'' if the "format" argument is not specified.

detect_from_mobi_exth()

Detects metadata values from the MOBI EXTH headers retrieved via ``unpack_mobi_exth()'' and places them into the "detected" attribute.

gen_opf(%args)

This generates an OPF file from detected and specified metadata. It does not honor the "nosave" flag, and will always write its output.

Normally this is called automatically from inside the "unpack" methods, but can be called manually after an unpack if the "nosave" flag was set to write an OPF anyway.

Returns the filename of the OPF file.

Arguments

• "opffile" (optional)

  If specified, this overrides the object attribute "opffile", and determines the filename to use for the generated OPF file. If not specified, and the object attribute "opffile" has somehow been cleared (the attribute is set during ``new()''), it will be generated by looking at the "textfile" argument. If no value can be found, the method croaks. If a value was found somewhere other than the object attribute "opffile", then the object attribute is updated to match.

• "textfile" (optional)

  The file containing the main text of the document. If specified, the method will attempt to split metadata out of the file and add whatever remains to the manifest of the OPF.

• "mediatype" (optional)

  The media type (mime type) of the document specified via "textfile". If "textfile" is not specified, this argument is ignored. If "textfile" is specified, but

unpack()

This is a dispatcher for the specific unpacking methods needed to unpack a particular format. Unless you feel a need to override the unpacking method specified or detected during object construction, it is probalby better to call this than the specific unpacking methods.

unpack_ereader()

Unpacks Fictionwise/PeanutPress eReader (-er.pdb) files.

unpack_imp()

Unpacks SoftBook/GEB/REB/eBookWise (.imp) files.

unpack_mobi()

Unpacks Mobipocket (.prc / .mobi) files.

unpack_msreader()

Unpacks Microsoft Reader (.lit) files

unpack_palmdoc()

Unpacks PalmDoc / AportisDoc (.pdb) files

unpack_zip()

Unpacks Zip archives (including ePub files).

AUTHOR

Zed Pobre <[email protected]>

LICENSE AND COPYRIGHT

Copyright 2008 Zed Pobre

Licensed to the public under the terms of the GNU GPL, version 2