file::type::webimages(3pm) [debian man page]
File::Type::WebImages(3pm) User Contributed Perl Documentation File::Type::WebImages(3pm) NAME
File::Type::WebImages - determine web image file types using magic SYNOPSIS
use File::Type::WebImages 'mime_type'; my $type_1 = mime_type($file); my $type_2 = mime_type($data); DESCRIPTION
"mime_type()" can use either a filename, or file contents, to determine the type of a file. The process involves looking the data at the beginning of the file, sometimes called "magic numbers". THE BIG TRADE OFF
For minimum memory consumption, only the following common web image file types are supported: BMP, GIF, JPEG and PNG. ( image/bmp, image/gif, image/jpeg and image/png ). Unlike with File::Type and File::MMagic, 'undef', not "application/octet-stream" will be returned for unknown formats. Unlike File::Type, we return "image/png" for PNGs, not "image/x-png"; If you want more mime types detected use File::Type or some other module. TODO
It would be even better to have a pluggable system that would allow you to plug-in different sets of MIME-types you care about. SEE ALSO
File::Type. Similar, but supports over 100 file types. ACKNOWLEDGMENTS
File::Type::WebImages is built from a mime-magic file from cleancode.org. The original can be found at <http://cleancode.org/cgi-bin/viewcvs.cgi/email/mime-magic.mime?rev=1.1.1.1>. AUTHORS
Paul Mison <pmison@fotango.com> - wrote original File::Type Mark Stosberg <mark@summersault.com> - hacked up this. COPYRIGHT
Copyright 2003-2004 Fotango Ltd. LICENSE
Licensed under the same terms as Perl itself. perl v5.10.1 2011-04-23 File::Type::WebImages(3pm)
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File::Type(3pm) User Contributed Perl Documentation File::Type(3pm) NAME
File::Type - determine file type using magic SYNOPSIS
my $ft = File::Type->new(); # read in data from file to $data, then my $type_from_data = $ft->checktype_contents($data); # alternatively, check file from disk my $type_from_file = $ft->checktype_filename($file); # convenient method for checking either a file or data my $type_1 = $ft->mime_type($file); my $type_2 = $ft->mime_type($data); DESCRIPTION
File::Type uses magic numbers (typically at the start of a file) to determine the MIME type of that file. File::Type can use either a filename, or file contents, to determine the type of a file. METHODS
new Returns a new File::Type object. mime_type($argument) Takes either data or a filename, determines what it is, and passes the argument through to the relevant method below. If the argument is a directory, returns undef. checktype_filename($filename) Opens $filename (if possible; if not, returns undef) and returns the MIME type of the file. checktype_contents($data) Matches $data against the magic database criteria and returns the MIME type of the file. TODO
* Add additional magic match criteria BUGS
None known. NOTES Some magic definitions in the mime-magic file used in the creation of this module vary from those in other apps (eg image/x-png not image/png). SEE ALSO
File::MMagic and File::MimeInfo perform the same job, but have a number of problems that led to the creation of this module. File::MMagic inlines a copy of the magic database, and uses a DATA filehandle, which causes problems when running under mod_perl. File::MimeInfo uses an external magic file, and relies on file extensions rather than magic to determine the mime type. As a result, File::Type uses a seperate module and script to create the code at the core of this module, which means that there is no need to include a magic database at all, and that it is safe to run under mod_perl. File::Type::Builder, which generates the code at the heart of this module. ACKNOWLEDGMENTS
File::Type is built from a mime-magic file from cleancode.org. The original can be found at <http://clean- code.org/cgi-bin/viewcvs.cgi/email/mime-magic.mime?rev=1.1.1.1>. AUTHOR
Paul Mison <pmison@fotango.com> COPYRIGHT
Copyright 2003-2004 Fotango Ltd. LICENSE
Licensed under the same terms as Perl itself. perl v5.8.8 2004-10-08 File::Type(3pm)