magic

package
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Published: Apr 12, 2022 License: MIT Imports: 11 Imported by: 0

Documentation

Overview

Package magic holds the matching functions used to find MIME types.

Index

Constants

This section is empty.

Variables

View Source
var (
	// SevenZ matches a 7z archive.
	SevenZ = prefix([]byte{0x37, 0x7A, 0xBC, 0xAF, 0x27, 0x1C})
	// Gzip matches gzip files based on http://www.zlib.org/rfc-gzip.html#header-trailer.
	Gzip = prefix([]byte{0x1f, 0x8b})
	// Fits matches an Flexible Image Transport System file.
	Fits = prefix([]byte{
		0x53, 0x49, 0x4D, 0x50, 0x4C, 0x45, 0x20, 0x20, 0x3D, 0x20,
		0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
		0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x54,
	})
	// Xar matches an eXtensible ARchive format file.
	Xar = prefix([]byte{0x78, 0x61, 0x72, 0x21})
	// Bz2 matches a bzip2 file.
	Bz2 = prefix([]byte{0x42, 0x5A, 0x68})
	// Ar matches an ar (Unix) archive file.
	Ar = prefix([]byte{0x21, 0x3C, 0x61, 0x72, 0x63, 0x68, 0x3E})
	// Deb matches a Debian package file.
	Deb = offset([]byte{
		0x64, 0x65, 0x62, 0x69, 0x61, 0x6E, 0x2D,
		0x62, 0x69, 0x6E, 0x61, 0x72, 0x79,
	}, 8)
	// Warc matches a Web ARChive file.
	Warc = prefix([]byte("WARC/1.0"), []byte("WARC/1.1"))
	// Cab matches a Cabinet archive file.
	Cab = prefix([]byte("MSCF\x00\x00\x00\x00"))
	// Xz matches an xz compressed stream based on https://tukaani.org/xz/xz-file-format.txt.
	Xz = prefix([]byte{0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00})
	// Lzip matches an Lzip compressed file.
	Lzip = prefix([]byte{0x4c, 0x5a, 0x49, 0x50})
	// RPM matches an RPM or Delta RPM package file.
	RPM = prefix([]byte{0xed, 0xab, 0xee, 0xdb}, []byte("drpm"))
	// Cpio matches a cpio archive file.
	Cpio = prefix([]byte("070707"), []byte("070701"), []byte("070702"))
	// RAR matches a RAR archive file.
	RAR = prefix([]byte("Rar!\x1A\x07\x00"), []byte("Rar!\x1A\x07\x01\x00"))
)
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var (
	// Flac matches a Free Lossless Audio Codec file.
	Flac = prefix([]byte("\x66\x4C\x61\x43\x00\x00\x00\x22"))
	// Midi matches a Musical Instrument Digital Interface file.
	Midi = prefix([]byte("\x4D\x54\x68\x64"))
	// Ape matches a Monkey's Audio file.
	Ape = prefix([]byte("\x4D\x41\x43\x20\x96\x0F\x00\x00\x34\x00\x00\x00\x18\x00\x00\x00\x90\xE3"))
	// MusePack matches a Musepack file.
	MusePack = prefix([]byte("MPCK"))
	// Au matches a Sun Microsystems au file.
	Au = prefix([]byte("\x2E\x73\x6E\x64"))
	// Amr matches an Adaptive Multi-Rate file.
	Amr = prefix([]byte("\x23\x21\x41\x4D\x52"))
	// Voc matches a Creative Voice file.
	Voc = prefix([]byte("Creative Voice File"))
	// M3u matches a Playlist file.
	M3u = prefix([]byte("#EXTM3U"))
	// AAC matches an Advanced Audio Coding file.
	AAC = prefix([]byte{0xFF, 0xF1}, []byte{0xFF, 0xF9})
)
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var (
	// Lnk matches Microsoft lnk binary format.
	Lnk = prefix([]byte{0x4C, 0x00, 0x00, 0x00, 0x01, 0x14, 0x02, 0x00})
	// Wasm matches a web assembly File Format file.
	Wasm = prefix([]byte{0x00, 0x61, 0x73, 0x6D})
	// Exe matches a Windows/DOS executable file.
	Exe = prefix([]byte{0x4D, 0x5A})
	// Elf matches an Executable and Linkable Format file.
	Elf = prefix([]byte{0x7F, 0x45, 0x4C, 0x46})
	// Nes matches a Nintendo Entertainment system ROM file.
	Nes = prefix([]byte{0x4E, 0x45, 0x53, 0x1A})
	// SWF matches an Adobe Flash swf file.
	SWF = prefix([]byte("CWS"), []byte("FWS"), []byte("ZWS"))
	// Torrent has bencoded text in the beginning.
	Torrent = prefix([]byte("d8:announce"))
)
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var (
	// Sqlite matches an SQLite database file.
	Sqlite = prefix([]byte{
		0x53, 0x51, 0x4c, 0x69, 0x74, 0x65, 0x20, 0x66,
		0x6f, 0x72, 0x6d, 0x61, 0x74, 0x20, 0x33, 0x00,
	})
	// MsAccessAce matches Microsoft Access dababase file.
	MsAccessAce = offset([]byte("Standard ACE DB"), 4)
	// MsAccessMdb matches legacy Microsoft Access database file (JET, 2003 and earlier).
	MsAccessMdb = offset([]byte("Standard Jet DB"), 4)
)
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var (
	// Pdf matches a Portable Document Format file.
	Pdf = prefix([]byte{0x25, 0x50, 0x44, 0x46})
	// Fdf matches a Forms Data Format file.
	Fdf = prefix([]byte("%FDF"))
	// Mobi matches a Mobi file.
	Mobi = offset([]byte("BOOKMOBI"), 60)
	// Lit matches a Microsoft Lit file.
	Lit = prefix([]byte("ITOLITLS"))
)
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var (
	// Woff matches a Web Open Font Format file.
	Woff = prefix([]byte("wOFF"))
	// Woff2 matches a Web Open Font Format version 2 file.
	Woff2 = prefix([]byte("wOF2"))
	// Otf matches an OpenType font file.
	Otf = prefix([]byte{0x4F, 0x54, 0x54, 0x4F, 0x00})
)
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var (
	// AVIF matches an AV1 Image File Format still or animated.
	// Wikipedia page seems outdated listing image/avif-sequence for animations.
	// https://github.com/AOMediaCodec/av1-avif/issues/59
	AVIF = ftyp([]byte("avif"), []byte("avis"))
	// Mp4 matches an MP4 file.
	Mp4 = ftyp(
		[]byte("avc1"), []byte("dash"), []byte("iso2"), []byte("iso3"),
		[]byte("iso4"), []byte("iso5"), []byte("iso6"), []byte("isom"),
		[]byte("mmp4"), []byte("mp41"), []byte("mp42"), []byte("mp4v"),
		[]byte("mp71"), []byte("MSNV"), []byte("NDAS"), []byte("NDSC"),
		[]byte("NSDC"), []byte("NSDH"), []byte("NDSM"), []byte("NDSP"),
		[]byte("NDSS"), []byte("NDXC"), []byte("NDXH"), []byte("NDXM"),
		[]byte("NDXP"), []byte("NDXS"), []byte("F4V "), []byte("F4P "),
	)
	// ThreeGP matches a 3GPP file.
	ThreeGP = ftyp(
		[]byte("3gp1"), []byte("3gp2"), []byte("3gp3"), []byte("3gp4"),
		[]byte("3gp5"), []byte("3gp6"), []byte("3gp7"), []byte("3gs7"),
		[]byte("3ge6"), []byte("3ge7"), []byte("3gg6"),
	)
	// ThreeG2 matches a 3GPP2 file.
	ThreeG2 = ftyp(
		[]byte("3g24"), []byte("3g25"), []byte("3g26"), []byte("3g2a"),
		[]byte("3g2b"), []byte("3g2c"), []byte("KDDI"),
	)
	// AMp4 matches an audio MP4 file.
	AMp4 = ftyp(

		[]byte("F4A "), []byte("F4B "),

		[]byte("M4B "), []byte("M4P "),

		[]byte("MSNV"),

		[]byte("NDAS"),
	)
	// QuickTime matches a QuickTime File Format file.
	QuickTime = ftyp([]byte("qt  "), []byte("moov"))
	// Mqv matches a Sony / Mobile QuickTime  file.
	Mqv = ftyp([]byte("mqt "))
	// M4a matches an audio M4A file.
	M4a = ftyp([]byte("M4A "))
	// M4v matches an Appl4 M4V video file.
	M4v = ftyp([]byte("M4V "), []byte("M4VH"), []byte("M4VP"))
	// Heic matches a High Efficiency Image Coding (HEIC) file.
	Heic = ftyp([]byte("heic"), []byte("heix"))
	// HeicSequence matches a High Efficiency Image Coding (HEIC) file sequence.
	HeicSequence = ftyp([]byte("hevc"), []byte("hevx"))
	// Heif matches a High Efficiency Image File Format (HEIF) file.
	Heif = ftyp([]byte("mif1"), []byte("heim"), []byte("heis"), []byte("avic"))
	// HeifSequence matches a High Efficiency Image File Format (HEIF) file sequence.
	HeifSequence = ftyp([]byte("msf1"), []byte("hevm"), []byte("hevs"), []byte("avcs"))
)
View Source
var (
	// Png matches a Portable Network Graphics file.
	// https://www.w3.org/TR/PNG/
	Png = prefix([]byte{0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A})
	// Apng matches an Animated Portable Network Graphics file.
	// https://wiki.mozilla.org/APNG_Specification
	Apng = offset([]byte("acTL"), 37)
	// Jpg matches a Joint Photographic Experts Group file.
	Jpg = prefix([]byte{0xFF, 0xD8, 0xFF})
	// Jp2 matches a JPEG 2000 Image file (ISO 15444-1).
	Jp2 = jpeg2k([]byte{0x6a, 0x70, 0x32, 0x20})
	// Jpx matches a JPEG 2000 Image file (ISO 15444-2).
	Jpx = jpeg2k([]byte{0x6a, 0x70, 0x78, 0x20})
	// Jpm matches a JPEG 2000 Image file (ISO 15444-6).
	Jpm = jpeg2k([]byte{0x6a, 0x70, 0x6D, 0x20})
	// Gif matches a Graphics Interchange Format file.
	Gif = prefix([]byte("GIF87a"), []byte("GIF89a"))
	// Bmp matches a bitmap image file.
	Bmp = prefix([]byte{0x42, 0x4D})
	// Ps matches a PostScript file.
	Ps = prefix([]byte("%!PS-Adobe-"))
	// Psd matches a Photoshop Document file.
	Psd = prefix([]byte("8BPS"))
	// Ico matches an ICO file.
	Ico = prefix([]byte{0x00, 0x00, 0x01, 0x00}, []byte{0x00, 0x00, 0x02, 0x00})
	// Icns matches an ICNS (Apple Icon Image format) file.
	Icns = prefix([]byte("icns"))
	// Tiff matches a Tagged Image File Format file.
	Tiff = prefix([]byte{0x49, 0x49, 0x2A, 0x00}, []byte{0x4D, 0x4D, 0x00, 0x2A})
	// Bpg matches a Better Portable Graphics file.
	Bpg = prefix([]byte{0x42, 0x50, 0x47, 0xFB})
	// Xcf matches GIMP image data.
	Xcf = prefix([]byte("gimp xcf"))
	// Pat matches GIMP pattern data.
	Pat = offset([]byte("GPAT"), 20)
	// Gbr matches GIMP brush data.
	Gbr = offset([]byte("GIMP"), 20)
	// Hdr matches Radiance HDR image.
	// https://web.archive.org/web/20060913152809/http://local.wasp.uwa.edu.au/~pbourke/dataformats/pic/
	Hdr = prefix([]byte("#?RADIANCE\n"))
	// Xpm matches X PixMap image data.
	Xpm = prefix([]byte{0x2F, 0x2A, 0x20, 0x58, 0x50, 0x4D, 0x20, 0x2A, 0x2F})
)
View Source
var (
	// HTML matches a Hypertext Markup Language file.
	HTML = markup(
		[]byte("<!DOCTYPE HTML"),
		[]byte("<HTML"),
		[]byte("<HEAD"),
		[]byte("<SCRIPT"),
		[]byte("<IFRAME"),
		[]byte("<H1"),
		[]byte("<DIV"),
		[]byte("<FONT"),
		[]byte("<TABLE"),
		[]byte("<A"),
		[]byte("<STYLE"),
		[]byte("<TITLE"),
		[]byte("<B"),
		[]byte("<BODY"),
		[]byte("<BR"),
		[]byte("<P"),
	)
	// XML matches an Extensible Markup Language file.
	XML = markup([]byte("<?XML"))
	// Owl2 matches an Owl ontology file.
	Owl2 = xml(newXMLSig("Ontology", `xmlns="http://www.w3.org/2002/07/owl#"`))
	// Rss matches a Rich Site Summary file.
	Rss = xml(newXMLSig("rss", ""))
	// Atom matches an Atom Syndication Format file.
	Atom = xml(newXMLSig("feed", `xmlns="http://www.w3.org/2005/Atom"`))
	// Kml matches a Keyhole Markup Language file.
	Kml = xml(
		newXMLSig("kml", `xmlns="http://www.opengis.net/kml/2.2"`),
		newXMLSig("kml", `xmlns="http://earth.google.com/kml/2.0"`),
		newXMLSig("kml", `xmlns="http://earth.google.com/kml/2.1"`),
		newXMLSig("kml", `xmlns="http://earth.google.com/kml/2.2"`),
	)
	// Xliff matches a XML Localization Interchange File Format file.
	Xliff = xml(newXMLSig("xliff", `xmlns="urn:oasis:names:tc:xliff:document:1.2"`))
	// Collada matches a COLLAborative Design Activity file.
	Collada = xml(newXMLSig("COLLADA", `xmlns="http://www.collada.org/2005/11/COLLADASchema"`))
	// Gml matches a Geography Markup Language file.
	Gml = xml(
		newXMLSig("", `xmlns:gml="http://www.opengis.net/gml"`),
		newXMLSig("", `xmlns:gml="http://www.opengis.net/gml/3.2"`),
		newXMLSig("", `xmlns:gml="http://www.opengis.net/gml/3.3/exr"`),
	)
	// Gpx matches a GPS Exchange Format file.
	Gpx = xml(newXMLSig("gpx", `xmlns="http://www.topografix.com/GPX/1/1"`))
	// Tcx matches a Training Center XML file.
	Tcx = xml(newXMLSig("TrainingCenterDatabase", `xmlns="http://www.garmin.com/xmlschemas/TrainingCenterDatabase/v2"`))
	// X3d matches an Extensible 3D Graphics file.
	X3d = xml(newXMLSig("X3D", `xmlns:xsd="http://www.w3.org/2001/XMLSchema-instance"`))
	// Amf matches an Additive Manufacturing XML file.
	Amf = xml(newXMLSig("amf", ""))
	// Threemf matches a 3D Manufacturing Format file.
	Threemf = xml(newXMLSig("model", `xmlns="http://schemas.microsoft.com/3dmanufacturing/core/2015/02"`))
	// Xfdf matches a XML Forms Data Format file.
	Xfdf = xml(newXMLSig("xfdf", `xmlns="http://ns.adobe.com/xfdf/"`))
	// VCard matches a Virtual Contact File.
	VCard = ciPrefix([]byte("BEGIN:VCARD\n"), []byte("BEGIN:VCARD\r\n"))
	// ICalendar matches a iCalendar file.
	ICalendar = ciPrefix([]byte("BEGIN:VCALENDAR\n"), []byte("BEGIN:VCALENDAR\r\n"))

	// Js matches a Javascript file.
	Js = shebang(
		[]byte("/bin/node"),
		[]byte("/usr/bin/node"),
		[]byte("/bin/nodejs"),
		[]byte("/usr/bin/nodejs"),
		[]byte("/usr/bin/env node"),
		[]byte("/usr/bin/env nodejs"),
	)
	// Lua matches a Lua programming language file.
	Lua = shebang(
		[]byte("/usr/bin/lua"),
		[]byte("/usr/local/bin/lua"),
		[]byte("/usr/bin/env lua"),
	)
	// Perl matches a Perl programming language file.
	Perl = shebang(
		[]byte("/usr/bin/perl"),
		[]byte("/usr/bin/env perl"),
	)
	// Python matches a Python programming language file.
	Python = shebang(
		[]byte("/usr/bin/python"),
		[]byte("/usr/local/bin/python"),
		[]byte("/usr/bin/env python"),
	)
	// Tcl matches a Tcl programming language file.
	Tcl = shebang(
		[]byte("/usr/bin/tcl"),
		[]byte("/usr/local/bin/tcl"),
		[]byte("/usr/bin/env tcl"),
		[]byte("/usr/bin/tclsh"),
		[]byte("/usr/local/bin/tclsh"),
		[]byte("/usr/bin/env tclsh"),
		[]byte("/usr/bin/wish"),
		[]byte("/usr/local/bin/wish"),
		[]byte("/usr/bin/env wish"),
	)
	// Rtf matches a Rich Text Format file.
	Rtf = prefix([]byte("{\\rtf1"))
)
View Source
var (
	// Flv matches a Flash video file.
	Flv = prefix([]byte("\x46\x4C\x56\x01"))
	// Asf matches an Advanced Systems Format file.
	Asf = prefix([]byte{
		0x30, 0x26, 0xB2, 0x75, 0x8E, 0x66, 0xCF, 0x11,
		0xA6, 0xD9, 0x00, 0xAA, 0x00, 0x62, 0xCE, 0x6C,
	})
	// Rmvb matches a RealMedia Variable Bitrate file.
	Rmvb = prefix([]byte{0x2E, 0x52, 0x4D, 0x46})
)
View Source
var (
	// Odt matches an OpenDocument Text file.
	Odt = offset([]byte("mimetypeapplication/vnd.oasis.opendocument.text"), 30)
	// Ott matches an OpenDocument Text Template file.
	Ott = offset([]byte("mimetypeapplication/vnd.oasis.opendocument.text-template"), 30)
	// Ods matches an OpenDocument Spreadsheet file.
	Ods = offset([]byte("mimetypeapplication/vnd.oasis.opendocument.spreadsheet"), 30)
	// Ots matches an OpenDocument Spreadsheet Template file.
	Ots = offset([]byte("mimetypeapplication/vnd.oasis.opendocument.spreadsheet-template"), 30)
	// Odp matches an OpenDocument Presentation file.
	Odp = offset([]byte("mimetypeapplication/vnd.oasis.opendocument.presentation"), 30)
	// Otp matches an OpenDocument Presentation Template file.
	Otp = offset([]byte("mimetypeapplication/vnd.oasis.opendocument.presentation-template"), 30)
	// Odg matches an OpenDocument Drawing file.
	Odg = offset([]byte("mimetypeapplication/vnd.oasis.opendocument.graphics"), 30)
	// Otg matches an OpenDocument Drawing Template file.
	Otg = offset([]byte("mimetypeapplication/vnd.oasis.opendocument.graphics-template"), 30)
	// Odf matches an OpenDocument Formula file.
	Odf = offset([]byte("mimetypeapplication/vnd.oasis.opendocument.formula"), 30)
	// Odc matches an OpenDocument Chart file.
	Odc = offset([]byte("mimetypeapplication/vnd.oasis.opendocument.chart"), 30)
	// Epub matches an EPUB file.
	Epub = offset([]byte("mimetypeapplication/epub+zip"), 30)
	// Sxc matches an OpenOffice Spreadsheet file.
	Sxc = offset([]byte("mimetypeapplication/vnd.sun.xml.calc"), 30)
	// Ora matches an OpenRaster file.
	Ora = offset([]byte("mimetypeimage/openraster"), 30)
)
View Source
var Glb = prefix([]byte("\x67\x6C\x54\x46\x02\x00\x00\x00"),
	[]byte("\x67\x6C\x54\x46\x01\x00\x00\x00"))

Glb matches a glTF model format file. GLB is the binary file format representation of 3D models save in the GL transmission Format (glTF). see more: https://docs.fileformat.com/3d/glb/

https://www.iana.org/assignments/media-types/model/gltf-binary

GLB file format is based on little endian and its header structure show below:

<-- 12-byte header --> | magic | version | length | | (uint32) | (uint32) | (uint32) | | \x67\x6C\x54\x46 | \x01\x00\x00\x00 | ... | | g l T F | 1 | ... |

Functions

func Aaf

func Aaf(raw []byte, limit uint32) bool

Aaf matches an Advanced Authoring Format file. See: https://pyaaf.readthedocs.io/en/latest/about.html See: https://en.wikipedia.org/wiki/Advanced_Authoring_Format

func Aiff

func Aiff(raw []byte, limit uint32) bool

Aiff matches Audio Interchange File Format file.

func Avi

func Avi(raw []byte, limit uint32) bool

Avi matches an Audio Video Interleaved file.

func CRX

func CRX(raw []byte, limit uint32) bool

CRX matches a Chrome extension file: a zip archive prepended by a package header.

func Class

func Class(raw []byte, limit uint32) bool

Class matches a java class file.

func Csv

func Csv(raw []byte, limit uint32) bool

Csv matches a comma-separated values file.

func Dbf

func Dbf(raw []byte, limit uint32) bool

Dbf matches a dBase file. https://www.dbase.com/Knowledgebase/INT/db7_file_fmt.htm

func Dcm

func Dcm(raw []byte, limit uint32) bool

Dcm matches a DICOM medical format file.

func DjVu

func DjVu(raw []byte, limit uint32) bool

DjVu matches a DjVu file.

func Docx

func Docx(raw []byte, limit uint32) bool

Docx matches a Microsoft Word 2007 file.

func Dwg

func Dwg(raw []byte, _ uint32) bool

Dwg matches a CAD drawing file.

func ElfDump

func ElfDump(raw []byte, limit uint32) bool

ElfDump matches a core dump file.

func ElfExe

func ElfExe(raw []byte, limit uint32) bool

ElfExe matches an executable file.

func ElfLib

func ElfLib(raw []byte, limit uint32) bool

ElfLib matches a shared library file.

func ElfObj

func ElfObj(raw []byte, limit uint32) bool

ElfObj matches an object file.

func Eot

func Eot(raw []byte, limit uint32) bool

Eot matches an Embedded OpenType font file.

func GeoJSON

func GeoJSON(raw []byte, limit uint32) bool

GeoJSON matches a RFC 7946 GeoJSON file.

GeoJSON detection implies searching for key:value pairs like: `"type": "Feature"` in the input. BUG(gabriel-vasile): The "type" key should be searched for in the root object.

func HAR

func HAR(raw []byte, limit uint32) bool

HAR matches a HAR Spec file. Spec: http://www.softwareishard.com/blog/har-12-spec/

func JSON

func JSON(raw []byte, limit uint32) bool

JSON matches a JavaScript Object Notation file.

func Jar

func Jar(raw []byte, limit uint32) bool

Jar matches a Java archive file.

func Jxl

func Jxl(raw []byte, _ uint32) bool

Jxl matches JPEG XL image file.

func MachO

func MachO(raw []byte, limit uint32) bool

MachO matches Mach-O binaries format.

func Marc

func Marc(raw []byte, limit uint32) bool

Marc matches a MARC21 (MAchine-Readable Cataloging) file.

func Mkv

func Mkv(raw []byte, limit uint32) bool

Mkv matches a mkv file.

func Mp3

func Mp3(raw []byte, limit uint32) bool

Mp3 matches an mp3 file.

func Mpeg

func Mpeg(raw []byte, limit uint32) bool

Mpeg matches a Moving Picture Experts Group file.

func Msg

func Msg(raw []byte, limit uint32) bool

Msg matches a Microsoft Outlook email file.

func Msi

func Msi(raw []byte, limit uint32) bool

Msi matches a Microsoft Windows Installer file. http://fileformats.archiveteam.org/wiki/Microsoft_Compound_File

func NdJSON

func NdJSON(raw []byte, limit uint32) bool

NdJSON matches a Newline delimited JSON file. All complete lines from raw must be valid JSON documents meaning they contain one of the valid JSON data types.

func Ogg

func Ogg(raw []byte, limit uint32) bool

Ogg matches an Ogg file.

func OggAudio

func OggAudio(raw []byte, limit uint32) bool

OggAudio matches an audio ogg file.

func OggVideo

func OggVideo(raw []byte, limit uint32) bool

OggVideo matches a video ogg file.

func Ole

func Ole(raw []byte, limit uint32) bool

Ole matches an Open Linking and Embedding file.

https://en.wikipedia.org/wiki/Object_Linking_and_Embedding

func P7s

func P7s(raw []byte, limit uint32) bool

P7s matches an .p7s signature File (PEM, Base64).

func Php

func Php(raw []byte, limit uint32) bool

Php matches a PHP: Hypertext Preprocessor file.

func Ppt

func Ppt(raw []byte, limit uint32) bool

Ppt matches a Microsoft PowerPoint 97-2003 file or a PowerPoint 95 presentation.

func Pptx

func Pptx(raw []byte, limit uint32) bool

Pptx matches a Microsoft PowerPoint 2007 file.

func Pub

func Pub(raw []byte, limit uint32) bool

Pub matches a Microsoft Publisher file.

func Qcp

func Qcp(raw []byte, limit uint32) bool

Qcp matches a Qualcomm Pure Voice file.

func Shp

func Shp(raw []byte, limit uint32) bool

Shp matches a shape format file. https://www.esri.com/library/whitepapers/pdfs/shapefile.pdf

func Shx

func Shx(raw []byte, limit uint32) bool

Shx matches a shape index format file. https://www.esri.com/library/whitepapers/pdfs/shapefile.pdf

func Srt

func Srt(in []byte, _ uint32) bool

Srt matches a SubRip file.

func Svg

func Svg(raw []byte, limit uint32) bool

Svg matches a SVG file.

func Text

func Text(raw []byte, limit uint32) bool

Text matches a plain text file.

TODO: This function does not parse BOM-less UTF16 and UTF32 files. Not really sure it should. Linux file utility also requires a BOM for UTF16 and UTF32.

func Tsv

func Tsv(raw []byte, limit uint32) bool

Tsv matches a tab-separated values file.

func Ttc

func Ttc(raw []byte, limit uint32) bool

Ttc matches a TrueType Collection font file.

func Ttf

func Ttf(raw []byte, limit uint32) bool

Ttf matches a TrueType font file.

func TzIf

func TzIf(raw []byte, limit uint32) bool

TzIf matches a Time Zone Information Format (TZif) file. See more: https://tools.ietf.org/id/draft-murchison-tzdist-tzif-00.html#rfc.section.3 Its header structure is shown below: +---------------+---+ | magic (4) | <-+-- version (1) +---------------+---+---------------------------------------+ | [unused - reserved for future use] (15) | +---------------+---------------+---------------+-----------+ | isutccnt (4) | isstdcnt (4) | leapcnt (4) | +---------------+---------------+---------------+ | timecnt (4) | typecnt (4) | charcnt (4) |

func Vtt

func Vtt(raw []byte, limit uint32) bool

Vtt matches a Web Video Text Tracks (WebVTT) file. See https://www.iana.org/assignments/media-types/text/vtt.

func Wav

func Wav(raw []byte, limit uint32) bool

Wav matches a Waveform Audio File Format file.

func WebM

func WebM(raw []byte, limit uint32) bool

WebM matches a WebM file.

func Webp

func Webp(raw []byte, _ uint32) bool

Webp matches a WebP file.

func Xls

func Xls(raw []byte, limit uint32) bool

Xls matches a Microsoft Excel 97-2003 file.

func Xlsx

func Xlsx(raw []byte, limit uint32) bool

Xlsx matches a Microsoft Excel 2007 file.

func Zip

func Zip(raw []byte, limit uint32) bool

Zip matches a zip archive.

func Zstd

func Zstd(raw []byte, limit uint32) bool

Zstd matches a Zstandard archive file.

Types

type Detector

type Detector func(raw []byte, limit uint32) bool

Detector receiveѕ the raw data of a file and returns whether the data meets any conditions. The limit parameter is an upper limit to the number of bytes received and is used to tell if the byte slice represents the whole file or is just the header of a file: len(raw) < limit or len(raw)>limit.

Notes

Bugs

  • The "type" key should be searched for in the root object.

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