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package main
import ( "math/rand" "time")
// from http://stackoverflow.com/a/31832326
var src = rand.NewSource(time.Now().UnixNano())
var mimeToExtension = map[string]string{ "application/andrew-inset": "ez", "application/applixware": "aw", "application/atom+xml": "atom", "application/atomcat+xml": "atomcat", "application/atomsvc+xml": "atomsvc", "application/ccxml+xml": "ccxml", "application/cdmi-capability": "cdmia", "application/cdmi-container": "cdmic", "application/cdmi-domain": "cdmid", "application/cdmi-object": "cdmio", "application/cdmi-queue": "cdmiq", "application/cu-seeme": "cu", "application/davmount+xml": "davmount", "application/docbook+xml": "dbk", "application/dssc+der": "dssc", "application/dssc+xml": "xdssc", "application/ecmascript": "ecma", "application/emma+xml": "emma", "application/epub+zip": "epub", "application/exi": "exi", "application/font-tdpfr": "pfr", "application/gml+xml": "gml", "application/gpx+xml": "gpx", "application/gxf": "gxf", "application/hyperstudio": "stk", "application/inkml+xml": "ink inkml", "application/ipfix": "ipfix", "application/java-archive": "jar", "application/java-serialized-object": "ser", "application/java-vm": "class", "application/javascript": "js", "application/json": "json", "application/jsonml+json": "jsonml", "application/lost+xml": "lostxml", "application/mac-binhex40": "hqx", "application/mac-compactpro": "cpt", "application/mads+xml": "mads", "application/marc": "mrc", "application/marcxml+xml": "mrcx", "application/mathematica": "ma", "application/mathml+xml": "mathml", "application/mbox": "mbox", "application/mediaservercontrol+xml": "mscml", "application/metalink+xml": "metalink", "application/metalink4+xml": "meta4", "application/mets+xml": "mets", "application/mods+xml": "mods", "application/mp21": "mp21", "application/mp4": "mp4s", "application/msword": "doc", "application/mxf": "mxf", "application/octet-stream": "bin", "application/oda": "oda", "application/oebps-package+xml": "opf", "application/ogg": "ogx", "application/omdoc+xml": "omdoc", "application/onenote": "onetoc", "application/oxps": "oxps", "application/patch-ops-error+xml": "xer", "application/pdf": "pdf", "application/pgp-encrypted": "pgp", "application/pgp-signature": "asc", "application/pics-rules": "prf", "application/pkcs10": "p10", "application/pkcs7-mime": "p7m", "application/pkcs7-signature": "p7s", "application/pkcs8": "p8", "application/pkix-attr-cert": "ac", "application/pkix-cert": "cer", "application/pkix-crl": "crl", "application/pkix-pkipath": "pkipath", "application/pkixcmp": "pki", "application/pls+xml": "pls", "application/postscript": "ps", "application/prs.cww": "cww", "application/pskc+xml": "pskcxml", "application/rdf+xml": "rdf", "application/reginfo+xml": "rif", "application/relax-ng-compact-syntax": "rnc", "application/resource-lists+xml": "rl", "application/resource-lists-diff+xml": "rld", "application/rls-services+xml": "rs", "application/rpki-ghostbusters": "gbr", "application/rpki-manifest": "mft", "application/rpki-roa": "roa", "application/rsd+xml": "rsd", "application/rss+xml": "rss", "application/rtf": "rtf", "application/sbml+xml": "sbml", "application/scvp-cv-request": "scq", "application/scvp-cv-response": "scs", "application/scvp-vp-request": "spq", "application/scvp-vp-response": "spp", "application/sdp": "sdp", "application/set-payment-initiation": "setpay", "application/set-registration-initiation": "setreg", "application/shf+xml": "shf", "application/smil+xml": "smil", "application/sparql-query": "rq", "application/sparql-results+xml": "srx", "application/srgs": "gram", "application/srgs+xml": "grxml", "application/sru+xml": "sru", "application/ssdl+xml": "ssdl", "application/ssml+xml": "ssml", "application/tei+xml": "tei", "application/thraud+xml": "tfi", "application/timestamped-data": "tsd", "application/vnd.3gpp.pic-bw-large": "plb", "application/vnd.3gpp.pic-bw-small": "psb", "application/vnd.3gpp.pic-bw-var": "pvb", "application/vnd.3gpp2.tcap": "tcap", "application/vnd.3m.post-it-notes": "pwn", "application/vnd.accpac.simply.aso": "aso", "application/vnd.accpac.simply.imp": "imp", "application/vnd.acucobol": "acu", "application/vnd.acucorp": "atc acutc", "application/vnd.adobe.air-application-installer-package+zip": "air", "application/vnd.adobe.formscentral.fcdt": "fcdt", "application/vnd.adobe.fxp": "fxp", "application/vnd.adobe.xdp+xml": "xdp", "application/vnd.adobe.xfdf": "xfdf", "application/vnd.ahead.space": "ahead", "application/vnd.airzip.filesecure.azf": "azf", "application/vnd.airzip.filesecure.azs": "azs", "application/vnd.amazon.ebook": "azw", "application/vnd.americandynamics.acc": "acc", "application/vnd.amiga.ami": "ami", "application/vnd.android.package-archive": "apk", "application/vnd.anser-web-certificate-issue-initiation": "cii", "application/vnd.anser-web-funds-transfer-initiation": "fti", "application/vnd.antix.game-component": "atx", "application/vnd.apple.installer+xml": "mpkg", "application/vnd.apple.mpegurl": "m3u8", "application/vnd.aristanetworks.swi": "swi", "application/vnd.astraea-software.iota": "iota", "application/vnd.audiograph": "aep", "application/vnd.blueice.multipass": "mpm", "application/vnd.bmi": "bmi", "application/vnd.businessobjects": "rep", "application/vnd.chemdraw+xml": "cdxml", "application/vnd.chipnuts.karaoke-mmd": "mmd", "application/vnd.cinderella": "cdy", "application/vnd.claymore": "cla", "application/vnd.cloanto.rp9": "rp9", "application/vnd.clonk.c4group": "c4g", "application/vnd.cluetrust.cartomobile-config": "c11amc", "application/vnd.cluetrust.cartomobile-config-pkg": "c11amz", "application/vnd.commonspace": "csp", "application/vnd.contact.cmsg": "cdbcmsg", "application/vnd.cosmocaller": "cmc", "application/vnd.crick.clicker": "clkx", "application/vnd.crick.clicker.keyboard": "clkk", "application/vnd.crick.clicker.palette": "clkp", "application/vnd.crick.clicker.template": "clkt", "application/vnd.crick.clicker.wordbank": "clkw", "application/vnd.criticaltools.wbs+xml": "wbs", "application/vnd.ctc-posml": "pml", "application/vnd.cups-ppd": "ppd", "application/vnd.curl.car": "car", "application/vnd.curl.pcurl": "pcurl", "application/vnd.dart": "dart", "application/vnd.data-vision.rdz": "rdz", "application/vnd.dece.data": "uvf", "application/vnd.dece.ttml+xml": "uvt", "application/vnd.dece.unspecified": "uvx", "application/vnd.dece.zip": "uvz", "application/vnd.denovo.fcselayout-link": "fe_launch", "application/vnd.dna": "dna", "application/vnd.dolby.mlp": "mlp", "application/vnd.dpgraph": "dpg", "application/vnd.dreamfactory": "dfac", "application/vnd.ds-keypoint": "kpxx", "application/vnd.dvb.ait": "ait", "application/vnd.dvb.service": "svc", "application/vnd.dynageo": "geo", "application/vnd.ecowin.chart": "mag", "application/vnd.enliven": "nml", "application/vnd.epson.esf": "esf", "application/vnd.epson.msf": "msf", "application/vnd.epson.quickanime": "qam", "application/vnd.epson.salt": "slt", "application/vnd.epson.ssf": "ssf", "application/vnd.eszigno3+xml": "es3", "application/vnd.ezpix-album": "ez2", "application/vnd.ezpix-package": "ez3", "application/vnd.fdf": "fdf", "application/vnd.fdsn.mseed": "mseed", "application/vnd.fdsn.seed": "seed", "application/vnd.flographit": "gph", "application/vnd.fluxtime.clip": "ftc", "application/vnd.framemaker": "fm", "application/vnd.frogans.fnc": "fnc", "application/vnd.frogans.ltf": "ltf", "application/vnd.fsc.weblaunch": "fsc", "application/vnd.fujitsu.oasys": "oas", "application/vnd.fujitsu.oasys2": "oa2", "application/vnd.fujitsu.oasys3": "oa3", "application/vnd.fujitsu.oasysgp": "fg5", "application/vnd.fujitsu.oasysprs": "bh2", "application/vnd.fujixerox.ddd": "ddd", "application/vnd.fujixerox.docuworks": "xdw", "application/vnd.fujixerox.docuworks.binder": "xbd", "application/vnd.fuzzysheet": "fzs", "application/vnd.genomatix.tuxedo": "txd", "application/vnd.geogebra.file": "ggb", "application/vnd.geogebra.tool": "ggt", "application/vnd.geometry-explorer": "gex gre", "application/vnd.geonext": "gxt", "application/vnd.geoplan": "g2w", "application/vnd.geospace": "g3w", "application/vnd.gmx": "gmx", "application/vnd.google-earth.kml+xml": "kml", "application/vnd.google-earth.kmz": "kmz", "application/vnd.grafeq": "gqf gqs", "application/vnd.groove-account": "gac", "application/vnd.groove-help": "ghf", "application/vnd.groove-identity-message": "gim", "application/vnd.groove-injector": "grv", "application/vnd.groove-tool-message": "gtm", "application/vnd.groove-tool-template": "tpl", "application/vnd.groove-vcard": "vcg", "application/vnd.hal+xml": "hal", "application/vnd.handheld-entertainment+xml": "zmm", "application/vnd.hbci": "hbci", "application/vnd.hhe.lesson-player": "les", "application/vnd.hp-hpgl": "hpgl", "application/vnd.hp-hpid": "hpid", "application/vnd.hp-hps": "hps", "application/vnd.hp-jlyt": "jlt", "application/vnd.hp-pcl": "pcl", "application/vnd.hp-pclxl": "pclxl", "application/vnd.hydrostatix.sof-data": "sfd-hdstx", "application/vnd.ibm.minipay": "mpy", "application/vnd.ibm.modcap": "afp", "application/vnd.ibm.rights-management": "irm", "application/vnd.ibm.secure-container": "sc", "application/vnd.iccprofile": "icc icm", "application/vnd.igloader": "igl", "application/vnd.immervision-ivp": "ivp", "application/vnd.immervision-ivu": "ivu", "application/vnd.insors.igm": "igm", "application/vnd.intercon.formnet": "xpw", "application/vnd.intergeo": "i2g", "application/vnd.intu.qbo": "qbo", "application/vnd.intu.qfx": "qfx", "application/vnd.ipunplugged.rcprofile": "rcprofile", "application/vnd.irepository.package+xml": "irp", "application/vnd.is-xpr": "xpr", "application/vnd.isac.fcs": "fcs", "application/vnd.jam": "jam", "application/vnd.jcp.javame.midlet-rms": "rms", "application/vnd.jisp": "jisp", "application/vnd.joost.joda-archive": "joda", "application/vnd.kahootz": "ktz", "application/vnd.kde.karbon": "karbon", "application/vnd.kde.kchart": "chrt", "application/vnd.kde.kformula": "kfo", "application/vnd.kde.kivio": "flw", "application/vnd.kde.kontour": "kon", "application/vnd.kde.kpresenter": "kpr", "application/vnd.kde.kspread": "ksp", "application/vnd.kde.kword": "kwd", "application/vnd.kenameaapp": "htke", "application/vnd.kidspiration": "kia", "application/vnd.kinar": "kne knp", "application/vnd.koan": "skp", "application/vnd.kodak-descriptor": "sse", "application/vnd.las.las+xml": "lasxml", "application/vnd.llamagraphics.life-balance.desktop": "lbd", "application/vnd.llamagraphics.life-balance.exchange+xml": "lbe", "application/vnd.lotus-1-2-3": "123", "application/vnd.lotus-approach": "apr", "application/vnd.lotus-freelance": "pre", "application/vnd.lotus-notes": "nsf", "application/vnd.lotus-organizer": "org", "application/vnd.lotus-screencam": "scm", "application/vnd.lotus-wordpro": "lwp", "application/vnd.macports.portpkg": "portpkg", "application/vnd.mcd": "mcd", "application/vnd.medcalcdata": "mc1", "application/vnd.mediastation.cdkey": "cdkey", "application/vnd.mfer": "mwf", "application/vnd.mfmp": "mfm", "application/vnd.micrografx.flo": "flo", "application/vnd.micrografx.igx": "igx", "application/vnd.mif": "mif", "application/vnd.mobius.daf": "daf", "application/vnd.mobius.dis": "dis", "application/vnd.mobius.mbk": "mbk", "application/vnd.mobius.mqy": "mqy", "application/vnd.mobius.msl": "msl", "application/vnd.mobius.plc": "plc", "application/vnd.mobius.txf": "txf", "application/vnd.mophun.application": "mpn", "application/vnd.mophun.certificate": "mpc", "application/vnd.mozilla.xul+xml": "xul", "application/vnd.ms-artgalry": "cil", "application/vnd.ms-cab-compressed": "cab", "application/vnd.ms-excel": "xls", "application/vnd.ms-excel.addin.macroenabled.12": "xlam", "application/vnd.ms-excel.sheet.binary.macroenabled.12": "xlsb", "application/vnd.ms-excel.sheet.macroenabled.12": "xlsm", "application/vnd.ms-excel.template.macroenabled.12": "xltm", "application/vnd.ms-fontobject": "eot", "application/vnd.ms-htmlhelp": "chm", "application/vnd.ms-ims": "ims", "application/vnd.ms-lrm": "lrm", "application/vnd.ms-officetheme": "thmx", "application/vnd.ms-pki.seccat": "cat", "application/vnd.ms-pki.stl": "stl", "application/vnd.ms-powerpoint": "ppt pps pot", "application/vnd.ms-powerpoint.addin.macroenabled.12": "ppam", "application/vnd.ms-powerpoint.presentation.macroenabled.12": "pptm", "application/vnd.ms-powerpoint.slide.macroenabled.12": "sldm", "application/vnd.ms-powerpoint.slideshow.macroenabled.12": "ppsm", "application/vnd.ms-powerpoint.template.macroenabled.12": "potm", "application/vnd.ms-project": "mpp mpt", "application/vnd.ms-word.document.macroenabled.12": "docm", "application/vnd.ms-word.template.macroenabled.12": "dotm", "application/vnd.ms-works": "wps", "application/vnd.ms-wpl": "wpl", "application/vnd.ms-xpsdocument": "xps", "application/vnd.mseq": "mseq", "application/vnd.musician": "mus", "application/vnd.muvee.style": "msty", "application/vnd.mynfc": "taglet", "application/vnd.neurolanguage.nlu": "nlu", "application/vnd.nitf": "ntf nitf", "application/vnd.noblenet-directory": "nnd", "application/vnd.noblenet-sealer": "nns", "application/vnd.noblenet-web": "nnw", "application/vnd.nokia.n-gage.data": "ngdat", "application/vnd.nokia.n-gage.symbian.install": "n-gage", "application/vnd.nokia.radio-preset": "rpst", "application/vnd.nokia.radio-presets": "rpss", "application/vnd.novadigm.edm": "edm", "application/vnd.novadigm.edx": "edx", "application/vnd.novadigm.ext": "ext", "application/vnd.oasis.opendocument.chart": "odc", "application/vnd.oasis.opendocument.chart-template": "otc", "application/vnd.oasis.opendocument.database": "odb", "application/vnd.oasis.opendocument.formula": "odf", "application/vnd.oasis.opendocument.formula-template": "odft", "application/vnd.oasis.opendocument.graphics": "odg", "application/vnd.oasis.opendocument.graphics-template": "otg", "application/vnd.oasis.opendocument.image": "odi", "application/vnd.oasis.opendocument.image-template": "oti", "application/vnd.oasis.opendocument.presentation": "odp", "application/vnd.oasis.opendocument.presentation-template": "otp", "application/vnd.oasis.opendocument.spreadsheet": "ods", "application/vnd.oasis.opendocument.spreadsheet-template": "ots", "application/vnd.oasis.opendocument.text": "odt", "application/vnd.oasis.opendocument.text-master": "odm", "application/vnd.oasis.opendocument.text-template": "ott", "application/vnd.oasis.opendocument.text-web": "oth", "application/vnd.olpc-sugar": "xo", "application/vnd.oma.dd2+xml": "dd2", "application/vnd.openofficeorg.extension": "oxt", "application/vnd.openxmlformats-officedocument.presentationml.presentation": "pptx", "application/vnd.openxmlformats-officedocument.presentationml.slide": "sldx", "application/vnd.openxmlformats-officedocument.presentationml.slideshow": "ppsx", "application/vnd.openxmlformats-officedocument.presentationml.template": "potx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet": "xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.template": "xltx", "application/vnd.openxmlformats-officedocument.wordprocessingml.document": "docx", "application/vnd.openxmlformats-officedocument.wordprocessingml.template": "dotx", "application/vnd.osgeo.mapguide.package": "mgp", "application/vnd.osgi.dp": "dp", "application/vnd.osgi.subsystem": "esa", "application/vnd.palm": "pdb pqa oprc", "application/vnd.pawaafile": "paw", "application/vnd.pg.format": "str", "application/vnd.pg.osasli": "ei6", "application/vnd.picsel": "efif", "application/vnd.pmi.widget": "wg", "application/vnd.pocketlearn": "plf", "application/vnd.powerbuilder6": "pbd", "application/vnd.previewsystems.box": "box", "application/vnd.proteus.magazine": "mgz", "application/vnd.publishare-delta-tree": "qps", "application/vnd.pvi.ptid1": "ptid", "application/vnd.quark.quarkxpress": "qxd", "application/vnd.realvnc.bed": "bed", "application/vnd.recordare.musicxml": "mxl", "application/vnd.recordare.musicxml+xml": "musicxml", "application/vnd.rig.cryptonote": "cryptonote", "application/vnd.rim.cod": "cod", "application/vnd.rn-realmedia": "rm", "application/vnd.rn-realmedia-vbr": "rmvb", "application/vnd.route66.link66+xml": "link66", "application/vnd.sailingtracker.track": "st", "application/vnd.seemail": "see", "application/vnd.sema": "sema", "application/vnd.semd": "semd", "application/vnd.semf": "semf", "application/vnd.shana.informed.formdata": "ifm", "application/vnd.shana.informed.formtemplate": "itp", "application/vnd.shana.informed.interchange": "iif", "application/vnd.shana.informed.package": "ipk", "application/vnd.simtech-mindmapper": "twd", "application/vnd.smaf": "mmf", "application/vnd.smart.teacher": "teacher", "application/vnd.solent.sdkm+xml": "sdkm", "application/vnd.spotfire.dxp": "dxp", "application/vnd.spotfire.sfs": "sfs", "application/vnd.stardivision.calc": "sdc", "application/vnd.stardivision.draw": "sda", "application/vnd.stardivision.impress": "sdd", "application/vnd.stardivision.math": "smf", "application/vnd.stardivision.writer": "sdw", "application/vnd.stardivision.writer-global": "sgl", "application/vnd.stepmania.package": "smzip", "application/vnd.stepmania.stepchart": "sm", "application/vnd.sun.xml.calc": "sxc", "application/vnd.sun.xml.calc.template": "stc", "application/vnd.sun.xml.draw": "sxd", "application/vnd.sun.xml.draw.template": "std", "application/vnd.sun.xml.impress": "sxi", "application/vnd.sun.xml.impress.template": "sti", "application/vnd.sun.xml.math": "sxm", "application/vnd.sun.xml.writer": "sxw", "application/vnd.sun.xml.writer.global": "sxg", "application/vnd.sun.xml.writer.template": "stw", "application/vnd.sus-calendar": "sus", "application/vnd.svd": "svd", "application/vnd.symbian.install": "sis", "application/vnd.syncml+xml": "xsm", "application/vnd.syncml.dm+wbxml": "bdm", "application/vnd.syncml.dm+xml": "xdm", "application/vnd.tao.intent-module-archive": "tao", "application/vnd.tcpdump.pcap": "pcap", "application/vnd.tmobile-livetv": "tmo", "application/vnd.trid.tpt": "tpt", "application/vnd.triscape.mxs": "mxs", "application/vnd.trueapp": "tra", "application/vnd.ufdl": "ufdl", "application/vnd.uiq.theme": "utz", "application/vnd.umajin": "umj", "application/vnd.unity": "unityweb", "application/vnd.uoml+xml": "uoml", "application/vnd.vcx": "vcx", "application/vnd.visio": "vsd", "application/vnd.visionary": "vis", "application/vnd.vsf": "vsf", "application/vnd.wap.wbxml": "wbxml", "application/vnd.wap.wmlc": "wmlc", "application/vnd.wap.wmlscriptc": "wmlsc", "application/vnd.webturbo": "wtb", "application/vnd.wolfram.player": "nbp", "application/vnd.wordperfect": "wpd", "application/vnd.wqd": "wqd", "application/vnd.wt.stf": "stf", "application/vnd.xara": "xar", "application/vnd.xfdl": "xfdl", "application/vnd.yamaha.hv-dic": "hvd", "application/vnd.yamaha.hv-script": "hvs", "application/vnd.yamaha.hv-voice": "hvp", "application/vnd.yamaha.openscoreformat": "osf", "application/vnd.yamaha.openscoreformat.osfpvg+xml": "osfpvg", "application/vnd.yamaha.smaf-audio": "saf", "application/vnd.yamaha.smaf-phrase": "spf", "application/vnd.yellowriver-custom-menu": "cmp", "application/vnd.zul": "zir", "application/vnd.zzazz.deck+xml": "zaz", "application/voicexml+xml": "vxml", "application/widget": "wgt", "application/winhlp": "hlp", "application/wsdl+xml": "wsdl", "application/wspolicy+xml": "wspolicy", "application/x-7z-compressed": "7z", "application/x-abiword": "abw", "application/x-ace-compressed": "ace", "application/x-apple-diskimage": "dmg", "application/x-authorware-bin": "aab", "application/x-authorware-map": "aam", "application/x-authorware-seg": "aas", "application/x-bcpio": "bcpio", "application/x-bittorrent": "torrent", "application/x-blorb": "blb", "application/x-bzip": "bz", "application/x-bzip2": "bz2", "application/x-cbr": "cbr", "application/x-cdlink": "vcd", "application/x-cfs-compressed": "cfs", "application/x-chat": "chat", "application/x-chess-pgn": "pgn", "application/x-conference": "nsc", "application/x-cpio": "cpio", "application/x-csh": "csh", "application/x-debian-package": "deb", "application/x-dgc-compressed": "dgc", "application/x-director": "dir", "application/x-doom": "wad", "application/x-dtbncx+xml": "ncx", "application/x-dtbook+xml": "dtb", "application/x-dtbresource+xml": "res", "application/x-dvi": "dvi", "application/x-envoy": "evy", "application/x-eva": "eva", "application/x-font-bdf": "bdf", "application/x-font-ghostscript": "gsf", "application/x-font-linux-psf": "psf", "application/x-font-otf": "otf", "application/x-font-pcf": "pcf", "application/x-font-snf": "snf", "application/x-font-ttf": "ttf", "application/x-font-type1": "pfa", "application/x-font-woff": "woff", "application/x-freearc": "arc", "application/x-futuresplash": "spl", "application/x-gca-compressed": "gca", "application/x-glulx": "ulx", "application/x-gnumeric": "gnumeric", "application/x-gramps-xml": "gramps", "application/x-gtar": "gtar", "application/x-hdf": "hdf", "application/x-install-instructions": "install", "application/x-iso9660-image": "iso", "application/x-java-jnlp-file": "jnlp", "application/x-latex": "latex", "application/x-lzh-compressed": "lzh", "application/x-mie": "mie", "application/x-mobipocket-ebook": "prc", "application/x-ms-application": "application", "application/x-ms-shortcut": "lnk", "application/x-ms-wmd": "wmd", "application/x-ms-wmz": "wmz", "application/x-ms-xbap": "xbap", "application/x-msaccess": "mdb", "application/x-msbinder": "obd", "application/x-mscardfile": "crd", "application/x-msclip": "clp", "application/x-msdownload": "exe", "application/x-msmediaview": "mvb", "application/x-msmetafile": "wmf", "application/x-msmoney": "mny", "application/x-mspublisher": "pub", "application/x-msschedule": "scd", "application/x-msterminal": "trm", "application/x-mswrite": "wri", "application/x-netcdf": "nc", "application/x-nzb": "nzb", "application/x-pkcs12": "p12", "application/x-pkcs7-certificates": "p7b", "application/x-pkcs7-certreqresp": "p7r", "application/x-rar-compressed": "rar", "application/x-research-info-systems": "ris", "application/x-sh": "sh", "application/x-shar": "shar", "application/x-shockwave-flash": "swf", "application/x-silverlight-app": "xap", "application/x-sql": "sql", "application/x-stuffit": "sit", "application/x-stuffitx": "sitx", "application/x-subrip": "srt", "application/x-sv4cpio": "sv4cpio", "application/x-sv4crc": "sv4crc", "application/x-t3vm-image": "t3", "application/x-tads": "gam", "application/x-tar": "tar", "application/x-tcl": "tcl", "application/x-tex": "tex", "application/x-tex-tfm": "tfm", "application/x-texinfo": "texinfo", "application/x-tgif": "obj", "application/x-ustar": "ustar", "application/x-wais-source": "src", "application/x-x509-ca-cert": "der", "application/x-xfig": "fig", "application/x-xliff+xml": "xlf", "application/x-xpinstall": "xpi", "application/x-xz": "xz", "application/x-zmachine": "z1", "application/xaml+xml": "xaml", "application/xcap-diff+xml": "xdf", "application/xenc+xml": "xenc", "application/xhtml+xml": "xhtml", "application/xml": "xml", "application/xml-dtd": "dtd", "application/xop+xml": "xop", "application/xproc+xml": "xpl", "application/xslt+xml": "xslt", "application/xspf+xml": "xspf", "application/xv+xml": "mxml", "application/yang": "yang", "application/yin+xml": "yin", "application/zip": "zip", "audio/adpcm": "adp", "audio/basic": "au", "audio/midi": "mid", "audio/mp4": "mp4a", "audio/mpeg": "mpga", "audio/ogg": "oga", "audio/s3m": "s3m", "audio/silk": "sil", "audio/vnd.dece.audio": "uva", "audio/vnd.digital-winds": "eol", "audio/vnd.dra": "dra", "audio/vnd.dts": "dts", "audio/vnd.dts.hd": "dtshd", "audio/vnd.lucent.voice": "lvp", "audio/vnd.ms-playready.media.pya": "pya", "audio/vnd.nuera.ecelp4800": "ecelp4800", "audio/vnd.nuera.ecelp7470": "ecelp7470", "audio/vnd.nuera.ecelp9600": "ecelp9600", "audio/vnd.rip": "rip", "audio/webm": "weba", "audio/x-aac": "aac", "audio/x-aiff": "aif", "audio/x-caf": "caf", "audio/x-flac": "flac", "audio/x-matroska": "mka", "audio/x-mpegurl": "m3u", "audio/x-ms-wax": "wax", "audio/x-ms-wma": "wma", "audio/x-pn-realaudio": "ram", "audio/x-pn-realaudio-plugin": "rmp", "audio/x-wav": "wav", "audio/xm": "xm", "chemical/x-cdx": "cdx", "chemical/x-cif": "cif", "chemical/x-cmdf": "cmdf", "chemical/x-cml": "cml", "chemical/x-csml": "csml", "chemical/x-xyz": "xyz", "image/bmp": "bmp", "image/cgm": "cgm", "image/g3fax": "g3", "image/gif": "gif", "image/ief": "ief", "image/jpeg": "jpeg", "image/ktx": "ktx", "image/png": "png", "image/prs.btif": "btif", "image/sgi": "sgi", "image/svg+xml": "svg svgz", "image/tiff": "tiff tif", "image/vnd.adobe.photoshop": "psd", "image/vnd.dece.graphic": "uvi", "image/vnd.dvb.subtitle": "sub", "image/vnd.djvu": "djvu", "image/vnd.dwg": "dwg", "image/vnd.dxf": "dxf", "image/vnd.fastbidsheet": "fbs", "image/vnd.fpx": "fpx", "image/vnd.fst": "fst", "image/vnd.fujixerox.edmics-mmr": "mmr", "image/vnd.fujixerox.edmics-rlc": "rlc", "image/vnd.ms-modi": "mdi", "image/vnd.ms-photo": "wdp", "image/vnd.net-fpx": "npx", "image/vnd.wap.wbmp": "wbmp", "image/vnd.xiff": "xif", "image/webp": "webp", "image/x-3ds": "3ds", "image/x-cmu-raster": "ras", "image/x-cmx": "cmx", "image/x-freehand": "fh", "image/x-icon": "ico", "image/x-mrsid-image": "sid", "image/x-pcx": "pcx", "image/x-pict": "pic", "image/x-portable-anymap": "pnm", "image/x-portable-bitmap": "pbm", "image/x-portable-graymap": "pgm", "image/x-portable-pixmap": "ppm", "image/x-rgb": "rgb", "image/x-tga": "tga", "image/x-xbitmap": "xbm", "image/x-xpixmap": "xpm", "image/x-xwindowdump": "xwd", "message/rfc822": "eml mime", "model/iges": "igs", "model/mesh": "mesh", "model/vnd.collada+xml": "dae", "model/vnd.dwf": "dwf", "model/vnd.gdl": "gdl", "model/vnd.gtw": "gtw", "model/vnd.mts": "mts", "model/vnd.vtu": "vtu", "model/vrml": "wrl vrml", "model/x3d+binary": "x3db", "model/x3d+vrml": "x3dv", "model/x3d+xml": "x3d", "text/cache-manifest": "appcache", "text/calendar": "ics ifb", "text/css": "css", "text/csv": "csv", "text/html": "html", "text/n3": "n3", "text/plain": "txt", "text/prs.lines.tag": "dsc", "text/richtext": "rtx", "text/sgml": "sgml sgm", "text/tab-separated-values": "tsv", "text/troff": "t", "text/turtle": "ttl", "text/uri-list": "uri", "text/vcard": "vcard", "text/vnd.curl": "curl", "text/vnd.curl.dcurl": "dcurl", "text/vnd.curl.scurl": "scurl", "text/vnd.curl.mcurl": "mcurl", "text/vnd.dvb.subtitle": "sub", "text/vnd.fly": "fly", "text/vnd.fmi.flexstor": "flx", "text/vnd.graphviz": "gv", "text/vnd.in3d.3dml": "3dml", "text/vnd.in3d.spot": "spot", "text/vnd.sun.j2me.app-descriptor": "jad", "text/vnd.wap.wml": "wml", "text/vnd.wap.wmlscript": "wmls", "text/x-asm": "s asm", "text/x-c": "c", "text/x-fortran": "f", "text/x-java-source": "java", "text/x-opml": "opml", "text/x-pascal": "p pas", "text/x-nfo": "nfo", "text/x-shellscript": "sh", "text/x-setext": "etx", "text/x-sfv": "sfv", "text/x-tex": "tex", "text/x-uuencode": "uu", "text/x-vcalendar": "vcs", "text/x-vcard": "vcf", "video/3gpp": "3gp", "video/3gpp2": "3g2", "video/h261": "h261", "video/h263": "h263", "video/h264": "h264", "video/jpeg": "jpgv", "video/jpm": "jpm", "video/mj2": "mj2", "video/mp4": "mp4", "video/mpeg": "mpeg", "video/ogg": "ogv", "video/quicktime": "qt", "video/vnd.dece.hd": "uvh", "video/vnd.dece.mobile": "uvm", "video/vnd.dece.pd": "uvp", "video/vnd.dece.sd": "uvs", "video/vnd.dece.video": "uvv", "video/vnd.dvb.file": "dvb", "video/vnd.fvt": "fvt", "video/vnd.mpegurl": "m4u", "video/vnd.ms-playready.media.pyv": "pyv", "video/vnd.uvvu.mp4": "uvvu", "video/vnd.vivo": "viv", "video/webm": "webm", "video/x-f4v": "f4v", "video/x-fli": "fli", "video/x-flv": "flv", "video/x-m4v": "m4v", "video/x-matroska": "mkv", "video/x-mng": "mng", "video/x-ms-asf": "asf", "video/x-ms-vob": "vob", "video/x-ms-wm": "wm", "video/x-ms-wmv": "wmv", "video/x-ms-wmx": "wmx", "video/x-ms-wvx": "wvx", "video/x-msvideo": "avi", "video/x-sgi-movie": "movie", "video/x-smv": "smv", "x-conference/x-cooltalk": "ice",}
const letterBytes = "abcdefghijklmnopqrstuvwxyz1234567890"const ( letterIdxBits = 6 // 6 bits to represent a letter index
letterIdxMask = 1<<letterIdxBits - 1 // All 1-bits, as many as letterIdxBits
letterIdxMax = 63 / letterIdxBits // # of letter indices fitting in 63 bits
)
func randomString(n int) string { b := make([]byte, n) // A src.Int63() generates 63 random bits, enough for letterIdxMax characters!
for i, cache, remain := n-1, src.Int63(), letterIdxMax; i >= 0; { if remain == 0 { cache, remain = src.Int63(), letterIdxMax } if idx := int(cache & letterIdxMask); idx < len(letterBytes) { b[i] = letterBytes[idx] i-- } cache >>= letterIdxBits remain-- }
return string(b)}
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