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Add m3u8.pegjs.
Add m3u8.pegjs.
Generate the parser file via 'npm run peg'. There is a simple test script in test/pegtest.js. The test can be run via 'npm run testpeg' which will generate a new copy of the parser and then run the test file.pull/80/head
Gary Katsevman
12 years ago
3 changed files with 281 additions and 2 deletions
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/***** Start *****/ |
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start |
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= tags:tags+ .* { |
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var obj = {}; |
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tags.forEach(function(tag) { for (var p in tag) { obj[p] = tag[p]; }}); |
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return obj; |
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} |
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tags |
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= tag:m3uTag _ { return tag; } |
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/ tag:extinfTag _ { return tag; } |
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/ tag:targetDurationTag _ { return tag; } |
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/ tag:mediaSequenceTag _ { return tag; } |
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/ tag:keyTag _ { return tag; } |
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/ tag:programDateTimeTag _ { return tag; } |
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/ tag:allowCacheTag _ { return tag; } |
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/ tag:playlistTypeTag _ { return tag; } |
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/ tag:endlistTag _ { return tag; } |
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/ tag:mediaTag _ { return tag; } |
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/ tag:streamInfTag _ { return tag; } |
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/ tag:discontinuityTag _ { return tag; } |
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/ tag:discontinuitySequenceTag _ { return tag; } |
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/ tag:iframesOnlyTag _ { return tag; } |
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/ tag:mapTag _ { return tag; } |
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/ tag:iframeStreamInf _ { return tag; } |
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/ tag:startTag _ { return tag; } |
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/ tag:versionTag _ { return tag; } |
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/***** Tags *****/ |
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m3uTag |
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= tag:"#EXTM3U" { return {openTag: true}; } |
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extinfTag |
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= tag:'#EXTINF' ":" duration:number "," _ title:text? _ byteRange:byteRangeTag? file:mediaFile { |
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var fileObj = {}; |
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fileObj[file] = { |
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byteRange: byteRange, |
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title: title, |
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duration: duration, |
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file: file |
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}; |
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return fileObj; |
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} |
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byteRangeTag |
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= tag:"EXT-X-BYTERANGE" ":" length:int ("@" offset:int)? { return {length: length, offset: offset}; } |
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targetDurationTag |
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= tag:"#EXT-X-TARGETDURATION" ":" seconds:int { return {targetDuration: seconds}; } |
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mediaSequenceTag |
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= tag:'#EXT-X-MEDIA-SEQUENCE' ":" sequenceNumber:int { return {mediaSequence: sequenceNumber}; } |
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keyTag |
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= tag:'#EXT-X-KEY' ":" attrs:keyAttributes { return {key: attrs}; } |
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programDateTimeTag |
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= tag:'#EXT-X-PROGRAM-DATE-TIME' ":" date:date |
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allowCacheTag |
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= tag:'#EXT-X-ALLOW-CACHE' ":" answer:answer { return {allowCache: answer}; } |
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playlistTypeTag |
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= tag:'#EXT-X-PLAYLIST-TYPE' ":" type:playlistType { return {playlistType: type}; } |
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endlistTag |
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= tag:'#EXT-X-ENDLIST' { return {closeTag: true}; } |
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mediaTag |
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= tag:'#EXT-MEDIA' ":" attrs:mediaAttributes { return {media: attrs}; } |
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streamInfTag |
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= tag:'#EXT-X-STREAM-INF' ":" attrs:streamInfAttrs _ file:mediaFile { |
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var fileObj = {}; |
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fileObj[file] = { |
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attributes: attrs, |
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file: file |
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}; |
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return fileObj; |
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} |
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discontinuityTag |
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= tag:'#EXT-X-DISCONTINUITY' |
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discontinuitySequenceTag |
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= tag:'#EXT-X-DISCONTINUITY-SEQUENCE' ":" sequence:int { return {discontinuitySequence: sequence}; } |
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iframesOnlyTag |
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= tag:'#EXT-X-I-FRAMES-ONLY' |
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mapTag |
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= tag:'#EXT-X-MAP' ":" attrs:mapAttributes { return {map: attrs}; } |
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iframeStreamInf |
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= tag:'#EXT-X-I-FRAME-STREAM-INF' ":" attrs:iframeStreamAttrs { return {iframeStream: attrs}; } |
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startTag |
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= tag:'EXT-X-START' ":" attrs:startAttributes { return {start: attrs}; } |
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versionTag |
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= tag:'#EXT-X-VERSION' ":" version:int { return {version: version}; } |
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/***** Helpers *****/ |
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mediaFile |
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= file:[ -~]+ { return file.join(''); } |
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keyAttributes |
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= attrs:keyAttribute+ |
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keyAttribute |
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= "METHOD" "=" method:keyMethod |
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/ "URI" "=" uri:quotedString |
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/ "IV" "=" iv:hexint |
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/ "KEYFORMAT" "=" keyFormat:quotedString |
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/ "KEYFORMATVERSIONS" "=" keyFormatVersions:quotedString |
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keyMethod |
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= "NONE" |
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/ "AES-128" |
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/ "SAMPLE-AES" |
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mediaAttributes |
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= attrs:mediaAttribute+ |
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mediaAttribute |
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= "TYPE" "=" type:enumeratedString |
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/ "URI" "=" uri:quotedString |
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/ "GROUP-ID" "=" groupId:quotedString |
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/ "LANGUAGE" "=" langauge:quotedString |
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/ "ASSOC-LANGUAGE" "=" assocLanguage:quotedString |
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/ "NAME" "=" name:quotedString |
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/ "DEFAULT" "=" default:answer |
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/ "AUTOSELECT" "="autoselect:answer |
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/ "FORCE" "=" force:answer |
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/ "INSTREAM-ID" "=" instreamId:quotedString |
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/ "CHARACTERISTICS" "=" characteristics:quotedString |
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streamInfAttrs |
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= attrs:streamInfAttr+ |
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streamInfAttr |
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= streamInfSharedAttr |
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/ "AUDIO" "=" audio:quotedString |
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/ "SUBTITLES" "=" subtitles:quotedString |
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/ "CLOSED-CAPTION" "=" captions:"NONE" |
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/ "CLOSED-CAPTION" "=" captions:quotedString |
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streamInfSharedAttr |
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= "BANDWIDTH" "=" bandwidth:int |
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/ "CODECS" "=" codec:quotedString |
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/ "RESOLUTION" "=" resolution:resolution |
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/ "VIDEO" "=" video:quotedString |
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mapAttributes |
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= attrs:mapAttribute+ |
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mapAttribute |
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= "URI" "=" uri:quotedString |
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/ "BYTERANGE" "=" byteRange:quotedString |
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iframeStreamAttrs |
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= iframeStreamAttr+ |
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iframeStreamAttr |
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= streamInfSharedAttr |
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/ "URI" "=" uri:quotedString |
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startAttributes |
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= attrs:startAttribute+ |
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startAttribute |
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= "TIME-OFFSET" "=" timeOffset:number |
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/ "PRECISE" "=" precise:answer |
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answer "answer" |
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= "YES" |
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/ "NO" |
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playlistType |
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= "EVENT" |
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/ "VOD" |
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/***** Date *****/ |
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date "date" |
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= year:year "-" month:month "-" day:day "T" time:time timezone:timezone |
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year "year" |
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= digit digit digit digit |
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month "month" |
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= [01] digit |
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day "day" |
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= [0-3] digit |
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time "time" |
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= [0-2] digit ":" [0-5] digit ":" [0-5] digit "." digit+ |
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/ [0-2] digit ":" [0-5] digit ":" [0-5] digit |
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/ [0-2] digit ":" [0-5] digit |
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timezone "timezone" |
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= [+-] [0-2] digit ":" [0-5] digit |
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/ "Z" |
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/***** Numbers *****/ |
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number "number" |
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= parts:(int frac) _ { return parseFloat(parts.join('')); } |
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/ parts:(int) _ { return parts; } |
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resolution |
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= int "x" int |
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int |
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= first:digit19 rest:digits { return parseInt(first + rest.join(''), 10); } |
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/ digit:digit { return parseInt(digit, 10); } |
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/ neg:"-" first:digit19 rest:digits { return parseInt(neg + first + rest.join(''), 10); } |
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/ neg:"-" digit { return parseInt(neg + digit, 10); } |
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hexint |
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= "0x" hexDigits:hexDigit+ { return '0x' + hexDigits.join(''); } |
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/ "0X" hexDigits:hexDigit+ { return '0x' + hexDigits.join(''); } |
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frac |
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= dec:"." digits:digits { return parseFloat(dec + digits.join('')); } |
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digits |
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= digit+ |
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digit |
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= [0-9] |
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digit19 |
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= [1-9] |
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hexDigit |
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= [0-9a-fA-F] |
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/***** Text *****/ |
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enumeratedString |
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= chars:enumeratedChar+ _ { return chars.join('') } |
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quotedString |
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= '"' '"' _ { return ""; } |
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/ '"' chars:quotedChar+ '"' _ { return chars.join(''); } |
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enumeratedChar |
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= [^'" \n\t\r] |
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/ [a-zA-Z0-9] |
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quotedChar |
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= [^\r\n"] |
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/ char:char |
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text "text" |
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= text:char+ { return text.join(''); } |
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char "char" |
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= [ -~] |
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_ "whitespace" |
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= whitespace* |
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whitespace |
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= [ \t\n\r] |
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@ -0,0 +1,6 @@ |
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var fs = require('fs'); |
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var path = require('path'); |
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var manifest = fs.readFileSync(__dirname + '/fixtures/prog_index.m3u8').toString(); |
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var parser = require('../src/m3u8/m3u8-generated.js'); |
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var parsed = parser.parse(manifest); |
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console.log(parsed); |
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