49d411a3d1
- also for excluding some things in the build, as I may not need to support PCBoard at revision. Actually, I don't. Later I can add that support, but for now, I need the Revision bits working.
56 lines
2.3 KiB
CoffeeScript
56 lines
2.3 KiB
CoffeeScript
class @ImageTextModeSAUCE
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parseUrl: ( url ) ->
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req = new XMLHttpRequest()
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req.open 'GET', url, false
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req.overrideMimeType 'text/plain; charset=x-user-defined'
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req.send null
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content = if req.status is 200 or req.status is 0 then req.responseText else ''
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@parse content
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parse: ( content ) ->
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sauceMarker = content.length - 128;
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return false if content.substr( sauceMarker, 5 ) isnt 'SAUCE'
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@id = 'SAUCE'
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@version = content.substr( sauceMarker + 5, 2 )
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@title = content.substr( sauceMarker + 7, 35 )
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@author = content.substr( sauceMarker + 42, 20 )
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@group = content.substr( sauceMarker + 62, 20 )
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@date = content.substr( sauceMarker + 82, 8 )
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@fileSize = @unpackLong content.substr( sauceMarker + 90, 4 )
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@dataType = @getByteAt content.substr( sauceMarker + 94, 1 )
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@fileType = @getByteAt content.substr( sauceMarker + 95, 1 )
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@tinfo1 = @unpackShort content.substr( sauceMarker + 96, 2 )
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@tinfo2 = @unpackShort content.substr( sauceMarker + 98, 2 )
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@tinfo3 = @unpackShort content.substr( sauceMarker + 100, 2 )
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@tinfo4 = @unpackShort content.substr( sauceMarker + 102, 2 )
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@commentCount = @getByteAt content.substr( sauceMarker + 104, 1 )
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@flags = @getByteAt content.substr( sauceMarker + 105, 1 )
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@filler = content.substr( sauceMarker + 106, 22 )
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commentMarker = sauceMarker - 5 - @commentCount * 64
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if @commentCount > 0 and content.substr( commentMarker, 5 ) is 'COMNT'
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commentMarker += 5
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@comments = []
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i = @commentCount
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while i-- > 0
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@comments.push content.substr( commentMarker, 64 )
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commentMarker += 64
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return true
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unpackLong: ( data ) ->
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lng = ((( @getByteAt( data, 3 ) << 8 ) + @getByteAt( data, 2 ) << 8 ) + @getByteAt( data, 1 ) << 8 ) + @getByteAt( data, 0 )
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if lng < 0
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lng += 4294967296
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return lng;
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unpackShort: ( data ) ->
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shrt = ( @getByteAt( data, 1 ) << 8 ) + @getByteAt( data, 0 )
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if shrt < 0
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shrt += 65536
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return shrt
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getByteAt: ( data, offset ) ->
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return data.charCodeAt( offset ) & 0xFF
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