Is there any SWF library that can just edit one swf tag?

I'm working on a project and i need to open a swf file, change contents of a swf tag without touching other tags

I've tried 开发者_如何学C"SwfDotNet library" but it does not output the unknown tags. For example if it encounters a "EXPORTASSETS" tag it does not write it to the output SWF because the library is old and supports up to swf version 7 and the tag is new.

Are there any libraries with this capability?

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This can be done with SWFWire using the AsyncSWFReaderFiltered class. For example if you wanted to read only ShowFrame tags:

var reader:AsyncSWFReaderFiltered = new AsyncSWFReaderFiltered();
reader.includedTags[1] = true;
reader.addEventListener(AsyncSWFReaderEvent.TAG_READ, function(ev:AsyncSWFReaderEvent):void
{
     trace('Done reading tag #'+ev.result.swf.tags.length);
});
reader.read();

All other tags will appear as UnknownTag, which are just containers for a ByteArray.

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I have solution for as3(flex) that can work in runtime:

1. Load needed swf as bytearray via URLLoader,
2. Parse swf via https://github.com/claus/as3swf util.
3. Made your changes to tags.
4. Generate new bytearray and load it via generic SWFLoader. I used that way to change swf version in runtime.

Also take a look at this tools for swf content manipulations:

• http://code.google.com/p/apparat/
• http://swfmill.org/ - you can convert your swf to xml, adjust and convert back to swf.