maya嵌入python_Maya Python-将zip文件嵌入到maya文件中吗？

This was a suggestion from another stack thread that I'm finally getting back to. It was part of a discussion about how to embed tools into a maya file.

You can write the whole thing as a python package, zip it, then stuff the binary contents of the zip file into a fileInfo. When you need to code, look for it in the user's $MAYA_APP_DIR; if there's no zip, write the contents of the fileInfo to disk as a zip and then insert the zip into sys.path

So far the programming is going okay, but I think I hit a snag. When I attempt this:

with open("..directory/myZip.zip","rb") as file:

cmds.fileInfo("myZip", file.read())

..and then I..

print cmds.fileInfo("myZip",q=1)

I get

[u'PK\003\004\024']

which is a bad translation of the first line of gibberish when reading the zip file as a text document.

How can I embed my zip file into my maya file as binary?

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Update:

Maya doesn't like writing to the file as a direct read of the utf-8 encoded zip file. I found various methods of making it into an acceptable string that could be written, but the decoding back to the file didn't appear to work. I see now that Theodox's suggestion was to write it to binary and put that in the fileInfo node.

How can one encode, store and then decode to write to file later?

If I were to convert to binary using for instance:

' '.join(format(ord(x), 'b') for x in line)

What code would I need to turn that back into the original utf-8 zip information?

解决方案

you can find related code here:

the relevant bit is

import base64

encoded = base64.b64encode(value)

decoded = base64.b64decode(encoded)

basically it's the same idea, except using the base64 module instead of binascii. Any method of converting an arbitary character stream to an ascii-safe representation will work fine, as long as you use a reversable method: the potential problem you need to watch out for is a character in the data block that looks to maya like a close quote - an open quote int he fileInfo will be messy in an MA file.

This example uses YAML to do arbitrary key-value pairs but that part is irrelevant to storing the binary stuff. I've used this technique for fairly large data (up to 640k if i recall) but I don't know if it has an upper limit in terms of what you can stash in Maya