How can I read from .tar.zip without unzipping it? Part II

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Sam Da 2011-2-14

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https://ww2.mathworks.cn/matlabcentral/answers/1341-how-can-i-read-from-tar-zip-without-unzipping-it-part-ii

Okay, I will try to create the zip instead. So, my zip will contain 1.mat, 2.mat ,etc. How do I read these .mat files from the zip without unzipping?

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Oleg Komarov 2011-2-14

I tried to give a look at unzip.m, too complicated. You should modify several routines with java knowledge...I can't be of any help.

Lets say that you can unzip, load and delete afterwards...would much easier to write but less efficient.

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Answer 1

Walter Roberson 2011-2-14

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https://ww2.mathworks.cn/matlabcentral/answers/1341-how-can-i-read-from-tar-zip-without-unzipping-it-part-ii#answer_1962

My understand (possibly incorrect) is that at the Java level there is a method to unzip from an already-positioned input stream. Each zip archive component has a header saying how long it is, thus allowing you to fseek() to where the next archive header would start.