feat: stream write to zip directly

[zhangzitao]

PR Details

Reduce the memory cost when saving file.

Description

If options has set password, the process will write to buffer in memory. Or it will write directly to the file.

Related Issue

Motivation and Context

How Has This Been Tested

Types of changes

• New feature (non-breaking change which adds functionality)

Checklist

• My code follows the code style of this project.
• I have read the CONTRIBUTING document.

[codecov-commenter]

Codecov Report

Merging #863 (6675d43) into master (2cfcf9e) will increase coverage by 0.00%.
The diff coverage is 60.00%.

@@           Coverage Diff           @@
##           master     #863   +/-   ##
=======================================
  Coverage   97.45%   97.45%           
=======================================
  Files          31       31           
  Lines       10891    10899    +8     
=======================================
+ Hits        10614    10622    +8     
  Misses        155      155           
  Partials      122      122           

Flag	Coverage Δ
unittests	97.45% <60.00%> (+<0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
file.go	83.67% <60.00%> (+1.45%)	⬆️

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[xuri]

Hi @zhangzitao, thanks for your PR! Could you add a test to cover the change?

[xuri]

LGTM, thank you.