使新的git分支仅包含一些文件的完整历史记录 [英] make new git branch containing full history of only some files

问题描述

我处于重构的中间，最终将我从围绕它构建的API中分离出核心模型。

我有当前（简化的）目录结构：

  / root 
 | -model_core.py 
 | -model_configuration.py 
 | -model_frontend.py 
 | -plot_model.py 
 | -cool_use_for_model.py 
  

如何创建一个新的分支， model-core ，它包含 model_core.py 和 model_configuration.py only ，以及它们的完整提交来自当前分支的历史？

解决方案

您有几个选项可以做到这一点： $ b

I'm in the middle of a refactor that will eventually separate out "the core model" from the API i've built around it.

I have the current (simplified) directory structure:

/root
|-model_core.py
|-model_configuration.py
|-model_frontend.py
|-plot_model.py
|-cool_use_for_model.py

How do I make a new branch, model-core, that contains model_core.pyand model_configuration.py only, as well as their full commit history from the current branch?

解决方案

You have few options to do it:

http://blogs.atlassian.com/2014/04/tear-apart-repository-git-way/
https://lostechies.com/johnteague/2014/04/04/using-git-subtrees-to-split-a-repository/

The main 2 optins are:

git filter-branch

git subtree split --prefix=lib -b split

---

As mentioned above lets explain in details each options

filter-branch will loop over each commit and then you can checkout only the given files while git subteree split will be a better option in your case.

Explaining both of the option so you can choose which one you prefer.

---

Sample code:

filter-branch

# Filter the master branch to your directory and remove empty commits
git filter-branch --prune-empty --subdirectory-filter YOUR_FOLDER_NAME filter_from_branch

This will checkout all your desired files from the given folder to the current directory

---

subtree split

git subtree git-subtree - Merge subtrees together or split repository into subtrees

git subtree split -P <name-of-folder> -b <name-of-new-branch>

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