wh1t3cat1k / split-with-history

A PowerShell script that allows to extract lines from a file into another file, preserving git history in both

Split With History

Do you have monstrous files with lots of classes in your repository, but you are afraid to split them because you don't want to lose git change history?

This is a PowerShell script that allows to extracts a line range from the specified file into another file, preserving git history for both the original file and the extracted bit.

Example usage:

splitwithhistory -s 20 -e 70 -p 'AC-82445' -o 'ManyClasses.cs' -t 'SingleClass.cs'

Parameters

• -s or -start - the number of the first line (inclusive) to be extracted to a separate file. Required.
• -e or -end - the number of the last line (inclusive) to be extracted to a separate file. Required.
• -p or -commitPrefix - optional prefix of the automatic commits that will be made in the git repository.
• -o - the source file name, from which the specified line range will be extracted. Required.
• -t - the target file name, to which the specified part of the source file will be extracted. Required.
• -tr - optional new name for the source file.
• -b1 - optional name of the first temporary branch that will be used to create a necessary merge conflict. By default, equals splitwithhistorytemporaryhistorybranch1.
• -b2 - optional name of the first temporary branch that will be used to create a necessary merge conflict. By default, equals splitwithhistorytemporaryhistorybranch2.

Words of caution

The branches specified by the -b1 and -b2 parameters will be created and deleted automatically.