An Investigation of Copy-and-paste Reuse between Source Files Distributed under Different Licenses

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  • ソフトウェアライセンスがコピーアンドペーストによる再利用に与える影響の調査
  • ソフトウェア　ライセンス　ガ　コピー　アンド　ペースト　ニ　ヨル　サイリヨウ　ニ　アタエル　エイキョウ　ノ　チョウサ

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Abstract

Source code of open-source software (OSS) can be reused if a developer observe requirements of its license. There are many various licenses, therefore there are many various requirements to reuse source code. Then, we presume that this condition influences frequency of reusing source code and variety of software. To analyze an influence of license to reuse, we make a classification of copy-and-paste-this is the most basic method of reusing source code-in the basis of a license of a file which contains code snippet. In this paper, we performed preliminary experimental study that analyzes a small-scale set of source code by hand. The result shows that there is a difference of frequency of copy-and-paste between each license, and a couple of software which shares code snippet copy-and-pasted is characterized by its license.

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