shelp - brief introduction

Open Go Friday #7 で発表した資料です。
https://connpass.com/event/180488/

Transcript

1. "shelp" - A package manager for shell scripts - @progrhyme 2020-06-26 Open Go Friday #7
2. About Me • @progrhyme • HP: progrhy.me • Career ◦ 〜2017 Oct. @DeNA ◦ 〜2019 Dec. @M3 ◦ 〜Now @MonotaRO • Revisited the tour of Go recently 2
3. What is "shelp"? • https://github.com/progrhyme/shelp • Git-based package manager for shell scripts • Install, update packages by `git` command • Commandline tool • Supports fish shell, Zsh, Bash and more 3
4. DEMO 4
5. Implementation • spf13/pflag to parse command-line flags • Directory layout: ◦ github.com/progrhyme/shelp ... CLI package ▪ internal/ ... All internal packages ◦ Don't suppose to be used as library for now 5
6. What I struggled with the most • A number of "types" to define to implement similar but various "command" and "option" objects ◦ 34 types in "internal/cli" package ◦ There may be better ways • Felt like making boilerplates ... • `gorename` helped me a lot to refine their naming (about 30 times or so) 6
7. Coming up Next • "shelp" ◦ Command completion • More Go CLIs 7
8. Conclusion • Go is convenient to make cross-platform application like CLI • Try "shelp" if you like 8
9. Thank you 9
10. Related Links 10 • https://go-shelp.netlify.app/ ◦ "shelp" Documentation • シェルスクリプトのパッケージ管理ツール「shelp」をGo言 語で作った - progrhyme's tech blog