line-editor

This is a simple edit tool for a text file. Change each line in the stream, using a javaScript snippet to rebuild these lines.

Please install Golang if you do not have Golang already installed.

• Add GOPATH/bin to your PATH:
  • for bash: echo '\nexport PATH=$PATH:$(go env GOPATH)/bin' >> ~/.bashrc && source ~/.bashrc
  • for zsh: echo '\nexport PATH=$PATH:$(go env GOPATH)/bin' >> ~/.zshrc && source ~/.zshrc
• Install line-editor:
  • Golang 1.16<=: go get github.com/AntonStolov/line-editor
  • Golang >=1.17: go install github.com/AntonStolov/line-editor@latest

How to use:

• Select file using '--file' flag
• Write javascript code to change each line from the file using '--script' flag
  • or prepare a javascript file and provide a path to this file using '--script-file' flag

Code variables

• input - current line
• LineBefore - line before current

Example:

Replace commas in the CSV file to the pipelines '|' if the number of rows equals 4

line-editor \
  --file test.csv \
  --script "String(input).split(',').length == 4 ? String(input).split(',').join('|') : ',,,'"