File Line Replacer for NodeJS

The following document applies to the command-line usage of file-line-replacer. For usage directly in a Node application, please see the alternate README located here.

Purpose

Matches multiple lines within large text files and replaces those lines with another set of lines while optionally preserving whitespace. Both the old and new sets of lines may be passed in or read from a file. Of course, the original file may be automatically backed up, if desired.

Installation

npm i -g file-line-replacer

Usage

Tweak a single file ...

file-line-replacer \
  --source-file "/Volumes/Source/my-project/models/cat.model.js" \
  --old-lines "allowNull: false,|primaryKey: true"
  --new-lines "autoIncrement: true,|primaryKey: true" \
  --overwrite

... or, search entire directories for eligible files ...

file-line-replacer \
  --search-dir "/Users/flackey/my-project/src/data/models" \
  --backup-dir "/Users/flackey/my-project/_backup" \
  --old-lines "allowNull: false,|primaryKey: true" \
  --new-lines "autoIncrement: true,|primaryKey: true" \
  --overwrite

Parameters

Name	Description	Type	Default
backup-dir	Backup Directory	string (path)
backup-dir-date	Append Date Flag for Backup Directory	boolean	true
case-sensitive	Case Sensitive Flag	boolean	false
delimiter	Delimeter Character(s)		|
destination-dir	Destination Directory	string (path)	(function)
destination-file	Destination File	string (path)	(function)
empty-lines	Preserve Empty Lines Flag	boolean	false
empty-lines-new	Preserve Empty for New Files Lines Flag	boolean	(function)
empty-lines-old	Preserve Empty for Old Files Lines Flag	boolean	(function)
ignore-patterns	Ignore Pattern(s)	string | string[]
ignore-patterns-delimiter	Ignore Patterns Delimeter		(function)
ignore-patterns-file	Ignore Patterns File	string (path)
make-dirs	Make Directories Flag	boolean	true
match-whitespace	Match Whitespace Flag	boolean	false
new-lines	New Line(s)	string | string[]
new-lines-delimiter	New Lines Delimeter		(function)
new-lines-file	New Lines File	string (path)
old-lines	Old Line(s)	string | string[]
old-lines-delimiter	Old Lines Delimeter		(function)
old-lines-file	Old Lines File	string (path)
overwrite	Overwrite Files Flag	boolean	false
preserve-whitespace	Preserve Whitespace Flag	boolean	true
search-dir	Search Directory	string (path)
search-patterns	Search Pattern(s)
search-patterns-file	Search Patterns File	string (path)
source-file	Source File	string (path)
temp-dir	Custom Temp Directory	string (path)	(function)

Contact

Please feel free to contact me directly with any questions, comments, or enhancement requests:

Fred Lackey
fred.lackey@gmail.com
http://fredlackey.com