vfile-location

Convert between positions (line and column-based) and offsets (range-based) locations in a virtual file.

Installation

npm:

npm install vfile-location

Usage

var vfile = require('vfile')
var vfileLocation = require('vfile-location')
 
var location = vfileLocation(vfile('foo\nbar\nbaz'))
 
var offset = location.toOffset({line: 3, column: 3}) // => 10
location.toPosition(offset) // => {line: 3, column: 3, offset: 10}

API

location = vfileLocation(doc)

Get transform functions for the given doc (string) or file.

Returns an object with toOffset and toPosition.

location.toOffset(position)

Get the offset (number) for a line and column-based position in the bound file. Returns -1 when given invalid or out of bounds input.

location.toPosition(offset)

Get the line and column-based position for offset in the bound file.

Contribute

See contributing.md in vfile/vfile for ways to get started.

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License

MIT © Titus Wormer