How to find the current line?

Feature Requests
1

If I use selectedRanges it gives me information like [1915, 1916] instead of the line number which is 72

2

The TextEditor selectedRange is showing selected characters. Have you tried feeding this Range to the getLineRangeForRange method?

editor.getLineRangeForRange(editor.selectedRange)
3

Sadly that doesn’t gives what I want.

On line 10 I get

console.log(editor.selectedRange) - [123, 124]
console.log(editor.getLineRangeForRange(editor.selectedRange)) - [83, 124]

I want just the number 10…

Edit: The following kind of works but it seems to hacky

var hackRange = new Range(0, editor.selectedRange.end-1)

var selectedText = editor.getTextInRange(hackRange);
var currentLineNumber = selectedText.split(/\r\n|\r|\n/).length;

There should be a more easy wait to get the current line number/row and some cases the column

4

That’s pretty much what I was going to suggest:

let newlines =
  editor
    .getTextInRange(new Range(0, editor.selectedRange.end))
    .match(/\n/g) || [];
console.log(`Line: ${newlines.length + 1}`);

I don’t see a convenience method either.

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5

Does that gives the correct line for you? For me it shows one line more than the correct one… for example at line number 79 it prints 80. Thats why I subtracted 1 from the range.

6

I saw the correct line number. I didn’t try with line endings besides macOS/Unix LF. Also, my test code ran on text entry, not a text selection (a selection might have included the line ending of current line for you).

7

We currently have an outstanding API feature request for direct access to line and column information. We hope to get to this soon!

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8

I just saw this today — and it’s awesome to know that Panic’s addressing this!! — but, in the meantime, you could do the end-of-line checking more conveniently with .eol, a document property which should correctly identify whatever end-of-line character is being used on the current document.

Kudos to the ever-amazing @apexskier for using that nifty feature on his own extensions!

2 Likes
9

Is 2023 and looking at the documentation there still no means to easily get the line number from a range. Move a cursor to a line number. Move the cursor to a row/col or set the selection using row, col.

Is there anything new?

10

Here’s the code I use for getting the line & column number of the cursor position:

  const text = editor.document.getTextInRange(new Range(0, editor.document.length))
  const cursorPosition = editor.selectedRange.start
  const lines = text.slice(0, cursorPosition).split('\n')
  const line = lines.length
  const column = lines.slice(-1)[0].length + 1

I wonder if we (the community) should make an open source JS library of useful functions for Nova extension authors?

1 Like