indent-tree

Install

npm install indent-tree

Example

const indentTree = require('../');
const purdy = require('purdy');

let output = indentTree.parse(`
    first
        first child
    second
        second child 1
        second child 2
    third
        child
            sub child 1
            sub child 2
`);

purdy(output, {depth: 9, indent: 2});


//result
/*
{
  root: true,
  startLine: 1,
  subtree: [
    [0] {
      value: 'first',
      indent: '    ',
      depth: 0,
      lineNumber: 2,
      subtree: [
        [0] {
          value: 'first child',
          indent: '        ',
          depth: 1,
          lineNumber: 3,
          subtree: []
        }
      ]
    },
    [1] {
      value: 'second',
      indent: '    ',
      depth: 0,
      lineNumber: 4,
      subtree: [
        [0] {
          value: 'second child 1',
          indent: '        ',
          depth: 1,
          lineNumber: 5,
          subtree: []
        },
        [1] {
          value: 'second child 2',
          indent: '        ',
          depth: 1,
          lineNumber: 6,
          subtree: []
        }
      ]
    },
    [2] {
      value: 'third',
      indent: '    ',
      depth: 0,
      lineNumber: 7,
      subtree: [
        [0] {
          value: 'child',
          indent: '        ',
          depth: 1,
          lineNumber: 8,
          subtree: [
            [0] {
              value: 'sub child 1',
              indent: '            ',
              depth: 2,
              lineNumber: 9,
              subtree: []
            },
            [1] {
              value: 'sub child 2',
              indent: '            ',
              depth: 2,
              lineNumber: 10,
              subtree: []
            }
          ]
        }
      ]
    }
  ]
}

*/

API

indentTree.parse('', {
    //skip blank lines
    noBlankLines: true,
    //skip blank lines at the start
    noLeadingBlankLines: true,
    //make indent % indentDivision = 0
    //indentDivision should be an integer
    indentDivision: null,
    //where should lines start
    startLine: 1,
    //The matcher for indents
    space: /^[ ]*/,
    //Set tabToSpaces to an integer
    //That integer converts tabs into
    //that many spaces.
    tabToSpaces: null
});

options.indentDivision

When indentDivision is set to null the indent length of previous lines are used to regulate successive lines.

indentTree.parse() throws when indentDivision is set to an integer, and indent % indentDivision !== 0.

options.tabToSpaces

When tabToSpaces is set to null tabs will not be converted to spaces.

About

This is for looking at the structure of indented text, and using the result structure elsewhere.