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unist-util-to-list-of-char

v0.1.3

Published

functionality that helps generating list of characters in all visible text inside give node tree

Downloads

5,252

Readme

unist-util-to-list-of-char

Provide API to provide list of each character inside unist node tree.

Installation

npm install unist-util-to-list-of-char

Usage

var remark = require('remark');
var toList = require('unist-util-to-list-of-char');

var tree = remark().parse('Some _emphasis_, **importance**, and `code`.');

function callback(list) {
  console.log(list);
}

toList(tree, 'root', callback);

Yields

[
  { value: 'S', line: 1, column: 1, offset: 0 },
  { value: 'o', line: 1, column: 2, offset: 1 },
  { value: 'm', line: 1, column: 3, offset: 2 },
  { value: 'e', line: 1, column: 4, offset: 3 },
  { value: ' ', line: 1, column: 5, offset: 4 },
  { value: 'e', line: 1, column: 7, offset: 6 },
  { value: 'm', line: 1, column: 8, offset: 7 },
  { value: 'p', line: 1, column: 9, offset: 8 },
  { value: 'h', line: 1, column: 10, offset: 9 },
  { value: 'a', line: 1, column: 11, offset: 10 },
  { value: 's', line: 1, column: 12, offset: 11 },
  { value: 'i', line: 1, column: 13, offset: 12 },
  { value: 's', line: 1, column: 14, offset: 13 },
  { value: ',', line: 1, column: 16, offset: 15 },
  { value: ' ', line: 1, column: 17, offset: 16 },
  { value: 'i', line: 1, column: 20, offset: 19 },
  { value: 'm', line: 1, column: 21, offset: 20 },
  { value: 'p', line: 1, column: 22, offset: 21 },
  { value: 'o', line: 1, column: 23, offset: 22 },
  { value: 'r', line: 1, column: 24, offset: 23 },
  { value: 't', line: 1, column: 25, offset: 24 },
  { value: 'a', line: 1, column: 26, offset: 25 },
  { value: 'n', line: 1, column: 27, offset: 26 },
  { value: 'c', line: 1, column: 28, offset: 27 },
  { value: 'e', line: 1, column: 29, offset: 28 },
  { value: ',', line: 1, column: 32, offset: 31 },
  { value: ' ', line: 1, column: 33, offset: 32 },
  { value: 'a', line: 1, column: 34, offset: 33 },
  { value: 'n', line: 1, column: 35, offset: 34 },
  { value: 'd', line: 1, column: 36, offset: 35 },
  { value: ' ', line: 1, column: 37, offset: 36 },
  { value: 'c', line: 1, column: 38, offset: 37 },
  { value: 'o', line: 1, column: 39, offset: 38 },
  { value: 'd', line: 1, column: 40, offset: 39 },
  { value: 'e', line: 1, column: 41, offset: 40 },
  { value: '.', line: 1, column: 44, offset: 43 },
]

API

toList(tree[, test], callback)

This function will iterate through given tree to generate list of characters from text.

If test is provided, only subset of tree will be used. callback might be triggered multiple times if there are multiple sub-trees.

callback function will be triggered by given a list of nodes with following structure:

{
  value: 'c', // current character
  column: 1,  // column number of this character
  line: 1,    // line number of this character
  offset: 1,  // offset number of this character
}

License

MIT © LaySent