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detect-indent

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detect-indent - npm Package Compare versions

Comparing version
2.0.0
 to
3.0.0
+59
-26
index.js
'use strict';
var repeating = require('repeating');

@@ -7,4 +8,22 @@ // detect either spaces or tabs but not both to properly handle tabs

var repeating = require('repeating');
function getMostUsed(indents) {
var result = 0;
var maxUsed = 0;
var maxWeight = 0;
for (var n in indents) {
var indent = indents[n];
var u = indent[0];
var w = indent[1];
if (u > maxUsed || u === maxUsed && w > maxWeight) {
maxUsed = u;
maxWeight = w;
result = +n;
}
}
return result;
}
module.exports = function (str) {

@@ -15,12 +34,26 @@ if (typeof str !== 'string') {

// used to if tabs or spaces are the most used
var t = 0;
var s = 0;
// used to see if tabs or spaces are the most used
var tabs = 0;
var spaces = 0;
// remember the indentation used for the previous line
// remember the size of previous line's indentation
var prev = 0;
// remember how much a given indentation size was used
// remember how many indents/unindents as occurred for a given size
// and how much lines follow a given indentation
//
// indents = {
// 3: [1, 0],
// 4: [1, 5],
// 5: [1, 0],
// 12: [1, 0],
// }
var indents = {};
// pointer to the array of last used indent
var current;
// whether the last action was an indent (opposed to an unindent)
var isIndent;
str.split(/\n/g).forEach(function (line) {

@@ -32,5 +65,5 @@ if (!line) {

var indent;
var matches = line.match(INDENT_RE);
var indent;
if (!matches) {

@@ -42,30 +75,30 @@ indent = 0;

if (matches[1]) {
// spaces were used
s++;
spaces++;
} else {
// tabs were used
t++;
tabs++;
}
}
var diff = Math.abs(indent - prev);
var diff = indent - prev;
prev = indent;
if (diff) {
// an indent or deindent has been detected
indents[diff] = (indents[diff] || 0) + 1;
// an indent or unindent has been detected
isIndent = diff > 0;
current = indents[isIndent ? diff : -diff];
if (current) {
current[0]++;
} else {
current = indents[diff] = [1, 0];
}
} else if (current) {
// if the last action was an indent, increment the weight
current[1] += +isIndent;
}
});
// find most frequent indentation
var amount = 0;
var max = 0;
var n;
for (var diff in indents) {
n = indents[diff];
if (n > max) {
max = n;
amount = +diff;
}
}
var amount = getMostUsed(indents);

@@ -77,3 +110,3 @@ var type;

actual = '';
} else if (s >= t) {
} else if (spaces >= tabs) {
type = 'space';

@@ -80,0 +113,0 @@ actual = repeating(' ', amount);

+1
-1
package.json
{
"name": "detect-indent",
"version": "2.0.0",
"version": "3.0.0",
"description": "Detect the indentation of code",

@@ -5,0 +5,0 @@ "license": "MIT",