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Disable for huge files #133 #202

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cc87d16
Disable editor formatting
J053Fabi0 Sep 8, 2025
18f0d6f
maxLinesInFile
J053Fabi0 Sep 8, 2025
268f04c
Update readme to add indentRainbow.maxLinesInFile
J053Fabi0 Sep 8, 2025
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7 changes: 6 additions & 1 deletion .vscode/settings.json
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Original file line number Diff line number Diff line change
Expand Up @@ -6,5 +6,10 @@
"search.exclude": {
"out": true // set this to false to include "out" folder in search results
},
"typescript.tsdk": "./node_modules/typescript/lib" // we want to use the TS server from our node_modules folder to control its version
"typescript.tsdk": "./node_modules/typescript/lib", // we want to use the TS server from our node_modules folder to control its version
"editor.formatOnSave": false,
"editor.formatOnPaste": false,
"editor.formatOnType": false,
"editor.defaultFormatter": null,
"eslint.enable": false
}
4 changes: 4 additions & 0 deletions README.md
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Expand Up @@ -33,6 +33,10 @@ Although you can use it as it is, there is the possibility to configure some asp

// The delay in ms until the editor gets updated.
"indentRainbow.updateDelay": 100 // 10 makes it super fast but may cost more resources

// Maximum number of lines for indent-rainbow to be active. When not set or null, there is no limit.
// By default it's set to null (no limit).
"indentRainbow.maxLinesInFile": 10000 // Improve performance by disabling on very large files
```

*Notice: Defining both `includedLanguages` and `excludedLanguages` does not make much sense. Use one of both!*
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5 changes: 5 additions & 0 deletions package.json
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Expand Up @@ -96,6 +96,11 @@
"type": "number",
"default": 1,
"description": "This property defines the indent indicator lineWidth when using light mode."
},
"indentRainbow.maxLinesInFile": {
"type": "integer",
"default": null,
"description": "Maximum number of lines in a file for indent-rainbow to be active. When not set or null, there is no limit."
}
}
}
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56 changes: 45 additions & 11 deletions src/extension.ts
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Expand Up @@ -15,25 +15,29 @@ export function activate(context: vscode.ExtensionContext) {

let activeEditor = vscode.window.activeTextEditor;

let config = vscode.workspace.getConfiguration('indentRainbow');

let maxLinesInFile = config.maxLinesInFile || null;

// Error color gets shown when tabs aren't right,
// e.g. when you have your tabs set to 2 spaces but the indent is 3 spaces
const error_color = vscode.workspace.getConfiguration('indentRainbow')['errorColor'] || "rgba(128,32,32,0.3)";
const error_color = config['errorColor'] || "rgba(128,32,32,0.3)";
const error_decoration_type = vscode.window.createTextEditorDecorationType({
backgroundColor: error_color
});

const tabmix_color = vscode.workspace.getConfiguration('indentRainbow')['tabmixColor'] || "";
const tabmix_color = config['tabmixColor'] || "";
const tabmix_decoration_type = "" !== tabmix_color ? vscode.window.createTextEditorDecorationType({
backgroundColor: tabmix_color
}) : null;

const ignoreLinePatterns = vscode.workspace.getConfiguration('indentRainbow')['ignoreLinePatterns'] || [];
const colorOnWhiteSpaceOnly = vscode.workspace.getConfiguration('indentRainbow')['colorOnWhiteSpaceOnly'] || false;
const indicatorStyle = vscode.workspace.getConfiguration('indentRainbow')['indicatorStyle'] || 'classic';
const lightIndicatorStyleLineWidth = vscode.workspace.getConfiguration('indentRainbow')['lightIndicatorStyleLineWidth'] || 1;
const ignoreLinePatterns = config['ignoreLinePatterns'] || [];
const colorOnWhiteSpaceOnly = config['colorOnWhiteSpaceOnly'] || false;
const indicatorStyle = config['indicatorStyle'] || 'classic';
const lightIndicatorStyleLineWidth = config['lightIndicatorStyleLineWidth'] || 1;

// Colors will cycle through, and can be any size that you want
const colors = vscode.workspace.getConfiguration('indentRainbow')['colors'] || [
const colors = config['colors'] || [
"rgba(255,255,64,0.07)",
"rgba(127,255,127,0.07)",
"rgba(255,127,255,0.07)",
Expand Down Expand Up @@ -104,7 +108,7 @@ export function activate(context: vscode.ExtensionContext) {
}

function indentConfig() {
var skiplang = vscode.workspace.getConfiguration('indentRainbow')['ignoreErrorLanguages'] || [];
var skiplang = config['ignoreErrorLanguages'] || [];
skipAllErrors = false;
if(skiplang.length !== 0) {
if(skiplang.indexOf('*') !== -1 || skiplang.indexOf(currentLanguageId) !== -1) {
Expand All @@ -116,8 +120,8 @@ export function activate(context: vscode.ExtensionContext) {
function checkLanguage() {
if (activeEditor) {
if(currentLanguageId !== activeEditor.document.languageId) {
var inclang = vscode.workspace.getConfiguration('indentRainbow')['includedLanguages'] || [];
var exclang = vscode.workspace.getConfiguration('indentRainbow')['excludedLanguages'] || [];
var inclang = config['includedLanguages'] || [];
var exclang = config['excludedLanguages'] || [];

currentLanguageId = activeEditor.document.languageId;
doIt = true;
Expand Down Expand Up @@ -154,14 +158,29 @@ export function activate(context: vscode.ExtensionContext) {
if (timeout) {
clearTimeout(timeout);
}
var updateDelay = vscode.workspace.getConfiguration('indentRainbow')['updateDelay'] || 100;
var updateDelay = config['updateDelay'] || 100;
timeout = setTimeout(updateDecorations, updateDelay);
}

function updateDecorations() {
if (!activeEditor) {
return;
}

// Check if file exceeds maximum line limit
if (maxLinesInFile !== null && activeEditor.document.lineCount > maxLinesInFile) {
// Clear any existing decorations when file is too large
var decor: vscode.DecorationOptions[] = [];
for (let decorationType of decorationTypes) {
activeEditor.setDecorations(decorationType, decor);
}
activeEditor.setDecorations(error_decoration_type, decor);
if (tabmix_decoration_type) {
activeEditor.setDecorations(tabmix_decoration_type, decor);
}
return;
}

var regEx = /^[\t ]+/gm;
var text = activeEditor.document.getText();
var tabSizeRaw = activeEditor.options.tabSize;
Expand Down Expand Up @@ -268,6 +287,11 @@ export function activate(context: vscode.ExtensionContext) {
tabmix_decoration_type && activeEditor.setDecorations(tabmix_decoration_type, tabmix_decorator);
clearMe = true;
}
function updateConfig() {
config = vscode.workspace.getConfiguration('indentRainbow');
maxLinesInFile = config.maxLinesInFile || null;
}

/**
* Listen for configuration change in indentRainbow section
* When anything changes in the section, show a prompt to reload
Expand All @@ -276,6 +300,16 @@ export function activate(context: vscode.ExtensionContext) {
vscode.workspace.onDidChangeConfiguration(configChangeEvent => {

if (configChangeEvent.affectsConfiguration('indentRainbow')) {
// Update maxLinesInFile immediately without requiring reload
if (configChangeEvent.affectsConfiguration('indentRainbow.maxLinesInFile')) {
updateConfig();
// Trigger decoration update with new settings
if (activeEditor && checkLanguage()) {
triggerUpdateDecorations();
}
return; // Don't show reload prompt for this setting
}

const actions = ['Reload now', 'Later'];

vscode.window
Expand Down