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import * as fs from 'fs'
import * as path from 'path'
import * as vscode from 'vscode'
export interface TextMateRule {
scope: string | string[]
settings: TextMateRuleSettings
}
export interface TextMateRuleSettings {
foreground: string | undefined
background: string | undefined
fontStyle: string | undefined
}
// Current theme colors
const rules = new Map<string, TextMateRuleSettings>()
export function find(scope: string): TextMateRuleSettings | undefined {
return rules.get(scope)
}
// Load all textmate scopes in the currently active theme
export function load() {
// Remove any previous theme
rules.clear()
// Find out current color theme
const themeName = vscode.workspace.getConfiguration('workbench').get('colorTheme')
if (typeof themeName !== 'string') {
// console.warn('workbench.colorTheme is', themeName)
return
}
// Try to load colors from that theme
try {
loadThemeNamed(themeName)
} catch (e) {
// console.warn('failed to load theme', themeName, e)
}
}
// Find current theme on disk
function loadThemeNamed(themeName: string) {
const themePaths = vscode.extensions.all
.filter(extension => extension.extensionKind === vscode.ExtensionKind.UI)
.filter(extension => extension.packageJSON.contributes)
.filter(extension => extension.packageJSON.contributes.themes)
.reduce((list, extension) => {
const paths = extension.packageJSON.contributes.themes
.filter((element: any) => (element.id || element.label) === themeName)
.map((element: any) => path.join(extension.extensionPath, element.path))
return list.concat(paths)
}, Array<string>());
themePaths.forEach(loadThemeFile);
const customization: any = vscode.workspace.getConfiguration('editor').get('tokenColorCustomizations');
if (customization && customization.textMateRules) {
loadColors(customization.textMateRules)
}
}
function loadThemeFile(themePath: string) {
if (checkFileExists(themePath)) {
const themeContentText: string = readFileText(themePath)
const themeContent: any = JSON.parse(themeContentText)
if (themeContent && themeContent.tokenColors) {
loadColors(themeContent.tokenColors)
if (themeContent.include) {
// parse included theme file
const includedThemePath: string = path.join(path.dirname(themePath), themeContent.include)
loadThemeFile(includedThemePath)
}
}
}
}
function mergeRuleSettings(defaultSetting: TextMateRuleSettings, override: TextMateRuleSettings): TextMateRuleSettings {
const mergedRule = defaultSetting;
mergedRule.background = override.background || defaultSetting.background
mergedRule.foreground = override.foreground || defaultSetting.foreground
mergedRule.fontStyle = override.fontStyle || defaultSetting.foreground;
return mergedRule;
}
function loadColors(textMateRules: TextMateRule[]): void {
for (const rule of textMateRules) {
if (typeof rule.scope === 'string') {
const existingRule = rules.get(rule.scope);
if (existingRule) {
rules.set(rule.scope, mergeRuleSettings(existingRule, rule.settings))
}
else {
rules.set(rule.scope, rule.settings)
}
} else if (rule.scope instanceof Array) {
for (const scope of rule.scope) {
const existingRule = rules.get(scope);
if (existingRule) {
rules.set(scope, mergeRuleSettings(existingRule, rule.settings))
}
else {
rules.set(scope, rule.settings)
}
}
}
}
}
function checkFileExists(filePath: string): boolean {
const stats = fs.statSync(filePath);
if (stats && stats.isFile()) {
return true;
} else {
// console.warn('no such file', filePath)
return false;
}
}
function readFileText(filePath: string, encoding: string = 'utf8'): string {
return fs.readFileSync(filePath, encoding);
}
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