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import * as fs from 'fs'
import * as jsonc from 'jsonc-parser'
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 colors = new Map<string, TextMateRuleSettings>()
export function find(scope: string): TextMateRuleSettings | undefined {
return colors.get(scope)
}
// Load all textmate scopes in the currently active theme
export function load() {
// Remove any previous theme
colors.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) {
for (const extension of vscode.extensions.all) {
const extensionPath: string = extension.extensionPath
const extensionPackageJsonPath: string = path.join(extensionPath, 'package.json')
if (!checkFileExists(extensionPackageJsonPath)) {
continue
}
const packageJsonText: string = readFileText(extensionPackageJsonPath)
const packageJson: any = jsonc.parse(packageJsonText)
if (packageJson.contributes && packageJson.contributes.themes) {
for (const theme of packageJson.contributes.themes) {
const id = theme.id || theme.label
if (id === themeName) {
const themeRelativePath: string = theme.path
const themeFullPath: string = path.join(extensionPath, themeRelativePath)
loadThemeFile(themeFullPath)
}
}
}
}
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 = jsonc.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(defaultRule: TextMateRuleSettings, override: TextMateRuleSettings): TextMateRuleSettings {
const mergedRule = defaultRule;
if (override.background) {
mergedRule.background = override.background
}
if (override.foreground) {
mergedRule.foreground = override.foreground
}
if (override.background) {
mergedRule.fontStyle = override.fontStyle
}
return mergedRule;
}
function loadColors(textMateRules: TextMateRule[]): void {
for (const rule of textMateRules) {
if (typeof rule.scope === 'string') {
const existingRule = colors.get(rule.scope);
if (existingRule) {
colors.set(rule.scope, mergeRuleSettings(existingRule, rule.settings))
}
else {
colors.set(rule.scope, rule.settings)
}
} else if (rule.scope instanceof Array) {
for (const scope of rule.scope) {
const existingRule = colors.get(scope);
if (existingRule) {
colors.set(scope, mergeRuleSettings(existingRule, rule.settings))
}
else {
colors.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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