electron/lib/renderer/extensions/i18n.js

60 lines
1.7 KiB
JavaScript

'use strict'
// Implementation of chrome.i18n.getMessage
// https://developer.chrome.com/extensions/i18n#method-getMessage
//
// Does not implement predefined messages:
// https://developer.chrome.com/extensions/i18n#overview-predefined
const ipcRendererUtils = require('@electron/internal/renderer/ipc-renderer-internal-utils')
const getMessages = (extensionId) => {
try {
const data = ipcRendererUtils.invokeSync('CHROME_GET_MESSAGES', extensionId)
return JSON.parse(data) || {}
} catch {
return {}
}
}
const replaceNumberedSubstitutions = (message, substitutions) => {
return message.replace(/\$(\d+)/, (_, number) => {
const index = parseInt(number, 10) - 1
return substitutions[index] || ''
})
}
const replacePlaceholders = (message, placeholders, substitutions) => {
if (typeof substitutions === 'string') {
substitutions = [substitutions]
}
if (!Array.isArray(substitutions)) {
substitutions = []
}
if (placeholders) {
Object.keys(placeholders).forEach((name) => {
let { content } = placeholders[name]
content = replaceNumberedSubstitutions(content, substitutions)
message = message.replace(new RegExp(`\\$${name}\\$`, 'gi'), content)
})
}
return replaceNumberedSubstitutions(message, substitutions)
}
const getMessage = (extensionId, messageName, substitutions) => {
const messages = getMessages(extensionId)
if (messages.hasOwnProperty(messageName)) {
const { message, placeholders } = messages[messageName]
return replacePlaceholders(message, placeholders, substitutions)
}
}
exports.setup = (extensionId) => {
return {
getMessage (messageName, substitutions) {
return getMessage(extensionId, messageName, substitutions)
}
}
}