cordova-cordova-plugin-file

/**

• @param {String} basePath 文件更目录，如cordova.file.externalApplicationStorageDirectory、cordova.file.externalRootDirectory、cordova.file.externalDataDirectory、cordova.file.documentsDirectory
• @param {String} folderName 文件夹名
• @param {String} folderName 文件名
• @description 创建文件，并返回文件的全路径，基于promise
  */

export default async (basePath, folderName, fileName) => {
const appPath = basePath + folderName,
isExistDirectory = () => {
// 判断文件夹存不存在，不存在这创建文件夹，返回文件夹路径，如果创建失败则终止操作
return new Promise(resolve => {
window.resolveLocalFileSystemURL(appPath, app_path => {
resolve(app_path)
}, () => {
window.resolveLocalFileSystemURL(basePath, base_path => {
base_path.getDirectory(folderName, {
create: true
}, app_path => {
resolve(app_path)
}, () => {
resolve()
})
}, () => {
resolve()
})
})
})
},
app_path = await isExistDirectory(),
createFile = () => {
// 判断文件存不存在，不存在这创建文件，返回文件路径，存在直接返回路径
return new Promise(resolve => {
if (!app_path) {
resolve()
return
}
app_path.getFile(fileName, {
create: true,
exclusive: true
}, file_path => {
resolve(file_path.toURL())
}, () => {
resolve(app_path.toURL() + fileName)
})
})
}
return createFile()
}