react-native-lib-cus-com
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react-native 自定义辅助组件库，完美的网路请求，带加载条，可上传、下载文件，等等多种ui，可自定义删除;可节省应用级软件的开发时间
260 lines (236 loc) • 8.02 kB
JavaScript
// import RNFS from "react-native-fs";
import {Components} from "./../StackComponent";
const RNFS = Components.react_native_fs;
import {Tools} from "./Tools";
/**
* 文件目录系统操作，
* 如：可复制文件目录到指定目录，读取文件目下所有文件及文件目录，可删除文件和文件目录
* **/
export class FileDirMgr{
/**
* 复制目录到指定目录
* @param sourceDir string,//源目录
* @param destDir string,//目标目录
* return Promise;
Promise resolve(results)回传数据
results = [
{
ctime: date, // The creation date of the file (iOS only)
mtime: date, // The last modified date of the file
name: string, // The name of the item
path: string, // The absolute path to the item
size: string, // Size in bytes
isFile: () => boolean, // Is the file just a file?
isDirectory: () => boolean // Is the file a directory?
}
.
.
.
];
* **/
static copyDir(sourceDir,destDir){
return new Promise(resolve => {
if(this.verfyComponent()){
console.info("sourceDir",sourceDir);
console.info("destDir",destDir);
this.readDir(sourceDir)
.then(results=>{
/*for(let i = 0;i < results.length;i++){
results[i].sourcePath = results[i].path;
}*/
results.forEach((v,i,a)=>{
v.sourcePath = v.path;
v.destPath = v.path.replace(sourceDir,destDir);
});
console.info("readDir",results);
this.copyFiles(results).then((results)=>resolve(results));
});
}
});
}
/**
* 读取目录下的所有文件
* @param path string,//文件夹路径
* return Promise;返回所有文件的路径
Promise resolve(results)回传数据
results = [
{
ctime: date, // The creation date of the file (iOS only)
mtime: date, // The last modified date of the file
name: string, // The name of the item
path: string, // The absolute path to the item
size: string, // Size in bytes
isFile: () => boolean, // Is the file just a file?
isDirectory: () => boolean // Is the file a directory?
}
.
.
.
];
* **/
static readDir(path){
return new Promise(resolve => {
if(this.verfyComponent()){
this.readDirFile(path,resolve);
}
});
}
/**
* 删除目录或文件
* @param path string;//文件或文件夹目录
* return Promise;
resolve(path);
* **/
static deleteDirOrFile (path) {
return new Promise((resolve) => {
if(this.verfyComponent()){
RNFS.unlink(path).then(() => {
console.info('FILE DELETED success',"success");
resolve(path);
}).catch((err) => {
console.info('FILE DELETED err',err);
resolve(path);
});
}
});
}
/**
* -------------------------------------------------------------------------------------------------------------------------------------------------
* **/
/**
* 读取目录下的所有文件
* @param path string,//文件夹路径
* @param resolve func,//回调函数
* @param files array,//resolve中返回的数据
* @param dirs array,//未读取的目录
files = [
{
ctime: date, // The creation date of the file (iOS only)
mtime: date, // The last modified date of the file
name: string, // The name of the item
path: string, // The absolute path to the item
size: string, // Size in bytes
isFile: () => boolean, // Is the file just a file?
isDirectory: () => boolean // Is the file a directory?
}
.
.
.
];
dirs = [
{
ctime: date, // The creation date of the file (iOS only)
mtime: date, // The last modified date of the file
name: string, // The name of the item
path: string, // The absolute path to the item
size: string, // Size in bytes
isFile: () => boolean, // Is the file just a file?
isDirectory: () => boolean // Is the file a directory?
}
.
.
.
];
* **/
static readDirFile(path,resolve,files=[],dirs=[]){
RNFS.readDir(path)
.then(results=>{
// console.info("results",results);
for(let i = 0; i < results.length; i++){
let item = results[i];
if(item.isDirectory()){
dirs.push(item);
}
else
{
files.push(item);
}
}
if(dirs.length > 0){
let item = dirs.pop();
this.readDirFile(item.path,resolve,files,dirs);
}
else
{
console.info("files",files);
resolve&&resolve(files);
}
});
}
/**
* 复制多个文件，文件存在则，重载
* @param fileList array,//源文件路径
* fileList = [
{
sourcePath:"",//string 源文件路径
destPath:"",//string 目标文件路径
}
.
.
.
];
* return Promise;
resolve(fileList);
* **/
static copyFiles(fileList=[]){
return new Promise((resolve, reject) => {
this.copyFileList(fileList,resolve);
});
}
/**
* 复制多个文件，文件存在则，重载
* @param fileList json,//源文件路径
* @param resolve func,//复制完成的回调函数
* @param index int,//复制文件的数组下标
* fileList = [{
sourcePath:"",//string 源文件路径
destPath:"",//string 目标文件路径
}...];
resolve(fileList);
* **/
static copyFileList(fileList=[],resolve,index=0){
if(index < fileList.length){
this.copyFile(fileList[index].sourcePath,fileList[index].destPath)
.then(()=>{
this.copyFileList(fileList,resolve,++index);
})
.catch(()=>{
this.copyFileList(fileList,resolve,++index);
});
}
else
{
resolve&&resolve(fileList);
}
}
/**
* 复制文件，文件存在则，重载
* @param sourcePath, string,//源文件路径
* @param destPath, string,//目标文件路径
* return Promise;
resolve(destPath,sourcePath)
* **/
static copyFile(sourcePath,destPath){
return new Promise((resolve, reject) => {
let dir = destPath.substring(0,destPath.lastIndexOf('/'));
this.deleteDirOrFile(destPath)
.then(()=>{
RNFS.mkdir(dir)
.then(()=>{
RNFS.copyFile(sourcePath,destPath)
.then(()=>resolve(destPath,sourcePath))
.catch(()=>reject());
});
});
});
}
static verfyComponent(){
let b = true;
if(!RNFS.DocumentDirectoryPath){
console.info("请安装文件操作组件","react-native-fs");
Tools.toast("请安装组件 react-native-fs");
b = false;
}
return b;
}
}