using System;
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using System.IO;
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namespace Shared.IO
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{
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/// <summary>
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/// 文件类
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/// </summary>
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public static class FileUtils
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{
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/// <summary>
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/// 删除文件
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/// </summary>
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/// <param name="path">Path.</param>
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public static void DeleteFile(string path)
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{
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System.IO.File.Delete (path);
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}
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/// <summary>
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/// 从资源文件里获取文件
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/// </summary>
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/// <returns>The stream from resource.</returns>
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/// <param name="path">Path.</param>
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public static System.IO.Stream GetStreamFromResource(string path)
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{
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return new FileStream (path, FileMode.Open, FileAccess.Read);
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}
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/// <summary>
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/// 根目录路径
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/// </summary>
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public static readonly string RootPath=Application.RootPath;
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/// <summary>
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/// Writes the file by bytes.
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/// </summary>
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/// <returns><c>true</c>, if file by bytes was writed, <c>false</c> otherwise.</returns>
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/// <param name="fileName">File name.</param>
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/// <param name="bytes">Bytes.</param>
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public static bool WriteFileByBytes(string fileName, byte []bytes)
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{
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if (fileName == null || (fileName = fileName.Trim ()) == ("")) {
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return false;
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}
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System.IO.FileStream fs = null;
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try {
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fs = new FileStream (System.IO.Path.Combine (RootPath, fileName), FileMode.Create, FileAccess.Write);
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fs.Write (bytes, 0, bytes.Length);
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fs.Flush ();
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return true;
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} catch {
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return false;
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} finally {
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try {
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if (fs != null) {
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fs.Close ();
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}
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} catch {
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}
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}
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}
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/// <summary>
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/// Writes the file by input stream.
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/// </summary>
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/// <returns><c>true</c>, if file by input stream was writed, <c>false</c> otherwise.</returns>
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/// <param name="fileName">File name.</param>
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/// <param name="inputStream">Input stream.</param>
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public static bool WriteFileByInputStream(string fileName, System.IO.Stream inputStream)
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{
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if (fileName == null || (fileName = fileName.Trim ()) == ("")) {
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return false;
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}
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System.IO.FileStream fs = null;
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try {
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fs = new FileStream (System.IO.Path.Combine (RootPath, fileName), FileMode.Create, FileAccess.Write);
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byte[] buffer = new byte[4 * 1024];
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int length = 0;
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while ((length = inputStream.Read (buffer, 0, buffer.Length)) != 0) {
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fs.Write (buffer, 0, length);
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fs.Flush ();
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}
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return true;
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} catch {
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return false;
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} finally {
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try {
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if (fs != null) {
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fs.Close ();
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}
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} catch {
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}
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}
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}
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/// <summary>
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/// 读取图片文件
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/// </summary>
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/// <returns>The file.</returns>
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/// <param name="fileName">File name.</param>
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public static byte []ReadImage1(string fileName)
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{
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string tempfileName = fileName;
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//暂时不处理pad图片，先用phone图片
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//if (Shared.Application.IsPad)
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// {
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// fileName = "Pad/" + fileName;
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//}
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//else
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{
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fileName = "Phone/" + fileName;
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}
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System.IO.FileStream fs = null;
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try {
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var filePath = Foundation.NSBundle.MainBundle.PathForResource(fileName, null);
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if (filePath!=null){
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fs = new FileStream(filePath, FileMode.Open, FileAccess.Read);
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}
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else if (System.IO.File.Exists (System.IO.Path.Combine (Application.RootPath, tempfileName))) {
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fs = new FileStream (System.IO.Path.Combine (Application.RootPath, tempfileName), FileMode.Open, FileAccess.Read);
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}
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//资源文件里的文件
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else if (System.IO.File.Exists (fileName)) {
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fs = new FileStream (fileName, FileMode.Open, FileAccess.Read);
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} else {
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return new byte[0];
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}
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byte[] bytes = new byte[fs.Length];
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fs.Read (bytes, 0, bytes.Length);
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return bytes;
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} catch {
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return new byte[0];
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} finally {
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try {
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if (fs != null) {
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fs.Close ();
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}
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} catch {
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}
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}
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}
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/// <summary>
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/// 读取图片文件路径
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/// </summary>
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/// <returns>The file.</returns>
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/// <param name="fileName">File name.</param>
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public static string GetImageFilePath(string fileName)
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{
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if(fileName==null)
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{
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return "";
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}
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//可能是提交了完整的路径过来
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if (System.IO.File.Exists(fileName))
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{
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return fileName;
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}
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// 先找是否是用户已经更改过的图片，这个是优先选择
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if (System.IO.File.Exists(System.IO.Path.Combine(Application.RootPath, fileName)))
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{
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return System.IO.Path.Combine(Application.RootPath, fileName);
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}
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string newFileName = null;
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if (Application.Skin == null)
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{
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newFileName = "Phone/" + fileName;
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}
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else
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{
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newFileName = Application.Skin + "/" + fileName;
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}
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//data 目录下查找 ，有可能是多皮肤的数据
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if (System.IO.File.Exists(System.IO.Path.Combine(Application.RootPath, newFileName)))
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{
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return System.IO.Path.Combine(Application.RootPath, newFileName);
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}
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//Resource目录下查找
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var filePath = Foundation.NSBundle.MainBundle.PathForResource(newFileName, null);
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if (filePath != null)
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{
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return filePath;
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}
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return "";
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////资源文件里的文件
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//else if (System.IO.File.Exists(fileName))
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//{
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// return fileName;
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//}
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//else
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//{
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// return "";
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//}
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}
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/// <summary>
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/// Reads the string list.
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/// </summary>
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/// <returns>The string list.</returns>
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/// <param name="fileName">File name.</param>
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/// <param name="encoding">Encoding.</param>
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public static System.Collections.Generic.List<string> ReadStringList(string fileName,System.Text.Encoding encoding)
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{
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System.Collections.Generic.List<string> stringList = new System.Collections.Generic.List<string> ();
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System.IO.StreamReader fs = null;
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try {
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var filePath = Foundation.NSBundle.MainBundle.PathForResource(fileName, null);
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if (filePath != null)
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{
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fs = new StreamReader(filePath, encoding);
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}
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else if (System.IO.File.Exists (System.IO.Path.Combine (RootPath, fileName))) {
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fs = new StreamReader (System.IO.Path.Combine (RootPath, fileName),encoding);
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} else if (System.IO.File.Exists (fileName)) {
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fs = new StreamReader (fileName,encoding);
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} else {
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return stringList;
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}
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string s;
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while(null!=(s=fs.ReadLine()))
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{
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stringList.Add(s);
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}
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return stringList;
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} catch {
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return stringList;
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} finally {
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try {
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if (fs != null) {
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fs.Close ();
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}
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} catch {
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}
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}
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}
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/// <summary>
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/// Reads the file.
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/// </summary>
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/// <returns>The file.</returns>
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/// <param name="fileName">File name.</param>
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public static byte []ReadFile(string fileName)
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{
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System.IO.FileStream fs = null;
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try {
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var filePath = Foundation.NSBundle.MainBundle.PathForResource(fileName, null);
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if (filePath != null)
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{
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fs = new FileStream(filePath, FileMode.Open, FileAccess.Read);
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}
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else if (System.IO.File.Exists (System.IO.Path.Combine (RootPath, fileName))) {
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fs = new FileStream (System.IO.Path.Combine (RootPath, fileName), FileMode.Open, FileAccess.Read);
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} else if (System.IO.File.Exists (fileName)) {
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fs = new FileStream (fileName, FileMode.Open, FileAccess.Read);
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} else {
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return new byte[0];
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}
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byte[] bytes = new byte[fs.Length];
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fs.Read (bytes, 0, bytes.Length);
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return bytes;
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} catch {
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return new byte[0];
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} finally {
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try {
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if (fs != null) {
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fs.Close ();
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}
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} catch {
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}
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}
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}
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}
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}
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