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FileHelper.cs
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FileHelper.cs
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// =================================================================================================
//
// Hammerc Library
// Copyright 2015 hammerc.org All Rights Reserved.
//
// See LICENSE for full license information.
//
// =================================================================================================
using System;
using System.IO;
using System.Text;
namespace HammercLib.Utils
{
/// <summary>
/// 文件工具类.
/// </summary>
public sealed class FileHelper
{
/// <summary>
/// 系统路径分隔符.
/// </summary>
public static readonly char SEPARATOR = Path.DirectorySeparatorChar;
/// <summary>
/// 系统换行符.
/// </summary>
public static readonly string LINE_SEPARATOR = Environment.NewLine;
/// <summary>
/// 保存数据到指定文件.
/// </summary>
/// <param name="path">文件完整路径名.</param>
/// <param name="bytes">要保存的数据.</param>
/// <returns>是否保存成功.</returns>
public static bool SaveAsBytes(string path, byte[] bytes)
{
FileStream fileStream = null;
try
{
fileStream = File.Open(path, FileMode.OpenOrCreate);
fileStream.Write(bytes, 0, bytes.Length);
fileStream.Flush();
fileStream.Close();
}
catch(Exception)
{
return false;
}
finally
{
if(fileStream != null)
{
fileStream.Dispose();
}
}
return true;
}
/// <summary>
/// 保存数据到指定文件.
/// </summary>
/// <param name="path">文件完整路径名.</param>
/// <param name="content">要保存的数据.</param>
/// <returns>是否保存成功.</returns>
public static bool SaveAsString(string path, string content)
{
return SaveAsString(path, content, Encoding.UTF8);
}
/// <summary>
/// 保存数据到指定文件.
/// </summary>
/// <param name="path">文件完整路径名.</param>
/// <param name="content">要保存的数据.</param>
/// <param name="encoding">编码格式.</param>
/// <returns>是否保存成功.</returns>
public static bool SaveAsString(string path, string content, Encoding encoding)
{
byte[] bytes = encoding.GetBytes(content);
return SaveAsBytes(path, bytes);
}
/// <summary>
/// 打开文件的简便方法.
/// </summary>
/// <param name="path">文件完整路径名.</param>
/// <returns>文件内容.</returns>
public static byte[] ReadAsBytes(string path)
{
byte[] bytes = null;
using(FileStream fileStream = File.Open(path, FileMode.Open))
{
bytes = new byte[fileStream.Length];
fileStream.Read(bytes, 0, (int)fileStream.Length);
fileStream.Close();
}
return bytes;
}
/// <summary>
/// 打开文件的简便方法.
/// </summary>
/// <param name="path">文件完整路径名.</param>
/// <returns>文件内容.</returns>
public static string ReadAsString(string path)
{
return ReadAsString(path, Encoding.UTF8);
}
/// <summary>
/// 打开文件的简便方法.
/// </summary>
/// <param name="path">文件完整路径名.</param>
/// <param name="encoding">编码格式.</param>
/// <returns>文件内容.</returns>
public static string ReadAsString(string path, Encoding encoding)
{
byte[] bytes = ReadAsBytes(path);
return encoding.GetString(bytes);
}
/// <summary>
/// 移动文件或目录.
/// </summary>
/// <param name="source">文件源路径.</param>
/// <param name="dest">文件要移动到的目标路径.</param>
/// <param name="overwrite">是否覆盖同名文件.</param>
/// <returns>是否移动成功.</returns>
public static bool MoveTo(string source, string dest, bool overwrite = true)
{
if(!overwrite && Exists(dest))
{
return false;
}
File.Move(source, dest);
return true;
}
/// <summary>
/// 复制文件或目录.
/// </summary>
/// <param name="source">文件源路径.</param>
/// <param name="dest">文件要移动到的目标路径.</param>
/// <param name="overwrite">是否覆盖同名文件.</param>
/// <returns>是否复制成功.</returns>
public static bool CopyTo(string source, string dest, bool overwrite = true)
{
if(!overwrite && Exists(dest))
{
return false;
}
File.Copy(source, dest);
return true;
}
/// <summary>
/// 删除文件或目录.
/// </summary>
/// <param name="path">要删除的文件源路径.</param>
/// <returns>是否删除成功.</returns>
public static bool DeletePath(string path)
{
if(!Exists(path))
{
return false;
}
if(IsDirectory(path))
{
Directory.Delete(path, true);
}
else
{
File.Delete(path);
}
return true;
}
/// <summary>
/// 获取文件的文件夹路径.
/// </summary>
/// <param name="path">指定文件.</param>
/// <returns>文件夹路径.</returns>
public static string GetDirectory(string path)
{
int separatePos = Math.Max(path.LastIndexOf('/'), path.LastIndexOf('\\'));
return separatePos == -1 ? path : path.Substring(0, separatePos);
}
/// <summary>
/// 获取路径的文件名或文件夹名.
/// </summary>
/// <param name="path">指定文件.</param>
/// <returns>对应的文件名或文件夹名.</returns>
public static string GetFileName(string path)
{
int separatePos = Math.Max(path.LastIndexOf('/'), path.LastIndexOf('\\'));
return separatePos == -1 ? path : path.Substring(separatePos + 1, path.Length);
}
/// <summary>
/// 获取文件扩展名.
/// </summary>
/// <param name="fileName">文件名.</param>
/// <returns>文件扩展名.</returns>
public static string GetFileExtension(string fileName)
{
int separatePos = fileName.LastIndexOf('.');
return separatePos == -1 ? fileName : fileName.Substring(separatePos + 1);
}
/// <summary>
/// 获取去掉扩展名的路径.
/// </summary>
/// <param name="path">指定文件.</param>
/// <returns>去掉扩展名的路径.</returns>
public static string GetNoneExtension(string path)
{
int separatePos = path.LastIndexOf('.');
return separatePos == -1 ? path : path.Substring(0, separatePos);
}
/// <summary>
/// 获取指定目录下的所有文件列表.
/// </summary>
/// <param name="path">指定目录.</param>
/// <param name="recursive">是否包含子目录.</param>
/// <returns>指定目录下的所有文件列表.</returns>
public static FileInfo[] GetFileList(string path, bool recursive = false)
{
return GetFileList(path, "*.*", recursive);
}
/// <summary>
/// 获取指定目录下的所有文件列表.
/// </summary>
/// <param name="path">指定目录.</param>
/// <param name="searchPattern">文件名过滤表达式.</param>
/// <param name="recursive">是否包含子目录.</param>
/// <returns>指定目录下的所有文件列表.</returns>
public static FileInfo[] GetFileList(string path, string searchPattern, bool recursive = false)
{
if(!IsDirectory(path))
{
throw new FileNotFoundException();
}
DirectoryInfo directoryInfo = new DirectoryInfo(path);
return directoryInfo.GetFiles(searchPattern, recursive ? SearchOption.AllDirectories : SearchOption.TopDirectoryOnly);
}
/// <summary>
/// 指定路径的文件或文件夹是否存在.
/// </summary>
/// <param name="path">指定路径的文件或文件夹.</param>
/// <returns>指定的文件或文件夹是否存在.</returns>
public static bool Exists(string path)
{
return File.Exists(path) || Directory.Exists(path);
}
/// <summary>
/// 判断指定路径是否为文件夹.
/// </summary>
/// <param name="path">指定路径的文件或文件夹.</param>
/// <returns>指定路径是否为文件夹.</returns>
public static bool IsDirectory(string path)
{
if(!Exists(path))
{
throw new FileNotFoundException();
}
FileInfo fileInfo = new FileInfo(path);
return (fileInfo.Attributes & FileAttributes.Directory) != 0;
}
/// <summary>
/// 创建指定的文件夹.
/// </summary>
/// <param name="path">文件夹路径.</param>
public static void CreateDirectoty(string path)
{
if(!Exists(path))
{
Directory.CreateDirectory(path);
}
}
/// <summary>
/// 格式化路径为当前系统可使用的路径, 去掉末尾的路径分隔符.
/// </summary>
/// <param name="path">带格式化的路径.</param>
/// <returns>格式化的路径.</returns>
public static string FormatPath(string path)
{
string separator = SEPARATOR.ToString();
if(separator == "\\")
{
separator = "\\\\";
}
path = path.Replace("\\\\", separator);
path = path.Replace("/", separator);
int index = path.LastIndexOf(SEPARATOR);
if (index == path.Length - 1)
{
path = path.Substring(0, path.Length - 1);
}
return path;
}
/// <summary>
/// 统一换行符为系统默认的换行符.
/// </summary>
/// <param name="source">带处理文本.</param>
/// <returns>处理后的文本.</returns>
public static string UnifyEnter(string source)
{
source = source.Replace("\\r\\n", "\r");
source = source.Replace("\\n", "\r");
source = source.Replace("\\r", LINE_SEPARATOR);
return source;
}
}
}