需要下载ICSharpCode.SharpZipLib.dll
1 using System;
2 using System.Collections.Generic;
3 using System.Linq;
4 using System.Text;
5 using System.Threading.Tasks;
6
7 using System.IO;
8 using ICSharpCode.SharpZipLib.Checksums;
9 using ICSharpCode.SharpZipLib.Zip;
10 using ICSharpCode.SharpZipLib.GZip;
11
12 namespace ZYOfficeWrap
13 {
14
15 /// <summary>
16 /// 压缩文件格式
17 /// </summary>
18
19 public enum fileType
20 {
21 Zip = 1,
22 RAR = 2,
23 Tar =3
24 }
25 /// <summary>
26 /// 文件解压缩操作类库
27 /// </summary>
28 public class FileZipOpr
29 {
30 /// <summary>
31 /// 构造函数
32 /// </summary>
33 public FileZipOpr()
34 {
35
36 }
37
38 /// <summary>
39 /// 压缩单个文件
40 /// </summary>
41 /// <param name="fileToZip">要压缩的文件</param>
42 /// <param name="zipedFile">压缩后的文件</param>
43 /// <param name="compressionLevel">压缩等级</param>
44 /// <param name="blockSize">每次写入大小</param>
45 public void ZipFile(string fileToZip, string zipedFile, int compressionLevel, int blockSize)
46 {
47 //如果文件没有找到，则报错
48 if (!File.Exists(fileToZip))
49 {
50 throw new System.IO.FileNotFoundException("指定要压缩的文件: " + fileToZip + " 不存在!");
51 }
52
53 using (FileStream ZipFile = File.Create(zipedFile))
54 {
55 using (ZipOutputStream ZipStream = new ZipOutputStream(ZipFile))
56 {
57 using (FileStream StreamToZip = new FileStream(fileToZip, FileMode.Open, FileAccess.Read))
58 {
59 string fileName = fileToZip.Substring(fileToZip.LastIndexOf("\\") + 1);
60 ZipEntry ZipEntry = new ZipEntry(fileName);
61 ZipStream.PutNextEntry(ZipEntry);
62 ZipStream.SetLevel(compressionLevel);
63 byte[] buffer = new byte[blockSize];
64 int sizeRead = 0;
65 try
66 {
67 do
68 {
69 sizeRead = StreamToZip.Read(buffer, 0, buffer.Length);
70 ZipStream.Write(buffer, 0, sizeRead);
71 }
72 while (sizeRead > 0);
73 }
74 catch (System.Exception ex)
75 {
76 throw ex;
77 }
78 StreamToZip.Close();
79 }
80
81 ZipStream.Finish();
82 ZipStream.Close();
83 }
84 ZipFile.Close();
85 }
86 }
87
88 /// <summary>
89 /// 压缩单个文件
90 /// </summary>
91 /// <param name="fileToZip">要进行压缩的文件名</param>
92 /// <param name="zipedFile">压缩后生成的压缩文件名</param>
93 public void ZipFile(string fileToZip, string zipedFile)
94 {
95 //如果文件没有找到，则报错
96 if (!File.Exists(fileToZip))
97 {
98 throw new System.IO.FileNotFoundException("指定要压缩的文件: " + fileToZip + " 不存在!");
99 }
100
101 using (FileStream fs = File.OpenRead(fileToZip))
102 {
103 byte[] buffer = new byte[fs.Length];
104 fs.Read(buffer, 0, buffer.Length);
105 fs.Close();
106
107 using (FileStream ZipFile = File.Create(zipedFile))
108 {
109 using (ZipOutputStream ZipStream = new ZipOutputStream(ZipFile))
110 {
111 string fileName = fileToZip.Substring(fileToZip.LastIndexOf("\\") + 1);
112 ZipEntry ZipEntry = new ZipEntry(fileName);
113 ZipStream.PutNextEntry(ZipEntry);
114 ZipStream.SetLevel(5);
115
116 ZipStream.Write(buffer, 0, buffer.Length);
117 ZipStream.Finish();
118 ZipStream.Close();
119 }
120 }
121 }
122 }
123
124 /// <summary>
125 /// 压缩多层目录
126 /// </summary>
127 /// <param name="strDirectory">要进行压缩的文件夹</param>
128 /// <param name="zipedFile">压缩后生成的压缩文件名</param>
129 public void ZipFileDirectory(string strDirectory, string zipedFile)
130 {
131 using (System.IO.FileStream ZipFile = System.IO.File.Create(zipedFile))
132 {
133 using (ZipOutputStream s = new ZipOutputStream(ZipFile))
134 {
135 ZipSetp(strDirectory, s, "");
136 }
137 }
138 }
139
140 /// <summary>
141 /// 递归遍历目录
142 /// </summary>
143 /// <param name="strDirectory">文件夹名称</param>
144 /// <param name="s">The ZipOutputStream Object.</param>
145 /// <param name="parentPath"></param>
146 private static void ZipSetp(string strDirectory, ZipOutputStream s, string parentPath)
147 {
148 if (strDirectory[strDirectory.Length - 1] != Path.DirectorySeparatorChar)
149 {
150 strDirectory += Path.DirectorySeparatorChar;
151 }
152 Crc32 crc = new Crc32();
153
154 string[] filenames = Directory.GetFileSystemEntries(strDirectory);
155
156 foreach (string file in filenames)// 遍历所有的文件和目录
157 {
158
159 if (Directory.Exists(file))// 先当作目录处理如果存在这个目录就递归Copy该目录下面的文件
160 {
161 string pPath = parentPath;
162 pPath += file.Substring(file.LastIndexOf("\\") + 1);
163 pPath += "\\";
164 ZipSetp(file, s, pPath);
165 }
166
167 else // 否则直接压缩文件
168 {
169 //打开压缩文件
170 using (FileStream fs = File.OpenRead(file))
171 {
172
173 byte[] buffer = new byte[fs.Length];
174 fs.Read(buffer, 0, buffer.Length);
175
176 string fileName = parentPath + file.Substring(file.LastIndexOf("\\") + 1);
177 ZipEntry entry = new ZipEntry(fileName);
178
179 entry.DateTime = DateTime.Now;
180 entry.Size = fs.Length;
181
182 fs.Close();
183
184 crc.Reset();
185 crc.Update(buffer);
186
187 entry.Crc = crc.Value;
188 s.PutNextEntry(entry);
189
190 s.Write(buffer, 0, buffer.Length);
191 }
192 }
193 }
194 }
195
196 /// <summary>
197 /// 解压缩一个 zip 文件。
198 /// </summary>
199 /// <param name="zipedFile">The ziped file.</param>
200 /// <param name="strDirectory">The STR directory.</param>
201 /// <param name="password">zip 文件的密码。</param>
202 /// <param name="overWrite">是否覆盖已存在的文件。</param>
203 public void UnZipFile(string zipedFile, string strDirectory, string password, bool overWrite)
204 {
205
206 if (strDirectory == "")
207 strDirectory = Directory.GetCurrentDirectory();
208 if (!strDirectory.EndsWith("\\"))
209 strDirectory = strDirectory + "\\";
210
211 using (ZipInputStream s = new ZipInputStream(File.OpenRead(zipedFile)))
212 {
213 s.Password = password;
214 ZipEntry theEntry;
215
216 while ((theEntry = s.GetNextEntry()) != null)
217 {
218 string directoryName = "";
219 string pathToZip = "";
220 pathToZip = theEntry.Name;
221
222 if (pathToZip != "")
223 directoryName = Path.GetDirectoryName(pathToZip) + "\\";
224
225 string fileName = Path.GetFileName(pathToZip);
226
227 Directory.CreateDirectory(strDirectory + directoryName);
228
229 if (fileName != "")
230 {
231 if ((File.Exists(strDirectory + directoryName + fileName) && overWrite) || (!File.Exists(strDirectory + directoryName + fileName)))
232 {
233 using (FileStream streamWriter = File.Create(strDirectory + directoryName + fileName))
234 {
235 int size = 2048;
236 byte[] data = new byte[2048];
237 while (true)
238 {
239 size = s.Read(data, 0, data.Length);
240
241 if (size > 0)
242 streamWriter.Write(data, 0, size);
243 else
244 break;
245 }
246 streamWriter.Close();
247 }
248 }
249 }
250 }
251
252 s.Close();
253 }
254 }
255
256 }
257 }
时间： 2024-10-13 03:04:27