Wiki source code of Setting up API communication by REST services with TerraIndex for customers
Version 4.1 by Robert Jan Daams on 2025/02/04 11:46
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1 | {{box cssClass="floatinginfobox" title="**Contents**"}} | ||
2 | {{toc/}} | ||
3 | {{/box}} | ||
4 | |||
5 | = Usefull code snippets = | ||
6 | |||
7 | == C# .NET == | ||
8 | |||
9 | == Zip Stream class == | ||
10 | |||
11 | {{info}} | ||
12 | This is a Zip Stream class you can use to extract a zipstream. | ||
13 | {{/info}} | ||
14 | |||
15 | {{code language="Csharp" layout="LINENUMBERS"}} | ||
16 | /// <summary> | ||
17 | /// Helper class for compress en decompress of file data | ||
18 | /// </summary> | ||
19 | public static class ZipStreamHelper { | ||
20 | #region Compress and encode | ||
21 | /// <summary> | ||
22 | /// Comprimeer een string en geeft deze terug in Base64 string. | ||
23 | /// </summary> | ||
24 | /// <param name="content">filecontent</param> | ||
25 | /// <returns>gecomprimeerde string</returns> | ||
26 | public static string CompressToBase64String(string content) { | ||
27 | //string to byte[] | ||
28 | byte[] contentArray = stringToByteArray(content); | ||
29 | // Compress | ||
30 | byte[] compressed = Compress(contentArray); | ||
31 | return base64_encode(compressed); | ||
32 | } | ||
33 | |||
34 | /// <summary> | ||
35 | /// Zet een string om naar een ByteArray | ||
36 | /// </summary> | ||
37 | /// <param name="content">filecontent</param> | ||
38 | /// <returns>ByteArray</returns> | ||
39 | public static byte[] stringToByteArray(string content) { | ||
40 | System.Text.UTF8Encoding encoding = new System.Text.UTF8Encoding(); | ||
41 | return encoding.GetBytes(content); | ||
42 | } | ||
43 | |||
44 | /// <summary> | ||
45 | /// comprimeer een ByteArray | ||
46 | /// </summary> | ||
47 | /// <param name="data">filedata als ByteArray</param> | ||
48 | /// <returns>gecomprimeerde ByteArray</returns> | ||
49 | public static byte[] Compress(byte[] data) { | ||
50 | using(var compressedStream = new MemoryStream()) | ||
51 | using(var zipStream = new GZipStream(compressedStream, CompressionMode.Compress)) { | ||
52 | zipStream.Write(data, 0, data.Length); | ||
53 | zipStream.Close(); | ||
54 | return compressedStream.ToArray(); | ||
55 | } | ||
56 | } | ||
57 | |||
58 | /// <summary> | ||
59 | /// Zet een ByteArray om naar een Base64 string | ||
60 | /// </summary> | ||
61 | /// <param name="data">gecomprimeerde ByteArray</param> | ||
62 | /// <returns>Base 64 string</returns> | ||
63 | public static string base64_encode(byte[] data) { | ||
64 | if (data == null) | ||
65 | return string.Empty; | ||
66 | return Convert.ToBase64String(data); | ||
67 | } | ||
68 | |||
69 | /// <summary> | ||
70 | /// Zet een string om naar een Base64 string | ||
71 | /// </summary> | ||
72 | /// <param name="data">string</param> | ||
73 | /// <returns>Base 64 string</returns> | ||
74 | public static string string_base64_encode(string data) { | ||
75 | if (string.IsNullOrEmpty(data)) | ||
76 | return string.Empty; | ||
77 | |||
78 | //string to byte[] | ||
79 | byte[] contentArray = stringToByteArray(data); | ||
80 | return base64_encode(contentArray); | ||
81 | } | ||
82 | #endregion | ||
83 | |||
84 | #region Decompress and decode | ||
85 | // Decode and decompress | ||
86 | /// <summary> | ||
87 | /// Decomprimeer een Base64 string naar een string | ||
88 | /// </summary> | ||
89 | /// <param name="contentBase64">GZIP Base64 string</param> | ||
90 | /// <returns>string</returns> | ||
91 | public static string DecompressBase64StringToString(string contentBase64) { | ||
92 | // Decompress | ||
93 | byte[] decoded = base64_decode(contentBase64); | ||
94 | byte[] decompressed = Decompress(decoded); | ||
95 | |||
96 | return byteArrayTostring(decompressed); | ||
97 | } | ||
98 | |||
99 | /// <summary> | ||
100 | /// Zet een ByteArray om in een normale string | ||
101 | /// </summary> | ||
102 | /// <param name="data">ByteArray</param> | ||
103 | /// <returns>string</returns> | ||
104 | public static string byteArrayTostring(byte[] data) { | ||
105 | System.Text.UTF8Encoding enc = new System.Text.UTF8Encoding(); | ||
106 | return enc.GetString(data); | ||
107 | } | ||
108 | |||
109 | /// <summary> | ||
110 | /// Zet een Base64 string om naar een ByteArray | ||
111 | /// </summary> | ||
112 | /// <param name="encodedData">Base64 string</param> | ||
113 | /// <returns>gecomprimeerde ByteArray</returns> | ||
114 | public static byte[] base64_decode(string encodedData) { | ||
115 | byte[] encodedDataAsBytes = Convert.FromBase64String(encodedData); | ||
116 | return encodedDataAsBytes; | ||
117 | } | ||
118 | |||
119 | /// <summary> | ||
120 | /// Zet een gecomprimeerde ByteArray om in een ByteArray | ||
121 | /// </summary> | ||
122 | /// <param name="data">gecomprimeerde ByteArray</param> | ||
123 | /// <returns>ByteArray (gedecomprimeerd)</returns> | ||
124 | public static byte[] Decompress(byte[] data) { | ||
125 | using(var compressedStream = new MemoryStream(data)) | ||
126 | using(var zipStream = new GZipStream(compressedStream, CompressionMode.Decompress)) | ||
127 | using(var resultStream = new MemoryStream()) { | ||
128 | var buffer = new byte[4096]; | ||
129 | int read; | ||
130 | |||
131 | while ((read = zipStream.Read(buffer, 0, buffer.Length)) > 0) { | ||
132 | resultStream.Write(buffer, 0, read); | ||
133 | } | ||
134 | |||
135 | return resultStream.ToArray(); | ||
136 | } | ||
137 | } | ||
138 | #endregion | ||
139 | } | ||
140 | {{/code}} |