127 lines
3.7 KiB
C#
127 lines
3.7 KiB
C#
using System;
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using System.Drawing;
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using System.IO;
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using RyzStudio.Data.SQLite;
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namespace bzit.bomg.Data
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{
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public class IconDatabase : SQLiteDatabase2
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{
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public IconDatabase()
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{
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this.requiredTableList = new string[] { "bzt_app_bomg_icons" };
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}
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protected override bool prepareDatabase()
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{
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if (this.DBConnection == null)
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{
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return false;
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}
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return this.DoNonQuery(@"
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CREATE TABLE bzt_app_bomg_icons
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(
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ico_id INTEGER PRIMARY KEY,
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ico_key TEXT,
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ico_hash TEXT,
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ico_content BLOB
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)
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") >= 0;
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}
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public bool HasIcon(string url)
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{
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return this.DoQueryExist("SELECT 1 FROM bzt_app_bomg_icons WHERE ico_key='" + escapeValue(url) + "'");
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}
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/* public bool AddIcon(string url, Image image)
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{
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if (string.IsNullOrWhiteSpace(url))
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{
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return false;
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}
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if (image == null)
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{
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return false;
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}
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if (this.HasIcon(url))
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{
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return this.DoNonQuery("UPDATE bzt_app_bomg_icons SET='" + imageToSQLString(image) + "' WHERE ico_key='" + SQLiteDatabase2.escapeValue(url) + "';") >= 0;
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}
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else
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{
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return this.DoNonQuery("INSERT INTO bzt_app_bomg_icons (ico_key, ico_content) VALUES ('" + SQLiteDatabase2.escapeValue(url) + "', '" + imageToSQLString(image) + "');") >= 0;
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}
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}*/
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public bool AddIcon(string url, byte[] image)
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{
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if (string.IsNullOrWhiteSpace(url))
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{
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return false;
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}
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if (image == null)
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{
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return false;
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}
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if (this.HasIcon(url))
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{
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return this.DoNonQuery("UPDATE bzt_app_bomg_icons SET='" + bytesToSQLString(image) + "' WHERE ico_key='" + escapeValue(url) + "';") >= 0;
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}
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else
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{
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return this.DoNonQuery("INSERT INTO bzt_app_bomg_icons (ico_key, ico_content) VALUES ('" + escapeValue(url) + "', '" + bytesToSQLString(image) + "');") >= 0;
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}
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}
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public Image GetIcon(string url)
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{
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if (!this.HasIcon(url))
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{
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return null;
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}
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string rs = this.DoQuerySingle("SELECT ico_content FROM bzt_app_bomg_icons WHERE ico_key='" + escapeValue(url) + "'");
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return sqlStringToImage(rs);
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}
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public void DeleteIcon(string url)
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{
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if (string.IsNullOrWhiteSpace(url))
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{
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return;
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}
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this.DoNonQuery("DELETE FROM bzt_app_bomg_icons WHERE ico_key='" + escapeValue(url) + "';");
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}
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protected string imageToSQLString(Image image)
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{
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MemoryStream stream = new MemoryStream();
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image.Save(stream, new System.Drawing.Imaging.ImageFormat(image.RawFormat.Guid));
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stream.Close();
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byte[] byteArray = stream.ToArray();
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return bytesToSQLString(byteArray);
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}
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protected string bytesToSQLString(byte[] image) => Convert.ToBase64String(image);
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protected Image sqlStringToImage(string base64_string)
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{
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byte[] byteArray2 = Convert.FromBase64String(base64_string);
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MemoryStream stream2 = new MemoryStream();
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stream2.Write(byteArray2, 0, byteArray2.Length);
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Image displayImage = Image.FromStream(stream2);
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return displayImage;
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}
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}
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} |