using Npgsql;
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using System;
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using System.Collections.Generic;
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using System.Configuration;
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using System.Data.Common;
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using System.IO;
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using System.Linq;
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using System.Reflection;
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using System.Runtime.InteropServices.ComTypes;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows;
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namespace DataLoader.Model
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{
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public class Tool
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{
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public static MainWindow Owner = null;
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public static readonly string BaseDir = AppDomain.CurrentDomain.BaseDirectory;
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public static int UserId = 0;
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public static string Uname = "";
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public static string Token = "";
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public static char[] HEX_DIGITS = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
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public static string FormatBytes(long bytes)
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{
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string[] Suffix = { "Byte", "KB", "MB", "GB", "TB" };
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int i = 0;
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double dblSByte = bytes;
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if (bytes > 1024)
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for (i = 0; (bytes / 1024) > 0; i++, bytes /= 1024)
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dblSByte = bytes / 1024.0;
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return String.Format("{0:0.##}{1}", dblSByte, Suffix[i]);
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}
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public static string GetSetting(string key)
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{
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if (!ConfigurationManager.AppSettings.AllKeys.Contains(key))
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{
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return null;
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}
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return ConfigurationManager.AppSettings[key];
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}
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public static List<DbParameter> GetParams<T>(string sql, T t)
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{
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List<DbParameter> list = new List<DbParameter>();
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Type tType = typeof(T);
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BindingFlags flags = BindingFlags.Public | BindingFlags.IgnoreCase | BindingFlags.Instance;
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int start = sql.IndexOf("@");
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while (start != -1)
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{
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int end = sql.IndexOf(",", start);
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if (end == -1) end = sql.IndexOf(")", start);
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if (end == -1) end = sql.IndexOf(" ", start);
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if (end == -1) end = sql.Length;
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string name = sql.Substring(start + 1, end - start - 1);
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PropertyInfo pi = tType.GetProperty(name, flags);
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if (pi != null)
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{
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object value = pi.GetValue(t, null);
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DbParameter dp = new NpgsqlParameter("@" + name, value);
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list.Add(dp);
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}
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start = sql.IndexOf("@", end);
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}
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return list;
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}
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/*//2a0befb05146cd30213ee4b95038aca0
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public static String getFileMd5(String filePath)
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{
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FileStream fis = null;
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try
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{
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MessageDigest md = MessageDigest.getInstance("MD5");
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fis = new FileStream(new File(filePath));
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FileChannel fChannel = fis.getChannel();
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Byte[] buffer =new Byte[1024 * 1024];
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while (fChannel.read(buffer) != -1)
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{
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buffer.flip();
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md.update(buffer);
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buffer.compact();
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}
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byte[] b = md.digest();
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return byteToHexString(b);
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}
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catch (Exception ex)
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{
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return null;
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}
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finally
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{
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try
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{
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if (null != fis)
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{
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fis.Dispose();
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}
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}
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catch (Exception ex)
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{
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//
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}
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}
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}
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public static String byteToHexString(byte[] tmp)
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{
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// 每个字节用 16 进制表示的话，使用两个字符，
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char[] str = new char[16 * 2];
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int k = 0;
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for (int i = 0; i < 16; i++)
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{
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// 转换成 16 进制字符的转换
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byte byte0 = tmp[i];
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// 取字节中高 4 位的数字转换
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str[k++] = HEX_DIGITS[byte0 >> 4 & 0xf];
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// >>> 为逻辑右移，将符号位一起右移， 取字节中低 4 位的数字转换
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str[k++] = HEX_DIGITS[byte0 & 0xf];
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}
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return new String(str);
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}*/
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}
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}
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