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Utils.cs
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Utils.cs
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/*==========================================================================;
*
* This file is part of LATINO. See http://www.latinolib.org
*
* File: Utils.cs
* Desc: Fundamental LATINO utilities
* Created: Nov-2007
*
* Author: Miha Grcar
*
* License: MIT (http://opensource.org/licenses/MIT)
*
***************************************************************************/
using System;
using System.IO;
using System.Diagnostics;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Security.Cryptography;
using System.Xml;
using System.Text;
using System.Text.RegularExpressions;
using System.Configuration;
using System.Globalization;
using System.Reflection;
using System.Data;
using System.Data.SqlClient;
using System.Threading;
namespace Latino
{
/* .-----------------------------------------------------------------------
|
| Class Utils
|
'-----------------------------------------------------------------------
*/
public static class Utils
{
/* .-----------------------------------------------------------------------
|
| Enum CaseType
|
'-----------------------------------------------------------------------
*/
public enum CaseType
{
abc,
ABC,
Abc,
AbC,
aBc,
Other
}
public const string DATE_TIME_SIMPLE
= "yyyy-MM-dd HH:mm:ss K"; // simple date-time format (incl. time zone, if available)
#region mTimeZones
private static KeyDat<string, string>[] mTimeZones = new KeyDat<string, string>[] {
new KeyDat<string, string>("ACDT", "+10:30"),
new KeyDat<string, string>("ACST", "+09:30"),
new KeyDat<string, string>("ACT", "+08:00"),
new KeyDat<string, string>("ADT", "-03:00"),
new KeyDat<string, string>("AEDT", "+11:00"),
new KeyDat<string, string>("AEST", "+10:00"),
new KeyDat<string, string>("AFT", "+04:30"),
new KeyDat<string, string>("AKDT", "-08:00"),
new KeyDat<string, string>("AKST", "-09:00"),
new KeyDat<string, string>("AMST", "+05:00"),
new KeyDat<string, string>("AMT", "+04:00"),
new KeyDat<string, string>("ART", "-03:00"),
new KeyDat<string, string>("AST", "+03:00"),
new KeyDat<string, string>("AST", "+04:00"),
new KeyDat<string, string>("AST", "+03:00"),
new KeyDat<string, string>("AST", "-04:00"),
new KeyDat<string, string>("AWDT", "+09:00"),
new KeyDat<string, string>("AWST", "+08:00"),
new KeyDat<string, string>("AZOST", "-01:00"),
new KeyDat<string, string>("AZT", "+04:00"),
new KeyDat<string, string>("BDT", "+08:00"),
new KeyDat<string, string>("BIOT", "+06:00"),
new KeyDat<string, string>("BIT", "-12:00"),
new KeyDat<string, string>("BOT", "-04:00"),
new KeyDat<string, string>("BRT", "-03:00"),
new KeyDat<string, string>("BST", "+06:00"),
new KeyDat<string, string>("BST", "+01:00"),
new KeyDat<string, string>("BTT", "+06:00"),
new KeyDat<string, string>("CAT", "+02:00"),
new KeyDat<string, string>("CCT", "+06:30"),
new KeyDat<string, string>("CDT", "-05:00"),
new KeyDat<string, string>("CEDT", "+02:00"),
new KeyDat<string, string>("CEST", "+02:00"),
new KeyDat<string, string>("CET", "+01:00"),
new KeyDat<string, string>("CHAST", "+12:45"),
new KeyDat<string, string>("CIST", "-08:00"),
new KeyDat<string, string>("CKT", "-10:00"),
new KeyDat<string, string>("CLST", "-03:00"),
new KeyDat<string, string>("CLT", "-04:00"),
new KeyDat<string, string>("COST", "-04:00"),
new KeyDat<string, string>("COT", "-05:00"),
new KeyDat<string, string>("CST", "-06:00"),
new KeyDat<string, string>("CST", "+08:00"),
new KeyDat<string, string>("CVT", "-01:00"),
new KeyDat<string, string>("CXT", "+07:00"),
new KeyDat<string, string>("ChST", "+10:00"),
new KeyDat<string, string>("DFT", "+01:00"),
new KeyDat<string, string>("EAST", "-06:00"),
new KeyDat<string, string>("EAT", "+03:00"),
new KeyDat<string, string>("ECT", "-04:00"),
new KeyDat<string, string>("ECT", "-05:00"),
new KeyDat<string, string>("EDT", "-04:00"),
new KeyDat<string, string>("EEDT", "+03:00"),
new KeyDat<string, string>("EEST", "+03:00"),
new KeyDat<string, string>("EET", "+02:00"),
new KeyDat<string, string>("EST", "-05:00"),
new KeyDat<string, string>("FJT", "+12:00"),
new KeyDat<string, string>("FKST", "-03:00"),
new KeyDat<string, string>("FKT", "-04:00"),
new KeyDat<string, string>("GALT", "-06:00"),
new KeyDat<string, string>("GET", "+04:00"),
new KeyDat<string, string>("GFT", "-03:00"),
new KeyDat<string, string>("GILT", "+12:00"),
new KeyDat<string, string>("GIT", "-09:00"),
new KeyDat<string, string>("GMT", "+00:00"),
new KeyDat<string, string>("GST", "-02:00"),
new KeyDat<string, string>("GYT", "-04:00"),
new KeyDat<string, string>("HADT", "-09:00"),
new KeyDat<string, string>("HAST", "-10:00"),
new KeyDat<string, string>("HKT", "+08:00"),
new KeyDat<string, string>("HMT", "+05:00"),
new KeyDat<string, string>("HST", "-10:00"),
new KeyDat<string, string>("IRKT", "+08:00"),
new KeyDat<string, string>("IRST", "+03:30"),
new KeyDat<string, string>("IST", "+05:30"),
new KeyDat<string, string>("IST", "+01:00"),
new KeyDat<string, string>("IST", "+02:00"),
new KeyDat<string, string>("JST", "+09:00"),
new KeyDat<string, string>("KRAT", "+07:00"),
new KeyDat<string, string>("KST", "+09:00"),
new KeyDat<string, string>("LHST", "+10:30"),
new KeyDat<string, string>("LINT", "+14:00"),
new KeyDat<string, string>("MAGT", "+11:00"),
new KeyDat<string, string>("MDT", "-06:00"),
new KeyDat<string, string>("MIT", "-09:30"),
new KeyDat<string, string>("MSD", "+04:00"),
new KeyDat<string, string>("MSK", "+03:00"),
new KeyDat<string, string>("MST", "+08:00"),
new KeyDat<string, string>("MST", "-07:00"),
new KeyDat<string, string>("MST", "+06:30"),
new KeyDat<string, string>("MUT", "+04:00"),
new KeyDat<string, string>("NDT", "-02:30"),
new KeyDat<string, string>("NFT", "+11:30"),
new KeyDat<string, string>("NPT", "+05:45"),
new KeyDat<string, string>("NST", "-03:30"),
new KeyDat<string, string>("NT", "-03:30"),
new KeyDat<string, string>("OMST", "+06:00"),
new KeyDat<string, string>("PDT", "-07:00"),
new KeyDat<string, string>("PETT", "+12:00"),
new KeyDat<string, string>("PHOT", "+13:00"),
new KeyDat<string, string>("PKT", "+05:00"),
new KeyDat<string, string>("PST", "-08:00"),
new KeyDat<string, string>("PST", "+08:00"),
new KeyDat<string, string>("RET", "+04:00"),
new KeyDat<string, string>("SAMT", "+04:00"),
new KeyDat<string, string>("SAST", "+02:00"),
new KeyDat<string, string>("SBT", "+11:00"),
new KeyDat<string, string>("SCT", "+04:00"),
new KeyDat<string, string>("SLT", "+05:30"),
new KeyDat<string, string>("SST", "-11:00"),
new KeyDat<string, string>("SST", "+08:00"),
new KeyDat<string, string>("TAHT", "-10:00"),
new KeyDat<string, string>("THA", "+07:00"),
new KeyDat<string, string>("UTC", "+00:00"),
new KeyDat<string, string>("UYST", "-02:00"),
new KeyDat<string, string>("UYT", "-03:00"),
new KeyDat<string, string>("VET", "-04:30"),
new KeyDat<string, string>("VLAT", "+10:00"),
new KeyDat<string, string>("WAT", "+01:00"),
new KeyDat<string, string>("WEDT", "+01:00"),
new KeyDat<string, string>("WEST", "+01:00"),
new KeyDat<string, string>("WET", "+00:00"),
new KeyDat<string, string>("YAKT", "+09:00"),
new KeyDat<string, string>("YEKT", "+05:00") };
#endregion
// *** Core utilities ***
[Conditional("THROW_EXCEPTIONS")]
public static void ThrowException(Exception exception)
{
if (exception != null) { throw exception; }
}
public static object Clone(object obj, bool deepClone)
{
if (deepClone && obj is IDeeplyCloneable)
{
return ((IDeeplyCloneable)obj).DeepClone();
}
else if (obj is ICloneable)
{
return ((ICloneable)obj).Clone();
}
else
{
return obj;
}
}
public static bool ObjectEquals(object obj1, object obj2, bool deepCmp)
{
if (obj1 == null && obj2 == null) { return true; }
else if (obj1 == null || obj2 == null) { return false; }
else if (!obj1.GetType().Equals(obj2.GetType())) { return false; }
else if (deepCmp && obj1 is IContentEquatable)
{
return ((IContentEquatable)obj1).ContentEquals(obj2);
}
else
{
return obj1.Equals(obj2);
}
}
public static int GetHashCode(object obj)
{
ThrowException(obj == null ? new ArgumentNullException("obj") : null);
if (obj is ISerializable)
{
BinarySerializer memSer = new BinarySerializer();
((ISerializable)obj).Save(memSer); // throws serialization-related exceptions
byte[] buffer = ((MemoryStream)memSer.Stream).GetBuffer();
MD5CryptoServiceProvider hashAlgo = new MD5CryptoServiceProvider();
Guid md5Hash = new Guid(hashAlgo.ComputeHash(buffer, 0, (int)memSer.Stream.Position));
return md5Hash.GetHashCode();
}
else
{
return obj.GetHashCode();
}
}
public static object ChangeType(object obj, Type newType, IFormatProvider fmtProvider)
{
ThrowException(newType == null ? new ArgumentNullException("newType") : null);
if (newType.IsAssignableFrom(obj.GetType()))
{
return obj;
}
else
{
return Convert.ChangeType(obj, newType, fmtProvider); // throws InvalidCastException, FormatException, OverflowException
}
}
// *** String utilities ***
public static Guid GetHashCode128(this string str)
{
ThrowException(str == null ? new ArgumentNullException("str") : null);
MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
return new Guid(md5.ComputeHash(Encoding.UTF8.GetBytes(str)));
}
public static ulong GetHashCode64(this string str)
{
ThrowException(str == null ? new ArgumentNullException("str") : null);
byte[] hashCode128 = new MD5CryptoServiceProvider().ComputeHash(Encoding.UTF8.GetBytes(str));
ulong part1 = (ulong)BitConverter.ToInt64(hashCode128, 0);
ulong part2 = (ulong)BitConverter.ToInt64(hashCode128, 8);
return part1 ^ part2;
}
public static string Truncate(this string str, int len)
{
ThrowException(len < 0 ? new ArgumentOutOfRangeException("len") : null);
return (str != null && str.Length > len) ? str.Substring(0, len) : str;
}
public static string ToOneLine(this string str)
{
return ToOneLine(str, /*compact=*/false);
}
public static string ToOneLine(this string str, bool compact)
{
if (str == null) { return null; }
str = str.Replace("\r", "").Replace('\n', ' ').Trim();
if (compact)
{
str = Regex.Replace(str, @"\s+", " ");
}
return str;
}
public static CaseType GetCaseType(this string str)
{
ThrowException(str == null ? new ArgumentNullException("str") : null);
str = str.Trim();
int numUpper = 0;
int numLower = 0;
int numOther = 0;
foreach (char ch in str)
{
if (char.IsUpper(ch)) { numUpper++; }
else if (char.IsLower(ch)) { numLower++; }
else { numOther++; }
}
int numLetter = numUpper + numLower;
if (numLetter == 0) { return CaseType.Other; }
if (numLetter == 1)
{
if (char.IsUpper(str[0])) { return CaseType.ABC; }
else if (char.IsLower(str[0])) { return CaseType.abc; }
else { return CaseType.Other; }
}
if (char.IsUpper(str[0])) // ABC, Abc, AbC
{
if (numUpper + numOther == str.Length) { return CaseType.ABC; }
else if (numUpper == 1) { return CaseType.Abc; }
else { return CaseType.AbC; }
}
else // abc, aBc
{
if (numLower + numOther == str.Length) { return CaseType.abc; }
else { return CaseType.aBc; }
}
}
// *** IO utilities ***
public static bool VerifyFileNameCreate(string fileName)
{
try
{
FileInfo fileInfo = new FileInfo(fileName);
FileAttributes attributes = fileInfo.Attributes;
if ((int)attributes == -1) { attributes = (FileAttributes)0; }
return (attributes & FileAttributes.Directory) != FileAttributes.Directory && (attributes & FileAttributes.Offline) != FileAttributes.Offline &&
(attributes & FileAttributes.ReadOnly) != FileAttributes.ReadOnly /*&& (attributes & FileAttributes.System) != FileAttributes.System*/;
}
catch
{
return false;
}
}
public static bool VerifyFileNameOpen(string fileName)
{
try
{
FileInfo fileInfo = new FileInfo(fileName);
FileAttributes attributes = fileInfo.Attributes;
if ((int)attributes == -1) { return false; }
return (attributes & FileAttributes.Directory) != FileAttributes.Directory && (attributes & FileAttributes.Offline) != FileAttributes.Offline;
}
catch
{
return false;
}
}
public static bool VerifyFolderName(string folderName, bool mustExist)
{
try
{
DirectoryInfo dirInfo = new DirectoryInfo(folderName);
return mustExist ? dirInfo.Exists : !VerifyFileNameOpen(folderName);
}
catch
{
return false;
}
}
public static byte[] ReadAllBytes(this Stream stream, int sizeLimit)
{
ThrowException(stream == null ? new ArgumentNullException("stream") : null);
byte[] buffer = new byte[32768];
int size = 0;
using (MemoryStream memStream = new MemoryStream())
{
while (true)
{
int read = stream.Read(buffer, 0, buffer.Length); // throws IOException, ObjectDisposedException, NotSupportedException
if (read <= 0)
{
return memStream.ToArray();
}
else if (sizeLimit > 0)
{
size += read;
if (size > sizeLimit) { return null; }
}
memStream.Write(buffer, 0, read);
}
}
}
public static Encoding GetUnicodeSignature(string fileName)
{
ThrowException(!VerifyFileNameOpen(fileName) ? new ArgumentValueException("fileName") : null);
FileStream file = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read);
byte[] bom = new byte[4]; // get the byte-order mark, if there is one
file.Read(bom, 0, 4);
file.Close();
if (bom[0] == 0xef && bom[1] == 0xbb && bom[2] == 0xbf) { return Encoding.UTF8; }
else if (bom[0] == 0xff && bom[1] == 0xfe) { return Encoding.Unicode; }
else if (bom[0] == 0xfe && bom[1] == 0xff) { return Encoding.BigEndianUnicode; }
else if (bom[0] == 0xff && bom[1] == 0xfe && bom[2] == 0 && bom[3] == 0) { return Encoding.UTF32; }
else if (bom[0] == 0 && bom[1] == 0 && bom[2] == 0xfe && bom[3] == 0xff) { return Encoding.GetEncoding("UTF-32BE"); }
else { return null; }
}
public static string GetManifestResourceString(Type type, string resName)
{
ThrowException(type == null ? new ArgumentNullException("type") : null);
ThrowException(resName == null ? new ArgumentNullException("resName") : null);
foreach (string res in type.Assembly.GetManifestResourceNames())
{
if (res.EndsWith(resName))
{
return new StreamReader(type.Assembly.GetManifestResourceStream(res)).ReadToEnd();
}
}
return null;
}
public static Stream GetManifestResourceStream(Type type, string resName)
{
ThrowException(type == null ? new ArgumentNullException("type") : null);
ThrowException(resName == null ? new ArgumentNullException("resName") : null);
foreach (string res in type.Assembly.GetManifestResourceNames())
{
if (res.EndsWith(resName))
{
return type.Assembly.GetManifestResourceStream(res);
}
}
return null;
}
public static string GetConfigValue(string key)
{
return GetConfigValue(key, /*defaultValue=*/null); // throws ArgumentNullException, ConfigurationErrorsException
}
public static string GetConfigValue(string key, string defaultValue)
{
ThrowException(key == null ? new ArgumentNullException("key") : null);
string value = ConfigurationManager.AppSettings[key]; // throws ConfigurationErrorsException
if (value == null) { value = defaultValue; }
return value;
}
public static T GetConfigValue<T>(string key, string defaultValue)
{
string val = GetConfigValue(key, defaultValue); // throws ArgumentNullException, ConfigurationErrorsException
// the following statements throw ArgumentNullException, FormatException, OverflowException, InvalidCastException
if (typeof(T) == typeof(int)) { return (T)(object)Convert.ToInt32(val); }
else if (typeof(T) == typeof(int?)) { return val != null ? (T)(object)Convert.ToInt32(val) : default(T); }
else if (typeof(T) == typeof(long)) { return (T)(object)Convert.ToInt64(val); }
else if (typeof(T) == typeof(long?)) { return val != null ? (T)(object)Convert.ToInt64(val) : default(T); }
else if (typeof(T) == typeof(float)) { return (T)(object)Convert.ToSingle(val); }
else if (typeof(T) == typeof(float?)) { return val != null ? (T)(object)Convert.ToSingle(val) : default(T); }
else if (typeof(T) == typeof(double)) { return (T)(object)Convert.ToDouble(val); }
else if (typeof(T) == typeof(double?)) { return val != null ? (T)(object)Convert.ToDouble(val) : default(T); }
else if (typeof(T) == typeof(bool)) { return (T)(object)(val != null && new ArrayList<string>(new string[] { "yes", "on", "true", "y", "1" }).Contains(val.ToLower())); }
else if (typeof(T) == typeof(bool?)) { return val != null ? (T)(object)(val != null && new ArrayList<string>(new string[] { "yes", "on", "true", "y", "1" }).Contains(val.ToLower())) : default(T); }
else if (typeof(T) == typeof(TimeSpan)) { return (T)(object)TimeSpan.Parse(val); }
else if (typeof(T) == typeof(TimeSpan?)) { return val != null ? (T)(object)TimeSpan.Parse(val) : default(T); }
else if (typeof(T) == typeof(DateTime)) { return (T)(object)DateTime.Parse(val); }
else if (typeof(T) == typeof(DateTime?)) { return val != null ? (T)(object)DateTime.Parse(val) : default(T); }
else if (typeof(T).IsEnum) { return (T)Enum.Parse(typeof(T), val, /*ignoreCase=*/true); }
else return (T)(object)val;
}
public static T GetConfigValue<T>(string key)
{
return GetConfigValue<T>(key, /*defaultValue=*/null); // throws ArgumentNullException, ConfigurationErrorsException, type conversion exceptions
}
// *** Dictionary utilities ***
public static void SaveDictionary<KeyT, ValT>(this Dictionary<KeyT, ValT> dict, BinarySerializer writer)
{
ThrowException(dict == null ? new ArgumentNullException("dict") : null);
ThrowException(writer == null ? new ArgumentNullException("writer") : null);
// the following statements throw serialization-related exceptions
writer.WriteInt(dict.Count);
foreach (KeyValuePair<KeyT, ValT> item in dict)
{
writer.WriteValueOrObject<KeyT>(item.Key);
writer.WriteValueOrObject<ValT>(item.Value);
}
}
public static Dictionary<KeyT, ValT> LoadDictionary<KeyT, ValT>(this BinarySerializer reader)
{
return LoadDictionary<KeyT, ValT>(reader, /*comparer=*/null); // throws ArgumentNullException, serialization-related exceptions
}
public static Dictionary<KeyT, ValT> LoadDictionary<KeyT, ValT>(this BinarySerializer reader, IEqualityComparer<KeyT> comparer)
{
ThrowException(reader == null ? new ArgumentNullException("reader") : null);
Dictionary<KeyT, ValT> dict = new Dictionary<KeyT, ValT>(comparer);
// the following statements throw serialization-related exceptions
int count = reader.ReadInt();
for (int i = 0; i < count; i++)
{
KeyT key = reader.ReadValueOrObject<KeyT>();
ValT dat = reader.ReadValueOrObject<ValT>();
dict.Add(key, dat);
}
return dict;
}
// *** XML utilities ***
public static string ReplaceSurrogates(this string text)
{
return ReplaceSurrogates(text, '\uFFFD');
}
public static string ReplaceSurrogates(this string text, char replacement)
{
if (text == null) { return null; }
char[] buffer = new char[text.Length];
int i = 0;
foreach (char ch in text)
{
if (char.IsSurrogate(ch)) { buffer[i] = replacement; }
else { buffer[i] = ch; }
i++;
}
return new string(buffer);
}
public static string XmlReadValue(this XmlReader reader, string attrName)
{
ThrowException(reader == null ? new ArgumentNullException("reader") : null);
ThrowException(attrName == null ? new ArgumentNullException("attrName") : null);
if (reader.IsEmptyElement) { return ""; }
string text = "";
while (reader.Read() && reader.NodeType != XmlNodeType.Text && reader.NodeType != XmlNodeType.CDATA && !(reader.NodeType == XmlNodeType.EndElement && reader.Name == attrName)) { }
if (reader.NodeType == XmlNodeType.Text || reader.NodeType == XmlNodeType.CDATA)
{
text = reader.Value;
XmlSkip(reader, attrName);
}
return text;
}
public static void XmlSkip(this XmlReader reader, string attrName)
{
ThrowException(reader == null ? new ArgumentNullException("reader") : null);
ThrowException(attrName == null ? new ArgumentNullException("attrName") : null);
if (reader.IsEmptyElement) { return; }
while (reader.Read() && !(reader.NodeType == XmlNodeType.EndElement && reader.Name == attrName)) { }
}
// *** DB utilities ***
public static object RetryOnDeadlock(Func<object> action, int numRetries, int sleep, Logger logger)
{
Utils.ThrowException(action == null ? new ArgumentNullException("action") : null);
Utils.ThrowException(sleep < 0 ? new ArgumentOutOfRangeException("sleep") : null);
Utils.ThrowException(numRetries < 0 ? new ArgumentOutOfRangeException("numRetries") : null);
for (int i = 0; (numRetries == 0) ? true : (i <= numRetries); i += (numRetries > 0) ? 1 : 0)
{
try
{
return action();
}
catch (SqlException e)
{
Console.Write("X");
if (!e.Message.Contains("deadlock") || (i == numRetries && i != 0)) { throw e; }
if (logger != null) { logger.Warn("RetryOnDeadlock", e); }
}
Thread.Sleep(sleep);
}
return null; // unreachable code
}
public static object RetryOnDeadlock(Func<object> action, Logger logger)
{
return RetryOnDeadlock(action, /*numRetries=*/0, /*sleep=*/0, logger); // throws ArgumentNullException, ArgumentOutOfRangeException
}
public static object RetryOnDeadlock(Func<object> action)
{
return RetryOnDeadlock(action, /*numRetries=*/0, /*sleep=*/0, /*logger=*/null); // throws ArgumentNullException, ArgumentOutOfRangeException
}
public static int ExecuteNonQueryRetryOnDeadlock(this SqlCommand sqlCmd, int numRetries, int sleep, Logger logger)
{
Utils.ThrowException(sqlCmd == null ? new ArgumentNullException("sqlCmd") : null);
return (int)RetryOnDeadlock(delegate() { return sqlCmd.ExecuteNonQuery(); }, numRetries, sleep, logger); // throws ArgumentOutOfRangeException, SqlException
}
public static int ExecuteNonQueryRetryOnDeadlock(this SqlCommand sqlCmd, Logger logger)
{
return ExecuteNonQueryRetryOnDeadlock(sqlCmd, /*numRetries=*/0, /*sleep=*/0, logger); // throws ArgumentNullException, ArgumentOutOfRangeException, SqlException
}
public static int ExecuteNonQueryRetryOnDeadlock(this SqlCommand sqlCmd)
{
return ExecuteNonQueryRetryOnDeadlock(sqlCmd, /*numRetries=*/0, /*sleep=*/0, /*logger=*/null); // throws ArgumentNullException, ArgumentOutOfRangeException, SqlException
}
public static object ExecuteScalarRetryOnDeadlock(this SqlCommand sqlCmd, int numRetries, int sleep, Logger logger)
{
Utils.ThrowException(sqlCmd == null ? new ArgumentNullException("sqlCmd") : null);
return RetryOnDeadlock(delegate() { return sqlCmd.ExecuteScalar(); }, numRetries, sleep, logger); // throws ArgumentOutOfRangeException, SqlException
}
public static object ExecuteScalarRetryOnDeadlock(this SqlCommand sqlCmd, Logger logger)
{
return ExecuteScalarRetryOnDeadlock(sqlCmd, /*numRetries=*/0, /*sleep=*/0, logger); // throws ArgumentNullException, ArgumentOutOfRangeException, SqlException
}
public static object ExecuteScalarRetryOnDeadlock(this SqlCommand sqlCmd)
{
return ExecuteScalarRetryOnDeadlock(sqlCmd, /*numRetries=*/0, /*sleep=*/0, /*logger=*/null); // throws ArgumentNullException, ArgumentOutOfRangeException, SqlException
}
public static void WriteToServerRetryOnDeadlock(this SqlBulkCopy bulkCopy, DataTable table, int numRetries, int sleep, Logger logger)
{
Utils.ThrowException(bulkCopy == null ? new ArgumentNullException("bulkCopy") : null);
Utils.ThrowException(table == null ? new ArgumentNullException("table") : null);
RetryOnDeadlock(delegate() { bulkCopy.WriteToServer(table); return null; }, numRetries, sleep, logger); // throws ArgumentOutOfRangeException, SqlException
}
public static void WriteToServerRetryOnDeadlock(this SqlBulkCopy bulkCopy, DataTable table, Logger logger)
{
WriteToServerRetryOnDeadlock(bulkCopy, table, /*numRetries=*/0, /*sleep=*/0, logger); // throws ArgumentNullException, ArgumentOutOfRangeException, SqlException
}
public static void WriteToServerRetryOnDeadlock(this SqlBulkCopy bulkCopy, DataTable table)
{
WriteToServerRetryOnDeadlock(bulkCopy, table, /*numRetries=*/0, /*sleep=*/0, /*logger=*/null); // throws ArgumentNullException, ArgumentOutOfRangeException, SqlException
}
public static T GetValue<T>(this SqlDataReader reader, string colName)
{
Utils.ThrowException(reader == null ? new ArgumentNullException("reader") : null);
object obj = reader.GetValue(reader.GetOrdinal(colName)); // throws IndexOutOfRangeException
if (obj is DBNull) { return default(T); }
return (T)obj; // throws InvalidCastException
}
public static bool HasValue(this SqlDataReader reader, string colName)
{
Utils.ThrowException(reader == null ? new ArgumentNullException("reader") : null);
object obj = reader.GetValue(reader.GetOrdinal(colName)); // throws IndexOutOfRangeException
return !(obj is DBNull);
}
public static void AssignParams(this SqlCommand command, params object[] args)
{
Utils.ThrowException(command == null ? new ArgumentNullException("command") : null);
Utils.ThrowException(args == null ? new ArgumentNullException("command") : null);
for (int i = 0; i < args.Length; i += 2)
{
Utils.ThrowException(!(args[i] is string) ? new ArgumentValueException("args") : null);
object val = args[i + 1];
SqlParameter param = new SqlParameter((string)args[i], val == null ? DBNull.Value : val);
command.Parameters.Add(param);
}
}
// *** Other utilities ***
public static bool IsFiniteNumber(this double val)
{
return !double.IsInfinity(val) && !double.IsNaN(val);
}
public static bool IsFiniteNumber(this float val)
{
return !float.IsInfinity(val) && !float.IsNaN(val);
}
public static string NormalizeDateTimeStr(string dateTimeStr) // *** rmv
{
ThrowException(dateTimeStr == null ? new ArgumentNullException("dateTimeStr") : null);
dateTimeStr = dateTimeStr.Trim();
foreach (KeyDat<string, string> timeZone in mTimeZones)
{
if (dateTimeStr.EndsWith(" " + timeZone.Key)) { dateTimeStr = dateTimeStr.Replace(timeZone.Key, timeZone.Dat); break; }
}
DateTime dt;
try
{
dt = DateTime.Parse(dateTimeStr);
}
catch
{
return null;
}
return dt.ToString(DATE_TIME_SIMPLE);
}
public static void SetDefaultCulture(CultureInfo culture)
{
ThrowException(culture == null ? new ArgumentNullException("culture") : null);
Type type = typeof(CultureInfo);
try
{
type.InvokeMember("s_userDefaultCulture",
BindingFlags.SetField | BindingFlags.NonPublic | BindingFlags.Static,
null,
culture,
new object[] { culture });
type.InvokeMember("s_userDefaultUICulture",
BindingFlags.SetField | BindingFlags.NonPublic | BindingFlags.Static,
null,
culture,
new object[] { culture });
}
catch { }
try
{
type.InvokeMember("m_userDefaultCulture",
BindingFlags.SetField | BindingFlags.NonPublic | BindingFlags.Static,
null,
culture,
new object[] { culture });
type.InvokeMember("m_userDefaultUICulture",
BindingFlags.SetField | BindingFlags.NonPublic | BindingFlags.Static,
null,
culture,
new object[] { culture });
}
catch { }
}
public static Dictionary<string, object> GetPropertyValues(object o, params string[] exclude)
{
Preconditions.CheckNotNull(o);
return o.GetType().GetProperties()
.Where(p => p.GetGetMethod() != null && (exclude == null || !exclude.Contains(p.Name)))
.ToDictionary(property => property.Name, property => property.GetValue(o, null));
}
// *** Reflection ***
public static object CreateInstance(Type type)
{
var constructors = type.GetConstructors();
var defaultConstructor = constructors.SingleOrDefault(c => !c.GetParameters().Any());
if (defaultConstructor == null)
{
var pseudoDefaultConstructor = constructors.FirstOrDefault(
ci => ci.GetParameters().All(p => p.GetCustomAttributes(typeof(OptionalAttribute), false).Any()));
if (pseudoDefaultConstructor == null)
{
throw new InvalidOperationException("No default constructor found");
}
return pseudoDefaultConstructor
.Invoke(pseudoDefaultConstructor.GetParameters().Select(p => p.DefaultValue).ToArray());
}
return Activator.CreateInstance(type);
}
// *** Delegates ***
public delegate T UnaryOperatorDelegate<T>(T val);
public delegate T BinaryOperatorDelegate<T>(T a, T b);
}
}