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iminet 2022-05-02 20:13:35 +02:00
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.gitignore vendored Normal file
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**/desktop.ini

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STA.INIFile.cs Normal file
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// *******************************
// *** INIFile class V2.1 ***
// *******************************
// *** (C)2009-2013 S.T.A. snc ***
// *******************************
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Text;
namespace STA.Settings
{
internal class INIFile
{
#region "Declarations"
// *** Lock for thread-safe access to file and local cache ***
private object m_Lock = new object();
// *** File name ***
private string m_FileName = null;
internal string FileName
{
get
{
return m_FileName;
}
}
// *** Lazy loading flag ***
private bool m_Lazy = false;
// *** Automatic flushing flag ***
private bool m_AutoFlush = false;
// *** Local cache ***
private Dictionary<string, Dictionary<string, string>> m_Sections = new Dictionary<string, Dictionary<string, string>>();
private Dictionary<string, Dictionary<string, string>> m_Modified = new Dictionary<string, Dictionary<string, string>>();
// *** Local cache modified flag ***
private bool m_CacheModified = false;
#endregion
#region "Methods"
// *** Constructor ***
public INIFile(string FileName)
{
Initialize(FileName, false, false);
}
public INIFile(string FileName, bool Lazy, bool AutoFlush)
{
Initialize(FileName, Lazy, AutoFlush);
}
// *** Initialization ***
private void Initialize(string FileName, bool Lazy, bool AutoFlush)
{
m_FileName = FileName;
m_Lazy = Lazy;
m_AutoFlush = AutoFlush;
if (!m_Lazy) Refresh();
}
// *** Parse section name ***
private string ParseSectionName(string Line)
{
if (!Line.StartsWith("[")) return null;
if (!Line.EndsWith("]")) return null;
if (Line.Length < 3) return null;
return Line.Substring(1, Line.Length - 2);
}
// *** Parse key+value pair ***
private bool ParseKeyValuePair(string Line, ref string Key, ref string Value)
{
// *** Check for key+value pair ***
int i;
if ((i = Line.IndexOf('=')) <= 0) return false;
int j = Line.Length - i - 1;
Key = Line.Substring(0, i).Trim();
if (Key.Length <= 0) return false;
Value = (j > 0) ? (Line.Substring(i + 1, j).Trim()) : ("");
return true;
}
// *** Read file contents into local cache ***
internal void Refresh()
{
lock (m_Lock)
{
StreamReader sr = null;
try
{
// *** Clear local cache ***
m_Sections.Clear();
m_Modified.Clear();
// *** Open the INI file ***
try
{
sr = new StreamReader(m_FileName);
}
catch (FileNotFoundException)
{
return;
}
// *** Read up the file content ***
Dictionary<string, string> CurrentSection = null;
string s;
string SectionName;
string Key = null;
string Value = null;
while ((s = sr.ReadLine()) != null)
{
s = s.Trim();
// *** Check for section names ***
SectionName = ParseSectionName(s);
if (SectionName != null)
{
// *** Only first occurrence of a section is loaded ***
if (m_Sections.ContainsKey(SectionName))
{
CurrentSection = null;
}
else
{
CurrentSection = new Dictionary<string, string>();
m_Sections.Add(SectionName, CurrentSection);
}
}
else if (CurrentSection != null)
{
// *** Check for key+value pair ***
if (ParseKeyValuePair(s, ref Key, ref Value))
{
// *** Only first occurrence of a key is loaded ***
if (!CurrentSection.ContainsKey(Key))
{
CurrentSection.Add(Key, Value);
}
}
}
}
}
finally
{
// *** Cleanup: close file ***
if (sr != null) sr.Close();
sr = null;
}
}
}
// *** Flush local cache content ***
internal void Flush()
{
lock (m_Lock)
{
PerformFlush();
}
}
private void PerformFlush()
{
// *** If local cache was not modified, exit ***
if (!m_CacheModified) return;
m_CacheModified = false;
// *** Check if original file exists ***
bool OriginalFileExists = File.Exists(m_FileName);
// *** Get temporary file name ***
string TmpFileName = Path.ChangeExtension(m_FileName, "$n$");
// *** Copy content of original file to temporary file, replace modified values ***
StreamWriter sw = null;
// *** Create the temporary file ***
sw = new StreamWriter(TmpFileName);
try
{
Dictionary<string, string> CurrentSection = null;
if (OriginalFileExists)
{
StreamReader sr = null;
try
{
// *** Open the original file ***
sr = new StreamReader(m_FileName);
// *** Read the file original content, replace changes with local cache values ***
string s;
string SectionName;
string Key = null;
string Value = null;
bool Unmodified;
bool Reading = true;
while (Reading)
{
s = sr.ReadLine();
Reading = (s != null);
// *** Check for end of file ***
if (Reading)
{
Unmodified = true;
s = s.Trim();
SectionName = ParseSectionName(s);
}
else
{
Unmodified = false;
SectionName = null;
}
// *** Check for section names ***
if ((SectionName != null) || (!Reading))
{
if (CurrentSection != null)
{
// *** Write all remaining modified values before leaving a section ****
if (CurrentSection.Count > 0)
{
foreach (string fkey in CurrentSection.Keys)
{
if (CurrentSection.TryGetValue(fkey, out Value))
{
sw.Write(fkey);
sw.Write('=');
sw.WriteLine(Value);
}
}
sw.WriteLine();
CurrentSection.Clear();
}
}
if (Reading)
{
// *** Check if current section is in local modified cache ***
if (!m_Modified.TryGetValue(SectionName, out CurrentSection))
{
CurrentSection = null;
}
}
}
else if (CurrentSection != null)
{
// *** Check for key+value pair ***
if (ParseKeyValuePair(s, ref Key, ref Value))
{
if (CurrentSection.TryGetValue(Key, out Value))
{
// *** Write modified value to temporary file ***
Unmodified = false;
CurrentSection.Remove(Key);
sw.Write(Key);
sw.Write('=');
sw.WriteLine(Value);
}
}
}
// *** Write unmodified lines from the original file ***
if (Unmodified)
{
sw.WriteLine(s);
}
}
// *** Close the original file ***
sr.Close();
sr = null;
}
finally
{
// *** Cleanup: close files ***
if (sr != null) sr.Close();
sr = null;
}
}
// *** Cycle on all remaining modified values ***
foreach (KeyValuePair<string, Dictionary<string, string>> SectionPair in m_Modified)
{
CurrentSection = SectionPair.Value;
if (CurrentSection.Count > 0)
{
sw.WriteLine();
// *** Write the section name ***
sw.Write('[');
sw.Write(SectionPair.Key);
sw.WriteLine(']');
// *** Cycle on all key+value pairs in the section ***
foreach (KeyValuePair<string, string> ValuePair in CurrentSection)
{
// *** Write the key+value pair ***
sw.Write(ValuePair.Key);
sw.Write('=');
sw.WriteLine(ValuePair.Value);
}
CurrentSection.Clear();
}
}
m_Modified.Clear();
// *** Close the temporary file ***
sw.Close();
sw = null;
// *** Rename the temporary file ***
File.Copy(TmpFileName, m_FileName, true);
// *** Delete the temporary file ***
File.Delete(TmpFileName);
}
finally
{
// *** Cleanup: close files ***
if (sw != null) sw.Close();
sw = null;
}
}
// *** Read a value from local cache ***
internal string GetValue(string SectionName, string Key, string DefaultValue)
{
// *** Lazy loading ***
if (m_Lazy)
{
m_Lazy = false;
Refresh();
}
lock (m_Lock)
{
// *** Check if the section exists ***
Dictionary<string, string> Section;
if (!m_Sections.TryGetValue(SectionName, out Section)) return DefaultValue;
// *** Check if the key exists ***
string Value;
if (!Section.TryGetValue(Key, out Value)) return DefaultValue;
// *** Return the found value ***
return Value;
}
}
// *** Insert or modify a value in local cache ***
internal void SetValue(string SectionName, string Key, string Value)
{
// *** Lazy loading ***
if (m_Lazy)
{
m_Lazy = false;
Refresh();
}
lock (m_Lock)
{
// *** Flag local cache modification ***
m_CacheModified = true;
// *** Check if the section exists ***
Dictionary<string, string> Section;
if (!m_Sections.TryGetValue(SectionName, out Section))
{
// *** If it doesn't, add it ***
Section = new Dictionary<string, string>();
m_Sections.Add(SectionName,Section);
}
// *** Modify the value ***
if (Section.ContainsKey(Key)) Section.Remove(Key);
Section.Add(Key, Value);
// *** Add the modified value to local modified values cache ***
if (!m_Modified.TryGetValue(SectionName, out Section))
{
Section = new Dictionary<string, string>();
m_Modified.Add(SectionName, Section);
}
if (Section.ContainsKey(Key)) Section.Remove(Key);
Section.Add(Key, Value);
// *** Automatic flushing : immediately write any modification to the file ***
if (m_AutoFlush) PerformFlush();
}
}
// *** Encode byte array ***
private string EncodeByteArray(byte[] Value)
{
if (Value == null) return null;
StringBuilder sb = new StringBuilder();
foreach (byte b in Value)
{
string hex = Convert.ToString(b, 16);
int l = hex.Length;
if (l > 2)
{
sb.Append(hex.Substring(l - 2, 2));
}
else
{
if (l < 2) sb.Append("0");
sb.Append(hex);
}
}
return sb.ToString();
}
// *** Decode byte array ***
private byte[] DecodeByteArray(string Value)
{
if (Value == null) return null;
int l = Value.Length;
if (l < 2) return new byte[] { };
l /= 2;
byte[] Result = new byte[l];
for (int i = 0; i < l; i++) Result[i] = Convert.ToByte(Value.Substring(i * 2, 2), 16);
return Result;
}
// *** Getters for various types ***
internal bool GetValue(string SectionName, string Key, bool DefaultValue)
{
string StringValue = GetValue(SectionName, Key, DefaultValue.ToString(System.Globalization.CultureInfo.InvariantCulture));
int Value;
if (int.TryParse(StringValue, out Value)) return (Value != 0);
return DefaultValue;
}
internal int GetValue(string SectionName, string Key, int DefaultValue)
{
string StringValue = GetValue(SectionName, Key, DefaultValue.ToString(CultureInfo.InvariantCulture));
int Value;
if (int.TryParse(StringValue, NumberStyles.Any, CultureInfo.InvariantCulture, out Value)) return Value;
return DefaultValue;
}
internal long GetValue(string SectionName, string Key, long DefaultValue)
{
string StringValue = GetValue(SectionName, Key, DefaultValue.ToString(CultureInfo.InvariantCulture));
long Value;
if (long.TryParse(StringValue, NumberStyles.Any, CultureInfo.InvariantCulture, out Value)) return Value;
return DefaultValue;
}
internal double GetValue(string SectionName, string Key, double DefaultValue)
{
string StringValue = GetValue(SectionName, Key, DefaultValue.ToString(CultureInfo.InvariantCulture));
double Value;
if (double.TryParse(StringValue, NumberStyles.Any, CultureInfo.InvariantCulture, out Value)) return Value;
return DefaultValue;
}
internal byte[] GetValue(string SectionName, string Key, byte[] DefaultValue)
{
string StringValue = GetValue(SectionName, Key, EncodeByteArray(DefaultValue));
try
{
return DecodeByteArray(StringValue);
}
catch (FormatException)
{
return DefaultValue;
}
}
internal DateTime GetValue(string SectionName, string Key, DateTime DefaultValue)
{
string StringValue = GetValue(SectionName, Key, DefaultValue.ToString(CultureInfo.InvariantCulture));
DateTime Value;
if (DateTime.TryParse(StringValue, CultureInfo.InvariantCulture, DateTimeStyles.AllowWhiteSpaces | DateTimeStyles.NoCurrentDateDefault | DateTimeStyles.AssumeLocal, out Value)) return Value;
return DefaultValue;
}
// *** Setters for various types ***
internal void SetValue(string SectionName, string Key, bool Value)
{
SetValue(SectionName, Key, (Value) ? ("1") : ("0"));
}
internal void SetValue(string SectionName, string Key, int Value)
{
SetValue(SectionName, Key, Value.ToString(CultureInfo.InvariantCulture));
}
internal void SetValue(string SectionName, string Key, long Value)
{
SetValue(SectionName, Key, Value.ToString(CultureInfo.InvariantCulture));
}
internal void SetValue(string SectionName, string Key, double Value)
{
SetValue(SectionName, Key, Value.ToString(CultureInfo.InvariantCulture));
}
internal void SetValue(string SectionName, string Key, byte[] Value)
{
SetValue(SectionName, Key, EncodeByteArray(Value));
}
internal void SetValue(string SectionName, string Key, DateTime Value)
{
SetValue(SectionName, Key, Value.ToString(CultureInfo.InvariantCulture));
}
#endregion
}
}