/// <summary>
/// Deletes a value from a standard format .ini file.
/// </summary>
/// <param name="file">The name of the file.</param>
/// <param name="section">The section name.</param>
/// <param name="key">The key name. If omitted, the entire <paramref name="section"/> will be deleted.</param>
public static void IniDelete(string file, string section, string key = null)
{
if (Environment.OSVersion.Platform == PlatformID.Win32NT)
{
ErrorLevel = WindowsAPI.WritePrivateProfileString(section, key.Length == 0 ? null : key, null, file) ? 0 : 1;
return;
}
IniWrite(null, file, section, key);
}
/// <summary>
/// Writes a value to a standard format .ini file.
/// </summary>
/// <param name="value">The string or number that will be written to the right of <paramref name="key"/>'s equal sign (=).</param>
/// <param name="file">The name of the file.</param>
/// <param name="section">The section name.</param>
/// <param name="key">The key name.</param>
/// <remarks><see cref="ErrorLevel"/> is set to <c>1</c> if there was a problem or <c>0</c> otherwise.</remarks>
public static void IniWrite(string value, string file, string section, string key)
{
if (Environment.OSVersion.Platform == PlatformID.Win32NT)
{
ErrorLevel = WindowsAPI.WritePrivateProfileString(section, key, value, file) ? 0 : 1;
return;
}
if (!File.Exists(file))
{
ErrorLevel = 1;
return;
}
var within = string.IsNullOrEmpty(section); // already within blank section
var written = false;
section = string.Format(Keyword_IniSectionOpen + "{0}]", section ?? string.Empty);
var sec = string.IsNullOrEmpty(key);
var reader = new StreamReader(file);
var writer = new StringWriter();
string line;
while ((line = reader.ReadLine()) != null)
{
var trimmed = line.Trim();
if (trimmed.StartsWith(section, StringComparison.OrdinalIgnoreCase))
{
within = true;
}
else if (trimmed.StartsWith(Keyword_IniSectionOpen))
{
if (within && !written)
{
if (value != null)
{
writer.WriteLine("{0} {1} {2}", key, Keyword_IniKeyAssign.ToString(), value);
}
written = true;
}
within = false;
}
if (sec && within)
{
continue;
}
if (!sec && trimmed.StartsWith(key, StringComparison.OrdinalIgnoreCase))
{
var post = trimmed.Substring(key.Length).Trim();
if (post.Length != 0 && post[0] == Keyword_IniKeyAssign)
{
if (value != null)
{
writer.WriteLine("{0} {1} {2}", key, Keyword_IniKeyAssign.ToString(), value);
}
written = true;
continue;
}
}
writer.WriteLine(line);
}
reader.Close();
writer.Flush();
var text = writer.ToString();
try
{
File.Delete(file);
File.WriteAllText(file, text);
ErrorLevel = 0;
}
catch (IOException)
{
ErrorLevel = 1;
}
}