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https://github.com/modernw/App-Installer-For-Windows-8.x-Reset.git
synced 2026-06-20 22:21:12 +10:00
Update
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Bruce
@@ -0,0 +1,373 @@
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using System;
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using System.Globalization;
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using System.Runtime.InteropServices;
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using System.Text;
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namespace DataUtils
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{
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internal static class NativeMethods
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{
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// GetLocaleInfoW for LCID-based queries
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[DllImport ("kernel32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
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public static extern int GetLocaleInfoW (int Locale, int LCType, [Out] StringBuilder lpLCData, int cchData);
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// GetLocaleInfoEx for locale name based queries
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[DllImport ("kernel32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
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public static extern int GetLocaleInfoEx (string lpLocaleName, int LCType, [Out] StringBuilder lpLCData, int cchData);
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// LocaleNameToLCID - available on Vista+; fallback is to use CultureInfo
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[DllImport ("kernel32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
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public static extern int LocaleNameToLCID (string lpName, uint dwFlags);
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// LCIDToLocaleName (Vista+)
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[DllImport ("kernel32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
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public static extern int LCIDToLocaleName (int Locale, [Out] StringBuilder lpName, int cchName, uint dwFlags);
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}
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[ComVisible (true)]
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[ClassInterface (ClassInterfaceType.AutoDual)]
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public class _I_Locale
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{
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// Current locale name like "en-US"
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public string CurrentLocale
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{
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get
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{
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try
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{
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// prefer thread culture name which reflects user culture
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string name = CultureInfo.CurrentCulture.Name;
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if (string.IsNullOrEmpty (name))
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name = CultureInfo.InstalledUICulture.Name;
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return name ?? string.Empty;
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}
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catch
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{
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return string.Empty;
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}
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}
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}
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// Current LCID (int)
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public int CurrentLCID
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{
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get
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{
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try
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{
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return CultureInfo.CurrentCulture.LCID;
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}
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catch
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{
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return CultureInfo.InvariantCulture.LCID;
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}
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}
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}
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// Convert LCID -> locale name (e.g. 1033 -> "en-US")
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public string ToLocaleName (int lcid)
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{
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try
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{
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// Try managed first
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var ci = new CultureInfo (lcid);
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if (!string.IsNullOrEmpty (ci.Name))
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return ci.Name;
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}
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catch
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{
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// try Win32 LCIDToLocaleName (Vista+)
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try
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{
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StringBuilder sb = new StringBuilder (LOCALE_NAME_MAX_LENGTH);
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int res = NativeMethods.LCIDToLocaleName (lcid, sb, sb.Capacity, 0);
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if (res > 0) return sb.ToString ();
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}
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catch { }
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}
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return string.Empty;
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}
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// Convert locale name -> LCID
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public int ToLCID (string localeName)
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{
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if (string.IsNullOrEmpty (localeName)) return CultureInfo.InvariantCulture.LCID;
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try
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{
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// prefer managed creation
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var ci = new CultureInfo (localeName);
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return ci.LCID;
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}
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catch
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{
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// try Win32 LocaleNameToLCID (Vista+)
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try
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{
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int lcid = NativeMethods.LocaleNameToLCID (localeName, 0);
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if (lcid != 0) return lcid;
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}
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catch { }
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}
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// fallback: invariant culture
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return CultureInfo.InvariantCulture.LCID;
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}
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// Return a locale info string for given LCID and LCTYPE. LCTYPE is the Win32 LOCALE_* constant.
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// Returns a string (or empty string on failure).
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public object LocaleInfo (int lcid, int lctype)
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{
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try
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{
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// First try mapping common LCTYPE values to managed properties for better correctness
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// Some common LCTYPE values:
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// LOCALE_SISO639LANGNAME = 0x59 (89) -> Two-letter ISO language name
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// LOCALE_SISO3166CTRYNAME = 0x5A (90) -> Two-letter country/region name
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// LOCALE_SNAME = 0x5c (92) -> locale name like "en-US" (Vista+)
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// But we cannot rely on all values, so we fallback to native GetLocaleInfoW.
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if (lctype == 0x59) // LOCALE_SISO639LANGNAME
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{
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try
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{
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var ci = new CultureInfo (lcid);
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return ci.TwoLetterISOLanguageName ?? string.Empty;
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}
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catch { }
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}
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else if (lctype == 0x5A) // LOCALE_SISO3166CTRYNAME
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{
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try
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{
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var ci = new CultureInfo (lcid);
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try
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{
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var ri = new RegionInfo (ci.Name);
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return ri.TwoLetterISORegionName ?? string.Empty;
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}
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catch
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{
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// some cultures have no region; fallback to parsing name
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var name = ci.Name;
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if (!string.IsNullOrEmpty (name) && name.IndexOf ('-') >= 0)
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{
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return name.Split ('-') [1];
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}
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}
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}
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catch { }
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}
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else if (lctype == 0x5c) // LOCALE_SNAME
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{
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try
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{
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var ci = new CultureInfo (lcid);
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return ci.Name ?? string.Empty;
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}
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catch { }
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}
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// Fallback to native GetLocaleInfoW
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StringBuilder sb = new StringBuilder (256);
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int ret = NativeMethods.GetLocaleInfoW (lcid, lctype, sb, sb.Capacity);
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if (ret > 0)
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return sb.ToString ();
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return string.Empty;
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}
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catch
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{
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return string.Empty;
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}
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}
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// LocaleInfoEx: query by locale name string and LCTYPE
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// Returns string if available; otherwise returns the integer result code (as int) if string empty (mimic C++ behavior).
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public object LocaleInfoEx (string localeName, int lctype)
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{
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if (string.IsNullOrEmpty (localeName))
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{
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// fall back to current culture name
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localeName = CurrentLocale;
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if (string.IsNullOrEmpty (localeName)) return 0;
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}
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try
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{
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// Try managed shortcuts for common types
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if (lctype == 0x59) // LOCALE_SISO639LANGNAME
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{
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try
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{
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var ci = new CultureInfo (localeName);
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return ci.TwoLetterISOLanguageName ?? string.Empty;
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}
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catch { }
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}
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else if (lctype == 0x5A) // LOCALE_SISO3166CTRYNAME
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{
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try
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{
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var ci = new CultureInfo (localeName);
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var ri = new RegionInfo (ci.Name);
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return ri.TwoLetterISORegionName ?? string.Empty;
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}
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catch
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{
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// try to split
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var parts = localeName.Split (new char [] { '-', '_' }, StringSplitOptions.RemoveEmptyEntries);
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if (parts.Length >= 2) return parts [1];
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}
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}
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else if (lctype == 0x5c) // LOCALE_SNAME
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{
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// localeName is probably already the name
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return localeName;
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}
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// Fallback to GetLocaleInfoEx
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StringBuilder sb = new StringBuilder (LOCALE_NAME_MAX_LENGTH);
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int res = NativeMethods.GetLocaleInfoEx (localeName, lctype, sb, sb.Capacity);
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if (res > 0)
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{
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string outStr = sb.ToString ();
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if (!string.IsNullOrEmpty (outStr))
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return outStr;
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}
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// if nothing returned, return the result code
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return res;
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}
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catch
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{
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return 0;
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}
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}
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// Helpers similar to the C++: restricted (language) and elaborated (region) codes
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public string GetLocaleRestrictedCode (string localeName)
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{
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if (string.IsNullOrEmpty (localeName)) localeName = CurrentLocale;
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try
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{
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var ci = new CultureInfo (localeName);
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return ci.TwoLetterISOLanguageName ?? string.Empty;
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}
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catch
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{
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// fallback: parse name
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var parts = localeName.Split (new char [] { '-', '_' }, StringSplitOptions.RemoveEmptyEntries);
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if (parts.Length >= 1) return parts [0];
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return string.Empty;
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}
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}
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public string GetLocaleElaboratedCode (string localeName)
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{
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if (string.IsNullOrEmpty (localeName)) localeName = CurrentLocale;
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try
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{
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var ci = new CultureInfo (localeName);
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// Region part from RegionInfo
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try
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{
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var ri = new RegionInfo (ci.Name);
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return ri.TwoLetterISORegionName ?? string.Empty;
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}
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catch
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{
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// fallback: parse
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var parts = localeName.Split (new char [] { '-', '_' }, StringSplitOptions.RemoveEmptyEntries);
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if (parts.Length >= 2) return parts [1];
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}
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}
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catch
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{
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var parts = localeName.Split (new char [] { '-', '_' }, StringSplitOptions.RemoveEmptyEntries);
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if (parts.Length >= 2) return parts [1];
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}
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return string.Empty;
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}
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// LCID -> combined code like "en-US" (with configurable separator)
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public string LcidToLocaleCode (int lcid)
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{
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try
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{
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var ci = new CultureInfo (lcid);
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if (!string.IsNullOrEmpty (ci.Name)) return ci.Name;
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}
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catch
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{
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try
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{
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var name = ToLocaleName (lcid);
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if (!string.IsNullOrEmpty (name)) return name;
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}
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catch { }
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}
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return string.Empty;
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}
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// Get the user default locale name
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public string GetUserDefaultLocaleName ()
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{
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try
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{
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// In .NET, CurrentCulture corresponds to user default
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string name = CultureInfo.CurrentCulture.Name;
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if (!string.IsNullOrEmpty (name)) return name;
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}
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catch { }
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return LcidToLocaleCode (CultureInfo.CurrentCulture.LCID);
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}
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// Get system default locale name (machine)
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public string GetSystemDefaultLocaleName ()
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{
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try
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{
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// InstalledUICulture / Invariant fallback
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string name = CultureInfo.InstalledUICulture.Name;
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if (!string.IsNullOrEmpty (name)) return name;
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}
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catch { }
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return LcidToLocaleCode (CultureInfo.InstalledUICulture.LCID);
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}
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// Get computer locale code similar to C++ approach
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public string GetComputerLocaleCode ()
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{
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try
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{
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// Thread culture -> user -> system
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string threadName = System.Threading.Thread.CurrentThread.CurrentCulture.Name;
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if (!string.IsNullOrEmpty (threadName)) return threadName;
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string user = GetUserDefaultLocaleName ();
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if (!string.IsNullOrEmpty (user)) return user;
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string system = GetSystemDefaultLocaleName ();
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if (!string.IsNullOrEmpty (system)) return system;
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}
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catch { }
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// fallback to invariant
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return CultureInfo.InvariantCulture.Name ?? string.Empty;
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}
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// Compare two locale names; returns true if equal by name or LCID
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public bool LocaleNameCompare (string left, string right)
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{
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if (string.Equals (left, right, StringComparison.OrdinalIgnoreCase)) return true;
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try
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{
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int l = ToLCID (left);
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int r = ToLCID (right);
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return l == r && l != CultureInfo.InvariantCulture.LCID;
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}
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catch
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{
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return false;
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}
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}
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// Constants
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private const int LOCALE_NAME_MAX_LENGTH = 85; // defined by Windows
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}
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}
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