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Объявление собственных функций в SQLite3 (замена пробелов на табуляции)

This commit is contained in:
Ivan Nikitin 2014-05-20 20:54:16 +04:00
parent 3970f394b0
commit 1d8cb29dda
2 changed files with 109 additions and 109 deletions
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84
SQLiteExtensions/Shared/SQLite3Extensions.Distance.cs
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@ -4,49 +4,49 @@ using SQLite;
namespace Touchin.SQLiteExtensions namespace Touchin.SQLiteExtensions
{ {
public static partial class SQLite3Extensions public static partial class SQLite3Extensions
{ {
public static void CreateDistanceFunction (this SQLiteConnection connection) public static void CreateDistanceFunction (this SQLiteConnection connection)
{ {
connection.CreateFunction ("DISTANCE", 4, DistanceBody); connection.CreateFunction ("DISTANCE", 4, DistanceBody);
} }
private static double Distance (double latitude1, double longitude1, double latitude2, double longitude2) private static double Distance (double latitude1, double longitude1, double latitude2, double longitude2)
{ {
const double earthRadius = 6378.1; const double earthRadius = 6378.1;
double lat1 = latitude1 * Math.PI / 180; double lat1 = latitude1 * Math.PI / 180;
double lon1 = longitude1 * Math.PI / 180; double lon1 = longitude1 * Math.PI / 180;
double lat2 = latitude2 * Math.PI / 180; double lat2 = latitude2 * Math.PI / 180;
double lon2 = longitude2 * Math.PI / 180; double lon2 = longitude2 * Math.PI / 180;
return earthRadius * Math.Acos (Math.Sin (lat1) * Math.Sin (lat2) + Math.Cos (lat1) * Math.Cos (lat2) * Math.Cos (lon2 - lon1)); return earthRadius * Math.Acos (Math.Sin (lat1) * Math.Sin (lat2) + Math.Cos (lat1) * Math.Cos (lat2) * Math.Cos (lon2 - lon1));
} }
#if __IOS__ #if __IOS__
// https://bugzilla.novell.com/show_bug.cgi?id=576775 // https://bugzilla.novell.com/show_bug.cgi?id=576775
[MonoTouch.MonoPInvokeCallback (typeof (Action<IntPtr, int, IntPtr>))] [MonoTouch.MonoPInvokeCallback (typeof (Action<IntPtr, int, IntPtr>))]
#endif #endif
private static void DistanceBody (IntPtr ctx, int argc, IntPtr argv) private static void DistanceBody (IntPtr ctx, int argc, IntPtr argv)
{ {
IntPtr[] args = ExtractArgs (argc, argv); IntPtr[] args = ExtractArgs (argc, argv);
if (ValueType (args [0]) != SQLite3.ColType.Float || if (ValueType (args [0]) != SQLite3.ColType.Float ||
ValueType (args [1]) != SQLite3.ColType.Float || ValueType (args [1]) != SQLite3.ColType.Float ||
ValueType (args [2]) != SQLite3.ColType.Float || ValueType (args [2]) != SQLite3.ColType.Float ||
ValueType (args [3]) != SQLite3.ColType.Float) ValueType (args [3]) != SQLite3.ColType.Float)
{ {
ResultNull (ctx); ResultNull (ctx);
} }
else else
{ {
double latitude1 = ValueDouble (args [0]); double latitude1 = ValueDouble (args [0]);
double longitude1 = ValueDouble (args [1]); double longitude1 = ValueDouble (args [1]);
double latitude2 = ValueDouble (args [2]); double latitude2 = ValueDouble (args [2]);
double longitude2 = ValueDouble (args [3]); double longitude2 = ValueDouble (args [3]);
double result = Distance (latitude1, longitude1, latitude2, longitude2); double result = Distance (latitude1, longitude1, latitude2, longitude2);
ResultDouble (ctx, result); ResultDouble (ctx, result);
} }
} }
} }
} }

134
SQLiteExtensions/Shared/SQLite3Extensions.cs
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@ -4,79 +4,79 @@ using SQLite;
namespace Touchin.SQLiteExtensions namespace Touchin.SQLiteExtensions
{ {
public static partial class SQLite3Extensions public static partial class SQLite3Extensions
{ {
private static void CreateFunction (this SQLiteConnection connection, string functionName, int paramCount, Action<IntPtr, int, IntPtr> functionBody) private static void CreateFunction (this SQLiteConnection connection, string functionName, int paramCount, Action<IntPtr, int, IntPtr> functionBody)
{ {
var result = CreateFunction (connection.Handle, functionName, paramCount, TextEncoding.UTF8, IntPtr.Zero, functionBody, null, null); var result = CreateFunction (connection.Handle, functionName, paramCount, TextEncoding.UTF8, IntPtr.Zero, functionBody, null, null);
if (result != SQLite3.Result.OK) if (result != SQLite3.Result.OK)
{ {
throw SQLiteException.New (result, "Can not create function"); throw SQLiteException.New (result, "Can not create function");
} }
} }
private static IntPtr [] ExtractArgs (int argc, IntPtr argv) private static IntPtr [] ExtractArgs (int argc, IntPtr argv)
{ {
IntPtr [] args = new IntPtr [argc]; IntPtr [] args = new IntPtr [argc];
Marshal.Copy (argv, args, 0, argc); Marshal.Copy (argv, args, 0, argc);
return args; return args;
} }
// SQLITE_API int sqlite3_create_function( // SQLITE_API int sqlite3_create_function(
// sqlite3 *db, // sqlite3 *db,
// const char *zFunctionName, // const char *zFunctionName,
// int nArg, // int nArg,
// int eTextRep, // int eTextRep,
// void *pApp, // void *pApp,
// void (*xFunc)(sqlite3_context*,int,sqlite3_value**), // void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
// void (*xStep)(sqlite3_context*,int,sqlite3_value**), // void (*xStep)(sqlite3_context*,int,sqlite3_value**),
// void (*xFinal)(sqlite3_context*) // void (*xFinal)(sqlite3_context*)
// ); // );
[DllImport("sqlite3", CallingConvention = CallingConvention.Cdecl, EntryPoint = "sqlite3_create_function")] [DllImport("sqlite3", CallingConvention = CallingConvention.Cdecl, EntryPoint = "sqlite3_create_function")]
private static extern SQLite3.Result CreateFunction ( private static extern SQLite3.Result CreateFunction (
IntPtr db, IntPtr db,
string zFunctionName, string zFunctionName,
int nArg, int nArg,
TextEncoding eTextRep, TextEncoding eTextRep,
IntPtr pApp, IntPtr pApp,
Action<IntPtr, int, IntPtr> xFunc, Action<IntPtr, int, IntPtr> xFunc,
Action<IntPtr, int, IntPtr> xStep, Action<IntPtr, int, IntPtr> xStep,
Action<IntPtr, int, IntPtr> xFinal Action<IntPtr, int, IntPtr> xFinal
); );
#region sqlite3_value #region sqlite3_value
// SQLITE_API int sqlite3_value_type(sqlite3_value*);
[DllImport("sqlite3", CallingConvention = CallingConvention.Cdecl, EntryPoint = "sqlite3_value_type")]
private static extern SQLite3.ColType ValueType (IntPtr value);
// SQLITE_API double sqlite3_value_double(sqlite3_value*);
[DllImport("sqlite3", CallingConvention = CallingConvention.Cdecl, EntryPoint = "sqlite3_value_double")]
private static extern double ValueDouble (IntPtr value);
#endregion // SQLITE_API int sqlite3_value_type(sqlite3_value*);
[DllImport("sqlite3", CallingConvention = CallingConvention.Cdecl, EntryPoint = "sqlite3_value_type")]
private static extern SQLite3.ColType ValueType (IntPtr value);
#region sqlite3_context // SQLITE_API double sqlite3_value_double(sqlite3_value*);
[DllImport("sqlite3", CallingConvention = CallingConvention.Cdecl, EntryPoint = "sqlite3_value_double")]
// SQLITE_API void sqlite3_result_null(sqlite3_context*); private static extern double ValueDouble (IntPtr value);
[DllImport("sqlite3", CallingConvention = CallingConvention.Cdecl, EntryPoint = "sqlite3_result_null")]
private static extern void ResultNull (IntPtr ctx);
// SQLITE_API void sqlite3_result_double(sqlite3_context*, double);
[DllImport("sqlite3", CallingConvention = CallingConvention.Cdecl, EntryPoint = "sqlite3_result_double")]
private static extern void ResultDouble (IntPtr ctx, double value);
#endregion #endregion
// These constant define integer codes that represent the various text encodings supported by SQLite. #region sqlite3_context
private enum TextEncoding
{ // SQLITE_API void sqlite3_result_null(sqlite3_context*);
UTF8 = 1, [DllImport("sqlite3", CallingConvention = CallingConvention.Cdecl, EntryPoint = "sqlite3_result_null")]
UTF16LE = 2, private static extern void ResultNull (IntPtr ctx);
UTF16BE = 3,
UTF16 = 4, /* Use native byte order */ // SQLITE_API void sqlite3_result_double(sqlite3_context*, double);
Any = 5, /* sqlite3_create_function only */ [DllImport("sqlite3", CallingConvention = CallingConvention.Cdecl, EntryPoint = "sqlite3_result_double")]
UTF16Aligned = 8, /* sqlite3_create_collation only */ private static extern void ResultDouble (IntPtr ctx, double value);
}
} #endregion
// These constant define integer codes that represent the various text encodings supported by SQLite.
private enum TextEncoding
{
UTF8 = 1,
UTF16LE = 2,
UTF16BE = 3,
UTF16 = 4, /* Use native byte order */
Any = 5, /* sqlite3_create_function only */
UTF16Aligned = 8, /* sqlite3_create_collation only */
}
}
} }