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// NpgsqlTypes.NpgsqlTypeConvNativeToBackend.cs
//
// Author:
// Glen Parker <glenebob@gmail.com>
//
// Copyright (C) 2004 The Npgsql Development Team
// npgsql-general@gborg.postgresql.org
// http://gborg.postgresql.org/project/npgsql/projdisplay.php
//
// Permission to use, copy, modify, and distribute this software and its
// documentation for any purpose, without fee, and without a written
// agreement is hereby granted, provided that the above copyright notice
// and this paragraph and the following two paragraphs appear in all copies.
//
// IN NO EVENT SHALL THE NPGSQL DEVELOPMENT TEAM BE LIABLE TO ANY PARTY
// FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES,
// INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS
// DOCUMENTATION, EVEN IF THE NPGSQL DEVELOPMENT TEAM HAS BEEN ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.
//
// THE NPGSQL DEVELOPMENT TEAM SPECIFICALLY DISCLAIMS ANY WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
// ON AN "AS IS" BASIS, AND THE NPGSQL DEVELOPMENT TEAM HAS NO OBLIGATIONS
// TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
// This file provides data type converters between PostgreSQL representations
// and .NET objects.
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Net;
using System.Text;
using System.Text.RegularExpressions;
using Npgsql;
namespace NpgsqlTypes
{
/// <summary>
/// Provide event handlers to convert the basic native supported data types from
/// native form to backend representation.
/// </summary>
internal abstract class BasicNativeToBackendTypeConverter
{
// Encapulate the three escapable characters in plan text strings, and their
// escape sequence.
private struct StringEncodingInfo
{
internal readonly byte Quote;
internal readonly string SingleQuoteEscape;
internal readonly string DoubleQuoteEscape;
internal readonly string BackSlashEscape;
internal readonly bool UseConformantStrings;
internal readonly bool UseEPrefix;
internal readonly byte[] ByteaEscape;
internal StringEncodingInfo(byte Quote, string SingleQuoteEscape, string DoubleQuoteEscape, string BackSlashEscape, bool UseConformantStrings, bool UseEPrefix, byte[] ByteaEscape)
{
this.Quote = Quote;
this.SingleQuoteEscape = SingleQuoteEscape;
this.DoubleQuoteEscape = DoubleQuoteEscape;
this.BackSlashEscape = BackSlashEscape;
this.UseConformantStrings = UseConformantStrings;
this.UseEPrefix = UseEPrefix;
this.ByteaEscape = ByteaEscape;
}
}
private static readonly byte[] backslashSingle = BackendEncoding.UTF8Encoding.GetBytes(@"\");
private static readonly byte[] backslashDouble = BackendEncoding.UTF8Encoding.GetBytes(@"\\");
private static readonly byte[] backslashQuad = BackendEncoding.UTF8Encoding.GetBytes(@"\\\\");
private static readonly byte[] escapeEncodingByteMap = BackendEncoding.UTF8Encoding.GetBytes("01234567");
private static readonly byte[] hexEncodingByteMap = BackendEncoding.UTF8Encoding.GetBytes("0123456789ABCDEF");
// There are five possible string escape schemes for the eight possible combinations of the booleans
// extended query, conformant strings, and array value.
// Make them efficiently available using a hash table, avoiding the need for a
// long, nested, cpnfusing if/then construct.
private static readonly StringEncodingInfo[] stringEncodingInfoTable;
static BasicNativeToBackendTypeConverter()
{
stringEncodingInfoTable = new StringEncodingInfo[16];
// Hash value args: forExtendedQuery, UseConformantStrings, Supports_E_StringPrefix, arrayElement
// Note that a combination of UseConformantStrings == true and Supports_E_StringPrefix == false is not possible,
// so those combinations are left out of the table.
stringEncodingInfoTable[StringEncodingInfoHash(true, true, true, false)] = new StringEncodingInfo(0, "", "", "", true, false, backslashSingle);
stringEncodingInfoTable[StringEncodingInfoHash(true, true, true, true)] = new StringEncodingInfo((byte)ASCIIBytes.DoubleQuote, "", @"\", @"\", true, false, backslashDouble);
stringEncodingInfoTable[StringEncodingInfoHash(true, false, false, false)] = new StringEncodingInfo(0, "", "", "", false, false, backslashSingle);
stringEncodingInfoTable[StringEncodingInfoHash(true, false, false, true)] = new StringEncodingInfo((byte)ASCIIBytes.DoubleQuote, "", @"\", @"\", false, false, backslashDouble);
stringEncodingInfoTable[StringEncodingInfoHash(true, false, true, false)] = new StringEncodingInfo(0, "", "", "", false, false, backslashSingle);
stringEncodingInfoTable[StringEncodingInfoHash(true, false, true, true)] = new StringEncodingInfo((byte)ASCIIBytes.DoubleQuote, "", @"\", @"\", false, false, backslashDouble);
stringEncodingInfoTable[StringEncodingInfoHash(false, true, true, false)] = new StringEncodingInfo((byte)ASCIIBytes.SingleQuote, "'", "", "", true, false, backslashSingle);
stringEncodingInfoTable[StringEncodingInfoHash(false, true, true, true)] = new StringEncodingInfo((byte)ASCIIBytes.DoubleQuote, "'", @"\", @"\", true, false, backslashDouble);
stringEncodingInfoTable[StringEncodingInfoHash(false, false, false, false)] = new StringEncodingInfo((byte)ASCIIBytes.SingleQuote, "'", "", @"\", false, false, backslashDouble);
stringEncodingInfoTable[StringEncodingInfoHash(false, false, false, true)] = new StringEncodingInfo((byte)ASCIIBytes.DoubleQuote, "'", @"\\", @"\\\", false, false, backslashQuad);
stringEncodingInfoTable[StringEncodingInfoHash(false, false, true, false)] = new StringEncodingInfo((byte)ASCIIBytes.SingleQuote, "'", "", @"\", false, true, backslashDouble);
stringEncodingInfoTable[StringEncodingInfoHash(false, false, true, true)] = new StringEncodingInfo((byte)ASCIIBytes.DoubleQuote, "'", @"\\", @"\\\", false, false, backslashQuad);
}
private static int StringEncodingInfoHash(bool forExtendedQuery, bool useConformantStrings, bool supports_E_StringPrefix, bool arrayElement)
{
// Default hash indicating simple query, conformant strings, supports e string prefix, and non-array-element.
// This should be the most common combination with current PG backend.
int hashValue = 6; // 0110
if (forExtendedQuery)
{
// Shouldn't happen in the real world because binary encoding will be used.
hashValue |= 1 << 3;
}
if (! useConformantStrings)
{
hashValue ^= 1 << 2;
if (! supports_E_StringPrefix)
{
hashValue ^= 1 << 1;
}
}
if (arrayElement)
{
hashValue |= 1;
}
return hashValue;
}
/// <summary>
/// Convert a string to UTF8 encoded text, escaped and quoted as required.
/// </summary>
internal static byte[] StringToTextText(NpgsqlNativeTypeInfo TypeInfo, Object oNativeData, bool forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
string NativeData = oNativeData.ToString();
StringEncodingInfo encodingInfo;
// Using a four bit hash key derived from the options at hand,
// find the correct string encoding info object.
encodingInfo = stringEncodingInfoTable[
StringEncodingInfoHash(
forExtendedQuery,
options.UseConformantStrings,
options.Supports_E_StringPrefix,
arrayElement
)
];
if (encodingInfo.Quote == 0)
{
// No quoting or escaping needed.
return BackendEncoding.UTF8Encoding.GetBytes(NativeData);
}
// Give the output string builder enough room to start for the string, quotes, E-prefix,
// and 1 in 10 characters needing to be escaped; a WAG.
StringBuilder retQuotedEscaped = new StringBuilder(NativeData.Length + 3 + NativeData.Length / 10);
if (encodingInfo.UseEPrefix)
{
retQuotedEscaped.Append('E');
}
retQuotedEscaped.Append((char)encodingInfo.Quote);
// Escape the string using the escape characters from the lookup.
foreach (char ch in NativeData)
{
switch (ch)
{
case '\'' :
retQuotedEscaped.Append(encodingInfo.SingleQuoteEscape);
break;
case '\"' :
retQuotedEscaped.Append(encodingInfo.DoubleQuoteEscape);
break;
case '\\' :
retQuotedEscaped.Append(encodingInfo.BackSlashEscape);
break;
}
retQuotedEscaped.Append(ch);
}
retQuotedEscaped.Append((char)encodingInfo.Quote);
return BackendEncoding.UTF8Encoding.GetBytes(retQuotedEscaped.ToString());
}
/// <summary>
/// Convert a string to UTF8 encoded text.
/// </summary>
internal static byte[] StringToTextBinary(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, NativeToBackendTypeConverterOptions options)
{
return BackendEncoding.UTF8Encoding.GetBytes(NativeData.ToString());
}
/// <summary>
/// Binary data, escaped and quoted as required.
/// </summary>
internal static byte[] ByteArrayToByteaText(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, bool forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
StringEncodingInfo encodingInfo;
// Using a four bit hash key derived from the options at hand,
// find the correct string encoding info object.
encodingInfo = stringEncodingInfoTable[
StringEncodingInfoHash(
forExtendedQuery,
options.UseConformantStrings,
options.Supports_E_StringPrefix,
arrayElement
)
];
if (! options.SupportsHexByteFormat)
{
return ByteArrayToByteaTextEscaped((byte[])NativeData, encodingInfo);
}
else
{
return ByteArrayToByteaTextHexFormat((byte[])NativeData, encodingInfo);
}
}
/// <summary>
/// Binary data with possible older style octal escapes, quoted.
/// </summary>
private static byte[] ByteArrayToByteaTextEscaped(byte[] nativeData, StringEncodingInfo encodingInfo)
{
// Minimum length for output is input bytes + e-prefix + two quotes.
MemoryStream ret = new MemoryStream(nativeData.Length + (encodingInfo.UseEPrefix ? 1 : 0) + (encodingInfo.Quote != 0 ? 2 : 0));
if (encodingInfo.Quote != 0)
{
if (encodingInfo.UseEPrefix)
{
ret.WriteByte((byte)ASCIIBytes.E);
}
ret.WriteByte(encodingInfo.Quote);
}
foreach (byte b in nativeData)
{
if (b >= 0x20 && b < 0x7F && b != 0x22 && b != 0x27 && b != 0x5C)
{
ret.WriteByte(b);
}
else
{
ret
.WriteBytes(encodingInfo.ByteaEscape)
.WriteBytes(escapeEncodingByteMap[7 & (b >> 6)])
.WriteBytes(escapeEncodingByteMap[7 & (b >> 3)])
.WriteBytes(escapeEncodingByteMap[7 & b]);
}
}
if (encodingInfo.Quote != 0)
{
ret.WriteByte(encodingInfo.Quote);
}
return ret.ToArray();
}
/// <summary>
/// Binary data in the new hex format (>= 9.0), quoted.
/// </summary>
private static byte[] ByteArrayToByteaTextHexFormat(byte[] nativeData, StringEncodingInfo encodingInfo)
{
int i = 0;
byte[] ret = new byte[
(encodingInfo.UseEPrefix ? 1 : 0) + // E prefix
(encodingInfo.Quote != 0 ? 2 : 0) + // quotes
encodingInfo.ByteaEscape.Length + // backslash[es]
1 + // x
(nativeData.Length * 2) // data
];
if (encodingInfo.Quote != 0)
{
if (encodingInfo.UseEPrefix)
{
ret[i++] = (byte)ASCIIBytes.E;
}
ret[i++] = encodingInfo.Quote;
}
foreach (byte bs in encodingInfo.ByteaEscape)
{
ret[i++] = bs;
}
ret[i++] = (byte)ASCIIBytes.x;
foreach (byte b in nativeData)
{
ret[i++] = hexEncodingByteMap[(b >> 4) & 0x0F];
ret[i++] = hexEncodingByteMap[b & 0x0F];
}
if (encodingInfo.Quote != 0)
{
ret[i++] = encodingInfo.Quote;
}
return ret;
}
/// <summary>
/// Binary data, raw.
/// </summary>
internal static byte[] ByteArrayToByteaBinary(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, NativeToBackendTypeConverterOptions options)
{
return (byte[])NativeData;
}
/// <summary>
/// Convert to a postgresql boolean text format.
/// </summary>
internal static byte[] BooleanToBooleanText(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, Boolean forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
return ((bool)NativeData) ? ASCIIByteArrays.TRUE : ASCIIByteArrays.FALSE;
}
/// <summary>
/// Convert to a postgresql boolean binary format.
/// </summary>
internal static byte[] BooleanToBooleanBinary(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, NativeToBackendTypeConverterOptions options)
{
return ((bool)NativeData) ? ASCIIByteArrays.Byte_1 : ASCIIByteArrays.Byte_0;
}
/// <summary>
/// Convert to a postgresql binary int2.
/// </summary>
internal static byte[] Int16ToInt2Binary(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, NativeToBackendTypeConverterOptions options)
{
return BitConverter.GetBytes(IPAddress.HostToNetworkOrder(Convert.ToInt16(NativeData)));
}
/// <summary>
/// Convert to a postgresql binary int4.
/// </summary>
internal static byte[] Int32ToInt4Binary(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, NativeToBackendTypeConverterOptions options)
{
return BitConverter.GetBytes(IPAddress.HostToNetworkOrder(Convert.ToInt32(NativeData)));
}
/// <summary>
/// Convert to a postgresql binary int8.
/// </summary>
internal static byte[] Int64ToInt8Binary(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, NativeToBackendTypeConverterOptions options)
{
return BitConverter.GetBytes(IPAddress.HostToNetworkOrder(Convert.ToInt64(NativeData)));
}
/// <summary>
/// Convert to a postgresql bit.
/// </summary>
internal static byte[] ToBit(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, Boolean forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
if (NativeData is bool)
return ((bool)NativeData) ? ASCIIByteArrays.AsciiDigit_1 : ASCIIByteArrays.AsciiDigit_0;
// It may seem more sensible to just convert an integer to a BitString here and pass it on.
// However behaviour varies in terms of how this is interpretted if being passed to a bitstring
// value smaller than the int.
// Prior to Postgres 8.0, the behaviour would be the same either way. E.g. if 10 were passed to
// a bit(1) then the bits (1010) would be extracted from the left, so resulting in the bitstring B'1'.
// From 8.0 onwards though, if we cast 10 straight to a bit(1) then the right-most bit is taken,
// resulting in B'0'. If we cast it to the "natural" bitstring for it's size first (which is what would
// happen if we did that work here) then it would become B'1010' which would then be cast to bit(1) by
// taking the left-most bit resulting in B'1' (the behaviour one would expect from Postgres 7.x).
//
// Since we don't know what implicit casts (say by inserting into a table with a bitstring field of
// set size) may happen, we don't know how to ensure expected behaviour. While passing a bitstring
// literal would work as expected with Postgres before 8.0, it can fail with 8.0 and later.
else if (NativeData is int)
return BackendEncoding.UTF8Encoding.GetBytes(NativeData.ToString());
else
return BackendEncoding.UTF8Encoding.GetBytes(((BitString)NativeData).ToString("E"));
}
/// <summary>
/// Convert to a postgresql timestamp.
/// </summary>
internal static byte[] ToDateTime(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, Boolean forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
if (!(NativeData is DateTime))
{
return ExtendedNativeToBackendTypeConverter.ToTimeStamp(TypeInfo, NativeData, forExtendedQuery, options, arrayElement);
}
if (DateTime.MaxValue.Equals(NativeData))
{
return ASCIIByteArrays.INFINITY;
}
if (DateTime.MinValue.Equals(NativeData))
{
return ASCIIByteArrays.NEG_INFINITY;
}
return BackendEncoding.UTF8Encoding.GetBytes((((DateTime)NativeData).ToString("yyyy-MM-dd HH:mm:ss.ffffff", DateTimeFormatInfo.InvariantInfo)));
}
/// <summary>
/// Convert to a postgresql date.
/// </summary>
internal static byte[] ToDate(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, Boolean forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
if (!(NativeData is DateTime))
{
return ExtendedNativeToBackendTypeConverter.ToDate(TypeInfo, NativeData, forExtendedQuery, options, arrayElement);
}
return BackendEncoding.UTF8Encoding.GetBytes(((DateTime)NativeData).ToString("yyyy-MM-dd", DateTimeFormatInfo.InvariantInfo));
}
/// <summary>
/// Convert to a postgresql time.
/// </summary>
internal static byte[] ToTime(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, Boolean forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
if (!(NativeData is DateTime))
{
return ExtendedNativeToBackendTypeConverter.ToTime(TypeInfo, NativeData, forExtendedQuery, options, arrayElement);
}
else
{
return BackendEncoding.UTF8Encoding.GetBytes(((DateTime)NativeData).ToString("HH:mm:ss.ffffff", DateTimeFormatInfo.InvariantInfo));
}
}
/// <summary>
/// Convert to a postgres money.
/// </summary>
internal static byte[] ToMoney(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, Boolean forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
//Formats accepted vary according to locale, but it always accepts a plain number (no currency or
//grouping symbols) passed as a string (with the appropriate cast appended, as UseCast will cause
//to happen.
return BackendEncoding.UTF8Encoding.GetBytes(((IFormattable)NativeData).ToString(null, CultureInfo.InvariantCulture.NumberFormat));
}
internal static byte[] ToBasicType<T>(NpgsqlNativeTypeInfo TypeInfo, object NativeData, Boolean forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
// This double cast is needed in order to get the enum type handled correctly (IConvertible)
// and the decimal separator always as "." regardless of culture (IFormattable)
return BackendEncoding.UTF8Encoding.GetBytes((((IFormattable)((IConvertible)NativeData).ToType(typeof(T), null)).ToString(null, CultureInfo.InvariantCulture.NumberFormat)));
}
/// <summary>
/// Convert to a postgres double with maximum precision.
/// </summary>
internal static byte[] SingleDoubleToFloat4Float8Text(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, Boolean forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
//Formats accepted vary according to locale, but it always accepts a plain number (no currency or
//grouping symbols) passed as a string (with the appropriate cast appended, as UseCast will cause
//to happen.
return BackendEncoding.UTF8Encoding.GetBytes(((IFormattable)NativeData).ToString("R", CultureInfo.InvariantCulture.NumberFormat));
}
/// <summary>
/// Convert a System.Float to a postgres float4.
/// </summary>
internal static byte[] SingleToFloat4Binary(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, NativeToBackendTypeConverterOptions options)
{
return PGUtil.HostNetworkByteOrderSwap(BitConverter.GetBytes(Convert.ToSingle(NativeData)));
}
/// <summary>
/// Convert a System.Double to a postgres float8.
/// </summary>
internal static byte[] DoubleToFloat8Binary(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, NativeToBackendTypeConverterOptions options)
{
return PGUtil.HostNetworkByteOrderSwap(BitConverter.GetBytes(Convert.ToDouble(NativeData)));
}
}
/// <summary>
/// Provide event handlers to convert extended native supported data types from
/// native form to backend representation.
/// </summary>
internal abstract class ExtendedNativeToBackendTypeConverter
{
/// <summary>
/// Point.
/// </summary>
internal static byte[] ToPoint(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, Boolean forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
if (NativeData is NpgsqlPoint)
{
NpgsqlPoint P = (NpgsqlPoint)NativeData;
return BackendEncoding.UTF8Encoding.GetBytes(String.Format(CultureInfo.InvariantCulture, "({0},{1})", P.X, P.Y));
}
else
{
throw new InvalidCastException("Unable to cast data to NpgsqlPoint type");
}
}
/// <summary>
/// Box.
/// </summary>
internal static byte[] ToBox(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, Boolean forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
/*if (NativeData.GetType() == typeof(Rectangle)) {
Rectangle R = (Rectangle)NativeData;
return String.Format(CultureInfo.InvariantCulture, "({0},{1}),({2},{3})", R.Left, R.Top, R.Left + R.Width, R.Top + R.Height);
} else if (NativeData.GetType() == typeof(RectangleF)) {
RectangleF R = (RectangleF)NativeData;
return String.Format(CultureInfo.InvariantCulture, "({0},{1}),({2},{3})", R.Left, R.Top, R.Left + R.Width, R.Top + R.Height);*/
if (NativeData is NpgsqlBox)
{
NpgsqlBox box = (NpgsqlBox)NativeData;
return
BackendEncoding.UTF8Encoding.GetBytes(String.Format(CultureInfo.InvariantCulture, "({0},{1}),({2},{3})", box.LowerLeft.X, box.LowerLeft.Y,
box.UpperRight.X, box.UpperRight.Y));
}
else
{
throw new InvalidCastException("Unable to cast data to Rectangle type");
}
}
/// <summary>
/// LSeg.
/// </summary>
internal static byte[] ToLSeg(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, Boolean forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
NpgsqlLSeg S = (NpgsqlLSeg)NativeData;
return BackendEncoding.UTF8Encoding.GetBytes(String.Format(CultureInfo.InvariantCulture, "{0},{1},{2},{3}", S.Start.X, S.Start.Y, S.End.X, S.End.Y));
}
/// <summary>
/// Open path.
/// </summary>
internal static byte[] ToPath(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, Boolean forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
StringBuilder B = null;
try
{
B = new StringBuilder();
foreach (NpgsqlPoint P in ((NpgsqlPath)NativeData))
{
B.AppendFormat(CultureInfo.InvariantCulture, "{0}({1},{2})", (B.Length > 0 ? "," : ""), P.X, P.Y);
}
return BackendEncoding.UTF8Encoding.GetBytes(String.Format("[{0}]", B));
}
finally
{
B = null;
}
}
/// <summary>
/// Polygon.
/// </summary>
internal static byte[] ToPolygon(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, Boolean forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
StringBuilder B = new StringBuilder();
foreach (NpgsqlPoint P in ((NpgsqlPolygon)NativeData))
{
B.AppendFormat(CultureInfo.InvariantCulture, "{0}({1},{2})", (B.Length > 0 ? "," : ""), P.X, P.Y);
}
return BackendEncoding.UTF8Encoding.GetBytes(String.Format("({0})", B));
}
/// <summary>
/// Convert to a postgres MAC Address.
/// </summary>
internal static byte[] ToMacAddress(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, Boolean forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
if (NativeData is NpgsqlMacAddress)
{
return BackendEncoding.UTF8Encoding.GetBytes(((NpgsqlMacAddress)NativeData).ToString());
}
return BackendEncoding.UTF8Encoding.GetBytes(NativeData.ToString());
}
/// <summary>
/// Circle.
/// </summary>
internal static byte[] ToCircle(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, Boolean forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
NpgsqlCircle C = (NpgsqlCircle)NativeData;
return BackendEncoding.UTF8Encoding.GetBytes(String.Format(CultureInfo.InvariantCulture, "{0},{1},{2}", C.Center.X, C.Center.Y, C.Radius));
}
/// <summary>
/// Convert to a postgres inet.
/// </summary>
internal static byte[] ToIPAddress(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, Boolean forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
if (NativeData is NpgsqlInet)
{
return BackendEncoding.UTF8Encoding.GetBytes(((NpgsqlInet)NativeData).ToString());
}
return BackendEncoding.UTF8Encoding.GetBytes(NativeData.ToString());
}
/// <summary>
/// Convert to a postgres interval
/// </summary>
internal static byte[] ToInterval(NpgsqlNativeTypeInfo TypeInfo, Object NativeData, Boolean forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
return
BackendEncoding.UTF8Encoding.GetBytes(((NativeData is TimeSpan)
? ((NpgsqlInterval)(TimeSpan)NativeData).ToString()
: ((NpgsqlInterval)NativeData).ToString()));
}
internal static byte[] ToTime(NpgsqlNativeTypeInfo typeInfo, object nativeData, Boolean forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
if (nativeData is DateTime)
{
return BasicNativeToBackendTypeConverter.ToTime(typeInfo, nativeData, forExtendedQuery, options, arrayElement);
}
NpgsqlTime time;
if (nativeData is TimeSpan)
{
time = (NpgsqlTime)(TimeSpan)nativeData;
}
else
{
time = (NpgsqlTime)nativeData;
}
return BackendEncoding.UTF8Encoding.GetBytes(time.ToString());
}
internal static byte[] ToTimeTZ(NpgsqlNativeTypeInfo typeInfo, object nativeData, Boolean forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
if (nativeData is DateTime)
{
return BasicNativeToBackendTypeConverter.ToTime(typeInfo, nativeData, forExtendedQuery, options, arrayElement);
}
NpgsqlTimeTZ time;
if (nativeData is TimeSpan)
{
time = (NpgsqlTimeTZ)(TimeSpan)nativeData;
}
else
{
time = (NpgsqlTimeTZ)nativeData;
}
return BackendEncoding.UTF8Encoding.GetBytes(time.ToString());
}
internal static byte[] ToDate(NpgsqlNativeTypeInfo typeInfo, object nativeData, Boolean forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
if (nativeData is DateTime)
{
return BasicNativeToBackendTypeConverter.ToDate(typeInfo, nativeData, forExtendedQuery, options, arrayElement);
}
else
{
return BackendEncoding.UTF8Encoding.GetBytes(nativeData.ToString());
}
}
internal static byte[] ToTimeStamp(NpgsqlNativeTypeInfo typeInfo, object nativeData, Boolean forExtendedQuery, NativeToBackendTypeConverterOptions options, bool arrayElement)
{
if (nativeData is DateTime)
{
return BasicNativeToBackendTypeConverter.ToDateTime(typeInfo, nativeData, forExtendedQuery, options, arrayElement);
}
else
{
return BackendEncoding.UTF8Encoding.GetBytes(nativeData.ToString());
}
}
}
}