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CheckNpgsqlStatus.cs
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139 lines (124 loc) · 4.89 KB
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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Xml;
namespace Npgsql.VisualStudio.Provider
{
class CheckNpgsqlStatus
{
public static bool NeedInst
{
get
{
String fpxml = Ut.HostConfig;
if (File.Exists(fpxml))
{
XmlDocument xmlo = new XmlDocument();
xmlo.Load(fpxml);
foreach (XmlElement elAdd in xmlo.SelectNodes("/configuration/system.data/DbProviderFactories/add[@invariant='Npgsql']"))
{
String itsType = Regex.Replace(elAdd.GetAttribute("type"), "\\s+", "").ToLowerInvariant();
String myType = Regex.Replace(typeof(Npgsql.NpgsqlFactory).AssemblyQualifiedName, "\\s+", "").ToLowerInvariant();
if (myType.Equals(itsType))
{
return false;
}
}
}
return true;
}
}
public class Ut
{
public static string HostConfig
{
get
{
return System.Diagnostics.Process.GetCurrentProcess().MainModule.FileName + ".config";
}
}
}
internal static void DoInst()
{
String fpxml = Ut.HostConfig;
if (File.Exists(fpxml))
{
XmlDocument xmlo = new XmlDocument();
if (File.Exists(fpxml))
xmlo.Load(fpxml);
// http://stackoverflow.com/a/722251
foreach (XmlElement el in xmlo.SelectNodes("/configuration/system.data/DbProviderFactories/*[self::add[@invariant='Npgsql'] or self::remove[@invariant='Npgsql']]"))
{
el.ParentNode.RemoveChild(el);
}
{
XmlElement elc = xmlo.SelectSingleNode("configuration") as XmlElement;
if (elc == null)
{
xmlo.AppendChild(elc = xmlo.CreateElement("configuration"));
}
XmlElement els = elc.SelectSingleNode("system.data") as XmlElement;
if (els == null)
{
elc.AppendChild(els = xmlo.CreateElement("system.data"));
}
XmlElement eld = els.SelectSingleNode("DbProviderFactories") as XmlElement;
if (eld == null)
{
els.AppendChild(eld = xmlo.CreateElement("DbProviderFactories"));
}
{
XmlElement elr = xmlo.CreateElement("remove");
{
elr.SetAttribute("invariant", "Npgsql");
}
eld.AppendChild(elr);
}
{
XmlElement ela = xmlo.CreateElement("add");
{
ela.SetAttribute("name", "Npgsql Data Provider");
ela.SetAttribute("invariant", "Npgsql");
ela.SetAttribute("description", ".Net Data Provider for PostgreSQL");
ela.SetAttribute("type", typeof(Npgsql.NpgsqlFactory).AssemblyQualifiedName);
}
eld.AppendChild(ela);
}
}
xmlo.Save(fpxml);
}
}
public static bool NeedUninst
{
get
{
String fpxml = Ut.HostConfig;
if (File.Exists(fpxml)) {
XmlDocument xmlo = new XmlDocument();
xmlo.Load(fpxml);
foreach (XmlElement elAdd in xmlo.SelectNodes("/configuration/system.data/DbProviderFactories/*[self::add[@invariant='Npgsql'] or self::remove[@invariant='Npgsql']]")) {
return true;
}
}
return false;
}
}
internal static void DoUninst() {
String fpxml = Ut.HostConfig;
if (File.Exists(fpxml)) {
XmlDocument xmlo = new XmlDocument();
if (File.Exists(fpxml))
xmlo.Load(fpxml);
// http://stackoverflow.com/a/722251
foreach (XmlElement el in xmlo.SelectNodes("/configuration/system.data/DbProviderFactories/*[self::add[@invariant='Npgsql'] or self::remove[@invariant='Npgsql']]")) {
el.ParentNode.RemoveChild(el);
}
xmlo.Save(fpxml);
}
}
}
}