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Add optional --internal-only parameter #2

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Add optional --internal-only parameter #2

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d2e8d74
Upgrade to net6.0 + clean ups
ITaluone Jan 19, 2023
ec38c81
Add optional `--internal-only` parameter
IT-VBFK Jun 10, 2023
590a5c7
Update binaries
Jun 11, 2023
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9 changes: 5 additions & 4 deletions DotnetEfDbcontextConverter/DotnetEfDbcontextConverter.csproj
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Original file line number Diff line number Diff line change
@@ -1,8 +1,9 @@
<Project Sdk="Microsoft.NET.Sdk">

<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>netcoreapp3.1</TargetFramework>
</PropertyGroup>
<PropertyGroup>
<OutputType>Exe</OutputType>
<TargetFramework>net6.0</TargetFramework>
<LangVersion>LatestMajor</LangVersion>
</PropertyGroup>

</Project>
181 changes: 106 additions & 75 deletions DotnetEfDbcontextConverter/Program.cs
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Original file line number Diff line number Diff line change
@@ -1,94 +1,125 @@
using System;
using System.IO;
using System.Linq;
using System.Text;

namespace DotnetEfDbcontextConverter
namespace DotnetEfDbcontextConverter;

internal class Program
{
class Program
private static void Main(string[] args)
{
static void Main(string[] args)
if (args.Length == 0)
{
if (args.Length == 0)
{
Console.WriteLine(
"Optimizes generated DbContext output of \"dotnet ef dbcontext scaffold\"." + Environment.NewLine +
" - Makes DB schema changeable at runtime" + Environment.NewLine +
" - Removes OnConfiguring method (including connectionString), so you can implement your own partial OnConfiguring method outside the generated context." + Environment.NewLine +
" - Optional parameter --winforms optimizes all generated .cs files in the context file's folder for usage in Windows Forms (grids etc)." + Environment.NewLine +
" - Optional parameter --no-schema does not include the static variable Schema" + Environment.NewLine +
Environment.NewLine +
"Usage: " + Environment.NewLine +
"DotnetEfDbcontextConverter.exe path\\myDbContext.cs [--winforms] [--no-schema]");

Console.ReadKey();

return;
}
Console.WriteLine(
"Optimizes generated DbContext output of \"dotnet ef dbcontext scaffold\"." + Environment.NewLine +
" - Makes DB schema changeable at runtime" + Environment.NewLine +
" - Removes OnConfiguring method (including connectionString), so you can implement your own partial OnConfiguring method outside the generated context." +
Environment.NewLine +
" - Optional parameter --winforms optimizes all generated .cs files in the context file's folder for usage in Windows Forms (grids etc)." +
Environment.NewLine +
" - Optional parameter --no-schema does not include the static variable Schema" + Environment.NewLine +
" - Optional parameter --internal-only makes all model files and the context internal. This is meant for projects with e.g. an sqlite datasource." +
Environment.NewLine +
Environment.NewLine +
"Usage: " + Environment.NewLine +
"DotnetEfDbcontextConverter.exe path\\myDbContext.cs [--winforms] [--no-schema] [--internal-only]");


string file = args[0];

String content = File.ReadAllText(file);
File.Copy(file, file + ".backup", true);

Console.WriteLine("Backup file generated.");

//Get original schema name
var addSchema = !args.Any(a => a == "--no-schema");
var lines = content.Split(Environment.NewLine).ToList();

if (addSchema) {
var schemaPosition = content.IndexOf("entity.ToTable(");
var origSchema = content.Substring(schemaPosition, 50);
try {
origSchema = origSchema.Split(",")[1].Trim().Trim('"');
var schemaEndPosition = origSchema.IndexOf('"');
origSchema = origSchema.Substring(0, schemaEndPosition);
} catch (IndexOutOfRangeException) //As an alternative method, use database name from connection string
{
schemaPosition = content.IndexOf("database=");
if (schemaPosition != -1) {
origSchema = content.Substring(schemaPosition);
origSchema = origSchema.Split(";", 2)[0].Trim().Replace("database=", "").Replace("\"", "").Replace(")", "");
} else // not found; connection string could possibly be anything except a RDBMS (e.g. SQLite-Datasource, ...)
origSchema = "";
}
Console.ReadKey();

//Insert static schema variable declaration
var staticVarDecl = Environment.NewLine + "\t\tpublic static string Schema = \"" + origSchema + "\";" + Environment.NewLine + Environment.NewLine;
if (!content.Contains(staticVarDecl) && origSchema != "") {
var staticVarPosition = content.IndexOf(": DbContext") + 20;
content = content.Insert(staticVarPosition, staticVarDecl);
}
return;
}

//Replace hard-coded schema name with variable
lines = lines.Select(line =>
line.Contains("entity.ToTable") && addSchema
? line.Replace($"\"{ origSchema }\"", "Schema")
: line
).ToList();

var file = args[0];

var content = File.ReadAllText(file);
File.Copy(file, file + ".backup", true);

Console.WriteLine("Backup file generated.");

//Get original schema name
var addSchema = args.All(a => a != "--no-schema");
var lines = content.Split(Environment.NewLine).ToList();

if (addSchema)
{
var schemaPosition = content.IndexOf("entity.ToTable(", StringComparison.Ordinal);
var origSchema = content.Substring(schemaPosition, 50);
try
{
origSchema = origSchema.Split(",")[1].Trim().Trim('"');
var schemaEndPosition = origSchema.IndexOf('"');
origSchema = origSchema[..schemaEndPosition];
}
//Remove OnConfiguring method
var onConfigStartpos = lines.FindIndex(o => o.Contains("protected override void OnConfiguring"));
lines.RemoveRange(onConfigStartpos, 8);

//For better WinForms / grid usage: Replace ICollection and HashSet with BindingList
//(E.g. using parent/child relations in grid, ICollection might have only 2 grid columns like "Count" or "ReadOnly"
//Alternative (untested): Use context.table.ToBindingList() as DataSource as described here: https://blogs.msdn.microsoft.com/efdesign/2010/09/08/data-binding-with-dbcontext/
if (args.Any(a => a == "--winforms"))
catch (IndexOutOfRangeException) //As an alternative method, use database name from connection string
{
var dir = new FileInfo(file).DirectoryName;
foreach (var f in Directory.GetFiles(dir, "*.cs"))
schemaPosition = content.IndexOf("database=", StringComparison.Ordinal);
if (schemaPosition != -1)
{
origSchema = content[schemaPosition..];
origSchema = origSchema.Split(";", 2)[0].Trim().Replace("database=", "").Replace("\"", "")
.Replace(")", "");
}
else // not found; connection string could possibly be anything except a RDBMS (e.g. SQLite-Datasource, ...)
{
var fcontent = File.ReadAllText(f);
fcontent = "using System.ComponentModel;" + Environment.NewLine + fcontent.Replace("ICollection<", "IList<").Replace("HashSet<", "BindingList<");
File.WriteAllText(f, fcontent, System.Text.Encoding.Default);
origSchema = "";
}
}

File.WriteAllLines(file, lines, System.Text.Encoding.Default);
//Insert static schema variable declaration
var staticVarDecl = Environment.NewLine + "\t\tpublic static string Schema = \"" + origSchema + "\";" +
Environment.NewLine + Environment.NewLine;
if (!content.Contains(staticVarDecl) && origSchema != "")
{
var staticVarPosition = content.IndexOf(": DbContext", StringComparison.Ordinal) + 20;
content = content.Insert(staticVarPosition, staticVarDecl);
}

//Replace hard-coded schema name with variable
lines = lines.Select(line =>
line.Contains("entity.ToTable") && addSchema
? line.Replace($"\"{origSchema}\"", "Schema")
: line
).ToList();
}

//Remove OnConfiguring method
var onConfigStartpos = lines.FindIndex(o => o.Contains("protected override void OnConfiguring"));
lines.RemoveRange(onConfigStartpos, 8);

Console.WriteLine("Converting finished.");
File.WriteAllLines(file, lines, Encoding.Default);

//For better WinForms / grid usage: Replace ICollection and HashSet with BindingList
//(E.g. using parent/child relations in grid, ICollection might have only 2 grid columns like "Count" or "ReadOnly"
//Alternative (untested): Use context.table.ToBindingList() as DataSource as described here: https://blogs.msdn.microsoft.com/efdesign/2010/09/08/data-binding-with-dbcontext/
if (args.Any(a => a == "--winforms"))
{
var dir = new FileInfo(file).DirectoryName;
foreach (var f in Directory.GetFiles(dir, "*.cs"))
{
var fcontent = File.ReadAllText(f);
fcontent = "using System.ComponentModel;" + Environment.NewLine +
fcontent.Replace("ICollection<", "IList<").Replace("HashSet<", "BindingList<");
File.WriteAllText(f, fcontent, Encoding.Default);
}
}

if (args.Any(a => a == "--internal-only"))
{
MakeClassesInternal(new FileInfo(file).DirectoryName);
}

Console.WriteLine("Converting finished.");
}

static void MakeClassesInternal(string directory)
{
foreach (var file in Directory.GetFiles(directory, "*.cs"))
{
var content = File.ReadAllText(file);
content = content.Replace("public partial class", "internal partial class");
File.WriteAllText(file, content, Encoding.Default);
}
}
}
}
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