利用T4模板，可以很方便的从数据库映射成Model模型，相当于动软等功效。但动软是可以直接生成三层，抽象工厂的，T4没那么牛叉，所以我们一般只用作生成Modle或者Server等指定方法了。
废话少说，切入正题：
下面我将讲解的有两部分，一部分是根据T4将方法属性等生成到一个类里面，另一个是分配生成到不同类里面。
一.根据T4将方法生成到一个类里面
代码如下:
Customers.tt
<#@ assembly name="System.Core.dll" #>
<#@ assembly name="System.Data.dll" #>
<#@ assembly name="System.Data.DataSetExtensions.dll" #>
<#@ assembly name="System.Xml.dll" #>
<#@ import namespace="System" #>
<#@ import namespace="System.Xml" #>
<#@ import namespace="System.Linq" #>
<#@ import namespace="System.Data" #>
<#@ import namespace="System.Data.SqlClient" #>
<#@ import namespace="System.Collections.Generic" #>
<#@ import namespace="System.IO" #> <#@ include file="$(ProjectDir)DbHelper.ttinclude" #> using System;
namespace T4ConsoleApplication.Entities
{ public class <#=config.TableName#>
{
<# foreach(DbColumn column in DbHelper.GetDbColumns(config.ConnectionString, config.DbDatabase, config.TableName)){#> public <#= column.CSharpType#><# if(column.CommonType.IsValueType && column.IsNullable){#>?<#}#> <#=column.ColumnName#> { get; set; }
<#}#> }
} <#+
public class config
{
//修改要生成的数据库表
public static readonly string ConnectionString="Data Source=.;Integrated Security=true;";
public static readonly string DbDatabase="Inferno";
public static readonly string TableName="RepositoryModel";
}
#>
DbHelper.ttinclude
<#+
public class DbHelper
{
#region GetDbTables public static List<DbTable> GetDbTables(string connectionString, string database, string tables = null)
{ if (!string.IsNullOrEmpty(tables))
{
tables = string.Format(" and obj.name in ('{0}')", tables.Replace(",", "','"));
}
#region SQL
string sql = string.Format(@"SELECT
obj.name tablename,
schem.name schemname,
idx.rows,
CAST
(
CASE
WHEN (SELECT COUNT(1) FROM sys.indexes WHERE object_id= obj.OBJECT_ID AND is_primary_key=1) >=1 THEN 1
ELSE 0
END
AS BIT) HasPrimaryKey
from {0}.sys.objects obj
inner join {0}.dbo.sysindexes idx on obj.object_id=idx.id and idx.indid<=1
INNER JOIN {0}.sys.schemas schem ON obj.schema_id=schem.schema_id
where type='U' {1}
order by obj.name", database, tables);
#endregion
DataTable dt = GetDataTable(connectionString, sql);
return dt.Rows.Cast<DataRow>().Select(row => new DbTable
{
TableName = row.Field<string>("tablename"),
SchemaName = row.Field<string>("schemname"),
Rows = row.Field<int>("rows"),
HasPrimaryKey = row.Field<bool>("HasPrimaryKey")
}).ToList();
}
#endregion #region GetDbColumns public static List<DbColumn> GetDbColumns(string connectionString, string database, string tableName, string schema = "dbo")
{
#region SQL
string sql = string.Format(@"
WITH indexCTE AS
(
SELECT
ic.column_id,
ic.index_column_id,
ic.object_id
FROM {0}.sys.indexes idx
INNER JOIN {0}.sys.index_columns ic ON idx.index_id = ic.index_id AND idx.object_id = ic.object_id
WHERE idx.object_id =OBJECT_ID(@tableName) AND idx.is_primary_key=1
)
select
colm.column_id ColumnID,
CAST(CASE WHEN indexCTE.column_id IS NULL THEN 0 ELSE 1 END AS BIT) IsPrimaryKey,
colm.name ColumnName,
systype.name ColumnType,
colm.is_identity IsIdentity,
colm.is_nullable IsNullable,
cast(colm.max_length as int) ByteLength,
(
case
when systype.name='nvarchar' and colm.max_length>0 then colm.max_length/2
when systype.name='nchar' and colm.max_length>0 then colm.max_length/2
when systype.name='ntext' and colm.max_length>0 then colm.max_length/2
else colm.max_length
end
) CharLength,
cast(colm.precision as int) Precision,
cast(colm.scale as int) Scale,
prop.value Remark
from {0}.sys.columns colm
inner join {0}.sys.types systype on colm.system_type_id=systype.system_type_id and colm.user_type_id=systype.user_type_id
left join {0}.sys.extended_properties prop on colm.object_id=prop.major_id and colm.column_id=prop.minor_id
LEFT JOIN indexCTE ON colm.column_id=indexCTE.column_id AND colm.object_id=indexCTE.object_id
where colm.object_id=OBJECT_ID(@tableName)
order by colm.column_id", database);
#endregion
SqlParameter param = new SqlParameter("@tableName", SqlDbType.NVarChar, ) { Value = string.Format("{0}.{1}.{2}", database, schema, tableName) };
DataTable dt = GetDataTable(connectionString, sql, param); return dt.Rows.Cast<DataRow>().Select(row => new DbColumn()
{
ColumnID = row.Field<int>("ColumnID"),
IsPrimaryKey = row.Field<bool>("IsPrimaryKey"),
ColumnName = row.Field<string>("ColumnName"),
ColumnType = row.Field<string>("ColumnType"),
IsIdentity = row.Field<bool>("IsIdentity"),
IsNullable = row.Field<bool>("IsNullable"),
ByteLength = row.Field<int>("ByteLength"),
CharLength = row.Field<int>("CharLength"),
Scale = row.Field<int>("Scale"),
Remark = row["Remark"].ToString()
}).ToList();
} #endregion #region GetDataTable public static DataTable GetDataTable(string connectionString, string commandText, params SqlParameter[] parms)
{
using (SqlConnection connection = new SqlConnection(connectionString))
{
SqlCommand command = connection.CreateCommand();
command.CommandText = commandText;
command.Parameters.AddRange(parms);
SqlDataAdapter adapter = new SqlDataAdapter(command);
DataTable dt = new DataTable();
adapter.Fill(dt); return dt;
}
} #endregion
} #region DbTable
/// <summary>
/// 表结构
/// </summary>
public sealed class DbTable
{
/// <summary>
/// 表名称
/// </summary>
public string TableName { get; set; }
/// <summary>
/// 表的架构
/// </summary>
public string SchemaName { get; set; }
/// <summary>
/// 表的记录数
/// </summary>
public int Rows { get; set; } /// <summary>
/// 是否含有主键
/// </summary>
public bool HasPrimaryKey { get; set; }
}
#endregion #region DbColumn
/// <summary>
/// 表字段结构
/// </summary>
public sealed class DbColumn
{
/// <summary>
/// 字段ID
/// </summary>
public int ColumnID { get; set; } /// <summary>
/// 是否主键
/// </summary>
public bool IsPrimaryKey { get; set; } /// <summary>
/// 字段名称
/// </summary>
public string ColumnName { get; set; } /// <summary>
/// 字段类型
/// </summary>
public string ColumnType { get; set; } /// <summary>
/// 数据库类型对应的C#类型
/// </summary>
public string CSharpType
{
get
{
return SqlServerDbTypeMap.MapCsharpType(ColumnType);
}
} /// <summary>
///
/// </summary>
public Type CommonType
{
get
{
return SqlServerDbTypeMap.MapCommonType(ColumnType);
}
} /// <summary>
/// 字节长度
/// </summary>
public int ByteLength { get; set; } /// <summary>
/// 字符长度
/// </summary>
public int CharLength { get; set; } /// <summary>
/// 小数位
/// </summary>
public int Scale { get; set; } /// <summary>
/// 是否自增列
/// </summary>
public bool IsIdentity { get; set; } /// <summary>
/// 是否允许空
/// </summary>
public bool IsNullable { get; set; } /// <summary>
/// 描述
/// </summary>
public string Remark { get; set; }
}
#endregion #region SqlServerDbTypeMap public class SqlServerDbTypeMap
{
public static string MapCsharpType(string dbtype)
{
if (string.IsNullOrEmpty(dbtype)) return dbtype;
dbtype = dbtype.ToLower();
string csharpType = "object";
switch (dbtype)
{
case "bigint": csharpType = "long"; break;
case "binary": csharpType = "byte[]"; break;
case "bit": csharpType = "bool"; break;
case "char": csharpType = "string"; break;
case "date": csharpType = "DateTime"; break;
case "datetime": csharpType = "DateTime"; break;
case "datetime2": csharpType = "DateTime"; break;
case "datetimeoffset": csharpType = "DateTimeOffset"; break;
case "decimal": csharpType = "decimal"; break;
case "float": csharpType = "double"; break;
case "image": csharpType = "byte[]"; break;
case "int": csharpType = "int"; break;
case "money": csharpType = "decimal"; break;
case "nchar": csharpType = "string"; break;
case "ntext": csharpType = "string"; break;
case "numeric": csharpType = "decimal"; break;
case "nvarchar": csharpType = "string"; break;
case "real": csharpType = "Single"; break;
case "smalldatetime": csharpType = "DateTime"; break;
case "smallint": csharpType = "short"; break;
case "smallmoney": csharpType = "decimal"; break;
case "sql_variant": csharpType = "object"; break;
case "sysname": csharpType = "object"; break;
case "text": csharpType = "string"; break;
case "time": csharpType = "TimeSpan"; break;
case "timestamp": csharpType = "byte[]"; break;
case "tinyint": csharpType = "byte"; break;
case "uniqueidentifier": csharpType = "Guid"; break;
case "varbinary": csharpType = "byte[]"; break;
case "varchar": csharpType = "string"; break;
case "xml": csharpType = "string"; break;
default: csharpType = "object"; break;
}
return csharpType;
} public static Type MapCommonType(string dbtype)
{
if (string.IsNullOrEmpty(dbtype)) return Type.Missing.GetType();
dbtype = dbtype.ToLower();
Type commonType = typeof(object);
switch (dbtype)
{
case "bigint": commonType = typeof(long); break;
case "binary": commonType = typeof(byte[]); break;
case "bit": commonType = typeof(bool); break;
case "char": commonType = typeof(string); break;
case "date": commonType = typeof(DateTime); break;
case "datetime": commonType = typeof(DateTime); break;
case "datetime2": commonType = typeof(DateTime); break;
case "datetimeoffset": commonType = typeof(DateTimeOffset); break;
case "decimal": commonType = typeof(decimal); break;
case "float": commonType = typeof(double); break;
case "image": commonType = typeof(byte[]); break;
case "int": commonType = typeof(int); break;
case "money": commonType = typeof(decimal); break;
case "nchar": commonType = typeof(string); break;
case "ntext": commonType = typeof(string); break;
case "numeric": commonType = typeof(decimal); break;
case "nvarchar": commonType = typeof(string); break;
case "real": commonType = typeof(Single); break;
case "smalldatetime": commonType = typeof(DateTime); break;
case "smallint": commonType = typeof(short); break;
case "smallmoney": commonType = typeof(decimal); break;
case "sql_variant": commonType = typeof(object); break;
case "sysname": commonType = typeof(object); break;
case "text": commonType = typeof(string); break;
case "time": commonType = typeof(TimeSpan); break;
case "timestamp": commonType = typeof(byte[]); break;
case "tinyint": commonType = typeof(byte); break;
case "uniqueidentifier": commonType = typeof(Guid); break;
case "varbinary": commonType = typeof(byte[]); break;
case "varchar": commonType = typeof(string); break;
case "xml": commonType = typeof(string); break;
default: commonType = typeof(object); break;
}
return commonType;
}
}
#endregion #>
效果展示:
二.根据T4将方法生成到多个类里面
生成实体总结:
Entity.tt
<#@ template debug="false" hostspecific="true" language="C#" #>
<#@ assembly name="System.Data" #>
<#@ assembly name="System.xml" #>
<#@ import namespace="System.Collections.Generic" #>
<#@ import namespace="System.Data.SqlClient" #>
<#@ import namespace="System.Data" #>
<#@ assembly name="System.Core" #>
<#@ import namespace="System.Linq" #> // 导入MultipleOutputHelper.ttinclude文件
<#@ include file="..\MultipleOutputHelper.ttinclude" #> <#
string connectionString= "server=.;database=Inferno;Integrated Security=true;";
SqlConnection conn = new SqlConnection(connectionString);
conn.Open(); string selectQuery ="SET FMTONLY ON; select * from @tableName; SET FMTONLY OFF;";
SqlCommand command = new SqlCommand(selectQuery,conn);
SqlDataAdapter ad = new SqlDataAdapter(command);
System.Data.DataSet ds = new DataSet(); var manager = Manager.Create(Host, GenerationEnvironment); System.Data.DataTable schema = conn.GetSchema("Tables");
foreach(System.Data.DataRow row in schema.Rows)
{
ds.Tables.Clear();
string tb_name= row["TABLE_NAME"].ToString();
command.CommandText = selectQuery.Replace("@tableName",row["TABLE_NAME"].ToString());
ad.FillSchema(ds, SchemaType.Mapped,tb_name); manager.StartNewFile(tb_name+".cs");#> using FluentData;
using System;
using System.Collections.Generic;
namespace MY.Model
{
/// <summary>
/// 实体-<#=tb_name#>
/// </summary>
public partial class <#=tb_name#>
{
<#
PushIndent(" ");
foreach (DataColumn dc in ds.Tables[].Columns)
{
WriteLine("public " + dc.DataType.Name+ (dc.AllowDBNull && dc.DataType.Name.ToLower() != "string" ? "? ": " ") + dc.ColumnName + " { get; set; }");
}
PopIndent();
#>
}
} <#
manager.EndBlock();
}
conn.Close();
manager.Process(true);
#>
业务逻辑总结:
Action.tt
<#@ template debug="false" hostspecific="true" language="C#" #>
<#@ assembly name="System.Data" #>
<#@ assembly name="System.xml" #>
<#@ import namespace="System.Collections.Generic" #>
<#@ import namespace="System.Data.SqlClient" #>
<#@ import namespace="System.Data" #>
<#@ assembly name="System.Core" #>
<#@ import namespace="System.Linq" #> // 导入MultipleOutputHelper.ttinclude文件
<#@ include file="..\MultipleOutputHelper.ttinclude" #>
<#
string connectionString= "server=.;database=Inferno;Integrated Security=true;";
SqlConnection conn = new SqlConnection(connectionString);
conn.Open(); string selectQuery ="SET FMTONLY ON; select * from @tableName; SET FMTONLY OFF;";
SqlCommand command = new SqlCommand(selectQuery,conn);
SqlDataAdapter ad = new SqlDataAdapter(command);
System.Data.DataSet ds = new DataSet(); var manager = Manager.Create(Host, GenerationEnvironment); System.Data.DataTable schema = conn.GetSchema("Tables");
foreach(System.Data.DataRow row in schema.Rows)
{
ds.Tables.Clear();
string tb_name= row["TABLE_NAME"].ToString();
command.CommandText = selectQuery.Replace("@tableName",row["TABLE_NAME"].ToString());
ad.FillSchema(ds, SchemaType.Mapped,tb_name);
manager.StartNewFile(tb_name+"Action.cs");#> using System;
using System.Collections.Generic;
using MY.Model;
namespace MY.BLL
{ /// <summary>
/// <#=tb_name#> 操作类
/// </summary>
public partial class <#=tb_name#>Action
{<#
string fkQuery = " SELECT f.name AS ForeignKey,";
fkQuery += " OBJECT_NAME(f.parent_object_id) AS TableName, ";
fkQuery += " COL_NAME(fc.parent_object_id, fc.parent_column_id) AS ColumnName, ";
fkQuery += " OBJECT_NAME (f.referenced_object_id) AS ReferenceTableName, ";
fkQuery += " COL_NAME(fc.referenced_object_id, fc.referenced_column_id) AS ReferenceColumnName ";
fkQuery += " FROM ";
fkQuery += " sys.foreign_keys AS f ";
fkQuery += " INNER JOIN sys.foreign_key_columns AS fc ON f.OBJECT_ID = fc.constraint_object_id ";
fkQuery += " where OBJECT_NAME(f.parent_object_id) = '" +tb_name +"'"; List<string> fkColumnNames = new List<string>();
Dictionary<string, string> parentTables = new Dictionary<string, string>(); SqlCommand command2 = new SqlCommand(fkQuery,conn);
using(var dr = command2.ExecuteReader())
{
while(dr.Read())
{
fkColumnNames.Add(dr["ColumnName"].ToString());
parentTables.Add(dr["ColumnName"].ToString(), dr["ReferenceTableName"].ToString());
}
dr.Close();
} List<DataColumn> fkColumns = new List<DataColumn>();
foreach(string fkColumnName in fkColumnNames)
{
foreach (DataColumn dc in ds.Tables[].Columns)
{
if(dc.ColumnName == fkColumnName)
fkColumns.Add(dc);
}
} List<string> primaryKeyParamsWithTypes = new List<string>();
List<string> primaryKeyParams = new List<string>();
List<string> whereItems = new List<string>();
List<string> automapItems = new List<string>();
foreach(DataColumn pk in ds.Tables[].PrimaryKey)
{
primaryKeyParamsWithTypes.Add(string.Format("{0} {1}", pk.DataType.Name, this.ToCamelCase(pk.ColumnName)));
primaryKeyParams.Add(pk.ColumnName);
whereItems.Add(string.Format("{0} = @{1}", pk.ColumnName, pk.ColumnName.ToLower()));
automapItems.Add(string.Format("x.{0}", pk.ColumnName));
} string updateAutomap = string.Empty;
if(automapItems.Count > ){
if(automapItems.Count > )
updateAutomap = "new { " + string.Join(", ", automapItems.ToArray()) + " }";
else
updateAutomap = automapItems[];
}
#> public static <#=tb_name#> Select(<#=string.Join(", ", primaryKeyParamsWithTypes.ToArray())#>)
{
using(var context = db.Context())
{
return context.Sql(" SELECT * FROM <#=tb_name#> WHERE <#=string.Join(" AND ", whereItems.ToArray())#> ")
<#foreach(string pkp in primaryKeyParams)
{
WriteLine(".Parameter(\"" + pkp.ToLower() + "\", " + this.ToCamelCase(pkp) + ")");
}
#>
.QuerySingle<<#=tb_name#>>();
}
} public static List<<#=tb_name#>> SelectAll()
{
return SelectAll(string.Empty);
} public static List<<#=tb_name#>> SelectAll(string sortExpression)
{
return SelectAll(, , sortExpression);
} public static List<<#=tb_name#>> SelectAll(int startRowIndex, int maximumRows, string sortExpression)
{
using (var context = db.Context())
{
var select = context.Select<<#=tb_name#>>(" * ")
.From(" <#=tb_name#> "); if (maximumRows > )
{
if (startRowIndex == )
startRowIndex = ; select.Paging(startRowIndex, maximumRows);
} if (!string.IsNullOrEmpty(sortExpression))
select.OrderBy(sortExpression); return select.QueryMany();
}
} public static int CountAll()
{
using (var context = db.Context())
{
return context.Sql(" SELECT COUNT(*) FROM <#=tb_name#> ")
.QuerySingle<int>();
}
} <#
foreach(DataColumn dc in fkColumns)
{
#> public static List<<#=tb_name#>> SelectBy<#=parentTables[dc.ColumnName]#>(<#=dc.DataType.Name#> <#=this.ToCamelCase(dc.ColumnName)#>)
{
return SelectBy<#=parentTables[dc.ColumnName]#>(<#=this.ToCamelCase(dc.ColumnName)#>, string.Empty);
} public static List<<#=tb_name#>> SelectBy<#=parentTables[dc.ColumnName]#>(<#=dc.DataType.Name#> <#=this.ToCamelCase(dc.ColumnName)#>, string sortExpression)
{
return SelectBy<#=parentTables[dc.ColumnName]#>(<#=this.ToCamelCase(dc.ColumnName)#>, , , sortExpression);
} public static List<<#=tb_name#>> SelectBy<#=parentTables[dc.ColumnName]#>(<#=dc.DataType.Name#> <#=this.ToCamelCase(dc.ColumnName)#>, int startRowIndex, int maximumRows, string sortExpression)
{
using (var context = db.Context())
{
var select = context.Select<<#=tb_name#>>(" * ")
.From(" <#=tb_name#> ")
.Where(" <#=dc.ColumnName#> = @<#=dc.ColumnName.ToLower()#> ")
.Parameter("<#=dc.ColumnName.ToLower()#>", <#=this.ToCamelCase(dc.ColumnName)#>); if (maximumRows > )
{
if (startRowIndex == )
startRowIndex = ; select.Paging(startRowIndex, maximumRows);
} if (!string.IsNullOrEmpty(sortExpression))
select.OrderBy(sortExpression); return select.QueryMany();
}
} public static int CountBy<#=parentTables[dc.ColumnName]#>(<#=dc.DataType.Name#> <#=this.ToCamelCase(dc.ColumnName)#>)
{
using (var context = db.Context())
{
return context.Sql(" SELECT COUNT(*) FROM <#=tb_name#> WHERE <#=dc.ColumnName#> = @<#=dc.ColumnName.ToLower()#>")
.Parameter("<#=dc.ColumnName.ToLower()#>", <#=this.ToCamelCase(dc.ColumnName)#>)
.QuerySingle<int>();
}
}
<#}#> <#if(ds.Tables[0].PrimaryKey != null && ds.Tables[0].PrimaryKey.Length == 1 && ds.Tables[0].PrimaryKey[0].AutoIncrement) {#>
public static bool Insert(<#=tb_name#> <#=this.ToCamelCase(tb_name)#>)
{
using (var context = db.Context())
{
int id = context.Insert<<#=tb_name#>>("<#=tb_name#>", <#=this.ToCamelCase(tb_name)#>)
.AutoMap(x => x.<#=primaryKeyParams[]#>)
.ExecuteReturnLastId<int>(); <#=this.ToCamelCase(tb_name)#>.<#=primaryKeyParams[]#> = id;
return id > ;
}
}
<#
}
else
{
#>
public static bool Insert(<#=tb_name#> <#=this.ToCamelCase(tb_name)#>)
{
using (var context =db.Context())
{
return context.Insert<<#=tb_name#>>("<#=tb_name#>", <#=this.ToCamelCase(tb_name)#>)
.Execute() > ;
}
}
<#}#>
public static bool Update(<#=tb_name#> <#=this.ToCamelCase(tb_name)#>)
{
using (var context = db.Context())
{
return context.Update<<#=tb_name#>>("<#=tb_name#>", <#=this.ToCamelCase(tb_name)#>)
.AutoMap(x => <#=updateAutomap#>)
<#foreach(string pkp in primaryKeyParams){#>
.Where("<#=pkp#>", <#=this.ToCamelCase(tb_name)#>.<#=pkp#>)
<#}#>
.Execute() > ;
}
} public static bool Delete(<#=tb_name#> <#=this.ToCamelCase(tb_name)#>)
{
return Delete(<#=string.Join(", ", primaryKeyParams.Select(x=> this.ToCamelCase(tb_name) + "." + x).ToArray())#>);
} public static bool Delete(<#=string.Join(", ", primaryKeyParamsWithTypes.ToArray())#>)
{
using (var context = db.Context())
{
return context.Sql(" DELETE FROM Product WHERE <#=string.Join(" AND ", whereItems.ToArray())#> ")
<#foreach(string pkp in primaryKeyParams) {
WriteLine(".Parameter(\"" + pkp.ToLower() + "\", " + this.ToCamelCase(pkp) + ")");
}#>
.Execute() > ;
}
}
} } <#
manager.EndBlock();
}
conn.Close();
manager.Process(true);
#> <#+
public string ToCamelCase(string value)
{
if(string.IsNullOrEmpty(value))
return string.Empty; string firstLetter = value.Substring(, );
string rest = value.Substring(, value.Length - );
return firstLetter.ToLower() + rest;
}
#>
-----------------------
MultipleOutputHelper.ttinclude代码
<#@ assembly name="System.Core"
#><#@ assembly name="System.Data.Linq"
#><#@ assembly name="EnvDTE"
#><#@ assembly name="System.Xml"
#><#@ assembly name="System.Xml.Linq"
#><#@ import namespace="System"
#><#@ import namespace="System.CodeDom"
#><#@ import namespace="System.CodeDom.Compiler"
#><#@ import namespace="System.Collections.Generic"
#><#@ import namespace="System.Data.Linq"
#><#@ import namespace="System.Data.Linq.Mapping"
#><#@ import namespace="System.IO"
#><#@ import namespace="System.Linq"
#><#@ import namespace="System.Reflection"
#><#@ import namespace="System.Text"
#><#@ import namespace="System.Xml.Linq"
#><#@ import namespace="Microsoft.VisualStudio.TextTemplating"
#><#+ // Manager class records the various blocks so it can split them up
class Manager {
private class Block {
public String Name;
public int Start, Length;
public bool IncludeInDefault;
} private Block currentBlock;
private List<Block> files = new List<Block>();
private Block footer = new Block();
private Block header = new Block();
private ITextTemplatingEngineHost host;
private StringBuilder template;
protected List<String> generatedFileNames = new List<String>(); public static Manager Create(ITextTemplatingEngineHost host, StringBuilder template) {
return (host is IServiceProvider) ? new VSManager(host, template) : new Manager(host, template);
} public void StartNewFile(String name) {
if (name == null)
throw new ArgumentNullException("name");
CurrentBlock = new Block { Name = name };
} public void StartFooter(bool includeInDefault = true) {
CurrentBlock = footer;
footer.IncludeInDefault = includeInDefault;
} public void StartHeader(bool includeInDefault = true) {
CurrentBlock = header;
header.IncludeInDefault = includeInDefault;
} public void EndBlock() {
if (CurrentBlock == null)
return;
CurrentBlock.Length = template.Length - CurrentBlock.Start;
if (CurrentBlock != header && CurrentBlock != footer)
files.Add(CurrentBlock);
currentBlock = null;
} public virtual void Process(bool split, bool sync = true) {
if (split) {
EndBlock();
String headerText = template.ToString(header.Start, header.Length);
String footerText = template.ToString(footer.Start, footer.Length);
String outputPath = Path.GetDirectoryName(host.TemplateFile);
files.Reverse();
if (!footer.IncludeInDefault)
template.Remove(footer.Start, footer.Length);
foreach(Block block in files) {
String fileName = Path.Combine(outputPath, block.Name);
String content = headerText + template.ToString(block.Start, block.Length) + footerText;
generatedFileNames.Add(fileName);
CreateFile(fileName, content);
template.Remove(block.Start, block.Length);
}
if (!header.IncludeInDefault)
template.Remove(header.Start, header.Length);
}
} protected virtual void CreateFile(String fileName, String content) {
if (IsFileContentDifferent(fileName, content))
File.WriteAllText(fileName, content);
} public virtual String GetCustomToolNamespace(String fileName) {
return null;
} public virtual String DefaultProjectNamespace {
get { return null; }
} protected bool IsFileContentDifferent(String fileName, String newContent) {
return !(File.Exists(fileName) && File.ReadAllText(fileName) == newContent);
} private Manager(ITextTemplatingEngineHost host, StringBuilder template) {
this.host = host;
this.template = template;
} private Block CurrentBlock {
get { return currentBlock; }
set {
if (CurrentBlock != null)
EndBlock();
if (value != null)
value.Start = template.Length;
currentBlock = value;
}
} private class VSManager: Manager {
private EnvDTE.ProjectItem templateProjectItem;
private EnvDTE.DTE dte;
private Action<String> checkOutAction;
private Action<IEnumerable<String>> projectSyncAction; public override String DefaultProjectNamespace {
get {
return templateProjectItem.ContainingProject.Properties.Item("DefaultNamespace").Value.ToString();
}
} public override String GetCustomToolNamespace(string fileName) {
return dte.Solution.FindProjectItem(fileName).Properties.Item("CustomToolNamespace").Value.ToString();
} public override void Process(bool split, bool sync) {
if (templateProjectItem.ProjectItems == null)
return;
base.Process(split, sync);
if (sync)
projectSyncAction.EndInvoke(projectSyncAction.BeginInvoke(generatedFileNames, null, null));
} protected override void CreateFile(String fileName, String content) {
if (IsFileContentDifferent(fileName, content)) {
CheckoutFileIfRequired(fileName);
File.WriteAllText(fileName, content);
}
} internal VSManager(ITextTemplatingEngineHost host, StringBuilder template)
: base(host, template) {
var hostServiceProvider = (IServiceProvider) host;
if (hostServiceProvider == null)
throw new ArgumentNullException("Could not obtain IServiceProvider");
dte = (EnvDTE.DTE) hostServiceProvider.GetService(typeof(EnvDTE.DTE));
if (dte == null)
throw new ArgumentNullException("Could not obtain DTE from host");
templateProjectItem = dte.Solution.FindProjectItem(host.TemplateFile);
checkOutAction = (String fileName) => dte.SourceControl.CheckOutItem(fileName);
projectSyncAction = (IEnumerable<String> keepFileNames) => ProjectSync(templateProjectItem, keepFileNames);
} private static void ProjectSync(EnvDTE.ProjectItem templateProjectItem, IEnumerable<String> keepFileNames) {
var keepFileNameSet = new HashSet<String>(keepFileNames);
var projectFiles = new Dictionary<String, EnvDTE.ProjectItem>();
var originalFilePrefix = Path.GetFileNameWithoutExtension(templateProjectItem.get_FileNames()) + ".";
foreach(EnvDTE.ProjectItem projectItem in templateProjectItem.ProjectItems)
projectFiles.Add(projectItem.get_FileNames(), projectItem); // Remove unused items from the project
foreach(var pair in projectFiles)
if (!keepFileNames.Contains(pair.Key) && !(Path.GetFileNameWithoutExtension(pair.Key) + ".").StartsWith(originalFilePrefix))
pair.Value.Delete(); // Add missing files to the project
foreach(String fileName in keepFileNameSet)
if (!projectFiles.ContainsKey(fileName))
templateProjectItem.ProjectItems.AddFromFile(fileName);
} private void CheckoutFileIfRequired(String fileName) {
var sc = dte.SourceControl;
if (sc != null && sc.IsItemUnderSCC(fileName) && !sc.IsItemCheckedOut(fileName))
checkOutAction.EndInvoke(checkOutAction.BeginInvoke(fileName, null, null));
}
}
} #>
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