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T4模板——一个神奇的代码生成器
阅读量:5161 次
发布时间:2019-06-13

本文共 28147 字,大约阅读时间需要 93 分钟。

  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
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
().Select(row => new DbTable { TableName = row.Field
("tablename"), SchemaName = row.Field
("schemname"), Rows = row.Field
("rows"), HasPrimaryKey = row.Field
("HasPrimaryKey") }).ToList(); } #endregion #region GetDbColumns public static List
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, 100) { Value = string.Format("{0}.{1}.{2}", database, schema, tableName) }; DataTable dt = GetDataTable(connectionString, sql, param); return dt.Rows.Cast
().Select(row => new DbColumn() { ColumnID = row.Field
("ColumnID"), IsPrimaryKey = row.Field
("IsPrimaryKey"), ColumnName = row.Field
("ColumnName"), ColumnType = row.Field
("ColumnType"), IsIdentity = row.Field
("IsIdentity"), IsNullable = row.Field
("IsNullable"), ByteLength = row.Field
("ByteLength"), CharLength = row.Field
("CharLength"), Scale = row.Field
("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 ///
/// 表结构 /// public sealed class DbTable { ///
/// 表名称 /// public string TableName { get; set; } ///
/// 表的架构 /// public string SchemaName { get; set; } ///
/// 表的记录数 /// public int Rows { get; set; } ///
/// 是否含有主键 /// public bool HasPrimaryKey { get; set; } } #endregion #region DbColumn ///
/// 表字段结构 /// public sealed class DbColumn { ///
/// 字段ID /// public int ColumnID { get; set; } ///
/// 是否主键 /// public bool IsPrimaryKey { get; set; } ///
/// 字段名称 /// public string ColumnName { get; set; } ///
/// 字段类型 /// public string ColumnType { get; set; } ///
/// 数据库类型对应的C#类型 /// public string CSharpType { get { return SqlServerDbTypeMap.MapCsharpType(ColumnType); } } ///
/// /// public Type CommonType { get { return SqlServerDbTypeMap.MapCommonType(ColumnType); } } ///
/// 字节长度 /// public int ByteLength { get; set; } ///
/// 字符长度 /// public int CharLength { get; set; } ///
/// 小数位 /// public int Scale { get; set; } ///
/// 是否自增列 /// public bool IsIdentity { get; set; } ///
/// 是否允许空 /// public bool IsNullable { get; set; } ///
/// 描述 /// 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{        ///     /// 实体-<#=tb_name#>     ///     public partial class <#=tb_name#>        {            <#        PushIndent("          ");        foreach (DataColumn dc in ds.Tables[0].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{            ///     /// <#=tb_name#> 操作类    ///     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
fkColumnNames = new List
(); Dictionary
parentTables = new Dictionary
(); 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
fkColumns = new List
(); foreach(string fkColumnName in fkColumnNames) { foreach (DataColumn dc in ds.Tables[0].Columns) { if(dc.ColumnName == fkColumnName) fkColumns.Add(dc); } } List
primaryKeyParamsWithTypes = new List
(); List
primaryKeyParams = new List
(); List
whereItems = new List
(); List
automapItems = new List
(); foreach(DataColumn pk in ds.Tables[0].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 > 0){ if(automapItems.Count > 1) updateAutomap = "new { " + string.Join(", ", automapItems.ToArray()) + " }"; else updateAutomap = automapItems[0]; } #> 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(0, 0, 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 > 0) { if (startRowIndex == 0) startRowIndex = 1; 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
(); } } <# 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)#>, 0, 0, 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 > 0) { if (startRowIndex == 0) startRowIndex = 1; 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
(); } } <#}#><#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[0]#>) .ExecuteReturnLastId
(); <#=this.ToCamelCase(tb_name)#>.<#=primaryKeyParams[0]#> = id; return id > 0; } }<#}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() > 0; } }<#}#> 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() > 0; } } 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() > 0; } } } } <# manager.EndBlock(); } conn.Close(); manager.Process(true); #> <#+ public string ToCamelCase(string value) { if(string.IsNullOrEmpty(value)) return string.Empty; string firstLetter = value.Substring(0, 1); string rest = value.Substring(1, value.Length - 1); 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 upclass Manager {    private class Block {        public String Name;        public int Start, Length;        public bool IncludeInDefault;    }    private Block currentBlock;    private List
files = new List
(); private Block footer = new Block(); private Block header = new Block(); private ITextTemplatingEngineHost host; private StringBuilder template; protected List
generatedFileNames = new List
(); 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
checkOutAction; private Action
> 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
keepFileNames) => ProjectSync(templateProjectItem, keepFileNames); } private static void ProjectSync(EnvDTE.ProjectItem templateProjectItem, IEnumerable
keepFileNames) { var keepFileNameSet = new HashSet
(keepFileNames); var projectFiles = new Dictionary
(); var originalFilePrefix = Path.GetFileNameWithoutExtension(templateProjectItem.get_FileNames(0)) + "."; foreach(EnvDTE.ProjectItem projectItem in templateProjectItem.ProjectItems) projectFiles.Add(projectItem.get_FileNames(0), 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)); } }} #>

 

转载于:https://www.cnblogs.com/hnsongbiao/p/8797163.html

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