using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using NewLife;
using NewLife.Model;
using NewLife.Reflection;
using XCode.DataAccessLayer;
using XTemplate.Templating;
namespace XCoder
{
/// <summary>代码生成引擎</summary>
public class Engine
{
#region 属性
public const String TemplatePath = "Template";
private static Dictionary<String, String> _Templates;
/// <summary>模版</summary>
public static Dictionary<String, String> Templates { get { return _Templates ?? (_Templates = Source.GetTemplates()); } }
private static List<String> _FileTemplates;
/// <summary>文件模版</summary>
public static List<String> FileTemplates
{
get
{
if (_FileTemplates == null)
{
var list = new List<String>();
var dir = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, TemplatePath);
if (Directory.Exists(dir))
{
var ds = Directory.GetDirectories(dir);
if (ds != null && ds.Length > 0)
{
foreach (var item in ds)
{
var di = new DirectoryInfo(item);
list.Add(di.Name);
}
}
}
_FileTemplates = list.OrderBy(e => e).ToList();
}
return _FileTemplates;
}
}
public Engine(ModelConfig config)
{
Config = config;
}
private ModelConfig _Config;
/// <summary>配置</summary>
public ModelConfig Config { get { return _Config; } set { _Config = value; } }
//private String _LastTableKey;
//private List<IDataTable> _LastTables;
private List<IDataTable> _Tables;
/// <summary>所有表</summary>
public List<IDataTable> Tables
{
get
{
//if (!Config.NeedFix) return _Tables;
//// 不同的前缀、大小写选项,得到的表集合是不一样的。这里用字典来缓存
//var key = String.Format("{0}_{1}_{2}_{3}_{4}", Config.AutoCutPrefix, Config.AutoCutTableName, Config.AutoFixWord, Config.Prefix, Config.UseID);
////return _cache.GetItem(key, k => FixTable(_Tables));
//if (_LastTableKey != key)
//{
// _LastTables = FixTable(_Tables);
// _LastTableKey = key;
//}
//return _LastTables;
return _Tables;
}
set { _Tables = value; }
}
//private static ITranslate _Translate;
///// <summary>翻译接口</summary>
//static ITranslate Translate { get { return _Translate ?? (_Translate = new NnhyServiceTranslate()); } }
#endregion
#region 构造
static Engine()
{
Template.BaseClassName = typeof(XCoderBase).FullName;
}
#endregion
#region 生成
/// <summary>生成代码,参数由Config传入</summary>
/// <param name="tableName"></param>
/// <returns></returns>
public String[] Render(String tableName)
{
var tables = Tables;
if (tables == null || tables.Count < 1) return null;
//var table = tables.Find(e => e.Name.EqualIC(tableName) || e.TableName.EqualIC(tableName));
var table = tables.Find(e => tableName.EqualIgnoreCase(e.Name, e.TableName));
if (table == null) return null;
return Render(table);
}
public String[] Render(IDataTable table)
{
// 检查表格完整性
foreach (var dc in table.Columns)
{
if (dc.DataType == null) throw new ArgumentException("{0}.DataType数据类型错误".F(dc.Name), dc.Name);
}
var data = new Dictionary<String, Object>(StringComparer.OrdinalIgnoreCase);
//data["Config"] = Config;
data["Tables"] = Tables;
data["Table"] = table;
#region 配置
// 复制表属性到配置
var cfg = new ModelConfig();
foreach (var pi in cfg.GetType().GetProperties(true))
{
if (table.Properties.ContainsKey(pi.Name))
cfg.SetValue(pi, table.Properties[pi.Name]);
else
cfg.SetValue(pi, Config.GetValue(pi));
}
#region 命名空间处理
var NameSpace = cfg.NameSpace;
var reg = new Regex(@"\$\((\w+)\)", RegexOptions.Compiled);
NameSpace = reg.Replace(NameSpace, math =>
{
var key = math.Groups[1].Value;
if (String.IsNullOrEmpty(key)) return null;
var pix = typeof(IDataTable).GetPropertyEx(key);
if (pix != null)
return (String)table.GetValue(pix);
else
return table.Properties[key];
});
NewLife.Log.XTrace.WriteLine("NameSpace" + Config.NameSpace + "@" + NameSpace);
cfg.NameSpace = NameSpace;
#endregion
data["Config"] = cfg;
#endregion
#region 模版预处理
// 声明模版引擎
//Template tt = new Template();
Template.Debug = Config.Debug;
var templates = new Dictionary<String, String>();
// 每一个模版的编码,用于作为输出文件的编码
var encs = new List<Encoding>();
var tempName = Config.TemplateName;
var tempKind = "";
var p = tempName.IndexOf(']');
if (p >= 0)
{
tempKind = tempName.Substring(0, p + 1);
tempName = tempName.Substring(p + 1);
}
if (tempKind == "[内置]")
{
// 系统模版
foreach (var item in Templates)
{
var key = item.Key;
var name = key.Substring(0, key.IndexOf("."));
if (name != tempName) continue;
var content = item.Value;
// 添加文件头
if (Config.UseHeadTemplate && !String.IsNullOrEmpty(Config.HeadTemplate) && key.EndsWithIgnoreCase(".cs"))
content = Config.HeadTemplate + content;
templates.Add(key.Substring(name.Length + 1), content);
encs.Add(Encoding.UTF8);
}
}
else
{
// 文件模版
//var dir = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, TemplatePath);
//dir = Path.Combine(dir, tempName);
var dir = TemplatePath.GetFullPath().CombinePath(tempName);
if (!Directory.Exists(dir)) throw new XException("找不到模版目录{0},没有可用模版!", dir);
var ss = Directory.GetFiles(dir, "*.*", SearchOption.TopDirectoryOnly);
if (ss != null && ss.Length > 0)
{
foreach (var item in ss)
{
if (item.EndsWithIgnoreCase("scc")) continue;
var content = File.ReadAllText(item);
var name = item.Substring(dir.Length);
if (name.StartsWith(@"\")) name = name.Substring(1);
// 添加文件头
if (Config.UseHeadTemplate && !String.IsNullOrEmpty(Config.HeadTemplate) && name.EndsWithIgnoreCase(".cs"))
content = Config.HeadTemplate + content;
templates.Add(name, content);
encs.Add(GetEncoding(item));
}
}
}
if (templates.Count < 1) throw new Exception("没有可用模版!");
var tt = Template.Create(templates);
if (tempName.StartsWith("*")) tempName = tempName.Substring(1);
tt.AssemblyName = tempName;
#endregion
#region 输出目录预处理
var outpath = Config.OutputPath;
// 使用正则替换处理 命名空间处已经定义
//var reg = new Regex(@"\$\((\w+)\)", RegexOptions.Compiled);
outpath = reg.Replace(outpath, math =>
{
var key = math.Groups[1].Value;
if (String.IsNullOrEmpty(key)) return null;
var pix = typeof(IDataTable).GetPropertyEx(key);
if (pix != null)
return (String)table.GetValue(pix);
else
return table.Properties[key];
});
#endregion
#region 编译生成
// 编译模版。这里至少要处理,只有经过了处理,才知道模版项是不是被包含的
tt.Compile();
var rs = new List<String>();
var i = -1;
foreach (var item in tt.Templates)
{
i++;
if (item.Included) continue;
// 计算输出文件名
var fileName = Path.GetFileName(item.Name);
var fname = Config.UseCNFileName ? table.DisplayName : table.Name;
fname = fname.Replace("/", "_").Replace("\\", "_").Replace("?", null);
// 如果中文名无效,采用英文名
if (String.IsNullOrEmpty(Path.GetFileNameWithoutExtension(fname)) || fname[0] == '.') fname = table.Name;
fileName = fileName.Replace("类名", fname).Replace("中文名", fname).Replace("连接名", Config.EntityConnName);
fileName = Path.Combine(outpath, fileName);
// 如果不覆盖,并且目标文件已存在,则跳过
if (!Config.Override && File.Exists(fileName)) continue;
var content = tt.Render(item.Name, data);
var dir = Path.GetDirectoryName(fileName);
if (!String.IsNullOrEmpty(dir) && !Directory.Exists(dir)) Directory.CreateDirectory(dir);
//File.WriteAllText(fileName, content, Encoding.UTF8);
// 将文件保存为utf-8无bom格式
//File.WriteAllText(fileName, content, new UTF8Encoding(false));
// aspx页面如果不是UTF8编码,很有可能出现页面中文乱码,CMX生成的页面文件出现该情况
// 使用模版文件本身的文件编码来作为输出文件的编码,默认UTF8
File.WriteAllText(fileName, content, encs[i]);
rs.Add(content);
}
return rs.ToArray();
#endregion
}
#endregion
#region 辅助
/// <summary>获取文件编码</summary>
/// <param name="file"></param>
/// <returns></returns>
static Encoding GetEncoding(String file)
{
if (String.IsNullOrEmpty(file) || !File.Exists(file)) return Encoding.UTF8;
using (var reader = new StreamReader(file, Encoding.UTF8, true))
{
return reader.CurrentEncoding;
}
}
#endregion
}
}
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