/// <summary>
/// 将信息保存到文件中。
/// </summary>
/// <param name="fileName">文件名称</param>
/// <param name="force">是否强制保存？（即使文件内容没有修改也更新文件）</param>
/// <returns>成功/失败？</returns>
public virtual bool Save(string fileName, bool force)
{
if (string.IsNullOrEmpty(this.Name))
{
this.Name = Path.GetFileNameWithoutExtension(fileName);
}
string content = GetContent();
if (content == null)
{
return(false);
}
if (!force && ViTextFile.CompareContent(content, fileName))
{
return(true);
}
try
{
using (StreamWriter writer = ViTextFile.CreateWriter(fileName))
return(this.Write(writer, content));
}
catch (Exception ee)
{
Trace.WriteLine("### [" + ee.Source + "] Exception: " + ee.Message);
Trace.WriteLine("### " + ee.StackTrace);
}
return(false);
}
/// <summary>
/// 得到信息的文本行描述。
/// </summary>
/// <returns>信息的文本行描述。</returns>
public virtual string GetContent()
{
try
{
StringBuilder sbContent = new StringBuilder();
using (StringWriter writer = ViTextFile.CreateWriter(sbContent))
{
if (this.Save(writer))
{
return(sbContent.ToString());
}
}
}
catch (Exception ee)
{
Trace.WriteLine("### [" + ee.Source + "] Exception: " + ee.Message);
Trace.WriteLine("### " + ee.StackTrace);
}
return(null);
}
/// <summary>
/// 修改 POE 文件内部的类型名称。
/// </summary>
/// <param name="fileName">POE 文件名称</param>
/// <param name="typeName">POE 类型名称</param>
/// <returns>成功与否？</returns>
public static bool ChangeName(string fileName, string typeName)
{
try
{
ArrayList alLines = new ArrayList();
// 读取文件所有行
using (StreamReader reader = new StreamReader(fileName, Encoding.Default))
{
ViConnType connType = null;
string oldName = null;
string line, trim, type;
int lineIndex = 0;
while (true)
{
line = reader.ReadLine();
if (line == null)
{
break;
}
++lineIndex;
if (oldName == null)
{
trim = line.Trim();
if (trim.StartsWith("PROGRAM ", StringComparison.OrdinalIgnoreCase))
{
connType = ViConnType.Parse(trim.Substring(8), ViTypeCreation.None);
type = "PROGRAM";
}
else if (trim.StartsWith("FUNCTION_BLOCK ", StringComparison.OrdinalIgnoreCase))
{
connType = ViConnType.Parse(trim.Substring(15), ViTypeCreation.None);
type = "FUNCTION_BLOCK";
}
else if (trim.StartsWith("FUNCTION ", StringComparison.OrdinalIgnoreCase))
{
connType = ViConnType.Parse(trim.Substring(9), ViTypeCreation.Create);
type = "FUNCTION";
}
else
{
alLines.Add(line);
continue;
}
if (connType == null)
{
return(false);
}
oldName = connType.Name;
// 名称一样，不需要修改
if (oldName == typeName)
{
return(true);
}
line = type + ' ' + typeName;
if (connType.Type != null)
{
line += " : " + connType.Type.Name;
}
alLines.Add(line);
}
else
{
alLines.Add(line);
}
}
// 没有读取到类型名称？
if (oldName == null)
{
return(false);
}
}
// 写入所有行
using (StreamWriter writer = ViTextFile.CreateWriter(fileName))
{
foreach (string line in alLines)
{
writer.WriteLine(line);
}
}
// 大功告成
return(true);
}
catch (Exception ee)
{
Trace.WriteLine("### [" + ee.Source + "] Exception: " + ee.Message);
Trace.WriteLine("### " + ee.StackTrace);
}
return(false);
}
