/// <summary>
/// 得到指定 POE 文件的功能块描述信息。
/// </summary>
/// <param name="fileName">POE 文件名称</param>
/// <param name="reader">文本文件读对象</param>
/// <returns>功能块描述信息，null 表示失败。</returns>
public static ViPOEBlockType GetBlockType(string fileName, TextReader reader)
{
ViPOEBlockType blockType = null;
ViConnType connType = null;
int lineIndex = 0;
// 0x00: 没有读取到功能块开始
// 0x01: 读取到功能块开始
// 0x21: 开始 INPUT
// 0x22: 开始 OUTPUT
// 0x23: 开始 IN_OUT
int stage = 0;
while (true)
{
string line = reader.ReadLine();
if (line == null)
{
break;
}
++lineIndex;
line = line.Trim();
if (string.IsNullOrEmpty(line))
{
continue;
}
if (stage == 0x00)
{
if (line.StartsWith("FUNCTION_BLOCK ", StringComparison.OrdinalIgnoreCase))
{
connType = ViConnType.Parse(line.Substring(15), ViTypeCreation.None);
if (connType != null && connType.Type == null)
{
blockType = new ViPOEBlockType(connType.Name, null);
blockType.Comment = connType.Comment;
//
stage = 0x01;
}
else
{
Trace.WriteLine(string.Format("{0}({1}): Invalid FUNCTION_BLOCK declaration!", fileName, lineIndex));
}
}
//else if (line.StartsWith("PROGRAM ", StringComparison.OrdinalIgnoreCase))
//{
// connType = ViConnType.Parse(line.Substring(8), ViTypeCreation.None);
// if (connType != null && connType.Type == null)
// {
// blockType = new ViPOEBlockType(connType.Name, null);
// blockType.Comment = connType.Comment;
// //
// stage = 0x01;
// }
// else
// {
// Trace.WriteLine(string.Format("{0}({1}): Invalid PROGRAM declaration!", fileName, lineIndex));
// }
//}
else if (line.StartsWith("FUNCTION ", StringComparison.OrdinalIgnoreCase))
{
connType = ViConnType.Parse(line.Substring(9), ViTypeCreation.Create);
if (connType != null && connType.Type != null)
{
blockType = new ViPOEBlockType(connType.Name, connType.Type);
blockType.Comment = connType.Comment;
//
stage = 0x01;
}
else
{
Trace.WriteLine(string.Format("{0}({1}): Invalid FUNCTION declaration!", fileName, lineIndex));
}
}
}
else if (stage >= 0x01)
{
if (stage == 0x01 && line.EndsWith("*)") &&
line.StartsWith("(* task usage:", StringComparison.OrdinalIgnoreCase))
{
blockType.ModesDecl = line.Substring(14, line.Length - 16);
}
else if (line.StartsWith(ViTextFile.CommentBegin))
{
// 注释行
}
else if (line.StartsWith("VAR_INPUT", StringComparison.OrdinalIgnoreCase))
{
stage = 0x21;
}
else if (line.StartsWith("VAR_OUTPUT", StringComparison.OrdinalIgnoreCase))
{
stage = 0x22;
}
else if (line.StartsWith("VAR_IN_OUT", StringComparison.OrdinalIgnoreCase))
{
stage = 0x23;
}
else if (line.StartsWith("END_VAR", StringComparison.OrdinalIgnoreCase))
{
stage = 0x01;
}
else if (line.StartsWith("LD ", StringComparison.OrdinalIgnoreCase))
{
break;
}
else if (line.StartsWith("END_FUNCTION", StringComparison.OrdinalIgnoreCase))
{
if (blockType != null)
{
// 功能块后缀描述字符串
blockType.SetSuffixDecl(line);
}
break;
}
else if (stage >= 0x21)
{
connType = ViConnType.Parse(line, ViTypeCreation.Create);
if (connType != null && connType.Type != null)
{
switch ((stage & 0x0F))
{
case 0x01: // INPUT
connType.SetParent(blockType);
blockType.InputConnectors.Add(connType);
break;
case 0x02: // OUTPUT
connType.SetParent(blockType);
blockType.OutputConnectors.Add(connType);
break;
case 0x03: // IN_OUT
connType.SetParent(blockType);
blockType.InputConnectors.Insert(blockType.InOutConnectorCount, connType);
blockType.OutputConnectors.Insert(blockType.InOutConnectorCount, connType);
blockType.InOutConnectorCount = blockType.InOutConnectorCount + 1;
break;
}
}
else
{
Trace.WriteLine(string.Format("{0}({1}): Invalid connection declaration!", fileName, lineIndex));
}
}
}
}
return(blockType);
}
/// <summary>
/// 更新功能块数组列表。
/// </summary>
public override void UpdatePOUs()
{
// 当CPU为null的时候，有可能当前类还未初始化完毕；
if (this.CPU == null)
{
return;
}
this.DeleteAll();
IniFile iniFile = new IniFile(this.SourceFile);
string projectPath = FileName.GetFilePath(this.SourceFile);
int sectionType = 0; // 0 不关心；2 POE；9 LIBRARY
iniFile.LoopSections((section) =>
{
if (section.EndsWith("_FUNCTIONBLOCK", StringComparison.OrdinalIgnoreCase) ||
section.EndsWith("_FUNCTION", StringComparison.OrdinalIgnoreCase))
{
sectionType = 2;
return(true);
}
if (string.Equals(section, "LIBRARY", StringComparison.OrdinalIgnoreCase))
{
sectionType = 9;
return(true);
}
sectionType = 0;
return(false);
}, (key, value) =>
{
if (!string.IsNullOrEmpty(value) && key.IsPrefixIndex("FILE"))
{
string file, hardwareType;
switch (sectionType)
{
case 2:
// 工程本身的功能块
{
file = FileName.GetAbsoluteFileName(projectPath, value);
file = FileName.GetNewExtFileName(file, ".POE");
hardwareType = ViGlobal.GetPathHardwareName(projectPath, file);
// 没有硬件类型名称，或者硬件类型名称匹配的情况下，才将功能块加入
if (string.IsNullOrEmpty(hardwareType) ||
string.Equals(hardwareType, this.CPU.HardwareType, StringComparison.OrdinalIgnoreCase))
{
ViPOEBlockType blockType = ViIECPOEFile.GetBlockType(file);
if (blockType != null)
{
blockType.PouSource = this;
this.AddChild(blockType);
}
}
}
break;
case 9:
// 工程使用的 ViGET 库工程的功能块
{
file = FileName.GetAbsoluteFileName(ViGlobal.ProjODKPath, value);
file = FileName.GetNewExtFileName(file, ".VAR");
// 不能讲把自身作为一个库文件来使用，否则会造成死循环；
if (this.CPU.ProjectFile != null && !this.CPU.ProjectFile.Equals(file, StringComparison.OrdinalIgnoreCase))
{
ViPouSourceCPU cpu = new ViPouSourceCPU()
{
ProjectFile = file,
HardwareType = this.CPU.HardwareType,
};
ViCPUPouSource cpuSource = new ViCPUPouSource(cpu, ViPouAttributes.ProjectLibrary | (this.PouAttributes & ViPouAttributes.Public));
if (cpuSource != null)
{
this.AddChild(cpuSource);
}
}
}
break;
}
}
return(true);
});
// CPU 安装的硬件库的功能块
if (!string.IsNullOrEmpty(this.CPU.CPUName))
{
string globProt = ViGlobal.GetCPUENVPath(projectPath, this.CPU.CPUName) + "GLOBPROT.INC";
string infoFile = ViGlobal.GetCPUENVPath(projectPath, this.CPU.CPUName) + this.CPU.HardwareType + ".ini";
this.AddChild(new ViIncPouSource(globProt, infoFile, ViPouAttributes.CPULibrary | (this.PouAttributes & ViPouAttributes.Public)));
}
// ViGET 全局的功能块。对于安装的库工程，就不要这些信息了，否则就重复了
if (!string.IsNullOrEmpty(this.CPU.CPUName))
{
ArrayList alPouSources = ViGlobal.GetPouSources(this.CPU.HardwareType);
if (alPouSources != null)
{
foreach (ViPouSource source in alPouSources)
{
this.AddChild(source);
}
}
}
}