CReadOrder.cpp

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/*
                    GNU GENERAL PUBLIC LICENSE
                       Version 2, June 1991

 Copyright (C) 1989, 1991 Free Software Foundation, Inc.
                       59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 Everyone is permitted to copy and distribute verbatim copies
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*/
static const char* Copyright = "(C) Copyright Michigan State University 1977, All rights reserved";

#include "CReadOrder.h"                                 
#include <spectrodaq.h>
#include <string>
#include <algorithm>
#include <TCLInterpreter.h>
#include <TCLResult.h>
#include <vector>
#include "CModuleCommand.h"
#include "CReadableObject.h"
#include "CDigitizerDictionary.h"
#include "CReadException.h"
#include "CConfigurationParameter.h"
#include "CIntConfigParam.h"
#include "CBoolConfigParam.h"

CReadOrder::CReadOrder (CTCLInterpreter* pInterp,
                        CDigitizerDictionary* pDict,
                        const string& rCommand)  :
        CReadableObject(rCommand, *pInterp),
        m_pModules(pDict),
        m_nPacketId(-1),
        m_fPacketize(false),
        m_pPacketIdParam(0),
        m_pPacketizeParam(0)
{  
  CConfigurableObject::ParameterIterator p;
  p                 = AddBoolParam("packetize", false);
  m_pPacketizeParam = (CBoolConfigParam*)(*p);
  p                 = AddIntParam("id",-1); // Start with illegal id.
  m_pPacketIdParam  = (CIntConfigParam*)(*p);
  m_pPacketIdParam->setRange(0, 0xffff);    // The id  must fit in a word. 

  
} 
CReadOrder::~CReadOrder ( )  //Destructor - Delete dynamic objects
{
  OnDelete();
}



// Functions for class CReadOrder

void 
CReadOrder::Add(CReadableObject* pModule)  
{ 
  if(pModule) {
    pModule->Link(this);        // Link the module to us...
    m_ReadoutList.push_back(pModule);
  }
  else {
    throw string("CReadOrderAdd:: pModule is a null pointer!");
  }
}  

void 
CReadOrder::Remove(ModuleIterator p)  
{ 
   if(p != readerend()) {
     (*p)->Unlink();
     m_ReadoutList.erase(p);
   }
   else {
     throw string("CReadOrder::Remove - ModuleIterator p == readerend()!");
   }
}  
void
CReadOrder::Remove(CReadableObject* pModule) 
{
  if(pModule) {
    ModuleIterator p = find(readerbegin(), readerend(), pModule);
    Remove(p);
  }
  else {
    throw string("CReadOrder::Remove - pModule is a null pointer!");
  }

}

void 
CReadOrder::Initialize()  
{
  
  m_fPacketize = m_pPacketizeParam->getOptionValue();
  m_nPacketId  = m_pPacketIdParam->getOptionValue();
  if(m_fPacketize && (m_nPacketId < 0)) {
    throw string("CReadorder::Initialize- packetization enabled, but no id set");
  }
  ModuleInitialize init;
  for_each(readerbegin(), readerend(), init);
}  

void 
CReadOrder::Prepare()  
{
    ModulePrepare prepare;
    for_each(readerbegin(), readerend(), prepare);
}  

void 
CReadOrder::Read(DAQWordBufferPtr& p)  
{ 
  DAQWordBufferPtr size = p;
  CReadException   except;

  if(m_fPacketize) {
    ++p;
    *p = m_nPacketId;
    ++p;
  }
  try {
    ModuleIterator pM = readerbegin();
    while( pM != readerend()) {
      CReadableObject* pModule = *pM;
      pModule->Read(p);
      pM++;
    }
  }
  catch (string msg) {
    except.Add(msg, p.GetIndex() - size.GetIndex());
  }
  catch (CReadException e) {
    except.Add(e.GetString(), e.GetCount());
  }
  catch (...) {
    except.Add("Unexpected exception",
               p.GetIndex()- size.GetIndex());
  }
  if(m_fPacketize) {
    *size = (p.GetIndex() - size.GetIndex());
  }
  if(except.GetCount()) {       // If anyone added an exception throw this.
    throw except;
  }

}  
int
CReadOrder::Read(void* pBuf)
{
  ModuleIterator pM = readerbegin();
  short*         p((short*)pBuf);
  short*         pwords((short*)pBuf);
  int            nRead(0);
  CReadException except;
  

  if(m_fPacketize) {
    p++;
    *p++ = m_nPacketId;
    nRead = 2;                  // Packet overhead is 2 words.
  }

  try {
    while(pM != readerend()) {
      CReadableObject* pModule = *pM;
      int nThisRead            = pModule->Read(p);
      nRead                   += nThisRead;
      p                       += nThisRead;
      pM++;
    }
  }
  catch (CReadException e) {
    except.Add(e.GetString(), e.GetCount());
  }
  catch (string msg) {
    except.Add(msg, nRead);
  }
  catch (...) {
    except.Add(string("Unanticipated exception"),
                      nRead);
  }

  if(m_fPacketize) {
    *pwords = nRead;            // Fill in size.
  }
  if(except.GetCount()) {
    throw except;
  }
  return nRead;

}
void 
CReadOrder::Clear()  
{ 
   ModuleClear clear;
   for_each(readerbegin(), readerend(), clear);
}  

int 
CReadOrder::readersize()  
{ 
   return m_ReadoutList.size();
}  

CReadOrder::ModuleIterator 
CReadOrder::readerbegin()  
{ 
   return m_ReadoutList.begin();
}  

CReadOrder::ModuleIterator 
CReadOrder::readerend()  
{ 
   return m_ReadoutList.end();
}
CReadOrder::ModuleIterator
CReadOrder::readerfind(const string& rName)
{
   CompareName cname(rName);
   return find_if(readerbegin(), readerend(), cname);
}

int
CReadOrder::operator()(CTCLInterpreter& rInterp,
                       CTCLResult&        rResult,
                       int nargc, char** pargv)
{
  int     nArgc(nargc);         // Use copies so the originals can be
  char**  pArgv(pargv);         // passed unmodified to base class operator()
  int nStatus = TCL_OK;
   
   // Skip the command keyword:
   
   nArgc--;
   pArgv++;
   
   // All commands require at least one additional parameter:
   
   if(nArgc < 1) {
      nStatus = TCL_ERROR;
      rResult = Usage();
   }
   else {
     // Dispatch to appropriate function:
     
     string SubCommand(*pArgv);
     if(SubCommand == string("add")) {
       nStatus = AddCommand(rInterp, rResult, nArgc, pArgv);
     }
     else if (SubCommand == string("list")) {
       nStatus = ListCommand(rInterp, rResult, nArgc, pArgv);
     }
     else if (SubCommand == string("remove")) {
       nStatus = RemoveCommand(rInterp, rResult, nArgc, pArgv);
     }
     else {
       // Could be processed by base classes:
       
       nStatus  = CReadableObject::operator()(rInterp, rResult,
                                              nargc, pargv);
       if(nStatus != TCL_OK) {
         rResult += Usage();    // Append our usage.
       }
     }
   }
   return nStatus;
}
   
int 
CReadOrder::AddCommand(CTCLInterpreter& rInterp,
                           CTCLResult&       rResult,
                           int nArgc, char** pArgv)
{
   int nStatus = TCL_OK;
   
   // Skip command keyword:
   
   nArgc--;
   pArgv++;
   
   // Build vectors of good and bad modules (those that
   // exist and those that don't.
   //
   vector<CReadableObject*> good;
   vector<string> bad;
   
   while (nArgc) {
      CDigitizerDictionary::ModuleIterator p = m_pModules->DigitizerFind(string(*pArgv));
      if(p == m_pModules->DigitizerEnd()) {
         nStatus = TCL_ERROR;
         bad.push_back(string(*pArgv));
      }
      else {
         good.push_back((p->second));
      }
      nArgc--;
      pArgv++;
   }
   if(nStatus == TCL_OK) {      // All modules are ok.
      for(int i =0; i < good.size(); i++) {
         Add(good[i]);
      }
   }
   else {                      // Some modules don't exist.
      rResult = "The following modules do not exist: ";
      for(int i =0; i < bad.size(); i++) {
         rResult += bad[i];
         rResult += " ";
      }
      rResult += "\nNo modules added to readout";
   }

   return nStatus;
}
int 
CReadOrder::RemoveCommand(CTCLInterpreter& rInterp,
                             CTCLResult&       rResult,
                             int nArgc, char** pArgv)
{
   int nStatus = TCL_OK;
   
   // Skip past the subcommand parameter:
   
   nArgc--;
   pArgv++;
   
   // The next parameter is a single module that will be deleted:
   
   if(nArgc != 1) {
      nStatus = TCL_ERROR;
      rResult = "Too many parameters after module remove\n";
      rResult += Usage();
   }
   else {
        string Module(*pArgv);
        ModuleIterator p = readerfind(Module);
        if(p != readerend()) {
           Remove(p);
        }
        else {
           nStatus = TCL_ERROR;
           rResult = "Module ";
           rResult += Module;
           rResult += " not in the readout list";
        }
   }
   return nStatus;
}
int 
CReadOrder::ListCommand(CTCLInterpreter& rInterp,
                           CTCLResult&       rResult,
                           int nArgc, char** pArgv)
{
   int nStatus = TCL_OK;
   
   // Skip the subcommand parameter:
   
   nArgc--;
   pArgv++;
   
   // Validate the command parameter count and figure out 
   // the match pattern.
   
   if(nArgc > 1) {
      nStatus = TCL_ERROR;
      rResult   = "Extra parameters following 'readout list' command\n";
      rResult += Usage();
   }
   else {
      string pattern("*");
      if(nArgc) {
         pattern = *pArgv;
      }
      Lister visitor(rResult, pattern);
      for_each(readerbegin(), readerend(), visitor);
     
   }
   return nStatus;
}
string
CReadOrder::Usage()
{

  string   result;
  string  cmd = getCommandName();
  result      = CReadableObject::Usage(); // Base class usage too!!
  result     +="\t";
  result     +=  cmd;
  result     += " add module1 ?module2...?\n";
  result     +="\t";
  result     += cmd;
  result     += " list ?glob-pattern?\n";
  result     +="\t";
  result     += cmd;
  result     += " remove module\n";   

   return result;
}
void
CReadOrder::OnDelete()
{
  ModuleIterator p = readerbegin();
  for(; p != readerend(); p++) {
    (*p)->Unlink();             // They must be linked or they would not be in
  }                             // our module list! 
  // Empty the list.

  m_ReadoutList.erase(readerbegin(), readerend());

}
string
CReadOrder::getType() const
{
  return string("packet-container");
}

---