ENH: Add initial implementation of the list command

1 files changed, 359 insertions, 0 deletions

diff --git a/Source/cmListCommand.cxx b/Source/cmListCommand.cxx
new file mode 100644
index 0000000000..60cf9e3165
--- /dev/null
+++ b/Source/cmListCommand.cxx
@@ -0,0 +1,359 @@
+/*=========================================================================
+
+  Program:   CMake - Cross-Platform Makefile Generator
+  Module:    $RCSfile$
+  Language:  C++
+  Date:      $Date$
+  Version:   $Revision$
+
+  Copyright (c) 2002 Kitware, Inc., Insight Consortium.  All rights reserved.
+  See Copyright.txt or http://www.cmake.org/HTML/Copyright.html for details.
+
+     This software is distributed WITHOUT ANY WARRANTY; without even 
+     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
+     PURPOSE.  See the above copyright notices for more information.
+
+=========================================================================*/
+#include "cmListCommand.h"
+#include <cmsys/RegularExpression.hxx>
+#include <cmsys/SystemTools.hxx>
+
+#include <stdlib.h> // required for atoi
+#include <ctype.h>
+//----------------------------------------------------------------------------
+bool cmListCommand::InitialPass(std::vector<std::string> const& args)
+{
+  if(args.size() < 1)
+    {
+    this->SetError("must be called with at least one argument.");
+    return false;
+    }
+  
+  const std::string &subCommand = args[0];
+  if(subCommand == "LENGTH")
+    {
+    return this->HandleLengthCommand(args);
+    }
+  if(subCommand == "GET")
+    {
+    return this->HandleGetCommand(args);
+    }
+  if(subCommand == "SET")
+    {
+    return this->HandleSetCommand(args);
+    }
+  if(subCommand == "INSERT")
+    {
+    return this->HandleInsertCommand(args);
+    }
+  if(subCommand == "REMOVE")
+    {
+    return this->HandleRemoveCommand(args);
+    }
+  if(subCommand == "REMOVE_ITEM")
+    {
+    return this->HandleRemoveItemCommand(args);
+    }
+  
+  std::string e = "does not recognize sub-command "+subCommand;
+  this->SetError(e.c_str());
+  return false;
+}
+
+//----------------------------------------------------------------------------
+bool cmListCommand::GetListString(std::string& listString, const char* var)
+{
+  if ( !var )
+    {
+    return false;
+    }
+  // get the old value
+  const char* cacheValue
+    = m_Makefile->GetDefinition(var);
+  if(!cacheValue)
+    {
+    cmOStringStream str;
+    str << "cannot find variable: " << var;
+    this->SetError(str.str().c_str());
+    return false;
+    }
+  listString = cacheValue;
+  return true;
+}
+
+//----------------------------------------------------------------------------
+bool cmListCommand::GetList(std::vector<std::string>& list, const char* var)
+{
+  std::string listString;
+  if ( !this->GetListString(listString, var) )
+    {
+    return false;
+    }
+  // expand the variable
+  cmSystemTools::ExpandListArgument(listString, list);
+  return true;
+}
+
+//----------------------------------------------------------------------------
+bool cmListCommand::HandleLengthCommand(std::vector<std::string> const& args)
+{
+  if(args.size() != 3)
+    {
+    this->SetError("sub-command LENGTH requires two arguments.");
+    return false;
+    }
+
+  const std::string& listName = args[1];
+  const std::string& variableName = args[args.size() - 1];
+  std::vector<std::string> varArgsExpanded;
+  if ( !this->GetList(varArgsExpanded, listName.c_str()) )
+    {
+    return false;
+    }
+
+  size_t length = varArgsExpanded.size();
+  char buffer[1024];
+  sprintf(buffer, "%d", static_cast<int>(length));
+
+  m_Makefile->AddDefinition(variableName.c_str(), buffer);
+  return true;
+}
+
+//----------------------------------------------------------------------------
+bool cmListCommand::HandleGetCommand(std::vector<std::string> const& args)
+{
+  if(args.size() < 4)
+    {
+    this->SetError("sub-command GET requires at least three arguments.");
+    return false;
+    }
+
+  const std::string& listName = args[1];
+  const std::string& variableName = args[args.size() - 1];
+  // expand the variable
+  std::vector<std::string> varArgsExpanded;
+  if ( !this->GetList(varArgsExpanded, listName.c_str()) )
+    {
+    return false;
+    }
+
+  std::string value;
+  size_t cc;
+  for ( cc = 2; cc < args.size()-1; cc ++ )
+    {
+    int item = atoi(args[cc].c_str());
+    if (value.size())
+      {
+      value += ";";
+      }
+    int nitem = varArgsExpanded.size();
+    if ( item < 0 )
+      {
+      item = nitem + item;
+      }
+    if ( item < 0 || nitem <= item )
+      {
+      cmOStringStream str;
+      str << "index: " << item << " out of range (-" << varArgsExpanded.size() << ", " << varArgsExpanded.size()-1 << ")";
+      this->SetError(str.str().c_str());
+      return false;
+      }
+    value += varArgsExpanded[item];
+    }
+
+  m_Makefile->AddDefinition(variableName.c_str(), value.c_str());
+  return true;
+}
+
+//----------------------------------------------------------------------------
+bool cmListCommand::HandleSetCommand(std::vector<std::string> const& args)
+{
+  if(args.size() < 3)
+    {
+    this->SetError("sub-command SET requires at least two arguments.");
+    return false;
+    }
+
+  const std::string& listName = args[1];
+  // expand the variable
+  std::string listString;
+  if ( !this->GetListString(listString, listName.c_str()) )
+    {
+    return false;
+    }
+  size_t cc;
+  for ( cc = 2; cc < args.size(); ++ cc )
+    {
+    if ( listString.size() )
+      {
+      listString += ";";
+      }
+    listString += args[cc];
+    }
+
+  m_Makefile->AddDefinition(listName.c_str(), listString.c_str());
+  return true;
+}
+
+//----------------------------------------------------------------------------
+bool cmListCommand::HandleInsertCommand(std::vector<std::string> const& args)
+{
+  if(args.size() < 4)
+    {
+    this->SetError("sub-command INSERT requires at least three arguments.");
+    return false;
+    }
+
+  const std::string& listName = args[1];
+  // expand the variable
+  std::vector<std::string> varArgsExpanded;
+  if ( !this->GetList(varArgsExpanded, listName.c_str()) )
+    {
+    return false;
+    }
+
+  int item = atoi(args[2].c_str());
+
+  int nitem = varArgsExpanded.size();
+  if ( item < 0 )
+    {
+    item = nitem + item;
+    }
+  if ( item < 0 || nitem <= item )
+    {
+    cmOStringStream str;
+    str << "index: " << item << " out of range (-" << varArgsExpanded.size() << ", " << varArgsExpanded.size()-1 << ")";
+    this->SetError(str.str().c_str());
+    return false;
+    }
+  size_t cc;
+  size_t cnt = 0;
+  for ( cc = 3; cc < args.size(); ++ cc )
+    {
+    varArgsExpanded.insert(varArgsExpanded.begin()+item+cnt, args[cc]);
+    cnt ++;
+    }
+
+  std::string value;
+  for ( cc = 0; cc < varArgsExpanded.size(); cc ++ )
+    {
+    if (value.size())
+      {
+      value += ";";
+      }
+    value += varArgsExpanded[cc];
+    }
+
+  m_Makefile->AddDefinition(listName.c_str(), value.c_str());
+  return true;
+}
+
+//----------------------------------------------------------------------------
+bool cmListCommand::HandleRemoveCommand(std::vector<std::string> const& args)
+{
+  if(args.size() < 3)
+    {
+    this->SetError("sub-command REMOVE requires at least two arguments.");
+    return false;
+    }
+
+  const std::string& listName = args[1];
+  // expand the variable
+  std::vector<std::string> varArgsExpanded;
+  if ( !this->GetList(varArgsExpanded, listName.c_str()) )
+    {
+    return false;
+    }
+
+  size_t cc;
+  for ( cc = 2; cc < args.size(); ++ cc )
+    {
+    size_t kk = 0;
+    while ( kk < varArgsExpanded.size() )
+      {
+      if ( varArgsExpanded[kk] == args[cc] )
+        {
+        varArgsExpanded.erase(varArgsExpanded.begin()+kk);
+        }
+      kk ++;
+      }
+    }
+
+  std::string value;
+  for ( cc = 0; cc < varArgsExpanded.size(); cc ++ )
+    {
+    if (value.size())
+      {
+      value += ";";
+      }
+    value += varArgsExpanded[cc];
+    }
+
+  m_Makefile->AddDefinition(listName.c_str(), value.c_str());
+  return true;
+}
+
+//----------------------------------------------------------------------------
+bool cmListCommand::HandleRemoveItemCommand(std::vector<std::string> const& args)
+{
+  if(args.size() < 3)
+    {
+    this->SetError("sub-command REMOVE_ITEM requires at least two arguments.");
+    return false;
+    }
+
+  const std::string& listName = args[1];
+  // expand the variable
+  std::vector<std::string> varArgsExpanded;
+  if ( !this->GetList(varArgsExpanded, listName.c_str()) )
+    {
+    return false;
+    }
+
+  size_t cc;
+  std::vector<size_t> removed;
+  for ( cc = 2; cc < args.size(); ++ cc )
+    {
+    int item = atoi(args[cc].c_str());
+    int nitem = varArgsExpanded.size();
+    if ( item < 0 )
+      {
+      item = nitem + item;
+      }
+    if ( item < 0 || nitem <= item )
+      {
+      cmOStringStream str;
+      str << "index: " << item << " out of range (-" << varArgsExpanded.size() << ", " << varArgsExpanded.size()-1 << ")";
+      this->SetError(str.str().c_str());
+      return false;
+      }
+    removed.push_back(static_cast<size_t>(item));
+    }
+
+  std::string value;
+  for ( cc = 0; cc < varArgsExpanded.size(); ++ cc )
+    {
+    size_t kk;
+    bool found = false;
+    for ( kk = 0; kk < removed.size(); ++ kk )
+      {
+      if ( cc == removed[kk] )
+        {
+        found = true;
+        }
+      }
+
+    if ( !found )
+      {
+      if (value.size())
+        {
+        value += ";";
+        }
+      value += varArgsExpanded[cc];
+      }
+    }
+
+  m_Makefile->AddDefinition(listName.c_str(), value.c_str());
+  return true;
+}
+