ENH: Added SOURCE_GROUP command and corresponding support code. This command allows CMakeLists files to specify how sources are organized into groups in the generated DSP files and makefiles.

Source/cmSourceGroup.cxx

@@ -0,0 +1,87 @@
+/*=========================================================================
+
+  Program:   Insight Segmentation & Registration Toolkit
+  Module:    $RCSfile$
+  Language:  C++
+  Date:      $Date$
+  Version:   $Revision$
+
+
+  Copyright (c) 2000 National Library of Medicine
+  All rights reserved.
+
+  See COPYRIGHT.txt for copyright details.
+
+=========================================================================*/
+#include "cmSourceGroup.h"
+
+
+/**
+ * The constructor initializes the group's regular expression.
+ */
+cmSourceGroup::cmSourceGroup(const char* name, const char* regex):
+  m_Name(name),
+  m_GroupRegex(regex)
+{
+}
+
+
+/**
+ * Copy constructor.
+ */
+cmSourceGroup::cmSourceGroup(const cmSourceGroup& r):
+  m_Name(r.m_Name),
+  m_GroupRegex(r.m_GroupRegex),
+  m_Sources(r.m_Sources),
+  m_CustomCommands(r.m_CustomCommands)
+{
+}
+
+
+/**
+ * Returns whether the given name matches the group's regular expression.
+ */
+bool cmSourceGroup::Matches(const char* name)
+{
+  return m_GroupRegex.find(name);
+}
+
+
+/**
+ * Add a source and corresponding custom command to the group.  If the
+ * source already exists, the command will be added to its set of commands.
+ * If the command also already exists, the given dependencies and outputs
+ * are added to it.
+ */
+void cmSourceGroup::AddCustomCommand(const char* source,
+                                     const char* command,
+                                     const std::vector<std::string>& depends,
+                                     const std::vector<std::string>& outputs) 
+{
+  CustomCommands::iterator s = m_CustomCommands.find(source);
+  if(s == m_CustomCommands.end())
+    {
+    // The source was not found.  Add it with this command.
+    m_CustomCommands[source][command].m_Depends.insert(depends.begin(),
+                                                       depends.end());
+    m_CustomCommands[source][command].m_Outputs.insert(outputs.begin(),
+                                                       outputs.end());
+    return;
+    }
+  
+  // The source already exists.  See if the command exists.
+  Commands& commands = s->second;
+  Commands::iterator c = commands.find(command);
+  if(c == commands.end())
+    {
+    // The command did not exist.  Add it.
+    commands[command].m_Depends.insert(depends.begin(), depends.end());
+    commands[command].m_Outputs.insert(outputs.begin(), outputs.end());
+    return;
+    }
+  
+  // The command already exists for this source.  Merge the sets.
+  CommandFiles& commandFiles = c->second;
+  commandFiles.m_Depends.insert(depends.begin(), depends.end());
+  commandFiles.m_Outputs.insert(outputs.begin(), outputs.end());
+}