From 5ef3952a7657a35c5731a99814b5198827438054 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Fri, 30 Apr 2010 15:51:38 +0000
Subject: [PATCH] Added beginnings of spell checking support

---
 applications/present3D/CMakeLists.txt   |  2 +
 applications/present3D/SpellChecker.cpp | 91 +++++++++++++++++++++++++
 applications/present3D/SpellChecker.h   | 39 +++++++++++
 applications/present3D/present3D.cpp    | 11 ++-
 4 files changed, 142 insertions(+), 1 deletion(-)
 create mode 100644 applications/present3D/SpellChecker.cpp
 create mode 100644 applications/present3D/SpellChecker.h

diff --git a/applications/present3D/CMakeLists.txt b/applications/present3D/CMakeLists.txt
index c68b78d93..09da1b1d8 100644
--- a/applications/present3D/CMakeLists.txt
+++ b/applications/present3D/CMakeLists.txt
@@ -5,6 +5,7 @@ SET(TARGET_SRC
     present3D.cpp
     ReadShowFile.cpp
     ShowEventHandler.cpp
+    SpellChecker.cpp
 )
 
 SET(TARGET_H
@@ -13,6 +14,7 @@ SET(TARGET_H
     PointsEventHandler.h
     ReadShowFile.h
     ShowEventHandler.h
+    SpellChecker.h
 )
 
 IF (SDL_FOUND)
diff --git a/applications/present3D/SpellChecker.cpp b/applications/present3D/SpellChecker.cpp
new file mode 100644
index 000000000..97694af8a
--- /dev/null
+++ b/applications/present3D/SpellChecker.cpp
@@ -0,0 +1,91 @@
+/* -*-c++-*- Present3D - Copyright (C) 1999-2006 Robert Osfield
+ *
+ * This software is open source and may be redistributed and/or modified under
+ * the terms of the GNU General Public License (GPL) version 2.0.
+ * The full license is in LICENSE.txt file included with this distribution,.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * include LICENSE.txt for more details.
+*/
+
+#include <osgDB/FileNameUtils>
+#include <osgDB/FileUtils>
+
+#include <iostream>
+
+#include "SpellChecker.h"
+
+using namespace p3d;
+
+SpellChecker::SpellChecker()
+{
+}
+
+void SpellChecker::checkP3dXml(const std::string& filename) const
+{
+    std::string foundFileName = osgDB::findDataFile( filename );
+    if (foundFileName.empty()) return;
+
+    std::ifstream fin(foundFileName.c_str());
+
+    osgDB::XmlNode::Input input;
+    input.attach(fin);
+    input.readAllDataIntoBuffer();
+
+    osg::ref_ptr<osgDB::XmlNode> doc = new osgDB::XmlNode;
+    doc->read(input);
+
+    if (!doc) return;
+
+    checkXml(doc.get());
+}
+
+void SpellChecker::checkXml(osgDB::XmlNode* node) const
+{
+    if (node->name=="page") checkWords(node->contents);
+    else if (node->name=="paragraph") checkWords(node->contents);
+    else if (node->name=="bullet") checkWords(node->contents);
+
+    for(osgDB::XmlNode::Children::iterator itr = node->children.begin();
+        itr != node->children.end();
+        ++itr)
+    {
+        checkXml(itr->get());
+    }
+}
+
+void SpellChecker::checkWords(const std::string& words) const
+{
+    OSG_NOTICE<<"--"<<std::endl<<words<<std::endl;
+
+
+#if 0
+    const char alpha[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
+    std::string::size_type start = words.find_first_of(alpha);
+    while(start != std::string::npos)
+    {
+        std::string::size_type end = words.find_first_not_of(alpha, start+1);
+
+        std::string word = words.substr(start, end-start);
+        if (!isCorrect(word))
+        {
+            OSG_NOTICE<<"Error : "<<word<<std::endl;
+        }
+
+        start = (end!=std::string::npos) ? words.find_first_of(alpha, end+1) : std::string::npos;
+    }
+#endif
+}
+
+bool SpellChecker::isCorrect(const std::string& word) const
+{
+    OSG_NOTICE<<"SpellChecker::isCorrect("<<word<<")"<<std::endl;
+    return true;
+}
+
+SpellChecker::WordList SpellChecker::suggest(const std::string& word) const
+{
+    return WordList();
+}
diff --git a/applications/present3D/SpellChecker.h b/applications/present3D/SpellChecker.h
new file mode 100644
index 000000000..370d5c0b8
--- /dev/null
+++ b/applications/present3D/SpellChecker.h
@@ -0,0 +1,39 @@
+/* -*-c++-*- Present3D - Copyright (C) 1999-2006 Robert Osfield
+ *
+ * This software is open source and may be redistributed and/or modified under
+ * the terms of the GNU General Public License (GPL) version 2.0.
+ * The full license is in LICENSE.txt file included with this distribution,.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * include LICENSE.txt for more details.
+*/
+
+#ifndef SPELLCHCKER_H
+#define SPELLCHCKER_H
+
+#include <osgDB/XmlParser>
+
+namespace p3d
+{
+
+class SpellChecker
+{
+    public:
+
+        SpellChecker();
+
+        void checkP3dXml(const std::string& filename) const;
+        void checkXml(osgDB::XmlNode* xmlNode) const;
+        void checkWords(const std::string& words) const;
+
+        bool isCorrect(const std::string& word) const;
+
+        typedef std::list<std::string> WordList;
+        WordList suggest(const std::string& word) const;
+};
+
+}
+
+#endif
diff --git a/applications/present3D/present3D.cpp b/applications/present3D/present3D.cpp
index 29ccbca4b..fa051d439 100644
--- a/applications/present3D/present3D.cpp
+++ b/applications/present3D/present3D.cpp
@@ -44,7 +44,7 @@
 #include "PointsEventHandler.h"
 #include "Cluster.h"
 #include "ExportHTML.h"
-
+#include "SpellChecker.h"
 
 #include <sstream>
 #include <fstream>
@@ -428,6 +428,15 @@ int main( int argc, char **argv )
     
     while (arguments.read("--clear-color",clearColor[0],clearColor[1],clearColor[2],clearColor[3])) {}
 
+    std::string filename;
+    if (arguments.read("--spell-check",filename))
+    {
+        p3d::SpellChecker spellChecker;
+        spellChecker.checkP3dXml(filename);
+        return 1;
+    }
+
+
     // construct the viewer.
     osgViewer::Viewer viewer(arguments);