Merge branch 'filter'

apps/opencs/CMakeLists.txt

@@ -107,10 +107,18 @@ opencs_units_noqt (model/settings
     settingsitem
     )
 
+opencs_units_noqt (model/filter
+    node unarynode narynode leafnode booleannode parser andnode ornode notnode textnode valuenode
+    )
+
 opencs_hdrs_noqt (model/filter
     filter
     )
 
+opencs_units (view/filter
+    filtercreator filterbox recordfilterbox editwidget
+    )
+
 set (OPENCS_US
     )
 

apps/opencs/model/filter/andnode.cpp

@@ -0,0 +1,20 @@
+
+#include "andnode.hpp"
+
+#include <sstream>
+
+CSMFilter::AndNode::AndNode (const std::vector<boost::shared_ptr<Node> >& nodes)
+: NAryNode (nodes, "and")
+{}
+
+bool CSMFilter::AndNode::test (const CSMWorld::IdTable& table, int row,
+    const std::map<int, int>& columns) const
+{
+    int size = getSize();
+
+    for (int i=0; i<size; ++i)
+        if (!(*this)[i].test (table, row, columns))
+            return false;
+
+    return true;
+}

apps/opencs/model/filter/andnode.hpp

@@ -0,0 +1,23 @@
+#ifndef CSM_FILTER_ANDNODE_H
+#define CSM_FILTER_ANDNODE_H
+
+#include "narynode.hpp"
+
+namespace CSMFilter
+{
+    class AndNode : public NAryNode
+    {
+            bool mAnd;
+
+        public:
+
+            AndNode (const std::vector<boost::shared_ptr<Node> >& nodes);
+
+            virtual bool test (const CSMWorld::IdTable& table, int row,
+                const std::map<int, int>& columns) const;
+            ///< \return Can the specified table row pass through to filter?
+            /// \param columns column ID to column index mapping
+    };
+}
+
+#endif

apps/opencs/model/filter/booleannode.cpp

@@ -0,0 +1,15 @@
+
+#include "booleannode.hpp"
+
+CSMFilter::BooleanNode::BooleanNode (bool true_) : mTrue (true_) {}
+
+bool CSMFilter::BooleanNode::test (const CSMWorld::IdTable& table, int row,
+    const std::map<int, int>& columns) const
+{
+    return mTrue;
+}
+
+std::string CSMFilter::BooleanNode::toString (bool numericColumns) const
+{
+    return mTrue ? "true" : "false";
+}

apps/opencs/model/filter/booleannode.hpp

@@ -0,0 +1,29 @@
+#ifndef CSM_FILTER_BOOLEANNODE_H
+#define CSM_FILTER_BOOLEANNODE_H
+
+#include "leafnode.hpp"
+
+namespace CSMFilter
+{
+    class BooleanNode : public LeafNode
+    {
+            bool mTrue;
+
+        public:
+
+            BooleanNode (bool true_);
+
+            virtual bool test (const CSMWorld::IdTable& table, int row,
+                const std::map<int, int>& columns) const;
+            ///< \return Can the specified table row pass through to filter?
+            /// \param columns column ID to column index mapping
+
+            virtual std::string toString (bool numericColumns) const;
+            ///< Return a string that represents this node.
+            ///
+            /// \param numericColumns Use numeric IDs instead of string to represent columns.
+
+    };
+}
+
+#endif

apps/opencs/model/filter/filter.hpp

@@ -11,15 +11,14 @@ namespace CSMFilter
     /// \brief Wrapper for Filter record
     struct Filter : public ESM::Filter
     {
-        enum scope
+        enum Scope
         {
-            Global = 0,
+            Scope_Project = 0, // per project
-            Local = 1,
+            Scope_Session = 1, // exists only for one editing session; not saved
-            Session = 2,
+            Scope_Content = 2 // embedded in the edited content file
-            Content = 3
         };
 
-        scope mScope;
+        Scope mScope;
     };
 }
 

apps/opencs/model/filter/leafnode.cpp

@@ -0,0 +1,8 @@
+
+#include "leafnode.hpp"
+
+std::vector<int> CSMFilter::LeafNode::getReferencedColumns() const
+{
+    return std::vector<int>();
+}
+

apps/opencs/model/filter/leafnode.hpp

@@ -0,0 +1,20 @@
+#ifndef CSM_FILTER_LEAFNODE_H
+#define CSM_FILTER_LEAFNODE_H
+
+#include <memory>
+
+#include "node.hpp"
+
+namespace CSMFilter
+{
+    class LeafNode : public Node
+    {
+        public:
+
+            virtual std::vector<int> getReferencedColumns() const;
+            ///< Return a list of the IDs of the columns referenced by this node. The column mapping
+            /// passed into test as columns must contain all columns listed here.
+    };
+}
+
+#endif

apps/opencs/model/filter/narynode.cpp

@@ -0,0 +1,60 @@
+
+#include "narynode.hpp"
+
+#include <sstream>
+
+CSMFilter::NAryNode::NAryNode (const std::vector<boost::shared_ptr<Node> >& nodes,
+    const std::string& name)
+: mNodes (nodes), mName (name)
+{}
+
+int CSMFilter::NAryNode::getSize() const
+{
+    return mNodes.size();
+}
+
+const CSMFilter::Node& CSMFilter::NAryNode::operator[] (int index) const
+{
+    return *mNodes.at (index);
+}
+
+std::vector<int> CSMFilter::NAryNode::getReferencedColumns() const
+{
+    std::vector<int> columns;
+
+    for (std::vector<boost::shared_ptr<Node> >::const_iterator iter (mNodes.begin());
+         iter!=mNodes.end(); ++iter)
+    {
+        std::vector<int> columns2 = (*iter)->getReferencedColumns();
+
+        columns.insert (columns.end(), columns2.begin(), columns2.end());
+    }
+
+    return columns;
+}
+
+std::string CSMFilter::NAryNode::toString (bool numericColumns) const
+{
+    std::ostringstream stream;
+
+    stream << mName << " (";
+
+    bool first = true;
+    int size = getSize();
+
+    for (int i=0; i<size; ++i)
+    {
+        if (first)
+            first = false;
+        else
+            stream << ", ";
+
+        stream << (*this)[i].toString (numericColumns);
+    }
+
+    stream << ")";
+
+    return stream.str();
+}
+
+

apps/opencs/model/filter/narynode.hpp

@@ -0,0 +1,37 @@
+#ifndef CSM_FILTER_NARYNODE_H
+#define CSM_FILTER_NARYNODE_H
+
+#include <vector>
+#include <string>
+
+#include <boost/shared_ptr.hpp>
+
+#include "node.hpp"
+
+namespace CSMFilter
+{
+    class NAryNode : public Node
+    {
+            std::vector<boost::shared_ptr<Node> > mNodes;
+            std::string mName;
+
+        public:
+
+            NAryNode (const std::vector<boost::shared_ptr<Node> >& nodes, const std::string& name);
+
+            int getSize() const;
+
+            const Node& operator[] (int index) const;
+
+            virtual std::vector<int> getReferencedColumns() const;
+            ///< Return a list of the IDs of the columns referenced by this node. The column mapping
+            /// passed into test as columns must contain all columns listed here.
+
+            virtual std::string toString (bool numericColumns) const;
+            ///< Return a string that represents this node.
+            ///
+            /// \param numericColumns Use numeric IDs instead of string to represent columns.
+    };
+}
+
+#endif

apps/opencs/model/filter/node.cpp

@@ -0,0 +1,6 @@
+
+#include "node.hpp"
+
+CSMFilter::Node::Node() {}
+
+CSMFilter::Node::~Node() {}

apps/opencs/model/filter/node.hpp

@@ -0,0 +1,53 @@
+#ifndef CSM_FILTER_NODE_H
+#define CSM_FILTER_NODE_H
+
+#include <string>
+#include <map>
+#include <vector>
+
+#include <boost/shared_ptr.hpp>
+
+#include <QMetaType>
+
+namespace CSMWorld
+{
+    class IdTable;
+}
+
+namespace CSMFilter
+{
+    /// \brief Root class for the filter node hierarchy
+    ///
+    /// \note When the function documentation for this class mentions "this node", this should be
+    /// interpreted as "the node and all its children".
+    class Node
+    {
+            // not implemented
+            Node (const Node&);
+            Node& operator= (const Node&);
+
+        public:
+
+            Node();
+
+            virtual ~Node();
+
+            virtual bool test (const CSMWorld::IdTable& table, int row,
+                const std::map<int, int>& columns) const = 0;
+            ///< \return Can the specified table row pass through to filter?
+            /// \param columns column ID to column index mapping
+
+            virtual std::vector<int> getReferencedColumns() const = 0;
+            ///< Return a list of the IDs of the columns referenced by this node. The column mapping
+            /// passed into test as columns must contain all columns listed here.
+
+            virtual std::string toString (bool numericColumns) const = 0;
+            ///< Return a string that represents this node.
+            ///
+            /// \param numericColumns Use numeric IDs instead of string to represent columns.
+    };
+}
+
+Q_DECLARE_METATYPE (boost::shared_ptr<CSMFilter::Node>)
+
+#endif

apps/opencs/model/filter/notnode.cpp

@@ -0,0 +1,10 @@
+
+#include "notnode.hpp"
+
+CSMFilter::NotNode::NotNode (boost::shared_ptr<Node> child) : UnaryNode (child, "not") {}
+
+bool CSMFilter::NotNode::test (const CSMWorld::IdTable& table, int row,
+    const std::map<int, int>& columns) const
+{
+    return !getChild().test (table, row, columns);
+}

apps/opencs/model/filter/notnode.hpp

@@ -0,0 +1,21 @@
+#ifndef CSM_FILTER_NOTNODE_H
+#define CSM_FILTER_NOTNODE_H
+
+#include "unarynode.hpp"
+
+namespace CSMFilter
+{
+    class NotNode : public UnaryNode
+    {
+        public:
+
+            NotNode (boost::shared_ptr<Node> child);
+
+            virtual bool test (const CSMWorld::IdTable& table, int row,
+                const std::map<int, int>& columns) const;
+            ///< \return Can the specified table row pass through to filter?
+            /// \param columns column ID to column index mapping
+    };
+}
+
+#endif

apps/opencs/model/filter/ornode.cpp

@@ -0,0 +1,20 @@
+
+#include "ornode.hpp"
+
+#include <sstream>
+
+CSMFilter::OrNode::OrNode (const std::vector<boost::shared_ptr<Node> >& nodes)
+: NAryNode (nodes, "or")
+{}
+
+bool CSMFilter::OrNode::test (const CSMWorld::IdTable& table, int row,
+    const std::map<int, int>& columns) const
+{
+    int size = getSize();
+
+    for (int i=0; i<size; ++i)
+        if ((*this)[i].test (table, row, columns))
+            return true;
+
+    return false;
+}

apps/opencs/model/filter/ornode.hpp

@@ -0,0 +1,23 @@
+#ifndef CSM_FILTER_ORNODE_H
+#define CSM_FILTER_ORNODE_H
+
+#include "narynode.hpp"
+
+namespace CSMFilter
+{
+    class OrNode : public NAryNode
+    {
+            bool mAnd;
+
+        public:
+
+            OrNode (const std::vector<boost::shared_ptr<Node> >& nodes);
+
+            virtual bool test (const CSMWorld::IdTable& table, int row,
+                const std::map<int, int>& columns) const;
+            ///< \return Can the specified table row pass through to filter?
+            /// \param columns column ID to column index mapping
+    };
+}
+
+#endif

apps/opencs/model/filter/parser.cpp

@@ -0,0 +1,544 @@
+
+#include "parser.hpp"
+
+#include <cctype>
+#include <stdexcept>
+#include <sstream>
+
+#include <components/misc/stringops.hpp>
+
+#include "../world/columns.hpp"
+
+#include "booleannode.hpp"
+#include "ornode.hpp"
+#include "andnode.hpp"
+#include "notnode.hpp"
+#include "textnode.hpp"
+#include "valuenode.hpp"
+
+namespace CSMFilter
+{
+    struct Token
+    {
+        enum Type
+        {
+            Type_EOS,
+            Type_None,
+            Type_String,
+            Type_Number,
+            Type_Open,
+            Type_Close,
+            Type_OpenSquare,
+            Type_CloseSquare,
+            Type_Comma,
+            Type_Keyword_True, ///< \attention Keyword enums must be arranged continuously.
+            Type_Keyword_False,
+            Type_Keyword_And,
+            Type_Keyword_Or,
+            Type_Keyword_Not,
+            Type_Keyword_Text,
+            Type_Keyword_Value
+        };
+
+        Type mType;
+        std::string mString;
+        double mNumber;
+
+        Token (Type type);
+
+        Token (const std::string& string);
+
+        Token (double number);
+
+        operator bool() const;
+    };
+
+    Token::Token (Type type) : mType (type) {}
+
+    Token::Token (const std::string& string) : mType (Type_String), mString (string) {}
+
+    Token::Token (double number) : mType (Type_Number), mNumber (number) {}
+
+    Token::operator bool() const
+    {
+        return mType!=Type_None;
+    }
+
+    bool operator== (const Token& left, const Token& right)
+    {
+        if (left.mType!=right.mType)
+            return false;
+
+        switch (left.mType)
+        {
+            case Token::Type_String: return left.mString==right.mString;
+            case Token::Type_Number: return left.mNumber==right.mNumber;
+
+            default: return true;
+        }
+    }
+}
+
+CSMFilter::Token CSMFilter::Parser::getStringToken()
+{
+    std::string string;
+
+    int size = static_cast<int> (mInput.size());
+
+    for (; mIndex<size; ++mIndex)
+    {
+        char c = mInput[mIndex];
+
+        if (std::isalpha (c) || c=='_' || (!string.empty() && std::isdigit (c)) || c=='"' ||
+            (!string.empty() && string[0]=='"'))
+            string += c;
+        else
+            break;
+
+        if (c=='"' && string.size()>1)
+        {
+            ++mIndex;
+            break;
+        }
+    };
+
+    if (!string.empty())
+    {
+        if (string[0]=='"' && (string[string.size()-1]!='"' || string.size()<2) )
+        {
+            error();
+            return Token (Token::Type_None);
+        }
+
+        if (string[0]!='"' && string[string.size()-1]=='"')
+        {
+            error();
+            return Token (Token::Type_None);
+        }
+
+        if (string[0]=='"')
+            string = string.substr (1, string.size()-2);
+    }
+
+    return checkKeywords (string);
+}
+
+CSMFilter::Token CSMFilter::Parser::getNumberToken()
+{
+    std::string string;
+
+    int size = static_cast<int> (mInput.size());
+
+    bool hasDecimalPoint = false;
+    bool hasDigit = false;
+
+    for (; mIndex<size; ++mIndex)
+    {
+        char c = mInput[mIndex];
+
+        if (std::isdigit (c))
+        {
+            string += c;
+            hasDigit = true;
+        }
+        else if (c=='.' && !hasDecimalPoint)
+        {
+            string += c;
+            hasDecimalPoint = true;
+        }
+        else if (string.empty() && c=='-')
+            string += c;
+        else
+            break;
+    }
+
+    if (!hasDigit)
+    {
+        error();
+        return Token (Token::Type_None);
+    }
+
+    float value;
+    std::istringstream stream (string.c_str());
+    stream >> value;
+
+    return value;
+}
+
+CSMFilter::Token CSMFilter::Parser::checkKeywords (const Token& token)
+{
+    static const char *sKeywords[] =
+    {
+        "true", "false",
+        "and", "or", "not",
+        "text", "value",
+        0
+    };
+
+    std::string string = Misc::StringUtils::lowerCase (token.mString);
+
+    for (int i=0; sKeywords[i]; ++i)
+        if (sKeywords[i]==string)
+            return Token (static_cast<Token::Type> (i+Token::Type_Keyword_True));
+
+    return token;
+}
+
+CSMFilter::Token CSMFilter::Parser::getNextToken()
+{
+    int size = static_cast<int> (mInput.size());
+
+    char c = 0;
+
+    for (; mIndex<size; ++mIndex)
+    {
+        c = mInput[mIndex];
+
+        if (c!=' ')
+            break;
+    }
+
+    if (mIndex>=size)
+        return Token (Token::Type_EOS);
+
+    switch (c)
+    {
+        case '(': ++mIndex; return Token (Token::Type_Open);
+        case ')': ++mIndex; return Token (Token::Type_Close);
+        case '[': ++mIndex; return Token (Token::Type_OpenSquare);
+        case ']': ++mIndex; return Token (Token::Type_CloseSquare);
+        case ',': ++mIndex; return Token (Token::Type_Comma);
+    }
+
+    if (c=='"' || c=='_' || std::isalpha (c))
+        return getStringToken();
+
+    if (c=='-' || c=='.' || std::isdigit (c))
+        return getNumberToken();
+
+    error();
+    return Token (Token::Type_None);
+}
+
+boost::shared_ptr<CSMFilter::Node> CSMFilter::Parser::parseImp (bool allowEmpty)
+{
+    if (Token token = getNextToken())
+    {
+        switch (token.mType)
+        {
+            case Token::Type_Keyword_True:
+
+                return boost::shared_ptr<CSMFilter::Node> (new BooleanNode (true));
+
+            case Token::Type_Keyword_False:
+
+                return boost::shared_ptr<CSMFilter::Node> (new BooleanNode (false));
+
+            case Token::Type_Keyword_And:
+            case Token::Type_Keyword_Or:
+
+                return parseNAry (token);
+
+            case Token::Type_Keyword_Not:
+            {
+                boost::shared_ptr<CSMFilter::Node> node = parseImp();
+
+                if (mError)
+                    return boost::shared_ptr<Node>();
+
+                return boost::shared_ptr<CSMFilter::Node> (new NotNode (node));
+            }
+
+            case Token::Type_Keyword_Text:
+
+                return parseText();
+
+            case Token::Type_Keyword_Value:
+
+                return parseValue();
+
+            case Token::Type_EOS:
+
+                if (!allowEmpty)
+                    error();
+
+                return boost::shared_ptr<Node>();
+
+            default:
+
+                error();
+        }
+    }
+
+    return boost::shared_ptr<Node>();
+}
+
+boost::shared_ptr<CSMFilter::Node> CSMFilter::Parser::parseNAry (const Token& keyword)
+{
+    std::vector<boost::shared_ptr<Node> > nodes;
+
+    Token token = getNextToken();
+
+    if (token.mType!=Token::Type_Open)
+    {
+        error();
+        return boost::shared_ptr<Node>();
+    }
+
+    for (;;)
+    {
+        boost::shared_ptr<Node> node = parseImp();
+
+        if (mError)
+            return boost::shared_ptr<Node>();
+
+        nodes.push_back (node);
+
+        Token token = getNextToken();
+
+        if (!token || (token.mType!=Token::Type_Close && token.mType!=Token::Type_Comma))
+        {
+            error();
+            return boost::shared_ptr<Node>();
+        }
+
+        if (token.mType==Token::Type_Close)
+            break;
+    }
+
+    if (nodes.empty())
+    {
+        error();
+        return boost::shared_ptr<Node>();
+    }
+
+    switch (keyword.mType)
+    {
+        case Token::Type_Keyword_And: return boost::shared_ptr<CSMFilter::Node> (new AndNode (nodes));
+        case Token::Type_Keyword_Or: return boost::shared_ptr<CSMFilter::Node> (new OrNode (nodes));
+        default: error(); return boost::shared_ptr<Node>();
+    }
+}
+
+boost::shared_ptr<CSMFilter::Node> CSMFilter::Parser::parseText()
+{
+    Token token = getNextToken();
+
+    if (token.mType!=Token::Type_Open)
+    {
+        error();
+        return boost::shared_ptr<Node>();
+    }
+
+    token = getNextToken();
+
+    if (!token)
+        return boost::shared_ptr<Node>();
+
+    // parse column ID
+    int columnId = -1;
+
+    if (token.mType==Token::Type_Number)
+    {
+        if (static_cast<int> (token.mNumber)==token.mNumber)
+            columnId = static_cast<int> (token.mNumber);
+    }
+    else if (token.mType==Token::Type_String)
+    {
+        columnId = CSMWorld::Columns::getId (token.mString);
+    }
+
+    if (columnId<0)
+    {
+        error();
+        return boost::shared_ptr<Node>();
+    }
+
+    token = getNextToken();
+
+    if (token.mType!=Token::Type_Comma)
+    {
+        error();
+        return boost::shared_ptr<Node>();
+    }
+
+    // parse text pattern
+    token = getNextToken();
+
+    if (token.mType!=Token::Type_String)
+    {
+        error();
+        return boost::shared_ptr<Node>();
+    }
+
+    std::string text = token.mString;
+
+    token = getNextToken();
+
+    if (token.mType!=Token::Type_Close)
+    {
+        error();
+        return boost::shared_ptr<Node>();
+    }
+
+    return boost::shared_ptr<Node> (new TextNode (columnId, text));
+}
+
+boost::shared_ptr<CSMFilter::Node> CSMFilter::Parser::parseValue()
+{
+    Token token = getNextToken();
+
+    if (token.mType!=Token::Type_Open)
+    {
+        error();
+        return boost::shared_ptr<Node>();
+    }
+
+    token = getNextToken();
+
+    if (!token)
+        return boost::shared_ptr<Node>();
+
+    // parse column ID
+    int columnId = -1;
+
+    if (token.mType==Token::Type_Number)
+    {
+        if (static_cast<int> (token.mNumber)==token.mNumber)
+            columnId = static_cast<int> (token.mNumber);
+    }
+    else if (token.mType==Token::Type_String)
+    {
+        columnId = CSMWorld::Columns::getId (token.mString);
+    }
+
+    if (columnId<0)
+    {
+        error();
+        return boost::shared_ptr<Node>();
+    }
+
+    token = getNextToken();
+
+    if (token.mType!=Token::Type_Comma)
+    {
+        error();
+        return boost::shared_ptr<Node>();
+    }
+
+    // parse value
+    double lower = 0;
+    double upper = 0;
+    bool min = false;
+    bool max = false;
+
+    token = getNextToken();
+
+    if (token.mType==Token::Type_Number)
+    {
+        // single value
+        min = max = true;
+        lower = upper = token.mNumber;
+    }
+    else
+    {
+        // interval
+        if (token.mType==Token::Type_OpenSquare)
+            min = true;
+        else if (token.mType!=Token::Type_CloseSquare && token.mType!=Token::Type_Open)
+        {
+            error();
+            return boost::shared_ptr<Node>();
+        }
+
+        token = getNextToken();
+
+        if (token.mType!=Token::Type_Number)
+        {
+            error();
+            return boost::shared_ptr<Node>();
+        }
+
+        lower = token.mNumber;
+
+        token = getNextToken();
+
+        if (token.mType!=Token::Type_Comma)
+        {
+            error();
+            return boost::shared_ptr<Node>();
+        }
+
+        token = getNextToken();
+
+        if (token.mType!=Token::Type_Number)
+        {
+            error();
+            return boost::shared_ptr<Node>();
+        }
+
+        upper = token.mNumber;
+
+        token = getNextToken();
+
+        if (token.mType==Token::Type_CloseSquare)
+            max = true;
+        else if (token.mType!=Token::Type_OpenSquare && token.mType!=Token::Type_Close)
+        {
+            error();
+            return boost::shared_ptr<Node>();
+        }
+    }
+
+    token = getNextToken();
+
+    if (token.mType!=Token::Type_Close)
+    {
+        error();
+        return boost::shared_ptr<Node>();
+    }
+
+    return boost::shared_ptr<Node> (new ValueNode (columnId, lower, upper, min, max));
+}
+
+void CSMFilter::Parser::error()
+{
+    mError = true;
+}
+
+CSMFilter::Parser::Parser() : mIndex (0), mError (false) {}
+
+bool CSMFilter::Parser::parse (const std::string& filter)
+{
+    // reset
+    mFilter.reset();
+    mError = false;
+    mInput = filter;
+    mIndex = 0;
+
+    boost::shared_ptr<Node> node = parseImp (true);
+
+    if (mError)
+        return false;
+
+    if (getNextToken()!=Token (Token::Type_EOS))
+        return false;
+
+    if (node)
+        mFilter = node;
+    else
+    {
+        // Empty filter string equals to filter "true".
+        mFilter.reset (new BooleanNode (true));
+    }
+
+    return true;
+}
+
+boost::shared_ptr<CSMFilter::Node> CSMFilter::Parser::getFilter() const
+{
+    if (mError)
+        throw std::logic_error ("No filter available");
+
+    return mFilter;
+}

apps/opencs/model/filter/parser.hpp

@@ -0,0 +1,53 @@
+#ifndef CSM_FILTER_PARSER_H
+#define CSM_FILTER_PARSER_H
+
+#include <boost/shared_ptr.hpp>
+
+#include "node.hpp"
+
+namespace CSMFilter
+{
+    struct Token;
+
+    class Parser
+    {
+            boost::shared_ptr<Node> mFilter;
+            std::string mInput;
+            int mIndex;
+            bool mError;
+
+            Token getStringToken();
+
+            Token getNumberToken();
+
+            Token getNextToken();
+
+            Token checkKeywords (const Token& token);
+            ///< Turn string token into keyword token, if possible.
+
+            boost::shared_ptr<Node> parseImp (bool allowEmpty = false);
+            ///< Will return a null-pointer, if there is nothing more to parse.
+
+            boost::shared_ptr<Node> parseNAry (const Token& keyword);
+
+            boost::shared_ptr<Node> parseText();
+
+            boost::shared_ptr<Node> parseValue();
+
+            void error();
+
+        public:
+
+            Parser();
+
+            bool parse (const std::string& filter);
+            ///< Discards any previous calls to parse
+            ///
+            /// \return Success?
+
+            boost::shared_ptr<Node> getFilter() const;
+            ///< Throws an exception if the last call to parse did not return true.
+    };
+}
+
+#endif

apps/opencs/model/filter/textnode.cpp

@@ -0,0 +1,62 @@
+
+#include "textnode.hpp"
+
+#include <sstream>
+#include <stdexcept>
+
+#include <QRegExp>
+
+#include "../world/columns.hpp"
+#include "../world/idtable.hpp"
+
+CSMFilter::TextNode::TextNode (int columnId, const std::string& text)
+: mColumnId (columnId), mText (text)
+{}
+
+bool CSMFilter::TextNode::test (const CSMWorld::IdTable& table, int row,
+    const std::map<int, int>& columns) const
+{
+    const std::map<int, int>::const_iterator iter = columns.find (mColumnId);
+
+    if (iter==columns.end())
+        throw std::logic_error ("invalid column in text node test");
+
+    if (iter->second==-1)
+        return true;
+
+    QModelIndex index = table.index (row, iter->second);
+
+    QVariant data = table.data (index);
+
+    if (data.type()!=QVariant::String)
+        return false;
+
+    /// \todo make pattern syntax configurable
+    QRegExp regExp (QString::fromUtf8 (mText.c_str()), Qt::CaseInsensitive);
+
+    return regExp.exactMatch (data.toString());
+}
+
+std::vector<int> CSMFilter::TextNode::getReferencedColumns() const
+{
+    return std::vector<int> (1, mColumnId);
+}
+
+std::string CSMFilter::TextNode::toString (bool numericColumns) const
+{
+    std::ostringstream stream;
+
+    stream << "text (";
+
+    if (numericColumns)
+        stream << mColumnId;
+    else
+        stream
+            << "\""
+            << CSMWorld::Columns::getName (static_cast<CSMWorld::Columns::ColumnId> (mColumnId))
+            << "\"";
+
+    stream << ", \"" << mText << "\")";
+
+    return stream.str();
+}

apps/opencs/model/filter/textnode.hpp

@@ -0,0 +1,33 @@
+#ifndef CSM_FILTER_TEXTNODE_H
+#define CSM_FILTER_TEXTNODE_H
+
+#include "leafnode.hpp"
+
+namespace CSMFilter
+{
+    class TextNode : public LeafNode
+    {
+            int mColumnId;
+            std::string mText;
+
+        public:
+
+            TextNode (int columnId, const std::string& text);
+
+            virtual bool test (const CSMWorld::IdTable& table, int row,
+                const std::map<int, int>& columns) const;
+            ///< \return Can the specified table row pass through to filter?
+            /// \param columns column ID to column index mapping
+
+            virtual std::vector<int> getReferencedColumns() const;
+            ///< Return a list of the IDs of the columns referenced by this node. The column mapping
+            /// passed into test as columns must contain all columns listed here.
+
+            virtual std::string toString (bool numericColumns) const;
+            ///< Return a string that represents this node.
+            ///
+            /// \param numericColumns Use numeric IDs instead of string to represent columns.
+    };
+}
+
+#endif

apps/opencs/model/filter/unarynode.cpp

@@ -0,0 +1,26 @@
+
+#include "unarynode.hpp"
+
+CSMFilter::UnaryNode::UnaryNode (boost::shared_ptr<Node> child, const std::string& name)
+: mChild (child), mName (name)
+{}
+
+const CSMFilter::Node& CSMFilter::UnaryNode::getChild() const
+{
+    return *mChild;
+}
+
+CSMFilter::Node& CSMFilter::UnaryNode::getChild()
+{
+    return *mChild;
+}
+
+std::vector<int> CSMFilter::UnaryNode::getReferencedColumns() const
+{
+    return mChild->getReferencedColumns();
+}
+
+std::string CSMFilter::UnaryNode::toString (bool numericColumns) const
+{
+    return mName + " " + mChild->toString (numericColumns);
+}

apps/opencs/model/filter/unarynode.hpp

@@ -0,0 +1,34 @@
+#ifndef CSM_FILTER_UNARYNODE_H
+#define CSM_FILTER_UNARYNODE_H
+
+#include <boost/shared_ptr.hpp>
+
+#include "node.hpp"
+
+namespace CSMFilter
+{
+    class UnaryNode : public Node
+    {
+            boost::shared_ptr<Node> mChild;
+            std::string mName;
+
+        public:
+
+            UnaryNode (boost::shared_ptr<Node> child, const std::string& name);
+
+            const Node& getChild() const;
+
+            Node& getChild();
+
+            virtual std::vector<int> getReferencedColumns() const;
+            ///< Return a list of the IDs of the columns referenced by this node. The column mapping
+            /// passed into test as columns must contain all columns listed here.
+
+            virtual std::string toString (bool numericColumns) const;
+            ///< Return a string that represents this node.
+            ///
+            /// \param numericColumns Use numeric IDs instead of string to represent columns.
+    };
+}
+
+#endif

apps/opencs/model/filter/valuenode.cpp

@@ -0,0 +1,71 @@
+
+#include "valuenode.hpp"
+
+#include <sstream>
+#include <stdexcept>
+
+#include "../world/columns.hpp"
+#include "../world/idtable.hpp"
+
+CSMFilter::ValueNode::ValueNode (int columnId,
+    double lower, double upper, bool min, bool max)
+: mColumnId (columnId), mLower (lower), mUpper (upper), mMin (min), mMax (max)
+{}
+
+bool CSMFilter::ValueNode::test (const CSMWorld::IdTable& table, int row,
+    const std::map<int, int>& columns) const
+{
+    const std::map<int, int>::const_iterator iter = columns.find (mColumnId);
+
+    if (iter==columns.end())
+        throw std::logic_error ("invalid column in test value test");
+
+    if (iter->second==-1)
+        return true;
+
+    QModelIndex index = table.index (row, iter->second);
+
+    QVariant data = table.data (index);
+
+    if (data.type()!=QVariant::Double && data.type()!=QVariant::Bool && data.type()!=QVariant::Int &&
+        data.type()!=QVariant::UInt)
+        return false;
+
+    double value = data.toDouble();
+
+    if (mLower==mUpper && mMin && mMax)
+        return value==mLower;
+
+    return (mMin ? value>=mLower : value>mLower) && (mMax ? value<=mUpper : value<mUpper);
+}
+
+std::vector<int> CSMFilter::ValueNode::getReferencedColumns() const
+{
+    return std::vector<int> (1, mColumnId);
+}
+
+std::string CSMFilter::ValueNode::toString (bool numericColumns) const
+{
+    std::ostringstream stream;
+
+    stream << "value (";
+
+    if (numericColumns)
+        stream << mColumnId;
+    else
+        stream
+            << "\""
+            << CSMWorld::Columns::getName (static_cast<CSMWorld::Columns::ColumnId> (mColumnId))
+            << "\"";
+
+    stream << ", \"";
+
+    if (mLower==mUpper && mMin && mMax)
+        stream << mLower;
+    else
+        stream << (mMin ? "[" : "(") << mLower << ", " << mUpper << (mMax ? "]" : ")");
+
+    stream << ")";
+
+    return stream.str();
+}

apps/opencs/model/filter/valuenode.hpp

@@ -0,0 +1,37 @@
+#ifndef CSM_FILTER_VALUENODE_H
+#define CSM_FILTER_VALUENODE_H
+
+#include "leafnode.hpp"
+
+namespace CSMFilter
+{
+    class ValueNode : public LeafNode
+    {
+            int mColumnId;
+            std::string mText;
+            double mLower;
+            double mUpper;
+            bool mMin;
+            bool mMax;
+
+        public:
+
+            ValueNode (int columnId, double lower, double upper, bool min, bool max);
+
+            virtual bool test (const CSMWorld::IdTable& table, int row,
+                const std::map<int, int>& columns) const;
+            ///< \return Can the specified table row pass through to filter?
+            /// \param columns column ID to column index mapping
+
+            virtual std::vector<int> getReferencedColumns() const;
+            ///< Return a list of the IDs of the columns referenced by this node. The column mapping
+            /// passed into test as columns must contain all columns listed here.
+
+            virtual std::string toString (bool numericColumns) const;
+            ///< Return a string that represents this node.
+            ///
+            /// \param numericColumns Use numeric IDs instead of string to represent columns.
+    };
+}
+
+#endif

apps/opencs/model/world/data.cpp

@@ -150,6 +150,7 @@ CSMWorld::Data::Data() : mRefs (mCells)
 
     mFilters.addColumn (new StringIdColumn<CSMFilter::Filter>);
     mFilters.addColumn (new RecordStateColumn<CSMFilter::Filter>);
+    mFilters.addColumn (new DescriptionColumn<CSMFilter::Filter>);
 
     addModel (new IdTable (&mGlobals), UniversalId::Type_Globals, UniversalId::Type_Global);
     addModel (new IdTable (&mGmsts), UniversalId::Type_Gmsts, UniversalId::Type_Gmst);

apps/opencs/model/world/idtableproxymodel.cpp

@@ -1,8 +1,36 @@
 
 #include "idtableproxymodel.hpp"
 
+#include <vector>
+
 #include "idtable.hpp"
 
+void CSMWorld::IdTableProxyModel::updateColumnMap()
+{
+    mColumnMap.clear();
+
+    if (mFilter)
+    {
+        std::vector<int> columns = mFilter->getReferencedColumns();
+
+        const IdTable& table = dynamic_cast<const IdTable&> (*sourceModel());
+
+        for (std::vector<int>::const_iterator iter (columns.begin()); iter!=columns.end(); ++iter)
+            mColumnMap.insert (std::make_pair (*iter,
+                table.searchColumnIndex (static_cast<CSMWorld::Columns::ColumnId> (*iter))));
+    }
+}
+
+bool CSMWorld::IdTableProxyModel::filterAcceptsRow (int sourceRow, const QModelIndex& sourceParent)
+    const
+{
+    if (!mFilter)
+        return true;
+
+    return mFilter->test (
+        dynamic_cast<IdTable&> (*sourceModel()), sourceRow, mColumnMap);
+}
+
 CSMWorld::IdTableProxyModel::IdTableProxyModel (QObject *parent)
 : QSortFilterProxyModel (parent)
 {}
@@ -10,4 +38,11 @@ CSMWorld::IdTableProxyModel::IdTableProxyModel (QObject *parent)
 QModelIndex CSMWorld::IdTableProxyModel::getModelIndex (const std::string& id, int column) const
 {
     return mapFromSource (dynamic_cast<IdTable&> (*sourceModel()).getModelIndex (id, column));
+}
+
+void CSMWorld::IdTableProxyModel::setFilter (const boost::shared_ptr<CSMFilter::Node>& filter)
+{
+    mFilter = filter;
+    updateColumnMap();
+    invalidateFilter();
 }

apps/opencs/model/world/idtableproxymodel.hpp

@@ -1,9 +1,15 @@
 #ifndef CSM_WOLRD_IDTABLEPROXYMODEL_H
 #define CSM_WOLRD_IDTABLEPROXYMODEL_H
 
+#include <string>
+
+#include <boost/shared_ptr.hpp>
+
+#include <map>
+
 #include <QSortFilterProxyModel>
 
-#include <string>
+#include "../filter/node.hpp"
 
 namespace CSMWorld
 {
@@ -11,11 +17,22 @@ namespace CSMWorld
     {
             Q_OBJECT
 
+            boost::shared_ptr<CSMFilter::Node> mFilter;
+            std::map<int, int> mColumnMap; // column ID, column index in this model (or -1)
+
+        private:
+
+            void updateColumnMap();
+
+            bool filterAcceptsRow (int sourceRow, const QModelIndex& sourceParent) const;
+
         public:
 
             IdTableProxyModel (QObject *parent = 0);
 
             virtual QModelIndex getModelIndex (const std::string& id, int column) const;
+
+            void setFilter (const boost::shared_ptr<CSMFilter::Node>& filter);
     };
 }
 

apps/opencs/view/filter/editwidget.cpp

@@ -0,0 +1,26 @@
+
+#include "editwidget.hpp"
+
+CSVFilter::EditWidget::EditWidget (QWidget *parent)
+: QLineEdit (parent)
+{
+    mPalette = palette();
+    connect (this, SIGNAL (textChanged (const QString&)), this, SLOT (textChanged (const QString&)));
+}
+
+void CSVFilter::EditWidget::textChanged (const QString& text)
+{
+    if (mParser.parse (text.toUtf8().constData()))
+    {
+        setPalette (mPalette);
+        emit filterChanged (mParser.getFilter());
+    }
+    else
+    {
+        QPalette palette (mPalette);
+        palette.setColor (QPalette::Text, Qt::red);
+        setPalette (palette);
+
+        /// \todo improve error reporting; mark only the faulty part
+    }
+}

apps/opencs/view/filter/editwidget.hpp

@@ -0,0 +1,35 @@
+#ifndef CSV_FILTER_EDITWIDGET_H
+#define CSV_FILTER_EDITWIDGET_H
+
+#include <boost/shared_ptr.hpp>
+
+#include <QLineEdit>
+#include <QPalette>
+
+#include "../../model/filter/parser.hpp"
+#include "../../model/filter/node.hpp"
+
+namespace CSVFilter
+{
+    class EditWidget : public QLineEdit
+    {
+            Q_OBJECT
+
+            CSMFilter::Parser mParser;
+            QPalette mPalette;
+
+        public:
+
+            EditWidget (QWidget *parent = 0);
+
+        signals:
+
+            void filterChanged (boost::shared_ptr<CSMFilter::Node> filter);
+
+        private slots:
+
+            void textChanged (const QString& text);
+    };
+}
+
+#endif

apps/opencs/view/filter/filterbox.cpp

@@ -0,0 +1,24 @@
+
+#include "filterbox.hpp"
+
+#include <QHBoxLayout>
+
+#include "recordfilterbox.hpp"
+
+CSVFilter::FilterBox::FilterBox (QWidget *parent)
+: QWidget (parent)
+{
+    QHBoxLayout *layout = new QHBoxLayout (this);
+
+    layout->setContentsMargins (0, 0, 0, 0);
+
+    RecordFilterBox *recordFilterBox = new RecordFilterBox (this);
+
+    layout->addWidget (recordFilterBox);
+
+    setLayout (layout);
+
+    connect (recordFilterBox,
+        SIGNAL (filterChanged (boost::shared_ptr<CSMFilter::Node>)),
+        this, SIGNAL (recordFilterChanged (boost::shared_ptr<CSMFilter::Node>)));
+}

apps/opencs/view/filter/filterbox.hpp

@@ -0,0 +1,25 @@
+#ifndef CSV_FILTER_FILTERBOX_H
+#define CSV_FILTER_FILTERBOX_H
+
+#include <QWidget>
+
+#include "../../model/filter/node.hpp"
+
+namespace CSVFilter
+{
+    class FilterBox : public QWidget
+    {
+            Q_OBJECT
+
+        public:
+
+            FilterBox (QWidget *parent = 0);
+
+        signals:
+
+            void recordFilterChanged (boost::shared_ptr<CSMFilter::Node> filter);
+    };
+
+}
+
+#endif

apps/opencs/view/filter/filtercreator.cpp

@@ -0,0 +1,63 @@
+
+#include "filtercreator.hpp"
+
+#include <QComboBox>
+#include <QLabel>
+
+#include "../../model/filter/filter.hpp"
+
+std::string CSVFilter::FilterCreator::getNamespace() const
+{
+    switch (mScope->currentIndex())
+    {
+        case CSMFilter::Filter::Scope_Project: return "project::";
+        case CSMFilter::Filter::Scope_Session: return "session::";
+    }
+
+    return "";
+}
+
+void CSVFilter::FilterCreator::update()
+{
+    mNamespace->setText (QString::fromUtf8 (getNamespace().c_str()));
+    GenericCreator::update();
+}
+
+std::string CSVFilter::FilterCreator::getId() const
+{
+    return getNamespace() + GenericCreator::getId();
+}
+
+CSVFilter::FilterCreator::FilterCreator (CSMWorld::Data& data, QUndoStack& undoStack,
+    const CSMWorld::UniversalId& id)
+: GenericCreator (data, undoStack, id)
+{
+    mNamespace = new QLabel ("::", this);
+    insertAtBeginning (mNamespace, false);
+
+    mScope = new QComboBox (this);
+
+    mScope->addItem ("Project");
+    mScope->addItem ("Session");
+    /// \ŧodo re-enable for OpenMW 1.1
+    // mScope->addItem ("Content");
+
+    connect (mScope, SIGNAL (currentIndexChanged (int)), this, SLOT (setScope (int)));
+
+    insertAtBeginning (mScope, false);
+
+    QLabel *label = new QLabel ("Scope", this);
+    insertAtBeginning (label, false);
+
+    mScope->setCurrentIndex (1);
+}
+
+void CSVFilter::FilterCreator::reset()
+{
+    GenericCreator::reset();
+}
+
+void CSVFilter::FilterCreator::setScope (int index)
+{
+    update();
+}

apps/opencs/view/filter/filtercreator.hpp

@@ -0,0 +1,41 @@
+#ifndef CSV_FILTER_FILTERCREATOR_H
+#define CSV_FILTER_FILTERCREATOR_H
+
+class QComboBox;
+class QLabel;
+
+#include "../world/genericcreator.hpp"
+
+namespace CSVFilter
+{
+    class FilterCreator : public CSVWorld::GenericCreator
+    {
+            Q_OBJECT
+
+            QComboBox *mScope;
+            QLabel *mNamespace;
+
+        private:
+
+            std::string getNamespace() const;
+
+        protected:
+
+            void update();
+
+            virtual std::string getId() const;
+
+        public:
+
+            FilterCreator (CSMWorld::Data& data, QUndoStack& undoStack,
+                const CSMWorld::UniversalId& id);
+
+            virtual void reset();
+
+        private slots:
+
+            void setScope (int index);
+    };
+}
+
+#endif

apps/opencs/view/filter/recordfilterbox.cpp

@@ -0,0 +1,27 @@
+
+#include "recordfilterbox.hpp"
+
+#include <QHBoxLayout>
+#include <QLabel>
+
+#include "editwidget.hpp"
+
+CSVFilter::RecordFilterBox::RecordFilterBox (QWidget *parent)
+: QWidget (parent)
+{
+    QHBoxLayout *layout = new QHBoxLayout (this);
+
+    layout->setContentsMargins (0, 0, 0, 0);
+
+    layout->addWidget (new QLabel ("Record Filter", this));
+
+    EditWidget *editWidget = new EditWidget (this);
+
+    layout->addWidget (editWidget);
+
+    setLayout (layout);
+
+    connect (
+        editWidget, SIGNAL (filterChanged (boost::shared_ptr<CSMFilter::Node>)),
+        this, SIGNAL (filterChanged (boost::shared_ptr<CSMFilter::Node>)));
+}

apps/opencs/view/filter/recordfilterbox.hpp

@@ -0,0 +1,29 @@
+#ifndef CSV_FILTER_RECORDFILTERBOX_H
+#define CSV_FILTER_RECORDFILTERBOX_H
+
+#include <boost/shared_ptr.hpp>
+
+#include <QWidget>
+
+#include <QHBoxLayout>
+
+#include "../../model/filter/node.hpp"
+
+namespace CSVFilter
+{
+    class RecordFilterBox : public QWidget
+    {
+            Q_OBJECT
+
+        public:
+
+            RecordFilterBox (QWidget *parent = 0);
+
+        signals:
+
+            void filterChanged (boost::shared_ptr<CSMFilter::Node> filter);
+    };
+
+}
+
+#endif

apps/opencs/view/world/subviews.cpp

@@ -3,6 +3,8 @@
 
 #include "../doc/subviewfactoryimp.hpp"
 
+#include "../filter/filtercreator.hpp"
+
 #include "tablesubview.hpp"
 #include "dialoguesubview.hpp"
 #include "scriptsubview.hpp"
@@ -33,7 +35,6 @@ void CSVWorld::addSubViewFactories (CSVDoc::SubViewFactoryManager& manager)
         CSMWorld::UniversalId::Type_Regions,
         CSMWorld::UniversalId::Type_Birthsigns,
         CSMWorld::UniversalId::Type_Spells,
-        CSMWorld::UniversalId::Type_Filters,
 
         CSMWorld::UniversalId::Type_None // end marker
     };
@@ -56,4 +57,9 @@ void CSVWorld::addSubViewFactories (CSVDoc::SubViewFactoryManager& manager)
 
     // Other stuff (combined record tables)
     manager.add (CSMWorld::UniversalId::Type_RegionMap, new CSVDoc::SubViewFactory<RegionMapSubView>);
+
+    manager.add (CSMWorld::UniversalId::Type_Filters,
+        new CSVDoc::SubViewFactoryWithCreator<TableSubView,
+        CreatorFactory<CSVFilter::FilterCreator> >);
+
 }

apps/opencs/view/world/table.cpp

@@ -257,9 +257,9 @@ void CSVWorld::Table::tableSizeUpdate()
     int deleted = 0;
     int modified = 0;
 
-    if (mModel->columnCount()>0)
+    if (mProxyModel->columnCount()>0)
     {
-        int rows = mModel->rowCount();
+        int rows = mProxyModel->rowCount();
 
         for (int i=0; i<rows; ++i)
         {
@@ -292,4 +292,9 @@ void CSVWorld::Table::requestFocus (const std::string& id)
 
     if (index.isValid())
         scrollTo (index, QAbstractItemView::PositionAtTop);
+}
+
+void CSVWorld::Table::recordFilterChanged (boost::shared_ptr<CSMFilter::Node> filter)
+{
+    mProxyModel->setFilter (filter);
 }

apps/opencs/view/world/table.hpp

@@ -6,6 +6,8 @@
 
 #include <QTableView>
 
+#include "../../model/filter/node.hpp"
+
 class QUndoStack;
 class QAction;
 
@@ -85,6 +87,7 @@ namespace CSVWorld
 
             void requestFocus (const std::string& id);
 
+            void recordFilterChanged (boost::shared_ptr<CSMFilter::Node> filter);
     };
 }
 

apps/opencs/view/world/tablesubview.cpp

@@ -5,6 +5,8 @@
 
 #include "../../model/doc/document.hpp"
 
+#include "../filter/filterbox.hpp"
+
 #include "table.hpp"
 #include "tablebottombox.hpp"
 #include "creator.hpp"
@@ -23,6 +25,10 @@ CSVWorld::TableSubView::TableSubView (const CSMWorld::UniversalId& id, CSMDoc::D
     layout->insertWidget (0, mTable =
         new Table (id, document.getData(), document.getUndoStack(), mBottom->canCreateAndDelete()), 2);
 
+    CSVFilter::FilterBox *filterBox = new CSVFilter::FilterBox (this);
+
+    layout->insertWidget (0, filterBox);
+
     QWidget *widget = new QWidget;
 
     widget->setLayout (layout);
@@ -44,6 +50,10 @@ CSVWorld::TableSubView::TableSubView (const CSMWorld::UniversalId& id, CSMDoc::D
 
     connect (mBottom, SIGNAL (requestFocus (const std::string&)),
         mTable, SLOT (requestFocus (const std::string&)));
+
+    connect (filterBox,
+        SIGNAL (recordFilterChanged (boost::shared_ptr<CSMFilter::Node>)),
+        mTable, SLOT (recordFilterChanged (boost::shared_ptr<CSMFilter::Node>)));
 }
 
 void CSVWorld::TableSubView::setEditLock (bool locked)

components/esm/filter.cpp

@@ -7,14 +7,17 @@
 void ESM::Filter::load (ESMReader& esm)
 {
     mFilter = esm.getHNString ("FILT");
+    mDescription = esm.getHNString ("DESC");
 }
 
 void ESM::Filter::save (ESMWriter& esm)
 {
     esm.writeHNCString ("FILT", mFilter);
+    esm.writeHNCString ("DESC", mDescription);
 }
 
 void ESM::Filter::blank()
 {
     mFilter.clear();
+    mDescription.clear();
 }

components/esm/filter.hpp

@@ -12,6 +12,8 @@ namespace ESM
     {
         std::string mId;
 
+        std::string mDescription;
+
         std::string mFilter;
 
         void load (ESMReader& esm);