prepare for new metadata formatter implementation

git-svn-id: http://svn.code.sf.net/p/qmmp-dev/code/trunk/qmmp@4700 90c681e8-e032-0410-971d-27865f9a5e38

4 files changed, 319 insertions, 2 deletions

diff --git a/src/qmmp/qmmp.h b/src/qmmp/qmmp.h
index a079e2a02..6d3e63f03 100644
--- a/src/qmmp/qmmp.h
+++ b/src/qmmp/qmmp.h
@@ -53,6 +53,7 @@ public:
      */
     enum MetaData
     {
+        UNKNOWN = -1,
         TITLE = 0, /*!< Title */
         ARTIST,    /*!< Artist  */
         ALBUMARTIST,/*!< Album artist  */
diff --git a/src/qmmpui/metadataformatter2.cpp b/src/qmmpui/metadataformatter2.cpp
new file mode 100644
index 000000000..c59151060
--- /dev/null
+++ b/src/qmmpui/metadataformatter2.cpp
@@ -0,0 +1,209 @@
+/***************************************************************************
+ *   Copyright (C) 2009-2014 by Ilya Kotov                                 *
+ *   forkotov02@hotmail.ru                                                 *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program 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         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
+ ***************************************************************************/
+
+
+/*
+Syntax:
+%p - artist,
+%a - album,
+%aa - album artist,
+%t - title,
+%n - track number,
+%NN - 2-digit track number,
+%g - genre,
+%c - comment,
+%C - composer,
+%D - disc number,
+%f - file name,
+%F - full path,
+%y - year,
+%l - duration,
+%if(A,B,C) or %if(A&B&C,D,E) - condition.
+*/
+
+#include <QStringList>
+#include <QUrl>
+#include "metadataformatter2.h"
+
+MetaDataFormatter2::MetaDataFormatter2(const QString &format)
+{
+    m_format = format;
+    //compile("%p - %a");
+}
+
+QString MetaDataFormatter2::parse(const PlayListTrack *item)
+{
+    return parse(*item, item->length());
+}
+
+QString MetaDataFormatter2::parse(const QMap<Qmmp::MetaData, QString> &metaData, qint64 length)
+{
+    /*QString title = m_format;
+    title.replace("\\(", "%28");
+    title.replace("\\)", "%29");
+    title.replace(")", "%)");
+    title.replace("&", "%&");
+    title.replace(",", "%,");
+    title.replace("%p", metaData[Qmmp::ARTIST]);
+    title.replace("%aa", metaData[Qmmp::ALBUMARTIST]);
+    title.replace("%a", metaData[Qmmp::ALBUM]);
+    title.replace("%t", metaData[Qmmp::TITLE]);
+    title.replace("%n", metaData[Qmmp::TRACK]);
+    title.replace("%NN", QString("%1").arg(metaData[Qmmp::TRACK],2,'0'));
+    title.replace("%g", metaData[Qmmp::GENRE]);
+    title.replace("%c", metaData[Qmmp::COMMENT]);
+    title.replace("%C", metaData[Qmmp::COMPOSER]);
+    title.replace("%D", metaData[Qmmp::DISCNUMBER]);
+    title.replace("%f", metaData[Qmmp::URL].section('/',-1));
+    title.replace("%F", metaData[Qmmp::URL]);
+    title.replace("%y", metaData[Qmmp::YEAR]);
+    if(title.contains("l"))
+        title.replace("%l",formatLength(length));
+    if(title.contains("%if"))
+        title = processIfKeyWord(title);
+    title.replace("%28", "(");
+    title.replace("%29", ")");
+    return title.trimmed();*/
+    return QString();
+}
+
+QString MetaDataFormatter2::formatLength(qint64 length) const
+{
+    if(length <= 0)
+        return QString();
+    QString str;
+    if(length >= 3600)
+        str = QString("%1:%2").arg(length/3600).arg(length%3600/60, 2, 10, QChar('0'));
+    else
+        str = QString("%1").arg(length%3600/60);
+    str += QString(":%1").arg(length%60, 2, 10, QChar('0'));
+    return str;
+}
+
+bool MetaDataFormatter2::processKey(QList<Node> *nodes, QString::const_iterator i, QString::const_iterator end)
+{
+    QHash<QString, Qmmp::MetaData> key_map;
+    key_map.insert("p", Qmmp::ARTIST);
+    key_map.insert("aa", Qmmp::ALBUMARTIST);
+    key_map.insert("a", Qmmp::ALBUM);
+    key_map.insert("t", Qmmp::TITLE);
+    key_map.insert("n", Qmmp::TRACK);
+    key_map.insert("g", Qmmp::GENRE);
+    key_map.insert("c", Qmmp::COMMENT);
+    key_map.insert("C", Qmmp::COMPOSER);
+    key_map.insert("D", Qmmp::DISCNUMBER);
+    key_map.insert("F", Qmmp::URL);
+    key_map.insert("y", Qmmp::YEAR);
+
+    QString token_name = (*i); //2 symbols
+    i++; //TODO check end
+    token_name.append(*i);
+
+    Qmmp::MetaData key = key_map.value(token_name, Qmmp::UNKNOWN);
+
+    if(key == Qmmp::UNKNOWN)
+    {
+        i--;
+        token_name = (*i); //1 symbol
+        key = key_map.value(token_name, Qmmp::UNKNOWN);
+    }
+
+    if(key != Qmmp::UNKNOWN)
+    {
+        Node node;
+        node.command = Node::PRINT_TEXT;
+        Param param;
+        param.type = Param::KEY;
+        param.key = key;
+        node.params.append(param);
+        nodes->append(node);
+        return true;
+    }
+    return false;
+}
+
+void MetaDataFormatter2::processText(QList<MetaDataFormatter2::Node> *nodes, QString::const_iterator i, QString::const_iterator end)
+{
+    Node node;
+    node.command = Node::PRINT_TEXT;
+    Param param;
+    param.type = Param::TEXT;
+    node.params.append(param);
+
+    while (i != end)
+    {
+        node.params[0].text.append(*i);
+        i++;
+        if((*i) == QChar('%'))
+        {
+            i--;
+            nodes->append(node);
+            return;
+        }
+    }
+    nodes->append(node);
+}
+
+void MetaDataFormatter2::compile(const QString &format)
+{
+    QString::const_iterator i = format.constBegin();
+
+    while (i != format.constEnd())
+    {
+        i++;
+        if((*i) == QChar('%'))
+        {
+            i++;
+            if(processKey(&m_nodes, i, format.constEnd()))
+            {
+                continue;
+            }
+        }
+        else
+        {
+            processText(&m_nodes, i, format.constEnd());
+            continue;
+        }
+    }
+}
+
+/*QString MetaDataFormatter::processIfKeyWord(QString title)
+{
+    int pos = title.lastIndexOf("%if(");
+    int size = title.indexOf("%)",pos) - pos;
+
+    QStringList args = title.mid (pos + 4, size - 4).split("%,");
+    if(args.count() < 3)
+    {
+        qWarning("TitleFormatter: invalid title format");
+        return title;
+    }
+    //process condition
+    bool cond = true;
+    foreach(QString arg, args.at(0).split("%&"))
+    {
+        cond &= !arg.isEmpty();
+    }
+    QString r_str = cond ? args.at(1) : args.at(2);
+    title.replace (pos, size + 2, r_str);
+    if(title.contains("%if"))
+        return processIfKeyWord(title);
+    return title;
+}*/
diff --git a/src/qmmpui/metadataformatter2.h b/src/qmmpui/metadataformatter2.h
new file mode 100644
index 000000000..dd0bc6186
--- /dev/null
+++ b/src/qmmpui/metadataformatter2.h
@@ -0,0 +1,105 @@
+/***************************************************************************
+ *   Copyright (C) 2009-2014 by Ilya Kotov                                 *
+ *   forkotov02@hotmail.ru                                                 *
+ *                                                                         *
+ *   This program is free software; you can redistribute it and/or modify  *
+ *   it under the terms of the GNU General Public License as published by  *
+ *   the Free Software Foundation; either version 2 of the License, or     *
+ *   (at your option) any later version.                                   *
+ *                                                                         *
+ *   This program 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         *
+ *   GNU General Public License for more details.                          *
+ *                                                                         *
+ *   You should have received a copy of the GNU General Public License     *
+ *   along with this program; if not, write to the                         *
+ *   Free Software Foundation, Inc.,                                       *
+ *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.         *
+ ***************************************************************************/
+
+#ifndef METADATAFORMATTER2_H
+#define METADATAFORMATTER2_H
+
+#include <QString>
+#include <QMap>
+#include <qmmpui/playlisttrack.h>
+#include <qmmp/qmmp.h>
+
+/*! @brief The MetaDataFormatter formats metadata using templates.
+ * @author Ilya Kotov <forkotov02@hotmail.ru>
+ */
+class MetaDataFormatter2
+{
+public:
+    /*!
+     * Constructor.
+     * @param format Metadata template.
+     * Syntax:
+     * %p - artist,
+     * %a - album,
+     * %aa - album artist,
+     * %t - title,
+     * %n - track number,
+     * %NN - 2-digit track number,
+     * %g - genre,
+     * %c - comment,
+     * %C - composer,
+     * %D - disc number,
+     * %f - file name,
+     * %F - full path,
+     * %y - year,
+     * %l - duration,
+     * %if(A,B,C) or %if(A&B&C,D,E) - condition.
+     */
+    MetaDataFormatter2(const QString &format = QString());
+    /*!
+     * Converts metadata of item \b item to one string using template.
+     */
+    QString parse(const PlayListTrack *item);
+    /*!
+     * Converts metadata to one string using template.
+     * @param metaData Metadata array.
+     * @param length Length in seconds.
+     */
+    QString parse(const QMap<Qmmp::MetaData, QString> &metaData, qint64 length = 0);
+    /*!
+     * Returns formatted length (example: 05:02:03).
+     * \param length Length in seconds.
+     */
+    QString formatLength(qint64 length) const;
+
+private:
+    struct Node;
+    struct Param
+    {
+        enum {
+            KEY = 0,
+            TEXT,
+            NODES
+        } type;
+
+        Qmmp::MetaData key;
+        QString text;
+        QList<Node> children;
+    };
+    struct Node
+    {
+        enum {
+            PRINT_TEXT = 0,
+            IF_KEYWORD
+        } command;
+
+        QList<Param> params;
+    };
+
+    bool processKey(QList<Node> *nodes, QString::const_iterator i, QString::const_iterator end);
+    void processText(QList<Node> *nodes, QString::const_iterator i, QString::const_iterator end);
+
+    void compile(const QString &format);
+    QString m_format;
+    QList<Node> m_nodes;
+    //QString processIfKeyWord(QString title);
+};
+
+#endif // METADATAFORMATTER2_H
diff --git a/src/qmmpui/qmmpui.pro b/src/qmmpui/qmmpui.pro
index f90c8992e..58e9d2aa3 100644
--- a/src/qmmpui/qmmpui.pro
+++ b/src/qmmpui/qmmpui.pro
@@ -69,7 +69,8 @@ HEADERS += general.h \
     playlistcontainer_p.h \
     groupedcontainer_p.h \
     normalcontainer_p.h \
-    playlisttask_p.h
+    playlisttask_p.h \
+    metadataformatter2.h
 
 SOURCES += general.cpp \
     playlistparser.cpp \
@@ -103,7 +104,8 @@ SOURCES += general.cpp \
     groupedcontainer.cpp \
     normalcontainer.cpp \
     playlistcontainer.cpp \
-    playlisttask.cpp
+    playlisttask.cpp \
+    metadataformatter2.cpp
 
 FORMS += forms/detailsdialog.ui \
     forms/tageditor.ui \