Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdemultimedia@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 247 insertions, 0 deletions

diff --git a/kmid/songlist.cpp b/kmid/songlist.cpp
new file mode 100644
index 00000000..8d98600c
--- /dev/null
+++ b/kmid/songlist.cpp
@@ -0,0 +1,247 @@
+/**************************************************************************
+
+    songlist.cc  - class SongList, which holds a list of songs (collection)
+    Copyright (C) 1997,98  Antonio Larrosa Jimenez
+
+    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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+    Send comments and bug fixes to larrosa@kde.org
+    or to Antonio Larrosa, Rio Arnoya, 10 5B, 29006 Malaga, Spain
+
+***************************************************************************/
+#include "songlist.h"
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+
+SongList::SongList(void)
+{
+    list=NULL;
+    last=NULL;
+    active=NULL;
+    ntotal=0;
+}
+
+SongList::SongList(SongList &src)
+{
+    list=last=active=NULL;
+    ntotal=0;
+    src.iteratorStart();
+    while (!src.iteratorAtEnd())
+    {
+        AddSong(src.getIteratorName());
+        src.iteratorNext();
+    }
+    if (src.active!=NULL) active=getSongid(src.active->id);
+}
+
+SongList::~SongList()
+{
+    clean();
+    Song *ptr=list;
+    active=last=NULL;
+    ntotal=0;
+    
+    while (ptr!=NULL)
+    {
+        list=ptr->next;
+        delete ptr->name;
+        delete ptr;
+        ptr=list;
+    }
+    
+}
+
+SongList::Song *SongList::getSongid(int id)
+{
+    Song *ptr=list;
+    while ((ptr!=NULL)&&(ptr->id!=id))
+        ptr=ptr->next;
+    
+    return ptr;
+}
+
+int SongList::AddSong(const char *song)
+{
+    if (!song) return 0;
+
+    if (last==NULL)
+    {
+        last=new Song;
+        list=last;
+    }
+    else
+    {
+        last->next=new Song;
+        last=last->next;
+    }
+    last->name=new char[strlen(song)+1];
+    strcpy(last->name,song);
+    last->id= ++ntotal;
+    last->next=NULL;
+    if (active==NULL) active=last;
+    return last->id;
+}
+
+void SongList::DelSong(int id)
+{
+    Song *ptr;
+    
+    if (list==NULL) return;
+    if (id==1)
+    {
+        if (last->id==1)
+        {
+            list=last=active=NULL;
+            ntotal=0;
+        }
+        else
+        {
+            ptr=list;
+            if (active->id==1) active=list->next;
+            list=list->next;
+            delete ptr->name;
+            delete ptr;
+            ntotal--;
+            
+            regenerateid(list,1);
+        }
+        return;
+    }
+    Song *ptr_prev=getSongid(id-1);
+    ptr=ptr_prev->next;
+    if (last->id==id) last=ptr_prev;
+    if (active->id==id) 
+        if (active->next!=NULL) active=active->next;
+        else active=ptr_prev;
+    
+    ntotal--;
+    ptr_prev->next=ptr->next;
+    delete ptr->name;
+    delete ptr;
+    regenerateid(ptr_prev->next,id);
+    
+}
+
+void SongList::regenerateid(Song *song,int id)
+{
+    Song *tmp=song;
+    int i=id;
+    while (tmp!=NULL)
+    {
+        tmp->id=i++;
+        tmp=tmp->next;
+    }
+    ntotal=i-1;
+}
+
+void SongList::setActiveSong(int id)
+{
+    Song *tmp=getSongid(id);
+    if (tmp!=NULL) active=tmp;
+}
+
+char *SongList::getName(int id)
+{
+    Song *tmp=getSongid(id);
+    if (tmp!=NULL) return tmp->name;
+    return NULL;
+}
+
+/*
+void SongList::saveList(FILE *fh)
+{
+    Song *ptr=list;
+    while (ptr!=NULL)
+    {
+        fputs(fh,ptr->name);
+        ptr=ptr->next;
+    }
+}
+*/
+
+void SongList::iteratorStart(void)
+{
+    it=list;
+}
+
+void SongList::iteratorNext(void)
+{
+    if (it!=NULL) it=it->next;
+}
+
+int SongList::getIteratorID(void)
+{
+    if (it==NULL) return -1;
+    return it->id;
+}
+
+char *SongList::getIteratorName(void)
+{
+    if (it==NULL) return NULL;
+    return it->name;
+}
+
+
+void SongList::clean(void)
+{
+    Song *tmp=list;
+    active=last=NULL;
+    ntotal=0;
+    
+    while (tmp!=NULL)
+    {
+        list=tmp->next;
+        delete [] tmp->name;
+        delete tmp;
+        tmp=list;
+    }
+}
+
+void SongList::copy(SongList &src)
+{
+    clean();
+    src.iteratorStart();
+    while (!src.iteratorAtEnd())
+    {
+        AddSong(src.getIteratorName());
+        src.iteratorNext();
+    }
+    if (src.active!=NULL) active=getSongid(src.active->id);
+}
+
+int SongList::next(void)
+{
+    if (list==NULL) {active=NULL;return 0;};
+    if (active!=NULL) active=active->next;
+    if (active==NULL) 
+    {
+        Song *tmp=list;
+        while (tmp->next!=NULL) tmp=tmp->next;
+        active=tmp;
+        return 0;
+    }
+    return 1;
+}
+
+
+void SongList::previous(void)
+{
+    if (list==NULL) {active=NULL;return;};
+    Song *tmp=list;
+    while ((tmp->next!=NULL)&&(tmp->next->id!=active->id)) tmp=tmp->next;
+    if (tmp->next==NULL) {active=list;return;};
+    active=tmp;
+}