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tdemultimedia/tdemid/slman.cpp

321 lines
7.1 KiB

/**************************************************************************
slman.cc - SongList Manager, which holds a set of collections (SongLists)
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
Send comments and bug fixes to larrosa@kde.org
or to Antonio Larrosa, Rio Arnoya, 10 5B, 29006 Malaga, Spain
***************************************************************************/
#include "slman.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "version.h"
#include <tdelocale.h>
SLManager::SLManager()
{
list=NULL;
ntotal=0;
tempsl=NULL;
createTemporaryCollection();
}
SLManager::SLManager(SLManager &src)
{
list=NULL;
ntotal=0;
tempsl=NULL;
SongListNode *srcSL=src.list;
SongList *tmpSL;
int i;
while (srcSL!=NULL)
{
i=createCollection(srcSL->name);
tmpSL=getCollection(i);
if (tmpSL!=NULL)
tmpSL->copy(*srcSL->SL);
srcSL=srcSL->next;
}
if (src.tempsl!=NULL) tempsl=new SongList(*src.tempsl);
else tempsl=NULL;
}
SLManager::~SLManager()
{
SongListNode *ptr;
ptr=list;
while (ptr!=NULL)
{
list=ptr->next;
if (ptr->SL!=NULL) delete ptr->SL;
if (ptr->name!=NULL) delete ptr->name;
delete ptr;
ptr=list;
}
if (tempsl!=NULL) delete tempsl;
ntotal=0;
}
int SLManager::createCollection(const char *name)
{
SongListNode *ptr;
if (nameUsed(name))
{
printf("Name '%s' is already used\n",name);
return -1;
}
if (list==NULL)
{
list=new SongListNode;
list->id=1;
ntotal=1;
ptr=list;
}
else
{
ptr=list;
while (ptr->next!=NULL) ptr=ptr->next;
ptr->next=new SongListNode;
ptr=ptr->next;
ptr->id= ++ntotal;
}
ptr->SL=new SongList;
ptr->next=NULL;
if (name!=NULL)
{
ptr->name=new char[strlen(name)+1];
strcpy(ptr->name,name);
}
else
{
ptr->name=getNotUsedName();
}
return ptr->id;
}
char *SLManager::getNotUsedName(void)
{
char *trythis;
trythis=new char[100];
strcpy(trythis,"No Name");
int tries=1;
int success=0;
while (!success)
{
if (nameUsed(trythis)) sprintf(trythis,"No Name - %d",++tries);
else
success=1;
}
return trythis;
}
int SLManager::nameUsed(const char *name)
{
/*
SongListNode *ptr=list;
int used=0;
while ((!used)&&(ptr!=NULL))
{
if (strcmp(ptr->name,name)==0) used=1;
ptr=ptr->next;
};
return used;
*/
if (getCollection(name)==NULL) return 0;
return 1;
}
void SLManager::deleteCollection(int id)
{
if (list==NULL) return;
SongListNode *ptr=list;
SongListNode *ptr2;
if (id==1) list=list->next;
else
{
ptr2=list;
while ((ptr!=NULL)&&(ptr->id!=id))
{
ptr2=ptr;
ptr=ptr->next;
}
if (ptr==NULL)
{
printf("Trying to delete a not used id\n");
return;
}
ptr2->next=ptr->next;
}
ptr2=ptr->next;
delete ptr->SL;
delete ptr->name;
delete ptr;
regenerateid(ptr2,id);
}
void SLManager::regenerateid(SongListNode *sl,int id)
{
SongListNode *tmp=sl;
int i=id;
while (tmp!=NULL)
{
tmp->id=i++;
tmp=tmp->next;
}
ntotal=i-1;
}
void SLManager::changeCollectionName(int id,const char *newname)
{
if (id<1) return;
if (nameUsed(newname))
{
printf("Cannot change name, '%s' is already used\n",newname);
return;
}
SongListNode *ptr=list;
while ((ptr!=NULL)&&(ptr->id!=id)) ptr=ptr->next;
if (ptr==NULL) return;
delete ptr->name;
ptr->name=new char[strlen(newname)+1];
strcpy(ptr->name,newname);
}
SongList *SLManager::getCollection(int id)
{
if (id==0) return tempsl;
SongListNode *ptr=list;
while ((ptr!=NULL)&&(ptr->id!=id)) ptr=ptr->next;
if (ptr==NULL) return NULL;
return ptr->SL;
}
SongList *SLManager::getCollection(const char *name)
{
SongListNode *ptr=list;
while ((ptr!=NULL)&&(strcmp(ptr->name,name)!=0)) ptr=ptr->next;
if (ptr==NULL) return NULL;
return ptr->SL;
}
const char *SLManager::getCollectionName(int id)
{
if (id==0) return I18N_NOOP("Temporary Collection");
SongListNode *ptr=list;
while ((ptr!=NULL)&&(ptr->id!=id)) ptr=ptr->next;
if (ptr==NULL) return NULL;
return ptr->name;
}
void SLManager::loadConfig(const char *filename)
{
#ifdef GENERAL_DEBUG_MESSAGES
printf("Loading collections\n");
#endif
FILE *fh=fopen(filename,"rt");
if (fh==NULL)
{
printf("Collections cannot be loaded\n(File %s doesn't exist or can't be opened)\n",filename);
return;
}
char s[300];
SongList *sl=NULL;
int activeid=0;
while (!feof(fh))
{
s[0] = 0;
fgets(s,299,fh);
if ((strlen(s)>0)&&(s[strlen(s)-1]==10)) s[strlen(s)-1]=0;
switch (s[0])
{
case (0) : break;
case (10) : break;
case ('=') :
{
if (sl!=NULL) sl->setActiveSong(activeid);
int id=createCollection(&s[1]);
sl=getCollection(id);
fgets(s,299,fh);
activeid=atoi(s);
}
break;
default :
{
if (sl!=NULL) sl->AddSong((const char *)s);
}
}
}
if (sl!=NULL) sl->setActiveSong(activeid);
fclose(fh);
}
void SLManager::saveConfig(const char *filename)
{
SongListNode *ptr=list;
FILE *fh=fopen(filename,"wt");
if (fh==NULL)
{
printf("Collections couldn't be saved\n");
return;
}
char s[FILENAME_MAX];
SongList *sl;
while (ptr!=NULL)
{
sprintf(s,"=%s\n",ptr->name);
fputs(s,fh);
sl=ptr->SL;
sprintf(s,"%d\n",sl->getActiveSongID());
fputs(s,fh);
sl->iteratorStart();
while (!sl->iteratorAtEnd())
{
sprintf(s,"%s\n",sl->getIteratorName());
fputs(s,fh);
sl->iteratorNext();
}
// ptr->SL->saveList(fh);
fputs("\n",fh);
ptr=ptr->next;
}
fclose(fh);
}
SongList *SLManager::createTemporaryCollection(void)
{
if (tempsl==NULL)
tempsl=new SongList();
else
tempsl->clean();
return tempsl;
}