File: pending_notifications.c

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/*                                                                  -*- c++ -*-
Copyright (C) 2004-2013 Christian Wieninger

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
Or, point your browser to http://www.gnu.org/licenses/old-licenses/gpl-2.0.html

The author can be reached at cwieninger@gmx.de

The project's page is at http://winni.vdr-developer.org/epgsearch
*/

#include <string>
#include "pending_notifications.h"
#include "epgsearchtools.h"


cPendingNotifications PendingNotifications;
char *cPendingNotification::buffer = NULL;
// -- cPendingNotifications -----------------------------------------------------------------

cPendingNotification::~cPendingNotification(void)
{
    if (buffer) {
	free(buffer);
	buffer = NULL;
    }
}
bool cPendingNotification::Parse(const char *s)
{
    char *t = skipspace(s + 1);
    switch (*s) {
	case 'F': strreplace(t, '|', '\n');
	    formatted = strdup(t);
	    break;
	default:  LogFile.eSysLog("ERROR: unexpected tag while reading epgsearch pending notifications data: %s", s);
	    return false;
    }
  return true;
}

bool cPendingNotification::Read(FILE *f)
{
    cPendingNotification *p = NULL;
    char *s;
    cReadLine ReadLine;
    while ((s = ReadLine.Read(f)) != NULL) {
	char *t = skipspace(s + 1);
	switch (*s) {
	    case 'N': if (!p) {
		tEventID EventID;
		int Type, TimerMod, SearchID;
		time_t Start;
		int n = sscanf(t, "%d %u %d %d %ld", &Type, &EventID, &TimerMod, &SearchID, &Start);
		if (n == 5) {
		    p = new cPendingNotification;
		    if (p)
		    {
		        p->type = Type;
			p->eventID = EventID;
			p->timerMod = TimerMod;
			p->searchID = SearchID;
			p->start = Start;

			PendingNotifications.Add(p);
		    }
		}
	    }
		break;
	    case 'C':
	    {
		s = skipspace(s + 1);
		char *pC = strchr(s, ' ');
		if (pC)
		    *pC = 0; // strips optional channel name
		if (*s) {
		    tChannelID channelID = tChannelID::FromString(s);
		    if (channelID.Valid()) {
			if (p)
			    p->channelID = channelID;
                    }
		    else {
			LogFile.Log(3, "ERROR: illegal channel ID: %s", s);
			return false;
                    }
		}
	    }
	    break;
	    case 'n':
		p = NULL;
		break;
	    default:  if (p && !p->Parse(s))
	    {
		LogFile.Log(1,"ERROR: parsing %s", s);
		return false;
	    }
	}
    }
    return true;
}


const char *cPendingNotification::ToText(void) const
{
  char* tmpFormatted = formatted!=""?strdup(formatted.c_str()):NULL;
    if (tmpFormatted)
	strreplace(tmpFormatted, '\n', '|');

    if (buffer)
	free(buffer);
    buffer = NULL;

    cChannel *channel = Channels.GetByChannelID(channelID, true, true);
    if (!channel)
	LogFile.Log(3,"invalid channel in pending notifications!");

    msprintf(&buffer, "N %d %u %d %d %ld\nC %s\n%s%s%sn",
	     type, eventID, timerMod, searchID, start,
	     channel?CHANNELSTRING(channel):"",
	     tmpFormatted?"F ":"",tmpFormatted?tmpFormatted:"", tmpFormatted?"\n":"");

    if (tmpFormatted)
	free(tmpFormatted);

    return buffer;
}

bool cPendingNotification::Save(FILE *f)
{
    return fprintf(f, "%s\n", ToText()) > 0;
}

bool cPendingNotifications::Load(const char *FileName)
{
    Clear();
    if (FileName) {
	free(fileName);
	fileName = strdup(FileName);
    }

    if (fileName && access(fileName, F_OK) == 0) {
	LogFile.iSysLog("loading %s", fileName);
	FILE *f = fopen(fileName, "r");
	bool result = false;
	if (f) {
	    result = cPendingNotification::Read(f);
	    fclose(f);
	}
	if (result)
	    LogFile.Log(2,"loaded pending notifications from %s (count: %d)", fileName, Count());
	else
	    LogFile.Log(1,"error loading pending notifications from %s (count: %d)", fileName, Count());
	return result;
    }
    return false;
}

bool cPendingNotifications::Save(void)
{
    bool result = true;
    cPendingNotification* l = (cPendingNotification*)this->First();
    cSafeFile f(fileName);
    if (f.Open()) {
	while (l) {
	    if (!l->Save(f)) {
                result = false;
                break;
	    }
	    l = (cPendingNotification*)l->Next();
	}
	if (!f.Close())
	    result = false;
    }
    else
	result = false;
    LogFile.Log(2,"saved pending notifications (count: %d)", Count());
    return result;
}