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authortoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
committertoma <toma@283d02a7-25f6-0310-bc7c-ecb5cbfe19da>2009-11-25 17:56:58 +0000
commit460c52653ab0dcca6f19a4f492ed2c5e4e963ab0 (patch)
tree67208f7c145782a7e90b123b982ca78d88cc2c87 /kalarm/calendarcompat.cpp
downloadtdepim-460c52653ab0dcca6f19a4f492ed2c5e4e963ab0.tar.gz
tdepim-460c52653ab0dcca6f19a4f492ed2c5e4e963ab0.zip
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/kdepim@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da
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+/*
+ * calendarcompat.cpp - compatibility for old calendar file formats
+ * Program: kalarm
+ * Copyright © 2001-2006 by David Jarvie <software@astrojar.org.uk>
+ *
+ * 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.
+ */
+
+#include "kalarm.h"
+
+#include <qfile.h>
+#include <qtextstream.h>
+#include <qstringlist.h>
+
+#include <kapplication.h>
+#include <kaboutdata.h>
+#include <kdebug.h>
+
+#include <libkcal/calendar.h>
+
+#include "alarmevent.h"
+#include "functions.h"
+#include "preferences.h"
+#include "calendarcompat.h"
+
+using namespace KCal;
+
+
+/******************************************************************************
+* Find the version of KAlarm which wrote the calendar file, and do any
+* necessary conversions to the current format. The calendar is not saved - any
+* conversions will only be saved if changes are made later.
+*/
+void CalendarCompat::fix(KCal::Calendar& calendar, const QString& localFile)
+{
+ bool version057_UTC = false;
+ QString subVersion;
+ int version = readKAlarmVersion(calendar, subVersion);
+ if (!version)
+ {
+ // The calendar was created either by the current version of KAlarm,
+ // or another program, so don't do any conversions
+ return;
+ }
+ if (version == KAlarm::Version(0,5,7) && !localFile.isEmpty())
+ {
+ // KAlarm version 0.5.7 - check whether times are stored in UTC, in which
+ // case it is the KDE 3.0.0 version, which needs adjustment of summer times.
+ version057_UTC = isUTC(localFile);
+ kdDebug(5950) << "CalendarCompat::fix(): KAlarm version 0.5.7 (" << (version057_UTC ? "" : "non-") << "UTC)\n";
+ }
+ else
+ kdDebug(5950) << "CalendarCompat::fix(): KAlarm version " << version << endl;
+
+ // Convert events to current KAlarm format for when calendar is saved
+ KAEvent::convertKCalEvents(calendar, version, version057_UTC);
+}
+
+/******************************************************************************
+* Return the KAlarm version which wrote the calendar which has been loaded.
+* The format is, for example, 000507 for 0.5.7.
+* Reply = 0 if the calendar was created by the current version of KAlarm,
+* KAlarm pre-0.3.5, or another program.
+*/
+int CalendarCompat::readKAlarmVersion(KCal::Calendar& calendar, QString& subVersion)
+{
+ subVersion = QString::null;
+ const QString& prodid = calendar.productId();
+
+ // Find the KAlarm identifier
+ QString progname = QString::fromLatin1(" KAlarm ");
+ int i = prodid.find(progname, 0, false);
+ if (i < 0)
+ {
+ // Older versions used KAlarm's translated name in the product ID, which
+ // could have created problems using a calendar in different locales.
+ progname = QString(" ") + kapp->aboutData()->programName() + ' ';
+ i = prodid.find(progname, 0, false);
+ if (i < 0)
+ return 0; // calendar wasn't created by KAlarm
+ }
+
+ // Extract the KAlarm version string
+ QString ver = prodid.mid(i + progname.length()).stripWhiteSpace();
+ i = ver.find('/');
+ int j = ver.find(' ');
+ if (j >= 0 && j < i)
+ i = j;
+ if (i <= 0)
+ return 0; // missing version string
+ ver = ver.left(i); // ver now contains the KAlarm version string
+ if (ver == KAlarm::currentCalendarVersionString())
+ return 0; // the calendar is in the current KAlarm format
+ return KAlarm::getVersionNumber(ver, &subVersion);
+}
+
+/******************************************************************************
+ * Check whether the calendar file has its times stored as UTC times,
+ * indicating that it was written by the KDE 3.0.0 version of KAlarm 0.5.7.
+ * Reply = true if times are stored in UTC
+ * = false if the calendar is a vCalendar, times are not UTC, or any error occurred.
+ */
+bool CalendarCompat::isUTC(const QString& localFile)
+{
+ // Read the calendar file into a QString
+ QFile file(localFile);
+ if (!file.open(IO_ReadOnly))
+ return false;
+ QTextStream ts(&file);
+ ts.setEncoding(QTextStream::Latin1);
+ QString text = ts.read();
+ file.close();
+
+ // Extract the CREATED property for the first VEVENT from the calendar
+ QString VCALENDAR = QString::fromLatin1("BEGIN:VCALENDAR");
+ QString VEVENT = QString::fromLatin1("BEGIN:VEVENT");
+ QString CREATED = QString::fromLatin1("CREATED:");
+ QStringList lines = QStringList::split(QChar('\n'), text);
+ for (QStringList::ConstIterator it = lines.begin(); it != lines.end(); ++it)
+ {
+ if ((*it).startsWith(VCALENDAR))
+ {
+ while (++it != lines.end())
+ {
+ if ((*it).startsWith(VEVENT))
+ {
+ while (++it != lines.end())
+ {
+ if ((*it).startsWith(CREATED))
+ return (*it).endsWith("Z");
+ }
+ }
+ }
+ break;
+ }
+ }
+ return false;
+}