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Ensure that CALL3.TXT is not deleted while updating the file

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This is necessary so that symlinks that may be used to share CALL3.TXT
between WSJT-X  instances and with  and MAP65  do not get  broken when
adding new entries in either application.
This commit is contained in:
Bill Somerville 2021-09-20 17:38:09 +01:00
parent f884f77321
commit 917acbb97f
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GPG Key ID: D864B06D1E81618F
2 changed files with 87 additions and 81 deletions
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25
map65/mainwindow.cpp
View File

@ -1970,16 +1970,16 @@ void MainWindow::on_addButton_clicked() //Add button
<< endl
#endif
;
f1.close();
f1.open(QIODevice::ReadOnly | QIODevice::Text);
f1.seek (0);
}
QString tmpFile = m_appDir + "/CALL3.TMP";
QFile f2(tmpFile);
if(!f2.open(QIODevice::WriteOnly | QIODevice::Text)) {
if(!f2.open(QIODevice::ReadWrite | QIODevice::Truncate | QIODevice::Text)) {
msgBox("Cannot open " + tmpFile);
return;
}
{
QTextStream in(&f1);
QTextStream out(&f2);
QString hc=hiscall;
@ -2012,16 +2012,19 @@ void MainWindow::on_addButton_clicked() //Add button
}
}
} while(!s.isNull());
f1.close();
if(hc>hc1 && !m_call3Modified) out << newEntry + "\n";
}
if(m_call3Modified) {
QFile f0(m_appDir + "/CALL3.OLD");
if(f0.exists()) f0.remove();
QFile f1(m_appDir + "/CALL3.TXT");
f1.rename(m_appDir + "/CALL3.OLD");
f2.rename(m_appDir + "/CALL3.TXT");
f2.close();
auto const& old_path = m_appDir + "/CALL3.OLD";
QFile f0 {old_path};
if (f0.exists ()) f0.remove ();
f1.copy (old_path); // copying as we want to preserve
// symlinks
f1.open (QFile::WriteOnly | QFile::Text); // truncates
f2.seek (0);
f1.write (f2.readAll ()); // copy contents
f2.remove ();
}
}

25
widgets/mainwindow.cpp
View File

@ -5670,16 +5670,16 @@ void MainWindow::on_addButton_clicked() //Add button
<< endl
#endif
;
f1.close();
f1.open(QIODevice::ReadOnly | QIODevice::Text);
f1.seek (0);
}
QFile f2 {m_config.writeable_data_dir ().absoluteFilePath ("CALL3.TMP")};
if(!f2.open(QIODevice::WriteOnly | QIODevice::Text)) {
if(!f2.open(QIODevice::ReadWrite | QIODevice::Truncate | QIODevice::Text)) {
MessageBox::warning_message (this, tr ("Add to CALL3.TXT")
, tr ("Cannot open \"%1\" for writing: %2")
.arg (f2.fileName ()).arg (f2.errorString ()));
return;
}
{
QTextStream in(&f1); //Read from CALL3.TXT
QTextStream out(&f2); //Copy into CALL3.TMP
QString hc=hisCall;
@ -5711,16 +5711,19 @@ void MainWindow::on_addButton_clicked() //Add button
}
}
} while(!s.isNull());
f1.close();
if(hc>hc1 && !m_call3Modified) out << newEntry + QChar::LineFeed;
}
if(m_call3Modified) {
QFile f0 {m_config.writeable_data_dir ().absoluteFilePath ("CALL3.OLD")};
if(f0.exists()) f0.remove();
QFile f1 {m_config.writeable_data_dir ().absoluteFilePath ("CALL3.TXT")};
f1.rename(m_config.writeable_data_dir ().absoluteFilePath ("CALL3.OLD"));
f2.rename(m_config.writeable_data_dir ().absoluteFilePath ("CALL3.TXT"));
f2.close();
auto const& old_path = m_config.writeable_data_dir ().absoluteFilePath ("CALL3.OLD");
QFile f0 {old_path};
if (f0.exists ()) f0.remove ();
f1.copy (old_path); // copying as we want to
// preserve symlinks
f1.open (QFile::WriteOnly | QFile::Text); // truncates
f2.seek (0);
f1.write (f2.readAll ()); // copy contents
f2.remove ();
}
}