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printing: update the coping of bundled templates

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This update includes:
- Instead of copyPath() use a new specialized function:
  copy_bundled_templates()
- The new function supports overwriting of templates
in the user path, but only if a template file is read-only
- If the file is RW create a backup of the file in the
form of: <file-name>-User.html
- Collect backup files and store them in a QStringList
which is then shown in a QMessageBox from MainWindow
to notifying the user about the backup

This change allows moving the maintenance of the bundled
templates back to the application developers and contributors
as currently the only one who can edit the templates in the user
path was the user.

Suggested-by: Dirk Hohndel <dirk@hohndel.org>
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
This commit is contained in:
Lubomir I. Ivanov 2017-11-24 22:54:54 +02:00
parent fc48cde77c
commit 65f0600679
3 changed files with 48 additions and 2 deletions
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29
desktop-widgets/templatelayout.cpp
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@ -62,6 +62,35 @@ void set_bundled_templates_as_read_only()
QFile::setPermissions(pathUser + QDir::separator() + f, QFileDevice::ReadOwner | QFileDevice::ReadUser);
}
void copy_bundled_templates(QString src, QString dst, QStringList *templateBackupList)
{
QDir dir(src);
if (!dir.exists())
return;
foreach (QString d, dir.entryList(QDir::Dirs | QDir::NoDotAndDotDot)) {
QString dst_path = dst + QDir::separator() + d;
dir.mkpath(dst_path);
copy_bundled_templates(src + QDir::separator() + d, dst_path, templateBackupList);
}
foreach (QString f, dir.entryList(QDir::Files)) {
QFile fileSrc(src + QDir::separator() + f);
QFile fileDest(dst + QDir::separator() + f);
if (fileDest.exists()) {
// if open() fails the file is either locked or r/o. try to remove it and then overwrite
if (!fileDest.open(QFile::ReadWrite | QFile::Text)) {
fileDest.setPermissions(QFileDevice::WriteOwner | QFileDevice::WriteUser);
fileDest.remove();
} else { // if the file is not read-only create a backup
fileDest.close();
const QString targetFile = fileDest.fileName().replace(".html", "-User.html");
fileDest.copy(targetFile);
*templateBackupList << targetFile;
}
}
fileSrc.copy(fileDest.fileName()); // in all cases copy the file
}
}
TemplateLayout::TemplateLayout(print_options *PrintOptions, template_options *templateOptions) :
m_engine(NULL)
{