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/*
* Copyright (c) [2011-2015] Novell, Inc.
* Copyright (c) [2016-2020] SUSE LLC
*
* All Rights Reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as published
* by the Free Software Foundation.
*
* 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, contact Novell, Inc.
*
* To contact Novell about this file by physical or electronic mail, you may
* find current contact information at www.novell.com.
*/
#include <iostream>
#include <snapper/AppUtil.h>
#include "utils/text.h"
#include "GlobalOptions.h"
#include "proxy.h"
namespace snapper
{
using namespace std;
void
help_delete()
{
cout << _(" Delete snapshot:") << '\n'
<< _("\tsnapper delete <number>") << '\n'
<< '\n'
<< _(" Options for 'delete' command:") << '\n'
<< _("\t--sync, -s\t\t\tSync after deletion.") << '\n'
<< endl;
}
void
filter_undeletables(ProxySnapshots& snapshots, vector<ProxySnapshots::iterator>& nums)
{
auto filter = [&snapshots, &nums](ProxySnapshots::const_iterator undeletable, const char* message)
{
if (undeletable == snapshots.end())
return;
unsigned int num = undeletable->getNum();
vector<ProxySnapshots::iterator>::iterator keep = find_if(nums.begin(), nums.end(),
[num](ProxySnapshots::iterator it){ return num == it->getNum(); });
if (keep != nums.end())
{
cerr << sformat(message, num) << endl;
nums.erase(keep);
}
};
ProxySnapshots::const_iterator current_snapshot = snapshots.begin();
filter(current_snapshot, _("Cannot delete snapshot %d since it is the current system."));
ProxySnapshots::const_iterator active_snapshot = snapshots.getActive();
filter(active_snapshot, _("Cannot delete snapshot %d since it is the currently mounted snapshot."));
ProxySnapshots::const_iterator default_snapshot = snapshots.getDefault();
filter(default_snapshot, _("Cannot delete snapshot %d since it is the next to be mounted snapshot."));
}
void
command_delete(GlobalOptions& global_options, GetOpts& get_opts, ProxySnappers*, ProxySnapper* snapper)
{
const vector<Option> options = {
Option("sync", no_argument, 's')
};
ParsedOpts opts = get_opts.parse("delete", options);
bool sync = false;
ParsedOpts::const_iterator opt;
if ((opt = opts.find("sync")) != opts.end())
sync = true;
if (!get_opts.has_args())
{
SN_THROW(OptionsException(_("Command 'delete' needs at least one argument.")));
}
ProxySnapshots& snapshots = snapper->getSnapshots();
vector<ProxySnapshots::iterator> nums;
while (get_opts.has_args())
{
string arg = get_opts.pop_arg();
if (arg.find_first_of("-") == string::npos)
{
ProxySnapshots::iterator tmp = snapshots.findNum(arg);
nums.push_back(tmp);
}
else
{
pair<ProxySnapshots::iterator, ProxySnapshots::iterator> range =
snapshots.findNums(arg, "-");
if (range.first->getNum() > range.second->getNum())
swap(range.first, range.second);
for (unsigned int i = range.first->getNum(); i <= range.second->getNum(); ++i)
{
ProxySnapshots::iterator x = snapshots.find(i);
if (x != snapshots.end())
{
if (find_if(nums.begin(), nums.end(), [i](ProxySnapshots::iterator it)
{ return it->getNum() == i; }) == nums.end())
nums.push_back(x);
}
}
}
}
filter_undeletables(snapshots, nums);
snapper->deleteSnapshots(nums, global_options.verbose());
if (sync)
snapper->syncFilesystem();
}
}
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