StorageTypes.h

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/*
 * Copyright (c) [2004-2010] Novell, Inc.
 *
 * 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.
 */


#ifndef STORAGE_TYPES_H
#define STORAGE_TYPES_H


#include <string>
#include <vector>
#include <ostream>
#include <boost/algorithm/string.hpp>

#include "storage/Regex.h"
#include "storage/AppUtil.h"
#include "storage/StorageInterface.h"
#include "storage/XmlFile.h"
#include "storage/Enum.h"


namespace storage
{
    using std::string;
    using std::vector;


inline bool operator<(CType a, CType b)
{
    static const int order[] = {
        0, // CUNKNOWN
        1, // DISK
        5, // MD
        8, // LOOP
        7, // LVM
        6, // DM
        2, // DMRAID
        9, // NFSC
        3, // DMMULTIPATH
        4, // MDPART
       10, // BTRFSC
    };

    bool ret = order[a] < order[b];
    y2mil("a:" << toString(a) << " o(a):" << order[a] << " b:" << toString(b) << " o(b):" <<
          order[b] << " ret:" << ret);
    return ret;
}

inline bool operator<=( CType a, CType b )
    {
    return( a==b || a<b );
    }

inline bool operator>=( CType a, CType b )
    {
    return( !(a<b) );
    }

inline bool operator>( CType a, CType b )
    {
    return( a!=b && !(a<b) );
    }

struct contOrder
    {
    contOrder(CType t) : order(0)
        {
        if( t==LOOP )
            order=1;
        }
    operator unsigned() const { return( order ); }
    protected:
        unsigned order;
    };

std::ostream& operator<<(std::ostream& s, const PartitionSlotInfo& a);
std::ostream& operator<<(std::ostream& s, const FsCapabilities& a);

    enum CommitStage { DECREASE, INCREASE, FORMAT, SUBVOL, MOUNT };


    class Volume;
    class Container;

    struct commitAction
    {
        commitAction(CommitStage s, CType t, const Text& d, const Volume* v,
                     bool destr = false)
            : stage(s), type(t), description(d), destructive(destr), container(false), u(v)
        {
        }

        commitAction(CommitStage s, CType t, const Text& d, const Container* c,
                     bool destr = false)
            : stage(s), type(t), description(d), destructive(destr), container(true), u(c)
        {
        }

        commitAction(CommitStage s, CType t, const Volume* v)
            : stage(s), type(t), description(), destructive(false), container(false), u(v)
        {
        }

        commitAction(CommitStage s, CType t, const Container* c)
            : stage(s), type(t), description(), destructive(false), container(true), u(c)
        {
        }

        const CommitStage stage;
        const CType type;
        const Text description;
        const bool destructive;
        const bool container;

        const union U
        {
            U(const Volume* v) : vol(v) {}
            U(const Container* c) : co(c) {}

            const Volume* vol;
            const Container* co;
        } u;

        const Container* co() const { return container ? u.co : NULL; }
        const Volume* vol() const { return container ? NULL : u.vol; }

        bool operator==(const commitAction& rhs) const
            { return stage == rhs.stage && type == rhs.type; }
        bool operator<(const commitAction& rhs) const;
        bool operator<=(const commitAction& rhs) const
            { return *this < rhs || *this == rhs; }
        bool operator>=(const commitAction& rhs) const
            { return !(*this < rhs); }
        bool operator>(const commitAction& rhs) const
            { return !(*this < rhs && *this == rhs); }

        friend std::ostream& operator<<(std::ostream& s, const commitAction& a);
    };


    struct stage_is
    {
        stage_is(CommitStage t) : val(t) {}
        bool operator()(const commitAction& t) const { return t.stage == val; }
        const CommitStage val;
    };


    class UsedBy
    {

    public:

        UsedBy(UsedByType type, const string& device) : ub_type(type), ub_device(device) {}

        bool operator==(const UsedBy& rhs) const
            { return ub_type == rhs.ub_type && ub_device == rhs.ub_device; }
        bool operator!=(const UsedBy& rhs) const
            { return !(*this == rhs); }

        UsedByType type() const { return ub_type; }
        string device() const { return ub_device; }

        friend std::ostream& operator<<(std::ostream&, const UsedBy&);

        friend void setChildValue(xmlNode* node, const char* name, const UsedBy& value);

        operator UsedByInfo() const { return UsedByInfo(ub_type, ub_device); }

    private:

        UsedByType ub_type;
        string ub_device;

    };

    class Subvolume
    {

    public:

        Subvolume(const string& path) : p(path), del(false), create(false) {}
        Subvolume(const xmlNode* node) : p()
            {
            getChildValue(node, "path", p);
            }

        bool operator==(const Subvolume& rhs) const
            { return p == rhs.p && del == rhs.del; }
        bool operator!=(const Subvolume& rhs) const
            { return !(*this == rhs); }

        string path() const { return p; }
        bool deleted() const { return del; }
        void setDeleted( bool val=true ) { del=val; }
        bool created() const { return create; }
        void setCreated( bool val=true ) { create=val; }

        friend std::ostream& operator<<(std::ostream&, const Subvolume&);

        friend void setChildValue(xmlNode* node, const char* name, const Subvolume& value);

        operator SubvolInfo() const { return SubvolInfo(p); }

    private:
        string p;
        bool del;
        bool create;

    };


    struct regex_matches
    {
        regex_matches(const Regex& t) : val(t) {}
        bool operator()(const string& s) const { return val.match(s); }
        const Regex& val;
    };

    struct string_starts_with
    {
        string_starts_with(const string& t) : val(t) {}
        bool operator()(const string& s) const { return boost::starts_with(s, val); }
        const string& val;
    };

    struct string_contains
    {
        string_contains(const string& t) : val(t) {}
        bool operator()(const string& s) const { return boost::contains(s, val); }
        const string& val;
    };


    template <class Pred>
    vector<string>::iterator
    find_if(vector<string>& lines, Pred pred)
    {
        return std::find_if(lines.begin(), lines.end(), pred);
    }

    template <class Pred>
    vector<string>::const_iterator
    find_if(const vector<string>& lines, Pred pred)
    {
        return std::find_if(lines.begin(), lines.end(), pred);
    }

}


#endif

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