winix/core/dirs.cpp

221 lines
3.1 KiB
C++
Executable File

/*
* This file is a part of CMSLU -- Content Management System like Unix
* and is not publicly distributed
*
* Copyright (c) 2008, Tomasz Sowa
* All rights reserved.
*
*/
#include "dirs.h"
void Dirs::Clear()
{
dir_table.Clear();
// !! temporarily not clearing
//root.Clear();
root.id = -1;
}
void Dirs::ReadDirs()
{
Clear();
db.GetDirs(dir_table);
}
bool Dirs::GetDir(const std::string & name, long parent, Item ** item)
{
DirContainer::ParentIterator i = dir_table.FindFirstParent(parent);
for( ; i!=dir_table.ParentEnd() ; i = dir_table.NextParent(i) )
if( i->second->url == name )
{
*item = &(*i->second);
return true;
}
return false;
}
bool Dirs::ExtractName(const char * & s, std::string & name)
{
name.clear();
// skipping first slashes (can be more than one)
for( ; *s == '/' ; ++s);
for( ; *s != 0 && *s != '/' ; ++s)
name += *s;
return !name.empty();
}
bool Dirs::GetDir(const std::string & path, Item ** item)
{
long parent = -1;
std::string name;
const char * s = path.c_str();
Item * pitem = &root;
while( ExtractName(s, name) )
{
if( !GetDir(name, parent, &pitem) )
return false;
}
*item = pitem;
return true;
}
bool Dirs::GetDirId(const std::string & path, long * id)
{
Item * pitem;
if( !GetDir(path, &pitem) )
return false;
*id = pitem->id;
return true;
}
bool Dirs::GetDirId(const std::string & name, long parent, long * id)
{
Item * pitem;
if( !GetDir(name, parent, &pitem) )
return false;
*id = pitem->id;
return true;
}
bool Dirs::IsDir(long id)
{
if( id == -1 )
// root directory
return true;
DirContainer::Iterator i = dir_table.FindId(id);
if( i == dir_table.End() )
return false;
return true;
}
bool Dirs::GetDirChilds(long parent, std::vector<Item> & childs_table)
{
if( !IsDir(parent) )
return false;
DirContainer::ParentIterator i = dir_table.FindFirstParent(parent);
for( ; i != dir_table.ParentEnd() ; i = dir_table.NextParent(i) )
childs_table.push_back( *i->second );
return true;
}
// dodatkowo moze metoda AppendPath dodajaca sciezke do biezacego stringa?
// albo tutaj stringa nie czyscic?
// O(m * log n) (m- how many parts are in 'id')
bool Dirs::MakePath(long id, std::string & path)
{
DirContainer::Iterator i;
path.clear();
while( true )
{
if( id == -1 )
return true;
i = dir_table.FindId(id);
if( i == dir_table.End() )
return false;
id = i->parent_id;
path.insert(path.begin(), '/');
path.insert(0, i->url);
}
}
// with exceptions
Item * Dirs::GetDir(const std::string & path)
{
Item * pitem;
if( !GetDir(path, &pitem) )
throw Error(Error::incorrect_dir);
return pitem;
}
Item * Dirs::GetDir(const std::string & name, long parent)
{
Item * pitem;
if( !GetDir(name, parent, &pitem) )
throw Error(Error::incorrect_dir);
return pitem;
}
long Dirs::GetDirId(const std::string & path)
{
long id;
if( !GetDirId(path, &id) )
throw Error(Error::incorrect_dir);
return id;
}
long Dirs::GetDirId(const std::string & name, long parent)
{
long id;
if( !GetDirId(name, parent, &id) )
throw Error(Error::incorrect_dir);
return id;
}