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//BEGIN_LICENSE
//
// Copyright (c) 2000 The Open Group, BMC Software, Tivoli Systems, IBM
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
//END_LICENSE
//BEGIN_HISTORY
//
// Author:
//
// $Log: Dir.cpp,v $
// Revision 1.1  2001/02/11 05:42:33  mike
// new
//
// Revision 1.1.1.1  2001/01/14 19:50:23  mike
// Pegasus import
//
//
//END_HISTORY

#include "Destroyer.h"
#include "Dir.h"
#include "Exception.h"

PEGASUS_NAMESPACE_BEGIN

#ifdef PEGASUS_OS_TYPE_WINDOWS
# include <io.h>
# include <direct.h>

struct DirRep
{
    long file;
    struct _finddata_t findData;
};

Dir::Dir(const String& path)
{
    Destroyer<char> p(strcat(path.allocateCString(2), "/*"));
    _rep = new DirRep;
    _rep->file = _findfirst(p.getPointer(), &_rep->findData);

    if (_rep->file == -1)
    {
	_more = false;
	throw CannotOpenDirectory(path);
    }
    else
	_more = true;
}

Dir::~Dir()
{
    if (_rep->file != -1)
	_findclose(_rep->file);

    delete _rep;
}

const char* Dir::getName() const
{
    return _rep->findData.name;
}

void Dir::next()
{
    if (!_more)
	return;

    _more = _findnext(_rep->file, &_rep->findData) == 0;
}

#else /* PEGASUS_OS_TYPE_WINDOWS */
# include <dirent.h>

// Clone the string to a plain old C-String and null out
// trailing slash (if any).

static char* _clonePath(const String& path)
{
    char* p = path.allocateCString();

    if (!*p)
	return p;

    char* last = p + path.getLength() - 1;

    if (*last == '/')
	*last = '\0';

    return p;
}

struct DirRep
{
    DIR* dir;
    struct dirent* entry;
};

Dir::Dir(const String& path)
{
    Destroyer<char> p(_clonePath(path));
    _rep = new DirRep;
    _rep->dir = opendir(p.getPointer());

    if (_rep->dir)
    {
	_rep->entry = readdir(_rep->dir);
	_more = _rep->entry != NULL;
    }
    else
    {
	_more = false;
	throw CannotOpenDirectory(path);
    }
}

Dir::~Dir()
{
    if (_rep->dir)
	closedir(_rep->dir);

    delete _rep;
}

const char* Dir::getName() const
{
    return _more ? _rep->entry->d_name : "";
}

void Dir::next()
{
    if (_more)
    {
	_rep->entry = readdir(_rep->dir);
	_more = _rep->entry != NULL;
    }
}

#endif /* !PEGASUS_OS_TYPE_WINDOWS */

PEGASUS_NAMESPACE_END