//  This may look like C code, but it is really -*- C++ -*-

//  ------------------------------------------------------------------
//  The Goldware Library
//  Copyright (C) 1999-2000 Alexander S. Aganichev
//  ------------------------------------------------------------------
//  This library is free software; you can redistribute it and/or
//  modify it under the terms of the GNU Library General Public
//  License as published by the Free Software Foundation; either
//  version 2 of the License, or (at your option) any later version.
//
//  This library 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
//  Library General Public License for more details.
//
//  You should have received a copy of the GNU Library General Public
//  License along with this program; if not, write to the Free
//  Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
//  MA 02111-1307, USA
//  ------------------------------------------------------------------
//  $Id$
//  ------------------------------------------------------------------
//  Directory maintenance class.
//  ------------------------------------------------------------------

#include <gdirposx.h>
#include <gstrall.h>
#include <gwildmat.h>
#ifndef _MSC_VER
#include <dirent.h>
#else
#include <io.h>
#endif
#ifndef __HAVE_DRIVES__
#include <pwd.h>
#endif


//  ------------------------------------------------------------------

gdirentry::gdirentry() : name(), dirname(NULL)
{
}


//  ------------------------------------------------------------------

gdirentry::~gdirentry()
{
}


//  ------------------------------------------------------------------

gposixdir::gposixdir() : dirname(), ret(), entries()
{
    ok = false;
}


//  ------------------------------------------------------------------

gposixdir::gposixdir(const char *name) : dirname(), ret(), entries()
{
    cd(name);
}


//  ------------------------------------------------------------------

gposixdir::~gposixdir()
{
}


//  ------------------------------------------------------------------

#ifndef _MSC_VER
void gposixdir::cd(const char *name, bool relative)
{
    std::string ndirname;
    if(not *name)
        name = ".";
    if(relative) {
        dirname += "/";
        dirname += name;
    } else
        dirname = name;
    ok = maketruepath(dirname);
    entries.clear();
    DIR *d = opendir(dirname.c_str());
    if(d == NULL)
        ok = false;
    else {
        struct dirent *de;
        while((de=readdir(d)) != NULL) {
            ndirname = de->d_name;
#ifdef __HAVE_DRIVES__
            if((ndirname != ".") and not ((ndirname == "..") and streql(dirname.c_str()+1, ":/")))
#else
            if((ndirname != ".") and not ((ndirname == "..") and (dirname == "/")))
#endif
                entries.push_back(ndirname);
        }
        closedir(d);
        rewind();
    }
}
#else
void gposixdir::cd(const char *name, bool relative)
{
    std::string ndirname;
    if(not *name)
        name = ".";
    if(relative) {
        dirname += "/";
        dirname += name;
    } else
        dirname = name;
    ok = maketruepath(dirname);
    entries.clear();
    ndirname = dirname;
    if ((ndirname.end() > ndirname.begin()) && (*(ndirname.end()-1) == '/'))
        ndirname += "*";
    else
        ndirname += "/*";
    struct _finddata_t de;
#if  defined(_MSC_VER) && _MSC_VER>1800
    intptr_t d = _findfirst(ndirname.c_str(), &de);
#else
    long d = _findfirst(ndirname.c_str(), &de);
#endif
    if(d == -1) {
        if(is_dir(dirname))
            ok = true;
        else
            ok = false;
    }
    else {
        do {
            ndirname = de.name;
#ifdef __HAVE_DRIVES__
            if((ndirname != ".") and not ((ndirname == "..") and streql(dirname.c_str()+1, ":/")))
#else
            if((ndirname != ".") and not ((ndirname == "..") and (dirname == "/")))
#endif
                entries.push_back(ndirname);
        } while(_findnext(d, &de) == 0);
        _findclose(d);
        rewind();
    }
}
#endif

//  ------------------------------------------------------------------

const gdirentry *gposixdir::nextentry(const char *mask, bool nameonly)
{
    while(last_entry < entries.size()) {
        if(mask and not gwildmat(entries[last_entry].c_str(), mask)) {
            ++last_entry;
            continue;
        }
        ret.name = entries[last_entry];
        ret.dirname = dirname.c_str();
        if(not nameonly) {
            std::string pn = ret.dirname;
            pn += "/";
            pn += ret.name;
            size_t skipfrom;
            while((skipfrom=pn.find("//")) != pn.npos)
                pn.erase(skipfrom, 1);
            stat(pn.c_str(), &ret.stat_info);
        }
        ++last_entry;
        return &ret;
    }
    return NULL;
}


//  ------------------------------------------------------------------