lib/space/auto_master/functor.cc

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//
// nis-util - NIS Administration Utilities
// Copyright (C) 2012 Peter Miller
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or (at
// your option) any later version.
//
// 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, see <http://www.gnu.org/licenses/>.
//

#include <lib/ac/string.h>
#include <lib/ac/unistd.h>

#include <lib/path_join.h>
#include <lib/space/auto_master/functor.h>

space_auto_master_functor::string_list_t
    space_auto_master_functor::include_search_path;
space_auto_master_functor::string_list_t space_auto_master_functor::suffixes;


space_auto_master_functor::~space_auto_master_functor()
{
}


space_auto_master_functor::space_auto_master_functor()
{
}


void
space_auto_master_functor::add_include_search_path(const rcstring &dir)
{
    include_search_path.push_back(dir);
}


void
space_auto_master_functor::add_suffix(const rcstring &sfx)
{
    const char *base = strrchr(sfx.c_str(), '/');
    if (base)
        ++base;
    else
        base = sfx.c_str();
    const char *cp = strrchr(base, '.');
    if (cp)
        suffixes.push_back(rcstring(cp + 1));
    else
        suffixes.push_back(base);
}


rcstring
space_auto_master_functor::find_file(const rcstring &fn)
{
    if (include_search_path.empty())
        include_search_path.push_back(".");
    for
    (
        string_list_t::const_iterator it = include_search_path.begin();
        it != include_search_path.end();
        ++it
    )
    {
        rcstring incl = *it;
        for
        (
            string_list_t::const_iterator sit = suffixes.begin();
            sit != suffixes.end();
            ++sit
        )
        {
            rcstring suf = *sit;
            rcstring s = path_join(incl, fn + "." + suf);
            if (access(s.c_str(), F_OK) == 0)
                return s;
        }

        //
        // try no suffix last
        //
        rcstring s = path_join(incl, fn);
        if (access(s.c_str(), F_OK) == 0)
            return s;
    }

    //
    // File not found.
    // Use the first include location and the first suffix.
    //
    rcstring fn2 = fn;
    if (!suffixes.empty())
        fn2 += "." + suffixes.front();
    return path_join(include_search_path.front(), fn2);
}


// vim: set ts=8 sw=4 et :