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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 Sun Microsystems, Inc.
*
* 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; version 2 of the License.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* cached_directory.cc
*
* @brief
* Implementation of CachedDirectory class.
*/
#include <config.h>
#include <dirent.h>
#include <drizzled/definitions.h>
#include <boost/foreach.hpp>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <strings.h>
#include <limits.h>
#include <drizzled/cached_directory.h>
#include <drizzled/util/find_ptr.h>
#include <drizzled/error_t.h>
#include <drizzled/error.h>
#include <drizzled/errmsg_print.h>
using namespace std;
using namespace drizzled;
namespace drizzled {
CachedDirectory::CachedDirectory() :
error(0)
{
}
CachedDirectory::CachedDirectory(const string &in_path) :
error(0),
use_full_path(false)
{
// TODO: Toss future exception
(void) open(in_path);
}
CachedDirectory::CachedDirectory(const string& in_path, set<string>& allowed_exts) :
error(0),
use_full_path(false)
{
// TODO: Toss future exception
(void) open(in_path, allowed_exts);
}
CachedDirectory::CachedDirectory(const string& in_path, enum CachedDirectory::FILTER filter, bool use_full_path_arg) :
error(0),
use_full_path(use_full_path_arg)
{
set<string> empty;
// TODO: Toss future exception
(void) open(in_path, empty, filter);
}
CachedDirectory::~CachedDirectory()
{
BOOST_FOREACH(Entries::reference iter, entries)
delete iter;
}
bool CachedDirectory::open(const string &in_path)
{
set<string> empty;
return open(in_path, empty);
}
bool CachedDirectory::open(const string &in_path, set<string> &allowed_exts)
{
return open(in_path, allowed_exts, CachedDirectory::NONE);
}
bool CachedDirectory::open(const string &in_path, set<string> &allowed_exts, enum CachedDirectory::FILTER filter)
{
DIR *dirp= opendir(in_path.c_str());
if (dirp == NULL)
{
error= errno;
return false;
}
path= in_path;
union {
dirent entry;
#ifdef __sun
/*
* The readdir_r() call on Solaris operates a bit differently from other
* systems in that the dirent structure must be allocated along with enough
* space to contain the filename (see man page for readdir_r on Solaris).
* Instead of dynamically try to allocate this buffer, just set the max
* name for a path instead.
*/
char space[sizeof(dirent) + PATH_MAX + 1];
#endif
} buffer;
int retcode;
dirent *result;
while ((retcode= readdir_r(dirp, &buffer.entry, &result)) == 0 &&
result != NULL)
{
std::string buffered_fullpath;
if (not allowed_exts.empty())
{
char *ptr= rindex(result->d_name, '.');
if (ptr && allowed_exts.count(ptr))
{
entries.push_back(new Entry(result->d_name));
}
}
else
{
switch (filter)
{
case DIRECTORY:
{
struct stat entrystat;
if (result->d_name[0] == '.') // We don't pass back anything hidden at the moment.
continue;
if (use_full_path)
{
buffered_fullpath.append(in_path);
if (buffered_fullpath[buffered_fullpath.length()] != '/')
buffered_fullpath.append(1, FN_LIBCHAR);
}
buffered_fullpath.append(result->d_name);
int err= stat(buffered_fullpath.c_str(), &entrystat);
if (err != 0)
{
errmsg_printf(error::WARN, ER(ER_CANT_GET_STAT),
buffered_fullpath.c_str(),
errno);
}
if (err == 0 && S_ISDIR(entrystat.st_mode))
{
entries.push_back(new Entry(result->d_name));
}
}
break;
case FILE:
{
struct stat entrystat;
buffered_fullpath.append(in_path);
if (buffered_fullpath[buffered_fullpath.length() - 1] != '/')
buffered_fullpath.append(1, FN_LIBCHAR);
buffered_fullpath= result->d_name;
stat(buffered_fullpath.c_str(), &entrystat);
if (S_ISREG(entrystat.st_mode))
{
entries.push_back(new Entry(result->d_name));
}
}
break;
case NONE:
case MAX:
entries.push_back(new Entry(result->d_name));
break;
}
}
}
closedir(dirp);
error= retcode;
return error == 0;
}
std::ostream& operator<<(std::ostream& output, const CachedDirectory &directory)
{
output << "CachedDirectory:(Path: " << directory.getPath() << ")\n";
BOOST_FOREACH(const CachedDirectory::Entry* iter, directory.getEntries())
output << "\t(" << iter->filename << ")\n";
return output;
}
} /* namespace drizzled */
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