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/*
* Copyright (c) 2011-2014, Chris Johns <chrisj@rtems.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <errno.h>
#include <string.h>
#include <sys/stat.h>
#include <unistd.h>
#include <rld.h>
namespace rld
{
namespace path
{
const std::string
basename (const std::string& name)
{
size_t b = name.find_last_of (RLD_PATH_SEPARATOR);
if (b != std::string::npos)
return name.substr (b + 1);
return name;
}
const std::string
dirname (const std::string& name)
{
size_t b = name.find_last_of (RLD_PATH_SEPARATOR);
if (b != std::string::npos)
return name.substr (0, b);
return name;
}
const std::string
extension (const std::string& name)
{
size_t b = name.find_last_of ('.');
if (b != std::string::npos)
return name.substr (b);
return name;
}
void
path_split (const std::string& path, paths& paths)
{
strings ps;
rld::split (ps, path, RLD_PATHSTR_SEPARATOR);
if (ps.size ())
{
for (strings::iterator psi = ps.begin ();
psi != ps.end ();
++psi)
{
if (check_directory (*psi))
paths.push_back (*psi);
}
}
}
void
path_join (const std::string& base, const std::string& part, std::string& joined)
{
if ((base[base.size () - 1] != RLD_PATH_SEPARATOR) &&
(part[0] != RLD_PATH_SEPARATOR))
joined = base + RLD_PATH_SEPARATOR + part;
else if ((base[base.size () - 1] == RLD_PATH_SEPARATOR) &&
(part[0] == RLD_PATH_SEPARATOR))
joined = base + &part[1];
else
joined = base + part;
}
void
path_join (const std::string& base, const paths& parts, std::string& joined)
{
joined = base;
for (paths::const_iterator pi = parts.begin ();
pi != parts.end ();
++pi)
{
path_join (joined, *pi, joined);
}
}
const std::string
path_abs (const std::string& path)
{
std::string apath;
if (path[0] == RLD_PATH_SEPARATOR)
{
apath = path;
}
else
{
char* buf = 0;
try
{
buf = new char[32 * 1024];
if (!::getcwd (buf, 32 * 1024))
{
delete [] buf;
throw rld::error (::strerror (errno), "get current working directory");
}
path_join (buf, path, apath);
delete [] buf;
}
catch (...)
{
delete [] buf;
throw;
}
}
strings ps;
strings aps;
rld::split (ps, apath, RLD_PATH_SEPARATOR);
for (strings::iterator psi = ps.begin ();
psi != ps.end ();
++psi)
{
const std::string& dir = *psi;
if (dir.empty () || dir == ".")
{
/* do nothing */
}
else if (dir == "..")
{
aps.pop_back ();
}
else
{
aps.push_back (dir);
}
}
return RLD_PATH_SEPARATOR + rld::join (aps, RLD_PATH_SEPARATOR_STR);
}
bool
check_file (const std::string& path)
{
struct stat sb;
if (::stat (path.c_str (), &sb) == 0)
if (S_ISREG (sb.st_mode))
return true;
return false;
}
bool
check_directory (const std::string& path)
{
struct stat sb;
if (::stat (path.c_str (), &sb) == 0)
if (S_ISDIR (sb.st_mode))
return true;
return false;
}
void
find_file (std::string& path, const std::string& name, paths& search_paths)
{
for (paths::iterator pi = search_paths.begin ();
pi != search_paths.end ();
++pi)
{
path_join (*pi, name, path);
if (check_file (path))
return;
}
path.clear ();
}
void
unlink (const std::string& path, bool not_present_error)
{
struct stat sb;
if (::stat (path.c_str (), &sb) >= 0)
{
if (!S_ISREG (sb.st_mode))
throw rld::error ("Not a regular file", "unlinking: " + path);
int r;
#if _WIN32
r = ::remove(path.c_str ());
#else
r = ::unlink (path.c_str ());
#endif
if (r < 0)
throw rld::error (::strerror (errno), "unlinking: " + path);
}
else
{
if (not_present_error)
throw rld::error ("Not found", "unlinking: " + path);
}
}
}
}
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