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// Copyright (C) 2003 Davis E. King (davis@dlib.net)
// License: Boost Software License See LICENSE.txt for the full license.
#ifndef DLIB_DIR_NAV_KERNEL_2_CPp_
#define DLIB_DIR_NAV_KERNEL_2_CPp_
#include "../platform.h"
#ifdef POSIX
#include "dir_nav_kernel_2.h"
namespace dlib
{
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
// file object implementation
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
void file::
init (
const std::string& name
)
{
using namespace std;
char buf[PATH_MAX];
if (realpath(name.c_str(),buf) == 0)
{
// the file was not found
throw file_not_found("Unable to find file " + name);
}
state.full_name = buf;
string::size_type pos = state.full_name.find_last_of(directory::get_separator());
if (pos == string::npos)
{
// no valid full path has no separtor characters.
throw file_not_found("Unable to find file " + name);
}
state.name = state.full_name.substr(pos+1);
// now find the size of this file
struct stat64 buffer;
if (::stat64(state.full_name.c_str(), &buffer) ||
S_ISDIR(buffer.st_mode))
{
// there was an error during the call to stat64 or
// name is actually a directory
throw file_not_found("Unable to find file " + name);
}
else
{
state.file_size = static_cast<uint64>(buffer.st_size);
state.last_modified = std::chrono::system_clock::from_time_t(buffer.st_mtime);
#ifdef _BSD_SOURCE
state.last_modified += std::chrono::duration_cast<std::chrono::system_clock::duration>(std::chrono::nanoseconds(buffer.st_atim.tv_nsec));
#endif
}
}
// ----------------------------------------------------------------------------------------
bool file::
operator == (
const file& rhs
) const
{
using namespace std;
if (state.full_name.size() == 0 && rhs.state.full_name.size() == 0)
return true;
// These files might have different names but actually represent the same
// file due to the presence of symbolic links.
char buf[PATH_MAX];
string left, right;
if (realpath(state.full_name.c_str(),buf) == 0)
return false;
left = buf;
if (realpath(rhs.state.full_name.c_str(),buf) == 0)
return false;
right = buf;
return (left == right);
}
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
// directory object implementation
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
void directory::
init (
const std::string& name
)
{
using namespace std;
char buf[PATH_MAX];
if (realpath(name.c_str(),buf) == 0)
{
// the directory was not found
throw dir_not_found("Unable to find directory " + name);
}
state.full_name = buf;
const char sep = get_separator();
if (is_root_path(state.full_name) == false)
{
// ensure that thre is not a trialing separator
if (state.full_name[state.full_name.size()-1] == sep)
state.full_name.erase(state.full_name.size()-1);
// pick out the directory name
string::size_type pos = state.full_name.find_last_of(sep);
state.name = state.full_name.substr(pos+1);
}
else
{
// ensure that there is a trailing separator
if (state.full_name[state.full_name.size()-1] != sep)
state.full_name += sep;
}
struct stat64 buffer;
// now check that this is actually a valid directory
if (::stat64(state.full_name.c_str(),&buffer))
{
// the directory was not found
throw dir_not_found("Unable to find directory " + name);
}
else if (S_ISDIR(buffer.st_mode) == 0)
{
// It is not a directory
throw dir_not_found("Unable to find directory " + name);
}
}
// ----------------------------------------------------------------------------------------
char directory::
get_separator (
)
{
return '/';
}
// ----------------------------------------------------------------------------------------
bool directory::
operator == (
const directory& rhs
) const
{
using namespace std;
if (state.full_name.size() == 0 && rhs.state.full_name.size() == 0)
return true;
// These directories might have different names but actually represent the same
// directory due to the presence of symbolic links.
char buf[PATH_MAX];
string left, right;
if (realpath(state.full_name.c_str(),buf) == 0)
return false;
left = buf;
if (realpath(rhs.state.full_name.c_str(),buf) == 0)
return false;
right = buf;
return (left == right);
}
// ----------------------------------------------------------------------------------------
const directory directory::
get_parent (
) const
{
using namespace std;
// if *this is the root then just return *this
if (is_root())
{
return *this;
}
else
{
directory temp;
const char sep = get_separator();
string::size_type pos = state.full_name.find_last_of(sep);
temp.state.full_name = state.full_name.substr(0,pos);
if ( is_root_path(temp.state.full_name))
{
temp.state.full_name += sep;
}
else
{
pos = temp.state.full_name.find_last_of(sep);
if (pos != string::npos)
{
temp.state.name = temp.state.full_name.substr(pos+1);
}
else
{
temp.state.full_name += sep;
}
}
return temp;
}
}
// ----------------------------------------------------------------------------------------
bool directory::
is_root_path (
const std::string& path
) const
{
const char sep = get_separator();
if (path.size() == 1 && path[0] == sep)
return true;
else
return false;
}
// ----------------------------------------------------------------------------------------
}
#endif // POSIX
#endif // DLIB_DIR_NAV_KERNEL_2_CPp_
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