diff options
Diffstat (limited to 'ml/dlib/dlib/dir_nav/dir_nav_kernel_2.cpp')
| -rw-r--r-- | ml/dlib/dlib/dir_nav/dir_nav_kernel_2.cpp | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/ml/dlib/dlib/dir_nav/dir_nav_kernel_2.cpp b/ml/dlib/dlib/dir_nav/dir_nav_kernel_2.cpp new file mode 100644 index 000000000..be97b984c --- /dev/null +++ b/ml/dlib/dlib/dir_nav/dir_nav_kernel_2.cpp @@ -0,0 +1,254 @@ +// 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_ + |