tv_rename/unix/filesystem.cpp

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#include "../filesystem.hpp"
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#include <sys/stat.h>
FSLib::Directory::Directory( const string &path_ ) : dir_path( path_ ) {}
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FSLib::Directory::Iterator::Iterator( const Directory &d_ )
: d( opendir( d_.path() ) ) {
current_entry = readdir( d );
if ( current_entry != nullptr &&
( !strcmp( current_entry->d_name, "." ) ||
!strcmp( current_entry->d_name, ".." ) ) )
++( *this );
}
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FSLib::Directory::Iterator::Iterator( const Directory &d_,
const struct dirent *current_entry_ )
: d( opendir( d_.path() ) ), current_entry( current_entry_ ) {}
FSLib::Directory::Iterator::~Iterator() {
closedir( d );
}
bool FSLib::exists( const string &path ) {
struct stat path_stat;
return stat( path.c_str(), &path_stat ) == 0;
}
string FSLib::canonical( const string &path ) {
char_t *canonical_path = new char_t[PATH_MAX];
auto failed = realpath( path.c_str(), canonical_path ) == nullptr;
if ( failed ) {
delete[] canonical_path;
return string();
}
string canonical_string{ canonical_path };
delete[] canonical_path;
return canonical_string;
}
bool FSLib::isDirectory( const string &path ) {
struct stat path_stat;
stat( path.c_str(), &path_stat );
return S_ISDIR( path_stat.st_mode );
}
bool FSLib::rename( const string &file_a, const string &file_b ) {
return ::rename( file_a.c_str(), file_b.c_str() ) == 0;
}
FSLib::Directory::iterator FSLib::Directory::end() {
return Iterator( *this, nullptr );
}
FSLib::Directory::const_iterator FSLib::Directory::end() const {
return Iterator( *this, nullptr );
}
char_t const *FSLib::Directory::Iterator::operator*() const {
return current_entry->d_name;
}
FSLib::Directory::Iterator &FSLib::Directory::Iterator::operator++() {
if ( current_entry == nullptr )
return *this;
current_entry = readdir( d );
// skip . and ..
if ( current_entry != nullptr &&
( !strcmp( current_entry->d_name, "." ) ||
!strcmp( current_entry->d_name, ".." ) ) )
return operator++();
return *this;
}
bool FSLib::Directory::Iterator::operator==( const Iterator &i_other ) const {
return i_other.current_entry == current_entry;
}