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|
/* +------------------------------------------------------------------------+
| Mobile Robot Programming Toolkit (MRPT) |
| https://www.mrpt.org/ |
| |
| Copyright (c) 2005-2023, Individual contributors, see AUTHORS file |
| See: https://www.mrpt.org/Authors - All rights reserved. |
| Released under BSD License. See: https://www.mrpt.org/License |
+------------------------------------------------------------------------+ */
/** Following functions investigate the directory manipulation capabilities in
* MRPT. Functions are called from the main function in the end of the script.
* See each function for the corresponding usage.
* See https://reference.mrpt.org/stable/group__filesystem.html on the
* documentation of the functions
*/
#include <mrpt/io/CFileOutputStream.h>
#include <mrpt/poses/CPose2D.h>
#include <mrpt/poses/CPosePDF.h>
#include <mrpt/system/datetime.h>
#include <mrpt/system/filesystem.h>
#include <iostream>
#include <sstream>
#include <string>
using namespace mrpt;
using namespace mrpt::poses;
using namespace mrpt::io;
using namespace mrpt::system;
using namespace std;
/** Create a directory
* Open and write some content in a file inside the directory
* If directory exists delete it altogether.
*/
void setupDirContents()
{
CFileOutputStream f;
string dir_name = "dir_a";
string file_name = "file_b";
CPose2D a_pose(1, 2, 40.0_deg);
if (!directoryExists(dir_name))
{
cout << "Creating directory... " << endl;
createDirectory(dir_name);
f.open(dir_name + "/" + file_name, OpenMode::TRUNCATE);
if (f.fileOpenCorrectly())
{ // checking for errors...
cout << "file was opened correctly" << endl;
// CSerializable form (binary)
f.printf("some random text ...\n");
f.printf("some more random text.\n");
f.printf("CPose2D: %s", a_pose.asString().c_str());
f.close();
}
else
{
cout << "file was NOT opened successfully" << endl;
return;
}
}
else
{
cout << "directory " << dir_name << " exists. " << endl;
cout << "removing directory altogether... " << endl;
deleteFilesInDirectory(
dir_name,
/* deleteDirectoryAsWell = */ true);
}
}
/** Initialize a directory along with some dummy content.
* Rename the directory and filenames inside it to
* ${PREVIOUS_FNAME}_renamed_datetime
*/
void renameDirContents()
{
string dir_name = "dir_b";
CFileOutputStream f;
string fname = "file";
stringstream ss_tmp;
// get the current datetime as a string - add it to the renamed fnames
TTimeStamp cur_time(getCurrentTime());
string cur_time_str = dateTimeToString(cur_time);
string cur_time_validstr(fileNameStripInvalidChars(cur_time_str));
string string_to_add = "_renamed_" + cur_time_validstr;
bool success; // flag for specifying whether an operation was successfully
// completed
if (!directoryExists(dir_name))
{
cout << "directory " << dir_name << " doesn't exist. " << endl;
cout << "Creating it.. " << endl;
success = createDirectory(dir_name);
if (!success)
{
THROW_EXCEPTION(
"There was an error creating the directory: " + dir_name);
}
}
// build the initial directory contents
for (int i = 0; i < 10; i++)
{
ss_tmp.str("");
ss_tmp << dir_name << "/" << fname << i;
f.open(ss_tmp.str(), OpenMode::TRUNCATE);
f.printf("dummy text in file...");
f.close();
}
// rename all the contents (of depth 1)
for (int i = 0; i < 10; i++)
{
ss_tmp.str("");
ss_tmp << dir_name << "/" << fname << i;
success = renameFile(
ss_tmp.str(),
/*new_name = */ ss_tmp.str() + string_to_add);
}
// finally rename the directory itself
cout << "Renaming directory " << dir_name << " to: " << dir_name
<< string_to_add << endl;
string* err_msg = nullptr; // flag for catching the error msg if any..
success = renameFile(dir_name, dir_name + string_to_add, err_msg);
if (success) { cout << "Directory renaming was successful!" << endl; }
else
{
THROW_EXCEPTION("Error while trying to rename directory: " + dir_name);
}
}
//
// MAIN
//
int main()
{
try
{
cout << "Running setupDirContents fun..." << endl;
cout << "------------------------------" << endl;
setupDirContents();
cout << "Press a key to continue..." << endl;
// char c=
getchar();
cout << "Running RenameDirContents fun..." << endl;
cout << "------------------------------" << endl;
renameDirContents();
return 0;
}
catch (const std::exception& e)
{
std::cerr << "MRPT error: " << mrpt::exception_to_str(e) << std::endl;
return -1;
}
}
|
