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Show error message when data logger fails to write #75

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Show error message when data logger fails to write #75

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5 changes: 5 additions & 0 deletions terrain_navigation/src/data_logger.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,7 @@

#include <fstream>
#include <iostream>
#include <cstring>

DataLogger::DataLogger() {}

Expand All @@ -53,6 +54,10 @@ void DataLogger::writeToFile(const std::string path) {
std::cout << "[DataLogger] Writing data to file! " << path << std::endl;
std::ofstream output_file;
output_file.open(path, std::ios::trunc);
if (output_file.fail()) {
std::cerr << "[DataLogger]: Failed to write to file: " << path << " with error " << strerror(errno) << std::endl;
return;
}
if (print_header_) {
for (auto key : keys_) {
output_file << key << field_seperator;
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