Files
rerun-io--rerun/examples/cpp/log_file/main.cpp
T
2026-07-13 13:05:14 +08:00

81 lines
2.9 KiB
C++

#include <filesystem>
#include <fstream>
#include <iostream>
#include <sstream>
#include <string>
#include <rerun.hpp>
#include <rerun/third_party/cxxopts.hpp>
int main(int argc, char** argv) {
// Create a new `RecordingStream` which sends data over gRPC to the viewer process.
const auto rec = rerun::RecordingStream("rerun_example_log_file");
cxxopts::Options options(
"rerun_example_log_file",
"Demonstrates how to log any file from the SDK using the `Importer` machinery."
);
// clang-format off
options.add_options()
("h,help", "Print usage")
// Rerun
("spawn", "Start a new Rerun Viewer process and feed it data in real-time")
("connect", "Connects and sends the logged data to a remote Rerun viewer")
("save", "Log data to an rrd file", cxxopts::value<std::string>())
("stdout", "Log data to standard output, to be piped into a Rerun Viewer")
// Example
("from-contents", "Log the contents of the file directly (files only -- not supported by external loaders)", cxxopts::value<bool>()->default_value("false"))
("filepaths", "The filepaths to be loaded and logged", cxxopts::value<std::vector<std::string>>())
;
// clang-format on
options.parse_positional({"filepaths"});
auto args = options.parse(argc, argv);
if (args.count("help")) {
std::cout << options.help() << std::endl;
exit(0);
}
// TODO(#4602): need common rerun args helper library
if (args["spawn"].as<bool>()) {
rec.spawn().exit_on_failure();
} else if (args["connect"].as<bool>()) {
rec.connect_grpc().exit_on_failure();
} else if (args["stdout"].as<bool>()) {
rec.to_stdout().exit_on_failure();
} else if (args.count("save")) {
rec.save(args["save"].as<std::string>()).exit_on_failure();
} else {
rec.spawn().exit_on_failure();
}
const auto from_contents = args["from-contents"].as<bool>();
if (args.count("filepaths")) {
const auto filepaths = args["filepaths"].as<std::vector<std::string>>();
for (const auto& filepath : filepaths) {
if (!from_contents) {
// Either log the file using its path…
rec.log_file_from_path(filepath, "log_file_example");
} else {
// …or using its contents if you already have them loaded for some reason.
if (std::filesystem::is_regular_file(filepath)) {
std::ifstream file(filepath);
std::stringstream contents;
contents << file.rdbuf();
const auto data = contents.str();
rec.log_file_from_contents(
filepath,
reinterpret_cast<const std::byte*>(data.c_str()),
data.size(),
"log_file_example"
);
}
}
}
}
}