73 lines
2.0 KiB
C++
73 lines
2.0 KiB
C++
#ifndef BSP_Q7S_MEMORY_SCRATCHAPI_H_
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#define BSP_Q7S_MEMORY_SCRATCHAPI_H_
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#include "fsfw/returnvalues/HasReturnvaluesIF.h"
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#include "fsfw/serviceinterface/ServiceInterface.h"
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#include "linux/utility/utility.h"
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#include <iostream>
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#include <fstream>
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#include <sstream>
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#include <type_traits>
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#include <cstdlib>
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/**
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* @brief API for the scratch buffer
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*/
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namespace scratch {
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static constexpr char PREFERED_SDC_KEY[] = "PREFSD";
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namespace {
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static uint8_t counter = 0;
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}
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template<typename T, class = typename std::enable_if<std::is_integral<T>::value>::type>
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inline ReturnValue_t writeNumber(std::string name, T num) noexcept {
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std::ostringstream oss;
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oss << "xsc_scratch write " << name << " " << num;
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int result = std::system(oss.str().c_str());
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if(result != 0) {
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utility::handleSystemError(result, "scratch::writeNumber");
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return HasReturnvaluesIF::RETURN_FAILED;
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}
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return HasReturnvaluesIF::RETURN_OK;
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}
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template<typename T, class = typename std::enable_if<std::is_integral<T>::value>::type>
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inline ReturnValue_t readNumber(std::string name, T& num) noexcept {
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using namespace std;
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string filename = "/tmp/sro" + std::to_string(counter++);
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ostringstream oss;
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oss << "xsc_scratch read " << name << " > " << filename;
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int result = std::system(oss.str().c_str());
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if(result != 0) {
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utility::handleSystemError(result, "scratch::writeNumber");
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return HasReturnvaluesIF::RETURN_FAILED;
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}
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ifstream file(filename);
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string line;
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if (not std::getline(file, line)) {
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return HasReturnvaluesIF::RETURN_FAILED;
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}
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size_t pos = line.find("=");
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std::string valueAsString = line.substr(pos + 1);
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try {
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num = std::stoi(valueAsString);
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}
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catch(std::invalid_argument& e) {
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sif::warning << "scratch::readNumber: stoi call failed with " << e.what() << std::endl;
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}
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std::remove(filename.c_str());
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return HasReturnvaluesIF::RETURN_OK;
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}
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ReturnValue_t writeString(std::string name, std::string string);
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}
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#endif /* BSP_Q7S_MEMORY_SCRATCHAPI_H_ */
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