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Makes a Data series be sorted (2)...
Makes a Data series be sorted (2) Implements sort() method
Alexandre Leroux - - Load All Authors

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AmdaResultParser.cpp
145 lines | 4.5 KiB | text/x-c | CppLexer
/ plugins / amda / src / AmdaResultParser.cpp
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Alexandre Leroux
Amda provider (3)...
 r351 #include "AmdaResultParser.h"
#include <Data/ScalarSeries.h>
#include <QDateTime>
#include <QFile>
Alexandre Leroux
Reads x-axis unit in result file
 r362 #include <QRegularExpression>
Alexandre Leroux
Amda provider (3)...
 r351
perrinel
Add the cmath include missing
 r368 #include <cmath>
Alexandre Leroux
Amda provider (3)...
 r351 Q_LOGGING_CATEGORY(LOG_AmdaResultParser, "AmdaResultParser")
namespace {
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Handles "Not found" error for AMDA result parser
 r412 /// Message in result file when the file was not found on server
const auto FILE_NOT_FOUND_MESSAGE = QStringLiteral("Not Found");
Alexandre Leroux
Amda provider (3)...
 r351 /// Format for dates in result files
const auto DATE_FORMAT = QStringLiteral("yyyy-MM-ddThh:mm:ss.zzz");
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Improves controls when reading results
 r363 /// Separator between values in a result line
const auto RESULT_LINE_SEPARATOR = QRegularExpression{QStringLiteral("\\s+")};
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Reads x-axis unit in result file
 r362 /// Regex to find unit in a line. Examples of valid lines:
/// ... - Units : nT - ...
/// ... -Units:nT- ...
/// ... -Units: m²- ...
/// ... - Units : m/s - ...
const auto UNIT_REGEX = QRegularExpression{QStringLiteral("-\\s*Units\\s*:\\s*(.+?)\\s*-")};
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Improves controls when reading results
 r363 /// Converts a string date to a double date
/// @return a double that represents the date in seconds, NaN if the string date can't be converted
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Amda provider (3)...
 r351 double doubleDate(const QString &stringDate) noexcept
{
auto dateTime = QDateTime::fromString(stringDate, DATE_FORMAT);
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Improves controls when reading results
 r363 return dateTime.isValid() ? (dateTime.toMSecsSinceEpoch() / 1000.)
: std::numeric_limits<double>::quiet_NaN();
Alexandre Leroux
Amda provider (3)...
 r351 }
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Reads x-axis unit in result file
 r362 /**
* Reads stream to retrieve x-axis unit
* @param stream the stream to read
* @return the unit that has been read in the stream, a default unit (time unit with no label) if an
* error occured during reading
*/
Unit readXAxisUnit(QTextStream &stream)
{
QString line{};
if (stream.readLineInto(&line)) {
auto match = UNIT_REGEX.match(line);
if (match.hasMatch()) {
return Unit{match.captured(1), true};
}
else {
qCWarning(LOG_AmdaResultParser())
<< QObject::tr("Can't read unit: invalid line %1").arg(line);
}
}
else {
qCWarning(LOG_AmdaResultParser()) << QObject::tr("Can't read unit: end of file");
}
// Error cases
return Unit{{}, true};
}
Alexandre Leroux
Improves controls when reading results
 r363 /**
* Reads stream to retrieve results
* @param stream the stream to read
* @return the pair of vectors x-axis data/values data that has been read in the stream
*/
QPair<QVector<double>, QVector<double> > readResults(QTextStream &stream)
{
auto xData = QVector<double>{};
auto valuesData = QVector<double>{};
QString line{};
while (stream.readLineInto(&line)) {
auto lineData = line.split(RESULT_LINE_SEPARATOR, QString::SkipEmptyParts);
if (lineData.size() == 2) {
// X : the data is converted from date to double (in secs)
auto x = doubleDate(lineData.at(0));
// Value
bool valueOk;
auto value = lineData.at(1).toDouble(&valueOk);
// Adds result only if x and value are valid
if (!std::isnan(x) && !std::isnan(value) && valueOk) {
xData.push_back(x);
valuesData.push_back(value);
}
else {
qCWarning(LOG_AmdaResultParser())
<< QObject::tr(
"Can't retrieve results from line %1: x and/or value are invalid")
.arg(line);
}
}
else {
qCWarning(LOG_AmdaResultParser())
<< QObject::tr("Can't retrieve results from line %1: invalid line").arg(line);
}
}
return qMakePair(std::move(xData), std::move(valuesData));
}
Alexandre Leroux
Amda provider (3)...
 r351 } // namespace
std::shared_ptr<IDataSeries> AmdaResultParser::readTxt(const QString &filePath) noexcept
{
QFile file{filePath};
if (!file.open(QFile::ReadOnly | QIODevice::Text)) {
qCCritical(LOG_AmdaResultParser())
<< QObject::tr("Can't retrieve AMDA data from file %1: %2")
.arg(filePath, file.errorString());
return nullptr;
}
QTextStream stream{&file};
Alexandre Leroux
Handles "Not found" error for AMDA result parser
 r412 // Checks if the file was found on the server
auto firstLine = stream.readLine();
if (firstLine.compare(FILE_NOT_FOUND_MESSAGE) == 0) {
qCCritical(LOG_AmdaResultParser())
<< QObject::tr("Can't retrieve AMDA data from file %1: file was not found on server")
.arg(filePath);
return nullptr;
}
// Ignore comments lines
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Amda provider (3)...
 r351 stream.readLine();
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Reads x-axis unit in result file
 r362 // Reads x-axis unit
auto xAxisUnit = readXAxisUnit(stream);
// Reads results
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Improves controls when reading results
 r363 auto results = readResults(stream);
Alexandre Leroux
Amda provider (3)...
 r351
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Improves controls when reading results
 r363 return std::make_shared<ScalarSeries>(std::move(results.first), std::move(results.second),
xAxisUnit, Unit{});
Alexandre Leroux
Amda provider (3)...
 r351 }