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Improves AMDA result parsing...
Alexandre Leroux -
r492:41e897ecff03
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@@ -1,147 +1,152
1 1 #include "AmdaResultParser.h"
2 2
3 3 #include <Common/DateUtils.h>
4 4 #include <Data/ScalarSeries.h>
5 5
6 6 #include <QDateTime>
7 7 #include <QFile>
8 8 #include <QRegularExpression>
9 9
10 10 #include <cmath>
11 11
12 12 Q_LOGGING_CATEGORY(LOG_AmdaResultParser, "AmdaResultParser")
13 13
14 14 namespace {
15 15
16 16 /// Message in result file when the file was not found on server
17 17 const auto FILE_NOT_FOUND_MESSAGE = QStringLiteral("Not Found");
18 18
19 19 /// Format for dates in result files
20 20 const auto DATE_FORMAT = QStringLiteral("yyyy-MM-ddThh:mm:ss.zzz");
21 21
22 22 /// Separator between values in a result line
23 23 const auto RESULT_LINE_SEPARATOR = QRegularExpression{QStringLiteral("\\s+")};
24 24
25 25 /// Regex to find unit in a line. Examples of valid lines:
26 26 /// ... - Units : nT - ...
27 27 /// ... -Units:nT- ...
28 28 /// ... -Units: mΒ²- ...
29 29 /// ... - Units : m/s - ...
30 30 const auto UNIT_REGEX = QRegularExpression{QStringLiteral("-\\s*Units\\s*:\\s*(.+?)\\s*-")};
31 31
32 32 /// Converts a string date to a double date
33 33 /// @return a double that represents the date in seconds, NaN if the string date can't be converted
34 34 double doubleDate(const QString &stringDate) noexcept
35 35 {
36 36 auto dateTime = QDateTime::fromString(stringDate, DATE_FORMAT);
37 37 dateTime.setTimeSpec(Qt::UTC);
38 38 return dateTime.isValid() ? DateUtils::secondsSinceEpoch(dateTime)
39 39 : std::numeric_limits<double>::quiet_NaN();
40 40 }
41 41
42 /// Checks if a line is a comment line
43 bool isCommentLine(const QString &line)
44 {
45 return line.startsWith("#");
46 }
47
42 48 /**
43 49 * Reads stream to retrieve x-axis unit
44 50 * @param stream the stream to read
45 51 * @return the unit that has been read in the stream, a default unit (time unit with no label) if an
46 52 * error occured during reading
47 53 */
48 54 Unit readXAxisUnit(QTextStream &stream)
49 55 {
50 56 QString line{};
51 57
52 if (stream.readLineInto(&line)) {
58 // Searches unit in the comment lines
59 while (stream.readLineInto(&line) && isCommentLine(line)) {
53 60 auto match = UNIT_REGEX.match(line);
54 61 if (match.hasMatch()) {
55 62 return Unit{match.captured(1), true};
56 63 }
57 else {
58 qCWarning(LOG_AmdaResultParser())
59 << QObject::tr("Can't read unit: invalid line %1").arg(line);
60 }
61 }
62 else {
63 qCWarning(LOG_AmdaResultParser()) << QObject::tr("Can't read unit: end of file");
64 64 }
65 65
66 qCWarning(LOG_AmdaResultParser()) << QObject::tr("The unit could not be found in the file");
67
66 68 // Error cases
67 69 return Unit{{}, true};
68 70 }
69 71
70 72 /**
71 73 * Reads stream to retrieve results
72 74 * @param stream the stream to read
73 75 * @return the pair of vectors x-axis data/values data that has been read in the stream
74 76 */
75 77 QPair<QVector<double>, QVector<double> > readResults(QTextStream &stream)
76 78 {
77 79 auto xData = QVector<double>{};
78 80 auto valuesData = QVector<double>{};
79 81
80 82 QString line{};
83
81 84 while (stream.readLineInto(&line)) {
85 // Ignore comment lines
86 if (!isCommentLine(line)) {
82 87 auto lineData = line.split(RESULT_LINE_SEPARATOR, QString::SkipEmptyParts);
83 88 if (lineData.size() == 2) {
84 89 // X : the data is converted from date to double (in secs)
85 90 auto x = doubleDate(lineData.at(0));
86 91
87 92 // Value
88 93 bool valueOk;
89 94 auto value = lineData.at(1).toDouble(&valueOk);
90 95
91 96 // Adds result only if x and value are valid
92 97 if (!std::isnan(x) && !std::isnan(value) && valueOk) {
93 98 xData.push_back(x);
94 99 valuesData.push_back(value);
95 100 }
96 101 else {
97 102 qCWarning(LOG_AmdaResultParser())
98 103 << QObject::tr(
99 104 "Can't retrieve results from line %1: x and/or value are invalid")
100 105 .arg(line);
101 106 }
102 107 }
103 108 else {
104 109 qCWarning(LOG_AmdaResultParser())
105 110 << QObject::tr("Can't retrieve results from line %1: invalid line").arg(line);
106 111 }
107 112 }
113 }
108 114
109 115 return qMakePair(std::move(xData), std::move(valuesData));
110 116 }
111 117
112 118 } // namespace
113 119
114 120 std::shared_ptr<IDataSeries> AmdaResultParser::readTxt(const QString &filePath) noexcept
115 121 {
116 122 QFile file{filePath};
117 123
118 124 if (!file.open(QFile::ReadOnly | QIODevice::Text)) {
119 125 qCCritical(LOG_AmdaResultParser())
120 126 << QObject::tr("Can't retrieve AMDA data from file %1: %2")
121 127 .arg(filePath, file.errorString());
122 128 return nullptr;
123 129 }
124 130
125 131 QTextStream stream{&file};
126 132
127 133 // Checks if the file was found on the server
128 134 auto firstLine = stream.readLine();
129 135 if (firstLine.compare(FILE_NOT_FOUND_MESSAGE) == 0) {
130 136 qCCritical(LOG_AmdaResultParser())
131 137 << QObject::tr("Can't retrieve AMDA data from file %1: file was not found on server")
132 138 .arg(filePath);
133 139 return nullptr;
134 140 }
135 141
136 // Ignore comments lines
137 stream.readLine();
138
139 142 // Reads x-axis unit
143 stream.seek(0); // returns to the beginning of the file
140 144 auto xAxisUnit = readXAxisUnit(stream);
141 145
142 146 // Reads results
147 stream.seek(0); // returns to the beginning of the file
143 148 auto results = readResults(stream);
144 149
145 150 return std::make_shared<ScalarSeries>(std::move(results.first), std::move(results.second),
146 151 xAxisUnit, Unit{});
147 152 }
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