test build

src/librssguard/3rd-party/qdatetimeparser/qdatetimeparser.h

@@ -0,0 +1,261 @@
+// Copyright (C) 2021 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
+
+#ifndef QDATETIMEPARSER_P_H
+#define QDATETIMEPARSER_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include <QCalendar>
+#include <QDateTime>
+#include <QMetaType>
+
+#define QDATETIMEEDIT_TIME_MIN        QTime(0, 0)            // Prefer QDate::startOfDay()
+#define QDATETIMEEDIT_TIME_MAX        QTime(23, 59, 59, 999) // Prefer QDate::endOfDay()
+#define QDATETIMEEDIT_DATE_MIN        QDate(100, 1, 1)
+#define QDATETIMEEDIT_COMPAT_DATE_MIN QDate(1752, 9, 14)
+#define QDATETIMEEDIT_DATE_MAX        QDate(9999, 12, 31)
+#define QDATETIMEEDIT_DATE_INITIAL    QDate(2000, 1, 1)
+
+class QDateTimeParser {
+  public:
+    enum Context {
+      FromString,
+      DateTimeEdit
+    };
+    QDateTimeParser(QMetaType::Type t, Context ctx, const QCalendar& cal = QCalendar())
+      : parserType(t), context(ctx), calendar(cal) {
+      defaultLocale = QLocale::system();
+      first.type = FirstSection;
+      first.pos = -1;
+      first.count = -1;
+      first.zeroesAdded = 0;
+      last.type = LastSection;
+      last.pos = -1;
+      last.count = -1;
+      last.zeroesAdded = 0;
+      none.type = NoSection;
+      none.pos = -1;
+      none.count = -1;
+      none.zeroesAdded = 0;
+    }
+    virtual ~QDateTimeParser();
+
+    enum Section {
+      NoSection = 0x00000,
+      AmPmSection = 0x00001,
+      MSecSection = 0x00002,
+      SecondSection = 0x00004,
+      MinuteSection = 0x00008,
+      Hour12Section = 0x00010,
+      Hour24Section = 0x00020,
+      TimeZoneSection = 0x00040,
+      HourSectionMask = (Hour12Section | Hour24Section),
+      TimeSectionMask = (MSecSection | SecondSection | MinuteSection | HourSectionMask | AmPmSection | TimeZoneSection),
+
+      DaySection = 0x00100,
+      MonthSection = 0x00200,
+      YearSection = 0x00400,
+      YearSection2Digits = 0x00800,
+      YearSectionMask = YearSection | YearSection2Digits,
+      DayOfWeekSectionShort = 0x01000,
+      DayOfWeekSectionLong = 0x02000,
+      DayOfWeekSectionMask = DayOfWeekSectionShort | DayOfWeekSectionLong,
+      DaySectionMask = DaySection | DayOfWeekSectionMask,
+      DateSectionMask = DaySectionMask | MonthSection | YearSectionMask,
+
+      Internal = 0x10000,
+      FirstSection = 0x20000 | Internal,
+      LastSection = 0x40000 | Internal,
+      CalendarPopupSection = 0x80000 | Internal,
+
+      NoSectionIndex = -1,
+      FirstSectionIndex = -2,
+      LastSectionIndex = -3,
+      CalendarPopupIndex = -4
+    }; // extending qdatetimeedit.h's equivalent
+    Q_DECLARE_FLAGS(Sections, Section)
+
+    struct SectionNode {
+        Section type;
+        mutable int pos;
+        int count; // (used as Case(count) indicator for AmPmSection)
+        int zeroesAdded;
+
+        static QString name(Section s);
+        QString name() const {
+          return name(type);
+        }
+        QString format() const;
+        int maxChange() const;
+    };
+
+    enum State { // duplicated from QValidator
+      Invalid,
+      Intermediate,
+      Acceptable
+    };
+
+    struct StateNode {
+        StateNode() : state(Invalid), padded(0), conflicts(false) {}
+        StateNode(const QDateTime& val, State ok = Acceptable, int pad = 0, bool bad = false)
+          : value(val), state(ok), padded(pad), conflicts(bad) {}
+        QDateTime value;
+        State state;
+        int padded;
+        bool conflicts;
+    };
+
+    enum AmPm {
+      AmText,
+      PmText
+    };
+
+    StateNode parse(const QString& input, int position, const QDateTime& defaultValue, bool fixup) const;
+    bool fromString(const QString& text, QDate* date, QTime* time) const;
+    bool fromString(const QString& text, QDateTime* datetime) const;
+    bool parseFormat(QStringView format);
+
+    enum FieldInfoFlag {
+      Numeric = 0x01,
+      FixedWidth = 0x02,
+      AllowPartial = 0x04,
+      Fraction = 0x08
+    };
+    Q_DECLARE_FLAGS(FieldInfo, FieldInfoFlag)
+
+    FieldInfo fieldInfo(int index) const;
+
+    void setDefaultLocale(const QLocale& loc) {
+      defaultLocale = loc;
+    }
+    virtual QString displayText() const {
+      return m_text;
+    }
+    void setCalendar(const QCalendar& calendar);
+
+  private:
+    int sectionMaxSize(Section s, int count) const;
+    QString sectionText(const QString& text, int sectionIndex, int index) const;
+    StateNode scanString(const QDateTime& defaultValue, bool fixup) const;
+    struct ParsedSection {
+        int value;
+        int used;
+        int zeroes;
+        State state;
+        constexpr ParsedSection(State ok = Invalid, int val = 0, int read = 0, int zs = 0)
+          : value(ok == Invalid ? -1 : val), used(read), zeroes(zs), state(ok) {}
+    };
+    ParsedSection parseSection(const QDateTime& currentValue, int sectionIndex, int offset) const;
+    int findMonth(const QString& str1,
+                  int monthstart,
+                  int sectionIndex,
+                  int year,
+                  QString* monthName = nullptr,
+                  int* used = nullptr) const;
+    int findDay(const QString& str1,
+                int intDaystart,
+                int sectionIndex,
+                QString* dayName = nullptr,
+                int* used = nullptr) const;
+    ParsedSection findUtcOffset(QStringView str, int mode) const;
+    ParsedSection findTimeZoneName(QStringView str, const QDateTime& when) const;
+    ParsedSection findTimeZone(QStringView str, const QDateTime& when, int maxVal, int minVal, int mode) const;
+
+    enum AmPmFinder {
+      Neither = -1,
+      AM = 0,
+      PM = 1,
+      PossibleAM = 2,
+      PossiblePM = 3,
+      PossibleBoth = 4
+    };
+    AmPmFinder findAmPm(QString& str, int index, int* used = nullptr) const;
+
+    bool potentialValue(QStringView str, int min, int max, int index, const QDateTime& currentValue, int insert) const;
+    bool potentialValue(const QString& str, int min, int max, int index, const QDateTime& currentValue, int insert)
+      const {
+      return potentialValue(QStringView(str), min, max, index, currentValue, insert);
+    }
+
+    enum Case {
+      NativeCase,
+      LowerCase,
+      UpperCase
+    };
+
+    QString getAmPmText(AmPm ap, Case cs) const;
+
+    friend class QDTPUnitTestParser;
+
+  protected: // for the benefit of QDateTimeEditPrivate
+    int sectionSize(int index) const;
+    int sectionMaxSize(int index) const;
+    int sectionPos(int index) const;
+    int sectionPos(const SectionNode& sn) const;
+
+    const SectionNode& sectionNode(int index) const;
+    Section sectionType(int index) const;
+    QString sectionText(int sectionIndex) const;
+    int getDigit(const QDateTime& dt, int index) const;
+    bool setDigit(QDateTime& t, int index, int newval) const;
+
+    int absoluteMax(int index, const QDateTime& value = QDateTime()) const;
+    int absoluteMin(int index) const;
+
+    bool skipToNextSection(int section, const QDateTime& current, QStringView sectionText) const;
+    bool skipToNextSection(int section, const QDateTime& current, const QString& sectionText) const {
+      return skipToNextSection(section, current, QStringView(sectionText));
+    }
+    QString stateName(State s) const;
+
+    virtual QDateTime getMinimum() const;
+    virtual QDateTime getMaximum() const;
+    virtual int cursorPosition() const {
+      return -1;
+    }
+    virtual QLocale locale() const {
+      return defaultLocale;
+    }
+
+    mutable int currentSectionIndex = int(NoSectionIndex);
+    Sections display;
+    /*
+        This stores the most recently selected day.
+        It is useful when considering the following scenario:
+
+        1. Date is: 31/01/2000
+        2. User increments month: 29/02/2000
+        3. User increments month: 31/03/2000
+
+        At step 1, cachedDay stores 31. At step 2, the 31 is invalid for February, so the cachedDay is not updated.
+        At step 3, the month is changed to March, for which 31 is a valid day. Since 29 < 31, the day is set to
+       cachedDay. This is good for when users have selected their desired day and are scrolling up or down in the month
+       or year section and do not want smaller months (or non-leap years) to alter the day that they chose.
+    */
+    mutable int cachedDay = -1;
+    mutable QString m_text;
+    QList<SectionNode> sectionNodes;
+    SectionNode first, last, none, popup;
+    QStringList separators;
+    QString displayFormat;
+    QLocale defaultLocale;
+    QMetaType::Type parserType;
+    bool fixday = false;
+    Context context;
+    QCalendar calendar;
+};
+
+Q_DECLARE_OPERATORS_FOR_FLAGS(QDateTimeParser::Sections)
+Q_DECLARE_OPERATORS_FOR_FLAGS(QDateTimeParser::FieldInfo)
+
+#endif // QDATETIME_P_H

src/librssguard/CMakeLists.txt

@@ -446,6 +446,11 @@ list(APPEND SOURCES
   3rd-party/boolinq/boolinq.h
 )
 
+list(APPEND SOURCES
+  3rd-party/qdatetimeparser/qdatetimeparser.cpp
+  3rd-party/qdatetimeparser/qdatetimeparser.h
+)
+
 # Add sqlite.
 if(USE_SYSTEM_SQLITE)
   find_package(SQLite3)

src/librssguard/miscellaneous/application.cpp

@@ -10,6 +10,7 @@
 #include "3rd-party/sqlite/sqlite3.h"
 #endif
 
+#include "3rd-party/qdatetimeparser/qdatetimeparser.h"
 #include "core/feedsmodel.h"
 #include "dynamic-shortcuts/dynamicshortcuts.h"
 #include "exceptions/applicationexception.h"
@@ -96,6 +97,20 @@ Application::Application(const QString& id, int& argc, char** argv, const QStrin
 #endif
 #endif
 
+  /*
+  QString aa = "Fri, 12 Apr 2024 5:23:57 GMT";
+  QDateTimeParser par(QMetaType::QDateTime, QDateTimeParser::FromString, QCalendar());
+
+  par.setDefaultLocale(QLocale::c());
+
+  QString st = "ddd, dd MMM yyyy H:m:s";
+  bool parsed = par.parseFormat(st);
+  QDateTime dt;
+  par.fromString(aa, &dt);
+
+  // QDateTime tim = QDateTime::fromString(aa, form);
+  QString check = dt.toString();
+*/
   QString custom_ua;
 
   parseCmdArgumentsFromMyInstance(raw_cli_args, custom_ua);

src/librssguard/miscellaneous/textfactory.cpp

@@ -2,6 +2,8 @@
 
 #include "miscellaneous/textfactory.h"
 
+#include "3rd-party/boolinq/boolinq.h"
+#include "3rd-party/qdatetimeparser/qdatetimeparser.h"
 #include "3rd-party/sc/simplecrypt.h"
 #include "definitions/definitions.h"
 #include "exceptions/applicationexception.h"
@@ -104,6 +106,7 @@ QDateTime TextFactory::parseDateTime(const QString& date_time, QString* used_dt_
 
   // Iterate over patterns and check if input date/time matches the pattern.
   for (const QString& pattern : std::as_const(date_patterns)) {
+    /*
     QString input_date_chopped = input_date.left(pattern.size());
 
 #if QT_VERSION >= 0x060700 // Qt >= 6.7.0
@@ -111,6 +114,11 @@ QDateTime TextFactory::parseDateTime(const QString& date_time, QString* used_dt_
 #else
     dt = locale.toDateTime(input_date_chopped, pattern);
 #endif
+*/
+    QDateTimeParser par(QMetaType::QDateTime, QDateTimeParser::FromString, QCalendar());
+    par.setDefaultLocale(QLocale::c());
+    par.parseFormat(pattern);
+    par.fromString(input_date, &dt);
 
     if (dt.isValid()) {
       // Make sure that this date/time is considered UTC.
@@ -161,14 +169,22 @@ QDateTime TextFactory::parseDateTime(qint64 milis_from_epoch) {
 }
 
 QStringList TextFactory::dateTimePatterns() {
-  return QStringList() << QSL("yyyy-MM-ddTHH:mm:ss") << QSL("MMM dd yyyy hh:mm:ss") << QSL("MMM d yyyy hh:mm:ss")
-                       << QSL("ddd, dd MMM yyyy HH:mm:ss") << QSL("ddd, dd MMM yy HH:mm:ss")
-                       << QSL("ddd, dd MMM yyyy HH:mm") << QSL("ddd, d MMM yyyy HH:mm:ss")
-                       << QSL("dd MMM yyyy hh:mm:ss") << QSL("dd MMM yyyy") << QSL("yyyy-MM-dd HH:mm:ss.z")
-                       << QSL("yyyy-MM-ddThh:mm:ss") << QSL("yyyy-MM-ddThh:mm") << QSL("yyyy-MM-dd")
-                       << QSL("yyyy-MM-dd") << QSL("yyyy-MM") << QSL("d MMM yyyy HH:mm:ss") << QSL("yyyyMMddThhmmss")
-                       << QSL("yyyyMMdd") << QSL("yyyy") << QSL("hh:mm:ss") << QSL("h:m:s AP") << QSL("h:mm")
-                       << QSL("H:mm") << QSL("h:m") << QSL("h.m");
+  QStringList pat;
+
+  pat << QSL("yyyy-MM-ddTHH:mm:ss") << QSL("MMM dd yyyy hh:mm:ss") << QSL("MMM d yyyy hh:mm:ss")
+      << QSL("ddd, dd MMM yyyy HH:mm:ss") << QSL("ddd, dd MMM yy HH:mm:ss") << QSL("ddd, dd MMM yyyy HH:mm")
+      << QSL("ddd, d MMM yyyy HH:mm:ss") << QSL("dd MMM yyyy hh:mm:ss") << QSL("dd MMM yyyy")
+      << QSL("yyyy-MM-dd HH:mm:ss.z") << QSL("yyyy-MM-ddThh:mm:ss") << QSL("yyyy-MM-ddThh:mm") << QSL("yyyy-MM-dd")
+      << QSL("yyyy-MM-dd") << QSL("yyyy-MM") << QSL("d MMM yyyy HH:mm:ss") << QSL("yyyyMMddThhmmss") << QSL("yyyyMMdd")
+      << QSL("yyyy") << QSL("hh:mm:ss") << QSL("h:m:s AP") << QSL("h:mm") << QSL("H:mm") << QSL("h:m") << QSL("h.m");
+
+  auto std_pat = boolinq::from(pat)
+                   .orderBy([](const QString& str) {
+                     return str.size() * -1;
+                   })
+                   .toStdList();
+
+  return FROM_STD_LIST(QStringList, std_pat);
 }
 
 QString TextFactory::encrypt(const QString& text, quint64 key) {