/***************************************************************************
- * Copyright (C) 2005-2013 by the Quassel Project *
+ * Copyright (C) 2005-2019 by the Quassel Project *
* devel@quassel-irc.org *
* *
* This program is free software; you can redistribute it and/or modify *
#include "util.h"
+#include <algorithm>
+#include <array>
+#include <utility>
+
#include <QCoreApplication>
+#include <QDateTime>
#include <QDebug>
-#include <QFile>
#include <QTextCodec>
+#include <QVector>
#include "quassel.h"
-class QMetaMethod;
-
// MIBenum values from http://www.iana.org/assignments/character-sets/character-sets.xml#table-character-sets-1
-static QList<int> utf8DetectionBlacklist = QList<int>()
- << 39 /* ISO-2022-JP */;
+static QList<int> utf8DetectionBlacklist = QList<int>() << 39 /* ISO-2022-JP */;
-QString nickFromMask(QString mask)
+QString nickFromMask(const QString& mask)
{
- return mask.section('!', 0, 0);
+ return mask.left(mask.indexOf('!'));
}
-
-QString userFromMask(QString mask)
+QString userFromMask(const QString& mask)
{
- QString userhost = mask.section('!', 1);
- if (userhost.isEmpty()) return QString();
- return userhost.section('@', 0, 0);
+ const int offset = mask.indexOf('!') + 1;
+ if (offset <= 0)
+ return {};
+ const int length = mask.indexOf('@', offset) - offset;
+ return mask.mid(offset, length >= 0 ? length : -1);
}
-
-QString hostFromMask(QString mask)
+QString hostFromMask(const QString& mask)
{
- QString userhost = mask.section('!', 1);
- if (userhost.isEmpty()) return QString();
- return userhost.section('@', 1);
+ const int excl = mask.indexOf('!');
+ if (excl < 0)
+ return {};
+ const int offset = mask.indexOf('@', excl + 1) + 1;
+ return offset > 0 && offset < mask.size() ? mask.mid(offset) : QString{};
}
-
-bool isChannelName(QString str)
+bool isChannelName(const QString& str)
{
- return QString("#&!+").contains(str[0]);
+ if (str.isEmpty())
+ return false;
+ static constexpr std::array<quint8, 4> prefixes{{'#', '&', '!', '+'}};
+ return std::any_of(prefixes.cbegin(), prefixes.cend(), [&str](quint8 c) { return c == str[0]; });
}
-
-QString stripFormatCodes(QString str)
+QString stripFormatCodes(QString message)
{
- str.remove(QRegExp("\x03(\\d\\d?(,\\d\\d?)?)?"));
- str.remove('\x02');
- str.remove('\x0f');
- str.remove('\x12');
- str.remove('\x16');
- str.remove('\x1d');
- str.remove('\x1f');
- return str;
+ static QRegExp regEx{"\x03(\\d\\d?(,\\d\\d?)?)?|\x04([\\da-fA-F]{6}(,[\\da-fA-F]{6})?)?|[\x02\x0f\x11\x12\x16\x1d\x1e\x1f]"};
+ return message.remove(regEx);
}
-
-QString stripAcceleratorMarkers(const QString &label_)
+QString stripAcceleratorMarkers(const QString& label_)
{
QString label = label_;
int p = 0;
- forever {
+ forever
+ {
p = label.indexOf('&', p);
if (p < 0 || p + 1 >= label.length())
break;
return label;
}
-
-QString decodeString(const QByteArray &input, QTextCodec *codec)
+QString decodeString(const QByteArray& input, QTextCodec* codec)
{
if (codec && utf8DetectionBlacklist.contains(codec->mibEnum()))
return codec->toUnicode(input);
// Q_ASSERT(sizeof(const char) == sizeof(quint8)); // In God we trust...
bool isUtf8 = true;
int cnt = 0;
- for (int i = 0; i < input.size(); i++) {
+ for (uchar c : input) {
if (cnt) {
// We check a part of a multibyte char. These need to be of the form 10yyyyyy.
- if ((input[i] & 0xc0) != 0x80) { isUtf8 = false; break; }
+ if ((c & 0xc0) != 0x80) {
+ isUtf8 = false;
+ break;
+ }
cnt--;
continue;
}
- if ((input[i] & 0x80) == 0x00) continue; // 7 bit is always ok
- if ((input[i] & 0xf8) == 0xf0) { cnt = 3; continue; } // 4-byte char 11110xxx 10yyyyyy 10zzzzzz 10vvvvvv
- if ((input[i] & 0xf0) == 0xe0) { cnt = 2; continue; } // 3-byte char 1110xxxx 10yyyyyy 10zzzzzz
- if ((input[i] & 0xe0) == 0xc0) { cnt = 1; continue; } // 2-byte char 110xxxxx 10yyyyyy
- isUtf8 = false; break; // 8 bit char, but not utf8!
+ if ((c & 0x80) == 0x00)
+ continue; // 7 bit is always ok
+ if ((c & 0xf8) == 0xf0) {
+ cnt = 3;
+ continue;
+ } // 4-byte char 11110xxx 10yyyyyy 10zzzzzz 10vvvvvv
+ if ((c & 0xf0) == 0xe0) {
+ cnt = 2;
+ continue;
+ } // 3-byte char 1110xxxx 10yyyyyy 10zzzzzz
+ if ((c & 0xe0) == 0xc0) {
+ cnt = 1;
+ continue;
+ } // 2-byte char 110xxxxx 10yyyyyy
+ isUtf8 = false;
+ break; // 8 bit char, but not utf8!
}
if (isUtf8 && cnt == 0) {
QString s = QString::fromUtf8(input);
- //qDebug() << "Detected utf8:" << s;
+ // qDebug() << "Detected utf8:" << s;
return s;
}
- //QTextCodec *codec = QTextCodec::codecForName(encoding.toAscii());
- if (!codec) return QString::fromAscii(input);
+ // QTextCodec *codec = QTextCodec::codecForName(encoding.toLatin1());
+ if (!codec)
+ return QString::fromLatin1(input);
return codec->toUnicode(input);
}
-
-uint editingDistance(const QString &s1, const QString &s2)
+uint editingDistance(const QString& s1, const QString& s2)
{
- uint n = s1.size()+1;
- uint m = s2.size()+1;
- QVector<QVector<uint> > matrix(n, QVector<uint>(m, 0));
+ uint n = s1.size() + 1;
+ uint m = s2.size() + 1;
+ QVector<QVector<uint>> matrix(n, QVector<uint>(m, 0));
for (uint i = 0; i < n; i++)
matrix[i][0] = i;
uint min;
for (uint i = 1; i < n; i++) {
for (uint j = 1; j < m; j++) {
- uint deleteChar = matrix[i-1][j] + 1;
- uint insertChar = matrix[i][j-1] + 1;
+ uint deleteChar = matrix[i - 1][j] + 1;
+ uint insertChar = matrix[i][j - 1] + 1;
if (deleteChar < insertChar)
min = deleteChar;
else
min = insertChar;
- if (s1[i-1] == s2[j-1]) {
- uint inheritChar = matrix[i-1][j-1];
+ if (s1[i - 1] == s2[j - 1]) {
+ uint inheritChar = matrix[i - 1][j - 1];
if (inheritChar < min)
min = inheritChar;
}
matrix[i][j] = min;
}
}
- return matrix[n-1][m-1];
+ return matrix[n - 1][m - 1];
}
-
QString secondsToString(int timeInSeconds)
{
- QList<QPair<int, QString> > timeUnit;
- timeUnit.append(qMakePair(365*24*60*60, QCoreApplication::translate("Quassel::secondsToString()", "year")));
- timeUnit.append(qMakePair(24*60*60, QCoreApplication::translate("Quassel::secondsToString()", "day")));
- timeUnit.append(qMakePair(60*60, QCoreApplication::translate("Quassel::secondsToString()", "h")));
- timeUnit.append(qMakePair(60, QCoreApplication::translate("Quassel::secondsToString()", "min")));
- timeUnit.append(qMakePair(1, QCoreApplication::translate("Quassel::secondsToString()", "sec")));
-
- QStringList returnString;
- for (int i = 0; i < timeUnit.size(); i++) {
- int n = timeInSeconds / timeUnit[i].first;
- if (n > 0) {
- returnString += QString("%1 %2").arg(QString::number(n), timeUnit[i].second);
+ static QVector<std::pair<int, QString>> timeUnit{std::make_pair(365 * 24 * 60 * 60,
+ QCoreApplication::translate("Quassel::secondsToString()", "year")),
+ std::make_pair(24 * 60 * 60,
+ QCoreApplication::translate("Quassel::secondsToString()", "day")),
+ std::make_pair(60 * 60, QCoreApplication::translate("Quassel::secondsToString()", "h")),
+ std::make_pair(60, QCoreApplication::translate("Quassel::secondsToString()", "min")),
+ std::make_pair(1, QCoreApplication::translate("Quassel::secondsToString()", "sec"))};
+
+ if (timeInSeconds != 0) {
+ QStringList returnString;
+ for (const auto& tu : timeUnit) {
+ int n = timeInSeconds / tu.first;
+ if (n > 0) {
+ returnString += QString("%1 %2").arg(QString::number(n), tu.second);
+ }
+ timeInSeconds = timeInSeconds % tu.first;
}
- timeInSeconds = timeInSeconds % timeUnit[i].first;
+ return returnString.join(", ");
}
- return returnString.join(", ");
-}
+ return QString("%1 %2").arg(QString::number(timeInSeconds), timeUnit.last().second);
+}
-QByteArray prettyDigest(const QByteArray &digest)
+QByteArray prettyDigest(const QByteArray& digest)
{
QByteArray hexDigest = digest.toHex().toUpper();
QByteArray prettyDigest;
}
return prettyDigest;
}
+
+QString formatCurrentDateTimeInString(const QString& formatStr)
+{
+ // Work on a copy of the string to avoid modifying the input string
+ QString formattedStr = QString(formatStr);
+
+ // Exit early if there's nothing to format
+ if (formattedStr.isEmpty())
+ return formattedStr;
+
+ // Find %%<text>%% in string. Replace inside text formatted to QDateTime with the current
+ // timestamp, using %%%% as an escape for multiple %% signs.
+ // For example:
+ // Simple: "All Quassel clients vanished from the face of the earth... %%hh:mm:ss%%"
+ // > Result: "All Quassel clients vanished from the face of the earth... 23:20:34"
+ // Complex: "Away since %%hh:mm%% on %%dd.MM%% - %%%% not here %%%%"
+ // > Result: "Away since 23:20 on 21.05 - %% not here %%"
+ //
+ // Match groups of double % signs - Some text %%inside here%%, and even %%%%:
+ // %%(.*)%%
+ // (...) marks a capturing group
+ // .* matches zero or more characters, not including newlines
+ // Note that '\' must be escaped as '\\'
+ // Helpful interactive website for debugging and explaining: https://regex101.com/
+ QRegExp regExpMatchTime("%%(.*)%%");
+
+ // Preserve the smallest groups possible to allow for multiple %%blocks%%
+ regExpMatchTime.setMinimal(true);
+
+ // NOTE: Move regExpMatchTime to a static regular expression if used anywhere that performance
+ // matters.
+
+ // Don't allow a runaway regular expression to loop for too long. This might not happen.. but
+ // when dealing with user input, better to be safe..?
+ int numIterations = 0;
+
+ // Find each group of %%text here%% starting from the beginning
+ int index = regExpMatchTime.indexIn(formattedStr);
+ int matchLength;
+ QString matchedFormat;
+ while (index >= 0 && numIterations < 512) {
+ // Get the total length of the matched expression
+ matchLength = regExpMatchTime.cap(0).length();
+ // Get the format string, e.g. "this text here" from "%%this text here%%"
+ matchedFormat = regExpMatchTime.cap(1);
+ // Check that there's actual characters inside. A quadruple % (%%%%) represents two %%
+ // signs.
+ if (matchedFormat.length() > 0) {
+ // Format the string according to the current date and time. Invalid time format
+ // strings are ignored.
+ formattedStr.replace(index, matchLength, QDateTime::currentDateTime().toString(matchedFormat));
+ // Subtract the length of the removed % signs
+ // E.g. "%%h:mm ap%%" turns into "h:mm ap", removing four % signs, thus -4. This is
+ // used below to determine how far to advance when looking for the next formatting code.
+ matchLength -= 4;
+ }
+ else if (matchLength == 4) {
+ // Remove two of the four percent signs, so '%%%%' escapes to '%%'
+ formattedStr.remove(index, 2);
+ // Subtract the length of the removed % signs, this time removing two % signs, thus -2.
+ matchLength -= 2;
+ }
+ else {
+ // If neither of these match, something went wrong. Don't modify it to be safe.
+ qDebug() << "Unexpected time format when parsing string, no matchedFormat, matchLength "
+ "should be 4, actually is"
+ << matchLength;
+ }
+
+ // Find the next group of %%text here%% starting from where the last group ended
+ index = regExpMatchTime.indexIn(formattedStr, index + matchLength);
+ numIterations++;
+ }
+
+ return formattedStr;
+}
+
+QString tryFormatUnixEpoch(const QString& possibleEpochDate, Qt::DateFormat dateFormat, bool useUTC)
+{
+ // Does the string resemble a Unix epoch? Parse as 64-bit time
+ qint64 secsSinceEpoch = possibleEpochDate.toLongLong();
+ if (secsSinceEpoch == 0) {
+ // Parsing either failed, or '0' was sent. No need to distinguish; either way, it's not
+ // useful as epoch.
+ // See https://doc.qt.io/qt-5/qstring.html#toLongLong
+ return possibleEpochDate;
+ }
+
+ // Time checks out, parse it
+ QDateTime date;
+#if QT_VERSION >= 0x050800
+ date.setSecsSinceEpoch(secsSinceEpoch);
+#else
+ // toSecsSinceEpoch() was added in Qt 5.8. Manually downconvert to seconds for now.
+ // See https://doc.qt.io/qt-5/qdatetime.html#toMSecsSinceEpoch
+ date.setMSecsSinceEpoch(secsSinceEpoch * 1000);
+#endif
+
+ // Return the localized date/time
+ if (useUTC) {
+ // Return UTC time
+ if (dateFormat == Qt::DateFormat::ISODate) {
+ // Replace the "T" date/time separator with " " for readability. This isn't quite the
+ // ISO 8601 spec (it specifies omitting the "T" entirely), but RFC 3339 allows this.
+ // Go with RFC 3339 for human readability that's still machine-parseable, too.
+ //
+ // Before: 2018-06-21T21:35:52Z
+ // After: 2018-06-21 21:35:52Z
+ // ..........^ (10th character)
+ //
+ // See https://en.wikipedia.org/wiki/ISO_8601#cite_note-32
+ // And https://www.ietf.org/rfc/rfc3339.txt
+ return date.toUTC().toString(dateFormat).replace(10, 1, " ");
+ }
+ else {
+ return date.toUTC().toString(dateFormat);
+ }
+ }
+ else if (dateFormat == Qt::DateFormat::ISODate) {
+ // Add in ISO local timezone information via special handling below
+ // formatDateTimeToOffsetISO() handles converting "T" to " "
+ return formatDateTimeToOffsetISO(date);
+ }
+ else {
+ // Return local time
+ return date.toString(dateFormat);
+ }
+}
+
+QString formatDateTimeToOffsetISO(const QDateTime& dateTime)
+{
+ if (!dateTime.isValid()) {
+ // Don't try to do anything with invalid date/time
+ return "formatDateTimeToISO() invalid date/time";
+ }
+
+ // Replace the "T" date/time separator with " " for readability. This isn't quite the ISO 8601
+ // spec (it specifies omitting the "T" entirely), but RFC 3339 allows this. Go with RFC 3339
+ // for human readability that's still machine-parseable, too.
+ //
+ // Before: 2018-08-22T18:43:10-05:00
+ // After: 2018-08-22 18:43:10-05:00
+ // ..........^ (10th character)
+ //
+ // See https://en.wikipedia.org/wiki/ISO_8601#cite_note-32
+ // And https://www.ietf.org/rfc/rfc3339.txt
+
+#if 0
+ // The expected way to get a UTC offset on ISO 8601 dates
+ // Remove the "T" date/time separator
+ return dateTime.toTimeSpec(Qt::OffsetFromUTC).toString(Qt::ISODate).replace(10, 1, " ");
+#else
+ // Work around Qt bug that converts to UTC instead of including timezone information
+ // See https://bugreports.qt.io/browse/QTBUG-26161
+ //
+ // NOTE: Despite the bug report marking as fixed in Qt 5.2.0 (QT_VERSION >= 0x050200), this
+ // still appears broken in Qt 5.5.1.
+ //
+ // Credit to "user362638" for the solution below, modified to fit Quassel's needs
+ // https://stackoverflow.com/questions/18750569/qdatetime-isodate-with-timezone
+
+ // Get the local and UTC time
+ QDateTime local = QDateTime(dateTime);
+ QDateTime utc = local.toUTC();
+ utc.setTimeSpec(Qt::LocalTime);
+
+ // Find the UTC offset
+ int utcOffset = utc.secsTo(local);
+
+ // Force the local time to follow this offset
+ local.setUtcOffset(utcOffset);
+ // Now the output should be correct
+ // Remove the "T" date/time separator
+ return local.toString(Qt::ISODate).replace(10, 1, " ");
+#endif
+}
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