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QString: Add functions isUpper and isLower

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[ChangeLog][QtCore][QString] Added the functions QString::isUpper
and QString::isLower to check if a string contains only uppercase
or only lowercase letters.

Change-Id: I12d3a47d4605eb4514842071e80a9ba0723d4e01
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This commit is contained in:
Andre Hartmann 2017-07-26 20:46:53 +02:00 committed by André Hartmann
parent 8692f12e89
commit bcd6de15ac
3 changed files with 89 additions and 0 deletions
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44
src/corelib/tools/qstring.cpp
View File

@ -4896,6 +4896,50 @@ bool QString::endsWith(QChar c, Qt::CaseSensitivity cs) const
return qt_ends_with(*this, c, cs);
}
/*!
Returns \c true if the string only contains uppercase letters,
otherwise returns \c false.
\since 5.12
\sa QChar::isUpper(), isLower()
*/
bool QString::isUpper() const
{
if (isEmpty())
return false;
const QChar *d = data();
for (int i = 0, max = size(); i < max; ++i) {
if (!d[i].isUpper())
return false;
}
return true;
}
/*!
Returns \c true if the string only contains lowercase letters,
otherwise returns \c false.
\since 5.12
\sa QChar::isLower(), isUpper()
*/
bool QString::isLower() const
{
if (isEmpty())
return false;
const QChar *d = data();
for (int i = 0, max = size(); i < max; ++i) {
if (!d[i].isLower())
return false;
}
return true;
}
static QByteArray qt_convert_to_latin1(QStringView string);
QByteArray QString::toLatin1_helper(const QString &string)

3
src/corelib/tools/qstring.h
View File

@ -409,6 +409,9 @@ public:
bool endsWith(QLatin1String s, Qt::CaseSensitivity cs = Qt::CaseSensitive) const;
bool endsWith(QChar c, Qt::CaseSensitivity cs = Qt::CaseSensitive) const;
bool isUpper() const;
bool isLower() const;
Q_REQUIRED_RESULT QString leftJustified(int width, QChar fill = QLatin1Char(' '), bool trunc = false) const;
Q_REQUIRED_RESULT QString rightJustified(int width, QChar fill = QLatin1Char(' '), bool trunc = false) const;

42
tests/auto/corelib/tools/qstring/tst_qstring.cpp
View File

@ -452,6 +452,8 @@ private slots:
void trimmed();
void toUpper();
void toLower();
void isUpper();
void isLower();
void toCaseFolded();
void rightJustified();
void leftJustified();
@ -2316,6 +2318,46 @@ void tst_QString::toLower()
#endif
}
void tst_QString::isUpper()
{
QVERIFY(!QString().isUpper());
QVERIFY(!QString("").isUpper());
QVERIFY(QString("TEXT").isUpper());
QVERIFY(!QString("text").isUpper());
QVERIFY(!QString("Text").isUpper());
QVERIFY(!QString("tExt").isUpper());
QVERIFY(!QString("teXt").isUpper());
QVERIFY(!QString("texT").isUpper());
QVERIFY(!QString("TExt").isUpper());
QVERIFY(!QString("teXT").isUpper());
QVERIFY(!QString("tEXt").isUpper());
QVERIFY(!QString("tExT").isUpper());
QVERIFY(!QString("@ABYZ[").isUpper());
QVERIFY(!QString("@abyz[").isUpper());
QVERIFY(!QString("`ABYZ{").isUpper());
QVERIFY(!QString("`abyz{").isUpper());
}
void tst_QString::isLower()
{
QVERIFY(!QString().isLower());
QVERIFY(!QString("").isLower());
QVERIFY(QString("text").isLower());
QVERIFY(!QString("Text").isLower());
QVERIFY(!QString("tExt").isLower());
QVERIFY(!QString("teXt").isLower());
QVERIFY(!QString("texT").isLower());
QVERIFY(!QString("TExt").isLower());
QVERIFY(!QString("teXT").isLower());
QVERIFY(!QString("tEXt").isLower());
QVERIFY(!QString("tExT").isLower());
QVERIFY(!QString("TEXT").isLower());
QVERIFY(!QString("@ABYZ[").isLower());
QVERIFY(!QString("@abyz[").isLower());
QVERIFY(!QString("`ABYZ{").isLower());
QVERIFY(!QString("`abyz{").isLower());
}
void tst_QString::toCaseFolded()
{
QCOMPARE( QString().toCaseFolded(), QString() );