QStringMatcher 类保持可以在 Unicode 字符串中快速匹配的字符序列。 更多...
| 头： | #include <QStringMatcher> |
| CMake: |
find_package(Qt6 COMPONENTS Core REQUIRED)
target_link_libraries(mytarget PRIVATE Qt6::Core) |
| qmake: | QT += core |
| QStringMatcher (const QStringMatcher & other ) | |
| QStringMatcher (QStringView pattern , Qt::CaseSensitivity cs = Qt::CaseSensitive) | |
| QStringMatcher (const QChar * uc , qsizetype length , Qt::CaseSensitivity cs = Qt::CaseSensitive) | |
| QStringMatcher (const QString & pattern , Qt::CaseSensitivity cs = Qt::CaseSensitive) | |
| QStringMatcher () | |
| QStringMatcher & | operator= (const QStringMatcher & other ) |
| ~QStringMatcher () | |
| Qt::CaseSensitivity | caseSensitivity () const |
| qsizetype | indexIn (const QString & str , qsizetype from = 0) const |
| qsizetype | indexIn (const QChar * str , qsizetype length , qsizetype from = 0) const |
| qsizetype | indexIn (QStringView str , qsizetype from = 0) const |
| QString | pattern () const |
| void | setCaseSensitivity (Qt::CaseSensitivity cs ) |
| void | setPattern (const QString & pattern ) |
This class is useful when you have a sequence of QChar s that you want to repeatedly match against some strings (perhaps in a loop), or when you want to search for the same sequence of characters multiple times in the same string. Using a matcher object and indexIn () is faster than matching a plain QString with QString::indexOf () if repeated matching takes place. This class offers no benefit if you are doing one-off string matches.
Create the QStringMatcher with the QString you want to search for. Then call indexIn () on the QString that you want to search.
另请参阅 QString , QByteArrayMatcher ，和 QRegularExpression .
拷贝 other string matcher to this string matcher.
[since 5.14]
QStringMatcher::
QStringMatcher
(
QStringView
pattern
,
Qt::CaseSensitivity
cs
= Qt::CaseSensitive)
Constructs a string matcher that will search for pattern , with case sensitivity cs .
调用 indexIn () to perform a search.
该函数在 Qt 5.14 引入。
Constructs a string matcher that will search for the pattern referred to by uc 采用给定 length and case sensitivity specified by cs .
Constructs a string matcher that will search for pattern , with case sensitivity cs .
调用 indexIn () to perform a search.
Constructs an empty string matcher that won't match anything. Call setPattern () to give it a pattern to match.
赋值 other string matcher to this string matcher.
Destroys the string matcher.
Returns the case sensitivity setting for this string matcher.
另请参阅 setCaseSensitivity ().
Searches the string str from character position from (default 0, i.e. from the first character), for the string pattern () that was set in the constructor or in the most recent call to setPattern (). Returns the position where the pattern () matched in str , or -1 if no match was found.
另请参阅 setPattern () 和 setCaseSensitivity ().
Searches the string starting at str (of length length ) from character position from (default 0, i.e. from the first character), for the string pattern () that was set in the constructor or in the most recent call to setPattern (). Returns the position where the pattern () matched in str , or -1 if no match was found.
另请参阅 setPattern () 和 setCaseSensitivity ().
[since 5.14]
qsizetype
QStringMatcher::
indexIn
(
QStringView
str
,
qsizetype
from
= 0) const
Searches the string str from character position from (default 0, i.e. from the first character), for the string pattern () that was set in the constructor or in the most recent call to setPattern (). Returns the position where the pattern () matched in str , or -1 if no match was found.
该函数在 Qt 5.14 引入。
另请参阅 setPattern () 和 setCaseSensitivity ().
Returns the string pattern that this string matcher will search for.
另请参阅 setPattern ().
Sets the case sensitivity setting of this string matcher to cs .
另请参阅 caseSensitivity (), setPattern ()，和 indexIn ().
Sets the string that this string matcher will search for to pattern .
另请参阅 pattern (), setCaseSensitivity ()，和 indexIn ().