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diff --git a/doc/man/man3/qregexpvalidator.3qt b/doc/man/man3/qregexpvalidator.3qt new file mode 100644 index 0000000..d73a07a --- /dev/null +++ b/doc/man/man3/qregexpvalidator.3qt @@ -0,0 +1,179 @@ +'\" t +.TH QRegExpValidator 3qt "2 February 2007" "Trolltech AS" \" -*- nroff -*- +.\" Copyright 1992-2007 Trolltech ASA. All rights reserved. See the +.\" license file included in the distribution for a complete license +.\" statement. +.\" +.ad l +.nh +.SH NAME +QRegExpValidator \- Used to check a string against a +.SH SYNOPSIS +\fC#include <qvalidator.h>\fR +.PP +Inherits QValidator. +.PP +.SS "Public Members" +.in +1c +.ti -1c +.BI "\fBQRegExpValidator\fR ( QObject * parent, const char * name = 0 )" +.br +.ti -1c +.BI "\fBQRegExpValidator\fR ( const QRegExp & rx, QObject * parent, const char * name = 0 )" +.br +.ti -1c +.BI "\fB~QRegExpValidator\fR ()" +.br +.ti -1c +.BI "virtual QValidator::State \fBvalidate\fR ( QString & input, int & pos ) const" +.br +.ti -1c +.BI "void \fBsetRegExp\fR ( const QRegExp & rx )" +.br +.ti -1c +.BI "const QRegExp & \fBregExp\fR () const" +.br +.in -1c +.SH DESCRIPTION +The QRegExpValidator class is used to check a string against a regular expression. +.PP +QRegExpValidator contains a regular expression, "regexp", used to determine whether an input string is Acceptable, Intermediate or Invalid. +.PP +The regexp is treated as if it begins with the start of string assertion, \fB^\fR, and ends with the end of string assertion \fB$\fR so the match is against the entire input string, or from the given position if a start position greater than zero is given. +.PP +For a brief introduction to Qt's regexp engine see QRegExp. +.PP +Example of use: +.PP +.nf +.br + // regexp: optional '-' followed by between 1 and 3 digits +.br + QRegExp rx( "-?\\\\d{1,3}" ); +.br + QValidator* validator = new QRegExpValidator( rx, this ); +.br +.br + QLineEdit* edit = new QLineEdit( this ); +.br + edit->setValidator( validator ); +.br +.fi +.PP +Below we present some examples of validators. In practice they would normally be associated with a widget as in the example above. +.PP +.nf +.br + // integers 1 to 9999 +.br + QRegExp rx( "[1-9]\\\\d{0,3}" ); +.br + // the validator treats the regexp as "^[1-9]\\\\d{0,3}$" +.br + QRegExpValidator v( rx, 0 ); +.br + QString s; +.br + int pos = 0; +.br +.br + s = "0"; v.validate( s, pos ); // returns Invalid +.br + s = "12345"; v.validate( s, pos ); // returns Invalid +.br + s = "1"; v.validate( s, pos ); // returns Acceptable +.br +.br + rx.setPattern( "\\\\S+" ); // one or more non-whitespace characters +.br + v.setRegExp( rx ); +.br + s = "myfile.txt"; v.validate( s, pos ); // Returns Acceptable +.br + s = "my file.txt"; v.validate( s, pos ); // Returns Invalid +.br +.br + // A, B or C followed by exactly five digits followed by W, X, Y or Z +.br + rx.setPattern( "[A-C]\\\\d{5}[W-Z]" ); +.br + v.setRegExp( rx ); +.br + s = "a12345Z"; v.validate( s, pos ); // Returns Invalid +.br + s = "A12345Z"; v.validate( s, pos ); // Returns Acceptable +.br + s = "B12"; v.validate( s, pos ); // Returns Intermediate +.br +.br + // match most 'readme' files +.br + rx.setPattern( "read\\\\S?me(\\.(txt|asc|1st))?" ); +.br + rx.setCaseSensitive( FALSE ); +.br + v.setRegExp( rx ); +.br + s = "readme"; v.validate( s, pos ); // Returns Acceptable +.br + s = "README.1ST"; v.validate( s, pos ); // Returns Acceptable +.br + s = "read me.txt"; v.validate( s, pos ); // Returns Invalid +.br + s = "readm"; v.validate( s, pos ); // Returns Intermediate +.br +.fi +.PP +See also QRegExp, QIntValidator, QDoubleValidator, and Miscellaneous Classes. +.SH MEMBER FUNCTION DOCUMENTATION +.SH "QRegExpValidator::QRegExpValidator ( QObject * parent, const char * name = 0 )" +Constructs a validator that accepts any string (including an empty one) as valid. The object's parent is \fIparent\fR and its name is \fIname\fR. +.SH "QRegExpValidator::QRegExpValidator ( const QRegExp & rx, QObject * parent, const char * name = 0 )" +Constructs a validator which accepts all strings that match the regular expression \fIrx\fR. The object's parent is \fIparent\fR and its name is \fIname\fR. +.PP +The match is made against the entire string, e.g. if the regexp is \fB[A-Fa-f0-9]+\fR it will be treated as \fB^[A-Fa-f0-9]+$\fR. +.SH "QRegExpValidator::~QRegExpValidator ()" +Destroys the validator, freeing any resources allocated. +.SH "const QRegExp & QRegExpValidator::regExp () const" +Returns the regular expression used for validation. +.PP +See also setRegExp(). +.SH "void QRegExpValidator::setRegExp ( const QRegExp & rx )" +Sets the regular expression used for validation to \fIrx\fR. +.PP +See also regExp(). +.SH "QValidator::State QRegExpValidator::validate ( QString & input, int & pos ) const\fC [virtual]\fR" +Returns Acceptable if \fIinput\fR is matched by the regular expression for this validator, Intermediate if it has matched partially (i.e. could be a valid match if additional valid characters are added), and Invalid if \fIinput\fR is not matched. +.PP +The \fIpos\fR parameter is set to the length of the \fIinput\fR parameter. +.PP +For example, if the regular expression is \fB\w\d\d\fR (that is, word-character, digit, digit) then "A57" is Acceptable," E5" is Intermediate and "+9" is Invalid. +.PP +See also QRegExp::match() and QRegExp::search(). +.PP +Reimplemented from QValidator. + +.SH "SEE ALSO" +.BR http://doc.trolltech.com/qregexpvalidator.html +.BR http://www.trolltech.com/faq/tech.html +.SH COPYRIGHT +Copyright 1992-2007 Trolltech ASA, http://www.trolltech.com. See the +license file included in the distribution for a complete license +statement. +.SH AUTHOR +Generated automatically from the source code. +.SH BUGS +If you find a bug in Qt, please report it as described in +.BR http://doc.trolltech.com/bughowto.html . +Good bug reports help us to help you. Thank you. +.P +The definitive Qt documentation is provided in HTML format; it is +located at $QTDIR/doc/html and can be read using Qt Assistant or with +a web browser. This man page is provided as a convenience for those +users who prefer man pages, although this format is not officially +supported by Trolltech. +.P +If you find errors in this manual page, please report them to +.BR qt-bugs@trolltech.com . +Please include the name of the manual page (qregexpvalidator.3qt) and the Qt +version (3.3.8). |