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| author | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-07-10 15:24:15 -0500 |
|---|---|---|
| committer | Timothy Pearson <kb9vqf@pearsoncomputing.net> | 2011-07-10 15:24:15 -0500 |
| commit | bd0f3345a938b35ce6a12f6150373b0955b8dd12 (patch) | |
| tree | 7a520322212d48ebcb9fbe1087e7fca28b76185c /doc/html/regexptester-example.html | |
| download | qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.tar.gz qt3-bd0f3345a938b35ce6a12f6150373b0955b8dd12.zip | |
Add Qt3 development HEAD version
Diffstat (limited to 'doc/html/regexptester-example.html')
| -rw-r--r-- | doc/html/regexptester-example.html | 299 |
1 files changed, 299 insertions, 0 deletions
diff --git a/doc/html/regexptester-example.html b/doc/html/regexptester-example.html new file mode 100644 index 0000000..982ce82 --- /dev/null +++ b/doc/html/regexptester-example.html @@ -0,0 +1,299 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> +<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/examples/regexptester/regexptester.doc:1 --> +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> +<title>A Small Application for Testing Regular Expressions</title> +<style type="text/css"><!-- +fn { margin-left: 1cm; text-indent: -1cm; } +a:link { color: #004faf; text-decoration: none } +a:visited { color: #672967; text-decoration: none } +body { background: #ffffff; color: black; } +--></style> +</head> +<body> + +<table border="0" cellpadding="0" cellspacing="0" width="100%"> +<tr bgcolor="#E5E5E5"> +<td valign=center> + <a href="index.html"> +<font color="#004faf">Home</font></a> + | <a href="classes.html"> +<font color="#004faf">All Classes</font></a> + | <a href="mainclasses.html"> +<font color="#004faf">Main Classes</font></a> + | <a href="annotated.html"> +<font color="#004faf">Annotated</font></a> + | <a href="groups.html"> +<font color="#004faf">Grouped Classes</font></a> + | <a href="functions.html"> +<font color="#004faf">Functions</font></a> +</td> +<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>A Small Application for Testing Regular Expressions</h1> + + + +<p> +<p> Regular expressions can sometimes be tricky to get right, +especially those that use the * quantifier. This application lets +you type in a regexp (without doubling the backslashes) and some +test text, and to execute the regexp and see the results. If you +click the Copy button the regexp will be copied to the clipboard +(with the backslashes doubled, ready for you to paste into your +program). Previous regexps and test texts are remembered +throughout the session and can be accessed by dropping down the +comboboxes. +<p> <hr> +<p> Header file: +<p> <pre>#ifndef REGEXPTESTER_H +#define REGEXPTESTER_H + +#include <<a href="qdialog-h.html">qdialog.h</a>> + +class QCheckBox; +class QComboBox; +class QLabel; +class QPushButton; +class QStatusBar; +class QTable; + +class RegexpTester : public <a href="qdialog.html">QDialog</a> +{ + <a href="metaobjects.html#Q_OBJECT">Q_OBJECT</a> + +public: + RegexpTester(QWidget* parent=0, const char* name=0, bool modal=false, + WFlags f=0); + + <a href="qlabel.html">QLabel</a> *regexLabel; + <a href="qcombobox.html">QComboBox</a> *regexComboBox; + <a href="qlabel.html">QLabel</a> *textLabel; + <a href="qcombobox.html">QComboBox</a> *textComboBox; + <a href="qcheckbox.html">QCheckBox</a> *caseSensitiveCheckBox; + <a href="qcheckbox.html">QCheckBox</a> *minimalCheckBox; + <a href="qcheckbox.html">QCheckBox</a> *wildcardCheckBox; + <a href="qtable.html">QTable</a> *resultTable; + <a href="qpushbutton.html">QPushButton</a> *executePushButton; + <a href="qpushbutton.html">QPushButton</a> *copyPushButton; + <a href="qpushbutton.html">QPushButton</a> *quitPushButton; + <a href="qstatusbar.html">QStatusBar</a> *statusBar; + +public slots: + void copy(); + void execute(); + +private: + void languageChange(); +}; + +#endif // REGEXPTESTER_H +</pre> + +<p> <hr> +<p> Implementation: +<p> <pre>#include <<a href="qapplication-h.html">qapplication.h</a>> +#include <<a href="qcheckbox-h.html">qcheckbox.h</a>> +#include <<a href="qclipboard-h.html">qclipboard.h</a>> +#include <<a href="qcombobox-h.html">qcombobox.h</a>> +#include <<a href="qlabel-h.html">qlabel.h</a>> +#include <<a href="qlayout-h.html">qlayout.h</a>> +#include <<a href="qpushbutton-h.html">qpushbutton.h</a>> +#include <<a href="qregexp-h.html">qregexp.h</a>> +#include <<a href="qstatusbar-h.html">qstatusbar.h</a>> +#include <<a href="qtable-h.html">qtable.h</a>> + +#include "regexptester.h" + + +<a name="f556"></a>RegexpTester::RegexpTester(QWidget* parent, const char* name, bool modal, + WFlags f) + : <a href="qdialog.html">QDialog</a>(parent, name, modal, f) +{ + regexLabel = new <a href="qlabel.html">QLabel</a>(this); + regexComboBox = new <a href="qcombobox.html">QComboBox</a>(this); +<a name="x2480"></a> regexComboBox-><a href="qcombobox.html#setEditable">setEditable</a>(true); +<a name="x2507"></a> regexComboBox-><a href="qwidget.html#setSizePolicy">setSizePolicy</a>(QSizePolicy::Expanding, QSizePolicy::Preferred); +<a name="x2482"></a> regexLabel-><a href="qlabel.html#setBuddy">setBuddy</a>(regexComboBox); + textLabel = new <a href="qlabel.html">QLabel</a>(this); + textComboBox = new <a href="qcombobox.html">QComboBox</a>(this); + textComboBox-><a href="qcombobox.html#setEditable">setEditable</a>(true); + textComboBox-><a href="qwidget.html#setSizePolicy">setSizePolicy</a>(QSizePolicy::Expanding, QSizePolicy::Preferred); + textLabel-><a href="qlabel.html#setBuddy">setBuddy</a>(textComboBox); + caseSensitiveCheckBox = new <a href="qcheckbox.html">QCheckBox</a>(this); +<a name="x2475"></a> caseSensitiveCheckBox-><a href="qcheckbox.html#setChecked">setChecked</a>(true); + minimalCheckBox = new <a href="qcheckbox.html">QCheckBox</a>(this); + wildcardCheckBox = new <a href="qcheckbox.html">QCheckBox</a>(this); + resultTable = new <a href="qtable.html">QTable</a>(3, 3, this); +<a name="x2506"></a> resultTable-><a href="qtable.html#verticalHeader">verticalHeader</a>()->hide(); +<a name="x2501"></a> resultTable-><a href="qtable.html#setLeftMargin">setLeftMargin</a>(0); +<a name="x2499"></a> resultTable-><a href="qtable.html#horizontalHeader">horizontalHeader</a>()->hide(); +<a name="x2505"></a> resultTable-><a href="qtable.html#setTopMargin">setTopMargin</a>(0); +<a name="x2503"></a> resultTable-><a href="qtable.html#setReadOnly">setReadOnly</a>(true); + executePushButton = new <a href="qpushbutton.html">QPushButton</a>(this); +<a name="x2484"></a> executePushButton-><a href="qpushbutton.html#setDefault">setDefault</a>(true); + copyPushButton = new <a href="qpushbutton.html">QPushButton</a>(this); + quitPushButton = new <a href="qpushbutton.html">QPushButton</a>(this); + statusBar = new <a href="qstatusbar.html">QStatusBar</a>(this); + + <a href="qgridlayout.html">QGridLayout</a> *gridLayout = new <a href="qgridlayout.html">QGridLayout</a>(2, 2, 6); + gridLayout-><a href="qgridlayout.html#addWidget">addWidget</a>(regexLabel, 0, 0); + gridLayout-><a href="qgridlayout.html#addWidget">addWidget</a>(regexComboBox, 0, 1); + gridLayout-><a href="qgridlayout.html#addWidget">addWidget</a>(textLabel, 1, 0); + gridLayout-><a href="qgridlayout.html#addWidget">addWidget</a>(textComboBox, 1, 1); + <a href="qhboxlayout.html">QHBoxLayout</a> *checkboxLayout = new <a href="qhboxlayout.html">QHBoxLayout</a>(0, 6, 6); + checkboxLayout-><a href="qboxlayout.html#addWidget">addWidget</a>(caseSensitiveCheckBox); + checkboxLayout-><a href="qboxlayout.html#addWidget">addWidget</a>(minimalCheckBox); + checkboxLayout-><a href="qboxlayout.html#addWidget">addWidget</a>(wildcardCheckBox); +<a name="x2470"></a> checkboxLayout-><a href="qboxlayout.html#addStretch">addStretch</a>(1); + <a href="qvboxlayout.html">QVBoxLayout</a> *buttonLayout = new <a href="qvboxlayout.html">QVBoxLayout</a>(0, 6, 6); + buttonLayout-><a href="qboxlayout.html#addWidget">addWidget</a>(executePushButton); + buttonLayout-><a href="qboxlayout.html#addWidget">addWidget</a>(copyPushButton); + buttonLayout-><a href="qboxlayout.html#addWidget">addWidget</a>(quitPushButton); + buttonLayout-><a href="qboxlayout.html#addStretch">addStretch</a>(1); + <a href="qhboxlayout.html">QHBoxLayout</a> *middleLayout = new <a href="qhboxlayout.html">QHBoxLayout</a>(0, 6, 6); + middleLayout-><a href="qboxlayout.html#addWidget">addWidget</a>(resultTable); +<a name="x2469"></a> middleLayout-><a href="qboxlayout.html#addLayout">addLayout</a>(buttonLayout); + <a href="qvboxlayout.html">QVBoxLayout</a> *mainLayout = new <a href="qvboxlayout.html">QVBoxLayout</a>(this, 6, 6); + mainLayout-><a href="qboxlayout.html#addLayout">addLayout</a>(gridLayout); + mainLayout-><a href="qboxlayout.html#addLayout">addLayout</a>(checkboxLayout); + mainLayout-><a href="qboxlayout.html#addLayout">addLayout</a>(middleLayout); + mainLayout-><a href="qboxlayout.html#addWidget">addWidget</a>(statusBar); + + <a href="qwidget.html#resize">resize</a>(QSize(500, 350).expandedTo(<a href="qwidget.html#minimumSizeHint">minimumSizeHint</a>())); + + languageChange(); + + <a href="qobject.html#connect">connect</a>(copyPushButton, SIGNAL(<a href="qbutton.html#clicked">clicked</a>()), this, SLOT(copy())); + <a href="qobject.html#connect">connect</a>(executePushButton, SIGNAL(<a href="qbutton.html#clicked">clicked</a>()), this, SLOT(execute())); + <a href="qobject.html#connect">connect</a>(quitPushButton, SIGNAL(<a href="qbutton.html#clicked">clicked</a>()), this, SLOT(<a href="qdialog.html#accept">accept</a>())); + + execute(); +} + +void <a name="f557"></a>RegexpTester::execute() +{ +<a name="x2478"></a> <a href="qstring.html">QString</a> regex = regexComboBox-><a href="qcombobox.html#currentText">currentText</a>(); + <a href="qstring.html">QString</a> text = textComboBox-><a href="qcombobox.html#currentText">currentText</a>(); + if (!regex.<a href="qstring.html#isEmpty">isEmpty</a>() && !text.<a href="qstring.html#isEmpty">isEmpty</a>()) { + <a href="qregexp.html">QRegExp</a> re(regex); +<a name="x2491"></a><a name="x2474"></a> re.<a href="qregexp.html#setCaseSensitive">setCaseSensitive</a>(caseSensitiveCheckBox-><a href="qcheckbox.html#isChecked">isChecked</a>()); +<a name="x2492"></a> re.<a href="qregexp.html#setMinimal">setMinimal</a>(minimalCheckBox-><a href="qcheckbox.html#isChecked">isChecked</a>()); + bool wildcard = wildcardCheckBox-><a href="qcheckbox.html#isChecked">isChecked</a>(); +<a name="x2493"></a> re.<a href="qregexp.html#setWildcard">setWildcard</a>(wildcard); +<a name="x2487"></a> if (!re.<a href="qregexp.html#isValid">isValid</a>()) { +<a name="x2494"></a> statusBar-><a href="qstatusbar.html#message">message</a>(<a href="qobject.html#tr">tr</a>("Invalid <a href="qregexp.html#regular-expression">regular expression</a>: %1") +<a name="x2486"></a> .arg(re.<a href="qregexp.html#errorString">errorString</a>())); + return; + } +<a name="x2490"></a> int offset = re.<a href="qregexp.html#search">search</a>(text); +<a name="x2489"></a> int captures = re.<a href="qregexp.html#numCaptures">numCaptures</a>(); + int row = 0; + const int OFFSET = 5; +<a name="x2502"></a> resultTable-><a href="qtable.html#setNumRows">setNumRows</a>(0); + resultTable-><a href="qtable.html#setNumRows">setNumRows</a>(captures + OFFSET); +<a name="x2504"></a> resultTable-><a href="qtable.html#setText">setText</a>(row, 0, tr("Regex")); + <a href="qstring.html">QString</a> escaped = regex; +<a name="x2497"></a> escaped = escaped.<a href="qstring.html#replace">replace</a>("\\", "\\\\"); + resultTable-><a href="qtable.html#setText">setText</a>(row, 1, escaped); +<a name="x2500"></a> resultTable-><a href="qtable.html#item">item</a>(row, 1)->setSpan(1, 2); + if (offset != -1) { + ++row; + resultTable-><a href="qtable.html#setText">setText</a>(row, 0, tr("Offset")); + resultTable-><a href="qtable.html#setText">setText</a>(row, 1, QString::number(offset)); + resultTable-><a href="qtable.html#item">item</a>(row, 1)->setSpan(1, 2); + if (!wildcard) { + ++row; + resultTable-><a href="qtable.html#setText">setText</a>(row, 0, tr("Captures")); + resultTable-><a href="qtable.html#setText">setText</a>(row, 1, QString::number(captures)); + resultTable-><a href="qtable.html#item">item</a>(row, 1)->setSpan(1, 2); + ++row; + resultTable-><a href="qtable.html#setText">setText</a>(row, 1, tr("Text")); + resultTable-><a href="qtable.html#setText">setText</a>(row, 2, tr("Characters")); + } + ++row; + resultTable-><a href="qtable.html#setText">setText</a>(row, 0, tr("Match")); +<a name="x2485"></a> resultTable-><a href="qtable.html#setText">setText</a>(row, 1, re.<a href="qregexp.html#cap">cap</a>(0)); +<a name="x2488"></a> resultTable-><a href="qtable.html#setText">setText</a>(row, 2, QString::number(re.<a href="qregexp.html#matchedLength">matchedLength</a>())); + if (!wildcard) { + for (int i = 1; i <= captures; ++i) { + resultTable-><a href="qtable.html#setText">setText</a>(row + i, 0, tr("Capture #%1").arg(i)); + resultTable-><a href="qtable.html#setText">setText</a>(row + i, 1, re.<a href="qregexp.html#cap">cap</a>(i)); + resultTable-><a href="qtable.html#setText">setText</a>(row + i, 2, +<a name="x2496"></a> QString::<a href="qstring.html#number">number</a>(re.<a href="qregexp.html#cap">cap</a>(i).length())); + } + } + else + resultTable-><a href="qtable.html#setNumRows">setNumRows</a>(3); + } + else { + resultTable-><a href="qtable.html#setNumRows">setNumRows</a>(2); + ++row; + resultTable-><a href="qtable.html#setText">setText</a>(row, 0, tr("No matches")); + resultTable-><a href="qtable.html#item">item</a>(row, 0)->setSpan(1, 3); + } +<a name="x2498"></a> resultTable-><a href="qtable.html#adjustColumn">adjustColumn</a>(0); + resultTable-><a href="qtable.html#adjustColumn">adjustColumn</a>(1); + resultTable-><a href="qtable.html#adjustColumn">adjustColumn</a>(2); + statusBar-><a href="qstatusbar.html#message">message</a>(<a href="qobject.html#tr">tr</a>("Executed \"%1\" on \"%2\"") + .arg(escaped).arg(text)); + } + else + statusBar-><a href="qstatusbar.html#message">message</a>(<a href="qobject.html#tr">tr</a>("A regular expression and a text must be given")); +} + +void <a name="f558"></a>RegexpTester::copy() +{ + <a href="qstring.html">QString</a> escaped = regexComboBox-><a href="qcombobox.html#currentText">currentText</a>(); + if (!escaped.<a href="qstring.html#isEmpty">isEmpty</a>()) { + escaped = escaped.<a href="qstring.html#replace">replace</a>("\\", "\\\\"); +<a name="x2468"></a> <a href="qclipboard.html">QClipboard</a> *cb = QApplication::<a href="qapplication.html#clipboard">clipboard</a>(); +<a name="x2476"></a> cb-><a href="qclipboard.html#setText">setText</a>(escaped, QClipboard::Clipboard); +<a name="x2477"></a> if (cb-><a href="qclipboard.html#supportsSelection">supportsSelection</a>()) + cb-><a href="qclipboard.html#setText">setText</a>(escaped, QClipboard::Selection); + statusBar-><a href="qstatusbar.html#message">message</a>(<a href="qobject.html#tr">tr</a>("Copied \"%1\" to the clipboard") + .arg(escaped)); + } +} + +void <a name="f559"></a>RegexpTester::languageChange() +{ + <a href="qwidget.html#setCaption">setCaption</a>(<a href="qobject.html#tr">tr</a>("Regex Tester")); + regexLabel-><a href="qlabel.html#setText">setText</a>(<a href="qobject.html#tr">tr</a>("&Regex:")); +<a name="x2479"></a> regexComboBox-><a href="qcombobox.html#insertItem">insertItem</a>(<a href="qobject.html#tr">tr</a>("[A-Z]+=(\\d+):(\\d*)")); + textLabel-><a href="qlabel.html#setText">setText</a>(<a href="qobject.html#tr">tr</a>("&Text:")); + textComboBox-><a href="qcombobox.html#insertItem">insertItem</a>(<a href="qobject.html#tr">tr</a>("ABC=12:3456")); +<a name="x2473"></a> caseSensitiveCheckBox-><a href="qbutton.html#setText">setText</a>(<a href="qobject.html#tr">tr</a>("Case &Sensitive")); + minimalCheckBox-><a href="qbutton.html#setText">setText</a>(<a href="qobject.html#tr">tr</a>("&Minimal")); + wildcardCheckBox-><a href="qbutton.html#setText">setText</a>(<a href="qobject.html#tr">tr</a>("&Wildcard")); + copyPushButton-><a href="qbutton.html#setText">setText</a>(<a href="qobject.html#tr">tr</a>("&Copy")); + executePushButton-><a href="qbutton.html#setText">setText</a>(<a href="qobject.html#tr">tr</a>("&Execute")); + quitPushButton-><a href="qbutton.html#setText">setText</a>(<a href="qobject.html#tr">tr</a>("&Quit")); +} + +</pre> + +<p> <hr> +<p> Main: +<p> <pre>#include <<a href="qapplication-h.html">qapplication.h</a>> +#include "regexptester.h" + +int main(int argc, char **argv) +{ + <a href="qapplication.html">QApplication</a> app(argc, argv); + RegexpTester form; +<a name="x2511"></a> form.<a href="qdialog.html#show">show</a>(); +<a name="x2512"></a><a name="x2510"></a><a name="x2509"></a> app.<a href="qobject.html#connect">connect</a>(&app, SIGNAL(<a href="qapplication.html#lastWindowClosed">lastWindowClosed</a>()), &app, SLOT(<a href="qapplication.html#quit">quit</a>())); + return app.<a href="qapplication.html#exec">exec</a>(); +} +</pre> + +<p>See also <a href="examples.html">Examples</a>. + +<!-- eof --> +<p><address><hr><div align=center> +<table width=100% cellspacing=0 border=0><tr> +<td>Copyright © 2007 +<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a> +<td align=right><div align=right>Qt 3.3.8</div> +</table></div></address></body> +</html> |