Wizards: Improve list of files displayed.

Extract the common root directory and display in separate
line. Use the routine from
the cvs plugin for that, moving it to stringutils.h.

1 files changed, 101 insertions, 0 deletions

diff --git a/src/libs/utils/stringutils.cpp b/src/libs/utils/stringutils.cpp
new file mode 100644
index 0000000000..e809cb4786
--- /dev/null
+++ b/src/libs/utils/stringutils.cpp
@@ -0,0 +1,101 @@
+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** Commercial Usage
+**
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Nokia.
+**
+** GNU Lesser General Public License Usage
+**
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at http://qt.nokia.com/contact.
+**
+**************************************************************************/
+
+#include "stringutils.h"
+
+#include <QtCore/QString>
+#include <QtCore/QStringList>
+
+#include <limits.h>
+
+namespace Utils {
+
+QTCREATOR_UTILS_EXPORT QString settingsKey(const QString &category)
+{
+    QString rc(category);
+    const QChar underscore = QLatin1Char('_');
+    const int size = rc.size();
+    for (int i = 0; i < size; i++) {
+        const QChar c = rc.at(i);
+        if (!c.isLetterOrNumber() && c != underscore)
+            rc[i] = underscore;
+    }
+    return rc;
+}
+
+// Figure out length of common start of string ("C:\a", "c:\b"  -> "c:\"
+static inline int commonPartSize(const QString &s1, const QString &s2)
+{
+    const int size = qMin(s1.size(), s2.size());
+    for (int i = 0; i < size; i++)
+        if (s1.at(i) != s2.at(i))
+            return i;
+    return size;
+}
+
+QTCREATOR_UTILS_EXPORT QString commonPrefix(const QStringList &strings)
+{
+    switch (strings.size()) {
+    case 0:
+        return QString();
+    case 1:
+        return strings.front();
+    default:
+        break;
+    }
+    // Figure out common string part: "C:\foo\bar1" "C:\foo\bar2"  -> "C:\foo\bar"
+    int commonLength = INT_MAX;
+    const int last = strings.size() - 1;
+    for (int i = 0; i < last; i++)
+        commonLength = qMin(commonLength, commonPartSize(strings.at(i), strings.at(i + 1)));
+    if (!commonLength)
+        return QString();
+    return strings.at(0).left(commonLength);
+}
+
+QTCREATOR_UTILS_EXPORT QString commonPath(const QStringList &files)
+{
+    QString common = commonPrefix(files);
+    // Find common directory part: "C:\foo\bar" -> "C:\foo"
+    int lastSeparatorPos = common.lastIndexOf(QLatin1Char('/'));
+    if (lastSeparatorPos == -1)
+        lastSeparatorPos = common.lastIndexOf(QLatin1Char('\\'));
+    if (lastSeparatorPos == -1)
+        return QString();
+    if (lastSeparatorPos == -1)
+        return QString();
+#ifdef Q_OS_UNIX
+    if (lastSeparatorPos == 0) // Unix: "/a", "/b" -> '/'
+        lastSeparatorPos = 1;
+#endif
+    common.truncate(lastSeparatorPos);
+    return common;
+}
+
+} // namespace Utils