File indexing completed on 2024-04-21 03:54:20

 /*  This file is part of the KDE libraries
     SPDX-FileCopyrightText: 2008 Chusslove Illich <caslav.ilic@gmx.net>
 
     SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #include <common_helpers_p.h>
 
 // If pos points to alphanumeric X in "...(X)...", which is preceded or
 // followed only by non-alphanumerics, then "(X)" gets removed.
 static QString removeReducedCJKAccMark(const QString &label, int pos)
 {
     if (pos > 0 && pos + 1 < label.length() //
         && label[pos - 1] == QLatin1Char('(') //
         && label[pos + 1] == QLatin1Char(')') //
         && label[pos].isLetterOrNumber()) {
         // Check if at start or end, ignoring non-alphanumerics.
         int len = label.length();
         int p1 = pos - 2;
         while (p1 >= 0 && !label[p1].isLetterOrNumber()) {
             --p1;
         }
         ++p1;
         int p2 = pos + 2;
         while (p2 < len && !label[p2].isLetterOrNumber()) {
             ++p2;
         }
         --p2;
 
         const QStringView labelView(label);
         if (p1 == 0) {
             return labelView.left(pos - 1) + labelView.mid(p2 + 1);
         } else if (p2 + 1 == len) {
             return labelView.left(p1) + labelView.mid(pos + 2);
         }
     }
     return label;
 }
 
 QString removeAcceleratorMarker(const QString &label_)
 {
     QString label = label_;
 
     int p = 0;
     bool accmarkRemoved = false;
     while (true) {
         p = label.indexOf(QLatin1Char('&'), p);
         if (p < 0 || p + 1 == label.length()) {
             break;
         }
 
         const QStringView labelView(label);
         const QChar marker = label.at(p + 1);
         if (marker.isLetterOrNumber()) {
             // Valid accelerator.
             label = labelView.left(p) + labelView.mid(p + 1);
 
             // May have been an accelerator in CJK-style "(&X)"
             // at the start or end of text.
             label = removeReducedCJKAccMark(label, p);
 
             accmarkRemoved = true;
         } else if (marker == QLatin1Char('&')) {
             // Escaped accelerator marker.
             label = labelView.left(p) + labelView.mid(p + 1);
         }
 
         ++p;
     }
 
     // If no marker was removed, and there are CJK characters in the label,
     // also try to remove reduced CJK marker -- something may have removed
     // ampersand beforehand.
     if (!accmarkRemoved) {
         bool hasCJK = false;
         for (const QChar c : std::as_const(label)) {
             if (c.unicode() >= 0x2e00) { // rough, but should be sufficient
                 hasCJK = true;
                 break;
             }
         }
         if (hasCJK) {
             p = 0;
             while (true) {
                 p = label.indexOf(QLatin1Char('('), p);
                 if (p < 0) {
                     break;
                 }
                 label = removeReducedCJKAccMark(label, p + 1);
                 ++p;
             }
         }
     }
 
     return label;
 }