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/* This file is part of the KDE libraries
Copyright (C) 2008 Chusslove Illich <caslav.ilic@gmx.net>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#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] == '(' && label[pos + 1] == ')'
&& 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;
if (p1 == 0) {
return label.left(pos - 1) + label.mid(p2 + 1);
} else if (p2 + 1 == len) {
return label.left(p1) + label.mid(pos + 2);
}
}
return label;
}
QString removeAcceleratorMarker (const QString &label_)
{
QString label = label_;
int p = 0;
bool accmarkRemoved = false;
while (true) {
p = label.indexOf('&', p);
if (p < 0 || p + 1 == label.length()) {
break;
}
if (label[p + 1].isLetterOrNumber()) {
// Valid accelerator.
label = label.left(p) + label.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 (label[p + 1] == '&') {
// Escaped accelerator marker.
label = label.left(p) + label.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;
foreach (const QChar &c, label) {
if (c.unicode() >= 0x2e00) { // rough, but should be sufficient
hasCJK = true;
break;
}
}
if (hasCJK) {
p = 0;
while (true) {
p = label.indexOf('(', p);
if (p < 0) {
break;
}
label = removeReducedCJKAccMark(label, p + 1);
++p;
}
}
}
return label;
}
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