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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt Creator.
**
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
****************************************************************************/
#include "stringutils.h"
#include "hostosinfo.h"
#include <utils/algorithm.h>
#include <QDir>
#include <limits.h>
namespace Utils {
QTCREATOR_UTILS_EXPORT QString settingsKey(const QString &category)
{
QString rc(category);
const QChar underscore = QLatin1Char('_');
// Remove the sort category "X.Category" -> "Category"
if (rc.size() > 2 && rc.at(0).isLetter() && rc.at(1) == QLatin1Char('.'))
rc.remove(0, 2);
// Replace special characters
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)
{
QStringList appendedSlashes = Utils::transform(files, [](const QString &file) -> QString {
if (!file.endsWith(QLatin1Char('/')))
return QString(file + QLatin1Char('/'));
return file;
});
QString common = commonPrefix(appendedSlashes);
// 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 (HostOsInfo::isAnyUnixHost() && lastSeparatorPos == 0) // Unix: "/a", "/b" -> '/'
lastSeparatorPos = 1;
common.truncate(lastSeparatorPos);
return common;
}
QTCREATOR_UTILS_EXPORT QString withTildeHomePath(const QString &path)
{
if (HostOsInfo::isWindowsHost())
return path;
static const QString homePath = QDir::homePath();
QFileInfo fi(QDir::cleanPath(path));
QString outPath = fi.absoluteFilePath();
if (outPath.startsWith(homePath))
outPath = QLatin1Char('~') + outPath.mid(homePath.size());
else
outPath = path;
return outPath;
}
bool AbstractMacroExpander::expandNestedMacros(const QString &str, int *pos, QString *ret)
{
QString varName;
QChar prev;
QChar c;
int i = *pos;
int strLen = str.length();
varName.reserve(strLen - i);
for (; i < strLen; prev = c) {
c = str.at(i++);
if (c == QLatin1Char('}')) {
if (varName.isEmpty()) { // replace "%{}" with "%"
*ret = QString(QLatin1Char('%'));
*pos = i;
return true;
}
if (resolveMacro(varName, ret)) {
*pos = i;
return true;
}
return false;
} else if (c == QLatin1Char('{') && prev == QLatin1Char('%')) {
if (!expandNestedMacros(str, &i, ret))
return false;
varName.chop(1);
varName += ret;
} else {
varName += c;
}
}
return false;
}
int AbstractMacroExpander::findMacro(const QString &str, int *pos, QString *ret)
{
forever {
int openPos = str.indexOf(QLatin1String("%{"), *pos);
if (openPos < 0)
return 0;
int varPos = openPos + 2;
if (expandNestedMacros(str, &varPos, ret)) {
*pos = openPos;
return varPos - openPos;
}
// An actual expansion may be nested into a "false" one,
// so we continue right after the last %{.
*pos = openPos + 2;
}
}
QTCREATOR_UTILS_EXPORT void expandMacros(QString *str, AbstractMacroExpander *mx)
{
QString rsts;
for (int pos = 0; int len = mx->findMacro(*str, &pos, &rsts); ) {
str->replace(pos, len, rsts);
pos += rsts.length();
}
}
QTCREATOR_UTILS_EXPORT QString expandMacros(const QString &str, AbstractMacroExpander *mx)
{
QString ret = str;
expandMacros(&ret, mx);
return ret;
}
} // namespace Utils
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