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qt-creator/src/libs/utils/stringutils.cpp
Kai Köhne 56baf8c058 Remove GPL-3.0+ from license identifiers 
Since we also license under GPL-3.0 WITH Qt-GPL-exception-1.0,
this applies only to a hypothetical newer version of GPL, that doesn't
exist yet. If such a version emerges, we can still decide to relicense...

While at it, replace (deprecated) GPL-3.0 with more explicit GPL-3.0-only

Change was done by running

  find . -type f -exec perl -pi -e "s/LicenseRef-Qt-Commercial OR GPL-3.0\+ OR GPL-3.0 WITH Qt-GPL-exception-1.0/LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0/g" {} \;

Change-Id: I5097e6ce8d10233993ee30d7e25120e2659eb10b
Reviewed-by: Eike Ziller <eike.ziller@qt.io>
2023-01-06 11:15:13 +00:00

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "stringutils.h"
#include "algorithm.h"
#include "hostosinfo.h"
#include "qtcassert.h"
#include "filepath.h"
#ifdef QT_WIDGETS_LIB
#include <QApplication>
#include <QClipboard>
#endif
#include <QCoreApplication>
#include <QDir>
#include <QJsonArray>
#include <QJsonValue>
#include <QLocale>
#include <QRegularExpression>
#include <QSet>
#include <QTime>
#include <limits.h>
namespace Utils {
QTCREATOR_UTILS_EXPORT QString settingsKey(const QString &category)
{
QString rc(category);
const QChar underscore = '_';
// Remove the sort category "X.Category" -> "Category"
if (rc.size() > 2 && rc.at(0).isLetter() && rc.at(1) == '.')
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);
}
static bool validateVarName(const QString &varName)
{
return !varName.startsWith("JS:");
}
bool AbstractMacroExpander::expandNestedMacros(const QString &str, int *pos, QString *ret)
{
QString varName;
QString pattern, replace;
QString defaultValue;
QString *currArg = &varName;
QChar prev;
QChar c;
QChar replacementChar;
bool replaceAll = false;
int i = *pos;
int strLen = str.length();
varName.reserve(strLen - i);
for (; i < strLen; prev = c) {
c = str.at(i++);
if (c == '\\' && i < strLen) {
c = str.at(i++);
// For the replacement, do not skip the escape sequence when followed by a digit.
// This is needed for enabling convenient capture group replacement,
// like %{var/(.)(.)/\2\1}, without escaping the placeholders.
if (currArg == &replace && c.isDigit())
*currArg += '\\';
*currArg += c;
} else if (c == '}') {
if (varName.isEmpty()) { // replace "%{}" with "%"
*ret = QString('%');
*pos = i;
return true;
}
QSet<AbstractMacroExpander*> seen;
if (resolveMacro(varName, ret, seen)) {
*pos = i;
if (!pattern.isEmpty() && currArg == &replace) {
const QRegularExpression regexp(pattern);
if (regexp.isValid()) {
if (replaceAll) {
ret->replace(regexp, replace);
} else {
// There isn't an API for replacing once...
const QRegularExpressionMatch match = regexp.match(*ret);
if (match.hasMatch()) {
*ret = ret->left(match.capturedStart(0))
+ match.captured(0).replace(regexp, replace)
+ ret->mid(match.capturedEnd(0));
}
}
}
}
return true;
}
if (!defaultValue.isEmpty()) {
*pos = i;
*ret = defaultValue;
return true;
}
return false;
} else if (c == '{' && prev == '%') {
if (!expandNestedMacros(str, &i, ret))
return false;
varName.chop(1);
varName += *ret;
} else if (currArg == &varName && c == '-' && prev == ':' && validateVarName(varName)) {
varName.chop(1);
currArg = &defaultValue;
} else if (currArg == &varName && (c == '/' || c == '#') && validateVarName(varName)) {
replacementChar = c;
currArg = &pattern;
if (i < strLen && str.at(i) == replacementChar) {
++i;
replaceAll = true;
}
} else if (currArg == &pattern && c == replacementChar) {
currArg = &replace;
} else {
*currArg += c;
}
}
return false;
}
int AbstractMacroExpander::findMacro(const QString &str, int *pos, QString *ret)
{
forever {
int openPos = str.indexOf("%{", *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;
}
QTCREATOR_UTILS_EXPORT QString stripAccelerator(const QString &text)
{
QString res = text;
for (int index = res.indexOf('&'); index != -1; index = res.indexOf('&', index + 1))
res.remove(index, 1);
return res;
}
QTCREATOR_UTILS_EXPORT bool readMultiLineString(const QJsonValue &value, QString *out)
{
QTC_ASSERT(out, return false);
if (value.isString()) {
*out = value.toString();
} else if (value.isArray()) {
QJsonArray array = value.toArray();
QStringList lines;
for (const QJsonValue &v : array) {
if (!v.isString())
return false;
lines.append(v.toString());
}
*out = lines.join(QLatin1Char('\n'));
} else {
return false;
}
return true;
}
QTCREATOR_UTILS_EXPORT int parseUsedPortFromNetstatOutput(const QByteArray &line)
{
const QByteArray trimmed = line.trimmed();
int base = 0;
QByteArray portString;
if (trimmed.startsWith("TCP") || trimmed.startsWith("UDP")) {
// Windows. Expected output is something like
//
// Active Connections
//
// Proto Local Address Foreign Address State
// TCP 0.0.0.0:80 0.0.0.0:0 LISTENING
// TCP 0.0.0.0:113 0.0.0.0:0 LISTENING
// [...]
// TCP 10.9.78.4:14714 0.0.0.0:0 LISTENING
// TCP 10.9.78.4:50233 12.13.135.180:993 ESTABLISHED
// [...]
// TCP [::]:445 [::]:0 LISTENING
// TCP 192.168.0.80:51905 169.55.74.50:443 ESTABLISHED
// UDP [fe80::880a:2932:8dff:a858%6]:1900 *:*
const int firstBracketPos = trimmed.indexOf('[');
int colonPos = -1;
if (firstBracketPos == -1) {
colonPos = trimmed.indexOf(':'); // IPv4
} else {
// jump over host part
const int secondBracketPos = trimmed.indexOf(']', firstBracketPos + 1);
colonPos = trimmed.indexOf(':', secondBracketPos);
}
const int firstDigitPos = colonPos + 1;
const int spacePos = trimmed.indexOf(' ', firstDigitPos);
if (spacePos < 0)
return -1;
const int len = spacePos - firstDigitPos;
base = 10;
portString = trimmed.mid(firstDigitPos, len);
} else if (trimmed.startsWith("tcp") || trimmed.startsWith("udp")) {
// macOS. Expected output is something like
//
// Active Internet connections (including servers)
// Proto Recv-Q Send-Q Local Address Foreign Address (state)
// tcp4 0 0 192.168.1.12.55687 88.198.14.66.443 ESTABLISHED
// tcp6 0 0 2a01:e34:ee42:d0.55684 2a02:26f0:ff::5c.443 ESTABLISHED
// [...]
// tcp4 0 0 *.631 *.* LISTEN
// tcp6 0 0 *.631 *.* LISTEN
// [...]
// udp4 0 0 192.168.79.1.123 *.*
// udp4 0 0 192.168.8.1.123 *.*
int firstDigitPos = -1;
int spacePos = -1;
if (trimmed[3] == '6') {
// IPV6
firstDigitPos = trimmed.indexOf('.') + 1;
spacePos = trimmed.indexOf(' ', firstDigitPos);
} else {
// IPV4
firstDigitPos = trimmed.indexOf('.') + 1;
spacePos = trimmed.indexOf(' ', firstDigitPos);
firstDigitPos = trimmed.lastIndexOf('.', spacePos) + 1;
}
if (spacePos < 0)
return -1;
base = 10;
portString = trimmed.mid(firstDigitPos, spacePos - firstDigitPos);
if (portString == "*")
return -1;
} else {
// Expected output on Linux something like
//
// sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt ...
// 0: 00000000:2805 00000000:0000 0A 00000000:00000000 00:00000000 00000000 ...
//
const int firstColonPos = trimmed.indexOf(':');
if (firstColonPos < 0)
return -1;
const int secondColonPos = trimmed.indexOf(':', firstColonPos + 1);
if (secondColonPos < 0)
return -1;
const int spacePos = trimmed.indexOf(' ', secondColonPos + 1);
if (spacePos < 0)
return -1;
const int len = spacePos - secondColonPos - 1;
base = 16;
portString = trimmed.mid(secondColonPos + 1, len);
}
bool ok = true;
const int port = portString.toInt(&ok, base);
if (!ok) {
qWarning("%s: Unexpected string '%s' is not a port. Tried to read from '%s'",
Q_FUNC_INFO, line.data(), portString.data());
return -1;
}
return port;
}
int caseFriendlyCompare(const QString &a, const QString &b)
{
int result = a.compare(b, Qt::CaseInsensitive);
if (result != 0)
return result;
return a.compare(b, Qt::CaseSensitive);
}
QString quoteAmpersands(const QString &text)
{
QString result = text;
return result.replace("&", "&&");
}
QString formatElapsedTime(qint64 elapsed)
{
elapsed += 500; // round up
const QString format = QString::fromLatin1(elapsed >= 3600000 ? "h:mm:ss" : "mm:ss");
const QString time = QTime(0, 0).addMSecs(elapsed).toString(format);
return QCoreApplication::translate("StringUtils", "Elapsed time: %1.").arg(time);
}
/*
* Basically QRegularExpression::wildcardToRegularExpression(), but let wildcards match
* path separators as well
*/
QString wildcardToRegularExpression(const QString &original)
{
const qsizetype wclen = original.size();
QString rx;
rx.reserve(wclen + wclen / 16);
qsizetype i = 0;
const QChar *wc = original.data();
const QLatin1String starEscape(".*");
const QLatin1String questionMarkEscape(".");
while (i < wclen) {
const QChar c = wc[i++];
switch (c.unicode()) {
case '*':
rx += starEscape;
break;
case '?':
rx += questionMarkEscape;
break;
case '\\':
case '$':
case '(':
case ')':
case '+':
case '.':
case '^':
case '{':
case '|':
case '}':
rx += QLatin1Char('\\');
rx += c;
break;
case '[':
rx += c;
// Support for the [!abc] or [!a-c] syntax
if (i < wclen) {
if (wc[i] == QLatin1Char('!')) {
rx += QLatin1Char('^');
++i;
}
if (i < wclen && wc[i] == QLatin1Char(']'))
rx += wc[i++];
while (i < wclen && wc[i] != QLatin1Char(']')) {
if (wc[i] == QLatin1Char('\\'))
rx += QLatin1Char('\\');
rx += wc[i++];
}
}
break;
default:
rx += c;
break;
}
}
return QRegularExpression::anchoredPattern(rx);
}
QTCREATOR_UTILS_EXPORT QString languageNameFromLanguageCode(const QString &languageCode)
{
QLocale locale(languageCode);
QString languageName = QLocale::languageToString(locale.language());
QString nativeLanguageName = locale.nativeLanguageName().simplified();
if (!nativeLanguageName.isEmpty() && languageName != nativeLanguageName)
languageName += " - " + locale.nativeLanguageName();
return languageName;
}
#ifdef QT_WIDGETS_LIB
QTCREATOR_UTILS_EXPORT void setClipboardAndSelection(const QString &text)
{
QClipboard *clipboard = QApplication::clipboard();
clipboard->setText(text);
if (clipboard->supportsSelection())
clipboard->setText(text, QClipboard::Selection);
}
#endif
QTCREATOR_UTILS_EXPORT QString chopIfEndsWith(QString str, QChar c)
{
if (str.endsWith(c))
str.chop(1);
return str;
}
QTCREATOR_UTILS_EXPORT QStringView chopIfEndsWith(QStringView str, QChar c)
{
if (str.endsWith(c))
str.chop(1);
return str;
}
QTCREATOR_UTILS_EXPORT QString appendHelper(const QString &base, int n)
{
return base + QString::number(n);
}
QTCREATOR_UTILS_EXPORT FilePath appendHelper(const FilePath &base, int n)
{
return base.stringAppended(QString::number(n));
}
} // namespace Utils
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