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Use QByteArrayView more in QConfFileSettingsPrivate's methods

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Avoid allocating QBA methods when the QBAV methods can do just as
well, especially where the QBA was already being QBAV-wrapped to avoid
such allocations.

Change-Id: I180c2316362685ffda613bab2c761e72c4483fce
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
Reviewed-by: Marc Mutz <marc.mutz@qt.io>
This commit is contained in:
Edward Welbourne 2022-03-21 15:01:31 +01:00
parent b4d003c77f
commit 08d20ee850
2 changed files with 15 additions and 15 deletions
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20
src/corelib/io/qsettings.cpp
View File

@ -573,9 +573,9 @@ void QSettingsPrivate::iniEscapedKey(const QString &key, QByteArray &result)
}
}
bool QSettingsPrivate::iniUnescapedKey(const QByteArray &key, int from, int to, QString &result)
bool QSettingsPrivate::iniUnescapedKey(QByteArrayView key, int from, int to, QString &result)
{
const QString decoded = QString::fromUtf8(QByteArrayView(key).first(to).sliced(from));
const QString decoded = QString::fromUtf8(key.first(to).sliced(from));
const qsizetype size = decoded.size();
result.reserve(result.length() + size);
qsizetype i = 0;
@ -740,7 +740,7 @@ void QSettingsPrivate::iniEscapedStringList(const QStringList &strs, QByteArray
}
}
bool QSettingsPrivate::iniUnescapedStringList(const QByteArray &str, int from, int to,
bool QSettingsPrivate::iniUnescapedStringList(QByteArrayView str, int from, int to,
QString &stringResult, QStringList &stringListResult)
{
static const char escapeCodes[][2] =
@ -844,7 +844,7 @@ StNormal:
++j;
}
stringResult += fromUtf8(QByteArrayView(str).first(j).sliced(i));
stringResult += fromUtf8(str.first(j).sliced(i));
i = j;
}
}
@ -1535,7 +1535,7 @@ static const char charTraits[256] =
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
};
bool QConfFileSettingsPrivate::readIniLine(const QByteArray &data, int &dataPos,
bool QConfFileSettingsPrivate::readIniLine(QByteArrayView data, int &dataPos,
int &lineStart, int &lineLen, int &equalsPos)
{
int dataLen = data.length();
@ -1606,7 +1606,7 @@ break_out_of_outer_loop:
possible, so if the user doesn't check the status he will get the
most out of the file anyway.
*/
bool QConfFileSettingsPrivate::readIniFile(const QByteArray &data,
bool QConfFileSettingsPrivate::readIniFile(QByteArrayView data,
UnparsedSettingsMap *unparsedIniSections)
{
#define FLUSH_CURRENT_SECTION() \
@ -1641,13 +1641,13 @@ bool QConfFileSettingsPrivate::readIniFile(const QByteArray &data,
FLUSH_CURRENT_SECTION();
// this is a section
QByteArray iniSection;
QByteArrayView iniSection;
int idx = data.indexOf(']', lineStart);
if (idx == -1 || idx >= lineStart + lineLen) {
ok = false;
iniSection = data.mid(lineStart + 1, lineLen - 1);
iniSection = data.sliced(lineStart + 1, lineLen - 1);
} else {
iniSection = data.mid(lineStart + 1, idx - lineStart - 1);
iniSection = data.sliced(lineStart + 1, idx - lineStart - 1);
}
iniSection = iniSection.trimmed();
@ -1676,7 +1676,7 @@ bool QConfFileSettingsPrivate::readIniFile(const QByteArray &data,
#undef FLUSH_CURRENT_SECTION
}
bool QConfFileSettingsPrivate::readIniSection(const QSettingsKey &section, const QByteArray &data,
bool QConfFileSettingsPrivate::readIniSection(const QSettingsKey &section, QByteArrayView data,
ParsedSettingsMap *settingsMap)
{
QStringList strListValue;

10
src/corelib/io/qsettings_p.h
View File

@ -231,10 +231,10 @@ public:
static QString variantToString(const QVariant &v);
static QVariant stringToVariant(const QString &s);
static void iniEscapedKey(const QString &key, QByteArray &result);
static bool iniUnescapedKey(const QByteArray &key, int from, int to, QString &result);
static bool iniUnescapedKey(QByteArrayView key, int from, int to, QString &result);
static void iniEscapedString(const QString &str, QByteArray &result);
static void iniEscapedStringList(const QStringList &strs, QByteArray &result);
static bool iniUnescapedStringList(const QByteArray &str, int from, int to,
static bool iniUnescapedStringList(QByteArrayView str, int from, int to,
QString &stringResult, QStringList &stringListResult);
static QStringList splitArgs(const QString &s, int idx);
@ -276,10 +276,10 @@ public:
bool isWritable() const override;
QString fileName() const override;
bool readIniFile(const QByteArray &data, UnparsedSettingsMap *unparsedIniSections);
static bool readIniSection(const QSettingsKey &section, const QByteArray &data,
bool readIniFile(QByteArrayView data, UnparsedSettingsMap *unparsedIniSections);
static bool readIniSection(const QSettingsKey &section, QByteArrayView data,
ParsedSettingsMap *settingsMap);
static bool readIniLine(const QByteArray &data, int &dataPos, int &lineStart, int &lineLen,
static bool readIniLine(QByteArrayView data, int &dataPos, int &lineStart, int &lineLen,
int &equalsPos);
private: