QByteArray: Disentangle number(double) from QLocale

Previously number(double) would go through QLocale which takes a lot of
factors into consideration (which we don't need in this case) and
outputs a QString in the end, which we then have to convert back to
QByteArray. Avoid all that extra work and format it directly into a
QByteArray.

The other number() functions do not use QLocale, so are left alone for now.

Task-number: QTBUG-88484
Change-Id: I4c2eaf101a55ba16e858f95017fb171589a0184e
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>

1 files changed, 2 insertions, 7 deletions

diff --git a/src/corelib/text/qbytearray.cpp b/src/corelib/text/qbytearray.cpp
index 23db7db3e2..d1efd2c35a 100644
--- a/src/corelib/text/qbytearray.cpp
+++ b/src/corelib/text/qbytearray.cpp
@@ -4110,13 +4110,8 @@ QByteArray QByteArray::number(qulonglong n, int base)
 QByteArray QByteArray::number(double n, char format, int precision)
 {
     QLocaleData::DoubleForm form = QLocaleData::DFDecimal;
-    uint flags = QLocaleData::ZeroPadExponent;
 
-    char lower = asciiLower(uchar(format));
-    if (format != lower)
-        flags |= QLocaleData::CapitalEorX;
-
-    switch (lower) {
+    switch (asciiLower(format)) {
         case 'f':
             form = QLocaleData::DFDecimal;
             break;
@@ -4133,7 +4128,7 @@ QByteArray QByteArray::number(double n, char format, int precision)
             break;
     }
 
-    return QLocaleData::c()->doubleToString(n, precision, form, -1, flags).toUtf8();
+    return qdtoAscii(n, form, precision, isUpperCaseAscii(format));
 }
 
 /*!