size some stringbuffer to prevent re-alloc

found by the simple expidient of putting asserts in
the resize routine. Where an explicit const size is used,
I started with 32 and kept doubling until that site
did not need resizing anymore.

Change-Id: I998787edc940d0a3ba23b5ac37131ab9ecd300f4
Reviewed-on: https://gerrit.libreoffice.org/81138
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

2 files changed, 16 insertions, 17 deletions

diff --git a/svl/source/numbers/zforlist.cxx b/svl/source/numbers/zforlist.cxx
index 9a0660f74e24..04e32464d8b2 100644
--- a/svl/source/numbers/zforlist.cxx
+++ b/svl/source/numbers/zforlist.cxx
@@ -2719,28 +2719,27 @@ void SvNumberFormatter::ImpGenerateFormats( sal_uInt32 CLOffset, bool bNoAdditio
 
     const NfKeywordTable & rKeyword = pFormatScanner->GetKeywords();
     i18n::NumberFormatCode aSingleFormatCode;
-    OUStringBuffer aBuf;
     aSingleFormatCode.Usage = i18n::KNumberFormatUsage::DATE_TIME;
 
     // YYYY-MM-DD HH:MM:SS   ISO (with blank instead of 'T')
-    aBuf.append( rKeyword[NF_KEY_YYYY]).append('-').
-        append( rKeyword[NF_KEY_MM]).append('-').
-        append( rKeyword[NF_KEY_DD]).append(' ').
-        append( rKeyword[NF_KEY_HH]).append(':').
-        append( rKeyword[NF_KEY_MMI]).append(':').
-        append( rKeyword[NF_KEY_SS]);
-    aSingleFormatCode.Code = aBuf.makeStringAndClear();
+    aSingleFormatCode.Code =
+        rKeyword[NF_KEY_YYYY] + "-" +
+        rKeyword[NF_KEY_MM] + "-" +
+        rKeyword[NF_KEY_DD] + " " +
+        rKeyword[NF_KEY_HH] + ":" +
+        rKeyword[NF_KEY_MMI] + ":" +
+        rKeyword[NF_KEY_SS];
     ImpInsertFormat( aSingleFormatCode,
                      CLOffset + ZF_STANDARD_DATETIME+2 /* NF_DATETIME_ISO_YYYYMMDD_HHMMSS */ );
 
     // YYYY-MM-DD"T"HH:MM:SS   ISO
-    aBuf.append( rKeyword[NF_KEY_YYYY]).append('-').
-        append( rKeyword[NF_KEY_MM]).append('-').
-        append( rKeyword[NF_KEY_DD]).append("\"T\"").
-        append( rKeyword[NF_KEY_HH]).append(':').
-        append( rKeyword[NF_KEY_MMI]).append(':').
-        append( rKeyword[NF_KEY_SS]);
-    aSingleFormatCode.Code = aBuf.makeStringAndClear();
+    aSingleFormatCode.Code =
+        rKeyword[NF_KEY_YYYY] + "-" +
+        rKeyword[NF_KEY_MM] + "-" +
+        rKeyword[NF_KEY_DD] + "\"T\"" +
+        rKeyword[NF_KEY_HH] + ":" +
+        rKeyword[NF_KEY_MMI] + ":" +
+        rKeyword[NF_KEY_SS];
     SvNumberformat* pFormat = ImpInsertFormat( aSingleFormatCode,
                      CLOffset + ZF_STANDARD_DATETIME+3 /* NF_DATETIME_ISO_YYYYMMDDTHHMMSS */ );
     assert(pFormat);
diff --git a/svl/source/numbers/zformat.cxx b/svl/source/numbers/zformat.cxx
index 63a8b5d9e3ab..41db17082089 100644
--- a/svl/source/numbers/zformat.cxx
+++ b/svl/source/numbers/zformat.cxx
@@ -1647,7 +1647,7 @@ short SvNumberformat::ImpNextSymbol(OUStringBuffer& rString,
     sal_Unicode cLetter = ' '; // Preliminary result
     sal_Int32 nLen = rString.getLength();
     ScanState eState = SsStart;
-    OUStringBuffer sBuffSymbol;
+    OUStringBuffer sBuffSymbol(32);
 
     const NfKeywordTable & rKeywords = rScan.GetKeywords();
     while (nPos < nLen && eState != SsStop)
@@ -1975,7 +1975,7 @@ bool SvNumberformat::GetNewCurrencySymbol( OUString& rSymbol,
 // static
 OUString SvNumberformat::StripNewCurrencyDelimiters( const OUString& rStr )
 {
-    OUStringBuffer aTmp;
+    OUStringBuffer aTmp(rStr.getLength());
     sal_Int32 nStartPos, nPos, nLen;
     nLen = rStr.getLength();
     nStartPos = 0;