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fpspreadsheet: Add some forgotten comments on xls format detection

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git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@3878 8e941d3f-bd1b-0410-a28a-d453659cc2b4
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wp_xxyyzz
2015-01-08 17:49:00 +00:00
parent f1d5a14660
commit f1bdde968a
1 changed files with 4 additions and 0 deletions
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4
components/fpspreadsheet/fpspreadsheet.pas
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@ -6782,9 +6782,12 @@ begin
if not FileExists(AFileName) then
raise Exception.CreateFmt(rsFileNotFound, [AFileName]);
// .xls files can contain several formats. We look into the header first.
if Lowercase(ExtractFileExt(AFileName))=STR_EXCEL_EXTENSION then
begin
valid := GetFormatFromFileHeader(AFileName, SheetType);
// It is possible that valid xls files are not detected correctly. Therefore,
// we open them explicitly by trial and error - see below.
if not valid then
SheetType := sfExcel8;
valid := true;
@ -6795,6 +6798,7 @@ begin
begin
if SheetType = sfExcel8 then
begin
// Here is the trial-and-error loop checking for the various biff formats.
while True do
begin
try