Bug 66425: Avoid exceptions found via poi-fuzz

Capture and report integer overflow as normal
parsing/format exceptions

Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=63628

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1914401 13f79535-47bb-0310-9956-ffa450edef68

poi-examples/src/main/java/org/apache/poi/examples/xssf/eventusermodel/XLSX2CSV.java

@@ -212,7 +212,7 @@ public class XLSX2CSV {
                   styles, null, strings, sheetHandler, formatter, false);
             sheetParser.setContentHandler(handler);
             sheetParser.parse(sheetSource);
-         } catch(ParserConfigurationException e) {
+         } catch (ParserConfigurationException e) {
             throw new RuntimeException("SAX parser appears to be broken - " + e.getMessage());
          }
     }
@@ -234,7 +234,12 @@ public class XLSX2CSV {
                 String sheetName = iter.getSheetName();
                 this.output.println();
                 this.output.println(sheetName + " [index=" + index + "]:");
+
+                try {
                     processSheet(styles, strings, new SheetToCSV(), stream);
+                } catch (NumberFormatException e) {
+                    throw new IOException("Failed to parse sheet " + sheetName, e);
+                }
             }
             ++index;
         }

poi-ooxml/src/main/java/org/apache/poi/xssf/extractor/XSSFEventBasedExcelExtractor.java

@@ -289,7 +289,7 @@ public class XSSFEventBasedExcelExtractor
             }
 
             return text.toString();
-        } catch (IOException | OpenXML4JException | SAXException e) {
+        } catch (IOException | OpenXML4JException | SAXException | NumberFormatException e) {
             LOGGER.atWarn().withThrowable(e).log("Failed to load text");
             return "";
         }

poi-ooxml/src/main/java/org/apache/poi/xssf/usermodel/XSSFSheet.java

@@ -146,7 +146,7 @@ public class XSSFSheet extends POIXMLDocumentPart implements Sheet, OoxmlSheetEx
     protected void onDocumentRead() {
         try (InputStream stream = getPackagePart().getInputStream()) {
             read(stream);
-        } catch (IOException e){
+        } catch (IOException | ArithmeticException e){
             throw new POIXMLException(e);
         }
     }