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@@ -23,9 +23,16 @@ import org.apache.poi.xssf.model.StylesTable; |
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/** |
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* Handles data formats for XSSF. |
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* |
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* Per Microsoft Excel 2007+ format limitations: |
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* Workbooks support between 200 and 250 "number formats" |
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* (POI calls them "data formats") So short or even byte |
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* would be acceptable data types to use for referring to |
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* data format indices. |
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* https://support.office.com/en-us/article/excel-specifications-and-limits-1672b34d-7043-467e-8e27-269d656771c3 |
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* |
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*/ |
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public class XSSFDataFormat implements DataFormat { |
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private StylesTable stylesSource; |
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private final StylesTable stylesSource; |
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protected XSSFDataFormat(StylesTable stylesSource) { |
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this.stylesSource = stylesSource; |
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@@ -36,9 +43,10 @@ public class XSSFDataFormat implements DataFormat { |
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* string, creating a new format entry if required. |
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* Aliases text to the proper format as required. |
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* |
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* @param format string matching a built in format |
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* @param format string matching a built-in format |
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* @return index of format. |
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*/ |
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@Override |
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public short getFormat(String format) { |
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int idx = BuiltinFormats.getBuiltinFormat(format); |
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if(idx == -1) idx = stylesSource.putNumberFormat(format); |
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@@ -48,17 +56,24 @@ public class XSSFDataFormat implements DataFormat { |
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/** |
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* get the format string that matches the given format index |
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* @param index of a format |
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* @return string represented at index of format or null if there is not a format at that index |
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* @return string represented at index of format or <code>null</code> if there is not a format at that index |
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*/ |
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@Override |
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public String getFormat(short index) { |
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return getFormat(index&0xffff); |
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} |
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/** |
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* get the format string that matches the given format index |
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* @param index of a format |
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* @return string represented at index of format or null if there is not a format at that index |
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* @return string represented at index of format or <code>null</code> if there is not a format at that index |
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*/ |
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public String getFormat(int index) { |
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// Indices used for built-in formats may be overridden with |
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// custom formats, such as locale-specific currency. |
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// See org.apache.poi.xssf.usermodel.TestXSSFDataFormat#test49928() |
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// or bug 49928 for an example. |
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// This is why we need to check stylesSource first and only fall back to |
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// BuiltinFormats if the format hasn't been overridden. |
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String fmt = stylesSource.getNumberFormatAt(index); |
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if(fmt == null) fmt = BuiltinFormats.getBuiltinFormat(index); |
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return fmt; |