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bug 50955 - add logging per Javen's recommendation. Thank you! 

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1791021 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Tim Allison 2017-04-11 20:00:12 +00:00
parent 9412d467f3
commit 0ddc4da7e2
1 changed files with 28 additions and 15 deletions
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43
src/scratchpad/src/org/apache/poi/hwpf/HWPFOldDocument.java
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@ -44,6 +44,8 @@ import org.apache.poi.poifs.filesystem.POIFSFileSystem;
import org.apache.poi.util.CodePageUtil;
import org.apache.poi.util.LittleEndian;
import org.apache.poi.util.NotImplemented;
import org.apache.poi.util.POILogFactory;
import org.apache.poi.util.POILogger;
import org.apache.poi.util.StringUtil;
/**
@ -52,6 +54,9 @@ import org.apache.poi.util.StringUtil;
*/
public class HWPFOldDocument extends HWPFDocumentCore {
private static final POILogger logger = POILogFactory
.getLogger( HWPFOldDocument.class );
private final static Charset DEFAULT_CHARSET = StringUtil.WIN_1252;
private OldTextPieceTable tpt;
@ -110,6 +115,7 @@ public class HWPFOldDocument extends HWPFDocumentCore {
//if there was a problem with the guessed charset and the length of the
//textpiece, back off to win1252. This is effectively what we used to do.
tp = buildTextPiece(StringUtil.WIN_1252);
logger.log(POILogger.WARN, "Error with "+guessedCharset +". Backing off to Windows-1252");
}
tpt.add(tp);
@ -181,9 +187,9 @@ public class HWPFOldDocument extends HWPFDocumentCore {
/**
* Take the first codepage that is not default, ansi or symbol.
* Ideally, we'd want to track fonts with runs, but we don't yet
* know how to do that.
* Try to get the code page from various areas of the document.
* Start with the DocumentSummaryInformation, back off to the section info,
* finally try the charset information from the font table.
*
* Consider throwing an exception if > 1 unique codepage that is not default, symbol or ansi
* appears here.
@ -198,26 +204,30 @@ public class HWPFOldDocument extends HWPFDocumentCore {
CustomProperties customProperties = summaryInformation.getCustomProperties();
if (customProperties != null) {
int codePage = customProperties.getCodepage();
try {
return Charset.forName(CodePageUtil.codepageToEncoding(codePage));
} catch (UnsupportedEncodingException e) {
//swallow
if (codePage > -1) {
try {
return Charset.forName(CodePageUtil.codepageToEncoding(codePage));
} catch (UnsupportedEncodingException e) {
//swallow
}
}
}
//for now, try to get first valid code page in a valid section
//If that didn't work, for now, try to get first valid code page in a valid section
for (Section section : summaryInformation.getSections()) {
if (section.getOffset() < 0) {
continue;
}
int codePage = section.getCodepage();
try {
return Charset.forName(CodePageUtil.codepageToEncoding(codePage));
} catch (UnsupportedEncodingException e) {
//swallow
if (codePage > -1) {
try {
return Charset.forName(CodePageUtil.codepageToEncoding(codePage));
} catch (UnsupportedEncodingException e) {
//swallow
}
}
}
}
//if that still doesn't work, pick the first non-default non symbol charset
//if that still doesn't work, pick the first non-default, non-symbol charset
for (OldFfn oldFfn : fontTable.getFontNames()) {
HwmfFont.WmfCharset wmfCharset = HwmfFont.WmfCharset.valueOf(oldFfn.getChs()& 0xff);
if (wmfCharset != null &&
@ -227,6 +237,8 @@ public class HWPFOldDocument extends HWPFDocumentCore {
return wmfCharset.getCharset();
}
}
logger.log(POILogger.WARN, "Couldn't find a defined charset; backing off to cp1252");
//if all else fails
return DEFAULT_CHARSET;
}
@ -282,8 +294,9 @@ public class HWPFOldDocument extends HWPFDocumentCore {
}
/**
* As a rough heuristic (total hack), read through the font table
* and take the first non-default, non-ansi, non-symbol
* As a rough heuristic (total hack), read through the HPSF,
* then read through the font table, and take the first
* non-default, non-ansi, non-symbol
* font's charset and return that.
*
* Once we figure out how to link a font to a text piece, we should