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Fixed Issue 449: Uncaught exception from Excel importer.

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git-svn-id: http://google-refine.googlecode.com/svn/trunk@2245 7d457c2a-affb-35e4-300a-418c747d4874
This commit is contained in:
David Huynh 2011-09-19 08:49:35 +00:00
parent 4c5b2514fd
commit 66cf0b6596
1 changed files with 14 additions and 3 deletions
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17
main/src/com/google/refine/importers/TextFormatGuesser.java
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@ -22,17 +22,28 @@ public class TextFormatGuesser implements FormatGuesser {
int totalBytes = 0; int totalBytes = 0;
int bytes; int bytes;
int lineBreaks = 0; int openBraces = 0;
int closeBraces = 0;
int openAngleBrackets = 0;
int closeAngleBrackets = 0;
CharBuffer charBuffer = CharBuffer.allocate(4096); CharBuffer charBuffer = CharBuffer.allocate(4096);
while (totalBytes < 64 * 1024 && (bytes = reader.read(charBuffer)) > 0) { while (totalBytes < 64 * 1024 && (bytes = reader.read(charBuffer)) > 0) {
lineBreaks += countSubstrings(charBuffer.toString(), "\n"); String chunk = charBuffer.toString();
openBraces += countSubstrings(chunk, "{");
closeBraces += countSubstrings(chunk, "}");
openAngleBrackets += countSubstrings(chunk, "<");
closeAngleBrackets += countSubstrings(chunk, ">");
charBuffer.clear(); charBuffer.clear();
totalBytes += bytes; totalBytes += bytes;
} }
if (lineBreaks > 3) { if (openBraces >= 5 && closeBraces >= 5) {
return "text/json";
} else if (openAngleBrackets >= 5 && closeAngleBrackets >= 5) {
return "text/xml";
} else {
return "text/line-based"; return "text/line-based";
} }
} finally { } finally {