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authormcentner <mcentner@8a26b1a7-26f0-462f-b9ef-d0e30c41f5a4>2008-09-12 13:50:31 +0000
committermcentner <mcentner@8a26b1a7-26f0-462f-b9ef-d0e30c41f5a4>2008-09-12 13:50:31 +0000
commit9f441a0aaf0e55b50014e814410c61117f7330c4 (patch)
treee3662a76dfd40d5d8f0c31503dd0c7ec6f148c3d /BKUViewer/src/main/java/at
parent3794536434fdbb06067eddcfd248898ce85f85a1 (diff)
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Add text validation.
git-svn-id: https://joinup.ec.europa.eu/svn/mocca/trunk@35 8a26b1a7-26f0-462f-b9ef-d0e30c41f5a4
Diffstat (limited to 'BKUViewer/src/main/java/at')
-rw-r--r--BKUViewer/src/main/java/at/gv/egiz/bku/text/TextValidator.java77
1 files changed, 76 insertions, 1 deletions
diff --git a/BKUViewer/src/main/java/at/gv/egiz/bku/text/TextValidator.java b/BKUViewer/src/main/java/at/gv/egiz/bku/text/TextValidator.java
index 5108140d..485aa727 100644
--- a/BKUViewer/src/main/java/at/gv/egiz/bku/text/TextValidator.java
+++ b/BKUViewer/src/main/java/at/gv/egiz/bku/text/TextValidator.java
@@ -16,17 +16,92 @@
*/
package at.gv.egiz.bku.text;
+import java.io.IOException;
import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.io.UnsupportedEncodingException;
+import java.nio.CharBuffer;
+import java.nio.charset.Charset;
+import java.nio.charset.IllegalCharsetNameException;
+import java.nio.charset.UnsupportedCharsetException;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
import at.gv.egiz.bku.viewer.ValidationException;
import at.gv.egiz.bku.viewer.Validator;
public class TextValidator implements Validator {
+ /**
+ * Logging facility.
+ */
+ protected static Log log = LogFactory.getLog(TextValidator.class);
+
+ private void invalid(char c) throws ValidationException {
+ log.info("Invalid character (0x" + Integer.toHexString(c) + ") found.");
+ // TODO: localize
+ throw new ValidationException();
+ }
+
@Override
public void validate(InputStream is, String charset)
throws ValidationException {
- // TODO: implement character validation
+
+ InputStreamReader reader;
+ if (charset != null) {
+ try {
+ reader = new InputStreamReader(is, charset);
+ } catch (UnsupportedEncodingException e) {
+ log.info("Charset '" + charset + "' not supported.", e);
+ // TODO: localize
+ throw new ValidationException(e);
+ }
+ } else {
+ reader = new InputStreamReader(is, Charset.forName("UTF-8"));
+ }
+
+ try {
+ char c;
+ CharBuffer cb = CharBuffer.allocate(256);
+ for (int l; (l = reader.read(cb)) != -1;) {
+ cb.flip();
+ for (int i = 0; i < l; i++) {
+ c = cb.get();
+ if (c < '\u0020') {
+ // C0 Controls and Basic Latin (0x000C-0x000D)
+ if (c > '\r') invalid(c); if (c >= '\u000C') continue;
+ // C0 Controls and Basic Latin (0x0009-0x000A)
+ if (c > '\n') invalid(c); if (c >= '\t') continue;
+ invalid(c);
+ } else {
+ // C0 Controls and Basic Latin (0x0020-0x007E)
+ if (c <= '\u007E') continue;
+ // C1 Controls and Latin-1 Supplement (0x00A1-0x00FF)
+ if (c < '\u00A1') invalid(c); if (c <= '\u00FF') continue;
+ // Latin Extended-A (0x0100-0x017F)
+ if (c < '\u0100') invalid(c); if (c <= '\u017F') continue;
+ // EURO Sign
+ if (c == '\u20AC') continue;
+ // Spacing Modifier Letters
+ if (c == '\u02C7') continue;
+ if (c == '\u02D8') continue;
+ if (c == '\u02D9') continue;
+ if (c == '\u02DB') continue;
+ if (c == '\u02DD') continue;
+ if (c == '\u2015') continue;
+ invalid(c);
+ }
+ }
+ }
+ cb.clear();
+ } catch (IOException e) {
+ // TODO: localize
+ throw new ValidationException(e);
+ }
+
+
+
}
}