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The following commit(s) were added to refs/heads/master by this push:
new 66a09219 Update fold method in MimeUtil to allow inputing max
characters
66a09219 is described below
commit 66a09219457854c7a26e5b7c0e4c9dd59b4b0c32
Author: hung phan <[email protected]>
AuthorDate: Tue Nov 5 15:07:25 2024 +0700
Update fold method in MimeUtil to allow inputing max characters
---
.../org/apache/james/mime4j/util/MimeUtil.java | 38 ++++++++++++++++++----
.../org/apache/james/mime4j/util/MimeUtilTest.java | 23 ++++++++-----
2 files changed, 46 insertions(+), 15 deletions(-)
diff --git a/core/src/main/java/org/apache/james/mime4j/util/MimeUtil.java
b/core/src/main/java/org/apache/james/mime4j/util/MimeUtil.java
index 46e71e4d..9c4655fe 100644
--- a/core/src/main/java/org/apache/james/mime4j/util/MimeUtil.java
+++ b/core/src/main/java/org/apache/james/mime4j/util/MimeUtil.java
@@ -73,6 +73,10 @@ public final class MimeUtil {
* The <code>7bit</code> encoding.
*/
public static final String ENC_7BIT = "7bit";
+ /**
+ * The default maximum number of characters.
+ */
+ public static final int DEFAULT_MAX_CHARACTERS = 76;
// used to create unique ids
private static final Random random = new Random();
@@ -203,10 +207,10 @@ public final class MimeUtil {
/**
* Splits the specified string into a multiple-line representation with
- * lines no longer than 76 characters (because the line might contain
+ * lines no longer than the maximum number of characters (because the line
might contain
* encoded words; see <a href='http://www.faqs.org/rfcs/rfc2047.html'>RFC
* 2047</a> section 2). If the string contains non-whitespace sequences
- * longer than 76 characters a line break is inserted at the whitespace
+ * longer than the maximum number of characters a line break is inserted
at the whitespace
* character following the sequence resulting in a line longer than 76
* characters.
*
@@ -215,11 +219,11 @@ public final class MimeUtil {
* @param usedCharacters
* number of characters already used up. Usually the number of
* characters for header field name plus colon and one space.
+ * @param maxCharacters
+ * maximum number of characters
* @return a multiple-line representation of the given string.
*/
- public static String fold(String s, int usedCharacters) {
- final int maxCharacters = 76;
-
+ public static String fold(String s, int usedCharacters, int maxCharacters)
{
final int length = s.length();
if (usedCharacters + length <= maxCharacters)
return s;
@@ -246,6 +250,26 @@ public final class MimeUtil {
}
}
+ /**
+ * Splits the specified string into a multiple-line representation with
+ * lines no longer than 76 characters (because the line might contain
+ * encoded words; see <a href='http://www.faqs.org/rfcs/rfc2047.html'>RFC
+ * 2047</a> section 2). If the string contains non-whitespace sequences
+ * longer than 76 characters a line break is inserted at the whitespace
+ * character following the sequence resulting in a line longer than 76
+ * characters.
+ *
+ * @param s
+ * string to split.
+ * @param usedCharacters
+ * number of characters already used up. Usually the number of
+ * characters for header field name plus colon and one space.
+ * @return a multiple-line representation of the given string.
+ */
+ public static String fold(String s, int usedCharacters) {
+ return fold(s, usedCharacters, DEFAULT_MAX_CHARACTERS);
+ }
+
/**
* Unfold a multiple-line representation into a single line.
*
@@ -266,7 +290,7 @@ public final class MimeUtil {
}
/**
- Unfold and decode header value
+ Unfold and decode header value
*/
public static String unscrambleHeaderValue(String headerValue) {
return DecoderUtil.decodeEncodedWords(
@@ -364,4 +388,4 @@ public final class MimeUtil {
result.put(7L, "Sun");
return result;
}
-}
+}
\ No newline at end of file
diff --git a/core/src/test/java/org/apache/james/mime4j/util/MimeUtilTest.java
b/core/src/test/java/org/apache/james/mime4j/util/MimeUtilTest.java
index e24ae809..de69e745 100644
--- a/core/src/test/java/org/apache/james/mime4j/util/MimeUtilTest.java
+++ b/core/src/test/java/org/apache/james/mime4j/util/MimeUtilTest.java
@@ -25,23 +25,30 @@ import org.junit.Test;
public class MimeUtilTest {
@Test
- public void testFold() throws Exception {
+ public void testFold() {
+ Assert.assertEquals("this\r\n is\r\n a\r\n test", MimeUtil.fold("this
is a test", 0, 4));
+ Assert.assertEquals("this\r\n is a\r\n test", MimeUtil.fold("this is a
test", 0, 5));
+ Assert.assertEquals("this\r\n is\r\n a\r\n test", MimeUtil.fold("this
is a test", 1, 4));
+ }
+
+ @Test
+ public void testFoldWithDefaultMaxCharacters() {
Assert.assertEquals("this is\r\n a test", MimeUtil.fold("this is a
test", 68));
Assert.assertEquals("this is\r\n a test", MimeUtil.fold("this is a
test", 69));
Assert.assertEquals("this\r\n is a test", MimeUtil.fold("this is a
test", 70));
Assert.assertEquals("this \r\n is a test", MimeUtil.fold(
- "this is a test", 70));
+ "this is a test", 70));
}
@Test
public void testFoldOverlyLongNonWhitespace() throws Exception {
String ninety = "1234567890123456789012345678901234567890"
- + "12345678901234567890123456789012345678901234567890";
+ + "12345678901234567890123456789012345678901234567890";
String input = String.format("testing 1 2 %s testing %s", ninety,
- ninety);
+ ninety);
String expected = String.format(
- "testing 1 2\r\n %s\r\n testing\r\n %s", ninety, ninety);
+ "testing 1 2\r\n %s\r\n testing\r\n %s", ninety, ninety);
Assert.assertEquals(expected, MimeUtil.fold(input, 0));
}
@@ -65,10 +72,10 @@ public class MimeUtilTest {
Assert.assertEquals("this is a test", MimeUtil.unfold("this is\r\n a
test"));
Assert.assertEquals("this is a test", MimeUtil.unfold("this\r\n is a
test"));
Assert.assertEquals("this is a test", MimeUtil
- .unfold("this \r\n is a test"));
+ .unfold("this \r\n is a test"));
Assert.assertEquals("this is a test", MimeUtil
- .unfold("this\r\n is\r\n a\r\n test"));
+ .unfold("this\r\n is\r\n a\r\n test"));
}
-}
+}
\ No newline at end of file
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