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Code Issues Releases Wiki Activity

Fold mime

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This commit is contained in:
M66B 2019-07-18 16:42:20 +02:00
parent e65317bbe7
commit 463c59650c
1 changed files with 66 additions and 13 deletions
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79
app/src/main/java/eu/faircode/email/MessageHelper.java
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@ -35,7 +35,6 @@ import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.util.ArrayList;
@ -745,6 +744,9 @@ public class MessageHelper {
// encoded-word = "=?" charset "?" encoding "?" encoded-text "?="
int i = 0;
boolean first = true;
List<MimeTextPart> parts = new ArrayList<>();
while (i < text.length()) {
int s = text.indexOf("=?", i);
if (s < 0)
@ -762,20 +764,71 @@ public class MessageHelper {
if (e < 0)
break;
String encoded = text.substring(s, e + 2);
try {
String decoded = MimeUtility.decodeWord(encoded);
text = text.substring(0, s).replaceAll("[ \t\n\r]$", "") + decoded + text.substring(e + 2);
} catch (ParseException ex) {
Log.w(new IllegalArgumentException(text, ex));
i += encoded.length();
} catch (UnsupportedEncodingException ex) {
Log.w(new IllegalArgumentException(text, ex));
i += encoded.length();
}
String plain = text.substring(i, s);
if (!first)
plain = plain.replaceAll("[ \t\n\r]$", "");
if (!TextUtils.isEmpty(plain))
parts.add(new MimeTextPart(plain));
parts.add(new MimeTextPart(
text.substring(s + 2, q1),
text.substring(q1 + 1, q2),
text.substring(q2 + 1, e)));
i = e + 2;
first = false;
}
return text;
if (i < text.length())
parts.add(new MimeTextPart(text.substring(i)));
// Fold words to not break encoding
int p = 0;
while (p + 1 < parts.size()) {
MimeTextPart p1 = parts.get(p);
MimeTextPart p2 = parts.get(p + 1);
if (p1.charset != null && p1.charset.equalsIgnoreCase(p2.charset) &&
p1.encoding != null && p1.encoding.equalsIgnoreCase(p2.encoding)) {
p1.text += p2.text;
parts.remove(p + 1);
} else
p++;
}
StringBuilder sb = new StringBuilder();
for (MimeTextPart part : parts)
sb.append(part);
return sb.toString();
}
private static class MimeTextPart {
String charset;
String encoding;
String text;
MimeTextPart(String text) {
this.text = text;
}
MimeTextPart(String charset, String encoding, String text) {
this.charset = charset;
this.encoding = encoding;
this.text = text;
}
@Override
public String toString() {
if (charset == null)
return text;
String word = "=?" + charset + "?" + encoding + "?" + text + "?=";
try {
return decodeMime(MimeUtility.decodeWord(word));
} catch (Throwable ex) {
Log.w(new IllegalArgumentException(word, ex));
return word;
}
}
}
static String getSortKey(Address[] addresses) {