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Small improvements, refactoring

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M66B
2019-09-26 12:11:46 +02:00
parent 0d6edc2bfb
commit e6e0a00767
6 changed files with 66 additions and 56 deletions
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25
app/src/main/java/eu/faircode/email/MessageHelper.java
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@@ -1266,6 +1266,31 @@ public class MessageHelper {
"Unable to load BODYSTRUCTURE".equals(ex.getMessage()));
}
static String sanitizeKeyword(String keyword) {
// https://tools.ietf.org/html/rfc3501
StringBuilder sb = new StringBuilder();
for (int i = 0; i < keyword.length(); i++) {
// flag-keyword = atom
// atom = 1*ATOM-CHAR
// ATOM-CHAR = <any CHAR except atom-specials>
char kar = keyword.charAt(i);
// atom-specials = "(" / ")" / "{" / SP / CTL / list-wildcards / quoted-specials / resp-specials
if (kar == '(' || kar == ')' || kar == '{' || kar == ' ' || Character.isISOControl(kar))
continue;
// list-wildcards = "%" / "*"
if (kar == '%' || kar == '*')
continue;
// quoted-specials = DQUOTE / "\"
if (kar == '"' || kar == '\\')
continue;
// resp-specials = "]"
if (kar == ']')
continue;
sb.append(kar);
}
return sb.toString();
}
static boolean equal(Address[] a1, Address[] a2) {
if (a1 == null && a2 == null)
return true;