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Use regexp to skip schema matches not preceded by allowed separator

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This commit is contained in:
cketti 2017-03-17 15:26:08 +01:00
parent 98974a7699
commit cf9c3d078e
1 changed files with 6 additions and 19 deletions
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25
k9mail/src/main/java/com/fsck/k9/message/html/UriLinkifier.java
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@ -13,7 +13,8 @@ import android.text.TextUtils;
public class UriLinkifier {
private static final Pattern URI_SCHEME;
private static final Map<String, UriParser> SUPPORTED_URIS;
private static final String SCHEME_SEPARATOR = " (";
private static final String SCHEME_SEPARATORS = " (";
private static final String ALLOWED_SEPARATORS_PATTERN = "(?:^|[" + SCHEME_SEPARATORS + "])";
static {
SUPPORTED_URIS = new HashMap<>();
@ -24,7 +25,8 @@ public class UriLinkifier {
SUPPORTED_URIS.put("rtsp:", httpParser);
String allSchemes = TextUtils.join("|", SUPPORTED_URIS.keySet());
URI_SCHEME = Pattern.compile(allSchemes, Pattern.CASE_INSENSITIVE);
String pattern = ALLOWED_SEPARATORS_PATTERN + "(" + allSchemes + ")";
URI_SCHEME = Pattern.compile(pattern, Pattern.CASE_INSENSITIVE);
}
@ -33,18 +35,12 @@ public class UriLinkifier {
Matcher matcher = URI_SCHEME.matcher(text);
while (matcher.find(currentPos)) {
int startPos = matcher.start();
int startPos = matcher.start(1);
String textBeforeMatch = text.substring(currentPos, startPos);
outputBuffer.append(textBeforeMatch);
if (!isPrecededByValidSeparator(textBeforeMatch)) {
outputBuffer.append(text.charAt(startPos));
currentPos = startPos + 1;
continue;
}
String scheme = matcher.group().toLowerCase(Locale.US);
String scheme = matcher.group(1).toLowerCase(Locale.US);
UriParser parser = SUPPORTED_URIS.get(scheme);
int newPos = parser.linkifyUri(text, startPos, outputBuffer);
@ -64,13 +60,4 @@ public class UriLinkifier {
String textAfterLastMatch = text.substring(currentPos);
outputBuffer.append(textAfterLastMatch);
}
private static boolean isPrecededByValidSeparator(String textBeforeMatch) {
if (textBeforeMatch.isEmpty()) {
return true;
}
String characterBeforeMatch = textBeforeMatch.substring(textBeforeMatch.length() - 1);
return SCHEME_SEPARATOR.contains(characterBeforeMatch);
}
}