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GUACAMOLE-1081: Implement token modifiers for upper and lower case.

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Virtually Nick
2020-05-25 19:47:02 -04:00
parent e4aa6bd451
commit e216f83c49
2 changed files with 53 additions and 6 deletions
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39
guacamole-ext/src/main/java/org/apache/guacamole/token/TokenFilter.java
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@@ -39,7 +39,7 @@ public class TokenFilter {
* escape character preceding the token, the name of the token, and the
* entire token itself.
*/
private final Pattern tokenPattern = Pattern.compile("(.*?)(^|.)(\\$\\{([A-Za-z0-9_]*)\\})");
private final Pattern tokenPattern = Pattern.compile("(.*?)(^|.)(\\$\\{([A-Za-z0-9_]*)(\\:(.*))?\\})");
/**
* The index of the capturing group within tokenPattern which matches
@@ -66,6 +66,12 @@ public class TokenFilter {
*/
private static final int TOKEN_NAME_GROUP = 4;
/**
* The index of the capturing group within tokenPattern which matches the
* string of the actual modifier for the token.
*/
private static final int TOKEN_MODIFIER = 6;
/**
* The values of all known tokens.
*/
@@ -182,6 +188,7 @@ public class TokenFilter {
// Pull possible leading text and first char before possible token
String literal = tokenMatcher.group(LEADING_TEXT_GROUP);
String escape = tokenMatcher.group(ESCAPE_CHAR_GROUP);
String modifier = tokenMatcher.group(TOKEN_MODIFIER);
// Append leading non-token text
output.append(literal);
@@ -208,9 +215,33 @@ public class TokenFilter {
output.append(notToken);
}
// Otherwise, substitute value
else
output.append(tokenValue);
// Otherwise, check for modifiers and substitute value appropriately
else {
// If a modifier is present, try to use it.
if (modifier != null && !modifier.isEmpty()) {
switch (modifier) {
// Switch token to upper-case
case "upper":
output.append(tokenValue.toUpperCase());
break;
// Switch token to lower case
case "lower":
output.append(tokenValue.toLowerCase());
break;
// Just append the token value
default:
output.append(tokenValue);
}
}
// No modifier present, so just append token value.
else
output.append(tokenValue);
}
}