+
+bool scopeMatch(const QString &string, const QString &scopeRule, const bool &isRegEx,
+ const bool &isCaseSensitive)
+{
+ // When isRegEx is false:
+ // A match happens when the string does NOT match ANY inverted rules and matches AT LEAST one
+ // normal rule, unless no normal rules exist (implicit wildcard match). This gives inverted
+ // rules higher priority regardless of ordering.
+ //
+ // When isRegEx is true:
+ // A match happens when the normal regular expression matches. If prefixed with '!', the match
+ // happens UNLESS the following regular expression matches.
+
+ // TODO: After switching to Qt 5, use of this should be split into two parts, one part that
+ // would generate compiled QRegularExpressions for match/inverted match, regenerating it on any
+ // rule changes, and another part that would check each message against these compiled rules.
+
+ // Cache case sensitivity
+ Qt::CaseSensitivity ruleExactCase = (isCaseSensitive ? Qt::CaseSensitive : Qt::CaseInsensitive);
+
+ if (isRegEx) {
+ // Regular expression tests
+ // -------
+ // Check if this is an inverted rule (starts with '!')
+ if (scopeRule.startsWith("!")) {
+ // Take the reminder of the string
+ QRegExp ruleRx(scopeRule.mid(1), ruleExactCase);
+ // Matching an inverted rule: matched (true) implies rule failure (false)
+ return !ruleRx.exactMatch(string);
+ } else {
+ QRegExp ruleRx(scopeRule, ruleExactCase);
+ // Matching a normal rule: matched (true) implies rule success (true)
+ return ruleRx.exactMatch(string);
+ }
+ } else {
+ // Wildcard expression tests
+ // -------
+ // Keep track if any matches are found
+ bool matches = false;
+ // Keep track if normal rules and inverted rules are found, allowing for implicit wildcard
+ bool normalRuleFound = false, invertedRuleFound = false;
+
+ // Split each scope rule by separator, ignoring empty parts
+ foreach(QString rule, scopeRule.split(";", QString::SkipEmptyParts)) {
+ // Trim whitespace from the start/end of the rule
+ rule = rule.trimmed();
+ // Ignore empty rules
+ if (rule.isEmpty())
+ continue;
+
+ // Check if this is an inverted rule (starts with '!')
+ if (rule.startsWith("!")) {
+ // Inverted rule found
+ invertedRuleFound = true;
+
+ // Take the reminder of the string
+ QRegExp ruleRx(rule.mid(1), ruleExactCase);
+ ruleRx.setPatternSyntax(QRegExp::Wildcard);
+ if (ruleRx.exactMatch(string)) {
+ // Matches an inverted rule, full rule cannot match
+ return false;
+ }
+ } else {
+ // Normal rule found
+ normalRuleFound = true;
+
+ QRegExp ruleRx(rule, ruleExactCase);
+ ruleRx.setPatternSyntax(QRegExp::Wildcard);
+ if (ruleRx.exactMatch(string)) {
+ // Matches a normal rule, full rule might match
+ matches = true;
+ // Continue checking in case other inverted rules negate this
+ }
+ }
+ }
+ // No inverted rules matched, okay to match normally
+ // Return true if...
+ // ...we found a normal match
+ // ...implicit wildcard: we had inverted rules (that didn't match) and no normal rules
+ return matches || (invertedRuleFound && !normalRuleFound);
+ }