TextFilterNode: Add StartsWith and EndsWith to StringMatch

There is no method for parsing these operators from a search query yet.
At this stage, they are present purely for supporting all fields and
operators already present in mixxxdj#14182.

src/library/searchquery.cpp

@@ -197,6 +197,14 @@ bool TextFilterNode::match(const TrackPointer& pTrack) const {
             if (strValue == m_argument) {
                 return true;
             }
+        } else if (m_matchMode == StringMatch::StartsWith) {
+            if (strValue.startsWith(m_argument)) {
+                return true;
+            }
+        } else if (m_matchMode == StringMatch::EndsWith) {
+            if (strValue.endsWith(m_argument)) {
+                return true;
+            }
         } else {
             if (strValue.contains(m_argument)) {
                 return true;
@@ -223,6 +231,14 @@ QString TextFilterNode::toSql() const {
         escapedArgument = escaper.escapeString(
                 kSqlLikeMatchAll + argument + kSqlLikeMatchAll);
         break;
+    case StringMatch::StartsWith:
+        escapedArgument = escaper.escapeString(
+                kSqlLikeMatchAll + argument);
+        break;
+    case StringMatch::EndsWith:
+        escapedArgument = escaper.escapeString(
+                argument + kSqlLikeMatchAll);
+        break;
     case StringMatch::Equals:
         escapedArgument = escaper.escapeString(argument);
         break;

src/library/searchquery.h

@@ -21,6 +21,8 @@ const QString kMissingFieldSearchTerm = "\"\""; // "" searches for an empty stri
 enum class StringMatch {
     Contains = 0,
     Equals,
+    StartsWith,
+    EndsWith,
 };
 
 class QueryNode {