(Feat): Initial Commit

internal/util/db/ts_vector.go

@@ -0,0 +1,28 @@
+package db
+
+import (
+	"regexp"
+	"strings"
+)
+
+var (
+	tsQueryWhiteSpaceRegex = regexp.MustCompile(`\s+`)
+)
+
+// SearchStringToTSQuery returns a TSQuery string from user input.
+// The resulting query will match if every word matches a beginning of a word in the row.
+// This function will trim all leading and trailing as well as consecutive whitespaces and remove all single quotes before
+// transforming the input into TSQuery syntax.
+// If no input was given (nil or empty string) or the value only contains invalid characters, an empty string will be returned.
+func SearchStringToTSQuery(s *string) string {
+	if s == nil || len(*s) == 0 {
+		return ""
+	}
+
+	v := strings.TrimSpace(strings.ReplaceAll(*s, "'", ""))
+	if len(v) == 0 {
+		return ""
+	}
+
+	return "'" + tsQueryWhiteSpaceRegex.ReplaceAllString(v, "':* & '") + "':*"
+}