diff --git a/src/helpers/string_utils.cpp b/src/helpers/string_utils.cpp
index 86f62301..1390127c 100644
--- a/src/helpers/string_utils.cpp
+++ b/src/helpers/string_utils.cpp
@@ -1,6 +1,36 @@
 #include "string_utils.h"
 #include <cctype>
 
+namespace {
+
+void replace_substring(std::string &data, const std::string &from, const std::string &to)
+{
+	std::size_t pos = data.find(from);
+	while(pos != std::string::npos) {
+		data.replace(pos, from.size(), to);
+		pos = data.find(from, pos + to.size());
+	}
+}
+
+void escape_regex(std::string &regex)
+{
+	replace_substring(regex, "\\", "\\\\");
+	replace_substring(regex, "^", "\\^");
+	replace_substring(regex, ".", "\\.");
+	replace_substring(regex, "$", "\\$");
+	replace_substring(regex, "|", "\\|");
+	replace_substring(regex, "(", "\\(");
+	replace_substring(regex, ")", "\\)");
+	replace_substring(regex, "[", "\\[");
+	replace_substring(regex, "]", "\\]");
+	replace_substring(regex, "*", "\\*");
+	replace_substring(regex, "+", "\\+");
+	replace_substring(regex, "?", "\\?");
+	replace_substring(regex, "/", "\\/");
+}
+
+} // namespace
+
 std::string helpers::random_alphanum_string(std::size_t length)
 {
 	auto randchar = []() -> char {
@@ -23,3 +53,15 @@ void helpers::filter_non_printable_chars(std::string &text)
 			[](char c) { return !isprint(static_cast<unsigned char>(c)) && !iscntrl(static_cast<unsigned char>(c)); }),
 		text.end());
 }
+
+std::regex helpers::wildcards_regex(std::string wildcard_pattern)
+{
+	// Escape all regex special chars
+	escape_regex(wildcard_pattern);
+
+	// Convert chars '*?' back to their regex equivalents
+	replace_substring(wildcard_pattern, "\\?", ".");
+	replace_substring(wildcard_pattern, "\\*", ".*");
+
+	return std::regex(wildcard_pattern);
+}
diff --git a/src/helpers/string_utils.h b/src/helpers/string_utils.h
index f2fd682c..12a8c564 100644
--- a/src/helpers/string_utils.h
+++ b/src/helpers/string_utils.h
@@ -3,6 +3,7 @@
 
 #include <string>
 #include <algorithm>
+#include <regex>
 
 namespace helpers
 {
@@ -18,6 +19,13 @@ namespace helpers
 	 * @param text
 	 */
 	void filter_non_printable_chars(std::string &text);
+
+	/**
+	 * Constructs appropriate regular expression for given wildcard.
+	 * @param string with wildcard pattern
+	 * @return regex
+	 */
+	std::regex wildcards_regex(std::string wildcard_pattern);
 } // namespace helpers
 
 
diff --git a/src/tasks/internal/cp_task.cpp b/src/tasks/internal/cp_task.cpp
index 9d643d80..56c93b66 100644
--- a/src/tasks/internal/cp_task.cpp
+++ b/src/tasks/internal/cp_task.cpp
@@ -1,5 +1,5 @@
 #include "cp_task.h"
-#include <regex>
+#include "helpers/string_utils.h"
 #include "helpers/filesystem.h"
 
 #define BOOST_FILESYSTEM_NO_DEPRECATED
@@ -8,48 +8,6 @@
 
 namespace fs = boost::filesystem;
 
-namespace {
-
-void replace_substring(std::string &data, const std::string &from, const std::string &to)
-{
-	std::size_t pos = data.find(from);
-	while(pos != std::string::npos) {
-		data.replace(pos, from.size(), to);
-		pos = data.find(from, pos + to.size());
-	}
-}
-
-void escape_regex(std::string &regex)
-{
-	replace_substring(regex, "\\", "\\\\");
-	replace_substring(regex, "^", "\\^");
-	replace_substring(regex, ".", "\\.");
-	replace_substring(regex, "$", "\\$");
-	replace_substring(regex, "|", "\\|");
-	replace_substring(regex, "(", "\\(");
-	replace_substring(regex, ")", "\\)");
-	replace_substring(regex, "[", "\\[");
-	replace_substring(regex, "]", "\\]");
-	replace_substring(regex, "*", "\\*");
-	replace_substring(regex, "+", "\\+");
-	replace_substring(regex, "?", "\\?");
-	replace_substring(regex, "/", "\\/");
-}
-
-std::regex wildcards_regex(std::string wildcard_pattern)
-{
-	// Escape all regex special chars
-	escape_regex(wildcard_pattern);
-
-	// Convert chars '*?' back to their regex equivalents
-	replace_substring(wildcard_pattern, "\\?", ".");
-	replace_substring(wildcard_pattern, "\\*", ".*");
-
-	return std::regex(wildcard_pattern);
-}
-
-} // namespace
-
 
 cp_task::cp_task(std::size_t id, std::shared_ptr<task_metadata> task_meta) : task_base(id, task_meta)
 {
@@ -79,7 +37,7 @@ std::shared_ptr<task_results> cp_task::run()
 	fs::path input(task_meta_->cmd_args[0]);
 	auto filename_matcher = input.filename().string();
 	auto base_dir = input.remove_filename();
-	auto pattern = wildcards_regex(filename_matcher);
+	auto pattern = helpers::wildcards_regex(filename_matcher);
 
 	// parse output path and check if it is existing directory or not
 	fs::path output(task_meta_->cmd_args[1]);