WIP

slsSupportLib/include/sls/string_utils.h

@@ -53,4 +53,7 @@ std::vector<std::string> split(const std::string &strToSplit, char delimeter);
 std::string RemoveUnit(std::string &str);
 
 bool is_int(const std::string &s);
+
+bool replace_first(std::string *s, const std::string& substr, const std::string& repl);
+
 } // namespace sls

slsSupportLib/src/string_utils.cpp

@@ -36,4 +36,14 @@ bool is_int(const std::string &s) {
                          }) == s.end();
 }
 
+bool replace_first(std::string *s, const std::string& substr, const std::string& repl){
+    auto pos = s->find(substr);
+    if (pos != std::string::npos){
+        s->replace(pos, substr.size(), repl);
+        return true;
+    }
+    return false;
+}
+
+
 }; // namespace sls

slsSupportLib/tests/test-string_utils.cpp

@@ -76,4 +76,33 @@ TEST_CASE("Check is string is integer") {
     REQUIRE_FALSE(sls::is_int(""));
 }
 
+
+TEST_CASE("Replace substring in string"){
+    std::string s = "this string should be replaced";
+    auto r = sls::replace_first(&s, "string ", "");
+    REQUIRE(r == true);
+    REQUIRE(s == "this should be replaced");
+}
+
+TEST_CASE("Replace --help in command"){
+    std::string s = "sls_detector_get --help exptime";
+    auto r = sls::replace_first(&s, " --help", "");
+    REQUIRE(r == true);
+    REQUIRE(s == "sls_detector_get exptime");
+}
+
+TEST_CASE("Replace -h in command"){
+    std::string s = "sls_detector_get -h exptime";
+    auto r = sls::replace_first(&s, " -h", "");
+    REQUIRE(r == true);
+    REQUIRE(s == "sls_detector_get exptime");
+}
+
+TEST_CASE("replace --help"){
+    std::string s = "list --help";
+    auto r = sls::replace_first(&s, " --help", "");
+    REQUIRE(r == true);
+    REQUIRE(s == "list");
+}
+
 // TEST_CASE("concat things not being strings")