import regex to parse keywords.

src/script_parser.cpp

@@ -1,9 +1,11 @@
-#include <boost/test/unit_test.hpp>
-#include <iostream>
-#include <fstream>
-#include <sstream>
 #include <script_parser.h>
 
+#include <boost/test/unit_test.hpp>
+#include <fstream>
+#include <iostream>
+#include <regex>
+#include <sstream>
+
 using namespace std;
 using namespace boost::unit_test;
 
@@ -12,11 +14,24 @@ int parseScript(const char* path) {
     BOOST_TEST_REQUIRE(script.is_open(), "open script file failed!");
 
     string line;
-    while(getline(script, line, '\n')) {
-        // cout << line <<endl;
+    while (getline(script, line, '\n')) {
+        regex comment_pattern(" *#.*");
+        if (regex_match(line, comment_pattern)) {
+            cout << line << endl;
+            continue;
+        }
+        smatch base_match;
+        regex keyword_pattern(" *([a-z]+) *.*");
+        regex_match(line, base_match, keyword_pattern);
+        if (base_match.size() >= 2) {
+            ssub_match match = base_match[1];
+            cout << match.str() << endl;
+        }
+        // switch()
+
         string word;
         istringstream iss(line);
-        while(getline(iss, word, ' ')) {
+        while (getline(iss, word, ' ')) {
             cout << word << "+";
         }
         cout << endl;