Token::getStrLength(): introduce new static method.

No functional change.

src/token.cpp

@@ -491,6 +491,32 @@ bool Token::Match(const Token *tok, const char pattern[], unsigned int varid)
     return true;
 }
 
+size_t Token::getStrLength(const Token *tok)
+{
+    assert(tok != NULL);
+
+    size_t len = 0;
+    const char *str = tok->strAt(0);
+
+    assert(str[0] == '"');
+    assert(str[strlen(str)-1] == '"');
+
+    while (*str)
+    {
+        if (*str == '\\')
+            ++str;
+        ++str;
+        ++len;
+    }
+
+    assert(len >= 2);
+
+    // don't count quotes
+    len -= 2;
+
+    return len;
+}
+
 bool Token::isStandardType() const
 {
     bool ret = false;

src/token.h

@@ -117,6 +117,15 @@ public:
      */
     static bool Match(const Token *tok, const char pattern[], unsigned int varid = 0);
 
+    /**
+     * Return length of C-string.
+     *
+     * Should be called for %str% tokens only.
+     *
+     * @param tok token with C-string
+     **/
+    static size_t getStrLength(const Token *tok);
+
     bool isName() const
     {
         return _isName;

test/testtoken.cpp

@@ -34,6 +34,7 @@ private:
     {
         TEST_CASE(nextprevious);
         TEST_CASE(multiCompare);
+        TEST_CASE(getStrLength);
     }
 
     void nextprevious()
@@ -78,6 +79,23 @@ private:
         ASSERT_EQUALS(static_cast<unsigned int>(-1), static_cast<unsigned int>(Token::multiCompare("abc|def", "abcd")));
         ASSERT_EQUALS(static_cast<unsigned int>(-1), static_cast<unsigned int>(Token::multiCompare("abc|def", "default")));
     }
+
+    void getStrLength()
+    {
+        Token *tok = new Token();
+
+        tok->str("\"\"");
+        ASSERT_EQUALS(0, Token::getStrLength(tok));
+
+        tok->str("\"test\"");
+        ASSERT_EQUALS(4, Token::getStrLength(tok));
+
+        tok->str("\"test \\\\test\"");
+        ASSERT_EQUALS(10, Token::getStrLength(tok));
+
+        Tokenizer::deleteTokens(tok);
+    }
+
 };
 
 REGISTER_TEST(TestTOKEN)