Merge branch 'ordinal' into 'master'

Ordinal

See merge request !43

radixcore/stringfunctions.cc

@@ -142,4 +142,6 @@ struct std::tm utc_to_time(const std::string &time, int &zone, int &daylight)
   return res;
 }
 
+int ordinal(char c) { return (unsigned char)c; }
+
 }  // namespace radix

radixcore/stringfunctions.hh

@@ -17,6 +17,21 @@
 
 namespace radix
 {
+/**
+ * @brief ordinal convert character to its ordinal value
+ * @param c char
+ * @return integer
+ */
+int RADIX_PUBLIC ordinal(char c);
+
+/**
+ * @brief itoa converts integer into character
+ * @param number integer must be within character bounds
+ * @return char
+ */
+template <typename type = int>
+char RADIX_PUBLIC itoa(type number);
+
 /**
  * @brief utc_to_time UTC time to
  * @param time UTC formatted date and time

radixcore/stringfunctions.i.hh

@@ -33,4 +33,16 @@ std::string join(const std::string &delim, const T &x)
   }
   return ss.str();
 }
+
+template <typename type>
+char itoa(type number)
+{
+  char c[2];
+  c[0] = '0';
+  c[1] = '\0';  // null
+  if (number > type(255)) return c[0];
+  if (number < type(0)) return c[0];
+  sprintf(c, "%c", number);
+  return c[0];
+}
 }  // namespace radix

radixcore/tests/tstString.cc

@@ -104,3 +104,36 @@ TEST(Split, NoDelim)
   ASSERT_EQ(1, x.size());
   EXPECT_EQ("nope", x[0]);
 }
+TEST(Radix, OrdinalItoa)
+{
+  {
+    char c = itoa(127);
+    EXPECT_EQ('\x7F', c);
+    int i = ordinal(c);
+    EXPECT_EQ(127, i);
+  }
+  {
+    char c = itoa(0);  // null
+    EXPECT_EQ('\0', c);
+    int i = ordinal(c);
+    EXPECT_EQ(0, i);
+  }
+  {
+    char c = itoa(99);
+    EXPECT_EQ('c', c);
+    int i = ordinal(c);
+    EXPECT_EQ(99, i);
+  }
+  {
+    char c = itoa(48);
+    EXPECT_EQ('0', c);
+    int i = ordinal(c);
+    EXPECT_EQ(48, i);
+  }
+  {
+    char c = itoa(140);
+    EXPECT_EQ('\x8C', c);
+    int i = ordinal(c);
+    EXPECT_EQ(140, i);
+  }
+}