1 files changed, 48 insertions, 0 deletions
diff --git a/src/core/char.c b/src/core/char.c
new file mode 100644
index 0000000..39ca72e
--- /dev/null
+++ b/src/core/char.c
@@ -0,0 +1,48 @@
+#include <string.h>
+
+#include "char.h"
+
+int ZoO_char_is_banned (const ZoO_char c)
+{
+   switch (c)
+   {
+      case '(':
+      case ')':
+      case '[':
+      case ']':
+      case '{':
+      case '}':
+      case '<':
+      case '>':
+         return 1;
+
+      default:
+         return 0;
+   }
+}
+
+int ZoO_char_is_punctuation (const ZoO_char c)
+{
+   switch (c)
+   {
+      case '!':
+      case ',':
+      case '.':
+      case ':':
+      case ';':
+      case '?':
+         return 1;
+
+      default:
+         return 0;
+   }
+}
+
+int ZoO_word_cmp
+(
+   const ZoO_char word_a [const static 1],
+   const ZoO_char word_b [const static 1]
+)
+{
+   return strcmp((const char *) word_a, (const char *) word_b);
+}