Support for the date handling functions.

[gedcom-parse.git] / gedcom / gedcom_date.lex

diff --git a/gedcom/gedcom_date.lex b/gedcom/gedcom_date.lex
index 50daf3f876f013c12ea9175fbfb4591aec1d8934..bba60ef5f4f15f36bca44e3bc025dd2f6a74a579 100644 (file)
--- a/gedcom/gedcom_date.lex
+++ b/gedcom/gedcom_date.lex
@@ -133,6 +133,55 @@ COMP            SIMPLE_RETURN(MON_COMP)
 
 %%
 
+int get_date_token(const char* str)
+{
+  int token;
+  YY_BUFFER_STATE buffer;
+
+  token_nr = 0;
+  yy_delete_buffer(YY_CURRENT_BUFFER);
+  buffer = yy_scan_string(str);
+  token = yylex();
+  yy_delete_buffer(buffer);
+  return token;
+}
+
+int get_year_tokens(const char* str, char** year1, char** year2)
+{
+  int token;
+  YY_BUFFER_STATE buffer;
+
+  token_nr = 0;
+  yy_delete_buffer(YY_CURRENT_BUFFER);
+  buffer = yy_scan_string(str);
+
+  token = yylex();
+  switch (token) {
+    case NUMBER: {
+      *year1 = buf[token_nr - 1];
+      token  = yylex();
+      switch (token) {
+       case SLASH: {
+         token = yylex();
+         switch (token) {
+           case NUMBER: {
+             *year2 = buf[token_nr - 1];
+             return 2;
+           }
+           default:  return 0;
+         }
+         break;
+       }
+       case 0:   return 1;
+       default:  return 0;
+      }
+      break;
+    }
+    case 0:   return 0;
+    default:  return 0;
+  }
+}
+
 int yywrap()
 {
   return 1;