1 files changed, 79 insertions, 0 deletions
diff --git a/libxsde/xsde/cxx/parser/validating/time-zone.cxx b/libxsde/xsde/cxx/parser/validating/time-zone.cxx
new file mode 100644
index 0000000..fb25f56
--- /dev/null
+++ b/libxsde/xsde/cxx/parser/validating/time-zone.cxx
@@ -0,0 +1,79 @@
+// file      : xsde/cxx/parser/validating/time-zone.cxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2005-2009 Code Synthesis Tools CC
+// license   : GNU GPL v2 + exceptions; see accompanying LICENSE file
+
+#include <xsde/cxx/parser/validating/time-zone.hxx>
+
+namespace xsde
+{
+  namespace cxx
+  {
+    namespace parser
+    {
+      namespace validating
+      {
+        namespace bits
+        {
+          bool
+          parse_time_zone (const char* s, size_t n, short& h, short& m)
+          {
+            // time_zone := Z|(+|-)HH:MM
+            //
+            if (n == 0)
+            {
+              return false;
+            }
+            else if (s[0] == 'Z')
+            {
+              if (n != 1)
+                return false;
+
+              h = 0;
+              m = 0;
+            }
+            else
+            {
+              if (n != 6 || (s[0] != '-' && s[0] != '+') || s[3] != ':')
+                return false;
+
+              // Parse hours.
+              //
+              char d1 = s[1];
+              char d2 = s[2];
+
+              if (d1 < '0' || d1 > '9' || d2 < '0' || d2 > '9')
+                return false;
+
+              h = 10 * (d1 - '0') + (d2 - '0');
+
+              if (h > 14)
+                return false;
+
+              // Parse minutes.
+              //
+              d1 = s[4];
+              d2 = s[5];
+
+              if (d1 < '0' || d1 > '9' || d2 < '0' || d2 > '9')
+                return false;
+
+              m = 10 * (d1 - '0') + (d2 - '0');
+
+              if (m > 59 || (h == 14 && m != 0))
+                return false;
+
+              if (s[0] == '-')
+              {
+                h = -h;
+                m = -m;
+              }
+            }
+
+            return true;
+          }
+        }
+      }
+    }
+  }
+}