1 files changed, 99 insertions, 0 deletions
diff --git a/src/ICSParser.java b/src/ICSParser.java
new file mode 100644
index 0000000..ac4f96d
--- /dev/null
+++ b/src/ICSParser.java
@@ -0,0 +1,99 @@
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+
+import java.security.MessageDigest;
+
+import java.net.URL;
+
+public class ICSParser
+{
+
+   public static void parse
+   (
+      final String url,
+      final Group group,
+      final boolean lazy,
+      final boolean uid_override
+   )
+   throws Exception
+   {
+      final BufferedReader reader;
+      final StringBuilder sb;
+
+      boolean should_record, has_id, ignore_line;
+      String line;
+      String class_name;
+      String hash_seed;
+      int length;
+      sb = new StringBuilder();
+      reader =
+         new BufferedReader(new InputStreamReader((new URL(url)).openStream()));
+
+      class_name = "unknown";
+      should_record = false;
+      ignore_line = false;
+
+      hash_seed = "";
+      has_id = false;
+
+      while ((line = reader.readLine()) != null)
+      {
+         if (line.startsWith("END:VEVENT"))
+         {
+            if (!has_id)
+            {
+               sb.append("UID:noid_");
+               sb.append(hash_seed.hashCode());
+               sb.append("\r\n");
+            }
+
+            sb.append(line);
+            sb.append("\r\n");
+
+            should_record = false;
+
+            group.add_ICS_fragment(sb.toString(), class_name, lazy);
+            sb.setLength(0);
+         }
+         else if (line.startsWith("BEGIN:VEVENT"))
+         {
+            should_record = true;
+            has_id = false;
+            hash_seed = "";
+         }
+         else if (line.startsWith("DTSTART:"))
+         {
+            hash_seed += line;
+         }
+         else if (line.startsWith("SUMMARY:"))
+         {
+            class_name = line.substring(8, line.length());
+            hash_seed += line;
+         }
+         else if (line.startsWith("UID"))
+         {
+            if (uid_override)
+            {
+               ignore_line = true;
+            }
+            else
+            {
+               has_id = true;
+            }
+         }
+
+         if (line.matches("\\w+:.*") && should_record)
+         {
+            if (!ignore_line)
+            {
+               sb.append(line);
+               sb.append("\r\n");
+            }
+
+            ignore_line = false;
+         }
+      }
+
+      reader.close();
+   }
+}