[WIP/ADD] Try to separate discovery, make links nicer

src/MatrixID.c

@@ -1,6 +1,9 @@
 #include <Matrix.h>
 
 #include <Cytoplasm/Memory.h>
+#include <Cytoplasm/Http.h>
+#include <Cytoplasm/Str.h>
+#include <Cytoplasm/Log.h>
 
 #include <string.h>
 
@@ -32,3 +35,34 @@ MatrixParseID(char *user)
 
     return ret;
 }
+UserID *
+MatrixParseIDFromMTO(Uri *uri)
+{
+    UserID *id = NULL;
+    char *path, *params, *decoded;
+    if (!uri)
+    {
+        return NULL;
+    }
+
+    if (!StrEquals(uri->proto, "https") || !StrEquals(uri->host, "matrix.to"))
+    {
+        return NULL;
+    }
+    if (strncmp(uri->path, "/#/", 3))
+    {
+        return NULL;
+    }
+    path = StrDuplicate(uri->path + 3);
+    params = path ? strchr(path, '?') : NULL;
+    if (params)
+    {
+        *params = '\0';
+    }
+    decoded = HttpUrlDecode(path);
+    id = MatrixParseID(decoded);
+    Free(decoded);
+    Free(path);
+
+    return id;
+}