Initia; coding of write. Sync

__write.cpp

@@ -0,0 +1,32 @@
+#include "__write.h"
+#include "Exception.h"
+#include "Expression.h"
+#include <iostream>
+
+namespace jet {
+   
+   __write::__set(coreutils::ZString &in, coreutils::MString &parent, Global &global) : Tag(in, parent, global) {
+      output = false;
+      processContainer(container);
+      if(!variableDefined("file"))
+	throw coreutils::Exception("write tag must have file defined.");
+      if(!variableDefined("expr") && variableDefined("value") && hasContainer)
+	throw coreutils::Exception("write tag cannot have both value and a container.");
+      if(variableDefined("expr") && !variableDefined("value") && hasContainer)
+	throw coreutils::Exception("write tag cannot have both expr and a container.");
+      if(variableDefined("expr") && variableDefined("value") && !hasContainer)
+	throw coreutils::Exception("write tag cannot have both expr and value.");
+      if(!variableDefined("expr") && !variableDefined("value") && !hasContainer)
+	throw coreutils::Exception("write tag must have a value, expr or a container.");
+      if(variableDefined("scope")) 
+	throw coreutils::Exception("Cannot use scope with write tag.");
+      
+
+      int fd = open(variables["file"], O_APPEND | O_TRUNC); // <--- options go here need to pick one
+
+
+      
+      close(fd);
+      
+   }      
+}