--- a/Paper/codes/wc/UnixChrisFileImpl.cpp	Thu May 06 00:00:26 2021 +0900
+++ b/Paper/codes/wc/UnixChrisFileImpl.cpp	Thu May 06 15:49:36 2021 +0900
@@ -1,5 +1,5 @@
 #include <stdio.h>
-#impl "Wc.h" as "WcChrsImpl.h"
+#impl "UnixCharImpl.h" as "UnixCharImpl.h"
 
 typedef struct UnixFileImpl <> ipml File {
   int fd;    // unix file descriptor
@@ -18,8 +18,11 @@
 
 // Topology manageres determins input / output connection
 // 
-__code setOutput(Wc* wc, Output *output,__code next(...)) {
+// Topology manageres determins input / output connection
+//
+__code gearsConnect(Wc* wc, Input *input, Output *output,__code next(...)) {
    file->reader = output ;
+   input->add(&file->ack,"ack");
    goto next(...);
 }
 
@@ -29,6 +32,7 @@
    int len = read(fd, BUFSIZE, block->data);
    if (len <=0 ) {
        block->eof |= BLOCK_FLAG_EOF;
+       close(file->fd);
        return 0;
    }
    reader->put(block);
@@ -43,14 +47,15 @@
    if (putBlock(file,reader)) {
       putBlock(file,reader);
    }
-   goto next(file,...);
+   goto next(...);
 }
 
 __code uniAck(UnixFileImpl* file,Ack *ack, Output reader, __code next(...)) {
    if (!ack->isOk) {
-      close(fd);
+      close(file->fd);
       goto next(...);
    }
    putBlock(file,reader);
    goto next(...);   // file is automaticaly put into local dataGearManger/input
 }
+