1 files changed, 77 insertions, 1 deletions

diff --git a/tools/pipette.c b/tools/pipette.c
index 1eda2d0..c76b9e5 100644
--- a/tools/pipette.c
+++ b/tools/pipette.c
@@ -26,6 +26,7 @@ using namespace std;
 #include <vector>
 #include <sstream>
 #include <map>
+#include <string.h>             /* for strlen() */
 
 #include <sys/types.h>          /* for fstat */
 #include <sys/stat.h>           /* .. */
@@ -438,11 +439,84 @@ void play() {
   dumpstat(tube[rEnd]);
   dumpstat(tube[wEnd]);
   sleep(1.5);
+  int plus = dup(tube[wEnd]);
   close(tube[rEnd]);
   dumpstat(tube[rEnd]);
   dumpstat(tube[wEnd]);
+  dumpstat(plus);
 }
 
+void test_read(){
+// test with:
+// cat envelope.dat  | 1<&0 ./pipette
+  char buf[1024];
+  list<string> rslt;
+  int didsome(0);
+  for (;;){     // loop over all read buffers
+    int nr = read(1, buf, sizeof(buf));
+    if (nr == 0) break;
+    if (nr < 0) {
+      cerr << "read failed " << strError() << endl;
+      exit(1);
+    }
+    for (;;){   // loop over all strings
+      for (int ii = 0; ii < nr; ii++) {
+        char ch = buf[ii];
+        if (ch == 0) {
+          if (!didsome) goto done;
+          didsome = 0;
+          continue;
+        }
+        if (!didsome) {
+          rslt.push_back("");
+        }
+        rslt.back() += ch;
+        didsome++;
+      }
+    }
+  }
+done:;;;;
+  for (list<string>::const_iterator ptr = rslt.begin();
+        ptr != rslt.end(); ptr++) {
+     cerr << *ptr << endl;
+  }
+}
+
+#if 0
+void old_test_read(){
+// test with:
+// echo asfd      | 1<&0 ./pipette
+// cat pipette.c  | 1<&0 ./pipette
+  char buf[1024];
+  for (;;){
+    int nr = read(1, buf, sizeof(buf));
+    if (nr == 0) break;
+    if (nr < 0) {
+      cerr << "read failed " << strError() << endl;
+      exit(1);
+    }
+// unit 1 fails: bad file descriptor:
+//    int nw = write(1, buf, nr);
+    for (int ii = 0; ii < nr; ii++) {
+      char* foo;
+      char out[2] = {0, 0};
+      char ch = buf[ii];
+      if (ch) {
+        foo = out;
+        *foo = ch;
+      } else {
+        foo = "␀\n";
+      }
+      int nw = write(2, foo, strlen(foo));
+      if (nw < 0) {
+        cerr << "write failed " << strError() << endl;
+        exit(1);
+      }
+    }
+  }
+}
+#endif
+
 int main(int argc, char** argv) {
   {
     progname = *argv;
@@ -452,7 +526,9 @@ int main(int argc, char** argv) {
     progid = binder.str();
   }
 
-  play();
+//  play();
+  test_read();
+  cerr << "<BuhBye>" << endl;
   exit(0);
 
 #define foo(name, num) codemap[num] = #name ;