Resolves #61 loop with keep open flag

Author: pcottle

fpp

@@ -21,6 +21,17 @@ done
 BASEDIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
 
 PYTHONCMD="python"
+
+function doProgram {
+  # process input from pipe and store as pickled file
+  $PYTHONCMD "$BASEDIR/src/processInput.py"
+  # now close stdin and choose input...
+  exec 0<&-
+  $PYTHONCMD "$BASEDIR/src/choose.py" < /dev/tty
+  # execute the output bash script
+  sh ~/.fpp/.fpp.sh < /dev/tty
+}
+
 # we need to handle the --help option outside the python
 # flow since otherwise we will move into input selection...
 for opt in "$@"; do
@@ -31,13 +42,19 @@ for opt in "$@"; do
   elif [ "$opt" == "--help" -o "$opt" == "-h" ]; then
     $PYTHONCMD "$BASEDIR/src/printHelp.py"
     exit 0
+  elif [ "$opt" == "--keep-open" -o "$opt" == "-ko" ]; then
+    # allow control-c to exit the loop
+    # http://unix.stackexchange.com/a/48432
+    trap "exit" INT
+    while true; do
+      doProgram
+      # connect tty back to stdin since we closed it
+      # earlier. this also works since we will only read
+      # from stdin once and then go permanent interactive mode
+      # http://stackoverflow.com/a/1992967/948126
+      exec 0</dev/tty
+    done
   fi
 done
 
-# process input from pipe and store as pickled file
-$PYTHONCMD "$BASEDIR/src/processInput.py"
-# now choose input and...
-exec 0<&-
-$PYTHONCMD "$BASEDIR/src/choose.py" < /dev/tty
-# execute the output bash script
-sh ~/.fpp/.fpp.sh < /dev/tty
+doProgram

src/processInput.py

@@ -107,6 +107,12 @@
 which editor to open the selected files with. If that variable
 is not set, $EDITOR is used the next fallback, with "vim" as a last resort.
 
+~ Keep-Open ~
+
+Use the --keep-open or -ko flag to avoid closing PathPicker once
+a file selection or command is performed. This will loop the program
+until Ctrl-C is used to terminate the process.
+
 '''
 
 USAGE_TAIL = '''
@@ -165,6 +171,7 @@ def usage():
         sys.exit(0)
     else:
         # delete the old selection
+        print('getting input')
         selectionPath = stateFiles.getSelectionFilePath()
         if os.path.isfile(selectionPath):
             os.remove(selectionPath)