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python/devsup/_nullapi.py

@@ -0,0 +1,69 @@
+
+def verinfo():
+    """(VER, REV, MOD, PATH, "site") = verinfo()
+    
+    Query EPICS version information
+    """
+    return (0,0,0,0.'invalid')
+
+class Record(object):
+    """Handle for record operations
+    
+    r = Record("rec:name")
+    """
+
+    def __init__(self, rec):
+        pass
+    def name(self):
+        """Record name
+        """
+    def info(self, key):
+        """info(key)
+        info(key, default)
+        
+        Lookup record info tag.  If no default
+        is provided then an exception is raised
+        if the info key does not exist.
+        """
+    def infos(self):
+        """Return a dictionary of all info tags
+        for this record
+        """
+
+    def scan(self, sync=False):
+        """scan(sync=False)
+        
+        Scan this record.  If sync is False then a
+        scan request is queued.  If sync is True then the record
+        is scannined immidately on the current thread.
+        """
+
+def Field(object):
+    """Handle for field operations
+    
+    f = Field("rec:name.HOPR")
+    """
+    def __init__(self, fld):
+        pass
+    def name(self):
+        """("rec", "FLD") = name()
+        """
+    def fieldinfo(self):
+        """(type, size, #elements) = fieldinfo()
+        
+        Type is DBF type code
+        size is number of bytes to start a single element
+        #elements is the maximum number of elements the field can hold
+        """
+
+    def getval(self):
+        """Fetch the current field value as a scalar.
+        
+        Returns Int, Float, or str
+        """
+
+    def putval(self, val):
+        """Update the field value
+        
+        Must be an Int, Float or str
+        """