beremiz

py_ext: fix CSV Writer

18 months ago, Edouard Tisserant
d2f5eb3c7d6e
py_ext: fix CSV Writer

fix POU logic :
- SAVE is a BOOL
- invocation of py_eval on rising edge of SAVE
- remove save python argument

fix python:
- use no encoding for file open (python2)
- re-use detected dialect if any
- use no "rt+" and truncate since no need to re-sniff dialect for output file
- return "OK" instead of "#SUCCESS", preventing POU logic to ACK result
- support creating new line if writing just after last line
- support appending data on short rows

fix example:
- use a HMI:Button to trigger CSV write instead of HMI:Input +1
- reload CSVs on on each new CSV opened in file browser
- add display of CSV write output
#!/usr/bin/env python
# -*- coding: utf-8 -*-
# This file is part of Beremiz.
# See COPYING file for copyrights details.
from . XSLTModelQuery import XSLTModelQuery
from . types_enums import *
class InstanceTagName(object):
"""Helpers object for generating instance tagname"""
def __init__(self):
self.TagName = None
def GetTagName(self):
return self.TagName
def ConfigTagName(self, context, *args):
self.TagName = ComputeConfigurationName(args[0][0])
def ResourceTagName(self, context, *args):
self.TagName = ComputeConfigurationResourceName(args[0][0], args[1][0])
def PouTagName(self, context, *args):
self.TagName = ComputePouName(args[0][0])
def ActionTagName(self, context, *args):
self.TagName = ComputePouActionName(args[0][0], args[0][1])
def TransitionTagName(self, context, *args):
self.TagName = ComputePouTransitionName(args[0][0], args[0][1])
class InstanceTagnameCollector(XSLTModelQuery):
""" object for collecting instances path list"""
def __init__(self, controller):
XSLTModelQuery.__init__(self,
controller,
"instance_tagname.xslt",
[(name, self.FactoryCaller(name))
for name in ["ConfigTagName",
"ResourceTagName",
"PouTagName",
"ActionTagName",
"TransitionTagName"]])
def FactoryCaller(self, funcname):
def CallFactory(*args):
return getattr(self.factory, funcname)(*args)
return CallFactory
def Collect(self, root, debug, instance_path):
self.factory = InstanceTagName()
self._process_xslt(root, debug, instance_path=instance_path)
res = self.factory.GetTagName()
self.factory = None
return res