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
# Copyright (C) 2022: Edouard TISSERANT
#
# See COPYING file for copyrights details.
import wx
# class RichMessageDialog is still not available in wxPython 3.0.2
class MessageBoxOnce(wx.Dialog):
"""
wx.MessageBox that user can ask not to show again
"""
def __init__(self, title, message, config_key):
self.Config = wx.ConfigBase.Get()
self.config_key = config_key
dont_show = self.Config.Read(self.config_key) == "True"
if dont_show:
return
wx.Dialog.__init__(self, None, title=title)
main_sizer = wx.BoxSizer(wx.VERTICAL)
message = wx.StaticText(self, label=message)
main_sizer.Add(message, border=20,
flag=wx.ALIGN_CENTER_HORIZONTAL | wx.TOP | wx.LEFT | wx.RIGHT)
self.check = wx.CheckBox(self, label=_("don't show this message again"))
main_sizer.Add(self.check, border=20,
flag=wx.LEFT | wx.RIGHT | wx.BOTTOM | wx.ALIGN_CENTER_HORIZONTAL)
buttons_sizer = wx.BoxSizer(wx.HORIZONTAL)
Button = wx.Button(self, label="OK")
self.Bind(wx.EVT_BUTTON, self.OnOKButton, Button)
buttons_sizer.Add(Button)
main_sizer.Add(buttons_sizer, border=20,
flag=wx.LEFT | wx.RIGHT | wx.BOTTOM | wx.ALIGN_RIGHT)
self.SetSizer(main_sizer)
self.Fit()
self.ShowModal()
def OnOKButton(self, event):
if self.check.GetValue():
self.Config.Write(self.config_key, "True")
self.EndModal(wx.ID_OK)