I have an application that is build on wxPython and have run into a small but annoying problem. I use a Search Control in my toolbar just as in the ToolBar example. Now when the user enters say PrmID[ ... this gets passed to a regular expression search function, however this obviously raises the exception saying that there is an unexpected end to the regular expression. What I would like to do is replace '[' with '\[', however using the string.replace function yields 'PrmID\\[' (escaping the escape character, but not the character I would like to have escaped). My code of what I've tried is as follows:
And the doSearch function...
BTW, basically this application has a listing of Parameter names and values in a ListControl (self.lc), which when initially opened is backed-up by a two-dimensional array (self.data_bak) .
This 'active search' will modify what the user sees in the listctrl (making sure to update the back-up as well), just as they type it (I wanted to reproduce the Search function from the upper right corner of iTunes). The toggle check is there because the user has a toggle button on the toolbar to turn this active search on or off.
So if anybody has any ideas as to how to replace '[' in a string with literally '\[' I would appreciate it. I've played around with raw strings and even tried using a crazy combination of raw strings and the repr function to no avail.
An example of parameter names is P_SWID_PrmID[0].
To reiterate, I simply need to take the user input and escape any bracket characters so that the regex.search function does not mistake it for the start/end of a regular expression character class.
Code:
def OnTextEntered(self, evt):
text = self.GetValue()
if re.search('\[', text) and not re.search('\]', text):
text.replace('[', '\[')
if self.DoSearch(text, evt):
if text not in self.searches:
self.searches.append(text)
if len(self.searches) > self.maxSearches:
del self.searches[0]
self.SetMenu(self.MakeMenu())
Code:
def DoSearch(self, text, event=None):
if not len(self.data_bak):
return False
# 10014 is the Event type for wx.EVT_MENU
# 10164 is the Event type for wx.EVT_TEXT (adaptive search)
# 10165 is the Event type for wx.EVT_TEXT_ENTER
valid_events = [10014, 10165]
regex = re.compile(text.upper())
tool = self.tb.FindById(Global.OnTB_ActSearch_Id)
if tool.IsToggled():
self.lc.DeleteAllItems()
for entry in range(len(self.data_bak)):
if text:
if regex.search(self.data_bak[entry][0].upper()):
self.lc.Append(self.data_bak[entry])
else:
self.lc.Append(self.data_bak[entry])
return False
elif not tool.IsToggled() and event.GetEventType() in valid_events:
idx = self.lc.FindItem(self.currentItem + 1, text, True)
if idx != -1:
self.lc.Focus(idx)
self.lc.Select(idx)
return True
This 'active search' will modify what the user sees in the listctrl (making sure to update the back-up as well), just as they type it (I wanted to reproduce the Search function from the upper right corner of iTunes). The toggle check is there because the user has a toggle button on the toolbar to turn this active search on or off.
So if anybody has any ideas as to how to replace '[' in a string with literally '\[' I would appreciate it. I've played around with raw strings and even tried using a crazy combination of raw strings and the repr function to no avail.
An example of parameter names is P_SWID_PrmID[0].
To reiterate, I simply need to take the user input and escape any bracket characters so that the regex.search function does not mistake it for the start/end of a regular expression character class.
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