"""
WxGrepDialog is a small GUI utility for testing regular expressions
on specified text in main console window, allowing iterative
development of working regular expressions.
Instructions
============
* Copy text to be grepped to the clipboard.
* Launch WxGrepDialog.
* Paste clipboard text into console window.
* Construct regular expressions in Search and Replace fields.
* Click Replace button to see result of regular expressions.
* If result in console window is undesired, click Undo button.
* Try again.
Notes
=====
* Performs multiple levels of undo.
* Regular expression strings are assumed to be in raw form.
* Replace performs re.sub on a line-by-line basis of text.
* Errors caused by malformed regular expressions print to stderr.
* Requires wxPython -- download from http://www.wxpython.org/download.php.
Jack Trainor 2008
"""
import sys
import os, os.path
import re
import wx
#import Clipboard
DialogWidth = 1000
DialogHeight = 800
def CreateMenuBar(frame):
menuBar = wx.MenuBar()
frame.SetMenuBar(menuBar)
return menuBar
def CreateMenu(menuBar, menuTitle):
menu = wx.Menu()
menuBar.Append(menu, menuTitle)
return menu
def CreateMenuItem(frame, menu, id, itemTitle, statusMsg, method):
menu.Append(id, itemTitle, statusMsg)
frame.Bind(wx.EVT_MENU, method, id=id)
def CreateButton(frame, panel, buttonTitle, method, id=wx.ID_ANY):
button = wx.Button(panel, id, buttonTitle)
frame.Bind(wx.EVT_BUTTON, method, button)
return button
def CreateLabeledTextSizer(staticText, textCtrl, proportion=0, flag=wx.ALL, border=5):
sizer = wx.BoxSizer(wx.HORIZONTAL)
sizer.Add(staticText, 0, wx.ALL, 5 )
sizer.Add(textCtrl, 0, wx.ALL, 5 )
return sizer
class GrepPanel(wx.Panel):
LABEL_WIDTH = 50
ENTRY_WIDTH = DialogWidth-100
def __init__(self, parent, id=wx.ID_ANY):
wx.Panel.__init__(self, parent, id)
self.editText = wx.TextCtrl(self, -1, "", size=(DialogWidth-20, DialogHeight-220), style=wx.TE_MULTILINE)
searchLabel = wx.StaticText(self, -1, "Search:", size=(GrepPanel.LABEL_WIDTH, -1), style=wx.ALIGN_RIGHT)
self.searchEntry = wx.TextCtrl(self, -1, "(.*)" , wx.DefaultPosition, wx.Size(GrepPanel.ENTRY_WIDTH, -1))
self.searchEntry.SetFont(wx.Font(-1, -1, wx.NORMAL, wx.BOLD))
replaceLabel = wx.StaticText(self, -1, "Replace:", size=(GrepPanel.LABEL_WIDTH, -1), style=wx.ALIGN_RIGHT)
self.replaceEntry = wx.TextCtrl(self, -1, r"[\1]" , wx.DefaultPosition, wx.Size(GrepPanel.ENTRY_WIDTH, -1))
self.replaceEntry.SetFont(wx.Font(-1, -1, wx.NORMAL, wx.BOLD))
self.replaceButton = CreateButton(parent, self, "Replace", parent.OnReplace)
self.undoButton = CreateButton(parent, self, "Undo", parent.OnUndo)
self.quitButton = CreateButton(parent, self, "Quit", parent.OnTimeToClose)
buttonSizer = wx.BoxSizer( wx.HORIZONTAL )
buttonSizer.Add(self.replaceButton, 0, wx.ALL, 5 )
buttonSizer.Add(self.undoButton, 0, wx.ALL, 5 )
buttonSizer.Add(self.quitButton, 0, wx.ALL, 5 )
sizer = wx.BoxSizer( wx.VERTICAL )
sizer.Add(self.editText, 0, wx.ALL, 5 )
sizer.Add(CreateLabeledTextSizer(searchLabel, self.searchEntry), 0, wx.ALIGN_LEFT)
sizer.Add(CreateLabeledTextSizer(replaceLabel, self.replaceEntry), 0, wx.ALIGN_LEFT)
sizer.Add(buttonSizer, 0, wx.ALL, 5 )
self.SetSizer(sizer)
self.Layout()
def GetText(self):
return self.editText.GetValue()
def GetSearchText(self):
return self.searchEntry.GetValue()
def GetReplaceText(self):
return self.replaceEntry.GetValue()
def GetFlagsText(self):
return self.flagsEntry.GetValue()
def SetText(self, text):
self.editText.SetValue(text)
self.editText.SetSelection(0, 0)
class GrepFrame(wx.Frame):
def __init__(self, app, parent, title):
self.app = app
wx.Frame.__init__(self, parent, -1, title, pos=(0, 0), size=(DialogWidth, DialogHeight))
self.CreateStatusBar()
menuBar = CreateMenuBar(self)
fileMenu = CreateMenu(menuBar, "&File")
CreateMenuItem(self, fileMenu, wx.ID_EXIT, "Q&uit\tCtrl-Q", "Exit", self.OnTimeToClose)
self.panel = GrepPanel(self)
def OnInit(self):
self.frame = frame = GrepFrame(self, None, "Grep Dialog")
self.SetTopWindow(frame)
frame.Show(True)
return True
def OnReplace(self, evt):
text = self.panel.GetText()
searchPat = self.panel.GetSearchText()
replacePat = self.panel.GetReplaceText()
self.app.Replace(text, searchPat, replacePat, "")
def OnUndo(self, evt):
self.app.Undo()
def OnTimeToClose(self, evt):
self.Close()
def GetText(self):
return self.panel.GetText()
def SetText(self, text):
self.panel.SetText(text)
class GrepApp(wx.App):
def __init__(self, redirect=True, fileName=None):
wx.App.__init__(self, redirect, fileName)
def OnInit(self):
self.frame = frame = GrepFrame(self, None, "Grep Dialog")
self.SetTopWindow(frame)
frame.Show(True)
self.undoStack = []
self.PushUndoText(self.frame.GetText())
text = ""
self.frame.SetText(text)
return True
def PushUndoText(self, text):
self.undoStack.append(text)
def PopUndoText(self):
text = None
if len(self.undoStack):
text = self.undoStack.pop()
return text
def Replace(self, text, searchPat, replacePat, flags):
try:
self.PushUndoText(text)
if flags:
flags = ', ' + flags
command = 'text = re.sub( r\'%s\', r\'%s\', text%s )' % ( searchPat, replacePat, flags )
print command
exec command
self.frame.SetText(text)
except Exception, e:
sys.stderr.write("%s %s\n" % ("GrepApp#Replace", e))
def Undo(self):
text = self.PopUndoText()
if text:
self.frame.SetText(text)
def main():
app = GrepApp(redirect=False)
app.MainLoop()
if __name__ == '__main__':
main()
