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#!/usr/bin/python
"""
__version__ = "$Revision: 1.16 $"
__date__ = "$Date: 2004/08/08 18:31:53 $"
"""
import wx
from PythonCard import model
import os, sys
import re
import webbrowser
class ReDemo(model.Background):
def on_initialize(self, event):
self.compiled = None
self.previousSource = self.components.fldSource.text
def recompile(self):
pattern = self.components.fldPattern.text
text = self.components.fldSource.text
flags = self.getflags()
try:
self.compiled = re.compile(pattern, flags)
self.components.stcStatusMessage.text = ''
except re.error, msg:
self.compiled = None
self.components.stcStatusMessage.text = "re.error: %s" % str(msg)
self.components.stcStatusMessage.backgroundColor = 'red'
except TypeError, msg:
self.components.stcStatusMessage.text = "TypeError: %s" % str(msg)
self.components.stcStatusMessage.backgroundColor = 'red'
self.reevaluate()
# the logic of the tkinter version
# eludes me
def getflags(self):
flags = 0
comp = self.components
if comp.chkIGNORECASE.checked:
flags += re.IGNORECASE
if comp.chkLOCALE.checked:
flags += re.LOCALE
if comp.chkMULTILINE.checked:
flags += re.MULTILINE
if comp.chkDOTALL.checked:
flags += re.DOTALL
if comp.chkVERBOSE.checked:
flags += re.VERBOSE
return flags
def reevaluate(self):
text = self.components.fldSource.text
# effectively clear any existing matches
self.components.fldSource.SetStyle(0, len(text), wx.TextAttr("black", "white"))
if not self.compiled:
return
# first item in the radio is the display once button
# this will check it regardless of any future language
# changes made to the resource
displayJustOne = self.components.radSearchString.stringSelection == \
self.components.radSearchString.items[0]
last = 0
nmatches = 0
listGroups = self.components.listGroups
listGroups.items = []
while last <= len(text):
m = self.compiled.search(text, last)
if m is None:
break
first, last = m.span()
if last == first:
last = first+1
self.components.fldSource.SetStyle(first, last, wx.TextAttr("black", "yellow"))
if nmatches == 0:
groups = list(m.groups())
groups.insert(0, m.group())
for i in range(len(groups)):
g = "%2d: %s" % (i, `groups[i]`)
listGroups.append(g)
nmatches = nmatches + 1
if displayJustOne:
break
if nmatches == 0:
self.components.stcStatusMessage.text = '(no match)'
self.components.stcStatusMessage.backgroundColor = 'yellow'
#print "nmatches", nmatches, "\n"
def on_fldPattern_textUpdate(self, event):
self.recompile()
# textUpdate events occur on SetStyle
# so a variable is needed to know that we are in
# the midst of an update
def on_fldSource_textUpdate(self, event):
if self.previousSource != self.components.fldSource.text:
self.previousSource = self.components.fldSource.text
self.recompile()
# checkboxes
def on_mouseClick(self, event):
self.recompile()
# radiobutton
def on_radSearchString_select(self, event):
self.reevaluate()
def on_menuHelpReModule_select(self, event):
module_url = "http://docs.python.org/lib/module-re.html"
if sys.platform.startswith('win'):
fn = os.path.dirname(os.__file__)
fn = os.path.join(fn, os.pardir, "Doc", "lib", "module-re.html")
fn = os.path.normpath(fn)
if os.path.isfile(fn):
module_url = fn
del fn
webbrowser.open(module_url)
def on_menuHelpReHowTo_select(self, event):
webbrowser.open('http://py-howto.sourceforge.net/regex/regex.html')
if __name__ == '__main__':
app = model.Application(ReDemo)
app.MainLoop()
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