Solved

grep from STDIN python

Posted on 2006-11-30
2
2,782 Views
Last Modified: 2012-08-13
Hello everyone,
I have been trying to grep certain lines out of STDIN. Basically this is a little app that email is piped to. It works fine, the onlt thing is I get the whole email. I need only to strip out from and subject. Here is what I have so far
#!/usr/bin/python

import wx
import sys
import os
email = sys.stdin.read()
email_info = os.popen('grep -i \"^[subject:|from:]\" %s' %email)<--------------------------this is where i run into problems!
class EvoTray(wx.TaskBarIcon):
        def __init__(self, frame):
                wx.TaskBarIcon.__init__(self)

                self.frame = frame
                self.SetIcon(wx.Icon('/home/administrator/Desktop/env.png',wx.BITMAP_TYPE_PNG), 'EvoTray')
                self.Bind(wx.EVT_MENU, self.OnTaskBarActivate, id=1)
                self.Bind(wx.EVT_MENU, self.OnTaskBarDeactivate, id=2)
                self.Bind(wx.EVT_MENU, self.OnTaskBarClose, id=3)

        def CreatePopupMenu(self):
                menu = wx.Menu()
                menu.Append(1, 'Show')
                menu.Append(2, 'Hide')
                menu.Append(3, 'Close')
                return menu

        def OnTaskBarClose(self, event):
                self.frame.Close()

        def OnTaskBarActivate(self, event):
                if not self.frame.IsShown():
                        self.frame.Show()

        def OnTaskBarDeactivate(self, event):
                if self.frame.IsShown():
                        self.frame.Hide()

class MyFrame(wx.Frame):
        def __init__(self, parent, id, title):
                wx.Frame.__init__(self, parent, id, title, (-1, -1),
(290, 280))
                self.txt_ctrl = wx.TextCtrl(self,-1,email_info,style=wx.TE_MULTILINE|wx.TE_BESTWRAP)
                self.tskic = EvoTray(self)
                self.Centre()
                self.Bind(wx.EVT_CLOSE, self.OnClose)

        def OnClose(self, event):
                self.tskic.Destroy()
                self.Destroy()

class MyApp(wx.App):
        def OnInit(self):
                frame = MyFrame(None, -1, 'EvoMailNotification')
                frame.Show(True)
                self.SetTopWindow(frame)
                return True

app = MyApp(0)
app.MainLoop()


thanks in advance.
0
Comment
Question by:ircpamanager
2 Comments
 
LVL 14

Accepted Solution

by:
RichieHindle earned 500 total points
ID: 18046834
Why not use Python to strip out the pieces you need?  Here's a full working example (with an example email hard-coded for testing purposes):

import wx
import sys
import os
import re

def get_subject_and_from(email_text):
    return '\n'.join(re.findall(r'(?m)^(Subject:.*|^From:.*)', email_text))

email = """\
Subject: Hello
From: me
To: you

Hello!\n"""  # Replace this with "email = sys.stdin.read()" to read from STDIN

email_info = get_subject_and_from(email)
class EvoTray(wx.TaskBarIcon):
        def __init__(self, frame):
                wx.TaskBarIcon.__init__(self)

                self.frame = frame
                self.SetIcon(wx.Icon('/home/administrator/Desktop/env.png',wx.BITMAP_TYPE_PNG), 'EvoTray')
                self.Bind(wx.EVT_MENU, self.OnTaskBarActivate, id=1)
                self.Bind(wx.EVT_MENU, self.OnTaskBarDeactivate, id=2)
                self.Bind(wx.EVT_MENU, self.OnTaskBarClose, id=3)

        def CreatePopupMenu(self):
                menu = wx.Menu()
                menu.Append(1, 'Show')
                menu.Append(2, 'Hide')
                menu.Append(3, 'Close')
                return menu

        def OnTaskBarClose(self, event):
                self.frame.Close()

        def OnTaskBarActivate(self, event):
                if not self.frame.IsShown():
                        self.frame.Show()

        def OnTaskBarDeactivate(self, event):
                if self.frame.IsShown():
                        self.frame.Hide()

class MyFrame(wx.Frame):
        def __init__(self, parent, id, title):
                wx.Frame.__init__(self, parent, id, title, (-1, -1),
(290, 280))
                self.txt_ctrl = wx.TextCtrl(self,-1,email_info,style=wx.TE_MULTILINE|wx.TE_BESTWRAP)
                self.tskic = EvoTray(self)
                self.Centre()
                self.Bind(wx.EVT_CLOSE, self.OnClose)

        def OnClose(self, event):
                self.tskic.Destroy()
                self.Destroy()

class MyApp(wx.App):
        def OnInit(self):
                frame = MyFrame(None, -1, 'EvoMailNotification')
                frame.Show(True)
                self.SetTopWindow(frame)
                return True

app = MyApp(0)
app.MainLoop()
0
 
LVL 5

Author Comment

by:ircpamanager
ID: 18046964
I could not figure that out for the life of me, I did not know of module re. as you can tell ne to Python. Thanks alot.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Loaded data from a remote database into excel spreadsheet 2 109
Need a python script 5 87
Perl Frameworks 1 80
Path to Python 9 107
Article by: Swadhin
Introduction of Lists in Python: There are six built-in types of sequences. Lists and tuples are the most common one. In this article we will see how to use Lists in python and how we can utilize it while doing our own program. In general we can al…
The purpose of this article is to demonstrate how we can use conditional statements using Python.
Learn the basics of lists in Python. Lists, as their name suggests, are a means for ordering and storing values. : Lists are declared using brackets; for example: t = [1, 2, 3]: Lists may contain a mix of data types; for example: t = ['string', 1, T…
Learn the basics of if, else, and elif statements in Python 2.7. Use "if" statements to test a specified condition.: The structure of an if statement is as follows: (CODE) Use "else" statements to allow the execution of an alternative, if the …

920 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

15 Experts available now in Live!

Get 1:1 Help Now