Pretty printing ANT build

pretty_build.py

from clint.textui import puts, colored, indent, progress
from  progressbar import ProgressBar,Percentage,Bar
import pbs
import time
from string import lower
import sys
import argparse

def isError(line):
   if 'error:' in line:    # script errors
      print_error(line)
      return -1
   elif 'Failure' in line:   # script errors
      print_warning(line)
      return -1
   elif 'location:' in line:  # print compilation errors
      print_error(line)
      return -2
   return 1

def print_info(line):
   print_indent(line,color = 'green',start='',end='')

def print_warning(line):
   print_indent(line,color = 'yellow',start='',end='')

def print_error(line):
   print_indent(line,color = 'red',start='',end='')

def print_indent(line,tab=4,color='blue',start='[',end =']'):
   line = line.strip()
   with indent(tab,quote=colored.blue('#')):
      if(color == "blue"):
         puts(colored.blue(start+ line +end))
      elif(color == "red"):
         puts(colored.red(start+ line +end))
      elif(color == "green"):
         puts(colored.green(start+ line +end))
                     

class AntBuilder:
   def __init__(self):
      self.i = 0
      self.pbar = None
      self.verbose=False
      self.buildfile = None
      self.target = ""

   def parse_args(self):
      parser = argparse.ArgumentParser(description='')
      parser.add_argument('buildfile',action="store",default="build.xml",help="name of the ant build file")
      parser.add_argument('clean',action="store",default=True,help="True: clean build, False: No clean build")
      parser.add_argument('target',action="store",default="checkfelix_google",help="checkfelix_google,swoodoo_google,google or amazon")
      results =  parser.parse_args()
      self.buildfile = results.buildfile
      self.target = results.target
      self.clean = results.clean
   
   def process_out(self,line,stdin,process):
      self.i = self.i+1
      self.pbar.update(self.i+1)
      if isError(line)< 0:
         self.verbose = True
         return False  # print all errors
      elif(self.verbose == True):
         print_error(line)

   def build(self,target):
      self.pbar = ProgressBar(widgets=[Percentage(), Bar()], maxval=10000).start()
      print_indent("Starting build "+target)
      p = None
      try:
         p = pbs.ant(target,f=self.buildfile,_out=self.process_out);
      except Exception as e:
         pass
      p.wait()
      self.pbar.finish()

   def deploy(self,binary="./bin/-release.apk"):
      self.remove_app()
      print_indent("Installing the  Application")
      pbs.adb('install',binary,_err=sys.stdout)
      print_indent("Launching App")
      pbs.adb('shell','am start -n com.kayak.android/.Splash',_err=sys.stdout)
      print_indent("Done")

   def remove_app(self):
      print_indent("Removing Application")
      pbs.adb('uninstall','com.kayak.android',_err=sys.stdout)
      print_indent("App removed from Device")

   def main(self):
      self.parse_args()
      if(self.clean):
         self.build('clean')
         self.build(self.target)
         self.deploy(binary = './selective/bin/-release.apk')


if __name__ == "__main__":
     builder = AntBuilder() 
     builder.main()