#!/usr/bin/env python
# appendall.py - Append Text To Every Non-Comment Line In A File
# Copyright (c) 2014 TundraWare Inc., Des Plaines, IL 60018 USA
# All Rights Reserved. For Terms Of Use See: appendall-license.txt
# For Program Updates See: http://www.tundraware.com/Software/appendall
# $Id: appendall.py,v 1.101 2014/11/21 21:00:53 tundra Exp $

# Embed the source control ID string for use by program

CVSID='$Id: appendall.py,v 1.101 2014/11/21 21:00:53 tundra Exp $'

#####
# Program Information
#####

PROGNAME = "appendall.py"
PROGENV  = "appendall".upper()
VERSION  = CVSID.split()[2]
PROGVER  = PROGNAME + " " + VERSION + " - Append Text To Every Non-Comment Line In A File"


#####
# Copyright Information
#####

COPYRIGHT    = "Copyright (c) 2014 TundraWare Inc., Des Plaines, IL 60018 USA"

#####
# List Of All Legal Options - Update This When You Add More!!!!
#####

OPTIONSLIST = '-hv'


#----------------------------------------------------------#
#            Variables User Might Change                   #
#----------------------------------------------------------#



#------------------- Nothing Below Here Should Need Changing ------------------#


#----------------------------------------------------------#
#                       Imports                            #
#----------------------------------------------------------#

import getopt
import os
import sys


#----------------------------------------------------------#
#                 Aliases & Redefinitions                  #
#----------------------------------------------------------#



#----------------------------------------------------------#
#                Constants & Literals                      #
#----------------------------------------------------------#



#####
# Constants
#####



#####
# Literals
#####

COMMENT = '#'


#----------------------------------------------------------#
#              Prompts, & Application Strings              #
#----------------------------------------------------------#


#####
# Debug Messages
#####

DEBUGFLAG     =   "-d"
dDEBUG        =   "DEBUG"
dPROGENV      =   "$" + PROGENV

#####
# Error Messages
#####

eBADARG  =  "Invalid command line: %s!"
eERROR   =  "ERROR"
eNOTEXT  =  "Missing Text To Append!"


#####
# Informational Messages
#####

iINFO    =   "INFO"


#####
# Usage Prompts
#####

# Make the options list more human readable

optionslist =  OPTIONSLIST.replace(':', ' arg -').strip()
if optionslist[-1] == '-':
    optionslist = optionslist[:-1].strip()

uTable = [PROGVER,
          "usage:  " + PROGNAME + " [%s]" % optionslist,
          "   where,",
          "          -h       Print this help information",
          "          -v       Print detailed version information",
          ]


#----------------------------------------------------------#
#          Global Variables & Data Structures              #
#----------------------------------------------------------#

CFGFILE = os.path.join(os.getenv("HOME"), "." + "appendall")  # conf file


#--------------------------- Code Begins Here ---------------------------------#


#----------------------------------------------------------#
#             Object Base Class Definitions                #
#----------------------------------------------------------#

    

#----------------------------------------------------------#
#             Supporting Function Definitions              #
#----------------------------------------------------------#


#####
# Print An Error Message
#####

def ErrorMsg(emsg):
    PrintStderr(PROGNAME + " " + eERROR + ": " + emsg)

# End of 'ErrorMsg()'


#####
# Print To stderr
#####

def PrintStderr(msg, trailing="\n"):
    sys.stderr.write(msg + trailing)

# End of 'PrintStderr()'


#####
# Print To stdout
#####

def PrintStdout(msg, trailing="\n"):
    sys.stdout.write(msg + trailing)

# End of 'PrintStdout'


#####
# Print Usage Information
#####

def Usage():
    for line in uTable:
        PrintStdout(line)

# End of 'Usage()'


#----------------------------------------------------------#
#                    Program Entry Point                   #
#----------------------------------------------------------#

# Command line processing - Process any options set in the
# environment first, and then those given on the command line

OPTIONS = sys.argv[1:]
envopt = os.getenv(PROGENV)
if envopt:
    OPTIONS = envopt.split() + OPTIONS

try:
    opts, args = getopt.getopt(OPTIONS, OPTIONSLIST)

except getopt.GetoptError, (errmsg, badarg):

    ErrorMsg(eBADARG % errmsg)
    sys.exit(1)

for opt, val in opts:

    if opt == "-h":
        Usage()
        sys.exit(0)

    if opt == "-v":
        PrintStdout(CVSID)
        sys.exit(0)


# Get text to append

try:
    text = sys.argv[1]

except:
    ErrorMsg(eNOTEXT)
    sys.exit(1)
    

for line in sys.stdin.readlines():

    # Get rid of linefeeds - we'll add them back later
    
    if line[-1] == "\n":
        line = line[:-1]

    # Ignore comments text, and blank lines
    
    if line.split(COMMENT)[0].strip():

        parts = line.split(COMMENT)
        if len(parts) == 1:
            line = parts[0] + text

        else:
            line = parts[0] + text + COMMENT + parts[1]
            

    PrintStdout(line)