# Made a better one -> http://pastebin.com/ZYphBFP5
#
#       AiE story breaker
#
#
#
#       Author:
#       Date:   12/Sep/2013
#       License: GNU General Public License
#
#       Purpose:
#           Split a collection of lines of text into parts, all under
#               a certain character limit
#
#       Usage:
#           aiebreaker.py <file to split> <maxiumum character per part>
 
 
from sys import argv
from os.path import dirname,join,basename,isdir
from os import mkdir,getcwd,chdir
 
# Script function
def run(args):
    # If the argument list does not contain 2 arguments
    #   alert the user, and exit
    if len(args) != 3:
        print 'bad argument list'
        print 'usage: aiebreaker.py <filename> <maximum character limit>'
        return
    else:
        # Retreive the arguments
        filename = args[1]
        try:
            part_length = int(args[2])
        except:
            # If the part length is not an integer, alert the user and exit
            print 'bad part length'
            print 'usage: aiebreaker.py <filename> <maximum character limit>'
            return
        current_length = 0
 
        # Try to open the file and read its contents
        try:
            with open(filename, 'r') as f:
                input_text = f.read()
        except:
            # If the file cannot be opened, alert the user and exit
            print 'bad filename'
            print 'usage: aiebreaker.py <filename> <maximum character limit>'
            return
 
        # Split the text into lines
        lines = input_text.split('\n')
 
        # Create a list of parts
        parts = []
        parts.append([])
 
        # For each line in the file
        for line in lines:
           
            # If the line itself is too long for the maximum character limit,
            #   alert the user and exit
            if len(line) > part_length:
                print line + ' : line too long, exiting'
               
            # Otherwise
            else:
 
                # If the line would make the current part too long,
                #   Create a new part
                to_append = line+'\n'
                if current_length + len(to_append) > part_length:
                    parts.append([])
                    print 'breaking at '+str(current_length)
                    current_length = 0
                   
                # Add the line to the current part
                parts[-1].append(to_append)
                current_length += len(to_append)
 
        # Make a directory for the parts
        base_name = basename(filename)
        extension = base_name.split('.')[-1]
        if len(extension) == 0:
            bare_name = base_name
        else:
            extension = '.'+extension
            bare_name = base_name[0:-len(extension)]
           
        parts_dir = join(dirname(filename),bare_name+'_parts')
        if not isdir(parts_dir):
            mkdir(parts_dir)
        cwd = getcwd()
        chdir(parts_dir)
        # Then make a file in that directory for each part
        current_part = 0
        for part in parts:
            with open(bare_name+"_part_"+str(current_part)+extension, 'w') as f:
                for line in part:
                    f.write(line)
            current_part += 1
        chdir(cwd)
       
        # End of process
 
# Invoke the Script
run(argv)