# script to delete the normal data from all OBJ
# files in a directory and subdirectory. Edited
# file will be renamed as filename_NoNormals.obj
# Strongly suggest that you work on copies of the
# files rather than the originals.
# written by PhilC
# http://www.philc.net
# Use however you like but at your own risk.

import poser
import os
import string

def main():
    # get directory
    folder = getDirectory()
    #itterate through folder and subfolders
    os.path.walk(folder,process,0)

def process(x,directory,files):
    print directory
    for name in files:
        if string.lower(name[-4:]) == ".obj":
            newName = name[:-4] + "_NoNormals.obj"
            existingFilePath = os.path.join(directory,name)
            newFilePath = os.path.join(directory,newName)
            lines = ReadFileToLines(existingFilePath)    
            newLines = []
            print "Processing %s" % existingFilePath
            for line in lines:
                if "vn " in line:
                    pass
                else:
                    newLines.append(line)
            SaveLinesToFile(newLines,newFilePath)
            print "File saved to %s" % newFilePath

def getDirectory():
    dlg = poser.DialogDirChooser(1, "Select folder", os.curdir)
    dlg.Show()
    return dlg.Path()
    
def openFile():
    Type = poser.kDialogFileChooserOpen
    parentDialog = 1
    message = "browse for obj file"
    startDir = os.path.join(os.curdir,'*.obj')
    dlg = poser.DialogFileChooser(Type, parentDialog, message, startDir)
    dlg.Show()
    filepath = dlg.Path()
    return filepath

def saveFile():
    Type = poser.kDialogFileChooserSave
    parentDialog = 1
    message = "save as"
    startDir = os.path.join(os.curdir,'*.obj')
    dlg = poser.DialogFileChooser(Type, parentDialog, message, startDir)
    dlg.Show()
    filepath = dlg.Path()
    return filepath

def ReadFileToLines(filepath):
    singleline = 0
    fd = open(filepath, 'rb')
    s = fd.read()
    fd.close()
    if string.find(s, '\r\n') > -1:
        delim = '\r\n'
    elif string.find(s, '\n') > -1:
        delim = '\n'
    elif string.find(s, '\r') > -1:
        delim = '\r'
    else:
        singleline = 1
    if not singleline:
        lines = string.split(s, delim)
    else:
        lines = [s]
    return lines

def SaveLinesToFile(lines, filepath):
    fd = open(filepath, 'wb')
    s = string.join(lines, '\n')
    fd.write(s)
    fd.close()

main()