#!/usr/bin/python

"""A script for which creates a shell script which upgrades non-pep8
compliant attribute names.
"""

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import os

import pyffi.formats.cgf
import pyffi.formats.dds
import pyffi.formats.kfm
import pyffi.formats.nif
import pyffi.formats.tga

from pyffi.object_models.xml.struct_ import StructBase
from pyffi.object_models.xml.basic import BasicBase
from pyffi.object_models.xml.bit_struct import BitStructBase

def make_shell_script(format_class, sh_file):
    # get set of names to convert
    names = set()
    for klass_name in dir(format_class):
        if klass_name.startswith("__"):
            # skip private stuff
            continue
        klass = getattr(format_class, klass_name)
        try:
            is_struct = issubclass(klass,
                                   (StructBase, BasicBase, BitStructBase))
        except TypeError:
            # klass is not a class
            continue
        if not is_struct:
            # klass is not a struct/basic class
            continue
        for name, obj in list(klass.__dict__.iteritems()):
            if isinstance(obj, (int, long)):
                # skip constants
                continue
            if name.find("_") != -1:
                # skip pep8 style attributes
                continue
            # note: now, obj should be a property or a function
            names.add(name)

    # now convert them, longest first!! (to avoid trouble if one is
    # substring of another)
    for i, name in enumerate(sorted(names, key=len, reverse=True)):
        newname = format_class.name_attribute(name)
        if name != newname:
            sh_file.write(
                "echo %i%% - %s : %s\n"
                % (int((100 * i + 0.5) / len(names)), name, newname))
            print(
                "%i%% - %s : %s"
                % (int((100 * i + 0.5) / len(names)), name, newname))
            sh_file.write(
                "find . -type f "
                "\( -name \"*.py\" -or -name \"*.txt\" \) -not -wholename \"*git*\" "
                "-exec perl -pi -w -e 's/%s/%s/g' {} \\;\n"
                % (name, newname))

# create conversion script
for format_class in (pyffi.formats.cgf.CgfFormat,
                     pyffi.formats.dds.DdsFormat,
                     pyffi.formats.kfm.KfmFormat,
                     pyffi.formats.nif.NifFormat,
                     pyffi.formats.tga.TgaFormat):
    with open(format_class.__name__.lower() + ".sh", "w") as sh_file:
        sh_file.write("#!/bin/sh\n\n")
        make_shell_script(format_class, sh_file)
        os.fchmod(sh_file.fileno(), 0755)
