Maximum CD 2010 May/maximum-cd-2010-05.iso/DiscContents/boxee-0.9.20.10711.exe/system/python/Lib/plat-mac/cfmfile.pyo

Python Compiled Bytecode | 2009-07-20 | 5.7 KB | 175 lines

# Source Generated with Decompyle++
# File: in.pyo (Python 2.4)

'''codefragments.py -- wrapper to modify code fragments.'''
__version__ = '0.8b3'
__author__ = 'jvr'
import Carbon.File as Carbon
import struct
from Carbon import Res
import os
import sys
DEBUG = 0
error = 'cfm.error'
BUFSIZE = 524288

def mergecfmfiles(srclist, dst, architecture = 'fat'):
    '''Merge all files in srclist into a new file dst.

    If architecture is given, only code fragments of that type will be used:
    "pwpc" for PPC, "m68k" for cfm68k. This does not work for "classic"
    68k code, since it does not use code fragments to begin with.
    If architecture is None, all fragments will be used, enabling FAT binaries.
    '''
    srclist = list(srclist)
    for i in range(len(srclist)):
        srclist[i] = Carbon.File.pathname(srclist[i])

    dst = Carbon.File.pathname(dst)
    dstfile = open(dst, 'wb')
    rf = Res.FSpOpenResFile(dst, 3)

    try:
        dstcfrg = CfrgResource()
        for src in srclist:
            srccfrg = CfrgResource(src)
            for frag in srccfrg.fragments:
                if frag.architecture == 'pwpc' and architecture == 'm68k':
                    continue

                if frag.architecture == 'm68k' and architecture == 'pwpc':
                    continue

                dstcfrg.append(frag)
                frag.copydata(dstfile)


        cfrgres = Res.Resource(dstcfrg.build())
        Res.UseResFile(rf)
        cfrgres.AddResource('cfrg', 0, '')
    finally:
        dstfile.close()
        rf = Res.CloseResFile(rf)



class CfrgResource:

    def __init__(self, path = None):
        self.version = 1
        self.fragments = []
        self.path = path
        if path is not None and os.path.exists(path):
            currentresref = Res.CurResFile()
            resref = Res.FSpOpenResFile(path, 1)
            Res.UseResFile(resref)

            try:
                data = Res.Get1Resource('cfrg', 0).data
            except Res.Error:
                raise Res.Error, "no 'cfrg' resource found", sys.exc_traceback
            finally:
                Res.CloseResFile(resref)
                Res.UseResFile(currentresref)

            self.parse(data)
            if self.version != 1:
                raise error, "unknown 'cfrg' resource format"




    def parse(self, data):
        (res1, res2, self.version, res3, res4, res5, res6, self.memberCount) = struct.unpack('8l', data[:32])
        data = data[32:]
        while data:
            frag = FragmentDescriptor(self.path, data)
            data = data[frag.memberSize:]
            self.fragments.append(frag)


    def build(self):
        self.memberCount = len(self.fragments)
        data = struct.pack('8l', 0, 0, self.version, 0, 0, 0, 0, self.memberCount)
        for frag in self.fragments:
            data = data + frag.build()

        return data


    def append(self, frag):
        self.fragments.append(frag)



class FragmentDescriptor:

    def __init__(self, path, data = None):
        self.path = path
        if data is not None:
            self.parse(data)



    def parse(self, data):
        self.architecture = data[:4]
        (self.updatelevel, self.currentVersion, self.oldDefVersion, self.stacksize, self.applibdir, self.fragtype, self.where, self.offset, self.length, self.res1, self.res2, self.memberSize) = struct.unpack('4lhBB4lh', data[4:42])
        pname = data[42:self.memberSize]
        self.name = pname[1:1 + ord(pname[0])]


    def build(self):
        data = self.architecture
        data = data + struct.pack('4lhBB4l', self.updatelevel, self.currentVersion, self.oldDefVersion, self.stacksize, self.applibdir, self.fragtype, self.where, self.offset, self.length, self.res1, self.res2)
        self.memberSize = len(data) + 2 + 1 + len(self.name)
        if self.memberSize % 4:
            self.memberSize = self.memberSize + 4 - self.memberSize % 4

        data = data + struct.pack('hb', self.memberSize, len(self.name))
        data = data + self.name
        data = data + '\x00' * (self.memberSize - len(data))
        return data


    def getfragment(self):
        if self.where != 1:
            raise error, "can't read fragment, unsupported location"

        f = open(self.path, 'rb')
        f.seek(self.offset)
        if self.length:
            frag = f.read(self.length)
        else:
            frag = f.read()
        f.close()
        return frag


    def copydata(self, outfile):
        if self.where != 1:
            raise error, "can't read fragment, unsupported location"

        infile = open(self.path, 'rb')
        if self.length == 0:
            infile.seek(0, 2)
            self.length = infile.tell()

        infile.seek(self.offset)
        offset = outfile.tell()
        if offset % 16:
            offset = offset + 16 - offset % 16

        outfile.seek(offset)
        self.offset = offset
        l = self.length
        while l:
            if l > BUFSIZE:
                outfile.write(infile.read(BUFSIZE))
                l = l - BUFSIZE
                continue
            outfile.write(infile.read(l))
            l = 0
        infile.close()