| 1 | # Program to create a diff of two distribution directories
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| 2 |
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| 3 | #--------------------------------------------------------------------------
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| 4 |
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| 5 | from mlx.update import manifestName, Manifest
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| 6 |
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| 7 | import tarfile
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| 8 | import sys
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| 9 | import os
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| 10 | import tempfile
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| 11 |
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| 12 | #--------------------------------------------------------------------------
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| 13 |
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| 14 | tarName = "diffdist.tar.bz2"
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| 15 |
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| 16 | #--------------------------------------------------------------------------
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| 17 |
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| 18 | def usage():
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| 19 | """Print a usage message."""
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| 20 | print("Usage: %s <old dist dir> <new dist dir>" % (sys.argv[0],))
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| 21 |
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| 22 | #--------------------------------------------------------------------------
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| 23 |
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| 24 | if __name__ == "__main__":
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| 25 | if len(sys.argv)!=3:
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| 26 | usage()
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| 27 | sys.exit(1)
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| 28 |
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| 29 | oldDirectory = sys.argv[1]
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| 30 | newDirectory = sys.argv[2]
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| 31 |
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| 32 | oldManifest = Manifest()
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| 33 | newManifest = Manifest()
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| 34 |
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| 35 | with open(os.path.join(oldDirectory, manifestName), "rt") as f:
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| 36 | oldManifest.readFrom(f)
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| 37 |
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| 38 | with open(os.path.join(newDirectory, manifestName), "rt") as f:
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| 39 | newManifest.readFrom(f)
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| 40 |
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| 41 | finalManifest = newManifest.copy()
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| 42 |
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| 43 | (modifiedAndNew, removed) = oldManifest.compare(newManifest)
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| 44 | #print removed
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| 45 | #print modifiedAndNew
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| 46 |
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| 47 | tarFile = tarfile.open(tarName, mode="w:bz2")
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| 48 |
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| 49 | for (path, newSize, newSum) in modifiedAndNew:
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| 50 | copyOld = False
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| 51 | if path in oldManifest:
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| 52 | (oldSize, oldSum) = oldManifest[path]
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| 53 | if path.endswith(".pyc") and newSize<1024 and newSize==oldSize:
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| 54 | with open(os.path.join(oldDirectory, path), "rb") as f:
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| 55 | oldData = f.read()
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| 56 | with open(os.path.join(newDirectory, path), "rb") as f:
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| 57 | newData = f.read()
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| 58 |
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| 59 | numDiffs = 0
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| 60 | for i in range(0, newSize):
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| 61 | if oldData[i]!=newData[i]: numDiffs += 1
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| 62 |
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| 63 | if numDiffs<=4:
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| 64 | print("File %s is considered to be the same in both versions with %d changes" % \
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| 65 | (path, numDiffs))
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| 66 | finalManifest.addFile(path, oldSize, oldSum)
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| 67 | copyOld = True
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| 68 |
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| 69 | if not copyOld:
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| 70 | print(">>> File %s is being copied" % (path,))
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| 71 | tarFile.add(os.path.join(newDirectory, path), arcname = path)
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| 72 |
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| 73 | (fd, path) = tempfile.mkstemp()
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| 74 | with os.fdopen(fd, "wt") as f:
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| 75 | finalManifest.writeInto(f)
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| 76 | os.chmod(path, 0o644)
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| 77 | tarFile.add(path, arcname = manifestName)
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| 78 | tarFile.close()
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| 79 |
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| 80 | os.remove(path)
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| 81 |
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| 82 | print()
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| 83 | print("%s created" % (tarName,))
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| 84 | if removed:
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| 85 | print()
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| 86 | print("Files to remove:")
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| 87 | print()
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| 88 | for path in removed:
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| 89 | print(" ", path)
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