ccb.py

import sys
import plistlib
import datetime

class CCBReal:
    def __init__(self, value):
        self.value_raw = value
        self.value = float(value)

    def float(self):
        return self.value

    def raw(self):
        return self.value_raw


class CCBParser(plistlib.PlistParser):
    def end_real(self):
        value = self.getData()
        self.addObject(CCBReal(value))

class CCBWriter(plistlib.PlistWriter):
    def writeValue(self, value):
        if isinstance(value, CCBReal):
            self.simpleElement("real", value.raw())
        else:
            plistlib.PlistWriter.writeValue(self, value)

    def writeArray(self, array):
        if len(array) <= 0:
            self.writeln("<array/>")
        else:
            plistlib.PlistWriter.writeArray(self, array)

    def writeDict(self, d):
        if len(d) <= 0:
            self.writeln("<dict/>")
        else:
            plistlib.PlistWriter.writeDict(self, d)


def readPlist(pathOrFile):
    """Read a .plist file. 'pathOrFile' may either be a file name or a
    (readable) file object. Return the unpacked root object (which
    usually is a dictionary).
    """
    didOpen = 0
    if isinstance(pathOrFile, (str, unicode)):
        pathOrFile = open(pathOrFile)
        didOpen = 1
    p = CCBParser()
    rootObject = p.parse(pathOrFile)
    if didOpen:
        pathOrFile.close()
    return rootObject


def writePlist(rootObject, pathOrFile):
    """Write 'rootObject' to a .plist file. 'pathOrFile' may either be a
    file name or a (writable) file object.
    """
    didOpen = 0
    if isinstance(pathOrFile, (str, unicode)):
        pathOrFile = open(pathOrFile, "w")
        didOpen = 1
    writer = CCBWriter(pathOrFile)
    writer.writeln("<plist version=\"1.0\">")
    writer.writeValue(rootObject)
    writer.writeln("</plist>")
    if didOpen:
        pathOrFile.close()


if __name__ == "__main__":
    ccb = "/path/of/you/file.ccb"
    if len(sys.argv) >= 2:
        ccb = sys.argv[1]
        
    plist = readPlist(ccb)
    print plist.guides[0].position
    print plist.guides[0].position.float()
    plist.guides[0].position = 5.5
    print plist.guides[0].position
    writePlist(plist, ccb)