def generateZoneinfoFiles()

in src/zonal/tzconvert.py [0:0]
46 lines of code
17 McCabe index (conditional complexity)

    def generateZoneinfoFiles(self, outputdir, minYear, maxYear=2018, links=True, windowsAliases=None, filterzones=None):

        # Empty current directory
        try:
            for root, dirs, files in os.walk(outputdir, topdown=False):
                for name in files:
                    os.remove(os.path.join(root, name))
                for name in dirs:
                    os.rmdir(os.path.join(root, name))
        except OSError:
            pass

        for tzzone in self.zones.itervalues():
            if filterzones and tzzone.name not in filterzones:
                continue
            cal = Calendar()
            vtz = tzzone.vtimezone(cal, self.rules, minYear, maxYear)
            cal.addComponent(vtz)

            icsdata = cal.getText()
            fpath = os.path.join(outputdir, tzzone.name + ".ics")
            if not os.path.exists(os.path.dirname(fpath)):
                os.makedirs(os.path.dirname(fpath))
            with open(fpath, "w") as f:
                f.write(icsdata)
            if self.verbose:
                print("Write path: %s" % (fpath,))

        if links:
            if windowsAliases is not None:
                self.parseWindowsAliases(windowsAliases)

            link_list = []
            for linkTo, linkFrom in sorted(self.links.iteritems(), key=lambda x: x[0]):

                # Check for existing output file
                fromPath = os.path.join(outputdir, linkFrom + ".ics")
                if not os.path.exists(fromPath):
                    print("Missing link from: %s to %s" % (linkFrom, linkTo,))
                    continue

                with open(fromPath) as f:
                    icsdata = f.read()
                icsdata = icsdata.replace(linkFrom, linkTo)

                toPath = os.path.join(outputdir, linkTo + ".ics")
                if not os.path.exists(os.path.dirname(toPath)):
                    os.makedirs(os.path.dirname(toPath))
                with open(toPath, "w") as f:
                    f.write(icsdata)
                if self.verbose:
                    print("Write link: %s" % (linkTo,))

                link_list.append("%s\t%s" % (linkTo, linkFrom,))

            # Generate link mapping file
            linkPath = os.path.join(outputdir, "links.txt")
            with open(linkPath, "w") as f:
                f.write("\n".join(link_list))