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#!/usr/bin/python -tt
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
# (c) 2007 Red Hat. Written by skvidal@fedoraproject.org

import yum
import sys
import datetime
import os
import locale
import rpmUtils.arch
from yum.i18n import to_unicode

from urlgrabber.progress import format_number

from optparse import OptionParser

def bkMG(num):
    ''' Call format_number() but deals with negative numbers. '''
    if num >= 0:
        return format_number(num)
    return '-' + format_number(-num)

class DiffYum(yum.YumBase):
    def __init__(self):
        yum.YumBase.__init__(self)
        self.dy_repos = {'old':[], 'new':[]}
        self.dy_basecachedir = yum.misc.getCacheDir()
        self.dy_archlist = ['src']
        
    def dy_shutdown_all_other_repos(self):
        # disable all the other repos
        self.repos.disableRepo('*')

        
    def dy_setup_repo(self, repotype, baseurl):
        repoid = repotype + str (len(self.dy_repos[repotype]) + 1)
        self.dy_repos[repotype].append(repoid)
     
        # make our new repo obj
        newrepo = yum.yumRepo.YumRepository(repoid)
        newrepo.name = repoid
        if baseurl.startswith("mirror:"):
            newrepo.mirrorlist = baseurl[len("mirror:"):]
        elif baseurl.startswith("/"):
            newrepo.baseurl = ["file:" + baseurl]
        else:
            newrepo.baseurl = [baseurl]
        newrepo.basecachedir = self.dy_basecachedir
        newrepo.base_persistdir = self.dy_basecachedir
        newrepo.metadata_expire = 0
        newrepo.timestamp_check = False
        # add our new repo
        self.repos.add(newrepo)        
        # enable that repo
        self.repos.enableRepo(repoid)
        # setup the repo dirs/etc
        self.doRepoSetup(thisrepo=repoid)
        if '*' in self.dy_archlist:
            # Include all known arches
            arches = rpmUtils.arch.arches
            archlist = list(set(arches.keys()).union(set(arches.values())))
        else:
            archlist = self.dy_archlist
        self._getSacks(archlist=archlist, thisrepo=repoid)

    def dy_diff(self, compare_arch=False):
        add = []
        remove = []        
        modified = []
        obsoleted = {} # obsoleted = by

        #  Originally we did this by setting up old and new repos. ... but as
        # a faster way, we can just go through all the pkgs once getting the
        # newest pkg with a repoid prefix of "old", dito. "new", and then
        # compare those directly.
        def _next_old_new(pkgs):
            """ Returns latest pair of (oldpkg, newpkg) for each package
                name. If that name doesn't exist, then it returns None for
                that package. """
            last = None
            npkg = opkg = None
            for pkg in sorted(pkgs):
                if compare_arch:
                    key = (pkg.name, pkg.arch)
                else:
                    key = pkg.name

                if last is None:
                    last = key
                if last != key:
                    yield opkg, npkg
                    opkg = npkg = None
                    last = key

                if pkg.repo.id.startswith('old'):
                    opkg = pkg
                else:
                    assert pkg.repo.id.startswith('new')
                    npkg = pkg
            if opkg is not None or npkg is not None: 
                yield opkg, npkg

        for opkg, npkg in _next_old_new(self.pkgSack.returnPackages()):
            if opkg is None:
                add.append(npkg)
            elif npkg is None:
                remove.append(opkg)
            elif not npkg.verEQ(opkg):
                modified.append((npkg, opkg))

        ao = {}
        for pkg in add:
            for obs_name in set(pkg.obsoletes_names):
                if obs_name not in ao:
                    ao[obs_name] = []
                ao[obs_name].append(pkg)

        #  Note that this _only_ shows something when you have an additional
        # package obsoleting a removed package. If the obsoleted package is
        # still there (somewhat "common") or the obsoleter is an update (dito)
        # you _don't_ get hits here.
        for po in remove:
            # Remember: Obsoletes are for package names only.
            poprovtup = (po.name, 'EQ', (po.epoch, po.ver, po.release))
            for newpo in ao.get(po.name, []):
                if newpo.inPrcoRange('obsoletes', poprovtup):
                    obsoleted[po] = newpo
                    break

        ygh = yum.misc.GenericHolder()
        ygh.add = add
        ygh.remove = remove
        ygh.modified = modified
        ygh.obsoleted = obsoleted
                 
        return ygh


def parseArgs(args):
    """
       Parse the command line args. return a list of 'new' and 'old' repos
    """
    usage = """
    repodiff: take 2 or more repositories and return a list of added, removed and changed
              packages.
              
    repodiff --old=old_repo_baseurl --new=new_repo_baseurl """
    
    parser = OptionParser(version = "repodiff 0.2", usage=usage)
    # query options
    parser.add_option("-n", "--new", default=[], action="append",
                      help="new baseurl[s] for repos")
    parser.add_option("-o", "--old", default=[], action="append",
                      help="old baseurl[s] for repos")
    parser.add_option("-q", "--quiet", default=False, action='store_true')
    parser.add_option("-a", "--archlist", default=[], action="append",
                      help="In addition to src.rpms, any arch you want to include")
    parser.add_option("--compare-arch", default=False, action='store_true',
                      help="When comparing binary repos. also compare the arch of packages, to see if they are different")
    parser.add_option("-s", "--size", default=False, action='store_true',
                      help="Output size changes for any new->old packages")
    parser.add_option("--downgrade", default=False, action='store_true',
                      help="Output upgrade/downgrade separately")
    parser.add_option("--simple",  default=False, action='store_true',
                      help="output simple format")
    (opts, argsleft) = parser.parse_args()

    if not opts.new or not opts.old:
        parser.print_usage()
        sys.exit(1)

    # sort out the comma-separated crap we somehow inherited.    
    archlist = []
    for a in opts.archlist:
        for arch in a.split(','):
            archlist.append(arch)
    if not archlist :
        archlist = ['src']

    opts.archlist = archlist             
    
    return opts

def _out_mod(opts, oldpkg, pkg, sizechange):
    if opts.simple:
        if opts.compare_arch:
            msg = "%s: %s ->  %s" % (pkg.name, oldpkg, pkg)
        else:
            msg = "%s: %s-%s-%s ->  %s-%s-%s" % (pkg.name, oldpkg.name, 
                                                 oldpkg.ver, oldpkg.rel,
                                                 pkg.name, pkg.ver,
                                                 pkg.rel)
    else:
        if opts.compare_arch:
            msg = "%s" % pkg
        else:
            msg = "%s-%s-%s" % (pkg.name, pkg.ver, pkg.rel)
        dashes = "-" * len(msg) 
        msg += "\n%s\n" % dashes
        # get newest clog time from the oldpkg
        # for any newer clog in pkg
        # print it
        oldlogs = oldpkg.changelog
        if len(oldlogs):
            #  Don't sort as that can screw the order up when time is the
            # same.
            oldtime    = oldlogs[0][0]
            oldauth    = oldlogs[0][1]
            oldcontent = oldlogs[0][2]
            for (t, author, content) in  pkg.changelog:
                if t < oldtime:
                    break
                if ((t == oldtime) and (author == oldauth) and
                    (content == oldcontent)):
                    break
                tm = datetime.date.fromtimestamp(int(t))
                tm = tm.strftime("%a %b %d %Y")
                msg += "* %s %s\n%s\n\n" % (tm, to_unicode(author),
                                            to_unicode(content))
            if opts.size:
                msg += "\nSize change: %s bytes\n" % sizechange

    print msg

def main(args):
    opts = parseArgs(args)

            
    my = DiffYum()
    archlist_changed = False
    if opts.archlist and not opts.archlist[0] == 'src':
        my.preconf.arch = opts.archlist[0]
        archlist_changed = True

    if opts.quiet:
        my.conf.debuglevel=0
        my.doLoggingSetup(my.conf.debuglevel, my.conf.errorlevel)
    
    my.conf.disable_excludes = ['all']
    my.dy_shutdown_all_other_repos()
    my.dy_archlist = opts.archlist
    if archlist_changed:
        my.dy_archlist += my.arch.archlist

    if not opts.quiet: print 'setting up repos'
    for r in opts.old:
        if not opts.quiet: print "setting up old repo %s" % r
        try:
            my.dy_setup_repo('old', r)
        except yum.Errors.RepoError, e:
            print "Could not setup repo at url  %s: %s" % (r, e)
            sys.exit(1)
    
    for r in opts.new:
        if not opts.quiet: print "setting up new repo %s" % r
        try:
            my.dy_setup_repo('new', r)
        except yum.Errors.RepoError, e:
            print "Could not setup repo at url %s: %s" % (r, e)
            sys.exit(1)
    if not opts.quiet: print 'performing the diff'
    ygh = my.dy_diff(opts.compare_arch)
    


    total_sizechange = 0
    add_sizechange = 0
    remove_sizechange = 0
    mod_sizechange = 0
    up_sizechange = 0
    down_sizechange = 0
    upgraded_pkgs = 0
    downgraded_pkgs = 0
    if ygh.add:
        for pkg in sorted(ygh.add):
            if opts.compare_arch:
                print 'New package: %s' % pkg
            else:
                print 'New package: %s-%s-%s' % (pkg.name, pkg.ver, pkg.rel)
            print '             %s\n' % to_unicode(pkg.summary)
            add_sizechange += int(pkg.size)
                
    if ygh.remove:
        for pkg in sorted(ygh.remove):
            if opts.compare_arch:
                print 'Removed package: %s' % pkg
            else:
                print 'Removed package:  %s-%s-%s' % (pkg.name, pkg.ver,pkg.rel)
            if pkg in ygh.obsoleted:
                print 'Obsoleted by   :  %s' % ygh.obsoleted[pkg]
            remove_sizechange += (int(pkg.size))
                
    if ygh.modified:
        print '\nUpdated Packages:\n'
        for (pkg, oldpkg) in sorted(ygh.modified):
            if opts.downgrade and pkg.verLT(oldpkg):
                continue

            upgraded_pkgs += 1
            sizechange = None
            if opts.size:
                sizechange = int(pkg.size) - int(oldpkg.size)
                if opts.downgrade:
                    up_sizechange += sizechange
                else:
                    mod_sizechange += sizechange
            _out_mod(opts, oldpkg, pkg, sizechange)

        if opts.downgrade:
            print '\nDowngraded Packages:\n'
            for (pkg, oldpkg) in sorted(ygh.modified):
                if pkg.verGT(oldpkg):
                    continue

                downgraded_pkgs += 1
                sizechange = None
                if opts.size:
                    sizechange = int(pkg.size) - int(oldpkg.size)
                    down_sizechange += sizechange
                _out_mod(opts, oldpkg, pkg, sizechange)


    if (not ygh.add and not ygh.remove and not ygh.modified and
        not my.pkgSack.searchNevra(arch='src')):
        print "** No 'src' pkgs in any repo. maybe see docs. on --archlist?"

    print '\nSummary:'
    print 'Added Packages: %s' % len(ygh.add)
    print 'Removed Packages: %s' % len(ygh.remove)
    if not opts.downgrade:
        print 'Modified Packages: %s' % len(ygh.modified)
    else:
        print 'Upgraded Packages: %s' % upgraded_pkgs
        print 'Downgraded Packages: %s' % downgraded_pkgs
    if opts.size:
        print 'Size of added packages: %s (%s)' % (add_sizechange,
                                                   bkMG(add_sizechange))

        if not opts.downgrade:
            msg = 'Size change of modified packages: %s (%s)'
            print msg % (mod_sizechange, bkMG(mod_sizechange))

            total_sizechange = add_sizechange +mod_sizechange -remove_sizechange
        else:
            msg = 'Size change of upgraded packages: %s (%s)'
            print msg % (up_sizechange, bkMG(up_sizechange))
            msg = 'Size change of downgraded packages: %s (%s)'
            print msg % (down_sizechange, bkMG(down_sizechange))

            total_sizechange = (add_sizechange +
                                up_sizechange + down_sizechange -
                                remove_sizechange)

        msg = 'Size of removed packages: %s (%s)'
        print msg % (remove_sizechange, bkMG(remove_sizechange))
        msg = 'Size change: %s (%s)'
        print msg % (total_sizechange, bkMG(total_sizechange))
    
      
if __name__ == "__main__":
    # This test needs to be before locale.getpreferredencoding() as that
    # does setlocale(LC_CTYPE, "")
    try:
        locale.setlocale(locale.LC_ALL, '')
    except locale.Error, e:
        # default to C locale if we get a failure.
        print >> sys.stderr, 'Failed to set locale, defaulting to C'
        os.environ['LC_ALL'] = 'C'
        locale.setlocale(locale.LC_ALL, 'C')
        
    if True: # not sys.stdout.isatty():
        import codecs
        sys.stdout = codecs.getwriter(locale.getpreferredencoding())(sys.stdout)
        sys.stdout.errors = 'replace'

    main(sys.argv[1:])
    

Rosenblum TV: Video training, virtual workshops, classes, tutorials
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  • The Power of Storytelling
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RE-INVENTING THE TELEVISION NEWS BUSINESS*

A revolution in video storytelling

Creating entirely new & cost-effective production methods

From the world leaders in video production training and the creators of Character Driven Storytelling™

*and every other business that uses video

WHAT WE DO

Over the past 35 years, we have designed, built or restructured some of the most powerful news and journalism companies in the world.

We replace the traditional TV news ‘crew’ with one highly trained journalist, working alone with nothing but an iPhone.

No more TV news ‘crews’, no editors and no field producers.

This is television news done the way newspaper journalism is done – one reporter with their electronic pad and pencil.

In doing this, we can cut the cost of production by as much as 75% while increasing ratings and audience engagement.

In the place of conventional TV news ‘packages’ – ie, reporter stand up, interview, b-roll, man on the street, we marry great journalism with Netflix and Hollywood storytelling.

It’s a combination that works.

We have taken most of our clients to #1 in their respective markets.

And it’s not just for news. Any company, any profit, any NGO and anyone else who is online needs to tell their story in compelling yet cost-effective video. We can teach you to do that. Either in person or virtually.

EXAMPLES OF WHAT WE CAN TEACH YOUR STAFF TO PRODUCE

ITAY HOD

Itay Hod, MMJ with KPIX/CBS in San Francisco, took the 5-Day Intensive Video Storytelling Bootcamp in 2018.

Because he works alone, with only an iPhone, he was able to embed himself with a homeless family.

Here’s the story he produced in a one-day turn.

KIET DO

Kiet Do, an MMJ with KPIX/CBS in San Francisco, took the 5-Day Intensive Video Storytelling Bootcamp in 2021.

Here is a story he produced, all on his own, with only an iPhone and in a one-day turn.

TAYLOR SCHAUB

Taylor Schaub, an MMJ with Spectrum News 1 in LA, took the 5-Day Intensive Video Storytelling Bootcamp in 2023.

Here is a story he turned in only one day, using only an iPhone. It was the first video story he ever did and it was nominated for an Emmy.

THE BOOTCAMP

How do we convert stations and whole networks to working in this way?

Since 1988, we have run intensive 5-Day Video Storytelling Bootcamps

We have done these all over the world.

These are hands-on bootcamps, and participants learn an entirely new way of creating TV news stories.

-We shoot at a 3:1 ratio or lower, so turnaround times are fast.

-We go directly from camera to timelilne and edit – no written scripts.  We work in the medium of pictures and sound.

-We are entirely character-driven.

-We are driven by pictures and real events.

-We are focused almost entirely on ’the viewer experience’.

Since 1988, more than 70,000 journalists around the world have taken our bootcamps, either in person on virtualy.

Case Studies

CBS Case Study Logos
CBS News

We have started to work with CBS News, bringing our ideas of character-driven storytelling to one of the most successful and biggest networks in the United States. Since beginning to work with them ratings have climbed and more importantly, audience engagement is through the ceiling.

Learn More
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New York Times Television

We started New York Times Television in 1990 and it was the first paper to be brought into the world of TV. It quickly became one of the most successful non-fiction production companies in the United States. The series and documentaries we produced won many awards including multiple Emmys.

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BBC Case Study Logos
The BBC

We have been working with the BBC since the year 2000 helping to convert their national news network to our visual storytelling technique. Most recently we have trained teams from their sports, documentaries, and comedy divisions to make character-driven stories using only smartphones.

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Spectrum Case Study Logos
Spectrum News

For the past five years we have worked with Spectrum News to introduce and train their journalists on visual, character driven storytelling using smartphones helping to create a different kind of local news for their network of 24-Hour News Stations across the United States.

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UN Case Study Logos
The United Nations

In 2006, we were approached by the United Nations. Rather than rely on news outlets, it would be much easier to train the field operatives to produce their own stories. We spent two years working with the UN, training more than 100 of their staff in bootcamps in Geneva and Nairobi.

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Star Ledger Case Study Logos
The Newark Star-Ledger

We trained 50 print reporters at the paper to shoot and tell their own stories, in conjunction with their print work. We built a TV newsroom in their existing print newsroom – you could not ask for a better set and they began to live stream their stories in conjunction with their print work.

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Mcgraw Hill

We spent two years with McGraw Hill, training more than 150 of their staffers, making them completely video literate. McGraw/Hill media properties we transit included Business Week, Aviation Week, (what was the name of the architecture magazine), and JD Power and Associates.

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Voice of America

In 1990, we were approached by The Voice of America, the official broadcasting agency for the United States Government. When we met with VOA, they were only a short wave radio broadcaster, but working with them, we took them into television, launching VOA-TV.

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Oyster Yachts

British based Oyster Yachts makes some of the finest yachts in the world. Like every other company, they had to find a way to feed the never-ending video demands of social media – sites like Instagram and TikTok. We trained the Oyster staff to tell their own stories, using only iPhones.

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Scottish Environmental Protection Agency

We were approached by SEPA, the Scottish Environmental Protection Agency because they had to continually find a way to ‘feed the media beast’. The result was that SEPA was able to tell their own stories, whenever they wanted, and at almost no additional cost.

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Image 11-11-22 at 6.25 PM

Michael on Media

Michael Rosenblum has been writing about the media since 1988. His work and ideas have appeared in The Guardian, The Huffington Post, Ilkeston Life and many other publications.

He has been blogging regularly for the past 35 years on this subject. Having taught media studies at Columbia University, NYU and now the University of Oxford, he is considered an expert on this subject.

Continue reading this post or look back at previous posts.

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