comparison mercurial/commands.py @ 14304:64c22db0bc38

add debugrevlog command

Displays data and statistics about revlogs, including generaldelta details.

14303:e2be0bba0d83

        rel = m.rel(abs)
        if o:
            ui.write(_("%s renamed from %s:%s\n") % (rel, o[0], hex(o[1])))
        else:
            ui.write(_("%s not renamed\n") % rel)

@command('debugrevspec', [], ('REVSPEC'))
def debugrevspec(ui, repo, expr):
    '''parse and apply a revision specification'''
    if ui.verbose:

14304:64c22db0bc38

        rel = m.rel(abs)
        if o:
            ui.write(_("%s renamed from %s:%s\n") % (rel, o[0], hex(o[1])))
        else:
            ui.write(_("%s not renamed\n") % rel)

@command('debugrevlog', [], _('FILE'))
def debugrevlog(ui, repo, file_):
    """show data and statistics about a revlog"""
    r = None
    if repo:
        filelog = repo.file(file_)
        if len(filelog):
            r = filelog
    if not r:
        r = revlog.revlog(scmutil.opener(os.getcwd(), audit=False), file_)

    v = r.version
    format = v & 0xFFFF
    flags = []
    gdelta = False
    if v & revlog.REVLOGNGINLINEDATA:
        flags.append('inline')
    if v & revlog.REVLOGGENERALDELTA:
        gdelta = True
        flags.append('generaldelta')

    nummerges = 0
    numchains = 0
    numprev = 0
    nump1 = 0
    nump2 = 0
    numother = 0
    nump1prev = 0
    nump2prev = 0

    datasize = [None, 0, 0L]
    snapshotsize = [None, 0, 0L]
    deltasize = [None, 0, 0L]

    def addsize(size, l):
        if l[0] is None or size < l[0]:
            l[0] = size
        if size > l[1]:
            l[1] = size
        l[2] += size

    numrevs = len(r)
    for rev in xrange(numrevs):
        p1, p2 = r.parentrevs(rev)
        delta = r.deltaparent(rev)
        if format > 0:
            addsize(r.rawsize(rev), datasize)
        if p2 != nullrev:
            nummerges += 1
        size = r.length(rev)
        if delta == nullrev:
            numchains += 1
            addsize(size, snapshotsize)
        else:
            addsize(size, deltasize)
            if gdelta:
                if delta == rev - 1:
                    numprev += 1
                    if delta == p1:
                        nump1prev += 1
                    elif delta == p2:
                        nump2prev += 1
                elif delta == p1:
                    nump1 += 1
                elif delta == p2:
                    nump2 += 1
                elif delta != nullrev:
                    numother += 1

    numotherprev = numprev - nump1prev - nump2prev
    datasize[2] /= numrevs
    snapshotsize[2] /= numchains
    deltasize[2] /= numrevs - numchains

    ui.write('format    : %d\n' % format)
    ui.write('flags     : %s\n' % ', '.join(flags))
    ui.write('revisions : %d\n' % numrevs)
    ui.write('merges    : %d\n' % nummerges)
    ui.write('chains    : %d\n' % numchains)

    if format > 0:
        ui.write('\ndata size (min/max/avg)                : %d / %d / %d\n'
                 % tuple(datasize))
    ui.write('compressed snapshot size (min/max/avg) : %d / %d / %d\n'
             % tuple(snapshotsize))
    ui.write('compressed delta size (min/max/avg)    : %d / %d / %d\n'
             % tuple(deltasize))

    if gdelta:
        ui.write('\ndeltas against prev  : %d\n' % numprev)
        ui.write('  ..where prev = p1  : %d\n' % nump1prev)
        ui.write('  ..where prev = p2  : %d\n' % nump2prev)
        ui.write('  ..other            : %d\n' % numotherprev)
        ui.write('deltas against p1    : %d\n' % nump1)
        ui.write('deltas against p2    : %d\n' % nump2)
        ui.write('deltas against other : %d\n' % numother)

@command('debugrevspec', [], ('REVSPEC'))
def debugrevspec(ui, repo, expr):
    '''parse and apply a revision specification'''
    if ui.verbose: