comparison hgext/graphlog.py @ 5938:9ed100559851

graphlog: add filelog revision grapher

Graph a filelog's DAG, e.g.:  hg glog mercurial/util.py

5937:d8878742a924

# Copyright 2007 Joel Rosdahl <[e-mail]>
#
# This software may be used and distributed according to the terms of
# the GNU General Public License, incorporated herein by reference.

import sys
from mercurial.cmdutil import revrange, show_changeset
from mercurial.i18n import _
from mercurial.node import nullid, nullrev
from mercurial.util import Abort

def revision_grapher(repo, start_rev, stop_rev):
    """incremental revision grapher

    This generator function walks through the revision history from

        n_columns_diff = len(next_revs) - len(revs)
        yield (curr_rev, node, rev_index, edges, len(revs), n_columns_diff)

        revs = next_revs
        curr_rev -= 1

def get_rev_parents(repo, rev):
    return [x for x in repo.changelog.parentrevs(rev) if x != nullrev]

def fix_long_right_edges(edges):

        revs = revrange(repo, rev_opt)
        return (max(revs), min(revs))
    else:
        return (repo.changelog.count() - 1, 0)

def graphlog(ui, repo, **opts):
    """show revision history alongside an ASCII revision graph

    Print a revision history alongside a revision graph drawn with
    ASCII characters.

    (start_rev, stop_rev) = get_revs(repo, opts["rev"])
    stop_rev = max(stop_rev, start_rev - limit + 1)
    if start_rev == nullrev:
        return
    cs_printer = show_changeset(ui, repo, opts)
    grapher = revision_grapher(repo, start_rev, stop_rev)
    repo_parents = repo.dirstate.parents()
    prev_n_columns_diff = 0
    prev_node_index = 0

    for (rev, node, node_index, edges, n_columns, n_columns_diff) in grapher:

         [('l', 'limit', '', _('limit number of changes displayed')),
          ('p', 'patch', False, _('show patch')),
          ('r', 'rev', [], _('show the specified revision or range')),
          ('', 'style', '', _('display using template map file')),
          ('', 'template', '', _('display with template'))],
         _('hg glog [OPTION]...')),
}

5938:9ed100559851

# Copyright 2007 Joel Rosdahl <[e-mail]>
#
# This software may be used and distributed according to the terms of
# the GNU General Public License, incorporated herein by reference.

import os
import sys
from mercurial.cmdutil import revrange, show_changeset
from mercurial.i18n import _
from mercurial.node import nullid, nullrev
from mercurial.util import Abort, canonpath

def revision_grapher(repo, start_rev, stop_rev):
    """incremental revision grapher

    This generator function walks through the revision history from

        n_columns_diff = len(next_revs) - len(revs)
        yield (curr_rev, node, rev_index, edges, len(revs), n_columns_diff)

        revs = next_revs
        curr_rev -= 1

def filelog_grapher(repo, path, start_rev, stop_rev):
    """incremental file log grapher

    This generator function walks through the revision history of a
    single file from revision start_rev to revision stop_rev (which must
    be less than or equal to start_rev) and for each revision emits
    tuples with the following elements:

      - Current revision.
      - Current node.
      - Column of the current node in the set of ongoing edges.
      - Edges; a list of (col, next_col) indicating the edges between
        the current node and its parents.
      - Number of columns (ongoing edges) in the current revision.
      - The difference between the number of columns (ongoing edges)
        in the next revision and the number of columns (ongoing edges)
        in the current revision. That is: -1 means one column removed;
        0 means no columns added or removed; 1 means one column added.
    """

    assert start_rev >= stop_rev
    curr_rev = start_rev
    revs = []
    filerev = repo.file(path).count() - 1
    while filerev >= 0:
        fctx = repo.filectx(path, fileid=filerev)

        # Compute revs and next_revs.
        if filerev not in revs:
            revs.append(filerev)
        rev_index = revs.index(filerev)
        next_revs = revs[:]

        # Add parents to next_revs.
        parents = [f.filerev() for f in fctx.parents()]
        parents_to_add = []
        for parent in parents:
            if parent not in next_revs:
                parents_to_add.append(parent)
        parents_to_add.sort()
        next_revs[rev_index:rev_index + 1] = parents_to_add

        edges = []
        for parent in parents:
            edges.append((rev_index, next_revs.index(parent)))

        changerev = fctx.linkrev()
        if changerev <= start_rev:
            node = repo.changelog.node(changerev)
            n_columns_diff = len(next_revs) - len(revs)
            yield (changerev, node, rev_index, edges, len(revs), n_columns_diff)
        if changerev <= stop_rev:
            break
        revs = next_revs
        filerev -= 1

def get_rev_parents(repo, rev):
    return [x for x in repo.changelog.parentrevs(rev) if x != nullrev]

def fix_long_right_edges(edges):

        revs = revrange(repo, rev_opt)
        return (max(revs), min(revs))
    else:
        return (repo.changelog.count() - 1, 0)

def graphlog(ui, repo, path=None, **opts):
    """show revision history alongside an ASCII revision graph

    Print a revision history alongside a revision graph drawn with
    ASCII characters.

    (start_rev, stop_rev) = get_revs(repo, opts["rev"])
    stop_rev = max(stop_rev, start_rev - limit + 1)
    if start_rev == nullrev:
        return
    cs_printer = show_changeset(ui, repo, opts)
    if path:
        cpath = canonpath(repo.root, os.getcwd(), path)
        grapher = filelog_grapher(repo, cpath, start_rev, stop_rev)
    else:
        grapher = revision_grapher(repo, start_rev, stop_rev)
    repo_parents = repo.dirstate.parents()
    prev_n_columns_diff = 0
    prev_node_index = 0

    for (rev, node, node_index, edges, n_columns, n_columns_diff) in grapher:

         [('l', 'limit', '', _('limit number of changes displayed')),
          ('p', 'patch', False, _('show patch')),
          ('r', 'rev', [], _('show the specified revision or range')),
          ('', 'style', '', _('display using template map file')),
          ('', 'template', '', _('display with template'))],
         _('hg glog [OPTION] [FILE]...')),
}