eol: added filter aliases for backwards compatibility with win32text
This makes it possible to switch most win32text configurations (i.e. those
that use cleverencode and cleverdecode) to hgeol simply by disabling one and
enabling the other. Any rules found in repo-specific .hgeol files will be
appended to the configuration in .hgrc.
# Revision graph generator for Mercurial
#
# Copyright 2008 Dirkjan Ochtman <dirkjan@ochtman.nl>
# Copyright 2007 Joel Rosdahl <joel@rosdahl.net>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
"""supports walking the history as DAGs suitable for graphical output
The most basic format we use is that of::
(id, type, data, [parentids])
The node and parent ids are arbitrary integers which identify a node in the
context of the graph returned. Type is a constant specifying the node type.
Data depends on type.
"""
from mercurial.node import nullrev
CHANGESET = 'C'
def revisions(repo, start, stop):
"""cset DAG generator yielding (id, CHANGESET, ctx, [parentids]) tuples
This generator function walks through the revision history from revision
start to revision stop (which must be less than or equal to start). It
returns a tuple for each node. The node and parent ids are arbitrary
integers which identify a node in the context of the graph returned.
"""
cur = start
while cur >= stop:
ctx = repo[cur]
parents = set([p.rev() for p in ctx.parents() if p.rev() != nullrev])
yield (cur, CHANGESET, ctx, sorted(parents))
cur -= 1
def filerevs(repo, path, start, stop, limit=None):
"""file cset DAG generator yielding (id, CHANGESET, ctx, [parentids]) tuples
This generator function walks through the revision history of a single
file from revision start down to revision stop.
"""
filerev = len(repo.file(path)) - 1
rev = stop + 1
count = 0
while filerev >= 0 and rev > stop:
fctx = repo.filectx(path, fileid=filerev)
parents = set([f.linkrev() for f in fctx.parents() if f.path() == path])
rev = fctx.rev()
if rev <= start:
yield (rev, CHANGESET, fctx.changectx(), sorted(parents))
count += 1
if count == limit:
break
filerev -= 1
def nodes(repo, nodes):
"""cset DAG generator yielding (id, CHANGESET, ctx, [parentids]) tuples
This generator function walks the given nodes. It only returns parents
that are in nodes, too.
"""
include = set(nodes)
for node in nodes:
ctx = repo[node]
parents = set([p.rev() for p in ctx.parents() if p.node() in include])
yield (ctx.rev(), CHANGESET, ctx, sorted(parents))
def colored(dag):
"""annotates a DAG with colored edge information
For each DAG node this function emits tuples::
(id, type, data, (col, color), [(col, nextcol, color)])
with the following new elements:
- Tuple (col, color) with column and color index for the current node
- A list of tuples indicating the edges between the current node and its
parents.
"""
seen = []
colors = {}
newcolor = 1
for (cur, type, data, parents) in dag:
# Compute seen and next
if cur not in seen:
seen.append(cur) # new head
colors[cur] = newcolor
newcolor += 1
col = seen.index(cur)
color = colors.pop(cur)
next = seen[:]
# Add parents to next
addparents = [p for p in parents if p not in next]
next[col:col + 1] = addparents
# Set colors for the parents
for i, p in enumerate(addparents):
if not i:
colors[p] = color
else:
colors[p] = newcolor
newcolor += 1
# Add edges to the graph
edges = []
for ecol, eid in enumerate(seen):
if eid in next:
edges.append((ecol, next.index(eid), colors[eid]))
elif eid == cur:
for p in parents:
edges.append((ecol, next.index(p), color))
# Yield and move on
yield (cur, type, data, (col, color), edges)
seen = next