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ui: add ui.write() output labeling API...
ui: add ui.write() output labeling API This adds output labeling support with the following methods: - ui.write(..., label='topic.name topic2.name2 ...') - ui.write_err(.., label=...) - ui.popbuffer(labeled=False) - ui.label(msg, label) By adding an API to label output directly, the color extension can forgo parsing command output and instead override the above methods to insert ANSI color codes. GUI tools can also override the above methods and use the labels to do GUI-specific styling. popbuffer gains a labeled argument that, when set to True, returns its buffered output with labels handled. In the case of the color extension, this would return output with color codes embedded. For existing users that use this method to capture and parse output, labels are discarded and output returned as normal when labeled is False (the default). Existing wrappers of ui.write() and ui.write_err() should make sure to accept its new **opts argument.

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graphmod.py
122 lines | 3.8 KiB | text/x-python | PythonLexer
# 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 = [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 = [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 = [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