graph: add outputgraph() function, called by ascii() to print
the graph to the ui.
This allows a cleaner entrypoint for extensions to tweak the
graph output without needing to rewrite all of ascii(), or needing
to manually guess where the graph nodes/edges end and the rev
note portion begins.
This patch does not affect graph output or behavior in any way.
Differential Revision: https://phab.mercurial-scm.org/D3655
--- a/mercurial/graphmod.py Wed Feb 28 03:07:48 2018 +0530
+++ b/mercurial/graphmod.py Thu May 24 23:05:12 2018 -0700
@@ -341,6 +341,22 @@
'graphshorten': False,
}
+def outputgraph(ui, graph):
+ """outputs an ASCII graph of a DAG
+
+ this is a helper function for 'ascii' below.
+
+ takes the following arguments:
+
+ - ui to write to
+ - graph data: list of { graph nodes/edges, text }
+
+ this function can be monkey-patched by extensions to alter graph display
+ without needing to mimic all of the edge-fixup logic in ascii()
+ """
+ for (ln, logstr) in graph:
+ ui.write((ln + logstr).rstrip() + "\n")
+
def ascii(ui, state, type, char, text, coldata):
"""prints an ASCII graph of the DAG
@@ -469,9 +485,8 @@
# print lines
indentation_level = max(ncols, ncols + coldiff)
- for (line, logstr) in zip(lines, text):
- ln = "%-*s %s" % (2 * indentation_level, "".join(line), logstr)
- ui.write(ln.rstrip() + '\n')
+ lines = ["%-*s " % (2 * indentation_level, "".join(line)) for line in lines]
+ outputgraph(ui, zip(lines, text))
# ... and start over
state['lastcoldiff'] = coldiff