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# SPDX-License-Identifier: GPL-2.0-or-later
# FRR CLI preprocessor
#
# Copyright (C) 2017 David Lamparter for NetDEF, Inc.
import os, stat
try:
from enum import IntFlag as _IntFlag
except ImportError:
# python <3.6
from enum import IntEnum as _IntFlag # type: ignore
import _clippy
from _clippy import (
parse,
Graph,
GraphNode,
CMD_ATTR_YANG,
CMD_ATTR_HIDDEN,
CMD_ATTR_DEPRECATED,
CMD_ATTR_NOSH,
)
frr_top_src = os.path.dirname(
os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
)
def graph_iterate(graph):
"""iterator yielding all nodes of a graph
nodes arrive in input/definition order, graph circles are avoided.
"""
queue = [(graph.first(), frozenset(), 0)]
while len(queue) > 0:
node, stop, depth = queue.pop(0)
yield node, depth
join = node.join()
if join is not None:
queue.insert(0, (join, stop.union(frozenset([node])), depth))
join = frozenset([join])
stop = join or stop
nnext = node.next()
for n in reversed(nnext):
if n not in stop and n is not node:
queue.insert(0, (n, stop, depth + 1))
def dump(graph):
"""print out clippy.Graph"""
for i, depth in graph_iterate(graph):
print("\t%s%s %r" % (" " * (depth * 2), i.type, i.text))
def wrdiff(filename, buf, reffiles=[]):
"""write buffer to file if contents changed"""
expl = ""
if hasattr(buf, "getvalue"):
buf = buf.getvalue()
old = None
try:
old = open(filename, "r").read()
except:
pass
if old == buf:
for reffile in reffiles:
# ensure output timestamp is newer than inputs, for make
reftime = os.stat(reffile)[stat.ST_MTIME]
outtime = os.stat(filename)[stat.ST_MTIME]
if outtime <= reftime:
os.utime(filename, (reftime + 1, reftime + 1))
# sys.stderr.write('%s unchanged, not written\n' % (filename))
return
newname = "%s.new-%d" % (filename, os.getpid())
with open(newname, "w") as out:
out.write(buf)
os.rename(newname, filename)
class CmdAttr(_IntFlag):
YANG = CMD_ATTR_YANG
HIDDEN = CMD_ATTR_HIDDEN
DEPRECATED = CMD_ATTR_DEPRECATED
NOSH = CMD_ATTR_NOSH
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