blob: bad7ce58ea368a2211ae750a7be710f261c2e9ae [file] [log] [blame]
#!/usr/bin/env python3
# Copyright 2020 Efabless Corporation
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""
takes a lef file and a rectangle => trims all RECT statements within the area
"""
import re
import sys
ARGV = sys.argv
if len(ARGV) < 5:
print("Usage " + ARGV[0] + " llx lly urx ury")
sys.exit(-1)
LLX = float(ARGV[1])
LLY = float(ARGV[2])
URX = float(ARGV[3])
URY = float(ARGV[4])
LAYERS = ["li1", "met1", "met2", "met3", "met4", "met5"]
RECT_REGEX = (
r"^\s*RECT\s+(-?\d+\.?\d*)\s+(-?\d+\.?\d*)\s+(-?\d+\.?\d*)\s+(-?\d+\.?\d*)\s+;$"
)
# SIZE_REGEX = r"^\s*SIZE\s+(-?\d+\.?\d*)\s+BY\s+\s+(-?\d+\.?\d*);$"
def get_cut_rect_x(rect, axis):
"""
cuts one rect about an x axis
"""
rects = [rect]
llx, lly, urx, ury = rect
if llx < axis and urx > axis:
rects = [(llx, lly, axis, ury), (axis, lly, urx, ury)]
return rects
def get_cut_rect_y(rect, axis):
"""
cuts one rect about an y axis
"""
rects = [rect]
llx, lly, urx, ury = rect
if lly < axis and ury > axis:
rects = [(llx, lly, urx, axis), (llx, axis, urx, ury)]
return rects
def rects2cutrects(rects, axis, direction):
"""
cut a list of rects (4-tuple) and returns another list of of rects (4-tuple)
cut by an x or y axis
axix is a position
direction is either 'x' or 'y'
"""
rects_cut = []
if direction == "x":
for rect in rects:
rects_cut += get_cut_rect_x(rect, axis)
else:
for rect in rects:
rects_cut += get_cut_rect_y(rect, axis)
return rects_cut
def get_all_cut_rects(rect):
"""
cut a rect about the 4 axis LLX, LLY, URX, URY
"""
rects = [rect]
rects = rects2cutrects(rects, LLX, "x")
rects = rects2cutrects(rects, URX, "x")
rects = rects2cutrects(rects, LLY, "y")
rects = rects2cutrects(rects, URY, "y")
return rects
def rectify(rects):
"""
gets a list of already cut rects (4-tuple) and returns another list of of
rects (4-tuple) that are not within LLX, LLY, URX, URY
"""
rect_outside = []
for rect in rects:
llx, lly, urx, ury = rect
if (
llx < LLX
or llx > URX
or urx > URX
or urx < LLX
or lly < LLY
or lly > URY
or ury > URY
or ury < LLY
):
rect_outside += [rect]
return rect_outside
def print_rects(prefix, rects):
for rect in rects:
llx, lly, urx, ury = rect
print(prefix + "RECT %f %f %f %f ;" % (llx, lly, urx, ury))
layer = ""
for line in sys.stdin:
if line.isspace():
continue
rect_match = re.search(RECT_REGEX, line)
if rect_match:
llx, lly, urx, ury = (
float(rect_match.group(1)),
float(rect_match.group(2)),
float(rect_match.group(3)),
float(rect_match.group(4)),
)
if (
(lly < LLY and ury < LLY)
or (lly > URY and ury > URY)
or (llx < LLX and urx < LLX)
or (llx > URX and urx > URX)
): # outside the whole thing
rects = [(llx, lly, urx, ury)]
else:
rects = rectify(get_all_cut_rects((llx, lly, urx, ury)))
if len(rects) > 0:
print(layer)
if layer != "": # LAYER printed, clear it
layer = ""
print_rects(line[: line.find("R")], rects)
else:
if line.find("LAYER") != -1: # print it only if there're RECTs
layer = line
else:
print(line, end="")