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