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#!/usr/bin/env python
#coding=utf8
"""
stdin : the original xfig file
stdout : the output xfig file
args : all depths we want to keep
"""
from __future__ import print_function
import optparse
import os.path
import re
import sys
def main():
parser = optparse.OptionParser()
(options, args) = parser.parse_args()
display = 0
in_display = 0
start_line = ''
warnerror_re = re.compile(r"^(LaTeX|Package|Class)( (.*))? (Warning:|Error:)")
fullbox_re = re.compile(r"^(Underfull|Overfull) \\[hv]box")
accu = ''
for line in sys.stdin:
if display > 0:
display -= 1
if line[0:4].lower() in ('info', 'warn') or line[0:5].lower() == 'error':
display = 0
line_groups = warnerror_re.match(line)
if line_groups:
start_line = line_groups.group(3)
if not start_line:
start_line = ''
if line_groups.group(2):
start_line = "(" + start_line + ")"
display = 1
in_display = 1
elif (start_line != '') and (line[0:len(start_line)] == start_line):
display = 1
elif line == "\n":
in_display = 0
elif line[0:4] == 'Chap':
display = 1
elif fullbox_re.match(line):
display = 2
if display:
print(accu, end="")
accu = line
elif in_display:
print(accu[0:-1], end="")
accu = line
if __name__ == "__main__":
main()
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