import re

def select(

text,

lines=None,

from_token=None,

to_token=None,

block=None,

inside_block=None,

lang=None,

):

selected_lines = []

if lines:

for line_range in lines.split(","):

range_match = re.match(r"(\d+)-(\d+)", line_range)

if range_match:

start = int(range_match.group(1))

end = int(range_match.group(2))

for i in range(start, end + 1):

selected_lines.append(i)

elif line_range.strip() != "":

selected_lines.append(int(line_range))

if block:

i = 0

delim_count = 0

for line in text.splitlines():

first_line_of_block = False

i = i + 1

if block in line and delim_count <= 0:

delim_count = 0

first_line_of_block = True

delim_count += line.count("{")

if delim_count > 0:

if not first_line_of_block:

delim_count += line.count("{")

selected_lines.append(i)

delim_count -= line.count("}")

if inside_block:

i = 0

delim_count = 0

for line in text.splitlines():

first_line_of_block = False

i = i + 1

if inside_block in line and delim_count <= 0:

delim_count = 0

first_line_of_block = True

delim_count += line.count("{")

delim_count -= line.count("}")

if delim_count > 0 and not first_line_of_block:

delim_count += line.count("{")

selected_lines.append(i)

if from_token and to_token:

i = 0

active = False

for line in text.splitlines():

i = i + 1

if not active and from_token in line:

active = True

if active:

selected_lines.append(i)

if active and to_token in line:

active = False

result = ""

source_lines = text.splitlines()

last_selected = 0

for i in sorted(selected_lines):

if i > (last_selected + 1) and last_selected != 0:

result += "\n⋯\n\n"

result += source_lines[i - 1] + "\n"

last_selected = i

if result == "":

return text

return result