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# SPDX-License-Identifier: AGPL-3.0-or-later
"""build environment used by shell scripts
"""
# set path
import sys
import importlib.util
import re
from pathlib import Path
repo_root = Path(__file__).resolve().parent.parent
def main(setting_name):
settings_path = repo_root / "searx" / "settings.yml"
with open(settings_path) as f:
settings = parse_yaml(f.read())
print(get_setting_value(settings, setting_name))
def get_setting_value(settings, name):
value = settings
for a in name.split("."):
value = value[a]
if value is True:
value = "1"
elif value is False:
value = ""
return value
def parse_yaml(yaml_str):
"""A simple YAML parser that converts a YAML string to a Python dictionary.
This parser can handle nested dictionaries, but does not handle list or JSON
like structures.
Good enough parser to get the values of server.base_url, server.port and
server.bind_address
"""
def get_type_and_value_without_comment(line):
"""Extract value without comment and quote
Returns a tuple:
1. str or None: str when the value is written inside quote, None otherwise
2. the value without quote if any
"""
match = re.search(r"\"(.*)\"(\s+#)?|\'(.*)\'(\s+#)?|([^#]*)(\s+#)?", line)
if match:
g = match.groups()
if g[0] is not None:
return str, g[0]
elif g[2] is not None:
return str, g[2]
elif g[4] is not None:
return None, g[4].strip()
return None, line.strip()
# fmt: off
true_values = ("y", "Y", "yes", "Yes", "YES", "true", "True", "TRUE", "on", "On", "ON",)
false_values = ("n", "N", "no", "No", "NO", "false", "False", "FALSE", "off", "Off", "OFF",)
# fmt: on
def process_line(line):
"""Extract key and value from a line, considering its indentation."""
if ": " in line:
key, value = line.split(": ", 1)
key = key.strip()
value_type, value = get_type_and_value_without_comment(value)
if value in true_values and value_type is None:
value = True
elif value in false_values and value_type is None:
value = False
elif value.replace(".", "").isdigit() and value_type is None:
for t in (int, float):
try:
value = t(value)
break
except ValueError:
continue
return key, value
return None, None
def get_indentation_level(line):
"""Determine the indentation level of a line."""
return len(line) - len(line.lstrip())
yaml_dict = {}
lines = yaml_str.split("\n")
stack = [yaml_dict]
for line in lines:
if not line.strip():
continue # Skip empty lines
indentation_level = get_indentation_level(line)
# Assuming 2 spaces per indentation level
# see .yamllint.yml
current_level = indentation_level // 2
# Adjust the stack based on the current indentation level
while len(stack) > current_level + 1:
stack.pop()
if line.endswith(":"):
key = line[0:-1].strip()
new_dict = {}
stack[-1][key] = new_dict
stack.append(new_dict)
else:
key, value = process_line(line)
if key is not None:
stack[-1][key] = value
return yaml_dict
if __name__ == "__main__":
main(sys.argv[1])
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