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