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import platform
import re
from pathlib import Path
from urllib.parse import quote
# What characters are forbidden in Windows and Linux directory names?
# https://stackoverflow.com/questions/1976007/what-characters-are-forbidden-in-windows-and-linux-directory-names
INVALID_FILE_PATH_CHARS = [
"\\",
"/",
":",
"*",
"?",
'"',
"<",
">",
"|",
"\n",
"\t",
"\r",
*[chr(i) for i in range(32)],
]
WINDOWS_INVALID_FILE_PATH_NAMES = [
"con",
"prn",
"aux",
"nul",
*[f"com{i+1}" for i in range(10)],
*[f"lpt{i+1}" for i in range(10)],
]
class FilepathConverter:
def __init__(self, parent: str = None):
self.output_root = Path(__file__).parents[1] / "files"
self.parent = parent
def preprocess(self, input_string):
return input_string
def validate(self, input_string):
filename = input_string
for char in INVALID_FILE_PATH_CHARS:
filename = filename.replace(char, "_")
if platform.system() == "Windows":
filename_base = filename.split(".")[0]
if filename_base.lower() in WINDOWS_INVALID_FILE_PATH_NAMES:
filename_base = filename_base + "_"
filename = ".".join([filename_base, *filename.split(".")[1:]])
return filename
def append_extension(self, filename, accept_exts=[".html", ".htm"], ext=".html"):
if ext:
filename_ext = "." + filename.split(".")[-1]
if filename_ext.lower() not in accept_exts:
filename += ext
return filename
def convert(self, input_string, parent=None):
filename = self.preprocess(input_string)
filename = self.validate(filename)
filename = self.append_extension(filename)
parent = parent or self.parent
if parent:
filepath = self.output_root / parent / filename
else:
filepath = self.output_root / filename
self.filename = filename
self.filepath = filepath
return self.filepath
class UrlToFilepathConverter(FilepathConverter):
def __init__(self, parent: str = None):
super().__init__(parent)
self.output_root = self.output_root / "urls"
def preprocess(self, url):
filename = url.split("//")[1]
return filename
class QueryToFilepathConverter(FilepathConverter):
def __init__(self, parent: str = None):
super().__init__(parent)
self.output_root = self.output_root / "queries"
if __name__ == "__main__":
query = "python 教程"
query_converter = QueryToFilepathConverter()
print(query_converter.convert(query))
# url = "https://trafilatura.readthedocs.io/en/latest/quickstart.html"
url = (
"https://stackoverflow.com/questions/295135/turn-a-string-into-a-valid-filename"
)
url_converter = UrlToFilepathConverter(parent=query)
print(url_converter.convert(url))
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