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# This GitHub Action updates the DIRECTORY.md file (if needed) when doing a git push

name: update_directory_md

on: [push]

jobs:

update_directory_md:

runs-on: ubuntu-latest

steps:

- uses: actions/checkout@master

- uses: actions/setup-python@master

- name: update_directory_md

shell: python

run: |

import os

from typing import Iterator

URL_BASE = "https://github.com/TheAlgorithms/Java/blob/master"

g_output = []

def good_filepaths(top_dir: str = ".") -> Iterator[str]:

for dirpath, dirnames, filenames in os.walk(top_dir):

dirnames[:] = [d for d in dirnames if d[0] not in "._"]

for filename in filenames:

if os.path.splitext(filename)[1].lower() == ".java":

yield os.path.join(dirpath, filename).lstrip("./")

def md_prefix(i):

return f"{i * ' '}*" if i else "\n##"

def print_path(old_path: str, new_path: str) -> str:

global g_output

old_parts = old_path.split(os.sep)

for i, new_part in enumerate(new_path.split(os.sep)):

if i + 1 > len(old_parts) or old_parts[i] != new_part:

if new_part:

g_output.append(f"{md_prefix(i)} {new_part.replace('_', ' ')}")

return new_path

def build_directory_md(top_dir: str = ".") -> str:

global g_output

old_path = ""

for filepath in sorted(good_filepaths(), key=str.lower):

filepath, filename = os.path.split(filepath)

if filepath != old_path:

old_path = print_path(old_path, filepath)

indent = (filepath.count(os.sep) + 1) if filepath else 0

url = "/".join((URL_BASE, filepath, filename)).replace(" ", "%20")

filename = os.path.splitext(filename.replace("_", " "))[0]

g_output.append(f"{md_prefix(indent)} [{filename}]({url})")

return "\n".join(g_output)

with open("DIRECTORY.md", "w") as out_file:

out_file.write(build_directory_md(".") + "\n")

- name: Update DIRECTORY.md

run: |

cat DIRECTORY.md

git config --global user.name github-actions

git config --global user.email '${GITHUB_ACTOR}@users.noreply.github.com'

git remote set-url origin https://x-access-token:${{ secrets.GITHUB_TOKEN }}@github.com/$GITHUB_REPOSITORY

git add DIRECTORY.md

git commit -am "updating DIRECTORY.md" || true

git push --force origin HEAD:$GITHUB_REF || true