Created
January 10, 2024 00:24
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Dependency graph sorter
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| from collections import defaultdict | |
| from itertools import chain | |
| class Graph: | |
| def __init__(self, vertices: list[str]): | |
| self._graph = defaultdict(list) | |
| self._V = vertices | |
| def add_edge(self, u: str, v: str): | |
| self._graph[u].append(v) | |
| def _sort(self, v: str, visited: dict[str, bool], stack: list[str]): | |
| visited[v] = True | |
| for i in self._graph[v]: | |
| if visited[i] == False: | |
| self._sort(i, visited, stack) | |
| stack.append(v) | |
| def sort(self): | |
| visited = {i: False for i in self._V} | |
| stack: list[str] = [] | |
| for i in self._V: | |
| if visited[i] == False: | |
| self._sort(i, visited, stack) | |
| return stack | |
| dependencies = { | |
| "apr-util": ["apr", "expat", "openldap", "openssl"], | |
| "cracklib": ["zlib"], | |
| "curl": ["nghttp2", "openldap", "openssl", "zlib"], | |
| "cyrus-sasl": ["openssl", "zlib"], | |
| "httpd": ["apr", "apr-util", "libxml2", "nghttp2", "openssl", "pcre", "zlib"], | |
| "libxslt": ["libxml2"], | |
| "mysql": ["cracklib", "openssl", "ncurses", "zlib"], | |
| "openldap": ["cyrus-sasl", "openssl"], | |
| "openssl": ["zlib"], | |
| "pcre": ["readline"], | |
| "perl": ["zlib"], | |
| "php": ["curl", "cyrus-sasl", "httpd", "icu", "libxml2", "libxslt", "mysql", "openldap", "openssl", "pcre", "zlib"], | |
| "python": ["expat", "libffi", "ncurses", "openssl", "readline", "zlib"], | |
| "readline": ["ncurses"], | |
| } | |
| packages = list(set(chain.from_iterable([[k] + v for k, v in dependencies.items()]))) | |
| # packages.sort() | |
| graph = Graph(packages) | |
| for key, values in dependencies.items(): | |
| for value in values: | |
| graph.add_edge(key, value) | |
| print(graph.sort()) |
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