René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Speedup `posixpath.abspath()` for relative paths","articleBody":"# Feature or enhancement\r\n\r\n### Proposal:\r\n\r\nWhen normalising a relative path, we don't need to process the cwd as it's already normalised, which could get expensive if it's long:\r\n\r\n```diff\r\n\u003c _Py_normpath_and_size(wchar_t *path, Py_ssize_t size, Py_ssize_t *normsize)\r\n---\r\n\u003e _Py_normpath_and_size(wchar_t *path, Py_ssize_t size, Py_ssize_t start, Py_ssize_t *normsize)\r\n2397a2398,2402\r\n\u003e         return path;\r\n\u003e     }\r\n\u003e     // Start beyond end of path\r\n\u003e     if (start \u003e= size) {\r\n\u003e         *normsize = size;\r\n2457a2463,2467\r\n\u003e     // Skip past cwd\r\n\u003e     if (path + start \u003e p1) {\r\n\u003e         p1 = p2 = path + start;\r\n\u003e         lastC = *(p1-1);\r\n\u003e     }\r\n2525c2535\r\n\u003c     return _Py_normpath_and_size(path, size, \u0026norm_length);\r\n---\r\n\u003e     return _Py_normpath_and_size(path, size, 0, \u0026norm_length);\r\n\r\n```\r\n\r\n### Has this already been discussed elsewhere?\r\n\r\nThis is a minor feature, which does not need previous discussion elsewhere\r\n\r\n### Links to previous discussion of this feature:\r\n\r\n_No response_\n\n\u003c!-- gh-linked-prs --\u003e\n### Linked PRs\n* gh-117855\n\u003c!-- /gh-linked-prs --\u003e\n","author":{"url":"https://github.com/nineteendo","@type":"Person","name":"nineteendo"},"datePublished":"2024-04-06T19:03:14.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":26},"url":"https://github.com/117587/cpython/issues/117587"}