From 08f8e3b4a4879dd7c91c16fbce80c4f2bc5e357f Mon Sep 17 00:00:00 2001
From: Jacky Zhao <j.zhao2k19@gmail.com>
Date: Mon, 10 Jul 2023 02:32:24 +0000
Subject: [PATCH] docs + various polish

---
 quartz/path.ts |   67 ++++++++++++++++++++++++++++-----
 1 files changed, 57 insertions(+), 10 deletions(-)

diff --git a/quartz/path.ts b/quartz/path.ts
index ddad387..0332584 100644
--- a/quartz/path.ts
+++ b/quartz/path.ts
@@ -1,19 +1,66 @@
 import path from 'path'
+import { slug as slugAnchor } from 'github-slugger'
 
-// Replaces all whitespace with dashes and URI encodes the rest
-export function pathToSlug(fp: string): string {
-  const { dir, name } = path.parse(fp)
-  let slug = path.join('/', dir, name)
-  slug = slug.replace(/\s/g, '-')
-  return slug
+function slugSegment(s: string): string {
+  return s.replace(/\s/g, '-')
+}
+
+// on the client, 'index' isn't ever rendered so we should clean it up
+export function clientSideSlug(fp: string): string {
+  // remove index
+  if (fp.endsWith("index")) {
+    fp = fp.slice(0, -"index".length)
+  }
+
+  // remove trailing slash
+  if (fp.endsWith("/")) {
+    fp = fp.slice(0, -1)
+  }
+
+  return fp
+}
+
+export function trimPathSuffix(fp: string): string {
+  fp = clientSideSlug(fp)
+  let [cleanPath, anchor] = fp.split("#", 2)
+  anchor = anchor === undefined ? "" : "#" + anchor
+
+  return cleanPath + anchor
+}
+
+export function slugify(s: string): string {
+  let [fp, anchor] = s.split("#", 2)
+  const sluggedAnchor = anchor === undefined ? "" : "#" + slugAnchor(anchor)
+  const withoutFileExt = fp.replace(new RegExp(path.extname(fp) + '$'), '')
+  const rawSlugSegments = withoutFileExt.split(path.sep)
+  const slugParts: string = rawSlugSegments
+    .map((segment) => slugSegment(segment))
+    .join(path.posix.sep)
+    .replace(/\/$/, '')
+  return path.normalize(slugParts) + sluggedAnchor
 }
 
 // resolve /a/b/c to ../../
 export function resolveToRoot(slug: string): string {
-  let fp = slug
-  if (fp.endsWith("/index")) {
-    fp = fp.slice(0, -"/index".length)
+  let fp = trimPathSuffix(slug)
+
+  if (fp === "") {
+    return "."
   }
 
-  return "./" + path.relative(fp, path.posix.sep)
+  return "./" + fp
+    .split('/')
+    .filter(x => x !== '')
+    .map(_ => '..')
+    .join('/')
 }
+
+export function relativeToRoot(slug: string, fp: string): string {
+  return path.join(resolveToRoot(slug), fp)
+}
+
+export function relative(src: string, dest: string): string {
+  return path.relative(src, dest)
+}
+
+export const QUARTZ = "quartz"

--
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