[FIX] doc: fix all dead links

closes #149

doc/animations.md

@@ -38,7 +38,8 @@ keyboard) the button.
 A more complex situation occurs when we want to transition an element in or out
 of the page. For example, we may want a fade-in and fade-out effect.
 
-The `t-transition` directive is here to help us (see [QWeb documentation](qweb.md#t-transition-directive)).
+The `t-transition` directive is here to help us. It works on html elements and
+on components, by adding and removing some css classes.
 
 To perform useful transition effects, whenever an element appears or disappears,
 it is necessary to add/remove some css style or class at some precise moment in

doc/component.md

@@ -14,7 +14,7 @@
   - [`t-key` directive](#t-key-directive)
   - [`t-mounted` directive](#t-mounted-directive)
   - [Props Validation](#props-validation)
-  - [Keeping References](#keeping-references])
+  - [Keeping References](#keeping-references)
   - [Asynchronous rendering](#asynchronous-rendering)
 
 ## Overview
@@ -160,13 +160,13 @@ a owl component:
 
 | Method                                           | Description                                           |
 | ------------------------------------------------ | ----------------------------------------------------- |
-| **[constructor](#constructor)**                  | constructor                                           |
+| **[constructor](#constructorparent-props)**      | constructor                                           |
-| **[willStart](#willStart)**                      | async, before first rendering                         |
+| **[willStart](#willstart)**                      | async, before first rendering                         |
 | **[mounted](#mounted)**                          | just after component is rendered and added to the DOM |
 | **[willUpdateProps](#willupdatepropsnextprops)** | async, before props update                            |
 | **[willPatch](#willpatch)**                      | just before the DOM is patched                        |
 | **[patched](#patchedsnapshot)**                  | just after the DOM is patched                         |
-| **[willUnmount](#willUnmount)**                  | just before removing component from DOM               |
+| **[willUnmount](#willunmount)**                  | just before removing component from DOM               |
 
 Notes:
 
@@ -370,7 +370,7 @@ Note that there are some restrictions on prop names: `class`, `style` and any
 string which starts with `t-` are not allowed.
 
 The `t-widget` directive also accepts dynamic values with string interpolation
-(like the [`t-attf-`](#dynamic-attributes-t-att-and-t-attf-directives) directive):
+(like the [`t-attf-`](qweb.md#dynamic-attributes) directive):
 
 ```xml
 <div t-name="ParentWidget">
@@ -736,8 +736,8 @@ Note: if used on a component, the reference will be set in the `refs`
 variable between `willPatch` and `patched`.
 
 The `t-ref` directive also accepts dynamic values with string interpolation
-(like the [`t-attf-`](#dynamic-attributes-t-att-and-t-attf-directives) and
+(like the [`t-attf-`](qweb.md#dynamic-attributes) and
-[`t-widget-`](#component-t-widget) directives). For example, if we have
+`t-widget` directives). For example, if we have
 `id` set to 44 in the rendering context,
 
 ```xml

doc/qweb.md

@@ -5,7 +5,7 @@
 - [Overview](#overview)
 - [Directives](#directives)
 - [QWeb Engine](#qweb-engine)
-- [Reference](#qweb-specification)
+- [Reference](#reference)
   - [White spaces](#white-spaces)
   - [Root nodes](#root-nodes)
   - [Expression evaluation](#expression-evaluation)
@@ -72,7 +72,7 @@ needs. Here is a list of all Owl specific directives:
 | `t-key`                   | [Defining a key (to help virtual dom reconciliation)](component.md#t-key-directive)     |
 | `t-on-*`                  | [Event handling](component.md#event-handling)                                           |
 | `t-transition`            | [Defining an animation](animations.md#css-transitions)                                  |
-| `t-mounted`               | [Callback when a node or component is mounted](#component.md#t-mounted-directive)       |
+| `t-mounted`               | [Callback when a node or component is mounted](component.md#t-mounted-directive)        |
 
 ## QWeb Engine
 

tests/doc_link_checker.test.ts

@@ -0,0 +1,121 @@
+/**
+ * Doc Link Checker
+ *
+ * We define here a test to make sure that there are no dead link in the Owl
+ * documentation.
+ */
+import * as fs from "fs";
+
+const LINK_REGEXP = /\[([^\[]+)\]\(([^\)]+)\)/g;
+const HEADING_REGEXP = /\n(#+\s*)(.*)/g;
+
+test("All markdown links work", () => {
+  let linkNumber = 0;
+  let invalidLinkNumber = 0;
+  const data = readDocData();
+  for (let file of data) {
+    for (let link of file.links) {
+      // DEBUG: uncomment next line
+      // console.warn(`Checking "${link.name}" in "${file.name}"`);
+      linkNumber++;
+      if (!isLinkValid(link, file, data)) {
+        console.warn(`Invalid Link: "${link.name}" in "${file.name}"`);
+        invalidLinkNumber++;
+      }
+    }
+  }
+  expect(invalidLinkNumber).toBe(0);
+  expect(linkNumber).toBeGreaterThan(10);
+});
+
+interface MarkDownLink {
+  name: string;
+  link: string;
+}
+
+interface MarkDownSection {
+  name: string;
+  slug: string;
+}
+
+interface FileData {
+  name: string;
+  links: MarkDownLink[];
+  sections: MarkDownSection[];
+}
+
+function isLinkValid(
+  link: MarkDownLink,
+  current: FileData,
+  files: FileData[]
+): boolean {
+  const parts = link.link.split("#");
+  if (parts.length === 1) {
+    // no # in url
+    if (parts[0].endsWith(".md")) {
+      // it is a local md file
+      if (!files.find(f => f.name === parts[0])) {
+        return false;
+      }
+    }
+  } else {
+    const file =
+      parts[0] === "" ? current : files.find(f => f.name === parts[0]);
+    if (!file) {
+      return false;
+    }
+    if (!file.sections.find(s => s.slug === parts[1])) {
+      return false;
+    }
+  }
+  return true;
+}
+// adapted from https://medium.com/@mhagemann/the-ultimate-way-to-slugify-a-url-string-in-javascript-b8e4a0d849e1
+function slugify(str) {
+  const a = "àáäâãåăæçèéëêǵḧìíïîḿńǹñòóöôœøṕŕßśșțùúüûǘẃẍÿź·_,:;";
+  const b = "aaaaaaaaceeeeghiiiimnnnooooooprssstuuuuuwxyz-----";
+  const p = new RegExp(a.split("").join("|"), "g");
+  return str
+    .toString()
+    .toLowerCase()
+    .replace(/\//g, "") // remove /
+    .replace(/\s+/g, "-") // Replace spaces with -
+    .replace(p, c => b.charAt(a.indexOf(c))) // Replace special characters
+    .replace(/&/g, "-and-") // Replace & with ‘and’
+    .replace(/[^\w\-]+/g, "") // Remove all non-word characters
+    .replace(/\-\-+/g, "-") // Replace multiple - with single -
+    .replace(/^-+/, "") // Trim - from start of text
+    .replace(/-+$/, ""); // Trim - from end of text
+}
+
+function readDocData(): FileData[] {
+  const result: FileData[] = [];
+  const FILES = fs.readdirSync("doc");
+
+  for (let file of FILES) {
+    const fileData: FileData = {
+      name: file,
+      links: [],
+      sections: []
+    };
+    const content = fs.readFileSync(`doc/${file}`, { encoding: "utf8" });
+    let m;
+    // get links info
+    do {
+      m = LINK_REGEXP.exec(content);
+      if (m) {
+        fileData.links.push({ name: m[0], link: m[2] });
+      }
+    } while (m);
+    // get sections info
+    do {
+      m = HEADING_REGEXP.exec(content);
+      if (m) {
+        fileData.sections.push({ name: m[0], slug: slugify(m[2]) });
+      }
+    } while (m);
+
+    result.push(fileData);
+  }
+  return result;
+}