Initial commit

2023-02-17 06:39:02 +01:00 · 2023-02-17 06:39:02 +01:00 · 606bb97714
commit 606bb97714
5 changed files with 963 additions and 0 deletions
--- a/.gitignore
+++ b/.gitignore
@ -0,0 +1 @@
+node_modules
--- a/README.md
+++ b/README.md
@ -0,0 +1,88 @@
+# Locator
+
+_Helps locating elements in simple HTML pages_
+
+## Installation
+
+Either install it globally:
+
+```sh
+npm install --global git://gitea.tforgione.fr/tforgione/locator
+```
+
+or simply clone the repo:
+
+```sh
+git clone https://gitea.tforgione.fr/tforgione/locator
+cd locator
+npm install
+```
+
+## Usage
+
+If you installed globally:
+
+```sh
+locator <path-to-the-HTML-file>
+```
+
+If you installed locally, in the directory where the `index.js` file is:
+
+```sh
+node index.js <path-to-the-HTML-file>
+```
+
+## Example
+
+```sh
+locator 10.html
+```
+
+Output:
+
+```json
+[
+    {
+        "x": 0.0546875,
+        "y": 0.09722222222222222,
+        "width": 0.890625,
+        "height": 0.11812065972222222,
+        "type": "h1"
+    },
+    {
+        "x": 0.0546875,
+        "y": 0.26395399305555556,
+        "width": 0.890625,
+        "height": 0.065625,
+        "type": "p"
+    },
+    {
+        "x": 0.0546875,
+        "y": 0.37819010416666665,
+        "width": 0.890625,
+        "height": 0.22604166666666667,
+        "type": "ul"
+    },
+    {
+        "x": 0.0859375,
+        "y": 0.37819010416666665,
+        "width": 0.859375,
+        "height": 0.065625,
+        "type": "li"
+    },
+    {
+        "x": 0.0859375,
+        "y": 0.4583984375,
+        "width": 0.859375,
+        "height": 0.065625,
+        "type": "li"
+    },
+    {
+        "x": 0.0859375,
+        "y": 0.5386067708333333,
+        "width": 0.859375,
+        "height": 0.065625,
+        "type": "li"
+    }
+]
+```
--- a/index.js
+++ b/index.js
@ -0,0 +1,78 @@
+const fs = require('fs').promises;
+const process = require('process');
+const puppeteer = require('puppeteer');
+
+async function main() {
+
+    // Path to the HTML file to analyse (given as relative path from current directory)
+    // We need the full path so that puppeteer is able to access it
+    const path = process.argv[2].startsWith('/') ? process.argv[2] : process.cwd() + '/' + process.argv[2];
+
+    // Check that the file exists
+    try {
+        await fs.access(path, fs.constants.F_OK);
+    } catch (e) {
+        console.error("No such file: " + path);
+        process.exit(1);
+    }
+
+    // Size of the rendering of the web page
+    const size = { width: 1280, height: 720 };
+
+    // Initialize browser
+    const browser = await puppeteer.launch();
+    const page = await browser.newPage();
+    await page.setViewport(size);
+    await page.goto("file://" + path);
+
+    // This will contain all the collected information
+    let info = [];
+
+    for (let selector of ["h1", "h2", "h3", "h4", "h5", "h6", "a", "img", "p", "ul", "ol", "li"]) {
+
+        let query = selector;
+        if (query === "p") {
+            // Skip paragraphs that have children (which means that they are not text paragraphs)
+            query += ":not(:has(*))";
+        }
+
+        // Query the considered element
+        let elements = await page.$$(query);
+
+        for (let element of elements) {
+            let box = await element.boundingBox();
+
+            // Scale the bounding box
+            box.x /= size.width;
+            box.width /= size.width;
+            box.y /= size.height;
+            box.height /= size.height;
+
+            // Give the selector as type
+            box.type = selector;
+
+            info.push(box);
+        }
+
+    }
+
+    // Sort the info by y and the x (top to bottom, then left to right)
+    info.sort((a, b) => {
+        if (a.y < b.y || (a.y == b.y && a.x < b.x)) {
+            return -1;
+        }
+
+        if (a.y > b.y || (a.y == b.y && a.x > b.x)) {
+            return 1;
+        }
+
+        return 0;
+    });
+
+    // Pretty print the output info
+    console.log(JSON.stringify(info, undefined, 4));
+
+    await browser.close();
+}
+
+main();
--- a/package-lock.json
+++ b/package-lock.json
@ -0,0 +1,782 @@
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+  "name": "locator",
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+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ=="
+    },
+    "node_modules/ws": {
+      "version": "8.11.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.11.0.tgz",
+      "integrity": "sha512-HPG3wQd9sNQoT9xHyNCXoDUa+Xw/VevmY9FoHyQ+g+rrMn4j6FB4np7Z0OhdTgjx6MgQLK7jwSy1YecU1+4Asg==",
+      "engines": {
+        "node": ">=10.0.0"
+      },
+      "peerDependencies": {
+        "bufferutil": "^4.0.1",
+        "utf-8-validate": "^5.0.2"
+      },
+      "peerDependenciesMeta": {
+        "bufferutil": {
+          "optional": true
+        },
+        "utf-8-validate": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/yauzl": {
+      "version": "2.10.0",
+      "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.10.0.tgz",
+      "integrity": "sha512-p4a9I6X6nu6IhoGmBqAcbJy1mlC4j27vEPZX9F4L4/vZT3Lyq1VkFHw/V/PUcB9Buo+DG3iHkT0x3Qya58zc3g==",
+      "dependencies": {
+        "buffer-crc32": "~0.2.3",
+        "fd-slicer": "~1.1.0"
+      }
+    }
+  }
+}
--- a/package.json
+++ b/package.json
@ -0,0 +1,14 @@
+{
+  "name": "locator",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "puppeteer": "^19.7.1"
+  }
+}