Initial commit

2026-02-20 20:10:03 -05:00
commit 5cf4bafc88
6 changed files with 276 additions and 0 deletions
--- a/convert.html
+++ b/convert.html
@@ -0,0 +1,100 @@
+<!DOCTYPE html>
+<html>
+
+<head>
+    <!-- This should only be needed once in a rare while to convert data scraped from the Government of Canada website  -->
+    <script src="raw-scraped-data.js"></script>
+</head>
+
+<body>
+    <button id="download-button">Download</button>
+    <script>
+
+        let converted = [];
+
+        let min_freq = 9999999;
+        let max_freq = 0;
+
+        scrape_table(t1, 1);
+        scrape_table(t2, 1000);
+        scrape_table(t3, 1000000);
+
+        console.log(max_freq + "kHz");
+        console.log(max_freq / 1000 + "MHz");
+        console.log(max_freq / 1000000 + "GHz");
+
+
+
+        const downloadButton = document.getElementById('download-button');
+        downloadButton.addEventListener('click', function () {
+            // Example data: create a Blob from a string
+            const textContent = JSON.stringify(converted);
+            const blob = new Blob([textContent], { type: 'application/json' });
+
+            // 3. Create a temporary anchor (<a>) element
+            const link = document.createElement('a');
+
+            // 4. Generate a temporary URL for the blob
+            const url = URL.createObjectURL(blob);
+
+            // 5. Set the anchor's attributes for download
+            link.href = url;
+            link.download = 'data.json'; // Specify the default filename
+            link.style.display = 'none'; // Hide the element
+
+            // 6. Append the link to the document body, click it, and remove it
+            document.body.appendChild(link);
+            link.click(); // Programmatically trigger the download
+
+            // 7. Clean up by revoking the object URL and removing the link
+            document.body.removeChild(link);
+            URL.revokeObjectURL(url); // Free up memory
+        });
+
+
+        function scrape_table(tbl, freq_mult) {
+            for (let entry of tbl) {
+                let conv_entry = {};
+
+                let freqs = entry.f.split(" - ");
+                let low_freq = parseFloat(freqs[0].replaceAll(' ', '')) * freq_mult;
+                let hi_freq = parseFloat(freqs[1].replaceAll(' ', '')) * freq_mult;
+
+                min_freq = Math.min(min_freq, low_freq);
+                max_freq = Math.max(max_freq, hi_freq);
+
+                conv_entry.minf = low_freq;
+                conv_entry.maxf = hi_freq;
+
+                let regexp = /primary service\s(?<service>.+?)\send primary service/gm;
+
+                // TODO: secondary services are listed after the primary in non-caps,
+                // are not surrounded by delimiters like primary service
+                // seems a bit more annoying to match
+                let result;
+
+                let service_cats = {};
+                let services = [];
+
+                // execute the regexp multiple times until we exhaust it,
+                // creating a new service find each time
+                while ((result = regexp.exec(entry.d)) != null) {
+                    let service_name = result.groups["service"].replaceAll(' ', '_');
+
+                    if (service_cats[service_name] == null) {
+                        service_cats[service_name] = 0;
+                    }
+
+                    service_cats[service_name]++;
+                    services.push(result.groups["service"]);
+                }
+
+                conv_entry.primary = services;
+
+                converted.push(conv_entry);
+            }
+        }
+    </script>
+</body>
+
+</html>