add markdown links parsing

webpage/markdown.ts

@@ -428,6 +428,46 @@ class MarkDown{
                 }
             }
 
+            if (txt[i] == "[" && !keep) {
+                let partsFound=0;
+                let j=i+1;
+                const build=["["];
+                for (; txt[j] !== void 0; j++) {
+                    build.push(txt[j]);
+
+                    if (partsFound === 0 && txt[j] === "]") {
+                        if (txt[j + 1] === "(" &&
+                            txt[j + 2] === "h" && txt[j + 3] === "t" && txt[j + 4] === "t" && txt[j + 5] === "p" && (txt[j + 6] === "s" || txt[j + 6] === ":")
+                        ) {
+                            partsFound++;
+                        } else {
+                            break;
+                        };
+                    } else if (partsFound === 1 && txt[j] === ")") {
+                        partsFound++;
+                        break;
+                    }
+                }
+
+                if (partsFound === 2) {
+                    appendcurrent();
+                    i=j;
+
+                    const parts=build.join("").match(/^\[(.+)\]\((https?:.+?)( ('|").+('|"))?\)$/);
+                    if (parts) {
+                        const linkElem=document.createElement("a");
+                        linkElem.href=parts[2];
+                        linkElem.textContent=parts[1];
+                        linkElem.target="_blank";
+                        linkElem.rel="noopener noreferrer";
+                        linkElem.title=(parts[3] ? parts[3].substring(2, parts[3].length - 1)+"\n\n" : "") + parts[2];
+                        span.appendChild(linkElem);
+
+                        continue;
+                    }
+                }
+            }
+
             current.textContent+=txt[i];
         }
         appendcurrent();