From 9fb2eb2d2b3816e45a3d0a44d0b19bec9ec52af7 Mon Sep 17 00:00:00 2001
From: Damir Rakhimulin <46053683+dionep@users.noreply.github.com>
Date: Thu, 7 Oct 2021 21:23:07 +0300
Subject: [PATCH] Add visual support for links after scanning

---
 .../binaryeye/fragment/DecodeFragment.kt      |  9 ++++++
 .../android/binaryeye/link_utils/getLinks.kt  | 29 +++++++++++++++++++
 app/src/main/res/layout/fragment_decode.xml   | 25 ++++++++++++----
 3 files changed, 57 insertions(+), 6 deletions(-)
 create mode 100644 app/src/main/kotlin/de/markusfisch/android/binaryeye/link_utils/getLinks.kt

diff --git a/app/src/main/kotlin/de/markusfisch/android/binaryeye/fragment/DecodeFragment.kt b/app/src/main/kotlin/de/markusfisch/android/binaryeye/fragment/DecodeFragment.kt
index 50abb683..1f44db23 100644
--- a/app/src/main/kotlin/de/markusfisch/android/binaryeye/fragment/DecodeFragment.kt
+++ b/app/src/main/kotlin/de/markusfisch/android/binaryeye/fragment/DecodeFragment.kt
@@ -6,6 +6,7 @@ import android.support.design.widget.FloatingActionButton
 import android.support.v4.app.Fragment
 import android.text.Editable
 import android.text.TextWatcher
+import android.text.method.LinkMovementMethod
 import android.view.*
 import android.widget.EditText
 import android.widget.TableLayout
@@ -24,6 +25,7 @@ import de.markusfisch.android.binaryeye.database.Scan
 import de.markusfisch.android.binaryeye.io.askForFileName
 import de.markusfisch.android.binaryeye.io.toSaveResult
 import de.markusfisch.android.binaryeye.io.writeExternalFile
+import de.markusfisch.android.binaryeye.link_utils.getLinks
 import de.markusfisch.android.binaryeye.view.setPaddingFromWindowInsets
 import de.markusfisch.android.binaryeye.widget.toast
 import kotlinx.coroutines.CoroutineScope
@@ -32,11 +34,13 @@ import kotlinx.coroutines.Job
 import kotlinx.coroutines.launch
 
 class DecodeFragment : Fragment() {
+
 	private lateinit var contentView: EditText
 	private lateinit var formatView: TextView
 	private lateinit var dataView: TableLayout
 	private lateinit var metaView: TableLayout
 	private lateinit var hexView: TextView
+	private lateinit var linksView: TextView
 	private lateinit var format: String
 	private lateinit var fab: FloatingActionButton
 
@@ -84,6 +88,7 @@ class DecodeFragment : Fragment() {
 		format = scan.format
 
 		contentView = view.findViewById(R.id.content)
+		linksView = view.findViewById(R.id.links)
 		fab = view.findViewById(R.id.open)
 
 		if (!isBinary) {
@@ -115,6 +120,10 @@ class DecodeFragment : Fragment() {
 			if (prefs.openImmediately) {
 				executeAction(content.toByteArray())
 			}
+
+			linksView.text = getLinks(inputContent).joinToString("\n")
+			linksView.movementMethod = LinkMovementMethod.getInstance()
+
 		} else {
 			contentView.setText(R.string.binary_data)
 			contentView.isEnabled = false
diff --git a/app/src/main/kotlin/de/markusfisch/android/binaryeye/link_utils/getLinks.kt b/app/src/main/kotlin/de/markusfisch/android/binaryeye/link_utils/getLinks.kt
new file mode 100644
index 00000000..bcb058cf
--- /dev/null
+++ b/app/src/main/kotlin/de/markusfisch/android/binaryeye/link_utils/getLinks.kt
@@ -0,0 +1,29 @@
+package de.markusfisch.android.binaryeye.link_utils
+
+import java.util.regex.Pattern
+
+private val urlPattern: Pattern = Pattern.compile(
+    "(?:^|[\\W])((ht|f)tp(s?):\\/\\/|www\\.)" +
+            "(([\\w\\-]+\\.){1,}?([\\w\\-.~]+\\/?)*" +
+            "[\\p{Alnum}.,%_=?&#\\-+()\\[\\]\\*$~@!:/{};']*)",
+    Pattern.CASE_INSENSITIVE or Pattern.MULTILINE or Pattern.DOTALL
+)
+
+fun getLinks(text: String): List<String> {
+    val matcher = urlPattern.matcher(text)
+
+    val urls = mutableListOf<String>()
+
+    while (matcher.find()) {
+        val matchStart = matcher.start(1)
+        val matchEnd = matcher.end()
+
+        var url = text.substring(matchStart, matchEnd)
+        if (!url.startsWith("http://") && !url.startsWith("https://"))
+            url = "https://$url"
+
+        urls.add(url)
+    }
+
+    return urls
+}
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_decode.xml b/app/src/main/res/layout/fragment_decode.xml
index 1e345b1a..d42373db 100644
--- a/app/src/main/res/layout/fragment_decode.xml
+++ b/app/src/main/res/layout/fragment_decode.xml
@@ -51,10 +51,10 @@
 				android:layout_width="match_parent"
 				android:layout_height="wrap_content"
 				android:layout_below="@+id/data"
-				android:layout_marginEnd="16dp"
 				android:layout_marginStart="16dp"
 				android:layout_marginLeft="16dp"
-				android:layout_marginRight="16dp"/>
+				android:layout_marginEnd="16dp"
+				android:layout_marginRight="16dp" />
 			<TextView
 				android:id="@+id/hex"
 				android:layout_width="match_parent"
@@ -65,9 +65,22 @@
 				android:layout_marginEnd="16dp"
 				android:layout_marginRight="16dp"
 				android:layout_marginBottom="16dp"
-				android:typeface="monospace"
 				android:textSize="12sp"
-				tools:text="54 65 73 74 20 51 52 20  Test QR\n43 6F 64 65              Code"/>
+				android:typeface="monospace"
+				tools:text="54 65 73 74 20 51 52 20  Test QR\n43 6F 64 65              Code" />
+
+			<TextView
+				android:id="@+id/links"
+				android:autoLink="web"
+				android:lineHeight="24sp"
+				android:layout_width="wrap_content"
+				android:layout_height="wrap_content"
+				android:layout_below="@id/hex"
+				android:layout_marginHorizontal="16dp"
+				android:textSize="12sp"
+				android:typeface="monospace"
+				tools:text="@tools:sample/lorem/random" />
+
 		</RelativeLayout>
 	</de.markusfisch.android.binaryeye.widget.ConfinedScrollView>
 	<android.support.design.widget.CoordinatorLayout
@@ -75,9 +88,9 @@
 		android:layout_width="match_parent"
 		android:layout_height="match_parent">
 		<android.support.design.widget.FloatingActionButton
-			style="@style/FAB"
 			android:id="@+id/open"
+			style="@style/FAB"
 			android:contentDescription="@string/open_url"
-			android:src="@drawable/ic_action_open"/>
+			android:src="@drawable/ic_action_open" />
 	</android.support.design.widget.CoordinatorLayout>
 </FrameLayout>