/*
* Copyright 2019-2024 Soren Stoutner <soren@stoutner.com>.
*
- * This file is part of Privacy Browser Android <https://www.stoutner.com/privacy-browser-android>.
+ * This file is part of Privacy Browser Android <https://www.stoutner.com/privacy-browser-android/>.
*
* Privacy Browser Android is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
import android.os.Build
import android.os.Bundle
import android.provider.OpenableColumns
+import android.util.Base64
import android.util.TypedValue
import android.view.Menu
import android.view.MenuItem
import android.view.WindowManager
-import android.widget.TextView
-import android.widget.ScrollView
+import android.webkit.WebView
import androidx.activity.result.contract.ActivityResultContracts
import androidx.appcompat.app.AppCompatActivity
import java.io.BufferedReader
import java.io.IOException
import java.io.InputStreamReader
-import java.lang.Exception
+
import java.nio.charset.StandardCharsets
// Define the class constants.
-private const val SCROLLVIEW_POSITION = "scrollview_position"
+private const val SCROLL_Y = "A"
class LogcatActivity : AppCompatActivity() {
- // Define the class variables.
- private var scrollViewYPositionInt = 0
+ // Declare the class variables.
+ private lateinit var logcatPlainTextStringBuilder: StringBuilder
- // Define the class views.
+ // Declare the class views.
private lateinit var swipeRefreshLayout: SwipeRefreshLayout
- private lateinit var logcatScrollView: ScrollView
- private lateinit var logcatTextView: TextView
+ private lateinit var logcatWebView: WebView
// Define the save logcat activity result launcher. It must be defined before `onCreate()` is run or the app will crash.
private val saveLogcatActivityResultLauncher = registerForActivityResult(ActivityResultContracts.CreateDocument("text/plain")) { fileUri ->
// Only save the file if the URI is not null, which happens if the user exited the file picker by pressing back.
if (fileUri != null) {
try {
- // Get the logcat string.
- val logcatString = logcatTextView.text.toString()
-
// Open an output stream.
val outputStream = contentResolver.openOutputStream(fileUri)!!
CoroutineScope(Dispatchers.Main).launch {
withContext(Dispatchers.IO) {
// Write the logcat string to the output stream.
- outputStream.write(logcatString.toByteArray(StandardCharsets.UTF_8))
+ outputStream.write(logcatPlainTextStringBuilder.toString().toByteArray(StandardCharsets.UTF_8))
// Close the output stream.
outputStream.close()
contentResolverCursor.close()
// Display a snackbar with the saved logcat information.
- Snackbar.make(logcatTextView, getString(R.string.saved, fileNameString), Snackbar.LENGTH_SHORT).show()
+ Snackbar.make(logcatWebView, getString(R.string.saved, fileNameString), Snackbar.LENGTH_SHORT).show()
} catch (exception: Exception) {
// Display a snackbar with the error message.
- Snackbar.make(logcatTextView, getString(R.string.error_saving_logcat, exception.toString()), Snackbar.LENGTH_INDEFINITE).show()
+ Snackbar.make(logcatWebView, getString(R.string.error_saving_logcat, exception.toString()), Snackbar.LENGTH_INDEFINITE).show()
}
}
}
val bottomAppBar = sharedPreferences.getBoolean(getString(R.string.bottom_app_bar_key), false)
// Disable screenshots if not allowed.
- if (!allowScreenshots) {
+ if (!allowScreenshots)
window.addFlags(WindowManager.LayoutParams.FLAG_SECURE)
- }
// Run the default commands.
super.onCreate(savedInstanceState)
// Set the content view.
- if (bottomAppBar) {
+ if (bottomAppBar)
setContentView(R.layout.logcat_bottom_appbar)
- } else {
+ else
setContentView(R.layout.logcat_top_appbar)
- }
// Get handles for the views.
val toolbar = findViewById<Toolbar>(R.id.toolbar)
swipeRefreshLayout = findViewById(R.id.swiperefreshlayout)
- logcatScrollView = findViewById(R.id.scrollview)
- logcatTextView = findViewById(R.id.logcat_textview)
+ logcatWebView = findViewById(R.id.logcat_webview)
// Set the toolbar as the action bar.
setSupportActionBar(toolbar)
// Implement swipe to refresh.
swipeRefreshLayout.setOnRefreshListener {
- // Get the current logcat.
- getLogcat()
+ // Populate the current logcat.
+ populateLogcat()
}
// Set the swipe refresh color scheme according to the theme.
// Set the swipe refresh background color.
swipeRefreshLayout.setProgressBackgroundColorSchemeColor(colorBackgroundInt)
- // Check to see if the activity has been restarted.
- if (savedInstanceState != null) {
- // Get the saved scrollview position.
- scrollViewYPositionInt = savedInstanceState.getInt(SCROLLVIEW_POSITION)
- }
+ // Restore the WebView scroll position if the activity has been restarted.
+ if (savedInstanceState != null)
+ logcatWebView.scrollY = savedInstanceState.getInt(SCROLL_Y)
+
+ // Allow loading of file:// URLs.
+ logcatWebView.settings.allowFileAccess = true
- // Get the logcat.
- getLogcat()
+ // Populate the logcat.
+ populateLogcat()
}
override fun onCreateOptionsMenu(menu: Menu): Boolean {
val clipboardManager = getSystemService(CLIPBOARD_SERVICE) as ClipboardManager
// Save the logcat in a clip data.
- val logcatClipData = ClipData.newPlainText(getString(R.string.logcat), logcatTextView.text)
+ val logcatClipData = ClipData.newPlainText(getString(R.string.logcat), logcatPlainTextStringBuilder)
// Place the clip data on the clipboard.
clipboardManager.setPrimaryClip(logcatClipData)
// Display a snackbar if the API <= 32 (Android 12L). Beginning in Android 13 the OS displays a notification that covers up the snackbar.
if (Build.VERSION.SDK_INT <= 32)
- Snackbar.make(logcatTextView, R.string.logcat_copied, Snackbar.LENGTH_SHORT).show()
+ Snackbar.make(logcatWebView, R.string.logcat_copied, Snackbar.LENGTH_SHORT).show()
// Consume the event.
true
// Wait for the process to finish.
process.waitFor()
- // Reset the scroll view Y position int.
- scrollViewYPositionInt = 0
-
// Reload the logcat.
- getLogcat()
+ populateLogcat()
} catch (exception: Exception) {
// Do nothing.
}
// Run the default commands.
super.onSaveInstanceState(savedInstanceState)
- // Get the scrollview Y position.
- val scrollViewYPositionInt = logcatScrollView.scrollY
-
- // Store the scrollview Y position in the bundle.
- savedInstanceState.putInt(SCROLLVIEW_POSITION, scrollViewYPositionInt)
+ // Store the scroll Y position in the bundle.
+ savedInstanceState.putInt(SCROLL_Y, logcatWebView.scrollY)
}
- private fun getLogcat() {
+ private fun populateLogcat() {
try {
// Get the logcat. `-b all` gets all the buffers (instead of just crash, main, and system). `-v long` produces more complete information. `-d` dumps the logcat and exits.
val getLogcatProcess = Runtime.getRuntime().exec("logcat -b all -v long -d")
// Wrap the logcat in a buffered reader.
val logcatBufferedReader = BufferedReader(InputStreamReader(getLogcatProcess.inputStream))
- // Display the logcat.
- logcatTextView.text = logcatBufferedReader.readText()
+ // Reset the logcat plain text string.
+ logcatPlainTextStringBuilder = StringBuilder()
+
+ // Create a logcat HTML string builder.
+ val logcatHtmlStringBuilder = StringBuilder()
+
+ // Populate the initial HTML.
+ logcatHtmlStringBuilder.append("<html>")
+ logcatHtmlStringBuilder.append("<head>")
+ logcatHtmlStringBuilder.append("<style>")
+
+ // Set the word break so that lines never exceed the width of the screen.
+ logcatHtmlStringBuilder.append("body { word-break: break-word; }")
+
+ // Set the colors.
+ logcatHtmlStringBuilder.append("@media (prefers-color-scheme: dark) { body { color: #C1C1C1; /* Gray 350 */ background-color: #303030; /* Gray 860 */ } }")
+ logcatHtmlStringBuilder.append("span.header { color: #0D47A1; /* Blue 900 */ } @media (prefers-color-scheme: dark) { span.header { color: #8AB4F8; /* Violet 500 */ } }")
+ logcatHtmlStringBuilder.append("strong.crash { color: #B71C1C; /* Red 900. */ } @media (prefers-color-scheme: dark) { strong.crash { color: #E24B4C; /* Red Night. */ } }")
+ logcatHtmlStringBuilder.append("span.crash { color: #EF5350; /* Red 400. */ } @media (prefers-color-scheme: dark) { span.crash { color: #EF9A9A; /* Red Night. */ } }")
+
+ // Close the style tag.
+ logcatHtmlStringBuilder.append("</style>")
+
+ // Respect dark mode.
+ logcatHtmlStringBuilder.append("<meta name=\"color-scheme\" content=\"light dark\">")
+
+ // Start the HTML body.
+ logcatHtmlStringBuilder.append("</head>")
+ logcatHtmlStringBuilder.append("<body>")
+
+ // Create a logcat line string.
+ var logcatLineString: String?
+
+ while (logcatBufferedReader.readLine().also { logcatLineString = it } != null) {
+ // Populate the logcat plain text string builder.
+ logcatPlainTextStringBuilder.append(logcatLineString)
+
+ // Add a line break.
+ logcatPlainTextStringBuilder.append("\n")
+
+ // Trim the string, which is necessary for correct detection of lines that start with `at`.
+ logcatLineString = logcatLineString!!.trim()
+
+ // Apply syntax highlighting to the logcat.
+ if (logcatLineString!!.contains("crash") || logcatLineString!!.contains("Exception") ) { // Colorize crashes.
+ logcatHtmlStringBuilder.append("<strong class=\"crash\">")
+ logcatHtmlStringBuilder.append(logcatLineString)
+ logcatHtmlStringBuilder.append("</strong>")
+ } else if (logcatLineString!!.startsWith("at") || logcatLineString!!.startsWith("Process:") || logcatLineString!!.contains("FATAL")) { // Colorize lines relating to crashes.
+ logcatHtmlStringBuilder.append("<span class=\"crash\">")
+ logcatHtmlStringBuilder.append(logcatLineString)
+ logcatHtmlStringBuilder.append("</span>")
+ } else if (logcatLineString!!.startsWith("-")) { // Colorize the headers.
+ logcatHtmlStringBuilder.append("<span class=\"header\">")
+ logcatHtmlStringBuilder.append(logcatLineString)
+ logcatHtmlStringBuilder.append("</span>")
+ } else if (logcatLineString!!.startsWith("[ ")) { // Colorize the time stamps.
+ logcatHtmlStringBuilder.append("<span style=color:gray>")
+ logcatHtmlStringBuilder.append(logcatLineString)
+ logcatHtmlStringBuilder.append("</span>")
+ } else { // Display the standard lines.
+ logcatHtmlStringBuilder.append(logcatLineString)
+ }
+
+ // Add a line break.
+ logcatHtmlStringBuilder.append("<br>")
+ }
+
+ // Close the HTML.
+ logcatHtmlStringBuilder.append("</body>")
+ logcatHtmlStringBuilder.append("</html>")
+
+ // Encode the logcat HTML.
+ val base64EncodedLogcatHtml: String = Base64.encodeToString(logcatHtmlStringBuilder.toString().toByteArray(Charsets.UTF_8), Base64.NO_PADDING)
+
+ // Load the encoded logcat.
+ logcatWebView.loadData(base64EncodedLogcatHtml, "text/html", "base64")
// Close the buffered reader.
logcatBufferedReader.close()
// Do nothing.
}
- // Update the scroll position after the text is populated.
- logcatTextView.post {
- // Set the scroll position.
- logcatScrollView.scrollY = scrollViewYPositionInt
- }
-
// Stop the swipe to refresh animation if it is displayed.
swipeRefreshLayout.isRefreshing = false
}
projects / PrivacyBrowserAndroid.git / blobdiff