Improve sending web link with Bluetooth (a545a18f) · Commits · e / os / android_packages_modules_Bluetooth

android/app/src/com/android/bluetooth/opp/BluetoothOppLauncherActivity.java

+101 −5

Original line number	Diff line number	Diff line
		@@ -51,6 +51,11 @@ import android.os.Bundle;
		import android.util.Log;
		import android.provider.Settings;

		import android.util.Patterns;
		import java.util.regex.Matcher;
		import java.util.regex.Pattern;
		import java.util.Locale;

		/**
		* This class is designed to act as the entry point of handling the share intent
		* via BT from other APPs. and also make "Bluetooth" available in sharing method
		@@ -61,6 +66,10 @@ public class BluetoothOppLauncherActivity extends Activity {
		private static final boolean D = Constants.DEBUG;
		private static final boolean V = Constants.VERBOSE;

		// Regex that matches characters that have special meaning in HTML. '<', '>', '&' and
		// multiple continuous spaces.
		private static final Pattern PLAIN_TEXT_TO_ESCAPE = Pattern.compile("[<>&]\| {2,}\|\r?\n");

		@Override
		public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		@@ -250,11 +259,58 @@ public class BluetoothOppLauncherActivity extends Activity {
		String fileName = getString(R.string.bluetooth_share_file_name) + ".html";
		context.deleteFile(fileName);

		String uri = shareContent.toString();
		String content = "<html><head><meta http-equiv=\"Content-Type\" content=\"text/html;"
		+ " charset=UTF-8\"/></head><body>" + "<a href=\"" + uri + "\">" + uri + "</a></p>"
		+ "</body></html>";
		byte[] byteBuff = content.getBytes();
		/*
		* Convert the plain text to HTML
		*/
		StringBuffer sb = new StringBuffer("<html><head><meta http-equiv=\"Content-Type\""
		+ " content=\"text/html; charset=UTF-8\"/></head><body>");
		// Escape any inadvertent HTML in the text message
		String text = escapeCharacterToDisplay(shareContent.toString());

		// Regex that matches Web URL protocol part as case insensitive.
		Pattern webUrlProtocol = Pattern.compile("(?i)(http\|https)://");

		Pattern pattern = Pattern.compile("("
		+ Patterns.WEB_URL.pattern() + ")\|("
		+ Patterns.EMAIL_ADDRESS.pattern() + ")\|("
		+ Patterns.PHONE.pattern() + ")");
		// Find any embedded URL's and linkify
		Matcher m = pattern.matcher(text);
		while (m.find()) {
		String matchStr = m.group();
		String link = null;

		// Find any embedded URL's and linkify
		if (Patterns.WEB_URL.matcher(matchStr).matches()) {
		Matcher proto = webUrlProtocol.matcher(matchStr);
		if (proto.find()) {
		// This is work around to force URL protocol part be lower case,
		// because WebView could follow only lower case protocol link.
		link = proto.group().toLowerCase(Locale.US) +
		matchStr.substring(proto.end());
		} else {
		// Patterns.WEB_URL matches URL without protocol part,
		// so added default protocol to link.
		link = "http://" + matchStr;
		}

		// Find any embedded email address
		} else if (Patterns.EMAIL_ADDRESS.matcher(matchStr).matches()) {
		link = "mailto:" + matchStr;

		// Find any embedded phone numbers and linkify
		} else if (Patterns.PHONE.matcher(matchStr).matches()) {
		link = "tel:" + matchStr;
		}
		if (link != null) {
		String href = String.format("<a href=\"%s\">%s</a>", link, matchStr);
		m.appendReplacement(sb, href);
		}
		}
		m.appendTail(sb);
		sb.append("</body></html>");

		byte[] byteBuff = sb.toString().getBytes();

		outStream = context.openFileOutput(fileName, Context.MODE_PRIVATE);
		if (outStream != null) {
		@@ -283,4 +339,44 @@ public class BluetoothOppLauncherActivity extends Activity {
		}
		return fileUri;
		}

		/**
		* Escape some special character as HTML escape sequence.
		*
		* @param text Text to be displayed using WebView.
		* @return Text correctly escaped.
		*/
		private static String escapeCharacterToDisplay(String text) {
		Pattern pattern = PLAIN_TEXT_TO_ESCAPE;
		Matcher match = pattern.matcher(text);

		if (match.find()) {
		StringBuilder out = new StringBuilder();
		int end = 0;
		do {
		int start = match.start();
		out.append(text.substring(end, start));
		end = match.end();
		int c = text.codePointAt(start);
		if (c == ' ') {
		// Escape successive spaces into series of " ".
		for (int i = 1, n = end - start; i < n; ++i) {
		out.append(" ");
		}
		out.append(' ');
		} else if (c == '\r' \|\| c == '\n') {
		out.append("<br>");
		} else if (c == '<') {
		out.append("<");
		} else if (c == '>') {
		out.append(">");
		} else if (c == '&') {
		out.append("&");
		}
		} while (match.find());
		out.append(text.substring(end));
		text = out.toString();
		}
		return text;
		}
		}