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use own algorithm to count emoji instead of using emoji-java

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This commit is contained in:
Daniel Gultsch 2017-09-29 22:56:17 +02:00
parent 42b4528d03
commit f0e48c8af5
4 changed files with 154 additions and 9 deletions
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3
build.gradle
View file

@ -51,9 +51,6 @@ dependencies {
compile 'com.makeramen:roundedimageview:2.3.0'
compile "com.wefika:flowlayout:0.4.1"
compile 'net.ypresto.androidtranscoder:android-transcoder:0.2.0'
compile('com.vdurmont:emoji-java:3.3.0') {
exclude group: 'org.json', module: 'json'
}
}
ext {

5
src/main/java/eu/siacs/conversations/entities/Message.java
View file

@ -4,8 +4,6 @@ import android.content.ContentValues;
import android.database.Cursor;
import android.text.SpannableStringBuilder;
import com.vdurmont.emoji.EmojiManager;
import java.net.MalformedURLException;
import java.net.URL;
@ -14,6 +12,7 @@ import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
import eu.siacs.conversations.http.AesGcmURLStreamHandler;
import eu.siacs.conversations.ui.adapter.MessageAdapter;
import eu.siacs.conversations.utils.CryptoHelper;
import eu.siacs.conversations.utils.Emoticons;
import eu.siacs.conversations.utils.GeoHelper;
import eu.siacs.conversations.utils.MimeUtils;
import eu.siacs.conversations.utils.UIHelper;
@ -684,7 +683,7 @@ public class Message extends AbstractEntity {
public synchronized boolean bodyIsOnlyEmojis() {
if (isEmojisOnly == null) {
isEmojisOnly = EmojiManager.isOnlyEmojis(body.replaceAll("\\s", ""));
isEmojisOnly = Emoticons.isOnlyEmoji(body.replaceAll("\\s",""));
}
return isEmojisOnly;
}

5
src/main/java/eu/siacs/conversations/ui/adapter/MessageAdapter.java
View file

@ -37,8 +37,6 @@ import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;
import com.vdurmont.emoji.EmojiManager;
import java.lang.ref.WeakReference;
import java.net.URL;
import java.util.List;
@ -67,6 +65,7 @@ import eu.siacs.conversations.ui.widget.ClickableMovementMethod;
import eu.siacs.conversations.ui.widget.CopyTextView;
import eu.siacs.conversations.ui.widget.ListSelectionManager;
import eu.siacs.conversations.utils.CryptoHelper;
import eu.siacs.conversations.utils.Emoticons;
import eu.siacs.conversations.utils.GeoHelper;
import eu.siacs.conversations.utils.Patterns;
import eu.siacs.conversations.utils.UIHelper;
@ -332,7 +331,7 @@ public class MessageAdapter extends ArrayAdapter<Message> implements CopyTextVie
viewHolder.image.setVisibility(View.GONE);
viewHolder.messageBody.setVisibility(View.VISIBLE);
Spannable span = new SpannableString(body);
float size = EmojiManager.isEmoji(body) ? 3.0f : 2.0f;
float size = Emoticons.isEmoji(body) ? 3.0f : 2.0f;
span.setSpan(new RelativeSizeSpan(size), 0, body.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
viewHolder.messageBody.setText(span);
}

150
src/main/java/eu/siacs/conversations/utils/Emoticons.java Normal file
View file

@ -0,0 +1,150 @@
package eu.siacs.conversations.utils;
import android.util.Log;
import java.util.ArrayList;
import java.util.List;
import eu.siacs.conversations.Config;
public class Emoticons {
private static final UnicodeRange MISC_SYMBOLS_AND_PICTOGRAPHS = new UnicodeRange(0x1F300,0x1F5FF);
private static final UnicodeRange SUPPLEMENTAL_SYMBOLS = new UnicodeRange(0x1F900,0x1F9FF);
private static final UnicodeRange EMOTICONS = new UnicodeRange(0x1F600,0x1F64F);
private static final UnicodeRange TRANSPORT_SYMBOLS = new UnicodeRange(0x1F680,0x1F6FF);
private static final UnicodeRange MISC_SYMBOLS = new UnicodeRange(0x2600,0x26FF);
private static final UnicodeRange DINGBATS = new UnicodeRange(0x2700,0x27BF);
private static final UnicodeRange REGIONAL_INDICATORS = new UnicodeRange(0x1F1E6,0x1F1FF);
private static final UnicodeBlocks EMOJIS = new UnicodeBlocks(MISC_SYMBOLS_AND_PICTOGRAPHS,SUPPLEMENTAL_SYMBOLS,EMOTICONS,TRANSPORT_SYMBOLS,MISC_SYMBOLS,DINGBATS);
private static final int ZWJ = 0x200D;
private static final int VARIATION_16 = 0xFE0F;
private static final UnicodeRange FITZPATRICK = new UnicodeRange(0x1F3FB,0x1F3FF);
private static List<Symbol> parse(String input) {
List<Symbol> symbols = new ArrayList<>();
Builder builder = new Builder();
boolean needsFinalBuild = false;
for (int cp, i = 0; i < input.length(); i += Character.charCount(cp)) {
cp = input.codePointAt(i);
if (builder.offer(cp)) {
needsFinalBuild = true;
} else {
symbols.add(builder.build());
builder = new Builder();
if (builder.offer(cp)) {
needsFinalBuild = true;
}
}
}
if (needsFinalBuild) {
symbols.add(builder.build());
}
return symbols;
}
public static boolean isEmoji(String input) {
List<Symbol> symbols = parse(input);
return symbols.size() == 1 && symbols.get(0) == Symbol.EMOJI;
}
public static boolean isOnlyEmoji(String input) {
List<Symbol> symbols = parse(input);
for(Symbol symbol : symbols) {
if (symbol == Symbol.NON_EMOJI) {
return false;
}
}
return symbols.size() > 0;
}
private enum Symbol {
EMOJI, NON_EMOJI
}
private static class Builder {
private final List<Integer> codepoints = new ArrayList<>();
public boolean offer(int codepoint) {
if (this.codepoints.size() == 0) {
if (REGIONAL_INDICATORS.contains(codepoint)) {
codepoints.add(codepoint);
return true;
} else if (EMOJIS.contains(codepoint) && !FITZPATRICK.contains(codepoint) && codepoint != ZWJ) {
codepoints.add(codepoint);
return true;
}
} else {
int previous = codepoints.get(codepoints.size() -1);
if (REGIONAL_INDICATORS.contains(previous) && REGIONAL_INDICATORS.contains(codepoint)) {
if (codepoints.size() == 1) {
codepoints.add(codepoint);
return true;
}
} else if (previous == VARIATION_16) {
if (isMerger(codepoint)) {
codepoints.add(codepoint);
return true;
}
} else if (isMerger(previous)) {
if (EMOJIS.contains(codepoint)) {
codepoints.add(codepoint);
return true;
}
} else {
if (isMerger(codepoint)) {
codepoints.add(codepoint);
return true;
} else if (codepoint == VARIATION_16 && EMOJIS.contains(previous)) {
codepoints.add(codepoint);
return true;
}
}
}
return false;
}
public static boolean isMerger(int codepoint) {
return codepoint == ZWJ || FITZPATRICK.contains(codepoint);
}
public Symbol build() {
return codepoints.size() == 0 ? Symbol.NON_EMOJI : Symbol.EMOJI;
}
}
public static class UnicodeBlocks {
final UnicodeRange[] ranges;
public UnicodeBlocks(UnicodeRange... ranges) {
this.ranges = ranges;
}
public boolean contains(int codepoint) {
for(UnicodeRange range : ranges) {
if (range.contains(codepoint)) {
return true;
}
}
return false;
}
}
public static class UnicodeRange {
private final int lower;
private final int upper;
UnicodeRange(int lower, int upper) {
this.lower = lower;
this.upper = upper;
}
public boolean contains(int codePoint) {
return codePoint >= lower && codePoint <= upper;
}
}
}