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fix wrong HTML start/end tags in strings.xml (#2631)
* fix wrong HTML start/end tags in strings.xml
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itaybia
GitHub
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commit
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@ -19,11 +19,22 @@ package brut.androlib.res.decoder;
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import brut.androlib.res.xml.ResXmlEncoders;
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import brut.util.ExtDataInput;
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import com.google.common.annotations.VisibleForTesting;
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import com.google.common.base.Splitter;
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import com.google.common.base.Splitter.MapSplitter;
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import com.google.common.collect.ComparisonChain;
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import java.io.IOException;
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import java.nio.ByteBuffer;
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import java.nio.charset.*;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.StringJoiner;
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import java.util.logging.Logger;
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import java.util.stream.Stream;
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import static com.google.common.collect.Ordering.explicit;
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import static java.util.Comparator.naturalOrder;
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import static java.util.Comparator.reverseOrder;
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public class StringBlock {
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@ -98,10 +109,164 @@ public class StringBlock {
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return decodeString(offset, length);
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}
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private static class Tag implements Comparable<Tag> {
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private static final MapSplitter ATTRIBUTES_SPLITTER =
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Splitter.on(';').withKeyValueSeparator(Splitter.on('=').limit(2));
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private final String tag;
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private final Type type;
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private final int position;
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private final int matchingTagPosition;
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Tag(String tag, Type type, int position, int matchingTagPosition) {
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this.tag = ResXmlEncoders.escapeXmlChars(tag);
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this.type = type;
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this.position = position;
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this.matchingTagPosition = matchingTagPosition;
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}
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/**
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* compares this tag and another, returning the order that should be between them.
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* order by:
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* position
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* closing tag has precedence over openning tag (unless it is the same tag)
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* tags that are enclosed in others should appear later if openning tag, or first if closing tag
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* lexicographical sort. openning tag and closing tag in reverse so that one tag will be contained in the other and not each contain the other partially
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* @param o - the other tag object to compare to
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* @return the order in between this object and the other
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*/
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@Override
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public int compareTo(Tag o) {
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return ComparisonChain.start()
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.compare(position, o.position)
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// When one tag closes where another starts, we always close before opening.
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.compare(type, o.type, this.tag.equals(o.tag) ? explicit(Type.OPEN, Type.CLOSE) : explicit(Type.CLOSE, Type.OPEN))
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// Open first the tag which closes last, and close first the tag which opened last.
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.compare(matchingTagPosition, o.matchingTagPosition, reverseOrder())
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// When two tags open and close together, we order alphabetically. When they close,
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// we reversed the order. This ensures that the XML tags are properly nested.
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.compare(tag, o.tag, type.equals(Type.OPEN) ? naturalOrder() : reverseOrder())
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.result();
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}
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/**
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* formats the tag value and attributes according to whether the tag is an openning or closing tag
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* @return the formatted tag value as a string
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*/
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@Override
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public String toString() {
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// "tag" can either be just the tag or have the form "tag;attr1=value1;attr2=value2;[...]".
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int separatorIdx = tag.indexOf(';');
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String actualTag = separatorIdx == -1 ? tag : tag.substring(0, separatorIdx);
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switch (type) {
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case OPEN:
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if (separatorIdx != -1) {
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StringJoiner attributes = new StringJoiner(" ");
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ATTRIBUTES_SPLITTER
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.split(tag.substring(separatorIdx + 1, tag.endsWith(";") ? tag.length() - 1: tag.length()))
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.forEach((key, value) -> attributes.add(String.format("%s=\"%s\"", key, value)));
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return String.format("<%s %s>", actualTag, attributes);
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}
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return String.format("<%s>", actualTag);
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case CLOSE:
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return String.format("</%s>", actualTag);
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}
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throw new IllegalStateException();
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}
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private enum Type {
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OPEN,
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CLOSE
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}
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}
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private static class Span {
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private String tag;
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private int firstChar, lastChar;
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Span(String val, int firstIndex, int lastIndex) {
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this.tag = val;
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this.firstChar = firstIndex;
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this.lastChar = lastIndex;
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}
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String getTag() {
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return tag;
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}
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int getFirstChar() {
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return firstChar;
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}
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int getLastChar() {
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return lastChar;
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}
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}
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private static class StyledString {
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String val;
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int[] styles;
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StyledString(String raw, int[] stylesArr) {
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this.val = raw;
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this.styles = stylesArr;
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}
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String getValue() {
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return val;
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}
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List<Span> getSpanList(StringBlock stringBlock) {
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ArrayList<Span> spanList = new ArrayList<>();
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for (int i = 0; i != styles.length; i += 3) {
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spanList.add(new Span(stringBlock.getString(styles[i]), styles[i + 1], styles[i + 2]));
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}
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return spanList;
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}
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}
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/**
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*
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* @param styledString - the raw string with its corresponding styling tags and their locations
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* @return a formatted styled string that contains the styling tag in the correct locations
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*/
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String processStyledString(StyledString styledString) {
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ArrayList<Tag> sortedTagsList = new ArrayList<>();
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styledString.getSpanList(this).stream()
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.flatMap(
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span ->
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Stream.of(
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// "+ 1" because the last char is included.
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new Tag(
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span.getTag(), Tag.Type.OPEN, span.getFirstChar(), span.getLastChar() + 1),
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// "+ 1" because the last char is included.
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new Tag(
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span.getTag(),
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Tag.Type.CLOSE,
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span.getLastChar() + 1,
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span.getFirstChar())))
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// So we can edit the string in place, we need to start from the end.
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.sorted(naturalOrder())
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.forEach(tag -> sortedTagsList.add(tag));
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String raw = styledString.getValue();
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StringBuilder string = new StringBuilder(raw.length() + 32);
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int lastIndex = 0;
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for (Tag tag : sortedTagsList) {
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string.append(ResXmlEncoders.escapeXmlChars(raw.substring(lastIndex, tag.position)));
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string.append(tag);
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lastIndex = tag.position;
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}
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string.append(ResXmlEncoders.escapeXmlChars(raw.substring(lastIndex)));
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return string.toString();
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}
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/**
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* Returns string with style tags (html-like).
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* @param index int
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* @return String
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*/
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public String getHTML(int index) {
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String raw = getString(index);
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@ -117,96 +282,9 @@ public class StringBlock {
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if (style[1] > raw.length()) {
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return ResXmlEncoders.escapeXmlChars(raw);
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}
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StringBuilder html = new StringBuilder(raw.length() + 32);
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int[] opened = new int[style.length / 3];
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boolean[] unclosed = new boolean[style.length / 3];
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int offset = 0, depth = 0;
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while (true) {
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int i = -1, j;
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for (j = 0; j != style.length; j += 3) {
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if (style[j + 1] == -1) {
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continue;
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}
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if (i == -1 || style[i + 1] > style[j + 1]) {
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i = j;
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}
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}
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int start = ((i != -1) ? style[i + 1] : raw.length());
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for (j = depth - 1; j >= 0; j--) {
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int last = opened[j];
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int end = style[last + 2];
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if (end >= start) {
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if (style[last + 1] == -1 && end != -1) {
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unclosed[j] = true;
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}
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break;
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}
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if (offset <= end) {
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html.append(ResXmlEncoders.escapeXmlChars(raw.substring(offset, end + 1)));
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offset = end + 1;
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}
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outputStyleTag(getString(style[last]), html, true);
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}
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depth = j + 1;
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if (offset < start) {
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html.append(ResXmlEncoders.escapeXmlChars(raw.substring(offset, start)));
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if (j >= 0 && unclosed.length >= j && unclosed[j]) {
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if (unclosed.length > (j + 1) && unclosed[j + 1] || unclosed.length == 1) {
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outputStyleTag(getString(style[opened[j]]), html, true);
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}
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}
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offset = start;
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}
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if (i == -1) {
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break;
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}
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outputStyleTag(getString(style[i]), html, false);
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style[i + 1] = -1;
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opened[depth++] = i;
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}
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return html.toString();
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}
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private void outputStyleTag(String tag, StringBuilder builder, boolean close) {
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builder.append('<');
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if (close) {
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builder.append('/');
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}
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int pos = tag.indexOf(';');
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if (pos == -1) {
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builder.append(tag);
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} else {
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builder.append(tag.substring(0, pos));
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if (!close) {
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boolean loop = true;
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while (loop) {
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int pos2 = tag.indexOf('=', pos + 1);
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// malformed style information will cause crash. so
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// prematurely end style tags, if recreation
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// cannot be created.
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if (pos2 != -1) {
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builder.append(' ').append(tag.substring(pos + 1, pos2)).append("=\"");
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pos = tag.indexOf(';', pos2 + 1);
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String val;
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if (pos != -1) {
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val = tag.substring(pos2 + 1, pos);
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} else {
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loop = false;
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val = tag.substring(pos2 + 1);
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}
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builder.append(ResXmlEncoders.escapeXmlChars(val)).append('"');
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} else {
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loop = false;
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}
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}
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}
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}
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builder.append('>');
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StyledString styledString = new StyledString(raw, style);
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return processStyledString(styledString);
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}
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/**
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@ -42,4 +42,5 @@ bar"</string>
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<string name="test_string40">[<font size="17">]Ţåþ ţö ţýþé þåššŵöŕð one two three</font></string>
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<string name="test_string41"><font size="17">[Ţåþ ţö ţýþé þåššŵöŕð one two three]</font></string>
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<string name="test_string42">🔆</string>
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<string name="test_string43"><ul> <li><b>aaaaa aa aaaaa</b> – aaaaaaa aaaaaaaaaa aa aaaaaaaa aaaaaa aaaaa (aaaa) aaaa aaaaaaaaa aaaaa aa aaaaaaaaa aaaaaaa aaaa</li> <li><b>aaaaaaaaa aaaaaaaaaaaaaaa aaaaaaaa</b> – aaaaaaa aaaaaaaaaa aaaaaaaaa aaaa aaaaaa aa aaaa aaaa aaaa aaaa aaaaaaa aaaaaaaaaaaaa, aaaaaa aaa aaaaaaaaaa (aaa) aaaaaaaaaaaaaaa</li> <li><b>aaaaaaaaaaa aaaaaa aaaaaaaaaa</b> – aaaaaaaaaa aaaa aaaaaa aa a aaa aa aaaaaa aaa aaaaaaa (aaaaa aaaaaaaa) aaaaaaaa aa aaaaaa aaaaa aaa aaaa</li> </ul></string>
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</resources>
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@ -3,4 +3,5 @@
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<string name="app_name">testapp</string>
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<string name="long_string_32767" />
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<string name="surrogate_issue_2299">🔆</string>
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<string name="test_string43"><ul> <li><b>aaaaa aa aaaaa</b> – aaaaaaa aaaaaaaaaa aa aaaaaaaa aaaaaa aaaaa (aaaa) aaaa aaaaaaaaa aaaaa aa aaaaaaaaa aaaaaaa aaaa</li> <li><b>aaaaaaaaa aaaaaaaaaaaaaaa aaaaaaaa</b> – aaaaaaa aaaaaaaaaa aaaaaaaaa aaaa aaaaaa aa aaaa aaaa aaaa aaaa aaaaaaa aaaaaaaaaaaaa, aaaaaa aaa aaaaaaaaaa (aaa) aaaaaaaaaaaaaaa</li> <li><b>aaaaaaaaaaa aaaaaa aaaaaaaaaa</b> – aaaaaaaaaa aaaa aaaaaa aa a aaa aa aaaaaa aaa aaaaaaa (aaaaa aaaaaaaa) aaaaaaaa aa aaaaaa aaaaa aaa aaaa</li> </ul></string>
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</resources>
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