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add dimension encoder

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REAndroid 2023-01-01 04:36:58 -05:00
parent 4c5a1ab005
commit d0f6703a19
1 changed files with 77 additions and 3 deletions
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80
src/main/java/com/reandroid/lib/arsc/decoder/ValueDecoder.java
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@ -26,10 +26,77 @@ import com.reandroid.lib.common.EntryStore;
import java.util.Collection;
import java.util.Iterator;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class ValueDecoder {
public class ValueDecoder {
public static String decodeAttributeName(EntryStore store, PackageBlock currentPackage, int resourceId){
public static boolean isReference(String txt){
if(isNullReference(txt)){
return true;
}
return PATTERN_REFERENCE.matcher(txt).matches();
}
private static boolean isNullReference(String txt){
if("@null".equals(txt)){
return true;
}
if("@empty".equals(txt)){
return true;
}
return false;
}
public static int encodeFloatOrDimension(String dimensionString){
if(dimensionString==null){
return 0;
}
Matcher matcher=PATTERN_DIMEN.matcher(dimensionString);
if(!matcher.find()){
return 0;
}
String sign = matcher.group(1);
String number = matcher.group(2);
String unit = matcher.group(3);
float value = Float.parseFloat(number);
if("-".equals(sign)){
value=-value;
}
return encodeFloatOrDimension(value, unit);
}
private static int encodeFloatOrDimension(float val, String unit){
if(unit==null||"".equals(unit)){
return Float.floatToIntBits(val);
}
int index=0;
if("%".equals(unit)||"%p".equals(unit)){
val=val/100.0f;
if("%p".equals(unit)){
index=1;
}
}else {
index=ValueDecoder.getDimensionIndex(unit);
}
int result = 0;
int shift = 0;
if(val!=0.0f){
for(int i=0;i<4;i++){
float fl = val/ValueDecoder.RADIX_MULTS[i];
int fl_int = (int)fl;
int last = (fl_int&0xff);
if(fl_int!=0 && last==0){
shift = i;
result = fl_int;
break;
}
}
}
shift=shift<<4;
result= result | shift;
result= result | index;
return result;
}
public static String decodeAttributeName(EntryStore store, PackageBlock currentPackage, int resourceId){
EntryGroup entryGroup=searchEntryGroup(store, currentPackage, resourceId);
if(entryGroup==null){
return String.format("@0x%08x", resourceId);
@ -619,4 +686,11 @@ public class ValueDecoder {
static final float[] RADIX_MULTS = new float[] {
1.0f * MANTISSA_MULT, 1.0f / (1 << 7) * MANTISSA_MULT,
1.0f / (1 << 15) * MANTISSA_MULT, 1.0f / (1 << 23) * MANTISSA_MULT };
}
private static final Pattern PATTERN_COLOR = Pattern.compile("^#([0-9a-fA-F]{6,8})$");
private static final Pattern PATTERN_DIMEN = Pattern.compile("^(-?)([0-9]+\\.[0-9E\\-+]+)([dimnpstx%]{0,3})$");
private static final Pattern PATTERN_INTEGER = Pattern.compile("^(-?)([0-9]+)$");
private static final Pattern PATTERN_HEX = Pattern.compile("^0x[0-9a-fA-F]+$");
private static final Pattern PATTERN_REFERENCE = Pattern.compile("^([?@])(([^\\s:@?/]+:)?)([^\\s:@?/]+)/([^\\s:@?/]+)$");
}