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tbel: add parseBytesToFloat

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nickAS21 2023-06-14 13:10:52 +03:00
parent 7258c5de73
commit 50d3a6d925
1 changed files with 36 additions and 0 deletions
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36
common/script/script-api/src/main/java/org/thingsboard/script/api/tbel/TbUtils.java
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@ -15,6 +15,7 @@
*/ */
package org.thingsboard.script.api.tbel; package org.thingsboard.script.api.tbel;
import com.google.common.primitives.Bytes;
import org.mvel2.ExecutionContext; import org.mvel2.ExecutionContext;
import org.mvel2.ParserConfiguration; import org.mvel2.ParserConfiguration;
import org.mvel2.execution.ExecutionArrayList; import org.mvel2.execution.ExecutionArrayList;
@ -81,6 +82,14 @@ public class TbUtils {
byte[].class, int.class, int.class))); byte[].class, int.class, int.class)));
parserConfig.addImport("parseBytesToInt", new MethodStub(TbUtils.class.getMethod("parseBytesToInt", parserConfig.addImport("parseBytesToInt", new MethodStub(TbUtils.class.getMethod("parseBytesToInt",
byte[].class, int.class, int.class, boolean.class))); byte[].class, int.class, int.class, boolean.class)));
parserConfig.addImport("parseBytesToFloat", new MethodStub(TbUtils.class.getMethod("parseBytesToFloat",
byte[].class, int.class, boolean.class)));
parserConfig.addImport("parseBytesToFloat", new MethodStub(TbUtils.class.getMethod("parseBytesToFloat",
byte[].class, int.class)));
parserConfig.addImport("parseBytesToFloat", new MethodStub(TbUtils.class.getMethod("parseBytesToFloat",
List.class, int.class, boolean.class)));
parserConfig.addImport("parseBytesToFloat", new MethodStub(TbUtils.class.getMethod("parseBytesToFloat",
List.class, int.class)));
parserConfig.addImport("toFixed", new MethodStub(TbUtils.class.getMethod("toFixed", parserConfig.addImport("toFixed", new MethodStub(TbUtils.class.getMethod("toFixed",
double.class, int.class))); double.class, int.class)));
parserConfig.addImport("hexToBytes", new MethodStub(TbUtils.class.getMethod("hexToBytes", parserConfig.addImport("hexToBytes", new MethodStub(TbUtils.class.getMethod("hexToBytes",
@ -293,6 +302,33 @@ public class TbUtils {
return bb.getInt(); return bb.getInt();
} }
public static float parseBytesToFloat(byte[] data, int offset) {
return parseBytesToFloat(data, offset, true);
}
public static float parseBytesToFloat(byte[] data, int offset, boolean bigEndian) {
if (data != null && data.length > 0) {
int length = 4;
if (offset > data.length) {
throw new IllegalArgumentException("Offset: " + offset + " is out of bounds for array with length: " + data.length + "!");
}
if ((offset + length) > data.length) {
throw new IllegalArgumentException("Default length is always 4 bytes. Offset: " + offset + " and Length: " + length + " is out of bounds for array with length: " + data.length + "!");
}
int i = parseBytesToInt(data, offset, length, bigEndian);
return Float.intBitsToFloat(i);
} else {
throw new IllegalArgumentException("Array is null or array length is 0!");
}
}
public static float parseBytesToFloat(List data, int offset) {
return parseBytesToFloat(data, offset, true);
}
public static float parseBytesToFloat(List data, int offset, boolean bigEndian) {
return parseBytesToFloat(Bytes.toArray(data), offset, bigEndian);
}
public static String bytesToHex(ExecutionArrayList<?> bytesList) { public static String bytesToHex(ExecutionArrayList<?> bytesList) {
byte[] bytes = new byte[bytesList.size()]; byte[] bytes = new byte[bytesList.size()];
for (int i = 0; i < bytesList.size(); i++) { for (int i = 0; i < bytesList.size(); i++) {