package com.firefly.utils.lang;
import com.firefly.utils.StringUtils;
import com.firefly.utils.exception.CommonRuntimeException;
import com.firefly.utils.lang.annotation.Name;
import java.io.IOException;
import java.lang.annotation.Annotation;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.security.CodeSource;
import java.security.ProtectionDomain;
import java.util.*;
/**
* TYPE Utilities. Provides various static utility methods for manipulating
* types and their string representations.
*/
public class TypeUtils {
public static final Class<?>[] NO_ARGS = new Class[]{};
public static final int CR = '\015';
public static final int LF = '\012';
/* ------------------------------------------------------------ */
private static final HashMap<String, Class<?>> name2Class = new HashMap<>();
static {
name2Class.put("boolean", java.lang.Boolean.TYPE);
name2Class.put("byte", java.lang.Byte.TYPE);
name2Class.put("char", java.lang.Character.TYPE);
name2Class.put("double", java.lang.Double.TYPE);
name2Class.put("float", java.lang.Float.TYPE);
name2Class.put("int", java.lang.Integer.TYPE);
name2Class.put("long", java.lang.Long.TYPE);
name2Class.put("short", java.lang.Short.TYPE);
name2Class.put("void", java.lang.Void.TYPE);
name2Class.put("java.lang.Boolean.TYPE", java.lang.Boolean.TYPE);
name2Class.put("java.lang.Byte.TYPE", java.lang.Byte.TYPE);
name2Class.put("java.lang.Character.TYPE", java.lang.Character.TYPE);
name2Class.put("java.lang.Double.TYPE", java.lang.Double.TYPE);
name2Class.put("java.lang.Float.TYPE", java.lang.Float.TYPE);
name2Class.put("java.lang.Integer.TYPE", java.lang.Integer.TYPE);
name2Class.put("java.lang.Long.TYPE", java.lang.Long.TYPE);
name2Class.put("java.lang.Short.TYPE", java.lang.Short.TYPE);
name2Class.put("java.lang.Void.TYPE", java.lang.Void.TYPE);
name2Class.put("java.lang.Boolean", java.lang.Boolean.class);
name2Class.put("java.lang.Byte", java.lang.Byte.class);
name2Class.put("java.lang.Character", java.lang.Character.class);
name2Class.put("java.lang.Double", java.lang.Double.class);
name2Class.put("java.lang.Float", java.lang.Float.class);
name2Class.put("java.lang.Integer", java.lang.Integer.class);
name2Class.put("java.lang.Long", java.lang.Long.class);
name2Class.put("java.lang.Short", java.lang.Short.class);
name2Class.put("Boolean", java.lang.Boolean.class);
name2Class.put("Byte", java.lang.Byte.class);
name2Class.put("Character", java.lang.Character.class);
name2Class.put("Double", java.lang.Double.class);
name2Class.put("Float", java.lang.Float.class);
name2Class.put("Integer", java.lang.Integer.class);
name2Class.put("Long", java.lang.Long.class);
name2Class.put("Short", java.lang.Short.class);
name2Class.put(null, java.lang.Void.TYPE);
name2Class.put("string", java.lang.String.class);
name2Class.put("String", java.lang.String.class);
name2Class.put("java.lang.String", java.lang.String.class);
}
/* ------------------------------------------------------------ */
private static final HashMap<Class<?>, String> class2Name = new HashMap<>();
static {
class2Name.put(java.lang.Boolean.TYPE, "boolean");
class2Name.put(java.lang.Byte.TYPE, "byte");
class2Name.put(java.lang.Character.TYPE, "char");
class2Name.put(java.lang.Double.TYPE, "double");
class2Name.put(java.lang.Float.TYPE, "float");
class2Name.put(java.lang.Integer.TYPE, "int");
class2Name.put(java.lang.Long.TYPE, "long");
class2Name.put(java.lang.Short.TYPE, "short");
class2Name.put(java.lang.Void.TYPE, "void");
class2Name.put(java.lang.Boolean.class, "java.lang.Boolean");
class2Name.put(java.lang.Byte.class, "java.lang.Byte");
class2Name.put(java.lang.Character.class, "java.lang.Character");
class2Name.put(java.lang.Double.class, "java.lang.Double");
class2Name.put(java.lang.Float.class, "java.lang.Float");
class2Name.put(java.lang.Integer.class, "java.lang.Integer");
class2Name.put(java.lang.Long.class, "java.lang.Long");
class2Name.put(java.lang.Short.class, "java.lang.Short");
class2Name.put(null, "void");
class2Name.put(java.lang.String.class, "java.lang.String");
}
/* ------------------------------------------------------------ */
private static final HashMap<Class<?>, Method> class2Value = new HashMap<>();
static {
try {
Class<?>[] s = {java.lang.String.class};
class2Value.put(java.lang.Boolean.TYPE,
java.lang.Boolean.class.getMethod("valueOf", s));
class2Value.put(java.lang.Byte.TYPE,
java.lang.Byte.class.getMethod("valueOf", s));
class2Value.put(java.lang.Double.TYPE,
java.lang.Double.class.getMethod("valueOf", s));
class2Value.put(java.lang.Float.TYPE,
java.lang.Float.class.getMethod("valueOf", s));
class2Value.put(java.lang.Integer.TYPE,
java.lang.Integer.class.getMethod("valueOf", s));
class2Value.put(java.lang.Long.TYPE,
java.lang.Long.class.getMethod("valueOf", s));
class2Value.put(java.lang.Short.TYPE,
java.lang.Short.class.getMethod("valueOf", s));
class2Value.put(java.lang.Boolean.class,
java.lang.Boolean.class.getMethod("valueOf", s));
class2Value.put(java.lang.Byte.class,
java.lang.Byte.class.getMethod("valueOf", s));
class2Value.put(java.lang.Double.class,
java.lang.Double.class.getMethod("valueOf", s));
class2Value.put(java.lang.Float.class,
java.lang.Float.class.getMethod("valueOf", s));
class2Value.put(java.lang.Integer.class,
java.lang.Integer.class.getMethod("valueOf", s));
class2Value.put(java.lang.Long.class,
java.lang.Long.class.getMethod("valueOf", s));
class2Value.put(java.lang.Short.class,
java.lang.Short.class.getMethod("valueOf", s));
} catch (Exception e) {
throw new Error(e);
}
}
/* ------------------------------------------------------------ */
/**
* Array to List.
* <p>
* Works like {@link Arrays#asList(Object...)}, but handles null arrays.
*
* @param a the array to convert to a list
* @param <T> the array and list entry type
* @return a list backed by the array.
*/
public static <T> List<T> asList(T[] a) {
if (a == null)
return Collections.emptyList();
return Arrays.asList(a);
}
/* ------------------------------------------------------------ */
/**
* Class from a canonical name for a type.
*
* @param name A class or type name.
* @return A class , which may be a primitive TYPE field..
*/
public static Class<?> fromName(String name) {
return name2Class.get(name);
}
/* ------------------------------------------------------------ */
/**
* Canonical name for a type.
*
* @param type A class , which may be a primitive TYPE field.
* @return Canonical name.
*/
public static String toName(Class<?> type) {
return class2Name.get(type);
}
/* ------------------------------------------------------------ */
/**
* Convert String value to instance.
*
* @param type The class of the instance, which may be a primitive TYPE field.
* @param value The value as a string.
* @return The value as an Object.
*/
public static Object valueOf(Class<?> type, String value) {
try {
if (type.equals(java.lang.String.class))
return value;
Method m = class2Value.get(type);
if (m != null)
return m.invoke(null, value);
if (type.equals(java.lang.Character.TYPE) ||
type.equals(java.lang.Character.class))
return value.charAt(0);
Constructor<?> c = type.getConstructor(java.lang.String.class);
return c.newInstance(value);
} catch (NoSuchMethodException | IllegalAccessException | InstantiationException x) {
throw new CommonRuntimeException(x);
} catch (InvocationTargetException x) {
if (x.getTargetException() instanceof Error)
throw (Error) x.getTargetException();
}
return null;
}
/* ------------------------------------------------------------ */
/**
* Convert String value to instance.
*
* @param type classname or type (eg int)
* @param value The value as a string.
* @return The value as an Object.
*/
public static Object valueOf(String type, String value) {
return valueOf(fromName(type), value);
}
/* ------------------------------------------------------------ */
/**
* Parse an int from a substring.
* Negative numbers are not handled.
*
* @param s String
* @param offset Offset within string
* @param length Length of integer or -1 for remainder of string
* @param base base of the integer
* @return the parsed integer
* @throws NumberFormatException if the string cannot be parsed
*/
public static int parseInt(String s, int offset, int length, int base)
throws NumberFormatException {
int value = 0;
if (length < 0)
length = s.length() - offset;
for (int i = 0; i < length; i++) {
char c = s.charAt(offset + i);
int digit = convertHexDigit((int) c);
if (digit < 0 || digit >= base)
throw new NumberFormatException(s.substring(offset, offset + length));
value = value * base + digit;
}
return value;
}
/* ------------------------------------------------------------ */
/**
* Parse an int from a byte array of ascii characters.
* Negative numbers are not handled.
*
* @param b byte array
* @param offset Offset within string
* @param length Length of integer or -1 for remainder of string
* @param base base of the integer
* @return the parsed integer
* @throws NumberFormatException if the array cannot be parsed into an integer
*/
public static int parseInt(byte[] b, int offset, int length, int base)
throws NumberFormatException {
int value = 0;
if (length < 0)
length = b.length - offset;
for (int i = 0; i < length; i++) {
char c = (char) (0xff & b[offset + i]);
int digit = c - '0';
if (digit < 0 || digit >= base || digit >= 10) {
digit = 10 + c - 'A';
if (digit < 10 || digit >= base)
digit = 10 + c - 'a';
}
if (digit < 0 || digit >= base)
throw new NumberFormatException(new String(b, offset, length));
value = value * base + digit;
}
return value;
}
/* ------------------------------------------------------------ */
public static byte[] parseBytes(String s, int base) {
byte[] bytes = new byte[s.length() / 2];
for (int i = 0; i < s.length(); i += 2)
bytes[i / 2] = (byte) TypeUtils.parseInt(s, i, 2, base);
return bytes;
}
/* ------------------------------------------------------------ */
public static String toString(byte[] bytes, int base) {
StringBuilder buf = new StringBuilder();
for (byte b : bytes) {
int bi = 0xff & b;
int c = '0' + (bi / base) % base;
if (c > '9')
c = 'a' + (c - '0' - 10);
buf.append((char) c);
c = '0' + bi % base;
if (c > '9')
c = 'a' + (c - '0' - 10);
buf.append((char) c);
}
return buf.toString();
}
/* ------------------------------------------------------------ */
/**
* @param c An ASCII encoded character 0-9 a-f A-F
* @return The byte value of the character 0-16.
*/
public static byte convertHexDigit(byte c) {
byte b = (byte) ((c & 0x1f) + ((c >> 6) * 0x19) - 0x10);
if (b < 0 || b > 15)
throw new NumberFormatException("!hex " + c);
return b;
}
/* ------------------------------------------------------------ */
/**
* @param c An ASCII encoded character 0-9 a-f A-F
* @return The byte value of the character 0-16.
*/
public static int convertHexDigit(char c) {
int d = ((c & 0x1f) + ((c >> 6) * 0x19) - 0x10);
if (d < 0 || d > 15)
throw new NumberFormatException("!hex " + c);
return d;
}
/* ------------------------------------------------------------ */
/**
* @param c An ASCII encoded character 0-9 a-f A-F
* @return The byte value of the character 0-16.
*/
public static int convertHexDigit(int c) {
int d = ((c & 0x1f) + ((c >> 6) * 0x19) - 0x10);
if (d < 0 || d > 15)
throw new NumberFormatException("!hex " + c);
return d;
}
/* ------------------------------------------------------------ */
public static void toHex(byte b, Appendable buf) {
try {
int d = 0xf & ((0xF0 & b) >> 4);
buf.append((char) ((d > 9 ? ('A' - 10) : '0') + d));
d = 0xf & b;
buf.append((char) ((d > 9 ? ('A' - 10) : '0') + d));
} catch (IOException e) {
throw new RuntimeException(e);
}
}
/* ------------------------------------------------------------ */
public static void toHex(int value, Appendable buf) throws IOException {
int d = 0xf & ((0xF0000000 & value) >> 28);
buf.append((char) ((d > 9 ? ('A' - 10) : '0') + d));
d = 0xf & ((0x0F000000 & value) >> 24);
buf.append((char) ((d > 9 ? ('A' - 10) : '0') + d));
d = 0xf & ((0x00F00000 & value) >> 20);
buf.append((char) ((d > 9 ? ('A' - 10) : '0') + d));
d = 0xf & ((0x000F0000 & value) >> 16);
buf.append((char) ((d > 9 ? ('A' - 10) : '0') + d));
d = 0xf & ((0x0000F000 & value) >> 12);
buf.append((char) ((d > 9 ? ('A' - 10) : '0') + d));
d = 0xf & ((0x00000F00 & value) >> 8);
buf.append((char) ((d > 9 ? ('A' - 10) : '0') + d));
d = 0xf & ((0x000000F0 & value) >> 4);
buf.append((char) ((d > 9 ? ('A' - 10) : '0') + d));
d = 0xf & value;
buf.append((char) ((d > 9 ? ('A' - 10) : '0') + d));
Integer.toString(0, 36);
}
/* ------------------------------------------------------------ */
public static void toHex(long value, Appendable buf) throws IOException {
toHex((int) (value >> 32), buf);
toHex((int) value, buf);
}
/* ------------------------------------------------------------ */
public static String toHexString(byte b) {
return toHexString(new byte[]{b}, 0, 1);
}
/* ------------------------------------------------------------ */
public static String toHexString(byte[] b) {
return toHexString(b, 0, b.length);
}
/* ------------------------------------------------------------ */
public static String toHexString(byte[] b, int offset, int length) {
StringBuilder buf = new StringBuilder();
for (int i = offset; i < offset + length; i++) {
int bi = 0xff & b[i];
int c = '0' + (bi / 16) % 16;
if (c > '9')
c = 'A' + (c - '0' - 10);
buf.append((char) c);
c = '0' + bi % 16;
if (c > '9')
c = 'a' + (c - '0' - 10);
buf.append((char) c);
}
return buf.toString();
}
/* ------------------------------------------------------------ */
public static byte[] fromHexString(String s) {
if (s.length() % 2 != 0)
throw new IllegalArgumentException(s);
byte[] array = new byte[s.length() / 2];
for (int i = 0; i < array.length; i++) {
int b = Integer.parseInt(s.substring(i * 2, i * 2 + 2), 16);
array[i] = (byte) (0xff & b);
}
return array;
}
public static void dump(Class<?> c) {
System.err.println("Dump: " + c);
dump(c.getClassLoader());
}
public static void dump(ClassLoader cl) {
System.err.println("Dump Loaders:");
while (cl != null) {
System.err.println(" loader " + cl);
cl = cl.getParent();
}
}
public static Object call(Class<?> oClass, String methodName, Object obj, Object[] arg)
throws InvocationTargetException, NoSuchMethodException {
Objects.requireNonNull(oClass, "Class cannot be null");
Objects.requireNonNull(methodName, "Method name cannot be null");
if (!StringUtils.hasText(methodName)) {
throw new IllegalArgumentException("Method name cannot be blank");
}
// Lets just try all methods for now
for (Method method : oClass.getMethods()) {
if (!method.getName().equals(methodName))
continue;
if (method.getParameterCount() != arg.length)
continue;
if (Modifier.isStatic(method.getModifiers()) != (obj == null))
continue;
if ((obj == null) && method.getDeclaringClass() != oClass)
continue;
try {
return method.invoke(obj, arg);
} catch (IllegalAccessException | IllegalArgumentException e) {
throw new CommonRuntimeException(e);
}
}
// Lets look for a method with optional arguments
Object[] args_with_opts = null;
for (Method method : oClass.getMethods()) {
if (!method.getName().equals(methodName))
continue;
if (method.getParameterCount() != arg.length + 1)
continue;
if (!method.getParameterTypes()[arg.length].isArray())
continue;
if (Modifier.isStatic(method.getModifiers()) != (obj == null))
continue;
if ((obj == null) && method.getDeclaringClass() != oClass)
continue;
if (args_with_opts == null)
args_with_opts = ArrayUtils.addToArray(arg, new Object[]{}, Object.class);
try {
return method.invoke(obj, args_with_opts);
} catch (IllegalAccessException | IllegalArgumentException e) {
throw new CommonRuntimeException(e);
}
}
throw new NoSuchMethodException(methodName);
}
public static Object construct(Class<?> klass, Object[] arguments) throws InvocationTargetException, NoSuchMethodException {
Objects.requireNonNull(klass, "Class cannot be null");
for (Constructor<?> constructor : klass.getConstructors()) {
if (arguments == null) {
// null arguments in .newInstance() is allowed
if (constructor.getParameterCount() != 0)
continue;
} else if (constructor.getParameterCount() != arguments.length)
continue;
try {
return constructor.newInstance(arguments);
} catch (InstantiationException | IllegalAccessException | IllegalArgumentException e) {
throw new CommonRuntimeException(e);
}
}
throw new NoSuchMethodException("<init>");
}
public static Object construct(Class<?> klass, Object[] arguments, Map<String, Object> namedArgMap) throws InvocationTargetException, NoSuchMethodException {
Objects.requireNonNull(klass, "Class cannot be null");
Objects.requireNonNull(namedArgMap, "Named Argument Map cannot be null");
for (Constructor<?> constructor : klass.getConstructors()) {
if (arguments == null) {
// null arguments in .newInstance() is allowed
if (constructor.getParameterCount() != 0)
continue;
} else if (constructor.getParameterCount() != arguments.length)
continue;
try {
Annotation[][] parameterAnnotations = constructor.getParameterAnnotations();
if (arguments == null || arguments.length == 0) {
return constructor.newInstance(arguments);
} else if (parameterAnnotations == null || parameterAnnotations.length == 0) {
return constructor.newInstance(arguments);
} else {
Object[] swizzled = new Object[arguments.length];
int count = 0;
for (Annotation[] annotations : parameterAnnotations) {
for (Annotation annotation : annotations) {
if (annotation instanceof Name) {
Name param = (Name) annotation;
if (namedArgMap.containsKey(param.value())) {
swizzled[count] = namedArgMap.get(param.value());
} else {
swizzled[count] = arguments[count];
}
++count;
}
}
}
return constructor.newInstance(swizzled);
}
} catch (InstantiationException | IllegalAccessException | IllegalArgumentException e) {
throw new CommonRuntimeException(e);
}
}
throw new NoSuchMethodException("<init>");
}
/* ------------------------------------------------------------ */
/**
* @param o Object to test for true
* @return True if passed object is not null and is either a Boolean with value true or evaluates to a string that evaluates to true.
*/
public static boolean isTrue(Object o) {
if (o == null)
return false;
if (o instanceof Boolean)
return (Boolean) o;
return Boolean.parseBoolean(o.toString());
}
/* ------------------------------------------------------------ */
/**
* @param o Object to test for false
* @return True if passed object is not null and is either a Boolean with value false or evaluates to a string that evaluates to false.
*/
public static boolean isFalse(Object o) {
if (o == null)
return false;
if (o instanceof Boolean)
return !(Boolean) o;
return "false".equalsIgnoreCase(o.toString());
}
/* ------------------------------------------------------------ */
public static URI getLocationOfClass(Class<?> clazz) {
try {
ProtectionDomain domain = clazz.getProtectionDomain();
if (domain != null) {
CodeSource source = domain.getCodeSource();
if (source != null) {
URL location = source.getLocation();
if (location != null)
return location.toURI();
}
}
String resourceName = clazz.getName().replace('.', '/') + ".class";
ClassLoader loader = clazz.getClassLoader();
URL url = (loader == null ? ClassLoader.getSystemClassLoader() : loader).getResource(resourceName);
if (url != null) {
return URIUtils.getJarSource(url.toURI());
}
} catch (URISyntaxException e) {
throw new CommonRuntimeException(e);
}
return null;
}
}