Add Sequence<JarEntry> extension property to JarInputStream

This improves the readability of code that iterates through all entries
in a jar.

Signed-off-by: Graham <gpe@openrs2.dev>

asm/src/main/java/dev/openrs2/asm/io/JarLibraryReader.kt

@@ -2,6 +2,7 @@ package dev.openrs2.asm.io
 
 import dev.openrs2.asm.classpath.JsrInliner
 import dev.openrs2.asm.classpath.Library
+import dev.openrs2.util.io.entries
 import org.objectweb.asm.ClassReader
 import org.objectweb.asm.tree.ClassNode
 import java.util.jar.JarInputStream
@@ -10,8 +11,7 @@ class JarLibraryReader(private val input: JarInputStream) : LibraryReader {
     override fun read(): Library {
         val library = Library()
 
-        while (true) {
+        for (entry in input.entries) {
-            val entry = input.nextJarEntry ?: break
             if (!entry.name.endsWith(CLASS_SUFFIX)) {
                 continue
             }

asm/src/main/java/dev/openrs2/asm/io/SignedJarLibraryWriter.kt

@@ -4,6 +4,7 @@ import dev.openrs2.asm.classpath.ClassPath
 import dev.openrs2.asm.classpath.Library
 import dev.openrs2.crypto.Pkcs12KeyStore
 import dev.openrs2.util.io.DeterministicJarOutputStream
+import dev.openrs2.util.io.entries
 import java.io.OutputStream
 import java.nio.file.Files
 import java.nio.file.Path
@@ -37,8 +38,8 @@ class SignedJarLibraryWriter(
     private fun repack(signedJar: Path) {
         JarInputStream(Files.newInputStream(signedJar)).use { input ->
             DeterministicJarOutputStream(output, input.manifest).use { output ->
-                generateSequence { input.nextJarEntry }.forEach {
+                for (entry in input.entries) {
-                    output.putNextEntry(it)
+                    output.putNextEntry(entry)
                     input.copyTo(output)
                 }
             }

util/src/main/java/dev/openrs2/util/io/DeterministicJarOutputStream.kt

@@ -34,8 +34,7 @@ class DeterministicJarOutputStream : JarOutputStream {
         fun repack(src: Path, dest: Path) {
             JarInputStream(Files.newInputStream(src)).use { input ->
                 create(Files.newOutputStream(dest), input.manifest).use { output ->
-                    while (true) {
+                    for (entry in input.entries) {
-                        val entry = input.nextJarEntry ?: break
                         output.putNextEntry(entry)
                         input.copyTo(output)
                     }

util/src/main/java/dev/openrs2/util/io/JarInputStreamExtensions.kt

@@ -0,0 +1,6 @@
+package dev.openrs2.util.io
+
+import java.util.jar.JarInputStream
+
+val JarInputStream.entries
+    get() = generateSequence { nextJarEntry }