CountOf - Text, Iterable, Iterator and Input

README.md

@@ -69,7 +69,7 @@ String text = new TextOf(
 To write a text into a file:
 
 ```java
-new LengthOfInput(
+new CountOf(
   new TeeInput(
     new InputOf(
       "Hello, world!"
@@ -182,7 +182,7 @@ List<String> sorted = new ListOf<>(
 To count elements in an iterable:
 
 ```java
-int total = new LengthOfIterable(
+int total = new CountOf(
   "how", "are", "you"
 ).value();
 ```
@@ -235,7 +235,7 @@ Cactoos | Guava | Apache Commons | JDK 8
 `FormattedText` | - | - | `String.format()`
 `IsBlank` | - | `StringUtils.isBlank()`| -
 `JoinedText` | - | - | `String.join()`
-`LengthOfText` | - | - | `String#length()`
+`CountOf` | - | - | `String#length()`
 `LowerText` | - | - | `String#toLowerCase()`
 `NormalizedText` | - | `StringUtils.normalize()` | -
 `RepeatedText` | - | `StringUtils.repeat()` | -

src/main/java/org/cactoos/CountOf.java

@@ -0,0 +1,117 @@
+/**
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2017 Yegor Bugayenko
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package org.cactoos;
+
+import java.util.Iterator;
+import org.cactoos.func.UncheckedScalar;
+import org.cactoos.io.CountOfInput;
+import org.cactoos.list.CountOfIterable;
+import org.cactoos.list.CountOfIterator;
+import org.cactoos.text.TextOf;
+
+/**
+ * Length of iterator.
+ *
+ * <p>There is no thread-safety guarantee.
+ *
+ * @author Ix ([email protected])
+ * @version $Id$
+ * @since 0.12
+ */
+public final class CountOf implements Scalar<Number> {
+
+    /**
+     * The underlying scalar number.
+     */
+    private final UncheckedScalar<?> scalar;
+
+    /**
+     * Ctor.
+     * @param string The string
+     */
+    public CountOf(final String string) {
+        this(new TextOf(string));
+    }
+
+    /**
+     * Ctor.
+     * @param text The text
+     */
+    public CountOf(final Text text) {
+        this(() -> text.asString().length());
+    }
+
+    /**
+     * Ctor.
+     * @param input The input
+     */
+    public CountOf(final Input input) {
+        this(new CountOfInput(input));
+    }
+
+    /**
+     * Ctor.
+     * @param input The input
+     * @param max Buffer size
+     */
+    public CountOf(final Input input, final int max) {
+        this(new CountOfInput(input, max));
+    }
+
+    /**
+     * Ctor.
+     * @param iterable The array of items
+     */
+    public CountOf(final Iterable<?> iterable) {
+        this(new CountOfIterable(iterable));
+    }
+
+    /**
+     * Ctor.
+     * @param iterator The iterator
+     */
+    public CountOf(final Iterator<?> iterator) {
+        this(new CountOfIterator(iterator));
+    }
+
+    /**
+     * Ctor.
+     * @param sclr The underlying scalar length
+     */
+    public CountOf(final Scalar<?> sclr) {
+        this.scalar = new UncheckedScalar<>(sclr);
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(this.value());
+    }
+
+    @Override
+    public Number value() {
+        return (Number) this.scalar.value();
+    }
+
+}
+

src/main/java/org/cactoos/Output.java

@@ -35,7 +35,7 @@
  * together with {@link Input} in order to modify the content
  * of a text file:</p>
  *
- * <pre> new LengthOfInput(
+ * <pre> new CountOf(
  *   new TeeInput(
  *     new InputOf(new TextOf("Hello, world!")),
  *     new FileAsOutput(new File("/tmp/names.txt"))
@@ -45,7 +45,7 @@
  * <p>Here {@link FileAsOutput} implements {@link Output} and behaves like
  * one, providing write-only access to the encapsulated
  * {@link java.io.File}. The {@link TeeInput} copies the content of the
- * input to the output. The {@link org.cactoos.io.LengthOfInput}
+ * input to the output. The {@link org.cactoos.io.CountOf}
  * calculates the size of the copied data.</p>
  *
  * <p>There is no thread-safety guarantee.

src/main/java/org/cactoos/io/LengthOfInput.java → src/main/java/org/cactoos/io/CountOfInput.java

@@ -38,7 +38,7 @@
  * @version $Id$
  * @since 0.1
  */
-public final class LengthOfInput implements Scalar<Long> {
+public final class CountOfInput implements Scalar<Long> {
 
     /**
      * The input.
@@ -54,7 +54,7 @@ public final class LengthOfInput implements Scalar<Long> {
      * Ctor.
      * @param input The input
      */
-    public LengthOfInput(final Input input) {
+    public CountOfInput(final Input input) {
         // @checkstyle MagicNumber (1 line)
         this(input, 16 << 10);
     }
@@ -64,7 +64,7 @@ public LengthOfInput(final Input input) {
      * @param input The input
      * @param max Buffer size
      */
-    public LengthOfInput(final Input input, final int max) {
+    public CountOfInput(final Input input, final int max) {
         this.source = input;
         this.size = max;
     }

src/main/java/org/cactoos/io/StickyInput.java

@@ -27,6 +27,7 @@
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import org.cactoos.CountOf;
 import org.cactoos.Input;
 import org.cactoos.Scalar;
 import org.cactoos.func.IoCheckedScalar;
@@ -56,7 +57,7 @@ public StickyInput(final Input input) {
         this.cache = new StickyScalar<>(
             () -> {
                 final ByteArrayOutputStream baos = new ByteArrayOutputStream();
-                new LengthOfInput(
+                new CountOf(
                     new TeeInput(input, new OutputStreamAsOutput(baos))
                 ).value();
                 return baos.toByteArray();

src/main/java/org/cactoos/list/LengthOfIterable.java → src/main/java/org/cactoos/list/CountOfIterable.java

@@ -34,7 +34,7 @@
  * @version $Id$
  * @since 0.1
  */
-public final class LengthOfIterable implements Scalar<Integer> {
+public final class CountOfIterable implements Scalar<Integer> {
 
     /**
      * The iterable.
@@ -45,13 +45,13 @@ public final class LengthOfIterable implements Scalar<Integer> {
      * Ctor.
      * @param items The array
      */
-    public LengthOfIterable(final Iterable<?> items) {
+    public CountOfIterable(final Iterable<?> items) {
         this.iterable = items;
     }
 
     @Override
     public Integer value() {
-        return new LengthOfIterator(this.iterable.iterator()).value();
+        return new CountOfIterator(this.iterable.iterator()).value();
     }
 
 }

src/main/java/org/cactoos/list/LengthOfIterator.java → src/main/java/org/cactoos/list/CountOfIterator.java

@@ -35,7 +35,7 @@
  * @version $Id$
  * @since 0.1
  */
-public final class LengthOfIterator implements Scalar<Integer> {
+public final class CountOfIterator implements Scalar<Integer> {
 
     /**
      * The iterator.
@@ -46,7 +46,7 @@ public final class LengthOfIterator implements Scalar<Integer> {
      * Ctor.
      * @param items The iterator
      */
-    public LengthOfIterator(final Iterator<?> items) {
+    public CountOfIterator(final Iterator<?> items) {
         this.iterator = items;
     }
 

src/main/java/org/cactoos/list/ListOf.java

@@ -28,6 +28,7 @@
 import java.util.LinkedList;
 import java.util.List;
 import java.util.ListIterator;
+import org.cactoos.CountOf;
 
 /**
  * Iterable as {@link List}.
@@ -79,7 +80,7 @@ public ListOf(final Iterable<T> src) {
 
     @Override
     public int size() {
-        return new LengthOfIterable(this.iterable).value();
+        return (int) new CountOf(this.iterable).value();
     }
 
     @Override

src/main/java/org/cactoos/list/MapOf.java

@@ -27,6 +27,7 @@
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Set;
+import org.cactoos.CountOf;
 import org.cactoos.Func;
 
 /**
@@ -160,7 +161,7 @@ public MapOf(final Iterable<Map.Entry<X, Y>> list) {
 
     @Override
     public int size() {
-        return new LengthOfIterable(this.entries).value();
+        return (int) new CountOf(this.entries).value();
     }
 
     @Override