From ee5c3baea71f1cc1664b962fa444bce10a7f1a7d Mon Sep 17 00:00:00 2001
From: Shekhar Gulati <shekhargulati84@gmail.com>
Date: Sat, 21 May 2016 22:25:10 +0530
Subject: [PATCH] Fixed #24. Added support for `replace` function

---
 src/main/java/strman/Strman.java     | 18 ++++++++++++++++++
 src/test/java/strman/StrmanTest.java | 12 ++++++++++++
 2 files changed, 30 insertions(+)

diff --git a/src/main/java/strman/Strman.java b/src/main/java/strman/Strman.java
index a9ff6c6..bc9b772 100644
--- a/src/main/java/strman/Strman.java
+++ b/src/main/java/strman/Strman.java
@@ -756,6 +756,24 @@ public abstract class Strman {
         return Stream.generate(() -> value).limit(multiplier).collect(joining());
     }
 
+    /**
+     * Replace all occurrences of 'search' value to 'newvalue'. Uses String replace method.
+     *
+     * @param value         The input
+     * @param search        The String to search
+     * @param newValue      The String to replace
+     * @param caseSensitive whether search should be case sensitive or not
+     * @return String replaced with 'newvalue'.
+     */
+    public static String replace(final String value, final String search, final String newValue, final boolean caseSensitive) {
+        validate(value, NULL_STRING_PREDICATE, NULL_STRING_MSG_SUPPLIER);
+        validate(search, NULL_STRING_PREDICATE, NULL_STRING_MSG_SUPPLIER);
+        if (caseSensitive) {
+            return value.replace(search, newValue);
+        }
+        return value.toLowerCase().replace(search.toLowerCase(), newValue);
+    }
+
     public static String decode(final String value, final int digits, final int radix) {
         validate(value, NULL_STRING_PREDICATE, NULL_STRING_MSG_SUPPLIER);
         return Arrays
diff --git a/src/test/java/strman/StrmanTest.java b/src/test/java/strman/StrmanTest.java
index e826fef..1d425b0 100644
--- a/src/test/java/strman/StrmanTest.java
+++ b/src/test/java/strman/StrmanTest.java
@@ -580,4 +580,16 @@ public class StrmanTest {
         assertThat(repeat("1", 4), equalTo("1111"));
         assertThat(repeat("1", 5), equalTo("11111"));
     }
+
+    @Test
+    public void replace_shouldReplaceAllOccurrencesOfString() throws Exception {
+        assertThat(replace("foo bar", "foo", "bar", true), equalTo("bar bar"));
+        assertThat(replace("foo bar foo", "foo", "bar", true), equalTo("bar bar bar"));
+    }
+
+    @Test
+    public void replace_shouldReplaceAllOccurrencesOfStringCaseSensitive() throws Exception {
+        assertThat(replace("FOO bar", "foo", "bar", false), equalTo("bar bar"));
+        assertThat(replace("FOO bar foo", "foo", "bar", false), equalTo("bar bar bar"));
+    }
 }
\ No newline at end of file