From ac2b9e7ddf793b4c1de94e8296f6c801fcd925f5 Mon Sep 17 00:00:00 2001
From: Dylan Araps <dylan.araps@gmail.com>
Date: Fri, 15 Jun 2018 08:43:35 +1000
Subject: [PATCH] Added more string replacements

---
 README.md | 48 ++++++++++++++++++++++++++++++++++++++++++------
 test.sh   | 12 ++++++++++++
 2 files changed, 54 insertions(+), 6 deletions(-)

diff --git a/README.md b/README.md
index a0fd281..a268898 100644
--- a/README.md
+++ b/README.md
@@ -43,8 +43,10 @@ scripts and not full blown utilities.
     * [Change a string to lowercase.](#change-a-string-to-lowercase)
     * [Change a string to uppercase.](#change-a-string-to-uppercase)
     * [Trim quotes from a string.](#trim-quotes-from-a-string)
-    * [Strip characters from start of string.](#strip-characters-from-start-of-string)
-    * [Strip characters from end of string.](#strip-characters-from-end-of-string)
+    * [Strip all instances of pattern from string.](#strip-all-instances-of-pattern-from-string)
+    * [Strip first occurrence of pattern from string.](#strip-first-occurrence-of-pattern-from-string)
+    * [Strip pattern from start of string.](#strip-pattern-from-start-of-string)
+    * [Strip pattern from end of string.](#strip-pattern-from-end-of-string)
 * [Variables](#variables)
     * [Assign and access a variable using a variable.](#assign-and-access-a-variable-using-a-variable)
 * [Arrays](#arrays)
@@ -213,20 +215,54 @@ trim_quotes() {
 }
 ```
 
-### Strip characters from start of string.
+### Strip all instances of pattern from string.
+
+```sh
+strip_all() {
+    # Usage: strip_all "string" "pattern"
+    printf '%s\n' "${1//$2}"
+}
+
+# Examples:
+
+# Output: "Th Qck Brwn Fx"
+: strip_all "The Quick Brown Fox" "[aeiou]"
+
+# Output: "TheQuickBrownFox"
+: strip_all "The Quick Brown Fox" "[[:space:]]"
+```
+
+### Strip first occurrence of pattern from string.
+
+```sh
+strip() {
+    # Usage: strip "string" "pattern"
+    printf '%s\n' "${1/$2}"
+}
+
+# Examples:
+
+# Output: "Th Quick Brown Fox"
+: strip_all "The Quick Brown Fox" "[aeiou]"
+
+# Output: "TheQuick Brown Fox"
+: strip_all "The Quick Brown Fox" "[[:space:]]"
+```
+
+### Strip pattern from start of string.
 
 ```sh
 lstrip() {
-    # Usage: lstrip "string" "chars to remove"
+    # Usage: lstrip "string" "pattern"
     printf '%s\n' "${1##$2}"
 }
 ```
 
-### Strip characters from end of string.
+### Strip pattern from end of string.
 
 ```sh
 rstrip() {
-    # Usage: rstrip "string" "chars to remove"
+    # Usage: rstrip "string" "pattern"
     printf '%s\n' "${1%%$2}"
 }
 ```
diff --git a/test.sh b/test.sh
index 4a92ad7..5d114b0 100755
--- a/test.sh
+++ b/test.sh
@@ -32,6 +32,16 @@ test_trim_quotes() {
     assert_equals "$result" "test string"
 }
 
+test_strip_all() {
+    result="$(strip_all "The Quick Brown Fox" "[aeiou]")"
+    assert_equals "$result" "Th Qck Brwn Fx"
+}
+
+test_strip() {
+    result="$(strip "The Quick Brown Fox" "[aeiou]")"
+    assert_equals "$result" "Th Quick Brown Fox"
+}
+
 test_lstrip() {
     result="$(lstrip "!:IHello" "!:I")"
     assert_equals "$result" "Hello"
@@ -139,6 +149,8 @@ main() {
     test_lower
     test_upper
     test_trim_quotes
+    test_strip_all
+    test_strip
     test_lstrip
     test_rstrip
     test_reverse_array