Create string_replace_all function

This function replace all chars to a defined string.
The `string_replace` function was changed to pass an empty value as
"replacement".

README.md

@@ -9,6 +9,7 @@ Strings handler written in Bash.
 * [string_repeat][]
 * [string_scape][]
 * [string_replace][]
+* [string_replace_all][]
 * [string_dash_camelcase][]
 * [string_separator_camelcase][]
 * [string_underscore_camelcase][]
@@ -106,6 +107,19 @@ Using REGEX:
 string_replace -t regex "[^a-z]" "" "That's my boy." # hatsmyboy
 ````
 
+### string_replace_all
+Replaces all chars to a defined string
+
+Passing string as argument:
+````bash
+string_replace_all "*" "p4ssw0rd" # ********
+````
+
+Using pipes
+````bash
+echo "p4ssw0rd" | string_replace_all "*" # ********
+````
+
 ### string_dash_camelcase
 Convert dash to camelcase.
 
@@ -190,6 +204,7 @@ echo "thisIsAString" | string_camelcase_underscore # this_Is_A_String
 [string_repeat]: #string_repeat
 [string_scape]: #string_scape
 [string_replace]: #string_replace
+[string_replace_all]: #string_replace_all
 [string_dash_camelcase]: #string_dash_camelcase
 [string_separator_camelcase]: #string_separator_camelcase
 [string_underscore_camelcase]: #string_underscore_camelcase

src/replace.bash

@@ -15,8 +15,6 @@ string_replace()
 
     if [[ -z "${1}" ]]; then
         return 1
-    elif [[ -z "${2}" ]]; then
-        return 2
     fi
 
     case "${type}" in
@@ -29,7 +27,7 @@ string_replace()
             replace="${2}"
         ;;
         *)
-            return 3
+            return 2
         ;;
     esac
 

src/replace/all.bash

@@ -0,0 +1,13 @@
+# @depends string_escape
+# @depends string_replace
+string_replace_all()
+{
+    local replacement="${1}"
+    local string="${2}"
+
+    if [[ -z "${string}" ]] && [ ! -t 0 ]; then
+        string=$(cat /dev/stdin)
+    fi
+
+    string_replace --type regex "." "$(echo "${replacement}" | string_escape --type regex)" "${string}"
+}

tests/replace.bats

@@ -8,16 +8,10 @@ load ../source
     [ "${status}" -eq 1 ]
 }
 
-@test "Finish with 2 when passing no 'replace' argument" {
-    run string_replace "search"
-
-    [ "${status}" -eq 2 ]
-}
-
-@test "Finish with 3 when passing an invalid '--type' option value" {
+@test "Finish with 2 when passing an invalid '--type' option value" {
     run string_replace -t something "search" "replace" "String to search."
 
-    [ "${status}" -eq 3 ]
+    [ "${status}" -eq 2 ]
 }
 
 @test "Replace a using plain text" {

tests/replace/all.bats

@@ -0,0 +1,21 @@
+#!/usr/bin/env bats
+
+load ../../source
+
+@test "Replace all chars to defined argument" {
+    run string_replace_all '*' 'Henrique Moody'
+
+    [[ "${output}" = '**************' ]]
+}
+
+@test "Replace all chars to defined argument in a pipe" {
+    output=$(echo "Henrique Moody" | string_replace_all '*')
+
+    [[ "${output}" = '**************' ]]
+}
+
+@test "Replace all chars to defined argument in a pipe even if it if empty" {
+    output=$(echo "Henrique Moody" | string_replace_all)
+
+    [[ -z "${output}" ]]
+}