From 116b0f9c21f0794cfc66187944d33c5e5cc12c01 Mon Sep 17 00:00:00 2001
From: "M. Iqbal Effendi" <iqbaleff214@gmail.com>
Date: Mon, 3 Oct 2022 09:53:30 +0800
Subject: [PATCH 1/5] Feat-Ruby: add crc32 function

---
 ruby/lib/pehape/string/crc32.rb       | 9 +++++++++
 ruby/lib/pehape/string/index.rb       | 1 +
 ruby/spec/pehape/string/crc32_spec.rb | 9 +++++++++
 3 files changed, 19 insertions(+)
 create mode 100644 ruby/lib/pehape/string/crc32.rb
 create mode 100644 ruby/spec/pehape/string/crc32_spec.rb

diff --git a/ruby/lib/pehape/string/crc32.rb b/ruby/lib/pehape/string/crc32.rb
new file mode 100644
index 0000000..adb4fbb
--- /dev/null
+++ b/ruby/lib/pehape/string/crc32.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+require "zlib"
+
+module Pehape
+  def self.crc32(string)
+    Zlib.crc32(string.to_s)
+  end
+end
diff --git a/ruby/lib/pehape/string/index.rb b/ruby/lib/pehape/string/index.rb
index b9f09a9..e39efbd 100644
--- a/ruby/lib/pehape/string/index.rb
+++ b/ruby/lib/pehape/string/index.rb
@@ -7,3 +7,4 @@
 require_relative "strrev"
 require_relative "lcfirst"
 require_relative "ucfirst"
+require_relative "crc32"
diff --git a/ruby/spec/pehape/string/crc32_spec.rb b/ruby/spec/pehape/string/crc32_spec.rb
new file mode 100644
index 0000000..bd952bb
--- /dev/null
+++ b/ruby/spec/pehape/string/crc32_spec.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+RSpec.describe Pehape do
+  describe "crc32" do
+    it "returns the crc32 checksum of string as an integer." do
+      expect(Pehape.crc32("Hello World!")).to eq(472_456_355)
+    end
+  end
+end

From 894425af3a5b676250203f3125f1efd7bd997cd5 Mon Sep 17 00:00:00 2001
From: "M. Iqbal Effendi" <iqbaleff214@gmail.com>
Date: Mon, 3 Oct 2022 13:08:16 +0800
Subject: [PATCH 2/5] Feat-Ruby: add sha1 function

---
 ruby/lib/pehape/string/index.rb      |  1 +
 ruby/lib/pehape/string/sha1.rb       | 10 ++++++++++
 ruby/spec/pehape/string/sha1_spec.rb |  9 +++++++++
 3 files changed, 20 insertions(+)
 create mode 100644 ruby/lib/pehape/string/sha1.rb
 create mode 100644 ruby/spec/pehape/string/sha1_spec.rb

diff --git a/ruby/lib/pehape/string/index.rb b/ruby/lib/pehape/string/index.rb
index e39efbd..85a67d1 100644
--- a/ruby/lib/pehape/string/index.rb
+++ b/ruby/lib/pehape/string/index.rb
@@ -8,3 +8,4 @@
 require_relative "lcfirst"
 require_relative "ucfirst"
 require_relative "crc32"
+require_relative "sha1"
diff --git a/ruby/lib/pehape/string/sha1.rb b/ruby/lib/pehape/string/sha1.rb
new file mode 100644
index 0000000..6447104
--- /dev/null
+++ b/ruby/lib/pehape/string/sha1.rb
@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+require "digest"
+
+module Pehape
+  def self.sha1(string, binary=nil)
+    result = Digest::SHA1.new << string.to_s
+    binary ? result.digest : result.hexdigest
+  end
+end
diff --git a/ruby/spec/pehape/string/sha1_spec.rb b/ruby/spec/pehape/string/sha1_spec.rb
new file mode 100644
index 0000000..4eebb65
--- /dev/null
+++ b/ruby/spec/pehape/string/sha1_spec.rb
@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+RSpec.describe Pehape do
+  describe "sha1" do
+    it "returns the sha1 hash as a string." do
+      expect(Pehape.sha1("Hello World!")).to eq("2ef7bde608ce5404e97d5f042f95f89f1c232871")
+    end
+  end
+end

From 503276534f5b12507cdbb13e58b8ccfecf7ebfdd Mon Sep 17 00:00:00 2001
From: "M. Iqbal Effendi" <iqbaleff214@gmail.com>
Date: Mon, 3 Oct 2022 13:24:29 +0800
Subject: [PATCH 3/5] Feat-Ruby: add sha1_file function

---
 ruby/lib/pehape/string/index.rb           |  1 +
 ruby/lib/pehape/string/sha1_file.rb       | 12 ++++++++++++
 ruby/spec/pehape/string/sha1_file_spec.rb | 15 +++++++++++++++
 3 files changed, 28 insertions(+)
 create mode 100644 ruby/lib/pehape/string/sha1_file.rb
 create mode 100644 ruby/spec/pehape/string/sha1_file_spec.rb

diff --git a/ruby/lib/pehape/string/index.rb b/ruby/lib/pehape/string/index.rb
index 85a67d1..b831d8f 100644
--- a/ruby/lib/pehape/string/index.rb
+++ b/ruby/lib/pehape/string/index.rb
@@ -9,3 +9,4 @@
 require_relative "ucfirst"
 require_relative "crc32"
 require_relative "sha1"
+require_relative "sha1_file"
diff --git a/ruby/lib/pehape/string/sha1_file.rb b/ruby/lib/pehape/string/sha1_file.rb
new file mode 100644
index 0000000..44ac98d
--- /dev/null
+++ b/ruby/lib/pehape/string/sha1_file.rb
@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+require "digest"
+
+module Pehape
+  def self.sha1_file(filename, binary=nil)
+    return false unless File.exist?(filename.to_s)
+
+    result = Digest::SHA1.file(filename.to_s)
+    binary ? result.digest : result.hexdigest
+  end
+end
diff --git a/ruby/spec/pehape/string/sha1_file_spec.rb b/ruby/spec/pehape/string/sha1_file_spec.rb
new file mode 100644
index 0000000..3cbc039
--- /dev/null
+++ b/ruby/spec/pehape/string/sha1_file_spec.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+RSpec.describe Pehape do
+  describe "sha1_file" do
+    it "returns file hash as a string on success." do
+      filename = File.expand_path("./README.md")
+      expect(Pehape.sha1_file(filename)).to eq("64285a71bb456bd05a5466ff7076bf2c377ecd57")
+    end
+
+    it "returns false on fail." do
+      filename = File.expand_path("./robot.txt")
+      expect(Pehape.sha1_file(filename)).to eq(false)
+    end
+  end
+end

From 1a31175478b248c69dfcf6605cbf02491a7835db Mon Sep 17 00:00:00 2001
From: "M. Iqbal Effendi" <iqbaleff214@gmail.com>
Date: Mon, 3 Oct 2022 13:30:03 +0800
Subject: [PATCH 4/5] Feat-Ruby: add md5 function

---
 ruby/lib/pehape/string/index.rb     |  1 +
 ruby/lib/pehape/string/md5.rb       | 10 ++++++++++
 ruby/spec/pehape/string/md5_spec.rb | 10 ++++++++++
 3 files changed, 21 insertions(+)
 create mode 100644 ruby/lib/pehape/string/md5.rb
 create mode 100644 ruby/spec/pehape/string/md5_spec.rb

diff --git a/ruby/lib/pehape/string/index.rb b/ruby/lib/pehape/string/index.rb
index b831d8f..1088d4e 100644
--- a/ruby/lib/pehape/string/index.rb
+++ b/ruby/lib/pehape/string/index.rb
@@ -10,3 +10,4 @@
 require_relative "crc32"
 require_relative "sha1"
 require_relative "sha1_file"
+require_relative "md5"
diff --git a/ruby/lib/pehape/string/md5.rb b/ruby/lib/pehape/string/md5.rb
new file mode 100644
index 0000000..c369067
--- /dev/null
+++ b/ruby/lib/pehape/string/md5.rb
@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+require "digest"
+
+module Pehape
+  def self.md5(string, binary=nil)
+    result = Digest::MD5.new << string.to_s
+    binary ? result.digest : result.hexdigest
+  end
+end
diff --git a/ruby/spec/pehape/string/md5_spec.rb b/ruby/spec/pehape/string/md5_spec.rb
new file mode 100644
index 0000000..d3cd8d3
--- /dev/null
+++ b/ruby/spec/pehape/string/md5_spec.rb
@@ -0,0 +1,10 @@
+# frozen_string_literal: true
+
+RSpec.describe Pehape do
+  describe "md5" do
+    it "returns the hash as a 32-character hexadecimal number." do
+      expect(Pehape.md5("Hello World!")).to eq("ed076287532e86365e841e92bfc50d8c")
+      expect(Pehape.md5("apple")).to eq("1f3870be274f6c49b3e31a0c6728957f")
+    end
+  end
+end

From e3146244055e36a95180815f719b847386d09222 Mon Sep 17 00:00:00 2001
From: "M. Iqbal Effendi" <iqbaleff214@gmail.com>
Date: Mon, 3 Oct 2022 13:33:13 +0800
Subject: [PATCH 5/5] Feat-Ruby: add md5_file function

---
 ruby/lib/pehape/string/index.rb          |  1 +
 ruby/lib/pehape/string/md5_file.rb       | 12 ++++++++++++
 ruby/spec/pehape/string/md5_file_spec.rb | 15 +++++++++++++++
 3 files changed, 28 insertions(+)
 create mode 100644 ruby/lib/pehape/string/md5_file.rb
 create mode 100644 ruby/spec/pehape/string/md5_file_spec.rb

diff --git a/ruby/lib/pehape/string/index.rb b/ruby/lib/pehape/string/index.rb
index 1088d4e..feb0359 100644
--- a/ruby/lib/pehape/string/index.rb
+++ b/ruby/lib/pehape/string/index.rb
@@ -11,3 +11,4 @@
 require_relative "sha1"
 require_relative "sha1_file"
 require_relative "md5"
+require_relative "md5_file"
diff --git a/ruby/lib/pehape/string/md5_file.rb b/ruby/lib/pehape/string/md5_file.rb
new file mode 100644
index 0000000..5e917dd
--- /dev/null
+++ b/ruby/lib/pehape/string/md5_file.rb
@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+require "digest"
+
+module Pehape
+  def self.md5_file(filename, binary=nil)
+    return false unless File.exist?(filename.to_s)
+
+    result = Digest::MD5.file(filename.to_s)
+    binary ? result.digest : result.hexdigest
+  end
+end
diff --git a/ruby/spec/pehape/string/md5_file_spec.rb b/ruby/spec/pehape/string/md5_file_spec.rb
new file mode 100644
index 0000000..9a4a5ef
--- /dev/null
+++ b/ruby/spec/pehape/string/md5_file_spec.rb
@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+RSpec.describe Pehape do
+  describe "md5_file" do
+    it "returns a string on success." do
+      filename = File.expand_path("./README.md")
+      expect(Pehape.md5_file(filename)).to eq("6cccfa61af5a5310f08f3fabcbe230ae")
+    end
+
+    it "returns false on fail." do
+      filename = File.expand_path("./robot.txt")
+      expect(Pehape.md5_file(filename)).to eq(false)
+    end
+  end
+end