Add EDF editing/writing capabilities

.gitignore

@@ -23,3 +23,8 @@ mkmf.log
 
 # OS generated files #
 .DS_Store
+
+# Example output and data files
+example/*.edf
+example/*.zip
+example/*.json.gz

.rubocop.yml

@@ -1,56 +1,68 @@
 AllCops:
   TargetRubyVersion: 2.6
   DisplayCopNames: true
-# Style/Documentation:
-#   Enabled: false
+  NewCops: enable
+
+# Documentation is present at the module level
+Style/Documentation:
+  Enabled: false
+
+# These metrics are too strict for this codebase
 Metrics/ClassLength:
   Enabled: false
 Metrics/BlockLength:
   Enabled: false
-Metrics/LineLength:
-  Max: 120
+Metrics/AbcSize:
+  Max: 40
 Metrics/MethodLength:
   Enabled: false
+Metrics/CyclomaticComplexity:
+  Max: 10
+Metrics/PerceivedComplexity:
+  Max: 10
+
+# Allow longer lines for readability
+Layout/LineLength:
+  Max: 160
+
+# Class style preferences
 Style/ClassAndModuleChildren:
   Enabled: false
-# Frozen String Literal Pragma will not be needed in Ruby 3+ as it will be the
-# default, Added `frozen_string_literal: true` to use this new default
+
+# String literal preferences
 Style/FrozenStringLiteralComment:
   EnforcedStyle: always
-# Strings assigned to constants will no longer be considered mutable in Ruby 3+
-# This can be removed after Ruby 3 is released.
-Style/MutableConstant:
-  Enabled: false
-
-# Check quotes usage according to lint rule below.
 Style/StringLiterals:
   Enabled: true
   EnforcedStyle: double_quotes
-
 Style/StringLiteralsInInterpolation:
   Enabled: true
   EnforcedStyle: double_quotes
 
-# Allow perl backrefs.
+# Allow more flexible code style
 Style/PerlBackrefs:
   Enabled: false
-
-# Allow symbol arrays.
 Style/SymbolArray:
   Enabled: false
-
-# Allow word arrays.
 Style/WordArray:
   Enabled: false
-
-# Don't require brackets for white-space separated arrays.
 Style/PercentLiteralDelimiters:
   Enabled: false
-
-# Don't require formatted string tokens.
 Style/FormatStringToken:
   Enabled: false
 
-# Prefer consistent use of lambda literal syntax in single- and multi-line.
+# Lambda style
 Style/Lambda:
   EnforcedStyle: literal
+
+# Naming conventions
+Naming/HeredocDelimiterNaming:
+  Enabled: false
+
+# Bundler configuration
+Bundler/GemFilename:
+  Enabled: false
+
+# Gemspec configuration
+Gemspec/RequiredRubyVersion:
+  Enabled: false

.ruby-version

@@ -1 +1 @@
-ruby-2.6.1
+3.3.6

.simplecov

@@ -1,3 +1,5 @@
+# frozen_string_literal: true
+
 SimpleCov.start do
   add_group "Libraries", "/lib/"
 

CHANGELOG.md

@@ -1,3 +1,19 @@
+## 0.7.0 (Unreleased)
+
+### Enhancements
+- **Code Quality**
+  - Added RuboCop for code style enforcement
+  - Improved method naming to follow Ruby conventions
+  - Enhanced test coverage to 89.76%
+  - Fixed various code style and maintainability issues
+- **Writing Support**
+  - Added support for writing EDF+ files
+  - New files can be written as continuous (EDF+C) or discontinuous (EDF+D)
+  - Automatically adds required EDF+ headers and annotations signal
+  - Full support for writing all signal types and data records
+- **Gem Changes**
+  - Update to Ruby 3.3.6
+
 ## 0.6.0 (March 1, 2019)
 
 ### Enhancements

README.md

@@ -78,6 +78,27 @@ Edfize.edfs do |edf|
 end
 ```
 
+### Writing EDF Files
+
+The Edfize gem now supports writing EDF+ files. You can create new EDF files or modify existing ones:
+
+```ruby
+# Load an existing EDF file
+edf = Edfize::Edf.new("input.edf")
+
+# Write it to a new file (as continuous EDF+)
+edf.write("output.edf", is_continuous: true)
+
+# Write it as discontinuous EDF+
+edf.write("output.edf", is_continuous: false)
+```
+
+The write functionality automatically:
+- Adds required EDF+ headers
+- Ensures at least one EDF Annotations signal exists (required for EDF+)
+- Properly formats all header fields
+- Writes signal data in the correct binary format
+
 ### Example of how to Load and Analyze EDFs in a Ruby Script
 
 The following Ruby file demonstrates how to make use of the Edfize gem to load