Initial import

.editorconfig

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+[*.{props,targets}]
+indent_style = tab
+indent_size = 4
+charset = utf-8
+
+[*.{csproj}]
+indent_style = space
+indent_size = 2
+charset = utf-8
+
+# C# files
+[*.cs]
+max_line_length = 120
+charset = utf-8
+
+#### Core EditorConfig Options ####
+
+# Indentation and spacing
+indent_style = tab
+indent_size = 4
+tab_width = 4
+
+# New line preferences
+end_of_line = lf
+insert_final_newline = true
+
+#### .NET Coding Conventions ####
+
+# Organize usings
+dotnet_separate_import_directive_groups = false
+dotnet_sort_system_directives_first = true
+
+# this. and Me. preferences
+dotnet_style_qualification_for_event = false:silent
+dotnet_style_qualification_for_field = false:silent
+dotnet_style_qualification_for_method = false:silent
+dotnet_style_qualification_for_property = false:silent
+
+# Language keywords vs BCL types preferences
+dotnet_style_predefined_type_for_locals_parameters_members = true:silent
+dotnet_style_predefined_type_for_member_access = true:silent
+
+# Parentheses preferences
+dotnet_style_parentheses_in_arithmetic_binary_operators = always_for_clarity:silent
+dotnet_style_parentheses_in_other_binary_operators = always_for_clarity:silent
+dotnet_style_parentheses_in_other_operators = never_if_unnecessary:silent
+dotnet_style_parentheses_in_relational_binary_operators = always_for_clarity:silent
+
+# Modifier preferences
+dotnet_style_require_accessibility_modifiers = omit_if_default:suggestion
+
+# Expression-level preferences
+dotnet_style_coalesce_expression = true:suggestion
+dotnet_style_collection_initializer = true:suggestion
+dotnet_style_explicit_tuple_names = true:suggestion
+dotnet_style_null_propagation = true:suggestion
+dotnet_style_object_initializer = true:suggestion
+dotnet_style_prefer_auto_properties = true:silent
+dotnet_style_prefer_compound_assignment = true:suggestion
+dotnet_style_prefer_conditional_expression_over_assignment = true:silent
+dotnet_style_prefer_conditional_expression_over_return = true:silent
+dotnet_style_prefer_inferred_anonymous_type_member_names = true:suggestion
+dotnet_style_prefer_inferred_tuple_names = true:suggestion
+dotnet_style_prefer_is_null_check_over_reference_equality_method = true:suggestion
+dotnet_style_prefer_simplified_interpolation = true:suggestion
+
+# Field preferences
+dotnet_style_readonly_field = true:suggestion
+
+# Parameter preferences
+dotnet_code_quality_unused_parameters = all:suggestion
+
+#### C# Coding Conventions ####
+
+# var preferences
+csharp_style_var_elsewhere = false:none
+csharp_style_var_for_built_in_types = false:none
+csharp_style_var_when_type_is_apparent = false:suggestion
+
+# Expression-bodied members
+csharp_style_expression_bodied_accessors = true:none
+csharp_style_expression_bodied_constructors = false:none
+csharp_style_expression_bodied_indexers = true:none
+csharp_style_expression_bodied_lambdas = true:none
+csharp_style_expression_bodied_local_functions = false:none
+csharp_style_expression_bodied_methods = false:none
+csharp_style_expression_bodied_operators = false:none
+csharp_style_expression_bodied_properties = true:none
+
+# Pattern matching preferences
+csharp_style_pattern_matching_over_as_with_null_check = true:suggestion
+csharp_style_pattern_matching_over_is_with_cast_check = true:suggestion
+csharp_style_prefer_switch_expression = true:silent
+
+# Null-checking preferences
+csharp_style_conditional_delegate_call = true:suggestion
+
+# Modifier preferences
+csharp_prefer_static_local_function = true:suggestion
+csharp_preferred_modifier_order = public,private,protected,internal,static,extern,new,virtual,abstract,sealed,override,readonly,unsafe,volatile,async:silent
+
+# Code-block preferences
+csharp_prefer_braces = when_multiline:suggestion
+csharp_prefer_simple_using_statement = true:suggestion
+
+# Expression-level preferences
+csharp_prefer_simple_default_expression = true:suggestion
+csharp_style_deconstructed_variable_declaration = true:suggestion
+csharp_style_inlined_variable_declaration = true:suggestion
+csharp_style_pattern_local_over_anonymous_function = true:suggestion
+csharp_style_prefer_index_operator = true:suggestion
+csharp_style_prefer_range_operator = true:suggestion
+csharp_style_throw_expression = true:suggestion
+csharp_style_unused_value_assignment_preference = discard_variable:suggestion
+csharp_style_unused_value_expression_statement_preference = discard_variable:silent
+
+# 'using' directive preferences
+csharp_using_directive_placement = outside_namespace:suggestion
+
+#### C# Formatting Rules ####
+
+# New line preferences
+csharp_new_line_before_catch = false
+csharp_new_line_before_else = false
+csharp_new_line_before_finally = false
+csharp_new_line_before_members_in_anonymous_types = true
+csharp_new_line_before_members_in_object_initializers = true
+csharp_new_line_before_open_brace = anonymous_methods,methods
+csharp_new_line_between_query_expression_clauses = true
+
+# Indentation preferences
+csharp_indent_block_contents = true
+csharp_indent_braces = false
+csharp_indent_case_contents = true
+csharp_indent_case_contents_when_block = false
+csharp_indent_labels = one_less_than_current
+csharp_indent_switch_labels = false
+
+# Space preferences
+csharp_space_after_cast = true
+csharp_space_after_colon_in_inheritance_clause = true
+csharp_space_after_comma = true
+csharp_space_after_dot = false
+csharp_space_after_keywords_in_control_flow_statements = true
+csharp_space_after_semicolon_in_for_statement = true
+csharp_space_around_binary_operators = before_and_after
+csharp_space_around_declaration_statements = false
+csharp_space_before_colon_in_inheritance_clause = true
+csharp_space_before_comma = false
+csharp_space_before_dot = false
+csharp_space_before_open_square_brackets = true
+csharp_space_before_semicolon_in_for_statement = false
+csharp_space_between_empty_square_brackets = false
+csharp_space_between_method_call_empty_parameter_list_parentheses = false
+csharp_space_between_method_call_name_and_opening_parenthesis = true
+csharp_space_between_method_call_parameter_list_parentheses = false
+csharp_space_between_method_declaration_empty_parameter_list_parentheses = false
+csharp_space_between_method_declaration_name_and_open_parenthesis = true
+csharp_space_between_method_declaration_parameter_list_parentheses = false
+csharp_space_between_parentheses = false
+csharp_space_between_square_brackets = false
+
+# Wrapping preferences
+csharp_preserve_single_line_blocks = true
+csharp_preserve_single_line_statements = true
+
+#### Naming styles ####
+
+# Naming rules
+
+dotnet_naming_rule.interface_should_be_begins_with_i.severity = suggestion
+dotnet_naming_rule.interface_should_be_begins_with_i.symbols = interface
+dotnet_naming_rule.interface_should_be_begins_with_i.style = begins_with_i
+
+dotnet_naming_rule.types_should_be_pascalcase.severity = suggestion
+dotnet_naming_rule.types_should_be_pascalcase.symbols = types
+dotnet_naming_rule.types_should_be_pascalcase.style = pascalcase
+
+dotnet_naming_rule.non_field_members_should_be_pascalcase.severity = suggestion
+dotnet_naming_rule.non_field_members_should_be_pascalcase.symbols = non_field_members
+dotnet_naming_rule.non_field_members_should_be_pascalcase.style = pascalcase
+
+dotnet_naming_rule.private_or_internal_field_should_be_camelcase.severity = suggestion
+dotnet_naming_rule.private_or_internal_field_should_be_camelcase.symbols = private_or_internal_field
+dotnet_naming_rule.private_or_internal_field_should_be_camelcase.style = camelcase
+
+# Symbol specifications
+
+dotnet_naming_symbols.interface.applicable_kinds = interface
+dotnet_naming_symbols.interface.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
+dotnet_naming_symbols.interface.required_modifiers = 
+
+dotnet_naming_symbols.private_or_internal_field.applicable_kinds = field
+dotnet_naming_symbols.private_or_internal_field.applicable_accessibilities = internal, private, private_protected
+dotnet_naming_symbols.private_or_internal_field.required_modifiers = 
+
+dotnet_naming_symbols.types.applicable_kinds = class, struct, interface, enum
+dotnet_naming_symbols.types.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
+dotnet_naming_symbols.types.required_modifiers = 
+
+dotnet_naming_symbols.non_field_members.applicable_kinds = property, event, method
+dotnet_naming_symbols.non_field_members.applicable_accessibilities = public, internal, private, protected, protected_internal, private_protected
+dotnet_naming_symbols.non_field_members.required_modifiers = 
+
+# Naming styles
+
+dotnet_naming_style.pascalcase.required_prefix = 
+dotnet_naming_style.pascalcase.required_suffix = 
+dotnet_naming_style.pascalcase.word_separator = 
+dotnet_naming_style.pascalcase.capitalization = pascal_case
+
+dotnet_naming_style.begins_with_i.required_prefix = I
+dotnet_naming_style.begins_with_i.required_suffix = 
+dotnet_naming_style.begins_with_i.word_separator = 
+dotnet_naming_style.begins_with_i.capitalization = pascal_case
+
+dotnet_naming_style.camelcase.required_prefix = 
+dotnet_naming_style.camelcase.required_suffix = 
+dotnet_naming_style.camelcase.word_separator = 
+dotnet_naming_style.camelcase.capitalization = camel_case
+
+# generated code from the project
+[*.g.cs]
+generated_code = true
+dotnet_diagnostic.BI1234.severity = silent

.gitignore

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+.DS_Store
+bin/
+obj/
+.vscode/

ChangeLog.md

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+# ChangeLog
+
+## 2.0.0 (7 Feb 2022)
+
+### Features
+- Compare file sizes inside app bundle or directories
+- Export report to markdown (files or gists)
+- Use from the command-line or invoke the text user interface

ColumnStyles.cs

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+using Terminal.Gui;
+
+namespace AppCompare;
+
+public static class ColumnStyles {
+
+	public static readonly TableView.ColumnStyle FileInfoLengthNumber = new () {
+		Alignment = TextAlignment.Right,
+		RepresentationGetter = (object o) => {
+			(FileInfo? file, long length) = ((FileInfo?, long)) o;
+			if ((length == 0) || (file is not null && file.Attributes.HasFlag (FileAttributes.ReparsePoint)))
+				return "";
+			return length.ToString ("N0");
+		},
+	};
+
+	public static readonly TableView.ColumnStyle LongNumber = new () {
+		Alignment = TextAlignment.Right,
+		RepresentationGetter = (object o) => {
+			var value = (long) o;
+			return value == 0 ? "" : value.ToString ("N0");
+		},
+	};
+
+	public static readonly TableView.ColumnStyle Percentage = new () {
+		Alignment = TextAlignment.Right,
+		RepresentationGetter = (object o) => {
+			var value = (double) o;
+			return Double.IsNaN (value) ? "" : value.ToString ("P1");
+		},
+	};
+}

CompareTableView.cs

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+using Terminal.Gui;
+
+namespace AppCompare;
+
+class CompareTableView : TableView {
+
+	public CompareTableView ()
+	{
+		FullRowSelect = true;
+		Style.AlwaysShowHeaders = true;
+	}
+
+	public void Refresh ()
+	{
+		var columns = Table.Columns;
+		// this gets lost when we re-assign a (sorted) data table
+		Style.ColumnStyles.Add (columns [1], ColumnStyles.FileInfoLengthNumber);
+		Style.ColumnStyles.Add (columns [2], ColumnStyles.FileInfoLengthNumber);
+		Style.ColumnStyles.Add (columns [3], ColumnStyles.LongNumber);
+		Style.ColumnStyles.Add (columns [4], ColumnStyles.Percentage);
+	}
+}