1 files changed, 108 insertions, 0 deletions
diff --git a/stdlib/source/library/lux/world/file/extension.lux b/stdlib/source/library/lux/world/file/extension.lux
new file mode 100644
index 000000000..12b6700be
--- /dev/null
+++ b/stdlib/source/library/lux/world/file/extension.lux
@@ -0,0 +1,108 @@
+... https://en.wikipedia.org/wiki/List_of_filename_extensions
+(.require
+ [library
+  [lux (.except)
+   [data
+    [text
+     ["%" \\format]]]
+   [meta
+    [macro
+     ["[0]" template]]]]])
+
+(def .public Extension
+  Text)
+
+(with_template [<ext> <name> <aliases>]
+  [(def .public <name>
+     Extension
+     (%.format "." <ext>))
+
+   (`` (with_template [<alias>]
+         [(def .public <alias> <name>)]
+
+         (,, (template.spliced <aliases>))
+         ))
+   ]
+
+  ... https://en.wikipedia.org/wiki/List_of_filename_extensions_(0%E2%80%939)
+  ["7z" compressed_7z_archive []]
+  
+  ... https://en.wikipedia.org/wiki/List_of_filename_extensions_(A%E2%80%93E)
+  ["a" archive []]
+  ["aac" advanced_audio_coding []]
+  ["agda" agda_source_code []]
+  ["apk" android_application_package []]
+  ["asm" assembler_source_code []]
+
+  ["bin" binary []]
+  ["bz2" bzip2_archive []]
+  ["blend" blender_project []]
+
+  ["c" c_source_code [[c]]]
+  ["cpp" c++_source_code [[c++]]]
+  ["class" java_class []]
+  ["com" dos_program []]
+  ["cs" c#_source_code []]
+  ["css" css []]
+  ["csv" comma_separated_values [[csv]]]
+
+  ["d" d_source_code []]
+  ["dart" dart_source_code []]
+
+  ["el" emacs_lisp_source_code [[emacs_lisp]]]
+  ["elc" compiled_emacs_lisp_code []]
+  ["elf" executable_and_linkable_file []]
+  ["epub" electronic_publication []]
+  ["erl" erlang_source_code [[erlang]]]
+  ["exe" executable_program []]
+
+  ... https://en.wikipedia.org/wiki/List_of_filename_extensions_(F%E2%80%93L)
+  ["flame" apophysis_fractal []]
+
+  ["gpx" gps_exchange_format []]
+  ["gz" gzip_compressed_data []]
+
+  ["har" http_archive_format []]
+  ["h" c_header []]
+  ["html" html []]
+
+  ["iso" optical_disc_file_system []]
+
+  ["jar" java_archive [[jar]]]
+  ["java" java_source_code [[java]]]
+  ["js" javascript_source_code [[javascript] [js]]]
+  ["json" javascript_object_notation [[json]]]
+
+  ["ll" llvm_assembly []]
+  ["lua" lua_source_code [[lua]]]
+  ["lz" lzip_archive []]
+
+  ... https://en.wikipedia.org/wiki/List_of_filename_extensions_(M%E2%80%93R)
+  ["md" markdown []]
+  ["mid" musical_instrument_digital_interface [[midi]]]
+
+  ["o" object_code []]
+  ["ogg" vorbis_audio [[ogg]]]
+
+  ["pdf" portable_document_format [[pdf]]]
+  ["php" php_source_code [[php]]]
+  ["pom" maven_build_configuration []]
+  ["ps" postscript_source_code []]
+  ["py" python_source_code [[python]]]
+
+  ["rb" ruby_source_code [[ruby]]]
+
+  ... https://en.wikipedia.org/wiki/List_of_filename_extensions_(S%E2%80%93Z)
+  ["scm" scheme_source_code [[scheme]]]
+  ["sh" unix_shell_script []]
+  ["sql" structured_query_language [[sql]]]
+  ["svg" scalable_vector_graphics [[svg]]]
+  
+  ["tar" tape_archive [[tar]]]
+  ["tmp" temporary_file []]
+  ["tsv" tab_separated_values []]
+
+  ["yaml" yaml [[yet_another_markup_language] [yaml_ain't_markup_language]]]
+
+  ["zip" zip_archive [[zip]]]
+  )