feat(filetype): Snakefile(s) from SnakeMake

rc/filetype/snakefile.kak

@@ -0,0 +1,80 @@
+# https://snakemake.github.io
+# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
+# SnakeMake is a pipeline/workflow management system.
+
+# Detection
+# ‾‾‾‾‾‾‾‾‾
+
+hook global BufCreate .*\.([Ss]nake[Ff]ile) %{
+    set-option buffer filetype snakefile
+}
+
+# Initialization
+# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
+
+hook global WinSetOption filetype=snakefile %{
+    require-module snakefile
+
+    hook window ModeChange pop:insert:.* -group snakefile-trim-indent snakefile-trim-indent
+    hook window InsertChar \n -group snakefile-insert snakefile-insert-on-new-line
+    hook window InsertChar \n -group snakefile-indent snakefile-indent-on-new-line
+    hook -once -always window WinSetOption filetype=.* %{ remove-hooks window snakefile-.+ }
+}
+
+hook -group snakefile-highlight global WinSetOption filetype=snakefile %{
+    add-highlighter window/snakefile ref snakefile
+    hook -once -always window WinSetOption filetype=.* %{ remove-highlighter window/snakefile }
+}
+
+
+provide-module snakefile %{
+
+require-module python
+
+# Highlighters
+# ‾‾‾‾‾‾‾‾‾‾‾‾
+
+add-highlighter shared/snakefile regions
+add-highlighter shared/snakefile/comment  region '(?:^| )#' $   fill comment
+
+add-highlighter shared/snakefile/code  default-region group
+add-highlighter shared/snakefile/code/ regex \bconfig\b    0:builtin
+add-highlighter shared/snakefile/code/ regex \bwildcards\b 0:builtin
+add-highlighter shared/snakefile/code/ regex ^(\w+): 1:attribute
+add-highlighter shared/snakefile/code/ regex ^(rule)\s+(\w+): 1:keyword 2:module
+add-highlighter shared/snakefile/code/ regex ^\s{4}(\w+):   1:attribute
+
+add-highlighter shared/snakefile/section  region ^\s{8} \n  group
+add-highlighter shared/snakefile/section/ ref python
+add-highlighter shared/snakefile/section/f_string regex \{.*?\} 0:value
+add-highlighter shared/snakefile/section/keywords regex \bconfig\b    0:builtin  # FIXME
+add-highlighter shared/snakefile/section/keywords regex \bwildcards\b 0:builtin  # FIXME
+
+# Commands
+# ‾‾‾‾‾‾‾‾
+
+define-command -hidden snakefile-trim-indent %{
+    # remove trailing white spaces
+    try %{ execute-keys -draft -itersel x s \h+$ <ret> d }
+}
+
+define-command -hidden snakefile-insert-on-new-line %{
+    evaluate-commands -draft -itersel %{
+        # copy '#' comment prefix and following white spaces
+        try %{ execute-keys -draft k x s ^\h*\K#\h* <ret> y gh j P }
+    }
+}
+
+define-command -hidden snakefile-indent-on-new-line %{
+    evaluate-commands -draft -itersel %{
+        # preserve previous line indent
+        try %{ execute-keys -draft <semicolon> K <a-&> }
+        # filter previous line
+        try %{ execute-keys -draft k : snakefile-trim-indent <ret> }
+        # indent after :
+        try %{ execute-keys -draft , k x <a-k> :$ <ret> j <a-gt> }
+    }
+}
+
+}
+