feat(ui): feline -> homebrew statusline

9 files changed, 806 insertions, 127 deletions

diff --git a/LICENSES/feline.md b/LICENSES/feline.md
new file mode 100644
index 0000000..2fb2e74
--- /dev/null
+++ b/LICENSES/feline.md
@@ -0,0 +1,675 @@
+### GNU GENERAL PUBLIC LICENSE
+
+Version 3, 29 June 2007
+
+Copyright (C) 2007 Free Software Foundation, Inc.
+<https://fsf.org/>
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+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
+ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
+NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
+LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
+TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
+PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+
+#### 17. Interpretation of Sections 15 and 16.
+
+If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+END OF TERMS AND CONDITIONS
+
+### How to Apply These Terms to Your New Programs
+
+If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these
+terms.
+
+To do so, attach the following notices to the program. It is safest to
+attach them to the start of each source file to most effectively state
+the exclusion of warranty; and each file should have at least the
+"copyright" line and a pointer to where the full notice is found.
+
+        <one line to give the program's name and a brief idea of what it does.>
+        Copyright (C) <year>  <name of author>
+
+        This program is free software: you can redistribute it and/or modify
+        it under the terms of the GNU General Public License as published by
+        the Free Software Foundation, either version 3 of the License, or
+        (at your option) any later version.
+
+        This program is distributed in the hope that it will be useful,
+        but WITHOUT ANY WARRANTY; without even the implied warranty of
+        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+        GNU General Public License for more details.
+
+        You should have received a copy of the GNU General Public License
+        along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper
+mail.
+
+If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+        <program>  Copyright (C) <year>  <name of author>
+        This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+        This is free software, and you are welcome to redistribute it
+        under certain conditions; type `show c' for details.
+
+The hypothetical commands \`show w' and \`show c' should show the
+appropriate parts of the General Public License. Of course, your
+program's commands might be different; for a GUI interface, you would
+use an "about box".
+
+You should also get your employer (if you work as a programmer) or
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary. For more information on this, and how to apply and follow
+the GNU GPL, see <https://www.gnu.org/licenses/>.
+
+The GNU General Public License does not permit incorporating your
+program into proprietary programs. If your program is a subroutine
+library, you may consider it more useful to permit linking proprietary
+applications with the library. If this is what you want to do, use the
+GNU Lesser General Public License instead of this License. But first,
+please read <https://www.gnu.org/licenses/why-not-lgpl.html>.
diff --git a/fnl/nvrc/colors.fnl b/fnl/nvrc/colors.fnl
index 074d870..bfc3ebf 100644
--- a/fnl/nvrc/colors.fnl
+++ b/fnl/nvrc/colors.fnl
@@ -25,6 +25,19 @@
   (import-macros {: highlight! : link!} :nvrc.macro.color)
   (vim.cmd (.. "colorscheme " colorscheme))
 
+  ; Statusline
+  (highlight! :StatusLine {:fg (. colors :fg) :bg (. colors :bg)})
+  (highlight! :StatusLineNC {:fg (. colors :grey) :bg (. colors :black) :underline true})
+  (highlight! :StatusLinePad {:fg (. colors :skyblue) :bg (. colors :bg)})
+  (highlight! :StatusLineAccent {:fg (. colors :green) :bg (. colors :bg)})
+  (highlight! :StatusLineInsertAccent {:fg (. colors :red) :bg (. colors :bg)})
+  (highlight! :StatusLineVisualAccent {:fg (. colors :yellow) :bg (. colors :bg)})
+  (highlight! :StatusLineReplaceAccent {:fg (. colors :violet) :bg (. colors :bg)})
+  (highlight! :StatusLineCmdLineAccent {:fg (. colors :green) :bg (. colors :bg)})
+  (highlight! :StatusLineTerminalAccent {:fg (. colors :skyblue) :bg (. colors :bg)})
+  (highlight! :StatusLineFile {:fg (. colors :orange) :bg (. colors :bg) :bold true})
+  (highlight! :StatusLineFileData {:fg (. colors :magenta) :bg (. colors :bg) :bold true})
+
   ; Buffer
   (highlight! :EndOfBuffer {:fg (. colors :bg)})
   (highlight! :FloatBorder {:fg (. colors :blue)})
@@ -40,21 +53,15 @@
   (highlight! :CmpItemKind {:fg (. colors :fg)})
   (highlight! :CmpItemMenu {:fg (. colors :fg)})
 
-  ; Misc
-  (highlight! :StatusLine {:bg (. colors :bg)})
-  (highlight! :StatusLineNC {:fg (. colors :grey) :bg (. colors :black) :underline true})
-  (highlight! :TabLine {:fg (. colors :fg) :bg (. colors :mgrey)})
-  (highlight! :TabLineFill {:fg (. colors :fg) :bg (. colors :bg)})
-  (highlight! :TabLineSel {:fg (. colors :fg) :bg (. colors :grey2)})
-  (highlight! :LineNr {:fg (. colors :grey)})
-  (highlight! :NvimInternalError {:fg (. colors :red)})
-  (highlight! :VertSplit {:fg (. colors :grey2)})
-
   ; LSP
   (highlight! :DiagnosticError {:fg (. colors :red)})
   (highlight! :DiagnosticWarn {:fg (. colors :yellow)})
-  (highlight! :DiagnosticInformation {:fg (. colors :green)})
+  (highlight! :DiagnosticInfo {:fg (. colors :green)})
   (highlight! :DiagnosticHint {:fg (. colors :grey)})
+  (highlight! :DiagnosticSignError {:fg (. colors :red) :bg (. colors :bg)})
+  (highlight! :DiagnosticSignWarn {:fg (. colors :yellow) :bg (. colors :bg)})
+  (highlight! :DiagnosticSignInfo {:fg (. colors :green) :bg (. colors :bg)})
+  (highlight! :DiagnosticSignHint {:fg (. colors :grey) :bg (. colors :bg)})
   (highlight! :LspReferenceRead {:underline true})
   (highlight! :LspReferenceText {:underline true})
   (highlight! :LspReferenceWrite {:underline true})
@@ -70,6 +77,14 @@
   (highlight! :LirSymLink {:fg (. colors :grey)})
   (highlight! :LirEmptyDirText {:fg (. colors :blue)})
   (highlight! :LirFloatCurdirWindowNormal {:bg (. colors :black)})
-  (highlight! :LirFloatCurdirWindowDirName {:fg (. colors :skyblue)}))
+  (highlight! :LirFloatCurdirWindowDirName {:fg (. colors :skyblue)})
+
+  ; Misc
+  (highlight! :TabLine {:fg (. colors :fg) :bg (. colors :mgrey)})
+  (highlight! :TabLineFill {:fg (. colors :fg) :bg (. colors :bg)})
+  (highlight! :TabLineSel {:fg (. colors :fg) :bg (. colors :grey2)})
+  (highlight! :LineNr {:fg (. colors :grey)})
+  (highlight! :NvimInternalError {:fg (. colors :red)})
+  (highlight! :VertSplit {:fg (. colors :grey2)}))
 
 colors
diff --git a/fnl/nvrc/ignite.fnl b/fnl/nvrc/ignite.fnl
index 58f3414..9eab014 100644
--- a/fnl/nvrc/ignite.fnl
+++ b/fnl/nvrc/ignite.fnl
@@ -2,4 +2,5 @@
 (require :nvrc.options)
 (require :nvrc.keymaps)
 (require :nvrc.events)
+(require :nvrc.ui.statusline)
 (require :nvrc.pack)
diff --git a/fnl/nvrc/pack.fnl b/fnl/nvrc/pack.fnl
index 75d222d..61dd2d8 100644
--- a/fnl/nvrc/pack.fnl
+++ b/fnl/nvrc/pack.fnl
@@ -11,7 +11,6 @@
                                                     (pack :nvim-treesitter/nvim-treesitter-refactor {:after :nvim-treesitter})
                                                     (pack :nvim-treesitter/nvim-treesitter-textobjects {:after :nvim-treesitter})]})
 
-(pack! :feline-nvim/feline.nvim {:req :feline})
 (pack! :Pocco81/TrueZen.nvim {:cmd :TZAtaraxis})
 (pack! :antoinemadec/FixCursorHold.nvim)
 (pack! :luukvbaal/stabilize.nvim {:init :stabilize})
diff --git a/fnl/nvrc/packs/feline.fnl b/fnl/nvrc/packs/feline.fnl
deleted file mode 100644
index fc4a082..0000000
--- a/fnl/nvrc/packs/feline.fnl
+++ /dev/null
@@ -1,114 +0,0 @@
-(local feline (require :feline))
-(local lsp (require :feline.providers.lsp))
-(local lsp_severity vim.diagnostic.severity)
-(local vi_mode (require :feline.providers.vi_mode))
-
-(local colors (require :nvrc.colors))
-(local utils (require :nvrc.utils))
-
-(local vi_mode_colors {:NORMAL (. colors :green)
-                       :INSERT (. colors :red)
-                       :VISUAL (. colors :yellow)
-                       :OP (. colors :green)
-                       :BLOCK (. colors :skyblue)
-                       :REPLACE (. colors :violet)
-                       :V-REPLACE (. colors :violet)
-                       :ENTER (. colors :skyblue)
-                       :MORE (. colors :skyblue)
-                       :SELECT (. colors :orange)
-                       :COMMAND (. colors :green)
-                       :SHELL (. colors :green)
-                       :TERM (. colors :green)
-                       :NONE (. colors :yellow)})
-
-(local modules {:pad {:provider "▊ " :hl {:fg (. colors :skyblue)}}
-                :current_position {:provider :position
-                                   :left_sep " "
-                                   :right_sep {1 " "
-                                               2 {:str :vertical_bar_thin
-                                                  :hl {:fg :fg :bg :bg}}}}
-                :vi_mode {:provider :vi_mode
-                          :icon ""
-                          :right_sep " "
-                          :hl (fn []
-                                {:name (vi_mode.get_mode_highlight_name)
-                                 :fg (vi_mode.get_mode_color)})}
-                :file {:info {:provider {:name :file_info
-                                         :opts {:file_modified_icon "[+]"
-                                                :file_readonly_icon "!w "}}
-                              :icon ""
-                              :right_sep " "
-                              :hl {:fg (. colors :orange) :style :bold}}
-                       :encoding {:provider :file_encoding
-                                  :icon ""
-                                  :right_sep " "
-                                  :hl {:fg (. colors :magenta) :style :bold}}
-                       :type {:provider :file_type
-                              :icon ""
-                              :right_sep " "
-                              :hl {:fg (. colors :magenta) :style :bold}}
-                       :size {:provider :file_size
-                              :right_sep {1 " "
-                                          2 {:str :vertical_bar_thin
-                                             :hl {:fg :fg :bg :bg}}}}}
-                :line_percentage {:provider :line_percentage
-                                  :right_sep " "
-                                  :hl {:style :bold}}
-                :scroll_bar {:provider :scroll_bar
-                             :right_sep " "
-                             :hl {:fg (. colors :skyblue) :style :bold}}
-                :lsp {:name {:provider :lsp_client-names
-                             :icon ""
-                             :right_sep " "
-                             :hl {:fg (. colors :yellow)}}
-                      :diag_err {:provider :diagnostic_errors
-                                 :enabled #(lsp.diagnostics_exist lsp_severity.ERROR)
-                                 :left_sep " "
-                                 :icon :E
-                                 :hl {:fg (. colors :red)}}
-                      :diag_warn {:provider :diagnostic_warnings
-                                  :enabled #(lsp.diagnostics_exist lsp_severity.WARN)
-                                  :left_sep " "
-                                  :icon :W
-                                  :hl {:fg (. colors :yellow)}}
-                      :diag_info {:provider :diagnostic_info
-                                  :enabled #(lsp.diagnostics_exist lsp_severity.INFO)
-                                  :left_sep " "
-                                  :icon :I
-                                  :hl {:fg (. colors :skyblue)}}
-                      :diag_hint {:provider :diagnostic_hints
-                                  :enabled #(lsp.diagnostics_exist lsp_severity.HINT)
-                                  :left_sep " "
-                                  :icon :H
-                                  :hl {:fg (. colors :white)}}}})
-
-(local comps {:left {:active [(. modules :pad)
-                              (. modules :vi_mode)
-                              (. modules :file :info)
-                              (. modules :file :size)
-                              (. modules :current_position)
-                              (. modules :lsp :diag_err)
-                              (. modules :lsp :diag_warn)
-                              (. modules :lsp :diag_info)
-                              (. modules :lsp :diag_hint)]
-                     :inactive []}
-              :right {:active [(. modules :file :encoding)
-                               (. modules :file :type)
-                               (. modules :line_percentage)
-                               (. modules :scroll_bar)]
-                      :inactive []}})
-
-(local components
-       {:active [comps.left.active comps.right.active]
-        :inactive [comps.left.inactive comps.right.inactive]})
-
-(local properties
-       {:force_inactive {:filetypes [:lir :packer]
-                         :buftypes [:terminal :packer]}})
-
-(feline.setup {:theme colors
-               :default_bg (. colors :bg)
-               :default_fg (. colors :fg)
-               : components
-               : properties
-               : vi_mode_colors})
diff --git a/fnl/nvrc/ui/modules/diagnostics.fnl b/fnl/nvrc/ui/modules/diagnostics.fnl
new file mode 100644
index 0000000..a1e2530
--- /dev/null
+++ b/fnl/nvrc/ui/modules/diagnostics.fnl
@@ -0,0 +1,21 @@
+(fn diagnostics []
+  (let [count {}
+        levels {:errors :Error :warnings :Warn :info :Info :hints :Hint}]
+    (each [k level (pairs levels)]
+      (tset count k (vim.tbl_count (vim.diagnostic.get 0 {:severity level}))))
+    (var errors "")
+    (var warnings "")
+    (var hints "")
+    (var info "")
+    (when (not= (. count :errors) 0)
+      (set errors (.. "%#DiagnosticSignError#E" (. count :errors))))
+    (when (not= (. count :warnings) 0)
+      (set warnings
+           (.. " %#DiagnosticSignWarning#W" (. count :warnings))))
+    (when (not= (. count :hints) 0)
+      (set hints (.. " %#DiagnosticSignHint#H" (. count :hints))))
+    (when (not= (. count :info) 0)
+      (set info (.. " %#DiagnosticSignInformation#I" (. count :info))))
+    (.. errors warnings hints info "%#StatusLine#")))
+
+{: diagnostics}
diff --git a/fnl/nvrc/ui/modules/misc.fnl b/fnl/nvrc/ui/modules/misc.fnl
new file mode 100644
index 0000000..24d84f9
--- /dev/null
+++ b/fnl/nvrc/ui/modules/misc.fnl
@@ -0,0 +1,14 @@
+(fn file-size []
+  "feline.nvim's file size calculation module."
+  (let [suffix [:b :k :M :G :T :P :E]]
+    (var index 1)
+    (var fsize (vim.fn.getfsize (vim.api.nvim_buf_get_name 0)))
+    (when (< fsize 0)
+      (set fsize 0))
+    (while (and (> fsize 1024) (< index 7))
+      (set fsize (/ fsize 1024))
+      (set index (+ index 1)))
+    (string.format (or (and (= index 1) "%g%s | ") "%.2f%s | ") fsize
+                   (. suffix index))))
+
+{: file-size}
diff --git a/fnl/nvrc/ui/modules/vi_mode.fnl b/fnl/nvrc/ui/modules/vi_mode.fnl
new file mode 100644
index 0000000..1b9f1a1
--- /dev/null
+++ b/fnl/nvrc/ui/modules/vi_mode.fnl
@@ -0,0 +1,40 @@
+(local modes {:n :NORMAL
+              :no :NORMAL
+              :v :VISUAL
+              :V "V-LINE"
+              "\022" "V-BLOCK"
+              :s :SELECT
+              :S "L-SELECT"
+              "\019" "B-SELECT"
+              :i :INSERT
+              :ic :INSERT
+              :R :REPLACE
+              :Rv "V-REPLACE"
+              :c :COMMAND
+              :cv "VIM-EX"
+              :ce :EX
+              :r :PROMPT
+              :rm :MOAR
+              :r? :CONFIRM
+              :! :SHELL
+              :t :TERMINAL})
+
+(fn mode []
+  (let [current-mode (. (vim.api.nvim_get_mode) :mode)]
+    (: (string.format "%s " (. modes current-mode)) :upper)))
+
+(fn update-mode-colors []
+  (let [current-mode (. (vim.api.nvim_get_mode) :mode)]
+    (var mode-color "%#StatuslineAccent#")
+    (if (= current-mode :n) (set mode-color "%#StatuslineAccent#")
+        (or (= current-mode :i) (= current-mode :ic))
+        (set mode-color "%#StatuslineInsertAccent#")
+        (or (or (= current-mode :v) (= current-mode :V))
+            (= current-mode "\022"))
+        (set mode-color "%#StatusLineVisualAccent#") (= current-mode :R)
+        (set mode-color "%#StatusLineReplaceAccent#") (= current-mode :c)
+        (set mode-color "%#StatusLineCmdLineAccent#") (= current-mode :t)
+        (set mode-color "%#StatusLineTerminalAccent#"))
+    mode-color))
+
+{: mode : update-mode-colors}
diff --git a/fnl/nvrc/ui/statusline.fnl b/fnl/nvrc/ui/statusline.fnl
new file mode 100644
index 0000000..49afa7f
--- /dev/null
+++ b/fnl/nvrc/ui/statusline.fnl
@@ -0,0 +1,28 @@
+(import-macros {: setl!} :nvrc.macro.set)
+(import-macros {: ag!
+                : au!} :nvrc.macro.event)
+
+(local {: mode : update-mode-colors} (require :nvrc.ui.modules.vi_mode))
+(local {: diagnostics} (require :nvrc.ui.modules.diagnostics))
+(local {: file-size} (require :nvrc.ui.modules.misc))
+
+(global statusline {})
+(set statusline.enable (fn []
+                         (table.concat ["%#StatusLinePad#"
+                                        "▊ "
+                                        "%#StatusLine#"
+                                        (update-mode-colors)
+                                        (mode)
+                                        "%#StatusLineFile#"
+                                        "%f%m%r "
+                                        "%#StatusLine#"
+                                        (file-size)
+                                        "%l:%c | "
+                                        (diagnostics)
+                                        "%="
+                                        "%#StatusLineFileData#"
+                                        "%y %n"])))
+
+(ag! ui-statusline
+  (au! [WinEnter BufEnter] * #(setl! statusline "%!v:lua.statusline.enable()"))
+  (au! [WinLeave BufLeave] * #(setl! statusline "")))