Create an editorconfig plugin for vis

3 files changed, 96 insertions, 0 deletions

diff --git a/.editorconfig b/.editorconfig
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+++ b/.editorconfig
@@ -0,0 +1,5 @@
+root = true
+
+[*.lua]
+indent_style = space
+indent_size = 2
diff --git a/README.md b/README.md
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index 0000000..80741ef
--- /dev/null
+++ b/README.md
@@ -0,0 +1,14 @@
+# vis-editorconfig
+
+A [vis][vis] plugin for [editorconfig][ec].
+
+[vis]: https://github.com/martanne/vis
+[ec]: http://editorconfig.org/
+
+## Installation
+
+```shell
+git clone https://github.com/vktec/vis-editorconfig "$HOME/.config/vis/editorconfig"
+```
+
+Then add `require "editorconfig/editorconfig"` to your `visrc.lua`.
diff --git a/editorconfig.lua b/editorconfig.lua
new file mode 100644
index 0000000..1370926
--- /dev/null
+++ b/editorconfig.lua
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+require "vis"
+ec = require "editorconfig_core"
+
+-- Simple wrapper
+function vis_set(option, value)
+  if type(value) == "boolean" then
+    if value then
+      value = "yes"
+    else
+      value = "no"
+    end
+  end
+
+  vis:command("set " .. option .. " " .. value)
+end
+
+OPTIONS = {
+  indent_style = function (value)
+    vis_set("expandtab", (value == "space"))
+  end,
+
+  indent_size = function (value)
+    if value ~= "tab" then -- tab_width is a synonym anyway
+      vis_set("tabwidth", value)
+    end
+  end,
+
+  tab_width = function (value)
+    vis_set("tabwidth", value)
+  end,
+
+  -- Not supported by vis
+  --   end_of_line
+  --   charset
+  --   trim_trailing_whitespace
+  --   insert_final_newline
+  --   max_line_length
+}
+
+-- Uses editorconfig-core-lua's as yet unreleased iterator API
+--function ec_iter(p) do
+--  return ec.open(p)
+--end
+
+-- Compatible with editorconfig-core-lua v0.1.1
+function ec_iter(p)
+  i = 0
+  props, keys = ec.parse(p)
+  n = #keys
+  return function ()
+    i = i + 1
+    if i <= n then
+      return keys[i], props[keys[i]]
+    end
+  end
+end
+
+function ec_set_values(path)
+  if path then
+    for name, value in ec_iter(path) do
+      if OPTIONS[name] then
+        OPTIONS[name](value)
+      end
+    end
+  end
+end
+
+function ec_parse_cmd() ec_set_values(vis.win.file.path) end
+vis:command_register("econfig_parse", ec_parse_cmd, "(Re)parse an editorconfig file")
+
+vis.events.subscribe(vis.events.FILE_OPEN, function (file)
+  ec_set_values(file.path)
+end)
+
+vis.events.subscribe(vis.events.FILE_SAVE_POST, function (file, path)
+  ec_set_values(path)
+end)