WIP: force move cursor

lua/oil/columns.lua

@@ -27,11 +27,16 @@ local function get_column(adapter, defn)
   return all_columns[name] or adapter.get_column(name)
 end
 
----@param scheme string
+---@param adapter_or_scheme string|oil.Adapter
 ---@return oil.ColumnSpec[]
-M.get_supported_columns = function(scheme)
+M.get_supported_columns = function(adapter_or_scheme)
+  local adapter
+  if type(adapter_or_scheme) == "string" then
+    adapter = config.get_adapter_by_scheme(adapter_or_scheme)
+  else
+    adapter = adapter_or_scheme
+  end
   local ret = {}
-  local adapter = config.get_adapter_by_scheme(scheme)
   for _, def in ipairs(config.columns) do
     if get_column(adapter, def) then
       table.insert(ret, def)

lua/oil/config.lua

@@ -138,9 +138,12 @@ M.get_trash_url = function()
   return M.adapter_to_scheme.files .. fs.os_to_posix_path(M.trash)
 end
 
----@param scheme string
+---@param scheme nil|string
 ---@return nil|oil.Adapter
 M.get_adapter_by_scheme = function(scheme)
+  if not scheme then
+    return nil
+  end
   if not vim.endswith(scheme, "://") then
     local pieces = vim.split(scheme, "://", { plain = true })
     if #pieces <= 2 then

lua/oil/init.lua

@@ -5,7 +5,7 @@ local M = {}
 ---@class oil.Entry
 ---@field name string
 ---@field type oil.EntryType
----@field id nil|string Will be nil if it hasn't been persisted to disk yet
+---@field id nil|integer Will be nil if it hasn't been persisted to disk yet
 
 ---@alias oil.EntryType "file"|"directory"|"socket"|"link"
 ---@alias oil.TextChunk string|string[]
@@ -29,15 +29,12 @@ local M = {}
 ---@return nil|oil.Entry
 M.get_entry_on_line = function(bufnr, lnum)
   local columns = require("oil.columns")
-  local config = require("oil.config")
   local parser = require("oil.mutator.parser")
   local util = require("oil.util")
   if vim.bo[bufnr].filetype ~= "oil" then
     return nil
   end
-  local bufname = vim.api.nvim_buf_get_name(0)
-  local scheme = util.parse_url(bufname)
-  local adapter = config.get_adapter_by_scheme(scheme)
+  local adapter = util.get_adapter(bufnr)
   if not adapter then
     return nil
   end
@@ -46,15 +43,15 @@ M.get_entry_on_line = function(bufnr, lnum)
   if not line then
     return nil
   end
-  local column_defs = columns.get_supported_columns(scheme)
-  local parsed_entry, entry = parser.parse_line(adapter, line, column_defs)
-  if parsed_entry then
-    if entry then
-      return util.export_entry(entry)
+  local column_defs = columns.get_supported_columns(adapter)
+  local result = parser.parse_line(adapter, line, column_defs)
+  if result then
+    if result.entry then
+      return util.export_entry(result.entry)
     else
       return {
-        name = parsed_entry.name,
-        type = parsed_entry._type,
+        name = result.data.name,
+        type = result.data._type,
       }
     end
   end

lua/oil/mutator/parser.lua

@@ -38,27 +38,40 @@ local function parsedir(name)
   return name, isdir
 end
 
+---@class oil.ParseResult
+---@field data table Parsed entry data
+---@field ranges table<string, integer[]> Locations of the various columns
+---@field entry nil|oil.InternalEntry If the entry already exists
+
 ---Parse a single line in a buffer
 ---@param adapter oil.Adapter
 ---@param line string
 ---@param column_defs oil.ColumnSpec[]
----@return nil|table Parsed entry data
----@return nil|oil.InternalEntry If the entry already exists
----@return nil|string Error message
+---@return nil|oil.ParseResult
+---@return nil|string Error
 M.parse_line = function(adapter, line, column_defs)
   local ret = {}
+  local ranges = {}
+  local start = 1
   local value, rem = line:match("^/(%d+) (.+)$")
   if not value then
-    return nil, nil, "Malformed ID at start of line"
+    return nil, "Malformed ID at start of line"
   end
+  ranges.id = { start, value:len() + 1 }
+  start = ranges.id[2] + 1
   ret.id = tonumber(value)
   for _, def in ipairs(column_defs) do
     local name = util.split_config(def)
+    local range = { start }
+    local start_len = string.len(rem)
     value, rem = columns.parse_col(adapter, rem, def)
-    if not value then
-      return nil, nil, string.format("Parsing %s failed", name)
+    if not value or not rem then
+      return nil, string.format("Parsing %s failed", name)
     end
     ret[name] = value
+    range[2] = range[1] + start_len - string.len(rem) - 1
+    ranges[name] = range
+    start = range[2] + 1
   end
   local name = rem
   if name then
@@ -70,8 +83,9 @@ M.parse_line = function(adapter, line, column_defs)
     ret._type = isdir and "directory" or "file"
   end
   local entry = cache.get_entry_by_id(ret.id)
+  ranges.name = { start, start + string.len(rem) - 1 }
   if not entry then
-    return ret
+    return { data = ret, ranges = ranges }
   end
 
   -- Parse the symlink syntax
@@ -81,8 +95,9 @@ M.parse_line = function(adapter, line, column_defs)
     local name_pieces = vim.split(ret.name, " -> ", { plain = true })
     if #name_pieces ~= 2 then
       ret.name = ""
-      return ret
+      return { data = ret, ranges = ranges }
     end
+    ranges.name = { start, start + string.len(name_pieces[1]) - 1 }
     ret.name = parsedir(vim.trim(name_pieces[1]))
     ret.link_target = name_pieces[2]
     ret._type = "link"
@@ -93,7 +108,7 @@ M.parse_line = function(adapter, line, column_defs)
     ret._type = entry[FIELD.type]
   end
 
-  return ret, entry
+  return { data = ret, entry = entry, ranges = ranges }
 end
 
 ---@param bufnr integer
@@ -113,8 +128,8 @@ M.parse = function(bufnr)
     return diffs, errors
   end
   local scheme, path = util.parse_url(bufname)
-  local column_defs = columns.get_supported_columns(scheme)
   local parent_url = scheme .. path
+  local column_defs = columns.get_supported_columns(adapter)
   local children = cache.list_url(parent_url)
   local lines = vim.api.nvim_buf_get_lines(bufnr, 0, -1, true)
   local original_entries = {}
@@ -137,8 +152,8 @@ M.parse = function(bufnr)
   end
   for i, line in ipairs(lines) do
     if line:match("^/%d+") then
-      local parsed_entry, entry, err = M.parse_line(adapter, line, column_defs)
-      if not parsed_entry then
+      local result, err = M.parse_line(adapter, line, column_defs)
+      if not result or err then
         table.insert(errors, {
           message = err,
           lnum = i - 1,
@@ -146,6 +161,8 @@ M.parse = function(bufnr)
         })
         goto continue
       end
+      local parsed_entry = result.data
+      local entry = result.entry
       if not parsed_entry.name or parsed_entry.name:match("/") or not entry then
         local message
         if not parsed_entry.name then

lua/oil/view.lua

@@ -244,11 +244,33 @@ M.initialize = function(bufnr)
     group = "Oil",
     buffer = bufnr,
     callback = function()
+      local oil = require("oil")
+      local parser = require("oil.mutator.parser")
+
+      -- Force the cursor to be after the (concealed) ID at the beginning of the line
+      local adapter = util.get_adapter(bufnr)
+      if adapter then
+        local cur = vim.api.nvim_win_get_cursor(0)
+        local line = vim.api.nvim_buf_get_lines(bufnr, cur[1] - 1, cur[1], true)[1]
+        local column_defs = columns.get_supported_columns(adapter)
+        local result = parser.parse_line(adapter, line, column_defs)
+        if result and result.data then
+          local min_col = result.ranges.id[2] + 1
+          if cur[2] < min_col then
+            vim.api.nvim_win_set_cursor(0, { cur[1], min_col })
+          end
+        end
+      end
+
+      -- Debounce and update the preview window
       if timer then
         timer:again()
         return
       end
       timer = vim.loop.new_timer()
+      if not timer then
+        return
+      end
       timer:start(10, 100, function()
         timer:stop()
         timer:close()
@@ -257,7 +279,6 @@ M.initialize = function(bufnr)
           if vim.api.nvim_get_current_buf() ~= bufnr then
             return
           end
-          local oil = require("oil")
           local entry = oil.get_cursor_entry()
           if entry then
             local winid = util.get_preview_win()
@@ -397,7 +418,6 @@ local function render_buffer(bufnr, opts)
 end
 
 ---@private
----@param adapter oil.Adapter
 ---@param entry oil.InternalEntry
 ---@param column_defs table[]
 ---@param col_width integer[]