MAJOR: Project rename and preparation for v1.0.0

I hope I haven't missed any for the renames!

lua/outline/writer.lua

@@ -0,0 +1,130 @@
+local parser = require 'outline.parser'
+local cfg = require('outline.config')
+local ui = require 'outline.ui'
+
+local M = {}
+
+local function is_buffer_outline(bufnr)
+  if not vim.api.nvim_buf_is_valid(bufnr) then
+    return false
+  end
+  local name = vim.api.nvim_buf_get_name(bufnr)
+  local ft = vim.api.nvim_buf_get_option(bufnr, 'filetype')
+  return string.match(name, 'OUTLINE') ~= nil and ft == 'Outline'
+end
+
+local hlns = vim.api.nvim_create_namespace 'outline-icon-highlight'
+
+function M.write_outline(bufnr, lines)
+  if not is_buffer_outline(bufnr) then
+    return
+  end
+
+  lines = vim.tbl_map(function(line)
+    lines, _ = string.gsub(line, "\n", " ")
+    return lines
+  end, lines)
+
+  vim.api.nvim_buf_set_option(bufnr, 'modifiable', true)
+  vim.api.nvim_buf_set_lines(bufnr, 0, -1, false, lines)
+  vim.api.nvim_buf_set_option(bufnr, 'modifiable', false)
+end
+
+function M.add_highlights(bufnr, hl_info, nodes)
+  for _, line_hl in ipairs(hl_info) do
+    local line, hl_start, hl_end, hl_type = unpack(line_hl)
+    vim.api.nvim_buf_add_highlight(
+      bufnr,
+      hlns,
+      hl_type,
+      line - 1,
+      hl_start,
+      hl_end
+    )
+  end
+
+  M.add_hover_highlights(bufnr, nodes)
+end
+
+local ns = vim.api.nvim_create_namespace 'outline-virt-text'
+
+function M.write_details(bufnr, lines)
+  if not is_buffer_outline(bufnr) then
+    return
+  end
+  if not cfg.o.outline_items.show_symbol_details then
+    return
+  end
+
+  for index, value in ipairs(lines) do
+    vim.api.nvim_buf_set_extmark(bufnr, ns, index - 1, -1, {
+      virt_text = { { value, 'OutlineDetails' } },
+      virt_text_pos = 'eol',
+      hl_mode = 'combine',
+    })
+  end
+end
+
+function M.write_lineno(bufnr, lines, max)
+  if not is_buffer_outline(bufnr) then
+    return
+  end
+  if not cfg.o.outline_items.show_symbol_lineno then
+    return
+  end
+  local maxwidth = #tostring(max)
+
+  for index, value in ipairs(lines) do
+    local leftpad = string.rep(' ', maxwidth-#value)
+    vim.api.nvim_buf_set_extmark(bufnr, ns, index - 1, -1, {
+      virt_text = { {leftpad..value, 'OutlineLineno' } },
+      virt_text_pos = 'overlay',
+      virt_text_win_col = 0,
+      hl_mode = 'combine',
+    })
+  end
+end
+
+local function clear_virt_text(bufnr)
+  vim.api.nvim_buf_clear_namespace(bufnr, -1, 0, -1)
+end
+
+M.add_hover_highlights = function(bufnr, nodes)
+  if not cfg.o.outline_items.highlight_hovered_item then
+    return
+  end
+
+  -- clear old highlight
+  ui.clear_hover_highlight(bufnr)
+  for _, node in ipairs(nodes) do
+    if not node.hovered then
+      goto continue
+    end
+
+    local marker_fac = (cfg.o.symbol_folding.markers and 1) or 0
+    if node.prefix_length then
+      ui.add_hover_highlight(
+        bufnr,
+        node.line_in_outline - 1,
+        node.prefix_length
+      )
+    end
+    ::continue::
+  end
+end
+
+-- runs the whole writing routine where the text is cleared, new data is parsed
+-- and then written
+function M.parse_and_write(bufnr, flattened_outline_items)
+  local lines, hl_info = parser.get_lines(flattened_outline_items)
+  M.write_outline(bufnr, lines)
+
+  clear_virt_text(bufnr)
+  local details = parser.get_details(flattened_outline_items)
+  local lineno, lineno_max = parser.get_lineno(flattened_outline_items)
+  M.add_highlights(bufnr, hl_info, flattened_outline_items)
+  M.write_details(bufnr, details)
+  M.write_lineno(bufnr, lineno, lineno_max)
+end
+
+return M