Added multiple strategies for deteriming the column.

Doing a full grid select can be intimidating. A word-wise strat is
probably a good thing to have.

1 files changed, 84 insertions, 0 deletions

diff --git a/lua/warp/strategy/words.lua b/lua/warp/strategy/words.lua
new file mode 100644
index 0000000..d255203
--- /dev/null
+++ b/lua/warp/strategy/words.lua
@@ -0,0 +1,84 @@
+local vim = assert(vim)
+
+local M = {}
+local alphabet = "etansihrdlocumwfgypkbvjxqz"
+
+local function split_lines(line)
+  local i
+  local j = 1
+
+  local chars_to_col = {}
+  local col_to_chars = {}
+
+  local run_regex = function(rx, off)
+    if #alphabet < j then
+      return
+    end
+
+    if not off then
+      off = 0
+    end
+
+    i = 0
+    while true do
+      i = string.find(line, rx, i)
+      if i == nil then break end
+      i = i + 1
+
+      if #alphabet < j then
+        return
+      end
+
+      local nextalph = alphabet:sub(j, j)
+      j = j + 1
+      chars_to_col[nextalph] = i + off
+      col_to_chars[i + off] = nextalph
+    end
+  end
+
+  run_regex("%W%w")
+  run_regex("%s%S")
+  run_regex("%w%W", - 1)
+
+  local winstr = ""
+  i = 1
+  while i <= #line do
+    if col_to_chars[i] then
+      winstr = winstr .. col_to_chars[i]
+    else
+      winstr = winstr .. " "
+    end
+    i = i + 1
+  end
+
+  return winstr, chars_to_col
+end
+
+M.words_strategy = function ()
+  local chartab
+
+  return {
+    display = function ()
+      local curpos = vim.api.nvim_win_get_cursor(0)
+      local line_at = vim.fn.getline(curpos[1])
+      local str, tab = split_lines(line_at)
+      chartab = tab
+      return str
+    end,
+
+    on_char = function (ch)
+      if ch == '$' or ch == '^' then
+        vim.cmd("normal! " .. ch)
+      elseif not ch:match('[a-z]') then
+        vim.cmd("normal! f" .. ch)
+      else
+        if chartab[ch] then
+          vim.cmd("norma! " .. chartab[ch] .. "|")
+        end
+      end
+      return false
+    end
+  }
+end
+
+return M