build: add script to collect typo PRs (#35824)

scripts/collect_typos.lua

@@ -0,0 +1,99 @@
+#!/usr/bin/env -S nvim -l
+
+local function die(msg)
+  print(msg)
+  vim.cmd('cquit 1')
+end
+
+--- Executes and returns the output of `cmd`, or nil on failure.
+--- if die_on_fail is true, process dies with die_msg on failure
+--- @param cmd string[]
+--- @param die_on_fail boolean
+--- @param die_msg string
+--- @param stdin string?
+---
+--- @return string?
+local function _run(cmd, die_on_fail, die_msg, stdin)
+  local rv = vim.system(cmd, { stdin = stdin }):wait()
+  if rv.code ~= 0 then
+    if rv.stdout:len() > 0 then
+      print(rv.stdout)
+    end
+    if rv.stderr:len() > 0 then
+      print(rv.stderr)
+    end
+    if die_on_fail then
+      die(die_msg)
+    end
+    return nil
+  end
+  return rv.stdout
+end
+
+--- Run a command, return nil on failure
+--- @param cmd string[]
+--- @param stdin string?
+---
+--- @return string?
+local function run(cmd, stdin)
+  return _run(cmd, false, '', stdin)
+end
+
+--- Run a command, die on failure with err_msg
+--- @param cmd string[]
+--- @param err_msg string
+--- @param stdin string?
+---
+--- @return string
+local function run_die(cmd, err_msg, stdin)
+  return assert(_run(cmd, true, err_msg, stdin))
+end
+
+do
+  local pr_list = vim.json.decode(
+    run_die(
+      { 'gh', 'pr', 'list', '--label', 'typo', '--json', 'number' },
+      'Failed to get list of typo PRs'
+    )
+  )
+  --- @type integer[]
+  local pr_numbers = vim
+    .iter(pr_list)
+    :map(function(pr)
+      return pr.number
+    end)
+    :totable()
+  table.sort(pr_numbers)
+
+  local close_pr_lines = {}
+  local co_author_lines = {}
+  for _, pr_number in ipairs(pr_numbers) do
+    local patch_file = run_die(
+      { 'gh', 'pr', 'diff', tostring(pr_number), '--patch' },
+      'Failed to get patch of PR ' .. pr_number
+    )
+    if run({ 'git', 'apply', '--index', '-' }, patch_file) then
+      table.insert(close_pr_lines, ('Close #%d'):format(pr_number))
+      for author in patch_file:gmatch('\nFrom: (.- <.->)\n') do
+        local co_author_line = ('Co-authored-by: %s'):format(author)
+        if not vim.list_contains(co_author_lines, co_author_line) then
+          table.insert(co_author_lines, co_author_line)
+        end
+      end
+      for author in patch_file:gmatch('\nCo%-authored%-by: (.- <.->)\n') do
+        local co_author_line = ('Co-authored-by: %s'):format(author)
+        if not vim.list_contains(co_author_lines, co_author_line) then
+          table.insert(co_author_lines, co_author_line)
+        end
+      end
+    else
+      print('Failed to apply patch of PR ' .. pr_number)
+    end
+  end
+
+  local msg = ('docs: small fixes\n\n%s\n\n%s\n'):format(
+    table.concat(close_pr_lines, '\n'),
+    table.concat(co_author_lines, '\n')
+  )
+  print(run_die({ 'git', 'commit', '--file', '-' }, 'Failed to create commit', msg))
+end