From fb10b4906aadaeff295883d171c05246943e5571 Mon Sep 17 00:00:00 2001
From: Hennadii Chernyshchyk <genaloner@gmail.com>
Date: Sat, 10 Sep 2022 14:05:32 +0300
Subject: Initial commit

---
 lua/tasks/utils.lua | 100 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 lua/tasks/utils.lua

(limited to 'lua/tasks/utils.lua')

diff --git a/lua/tasks/utils.lua b/lua/tasks/utils.lua
new file mode 100644
index 0000000..983bde7
--- /dev/null
+++ b/lua/tasks/utils.lua
@@ -0,0 +1,100 @@
+local scandir = require('plenary.scandir')
+local Path = require('plenary.path')
+local utils = {}
+
+local args_regex = vim.regex([[\s\%(\%([^'"]*\(['"]\)[^'"]*\1\)*[^'"]*$\)\@=]])
+
+--- A small wrapper around `vim.notify` that adds plugin title.
+---@param msg string
+---@param log_level number
+function utils.notify(msg, log_level) vim.notify(msg, log_level, { title = 'Tasks' }) end
+
+--- Splits command line arguments respecting quotes.
+---@param args string?
+---@return table
+function utils.split_args(args)
+  if not args then
+    return {}
+  end
+
+  -- Split on spaces unless in quotes.
+  local splitted_args = {}
+  local match_beg
+  while true do
+    match_beg = args_regex:match_str(args)
+    if match_beg then
+      table.insert(splitted_args, args:sub(1, match_beg))
+      args = args:sub(match_beg + 2)
+    else
+      -- Insert last arg left.
+      table.insert(splitted_args, args)
+      break
+    end
+  end
+
+  -- Remove quotes
+  for i, arg in ipairs(splitted_args) do
+    splitted_args[i] = arg:gsub('"', ''):gsub("'", '')
+  end
+  return splitted_args
+end
+
+--- Joins command line arguments respecting spaces by putting double quotes around them.
+---@param args table?
+---@return string
+function utils.join_args(args)
+  if not args then
+    return ''
+  end
+
+  -- Add quotes if argument contain spaces
+  for index, arg in ipairs(args) do
+    if arg:find(' ') then
+      args[index] = '"' .. arg .. '"'
+    end
+  end
+
+  return table.concat(args, ' ')
+end
+
+---@return table
+function utils.get_module_names()
+  local module_dir = Path:new(debug.getinfo(1).source:sub(2)):parent() / 'module'
+
+  local modules = {}
+  for _, entry in ipairs(scandir.scan_dir(module_dir.filename, { depth = 1 })) do
+    -- Strip full path and extension
+    local extension_len = 4
+    local parent_offset = 2
+    table.insert(modules, entry:sub(#Path:new(entry):parent().filename + parent_offset, #entry - extension_len))
+  end
+
+  return modules
+end
+
+--- Find a module by name
+---@param module_type string name of a module or `auto` string to pick a first module that match a condition.
+---@return table?, string?: module and its name.
+function utils.get_module(module_type)
+  if module_type == 'auto' then
+    for _, name in ipairs(utils.get_module_names()) do
+      local module = require('tasks.module.' .. name)
+      if module.condition() then
+        return module, name
+      end
+    end
+
+    utils.notify('Unable to autodetect module for this working directory', vim.log.levels.ERROR)
+    return nil, nil
+  end
+
+  local module = require('tasks.module.' .. module_type)
+  if not module then
+    utils.notify('Unable to find a module named ' .. module_type, vim.log.levels.ERROR)
+    return nil, nil
+  end
+
+  return module, module_type
+end
+
+return utils
-- 
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