Code Refactor

- Move select_* function to shell_command_selectors.lua.
- Rename select_args to select_compiler_args.

lua/nvim-treesitter/shell_command_selectors.lua

@@ -0,0 +1,175 @@
+local fn = vim.fn
+local utils = require'nvim-treesitter.utils'
+
+local M = {}
+
+function M.select_mkdir_cmd(directory, cwd, info_msg)
+  if fn.has('win32') == 1 then
+    return {
+      cmd = 'cmd',
+      opts = {
+        args = { '/C', 'mkdir', directory},
+	cwd = cwd,
+      },
+      info = info_msg,
+      err = "Could not create "..directory,
+    }
+  else
+    return {
+      cmd = 'mkdir',
+      opts = {
+        args = { directory },
+	cwd = cwd,
+      },
+      info = info_msg,
+      err = "Could not create "..directory,
+    }
+  end
+end
+
+function M.select_rm_file_cmd(file, info_msg)
+  if fn.has('win32') == 1 then
+    return {
+      cmd = 'cmd',
+      opts = {
+        args = { '/C', 'if', 'exist', file, 'del', file },
+      },
+      info = info_msg,
+      err = "Could not delete "..file,
+    }
+  else
+    return {
+      cmd = 'rm',
+      opts = {
+        args = { file },
+      },
+      info = info_msg,
+      err = "Could not delete "..file,
+    }
+  end
+end
+
+function M.select_executable(executables)
+  return vim.tbl_filter(function(c) return fn.executable(c) == 1 end, executables)[1]
+end
+
+function M.select_compiler_args(repo)
+  local args = {
+        '-o',
+        'parser.so',
+        '-I./src',
+        repo.files,
+        '-shared',
+        '-Os',
+        '-lstdc++',
+  }
+  if fn.has('win32') == 0 then
+    table.insert(args, '-fPIC')
+  end
+  return args
+end
+
+function M.select_install_rm_cmd(cache_folder, project_name)
+  if fn.has('win32') == 1 then
+    local dir = cache_folder ..'\\'.. project_name
+    return {
+      cmd = 'cmd',
+      opts = {
+        args = { '/C', 'if', 'exist', dir, 'rmdir', '/s', '/q', dir },
+      }
+    }
+  else
+    return {
+      cmd = 'rm',
+      opts = {
+        args = { '-rf', cache_folder..'/'..project_name },
+      }
+    }
+  end
+end
+
+function M.select_mv_cmd(from, to, cwd)
+  if fn.has('win32') == 1 then
+    return {
+      cmd = 'cmd',
+      opts = {
+        args = { '/C', 'move', '/Y', from, to },
+        cwd = cwd,
+      }
+    }
+  else
+    return {
+      cmd = 'mv',
+      opts = {
+        args = { from, to },
+        cwd = cwd,
+      },
+    }
+  end
+end
+
+function M.select_download_commands(repo, project_name, cache_folder, revision)
+  if vim.fn.executable('tar') == 1 and vim.fn.executable('curl') == 1 and repo.url:find("github.com", 1, true) then
+
+    revision = revision or repo.branch or "master"
+    local path_sep = utils.get_path_sep()
+    return {
+      M.select_install_rm_cmd(cache_folder, project_name..'-tmp'),
+      {
+        cmd = 'curl',
+        info = 'Downloading...',
+        err = 'Error during download, please verify your internet connection',
+        opts = {
+          args = {
+            '-L', -- follow redirects
+            repo.url.."/archive/"..revision..".tar.gz",
+            '--output',
+            project_name..".tar.gz"
+          },
+          cwd = cache_folder,
+        },
+      },
+      M.select_mkdir_cmd(project_name..'-tmp', cache_folder, 'Creating temporary directory'),
+      {
+        cmd = 'tar',
+        info = 'Extracting...',
+        err = 'Error during tarball extraction.',
+        opts = {
+          args = {
+            '-xvf',
+            project_name..".tar.gz",
+            '-C',
+            project_name..'-tmp',
+          },
+          cwd = cache_folder,
+        },
+      },
+      M.select_rm_file_cmd(cache_folder..path_sep..project_name..".tar.gz"),
+      M.select_mv_cmd(utils.join_path(project_name..'-tmp', repo.url:match('[^/]-$')..'-'..revision),
+                    project_name,
+                    cache_folder),
+      M.select_install_rm_cmd(cache_folder, project_name..'-tmp')
+    }
+  else
+    return {
+      {
+        cmd = 'git',
+        info = 'Downloading...',
+        err = 'Error during download, please verify your internet connection',
+        opts = {
+          args = {
+            'clone',
+            '--single-branch',
+            '--branch', repo.branch or 'master',
+            '--depth', '1',
+            repo.url,
+            project_name
+          },
+          cwd = cache_folder,
+        },
+      }
+    }
+  end
+end
+
+return M