github.com/hugh712/snapd@v0.0.0-20200910133618-1a99902bd583/advisor/finder.go (about)

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2018 Canonical Ltd
     5   *
     6   * This program is free software: you can redistribute it and/or modify
     7   * it under the terms of the GNU General Public License version 3 as
     8   * published by the Free Software Foundation.
     9   *
    10   * This program is distributed in the hope that it will be useful,
    11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13   * GNU General Public License for more details.
    14   *
    15   * You should have received a copy of the GNU General Public License
    16   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    17   *
    18   */
    19  
    20  package advisor
    21  
    22  var newFinder = Open
    23  
    24  type Finder interface {
    25  	FindCommand(command string) ([]Command, error)
    26  	FindPackage(pkgName string) (*Package, error)
    27  	Close() error
    28  }
    29  
    30  func ReplaceCommandsFinder(constructor func() (Finder, error)) (restore func()) {
    31  	old := newFinder
    32  	newFinder = constructor
    33  	return func() {
    34  		newFinder = old
    35  	}
    36  }