homemaker/command.go

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2015-04-05 08:55:09 +00:00
/*
* Copyright (c) 2015 Alex Yatskov <alex@foosoft.net>
* Author: Alex Yatskov <alex@foosoft.net>
*
* Permission is hereby granted, free of charge, to any person obtaining a copy of
* this software and associated documentation files (the "Software"), to deal in
* the Software without restriction, including without limitation the rights to
* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
* the Software, and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
package main
import (
"fmt"
"log"
"os"
"os/exec"
"strings"
)
type command []string
func (this *command) valid() bool {
return len(*this) >= 1
}
func (this *command) process(dir string, flags int) error {
if !this.valid() {
return fmt.Errorf("command element is invalid")
}
cmd := exec.Command((*this)[0], (*this)[1:]...)
cmd.Dir = dir
cmd.Stderr = os.Stderr
cmd.Stdout = os.Stdout
if flags&optVerbose == optVerbose {
log.Printf("executing command %s", strings.Join(*this, " "))
}
return cmd.Run()
}