/
shell.go
86 lines (76 loc) · 1.96 KB
/
shell.go
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/*
Copyright AppsCode Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package lib
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
shell "github.com/codeskyblue/go-sh"
)
func Execute(sh *shell.Session, cmd string) error {
var cmdlets []string
var appendOut bool
var createOut bool
var filename string
if strings.Contains(cmd, ">>") {
appendOut = true
cmdlets = strings.SplitN(cmd, ">>", 2)
filename = strings.TrimSpace(cmdlets[1])
if !filepath.IsAbs(filename) {
filename = filepath.Join(sh.Getwd(), filename)
}
} else if strings.Contains(cmd, ">") {
createOut = true
cmdlets = strings.SplitN(cmd, ">", 2)
filename = strings.TrimSpace(cmdlets[1])
if !filepath.IsAbs(filename) {
filename = filepath.Join(sh.Getwd(), filename)
}
} else {
cmdlets = []string{cmd}
}
fields := strings.Fields(cmdlets[0])
if len(fields) == 0 {
return fmt.Errorf("missing command: %s", cmd)
}
args := make([]interface{}, len(fields)-1)
for i := range fields[1:] {
args[i] = fields[i+1]
}
s := sh.Command(fields[0], args...)
if createOut {
if !Exists(filename) {
err := ioutil.WriteFile(filename, []byte(""), 0644)
if err != nil {
return err
}
} else {
err := os.Truncate(filename, 0)
if err != nil {
return err
}
}
return s.WriteStdout(filename)
} else if appendOut {
if !Exists(filename) {
err := ioutil.WriteFile(filename, []byte{}, 0644)
if err != nil {
return err
}
}
return s.AppendStdout(filename)
}
return s.Run()
}