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model.go
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model.go
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/***********************************************************************************************************************
*
* MIT License
*
* Copyright (c) 2021 Nicolas JUHEL
*
* 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 shell
import (
"fmt"
"io"
liberr "github.com/nabbar/golib/errors"
shlcmd "github.com/nabbar/golib/shell/command"
)
type shell struct {
c map[string]shlcmd.Command
}
func (s *shell) Run(buf io.Writer, err io.Writer, args []string) {
if len(args) == 0 {
return
}
if cmd, ok := s.c[args[0]]; ok {
if cmd == nil {
_, _ = fmt.Fprintf(err, "Command not runable...\n")
panic(nil)
}
cmd.Run(buf, err, args[1:])
} else {
_, _ = fmt.Fprintf(err, "Invalid command\n")
}
}
func (s *shell) Walk(fct func(name string, item shlcmd.Command) (shlcmd.Command, liberr.Error)) liberr.Error {
if fct == nil {
return nil
}
for k, c := range s.c {
if s.c[k] == nil {
continue
}
if r, e := fct(k, c); e != nil {
return e
} else if r == nil {
continue
} else {
s.c[k] = r
}
}
return nil
}
func (s *shell) Add(prefix string, cmd ...shlcmd.Command) {
if len(s.c) == 0 {
s.c = make(map[string]shlcmd.Command)
}
for i := 0; i < len(cmd); i++ {
n := cmd[i].Name()
c := cmd[i]
if c == nil {
continue
}
if len(prefix) > 0 {
n = prefix + n
}
s.c[n] = c
}
}
func (s *shell) Get(cmd string) []shlcmd.Command {
var res = make([]shlcmd.Command, 0)
_ = s.Walk(func(name string, item shlcmd.Command) (shlcmd.Command, liberr.Error) {
if len(cmd) == 0 || name == cmd {
res = append(res, item)
}
return nil, nil
})
return res
}
func (s *shell) Desc(cmd string) map[string]string {
var res = make(map[string]string)
_ = s.Walk(func(name string, item shlcmd.Command) (shlcmd.Command, liberr.Error) {
if len(cmd) == 0 || name == cmd {
res[name] = item.Describe()
}
return nil, nil
})
return res
}