mirror of
https://github.com/beego/bee.git
synced 2024-12-23 01:30:50 +00:00
96 lines
2.2 KiB
Go
96 lines
2.2 KiB
Go
package commands
|
|
|
|
import (
|
|
"flag"
|
|
"io"
|
|
"os"
|
|
"strings"
|
|
|
|
"github.com/beego/bee/v2/logger/colors"
|
|
"github.com/beego/bee/v2/utils"
|
|
)
|
|
|
|
// Command is the unit of execution
|
|
type Command struct {
|
|
// Run runs the command.
|
|
// The args are the arguments after the command name.
|
|
Run func(cmd *Command, args []string) int
|
|
|
|
// PreRun performs an operation before running the command
|
|
PreRun func(cmd *Command, args []string)
|
|
|
|
// UsageLine is the one-line Usage message.
|
|
// The first word in the line is taken to be the command name.
|
|
UsageLine string
|
|
|
|
// Short is the short description shown in the 'go help' output.
|
|
Short string
|
|
|
|
// Long is the long message shown in the 'go help <this-command>' output.
|
|
Long string
|
|
|
|
// Flag is a set of flags specific to this command.
|
|
Flag flag.FlagSet
|
|
|
|
// CustomFlags indicates that the command will do its own
|
|
// flag parsing.
|
|
CustomFlags bool
|
|
|
|
// output out writer if set in SetOutput(w)
|
|
output *io.Writer
|
|
}
|
|
|
|
var AvailableCommands = []*Command{}
|
|
var cmdUsage = `Use {{printf "bee help %s" .Name | bold}} for more information.{{endline}}`
|
|
|
|
// Name returns the command's name: the first word in the Usage line.
|
|
func (c *Command) Name() string {
|
|
name := c.UsageLine
|
|
i := strings.Index(name, " ")
|
|
if i >= 0 {
|
|
name = name[:i]
|
|
}
|
|
return name
|
|
}
|
|
|
|
// SetOutput sets the destination for Usage and error messages.
|
|
// If output is nil, os.Stderr is used.
|
|
func (c *Command) SetOutput(output io.Writer) {
|
|
c.output = &output
|
|
}
|
|
|
|
// Out returns the out writer of the current command.
|
|
// If cmd.output is nil, os.Stderr is used.
|
|
func (c *Command) Out() io.Writer {
|
|
if c.output != nil {
|
|
return *c.output
|
|
}
|
|
|
|
return colors.NewColorWriter(os.Stderr)
|
|
}
|
|
|
|
// Usage puts out the Usage for the command.
|
|
func (c *Command) Usage() {
|
|
utils.Tmpl(cmdUsage, c)
|
|
os.Exit(2)
|
|
}
|
|
|
|
// Runnable reports whether the command can be run; otherwise
|
|
// it is a documentation pseudo-command such as import path.
|
|
func (c *Command) Runnable() bool {
|
|
return c.Run != nil
|
|
}
|
|
|
|
func (c *Command) Options() map[string]string {
|
|
options := make(map[string]string)
|
|
c.Flag.VisitAll(func(f *flag.Flag) {
|
|
defaultVal := f.DefValue
|
|
if len(defaultVal) > 0 {
|
|
options[f.Name+"="+defaultVal] = f.Usage
|
|
} else {
|
|
options[f.Name] = f.Usage
|
|
}
|
|
})
|
|
return options
|
|
}
|