A modification-free API for Minecraft utilizing log parsing
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

70 lines
1.2 KiB

package commands
import "errors"
type CommandHolder struct {
Name string
Usage string
Handler CommandHandler
Permission int
Arguments map[string]*CommandArgument
ArgumentCount int
RequiredArgumentCount int
}
type CommandArgument struct {
Index int
Name string
Required bool
Type int
}
func (c *CommandHolder) Call(ctx *CommandContext) {
ctx.holder = c
if c.ArgumentCount > 0 {
// Arguments are cached, construct usage
if err := c.Validate(ctx); err != nil {
if err == UsageError {
ctx.Reply("Usage: " + ctx.Prefix + c.Usage)
} else {
ctx.Reply(err.Error())
}
return
}
}
// Use a goroutine to avoid any blocking operations
c.Handler(ctx)
}
var (
UsageError = errors.New("usage")
)
func (c *CommandHolder) Validate(ctx *CommandContext) error {
if ctx.ArgumentCount < c.RequiredArgumentCount {
return UsageError
}
var argValue string
for _, arg := range c.Arguments {
if ctx.ArgumentCount < arg.Index+1 {
break
}
if !arg.Required {
continue
}
argValue = ctx.Arguments[arg.Index]
if argValue == "" {
return errors.New("The " + arg.Name + " argument is required.")
}
}
return nil
}