Command evaluator and parser
- Matches commands against provided text
- Extracts parameters from matching input
- Provides default values for missing parameters
- Supports String, Integer, Float and Boolean parameters
- Supports "word" {} vs "sentence" <> parameter matching
propergithub.com/shomali11/proper
In this example, we are matching a few strings against a command format, then parsing parameters if found or returning default values.
package main
import (
"fmt"
"github.com/shomali11/commander"
)
func main() {
properties, isMatch := commander.NewCommand("ping").Match("ping")
fmt.Println(isMatch) // true
fmt.Println(properties) // {}
properties, isMatch = commander.NewCommand("ping").Match("pong")
fmt.Println(isMatch) // false
fmt.Println(properties) // nil
properties, isMatch = commander.NewCommand("echo {word}").Match("echo hello world!")
fmt.Println(isMatch) // true
fmt.Println(properties.StringParam("word", "")) // hello
properties, isMatch = commander.NewCommand("echo <sentence>").Match("echo hello world!")
fmt.Println(isMatch) // true
fmt.Println(properties.StringParam("sentence", "")) // hello world!
properties, isMatch = commander.NewCommand("repeat {word} {number}").Match("repeat hey 5")
fmt.Println(isMatch) // true
fmt.Println(properties.StringParam("word", "")) // hey
fmt.Println(properties.IntegerParam("number", 0)) // 5
properties, isMatch = commander.NewCommand("repeat {word} {number}").Match("repeat hey")
fmt.Println(isMatch) // true
fmt.Println(properties.StringParam("word", "")) // hey
fmt.Println(properties.IntegerParam("number", 0)) // 0
properties, isMatch = commander.NewCommand("search <stuff> {size}").Match("search hello there everyone 10")
fmt.Println(isMatch) // true
fmt.Println(properties.StringParam("stuff", "")) // hello there everyone
fmt.Println(properties.IntegerParam("size", 0)) // 10
}In this example, we are tokenizing the command format and returning each token with a number that determines whether it is a parameter (word vs sentence) or not
package main
import (
"fmt"
"github.com/shomali11/commander"
)
func main() {
tokens := commander.NewCommand("echo {word} <sentence>").Tokenize()
for _, token := range tokens {
fmt.Println(token)
}
}Output:
&{echo NOT_PARAMETER}
&{word WORD_PARAMETER}
&{sentence SENTENCE_PARAMETER}
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent