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|
package shell
import (
"bufio"
"fmt"
"io"
"os"
"golang.org/x/term"
)
func (inter *Interpreter) runNonInteractive() error {
scanner := bufio.NewScanner(os.Stdin)
for scanner.Scan() {
err := scanner.Err()
if err != nil {
return err
}
tokens := inter.Tokenize(scanner.Text())
fatal, err := inter.Eval(os.Stdout, tokens)
if fatal {
return err
} else if err != nil {
fmt.Fprintln(os.Stderr, "Error:", err)
}
}
return io.EOF
}
func (inter *Interpreter) Run() error {
if !term.IsTerminal(int(os.Stdin.Fd())) {
return inter.runNonInteractive()
}
defer fmt.Println("\nLeaving atlasi.")
width, height, err := term.GetSize(int(os.Stdin.Fd()))
if err != nil {
panic(err)
}
oldState, err := term.MakeRaw(int(os.Stdin.Fd()))
if err != nil {
panic(err)
}
defer term.Restore(int(os.Stdin.Fd()), oldState)
inter.term = term.NewTerminal(os.Stdin, "atlasi> ")
if err := inter.term.SetSize(width, height); err != nil {
panic(err)
}
inter.term.SetPrompt(
string(inter.term.Escape.Yellow) + "atlasi> " +
string(inter.term.Escape.Reset),
)
for {
line, err := inter.term.ReadLine()
if err != nil {
return err
}
tokens := inter.Tokenize(line)
fatal, err := inter.Eval(inter.term, tokens)
if fatal {
return err
} else if err != nil {
fmt.Fprintln(inter.term, string(inter.term.Escape.Red), "Error:",
string(inter.term.Escape.Reset), err)
}
}
}
|
