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package cmds
import (
"errors"
"fmt"
"os"
"strings"
"gosh/global"
)
// printEnv: prints all environment variables with shell options.
func printEnv() {
vars := os.Environ()
for i := range vars {
fmt.Println(vars[i])
}
if len(global.Options) > 0 {
fmt.Printf("SH_OPTS=%v\n", global.Options)
}
}
// set: sets the shell options
func set(args []string) {
for i := 1; i < len(args); i++ {
if i-1 >= len(global.Options) {
global.Options = append(global.Options, args[i])
continue
}
global.Options[i-1] = args[i]
}
if len(args)-1 < len(global.Options) {
global.Options = global.Options[:len(args)-1]
}
}
// unset: unsets an environment variable
func unset(args []string) error {
if len(args) == 1 || len(args) >= 3 {
return errors.New("usage: unset [name]")
}
os.Unsetenv(args[1])
return nil
}
// export: exports a key-value pair to the environment
// in the form of `name=value`
func export(args []string) error {
if len(args) == 1 || len(args) >= 3 {
return errors.New("usage: export [name=value]")
}
tmp := strings.Split(args[1], "=")
if len(tmp) != 2 {
return errors.New("usage: export [name=value]")
}
return os.Setenv(tmp[0], tmp[1])
}
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