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utils.go
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/
utils.go
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package ski
import (
"context"
"errors"
"fmt"
"log/slog"
)
var loggerKey byte
// Logger get slog.Logger from the context
func Logger(ctx context.Context) *slog.Logger {
if logger := ctx.Value(&loggerKey); logger != nil {
return logger.(*slog.Logger)
}
return slog.Default()
}
// WithLogger set the slog.Logger to context
func WithLogger(ctx context.Context, logger *slog.Logger) context.Context {
return WithValue(ctx, &loggerKey, logger)
}
// ExecToString convert Executor to string if it implements fmt.Stringer
func ExecToString(exec Executor) string {
switch t := exec.(type) {
case fmt.Stringer:
return t.String()
case _raw:
if s, ok := t.any.(string); ok {
return s
}
}
return ""
}
// StringExecutor to create a new Executor with string argument
func StringExecutor(fn func(str string) (Executor, error)) NewExecutor {
return func(args ...Executor) (Executor, error) {
if len(args) == 0 {
return nil, errors.New("needs 1 string argument")
}
return fn(ExecToString(args[0]))
}
}
// MapKeys returns the keys of the map m.
// The keys will be in an indeterminate order.
func MapKeys[M ~map[K]V, K comparable, V any](m M) []K {
r := make([]K, 0, len(m))
for k := range m {
r = append(r, k)
}
return r
}
// MapValues returns the values of the map m.
// The values will be in an indeterminate order.
func MapValues[M ~map[K]V, K comparable, V any](m M) []V {
r := make([]V, 0, len(m))
for _, v := range m {
r = append(r, v)
}
return r
}