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internal/flags: fix loading env vars for custom flags (#28117)

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Péter Szilágyi 2023-09-14 12:43:58 +03:00 committed by GitHub
parent 8514d665ee
commit ee654626ad
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1 changed files with 30 additions and 0 deletions
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30
internal/flags/flags.go
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@ -20,11 +20,13 @@ import (
"encoding"
"errors"
"flag"
"fmt"
"math/big"
"os"
"os/user"
"path/filepath"
"strings"
"syscall"
"github.com/ethereum/go-ethereum/common/math"
"github.com/urfave/cli/v2"
@ -80,6 +82,14 @@ func (f *DirectoryFlag) String() string { return cli.FlagStringer(f) }
// Apply called by cli library, grabs variable from environment (if in env)
// and adds variable to flag set for parsing.
func (f *DirectoryFlag) Apply(set *flag.FlagSet) error {
for _, envVar := range f.EnvVars {
envVar = strings.TrimSpace(envVar)
if value, found := syscall.Getenv(envVar); found {
f.Value.Set(value)
f.HasBeenSet = true
break
}
}
eachName(f, func(name string) {
set.Var(&f.Value, f.Name, f.Usage)
})
@ -167,6 +177,16 @@ func (f *TextMarshalerFlag) IsSet() bool { return f.HasBeenSet }
func (f *TextMarshalerFlag) String() string { return cli.FlagStringer(f) }
func (f *TextMarshalerFlag) Apply(set *flag.FlagSet) error {
for _, envVar := range f.EnvVars {
envVar = strings.TrimSpace(envVar)
if value, found := syscall.Getenv(envVar); found {
if err := f.Value.UnmarshalText([]byte(value)); err != nil {
return fmt.Errorf("could not parse %q from environment variable %q for flag %s: %s", value, envVar, f.Name, err)
}
f.HasBeenSet = true
break
}
}
eachName(f, func(name string) {
set.Var(textMarshalerVal{f.Value}, f.Name, f.Usage)
})
@ -249,6 +269,16 @@ func (f *BigFlag) IsSet() bool { return f.HasBeenSet }
func (f *BigFlag) String() string { return cli.FlagStringer(f) }
func (f *BigFlag) Apply(set *flag.FlagSet) error {
for _, envVar := range f.EnvVars {
envVar = strings.TrimSpace(envVar)
if value, found := syscall.Getenv(envVar); found {
if _, ok := f.Value.SetString(value, 10); !ok {
return fmt.Errorf("could not parse %q from environment variable %q for flag %s", value, envVar, f.Name)
}
f.HasBeenSet = true
break
}
}
eachName(f, func(name string) {
f.Value = new(big.Int)
set.Var((*bigValue)(f.Value), f.Name, f.Usage)