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flag_kv.go
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flag_kv.go
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package command
import (
"fmt"
"strings"
"github.com/hashicorp/hcl/v2"
"github.com/hashicorp/hcl/v2/hclsyntax"
"github.com/hashicorp/terraform/addrs"
"github.com/hashicorp/terraform/tfdiags"
)
// FlagStringKV is a flag.Value implementation for parsing user variables
// from the command-line in the format of '-var key=value', where value is
// only ever a primitive.
type FlagStringKV map[string]string
func (v *FlagStringKV) String() string {
return ""
}
func (v *FlagStringKV) Set(raw string) error {
idx := strings.Index(raw, "=")
if idx == -1 {
return fmt.Errorf("No '=' value in arg: %s", raw)
}
if *v == nil {
*v = make(map[string]string)
}
key, value := raw[0:idx], raw[idx+1:]
(*v)[key] = value
return nil
}
// FlagStringSlice is a flag.Value implementation for parsing targets from the
// command line, e.g. -target=aws_instance.foo -target=aws_vpc.bar
type FlagStringSlice []string
func (v *FlagStringSlice) String() string {
return ""
}
func (v *FlagStringSlice) Set(raw string) error {
*v = append(*v, raw)
return nil
}
// FlagTargetSlice is a flag.Value implementation for parsing target addresses
// from the command line, such as -target=aws_instance.foo -target=aws_vpc.bar .
type FlagTargetSlice []addrs.Targetable
func (v *FlagTargetSlice) String() string {
return ""
}
func (v *FlagTargetSlice) Set(raw string) error {
// FIXME: This is not an ideal way to deal with this because it requires
// us to do parsing in a context where we can't nicely return errors
// to the user.
var diags tfdiags.Diagnostics
synthFilename := fmt.Sprintf("-target=%q", raw)
traversal, syntaxDiags := hclsyntax.ParseTraversalAbs([]byte(raw), synthFilename, hcl.Pos{Line: 1, Column: 1})
diags = diags.Append(syntaxDiags)
if syntaxDiags.HasErrors() {
return diags.Err()
}
target, targetDiags := addrs.ParseTarget(traversal)
diags = diags.Append(targetDiags)
if targetDiags.HasErrors() {
return diags.Err()
}
*v = append(*v, target.Subject)
return nil
}