preprocess

type FlagInfo ¶

type FlagInfo interface {
	// GetName returns the flag's name (e.g., "identity").
	GetName() string
	// GetShorthand returns the flag's shorthand (e.g., "i").
	GetShorthand() string
	// GetNoOptDefVal returns the flag's NoOptDefVal sentinel value.
	GetNoOptDefVal() string
}

FlagInfo represents the information needed about a flag for preprocessing. This interface matches the methods needed from flags.Flag, avoiding circular imports.

type NoOptDefValPreprocessor ¶

type NoOptDefValPreprocessor struct {
	// contains filtered or unexported fields
}

NoOptDefValPreprocessor rewrites space-separated syntax to equals syntax for flags with NoOptDefVal set.

This works around a Cobra/pflag limitation where NoOptDefVal only works with equals syntax (--flag=value), not space-separated syntax (--flag value). See: https://github.com/spf13/pflag/issues/134, pflag#321, cobra#1962

Example transformation:

Input:  ["--identity", "prod", "plan"]
Output: ["--identity=prod", "plan"]

Without preprocessing, "prod" would be treated as a positional argument because Cobra's NoOptDefVal assumes the user wants the default value when no equals sign is present.

func NewNoOptDefValPreprocessor(flags []FlagInfo) *NoOptDefValPreprocessor

func (p *NoOptDefValPreprocessor) Preprocess(args []string) []string

type Pipeline ¶

type Pipeline struct {
	// contains filtered or unexported fields
}

Pipeline runs multiple preprocessors in sequence. This allows composing multiple preprocessing steps in a clear, testable manner.

func NewPipeline(preprocessors ...Preprocessor) *Pipeline

func (p *Pipeline) Run(args []string) []string

type Preprocessor ¶

type Preprocessor interface {
	// Preprocess transforms args and returns the modified args.
	// Implementations should not modify the input slice.
	Preprocess(args []string) []string
}

Preprocessor transforms command-line arguments before Cobra parses them. This is distinct from compatibility flags (pkg/flags/compat) which translate external tool syntax like Terraform's -var.

Preprocessing handles native Atmos flag behavior that requires argument transformation before Cobra's parsing phase.