output

package

v0.2.0 Latest Latest Go to latest Published: Oct 2, 2026 License: MIT Imports: 10 Imported by: 0

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Valid go.mod file
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Repository

github.com/matusso/sslknife

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Documentation ¶

Overview ¶

Package output renders command results as human-readable text, JSON or YAML. Commands pass a view model (with json tags) plus a text renderer; machine formats are derived from the view model only, so the JSON schema is what the view model declares and never an internal Go structure.

Index ¶

func RenderTree(w io.Writer, n *Node) error
func VisibleWidth(s string) int
func WriteJSON(w io.Writer, v any) error
func WriteYAML(w io.Writer, v any) error
type Format
- func ParseFormat(s string) (Format, error)
type KV
- func NewKV(style Style) *KV
type Node
- func (n *Node) Add(label string) *Node
type Printer
- func New(out, errw io.Writer, format Format, noColor, quiet bool) *Printer
type Style
type Table
- func NewTable(headers ...string) *Table

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

func RenderTree ¶

func RenderTree(w io.Writer, n *Node) error

RenderTree writes n with box-drawing connectors.

func VisibleWidth ¶

func VisibleWidth(s string) int

VisibleWidth returns the printed width of s, ignoring ANSI sequences.

func WriteJSON ¶

func WriteJSON(w io.Writer, v any) error

WriteJSON writes indented JSON with a trailing newline.

func WriteYAML ¶

func WriteYAML(w io.Writer, v any) error

WriteYAML writes v as YAML using its JSON field names and order. The value is first encoded as JSON, then decoded into a yaml.Node (which keeps key order) and re-encoded in block style.

Types ¶

type Format ¶

type Format string

Format selects the output encoding.

const (
	Text Format = "text"
	JSON Format = "json"
	YAML Format = "yaml"
	Raw  Format = "raw"
)

func ParseFormat ¶

func ParseFormat(s string) (Format, error)

ParseFormat validates a --format value. "table" is an alias of text.

type KV ¶

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

KV renders aligned "Label: value" blocks, optionally under headings. Empty values are skipped so renderers can add optional fields freely.

func NewKV ¶

func NewKV(style Style) *KV

NewKV creates a key/value block.

func (*KV) Add ¶

func (k *KV) Add(key, value string) *KV

Add adds a field; skipped when value is empty.

func (*KV) Addf ¶

func (k *KV) Addf(key, format string, args ...any) *KV

Addf adds a formatted field.

func (*KV) Heading ¶

func (k *KV) Heading(title string) *KV

Heading starts a new titled section.

func (*KV) List ¶

func (k *KV) List(key string, values []string) *KV

List adds a multi-line field; skipped when values is empty.

func (*KV) Render ¶

func (k *KV) Render(w io.Writer) error

Render writes all sections. Keys are aligned per section.

type Node ¶

type Node struct {
	Label    string
	Children []*Node
}

Node is an element of a printable tree, e.g. a certificate chain.

func (*Node) Add ¶

func (n *Node) Add(label string) *Node

Add appends a child and returns it.

type Printer ¶

type Printer struct {
	Out    io.Writer
	Err    io.Writer
	Format Format
	Style  Style
	Quiet  bool
}

Printer writes results to Out and diagnostics to Err.

func New ¶

func New(out, errw io.Writer, format Format, noColor, quiet bool) *Printer

New creates a printer. Colour is enabled only for terminals, and never when NO_COLOR is set or noColor is true.

func (*Printer) Emit ¶

func (p *Printer) Emit(v any, text func(w io.Writer) error) error

Emit writes v in the selected machine format, or calls text for text/raw output. text may be nil when a command has no human rendering.

func (*Printer) Infof ¶

func (p *Printer) Infof(format string, args ...any)

Infof prints a progress or status message to stderr unless quiet.

func (*Printer) Machine ¶

func (p *Printer) Machine() bool

Machine reports whether output is JSON or YAML.

func (*Printer) Warnf ¶

func (p *Printer) Warnf(format string, args ...any)

Warnf prints a warning to stderr; warnings are shown even in quiet mode because they usually concern security.

type Style ¶

type Style struct{ Enabled bool }

Style applies ANSI styling when enabled.

func (Style) Blue ¶

func (s Style) Blue(v string) string

func (Style) Bold ¶

func (s Style) Bold(v string) string

func (Style) Cyan ¶

func (s Style) Cyan(v string) string

func (Style) Dim ¶

func (s Style) Dim(v string) string

func (Style) Green ¶

func (s Style) Green(v string) string

func (Style) Level ¶

func (s Style) Level(level string) string

Level colours a severity or status word consistently across commands.

func (Style) Red ¶

func (s Style) Red(v string) string

func (Style) Yellow ¶

func (s Style) Yellow(v string) string

type Table ¶

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

Table renders aligned columns. Cells may contain ANSI colour codes.

func NewTable ¶

func NewTable(headers ...string) *Table

NewTable creates a table with the given column headers.

func (*Table) Len ¶

func (t *Table) Len() int

Len returns the number of data rows.

func (*Table) Render ¶

func (t *Table) Render(w io.Writer, style Style) error

Render writes the table. Headers are styled bold/dim when style is enabled.

func (*Table) Row ¶

func (t *Table) Row(cells ...string)

Row appends a row; missing cells are rendered empty.

Source Files ¶

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