Add pretty printing, complete Makefile

cmd/eia-client/internal/util/util_pretty.go

@@ -0,0 +1,75 @@
+package util
+
+import (
+	"fmt"
+
+	"github.com/fatih/color"
+	"github.com/goccy/go-yaml/lexer"
+	"github.com/goccy/go-yaml/printer"
+)
+
+const escape = "\x1b"
+
+type PrettyOpts struct {
+	Bytes       []byte
+	LineNumbers bool
+}
+
+func PrettyBytes(opts *PrettyOpts) []byte {
+	tokens := lexer.Tokenize(string(opts.Bytes))
+	var p printer.Printer
+	p.LineNumber = opts.LineNumbers
+	p.LineNumberFormat = func(num int) string {
+		fn := color.New(color.Bold, color.FgHiWhite).SprintFunc()
+		return fn(fmt.Sprintf("%2d | ", num))
+	}
+
+	p.Bool = func() *printer.Property {
+		return &printer.Property{
+			Prefix: format(color.FgHiMagenta),
+			Suffix: format(color.Reset),
+		}
+	}
+	p.Number = func() *printer.Property {
+		return &printer.Property{
+			Prefix: format(color.FgHiMagenta),
+			Suffix: format(color.Reset),
+		}
+	}
+	p.MapKey = func() *printer.Property {
+		return &printer.Property{
+			Prefix: format(color.FgHiCyan),
+			Suffix: format(color.Reset),
+		}
+	}
+	p.Anchor = func() *printer.Property {
+		return &printer.Property{
+			Prefix: format(color.FgHiYellow),
+			Suffix: format(color.Reset),
+		}
+	}
+	p.Alias = func() *printer.Property {
+		return &printer.Property{
+			Prefix: format(color.FgHiYellow),
+			Suffix: format(color.Reset),
+		}
+	}
+	p.String = func() *printer.Property {
+		return &printer.Property{
+			Prefix: format(color.FgHiGreen),
+			Suffix: format(color.Reset),
+		}
+	}
+	p.Comment = func() *printer.Property {
+		return &printer.Property{
+			Prefix: format(color.FgHiBlack),
+			Suffix: format(color.Reset),
+		}
+	}
+
+	return []byte(p.PrintTokens(tokens))
+}
+
+func format(attr color.Attribute) string {
+	return fmt.Sprintf("%s[%dm", escape, attr)
+}