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// Copyright © 2019 The Homeport Team
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package neat
import (
"bufio"
"bytes"
"fmt"
"strings"
colorful "github.com/lucasb-eyer/go-colorful"
yamlv2 "gopkg.in/yaml.v2"
yamlv3 "gopkg.in/yaml.v3"
"github.com/gonvenience/bunt"
)
// DefaultColorSchema is a prepared usable color schema for the neat output
// processor which is loosly based upon the colors used by Atom
var DefaultColorSchema = map[string]colorful.Color{
"documentStart": bunt.LightSlateGray,
"keyColor": bunt.IndianRed,
"indentLineColor": {R: 0.14, G: 0.14, B: 0.14},
"scalarDefaultColor": bunt.PaleGreen,
"boolColor": bunt.Moccasin,
"floatColor": bunt.Orange,
"intColor": bunt.MediumPurple,
"multiLineTextColor": bunt.Aquamarine,
"nullColor": bunt.DarkOrange,
"binaryColor": bunt.Aqua,
"emptyStructures": bunt.PaleGoldenrod,
"commentColor": bunt.DimGray,
"anchorColor": bunt.CornflowerBlue,
}
// OutputProcessor provides the functionality to output neat YAML strings using
// colors and text emphasis
type OutputProcessor struct {
data *bytes.Buffer
out *bufio.Writer
colorSchema *map[string]colorful.Color
useIndentLines bool
boldKeys bool
}
// NewOutputProcessor creates a new output processor including the required
// internals using the provided preferences
func NewOutputProcessor(useIndentLines bool, boldKeys bool, colorSchema *map[string]colorful.Color) *OutputProcessor {
bytesBuffer := &bytes.Buffer{}
writer := bufio.NewWriter(bytesBuffer)
// Only use indent lines in color mode
if !bunt.UseColors() {
useIndentLines = false
}
return &OutputProcessor{
data: bytesBuffer,
out: writer,
useIndentLines: useIndentLines,
boldKeys: boldKeys,
colorSchema: colorSchema,
}
}
// Deprecated: Use colorizef instead
func (p *OutputProcessor) colorize(text string, colorName string) string {
if p.colorSchema != nil {
if value, ok := (*p.colorSchema)[colorName]; ok {
return bunt.Style(text, bunt.Foreground(value))
}
}
return text
}
func (p *OutputProcessor) colorizef(colorName string, format string, a ...interface{}) string {
var text = fmt.Sprintf(format, a...)
if p.colorSchema != nil {
if value, ok := (*p.colorSchema)[colorName]; ok {
return bunt.Style(text, bunt.Foreground(value))
}
}
return text
}
func (p *OutputProcessor) determineColorByType(obj interface{}) string {
color := "scalarDefaultColor"
switch t := obj.(type) {
case *yamlv3.Node:
switch t.Tag {
case "!!str":
if len(strings.Split(strings.TrimSpace(t.Value), "\n")) > 1 {
color = "multiLineTextColor"
}
case "!!int":
color = "intColor"
case "!!float":
color = "floatColor"
case "!!bool":
color = "boolColor"
case "!!null":
color = "nullColor"
}
case bool:
color = "boolColor"
case float32, float64:
color = "floatColor"
case int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64, uintptr:
color = "intColor"
case string:
if len(strings.Split(strings.TrimSpace(t), "\n")) > 1 {
color = "multiLineTextColor"
}
}
return color
}
func (p *OutputProcessor) isScalar(obj interface{}) bool {
switch tobj := obj.(type) {
case *yamlv3.Node:
return tobj.Kind == yamlv3.ScalarNode
case yamlv2.MapSlice, []interface{}, []yamlv2.MapSlice:
return false
default:
return true
}
}
func (p *OutputProcessor) simplify(list []yamlv2.MapSlice) []interface{} {
result := make([]interface{}, len(list))
for idx, value := range list {
result[idx] = value
}
return result
}
func (p *OutputProcessor) prefixAdd() string {
if p.useIndentLines {
return p.colorize("│ ", "indentLineColor")
}
return p.colorize(" ", "indentLineColor")
}
func followAlias(node *yamlv3.Node) *yamlv3.Node {
if node != nil && node.Alias != nil {
return followAlias(node.Alias)
}
return node
}
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