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// Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package label
import (
"errors"
"fmt"
"strings"
"code.gitea.io/gitea/modules/options"
"gopkg.in/yaml.v3"
)
type labelFile struct {
Labels []*Label `yaml:"labels"`
}
// ErrTemplateLoad represents a "ErrTemplateLoad" kind of error.
type ErrTemplateLoad struct {
TemplateFile string
OriginalError error
}
// IsErrTemplateLoad checks if an error is a ErrTemplateLoad.
func IsErrTemplateLoad(err error) bool {
_, ok := err.(ErrTemplateLoad)
return ok
}
func (err ErrTemplateLoad) Error() string {
return fmt.Sprintf("Failed to load label template file '%s': %v", err.TemplateFile, err.OriginalError)
}
// GetTemplateFile loads the label template file by given name,
// then parses and returns a list of name-color pairs and optionally description.
func GetTemplateFile(name string) ([]*Label, error) {
data, err := options.Labels(name + ".yaml")
if err == nil && len(data) > 0 {
return parseYamlFormat(name+".yaml", data)
}
data, err = options.Labels(name + ".yml")
if err == nil && len(data) > 0 {
return parseYamlFormat(name+".yml", data)
}
data, err = options.Labels(name)
if err != nil {
return nil, ErrTemplateLoad{name, fmt.Errorf("GetRepoInitFile: %w", err)}
}
return parseLegacyFormat(name, data)
}
func parseYamlFormat(name string, data []byte) ([]*Label, error) {
lf := &labelFile{}
if err := yaml.Unmarshal(data, lf); err != nil {
return nil, err
}
// Validate label data and fix colors
for _, l := range lf.Labels {
l.Color = strings.TrimSpace(l.Color)
if len(l.Name) == 0 || len(l.Color) == 0 {
return nil, ErrTemplateLoad{name, errors.New("label name and color are required fields")}
}
color, err := NormalizeColor(l.Color)
if err != nil {
return nil, ErrTemplateLoad{name, fmt.Errorf("bad HTML color code '%s' in label: %s", l.Color, l.Name)}
}
l.Color = color
}
return lf.Labels, nil
}
func parseLegacyFormat(name string, data []byte) ([]*Label, error) {
lines := strings.Split(string(data), "\n")
list := make([]*Label, 0, len(lines))
for i := 0; i < len(lines); i++ {
line := strings.TrimSpace(lines[i])
if len(line) == 0 {
continue
}
parts, description, _ := strings.Cut(line, ";")
color, name, ok := strings.Cut(parts, " ")
if !ok {
return nil, ErrTemplateLoad{name, fmt.Errorf("line is malformed: %s", line)}
}
color, err := NormalizeColor(color)
if err != nil {
return nil, ErrTemplateLoad{name, fmt.Errorf("bad HTML color code '%s' in line: %s", color, line)}
}
list = append(list, &Label{
Name: strings.TrimSpace(name),
Color: color,
Description: strings.TrimSpace(description),
})
}
return list, nil
}
// LoadFormatted loads the labels' list of a template file as a string separated by comma
func LoadFormatted(name string) (string, error) {
var buf strings.Builder
list, err := GetTemplateFile(name)
if err != nil {
return "", err
}
for i := 0; i < len(list); i++ {
if i > 0 {
buf.WriteString(", ")
}
buf.WriteString(list[i].Name)
}
return buf.String(), nil
}
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