hugo/commands/convert.go

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// Copyright 2015 The Hugo Authors. All rights reserved.
//
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// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package commands
import (
"errors"
"fmt"
"path/filepath"
"time"
"github.com/spf13/cast"
"github.com/spf13/cobra"
"github.com/gohugoio/hugo/hugolib"
"github.com/gohugoio/hugo/parser"
)
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var outputDir string
var unsafe bool
var convertCmd = &cobra.Command{
Use: "convert",
Short: "Convert your content to different formats",
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Long: `Convert your content (e.g. front matter) to different formats.
See convert's subcommands toJSON, toTOML and toYAML for more information.`,
RunE: nil,
}
var toJSONCmd = &cobra.Command{
Use: "toJSON",
Short: "Convert front matter to JSON",
Long: `toJSON converts all front matter in the content directory
to use JSON for the front matter.`,
RunE: func(cmd *cobra.Command, args []string) error {
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return convertContents(rune([]byte(parser.JSONLead)[0]))
},
}
var toTOMLCmd = &cobra.Command{
Use: "toTOML",
Short: "Convert front matter to TOML",
Long: `toTOML converts all front matter in the content directory
to use TOML for the front matter.`,
RunE: func(cmd *cobra.Command, args []string) error {
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return convertContents(rune([]byte(parser.TOMLLead)[0]))
},
}
var toYAMLCmd = &cobra.Command{
Use: "toYAML",
Short: "Convert front matter to YAML",
Long: `toYAML converts all front matter in the content directory
to use YAML for the front matter.`,
RunE: func(cmd *cobra.Command, args []string) error {
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return convertContents(rune([]byte(parser.YAMLLead)[0]))
},
}
func init() {
convertCmd.AddCommand(toJSONCmd)
convertCmd.AddCommand(toTOMLCmd)
convertCmd.AddCommand(toYAMLCmd)
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convertCmd.PersistentFlags().StringVarP(&outputDir, "output", "o", "", "filesystem path to write files to")
convertCmd.PersistentFlags().StringVarP(&source, "source", "s", "", "filesystem path to read files relative from")
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convertCmd.PersistentFlags().BoolVar(&unsafe, "unsafe", false, "enable less safe operations, please backup first")
convertCmd.PersistentFlags().SetAnnotation("source", cobra.BashCompSubdirsInDir, []string{})
}
func convertContents(mark rune) error {
cfg, err := InitializeConfig()
if err != nil {
return err
}
h, err := hugolib.NewHugoSites(*cfg)
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if err != nil {
return err
}
site := h.Sites[0]
if err = site.Initialise(); err != nil {
return err
}
if site.Source == nil {
panic("site.Source not set")
}
if len(site.Source.Files()) < 1 {
return errors.New("No source files found")
}
contentDir := site.PathSpec.AbsPathify(site.Cfg.GetString("contentDir"))
site.Log.FEEDBACK.Println("processing", len(site.Source.Files()), "content files")
for _, file := range site.Source.Files() {
site.Log.INFO.Println("Attempting to convert", file.LogicalName())
page, err := site.NewPage(file.LogicalName())
if err != nil {
return err
}
psr, err := parser.ReadFrom(file.Contents)
if err != nil {
site.Log.ERROR.Println("Error processing file:", file.Path())
return err
}
metadata, err := psr.Metadata()
if err != nil {
site.Log.ERROR.Println("Error processing file:", file.Path())
return err
}
// better handling of dates in formats that don't have support for them
if mark == parser.FormatToLeadRune("json") || mark == parser.FormatToLeadRune("yaml") || mark == parser.FormatToLeadRune("toml") {
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newMetadata := cast.ToStringMap(metadata)
for k, v := range newMetadata {
switch vv := v.(type) {
case time.Time:
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newMetadata[k] = vv.Format(time.RFC3339)
}
}
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metadata = newMetadata
}
page.SetDir(filepath.Join(contentDir, file.Dir()))
page.SetSourceContent(psr.Content())
if err = page.SetSourceMetaData(metadata, mark); err != nil {
site.Log.ERROR.Printf("Failed to set source metadata for file %q: %s. For more info see For more info see https://github.com/gohugoio/hugo/issues/2458", page.FullFilePath(), err)
continue
}
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if outputDir != "" {
if err = page.SaveSourceAs(filepath.Join(outputDir, page.FullFilePath())); err != nil {
return fmt.Errorf("Failed to save file %q: %s", page.FullFilePath(), err)
}
} else {
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if unsafe {
if err = page.SaveSource(); err != nil {
return fmt.Errorf("Failed to save file %q: %s", page.FullFilePath(), err)
}
} else {
site.Log.FEEDBACK.Println("Unsafe operation not allowed, use --unsafe or set a different output path")
}
}
}
return nil
}