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// Copyright 2015 The Hugo Authors. All rights reserved.
//
// 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
// 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 (
"time"
src "github.com/gohugoio/hugo/source"
"github.com/pkg/errors"
"github.com/gohugoio/hugo/hugolib"
"path/filepath"
"github.com/gohugoio/hugo/parser"
"github.com/spf13/cast"
"github.com/spf13/cobra"
)
var (
_ cmder = (*convertCmd)(nil)
)
type convertCmd struct {
hugoBuilderCommon
outputDir string
unsafe bool
*baseCmd
}
func newConvertCmd() *convertCmd {
cc := &convertCmd{}
cc.baseCmd = newBaseCmd(&cobra.Command{
Use: "convert",
Short: "Convert your content to different formats",
Long: `Convert your content (e.g. front matter) to different formats.
See convert's subcommands toJSON, toTOML and toYAML for more information.`,
RunE: nil,
})
cc.cmd.AddCommand(
&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 {
return cc.convertContents(rune([]byte(parser.JSONLead)[0]))
},
},
&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 {
return cc.convertContents(rune([]byte(parser.TOMLLead)[0]))
},
},
&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 {
return cc.convertContents(rune([]byte(parser.YAMLLead)[0]))
},
},
)
cc.cmd.PersistentFlags().StringVarP(&cc.outputDir, "output", "o", "", "filesystem path to write files to")
cc.cmd.PersistentFlags().StringVarP(&cc.source, "source", "s", "", "filesystem path to read files relative from")
cc.cmd.PersistentFlags().BoolVar(&cc.unsafe, "unsafe", false, "enable less safe operations, please backup first")
cc.cmd.PersistentFlags().SetAnnotation("source", cobra.BashCompSubdirsInDir, []string{})
return cc
}
func (cc *convertCmd) convertContents(mark rune) error {
if cc.outputDir == "" && !cc.unsafe {
return newUserError("Unsafe operation not allowed, use --unsafe or set a different output path")
}
c, err := initializeConfig(true, false, &cc.hugoBuilderCommon, cc, nil)
if err != nil {
return err
}
h, err := hugolib.NewHugoSites(*c.DepsCfg)
if err != nil {
return err
}
if err := h.Build(hugolib.BuildCfg{SkipRender: true}); err != nil {
return err
}
site := h.Sites[0]
site.Log.FEEDBACK.Println("processing", len(site.AllPages), "content files")
for _, p := range site.AllPages {
if err := cc.convertAndSavePage(p, site, mark); err != nil {
return err
}
}
return nil
}
func (cc *convertCmd) convertAndSavePage(p *hugolib.Page, site *hugolib.Site, mark rune) error {
// The resources are not in .Site.AllPages.
for _, r := range p.Resources.ByType("page") {
if err := cc.convertAndSavePage(r.(*hugolib.Page), site, mark); err != nil {
return err
}
}
if p.Filename() == "" {
// No content file.
return nil
}
site.Log.INFO.Println("Attempting to convert", p.LogicalName())
newPage, err := site.NewPage(p.LogicalName())
if err != nil {
return err
}
f, _ := p.File.(src.ReadableFile)
file, err := f.Open()
if err != nil {
site.Log.ERROR.Println("Error reading file:", p.Path())
file.Close()
return nil
}
psr, err := parser.ReadFrom(file)
if err != nil {
site.Log.ERROR.Println("Error processing file:", p.Path())
file.Close()
return err
}
file.Close()
metadata, err := psr.Metadata()
if err != nil {
site.Log.ERROR.Println("Error processing file:", p.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") {
newMetadata := cast.ToStringMap(metadata)
for k, v := range newMetadata {
switch vv := v.(type) {
case time.Time:
newMetadata[k] = vv.Format(time.RFC3339)
}
}
metadata = newMetadata
}
newPage.SetSourceContent(psr.Content())
if err = newPage.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", newPage.FullFilePath(), err)
return nil
}
newFilename := p.Filename()
if cc.outputDir != "" {
newFilename = filepath.Join(cc.outputDir, p.Dir(), newPage.LogicalName())
}
if err = newPage.SaveSourceAs(newFilename); err != nil {
return errors.Wrapf(err, "Failed to save file %q:", newFilename)
}
return nil
}
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