mirror of
https://github.com/gohugoio/hugo.git
synced 2024-11-21 20:46:30 -05:00
620 lines
16 KiB
Go
620 lines
16 KiB
Go
// Copyright 2023 The Hugo Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package commands
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import (
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"bytes"
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"context"
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"errors"
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"fmt"
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"io"
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"log"
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"os"
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"path/filepath"
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"regexp"
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"strconv"
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"strings"
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"time"
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"unicode"
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"github.com/bep/simplecobra"
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"github.com/gohugoio/hugo/common/htime"
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"github.com/gohugoio/hugo/common/hugio"
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"github.com/gohugoio/hugo/common/maps"
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"github.com/gohugoio/hugo/helpers"
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"github.com/gohugoio/hugo/hugofs"
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"github.com/gohugoio/hugo/parser"
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"github.com/gohugoio/hugo/parser/metadecoders"
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"github.com/gohugoio/hugo/parser/pageparser"
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"github.com/spf13/afero"
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"github.com/spf13/cobra"
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)
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func newImportCommand() *importCommand {
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var c *importCommand
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c = &importCommand{
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commands: []simplecobra.Commander{
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&simpleCommand{
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name: "jekyll",
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short: "hugo import from Jekyll",
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long: `hugo import from Jekyll.
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Import from Jekyll requires two paths, e.g. ` + "`hugo import jekyll jekyll_root_path target_path`.",
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run: func(ctx context.Context, cd *simplecobra.Commandeer, r *rootCommand, args []string) error {
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if len(args) < 2 {
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return newUserError(`import from jekyll requires two paths, e.g. ` + "`hugo import jekyll jekyll_root_path target_path`.")
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}
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return c.importFromJekyll(args)
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},
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withc: func(cmd *cobra.Command, r *rootCommand) {
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cmd.Flags().BoolVar(&c.force, "force", false, "allow import into non-empty target directory")
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},
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},
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},
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}
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return c
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}
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type importCommand struct {
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r *rootCommand
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force bool
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commands []simplecobra.Commander
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}
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func (c *importCommand) Commands() []simplecobra.Commander {
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return c.commands
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}
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func (c *importCommand) Name() string {
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return "import"
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}
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func (c *importCommand) Run(ctx context.Context, cd *simplecobra.Commandeer, args []string) error {
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return nil
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}
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func (c *importCommand) Init(cd *simplecobra.Commandeer) error {
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cmd := cd.CobraCommand
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cmd.Short = "Import your site from others."
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cmd.Long = `Import your site from other web site generators like Jekyll.
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Import requires a subcommand, e.g. ` + "`hugo import jekyll jekyll_root_path target_path`."
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return nil
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}
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func (c *importCommand) PreRun(cd, runner *simplecobra.Commandeer) error {
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c.r = cd.Root.Command.(*rootCommand)
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return nil
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}
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func (i *importCommand) createConfigFromJekyll(fs afero.Fs, inpath string, kind metadecoders.Format, jekyllConfig map[string]any) (err error) {
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title := "My New Hugo Site"
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baseURL := "http://example.org/"
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for key, value := range jekyllConfig {
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lowerKey := strings.ToLower(key)
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switch lowerKey {
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case "title":
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if str, ok := value.(string); ok {
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title = str
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}
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case "url":
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if str, ok := value.(string); ok {
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baseURL = str
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}
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}
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}
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in := map[string]any{
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"baseURL": baseURL,
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"title": title,
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"languageCode": "en-us",
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"disablePathToLower": true,
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}
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var buf bytes.Buffer
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err = parser.InterfaceToConfig(in, kind, &buf)
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if err != nil {
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return err
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}
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return helpers.WriteToDisk(filepath.Join(inpath, "hugo."+string(kind)), &buf, fs)
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}
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func (c *importCommand) getJekyllDirInfo(fs afero.Fs, jekyllRoot string) (map[string]bool, bool) {
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postDirs := make(map[string]bool)
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hasAnyPost := false
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if entries, err := os.ReadDir(jekyllRoot); err == nil {
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for _, entry := range entries {
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if entry.IsDir() {
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subDir := filepath.Join(jekyllRoot, entry.Name())
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if isPostDir, hasAnyPostInDir := c.retrieveJekyllPostDir(fs, subDir); isPostDir {
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postDirs[entry.Name()] = hasAnyPostInDir
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if hasAnyPostInDir {
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hasAnyPost = true
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}
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}
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}
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}
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}
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return postDirs, hasAnyPost
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}
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func (c *importCommand) createSiteFromJekyll(jekyllRoot, targetDir string, jekyllPostDirs map[string]bool) error {
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fs := &afero.OsFs{}
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if exists, _ := helpers.Exists(targetDir, fs); exists {
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if isDir, _ := helpers.IsDir(targetDir, fs); !isDir {
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return errors.New("target path \"" + targetDir + "\" exists but is not a directory")
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}
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isEmpty, _ := helpers.IsEmpty(targetDir, fs)
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if !isEmpty && !c.force {
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return errors.New("target path \"" + targetDir + "\" exists and is not empty")
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}
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}
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jekyllConfig := c.loadJekyllConfig(fs, jekyllRoot)
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mkdir(targetDir, "layouts")
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mkdir(targetDir, "content")
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mkdir(targetDir, "archetypes")
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mkdir(targetDir, "static")
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mkdir(targetDir, "data")
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mkdir(targetDir, "themes")
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c.createConfigFromJekyll(fs, targetDir, "yaml", jekyllConfig)
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c.copyJekyllFilesAndFolders(jekyllRoot, filepath.Join(targetDir, "static"), jekyllPostDirs)
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return nil
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}
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func (c *importCommand) convertJekyllContent(m any, content string) (string, error) {
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metadata, _ := maps.ToStringMapE(m)
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lines := strings.Split(content, "\n")
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var resultLines []string
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for _, line := range lines {
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resultLines = append(resultLines, strings.Trim(line, "\r\n"))
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}
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content = strings.Join(resultLines, "\n")
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excerptSep := "<!--more-->"
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if value, ok := metadata["excerpt_separator"]; ok {
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if str, strOk := value.(string); strOk {
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content = strings.Replace(content, strings.TrimSpace(str), excerptSep, -1)
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}
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}
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replaceList := []struct {
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re *regexp.Regexp
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replace string
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}{
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{regexp.MustCompile("(?i)<!-- more -->"), "<!--more-->"},
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{regexp.MustCompile(`\{%\s*raw\s*%\}\s*(.*?)\s*\{%\s*endraw\s*%\}`), "$1"},
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{regexp.MustCompile(`{%\s*endhighlight\s*%}`), "{{< / highlight >}}"},
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}
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for _, replace := range replaceList {
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content = replace.re.ReplaceAllString(content, replace.replace)
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}
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replaceListFunc := []struct {
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re *regexp.Regexp
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replace func(string) string
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}{
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// Octopress image tag: http://octopress.org/docs/plugins/image-tag/
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{regexp.MustCompile(`{%\s+img\s*(.*?)\s*%}`), c.replaceImageTag},
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{regexp.MustCompile(`{%\s*highlight\s*(.*?)\s*%}`), c.replaceHighlightTag},
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}
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for _, replace := range replaceListFunc {
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content = replace.re.ReplaceAllStringFunc(content, replace.replace)
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}
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var buf bytes.Buffer
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if len(metadata) != 0 {
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err := parser.InterfaceToFrontMatter(m, metadecoders.YAML, &buf)
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if err != nil {
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return "", err
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}
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}
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buf.WriteString(content)
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return buf.String(), nil
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}
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func (c *importCommand) convertJekyllMetaData(m any, postName string, postDate time.Time, draft bool) (any, error) {
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metadata, err := maps.ToStringMapE(m)
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if err != nil {
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return nil, err
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}
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if draft {
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metadata["draft"] = true
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}
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for key, value := range metadata {
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lowerKey := strings.ToLower(key)
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switch lowerKey {
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case "layout":
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delete(metadata, key)
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case "permalink":
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if str, ok := value.(string); ok {
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metadata["url"] = str
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}
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delete(metadata, key)
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case "category":
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if str, ok := value.(string); ok {
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metadata["categories"] = []string{str}
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}
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delete(metadata, key)
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case "excerpt_separator":
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if key != lowerKey {
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delete(metadata, key)
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metadata[lowerKey] = value
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}
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case "date":
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if str, ok := value.(string); ok {
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re := regexp.MustCompile(`(\d+):(\d+):(\d+)`)
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r := re.FindAllStringSubmatch(str, -1)
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if len(r) > 0 {
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hour, _ := strconv.Atoi(r[0][1])
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minute, _ := strconv.Atoi(r[0][2])
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second, _ := strconv.Atoi(r[0][3])
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postDate = time.Date(postDate.Year(), postDate.Month(), postDate.Day(), hour, minute, second, 0, time.UTC)
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}
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}
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delete(metadata, key)
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}
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}
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metadata["date"] = postDate.Format(time.RFC3339)
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return metadata, nil
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}
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func (c *importCommand) convertJekyllPost(path, relPath, targetDir string, draft bool) error {
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log.Println("Converting", path)
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filename := filepath.Base(path)
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postDate, postName, err := c.parseJekyllFilename(filename)
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if err != nil {
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c.r.Printf("Failed to parse filename '%s': %s. Skipping.", filename, err)
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return nil
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}
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log.Println(filename, postDate, postName)
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targetFile := filepath.Join(targetDir, relPath)
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targetParentDir := filepath.Dir(targetFile)
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os.MkdirAll(targetParentDir, 0777)
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contentBytes, err := os.ReadFile(path)
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if err != nil {
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c.r.logger.Errorln("Read file error:", path)
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return err
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}
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pf, err := pageparser.ParseFrontMatterAndContent(bytes.NewReader(contentBytes))
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if err != nil {
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return fmt.Errorf("failed to parse file %q: %s", filename, err)
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}
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newmetadata, err := c.convertJekyllMetaData(pf.FrontMatter, postName, postDate, draft)
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if err != nil {
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return fmt.Errorf("failed to convert metadata for file %q: %s", filename, err)
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}
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content, err := c.convertJekyllContent(newmetadata, string(pf.Content))
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if err != nil {
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return fmt.Errorf("failed to convert content for file %q: %s", filename, err)
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}
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fs := hugofs.Os
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if err := helpers.WriteToDisk(targetFile, strings.NewReader(content), fs); err != nil {
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return fmt.Errorf("failed to save file %q: %s", filename, err)
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}
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return nil
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}
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func (c *importCommand) copyJekyllFilesAndFolders(jekyllRoot, dest string, jekyllPostDirs map[string]bool) (err error) {
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fs := hugofs.Os
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fi, err := fs.Stat(jekyllRoot)
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if err != nil {
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return err
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}
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if !fi.IsDir() {
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return errors.New(jekyllRoot + " is not a directory")
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}
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err = os.MkdirAll(dest, fi.Mode())
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if err != nil {
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return err
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}
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entries, err := os.ReadDir(jekyllRoot)
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if err != nil {
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return err
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}
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for _, entry := range entries {
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sfp := filepath.Join(jekyllRoot, entry.Name())
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dfp := filepath.Join(dest, entry.Name())
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if entry.IsDir() {
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if entry.Name()[0] != '_' && entry.Name()[0] != '.' {
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if _, ok := jekyllPostDirs[entry.Name()]; !ok {
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err = hugio.CopyDir(fs, sfp, dfp, nil)
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if err != nil {
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c.r.logger.Errorln(err)
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}
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}
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}
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} else {
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lowerEntryName := strings.ToLower(entry.Name())
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exceptSuffix := []string{
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".md", ".markdown", ".html", ".htm",
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".xml", ".textile", "rakefile", "gemfile", ".lock",
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}
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isExcept := false
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for _, suffix := range exceptSuffix {
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if strings.HasSuffix(lowerEntryName, suffix) {
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isExcept = true
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break
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}
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}
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if !isExcept && entry.Name()[0] != '.' && entry.Name()[0] != '_' {
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err = hugio.CopyFile(fs, sfp, dfp)
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if err != nil {
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c.r.logger.Errorln(err)
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}
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}
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}
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}
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return nil
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}
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func (c *importCommand) importFromJekyll(args []string) error {
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jekyllRoot, err := filepath.Abs(filepath.Clean(args[0]))
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if err != nil {
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return newUserError("path error:", args[0])
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}
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targetDir, err := filepath.Abs(filepath.Clean(args[1]))
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if err != nil {
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return newUserError("path error:", args[1])
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}
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c.r.Println("Import Jekyll from:", jekyllRoot, "to:", targetDir)
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if strings.HasPrefix(filepath.Dir(targetDir), jekyllRoot) {
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return newUserError("abort: target path should not be inside the Jekyll root")
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}
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fs := afero.NewOsFs()
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jekyllPostDirs, hasAnyPost := c.getJekyllDirInfo(fs, jekyllRoot)
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if !hasAnyPost {
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return errors.New("abort: jekyll root contains neither posts nor drafts")
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}
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err = c.createSiteFromJekyll(jekyllRoot, targetDir, jekyllPostDirs)
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if err != nil {
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return newUserError(err)
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}
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c.r.Println("Importing...")
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fileCount := 0
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callback := func(path string, fi hugofs.FileMetaInfo, err error) error {
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if err != nil {
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return err
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}
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if fi.IsDir() {
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return nil
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}
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relPath, err := filepath.Rel(jekyllRoot, path)
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if err != nil {
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return newUserError("get rel path error:", path)
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}
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relPath = filepath.ToSlash(relPath)
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draft := false
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switch {
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case strings.Contains(relPath, "_posts/"):
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relPath = filepath.Join("content/post", strings.Replace(relPath, "_posts/", "", -1))
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case strings.Contains(relPath, "_drafts/"):
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relPath = filepath.Join("content/draft", strings.Replace(relPath, "_drafts/", "", -1))
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draft = true
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default:
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return nil
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}
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fileCount++
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return c.convertJekyllPost(path, relPath, targetDir, draft)
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}
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for jekyllPostDir, hasAnyPostInDir := range jekyllPostDirs {
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if hasAnyPostInDir {
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if err = helpers.SymbolicWalk(hugofs.Os, filepath.Join(jekyllRoot, jekyllPostDir), callback); err != nil {
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return err
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}
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}
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}
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c.r.Println("Congratulations!", fileCount, "post(s) imported!")
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c.r.Println("Now, start Hugo by yourself:\n" +
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"$ git clone https://github.com/spf13/herring-cove.git " + args[1] + "/themes/herring-cove")
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c.r.Println("$ cd " + args[1] + "\n$ hugo server --theme=herring-cove")
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return nil
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}
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func (c *importCommand) loadJekyllConfig(fs afero.Fs, jekyllRoot string) map[string]any {
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path := filepath.Join(jekyllRoot, "_config.yml")
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exists, err := helpers.Exists(path, fs)
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if err != nil || !exists {
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c.r.Println("_config.yaml not found: Is the specified Jekyll root correct?")
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return nil
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}
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f, err := fs.Open(path)
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if err != nil {
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return nil
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}
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defer f.Close()
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b, err := io.ReadAll(f)
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if err != nil {
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return nil
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}
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m, err := metadecoders.Default.UnmarshalToMap(b, metadecoders.YAML)
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if err != nil {
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return nil
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}
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return m
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}
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func (c *importCommand) parseJekyllFilename(filename string) (time.Time, string, error) {
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re := regexp.MustCompile(`(\d+-\d+-\d+)-(.+)\..*`)
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r := re.FindAllStringSubmatch(filename, -1)
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if len(r) == 0 {
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return htime.Now(), "", errors.New("filename not match")
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}
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postDate, err := time.Parse("2006-1-2", r[0][1])
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if err != nil {
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return htime.Now(), "", err
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}
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postName := r[0][2]
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return postDate, postName, nil
|
|
}
|
|
|
|
func (c *importCommand) replaceHighlightTag(match string) string {
|
|
r := regexp.MustCompile(`{%\s*highlight\s*(.*?)\s*%}`)
|
|
parts := r.FindStringSubmatch(match)
|
|
lastQuote := rune(0)
|
|
f := func(c rune) bool {
|
|
switch {
|
|
case c == lastQuote:
|
|
lastQuote = rune(0)
|
|
return false
|
|
case lastQuote != rune(0):
|
|
return false
|
|
case unicode.In(c, unicode.Quotation_Mark):
|
|
lastQuote = c
|
|
return false
|
|
default:
|
|
return unicode.IsSpace(c)
|
|
}
|
|
}
|
|
// splitting string by space but considering quoted section
|
|
items := strings.FieldsFunc(parts[1], f)
|
|
|
|
result := bytes.NewBufferString("{{< highlight ")
|
|
result.WriteString(items[0]) // language
|
|
options := items[1:]
|
|
for i, opt := range options {
|
|
opt = strings.Replace(opt, "\"", "", -1)
|
|
if opt == "linenos" {
|
|
opt = "linenos=table"
|
|
}
|
|
if i == 0 {
|
|
opt = " \"" + opt
|
|
}
|
|
if i < len(options)-1 {
|
|
opt += ","
|
|
} else if i == len(options)-1 {
|
|
opt += "\""
|
|
}
|
|
result.WriteString(opt)
|
|
}
|
|
|
|
result.WriteString(" >}}")
|
|
return result.String()
|
|
}
|
|
|
|
func (c *importCommand) replaceImageTag(match string) string {
|
|
r := regexp.MustCompile(`{%\s+img\s*(\p{L}*)\s+([\S]*/[\S]+)\s+(\d*)\s*(\d*)\s*(.*?)\s*%}`)
|
|
result := bytes.NewBufferString("{{< figure ")
|
|
parts := r.FindStringSubmatch(match)
|
|
// Index 0 is the entire string, ignore
|
|
c.replaceOptionalPart(result, "class", parts[1])
|
|
c.replaceOptionalPart(result, "src", parts[2])
|
|
c.replaceOptionalPart(result, "width", parts[3])
|
|
c.replaceOptionalPart(result, "height", parts[4])
|
|
// title + alt
|
|
part := parts[5]
|
|
if len(part) > 0 {
|
|
splits := strings.Split(part, "'")
|
|
lenSplits := len(splits)
|
|
if lenSplits == 1 {
|
|
c.replaceOptionalPart(result, "title", splits[0])
|
|
} else if lenSplits == 3 {
|
|
c.replaceOptionalPart(result, "title", splits[1])
|
|
} else if lenSplits == 5 {
|
|
c.replaceOptionalPart(result, "title", splits[1])
|
|
c.replaceOptionalPart(result, "alt", splits[3])
|
|
}
|
|
}
|
|
result.WriteString(">}}")
|
|
return result.String()
|
|
}
|
|
|
|
func (c *importCommand) replaceOptionalPart(buffer *bytes.Buffer, partName string, part string) {
|
|
if len(part) > 0 {
|
|
buffer.WriteString(partName + "=\"" + part + "\" ")
|
|
}
|
|
}
|
|
|
|
func (c *importCommand) retrieveJekyllPostDir(fs afero.Fs, dir string) (bool, bool) {
|
|
if strings.HasSuffix(dir, "_posts") || strings.HasSuffix(dir, "_drafts") {
|
|
isEmpty, _ := helpers.IsEmpty(dir, fs)
|
|
return true, !isEmpty
|
|
}
|
|
|
|
if entries, err := os.ReadDir(dir); err == nil {
|
|
for _, entry := range entries {
|
|
if entry.IsDir() {
|
|
subDir := filepath.Join(dir, entry.Name())
|
|
if isPostDir, hasAnyPost := c.retrieveJekyllPostDir(fs, subDir); isPostDir {
|
|
return isPostDir, hasAnyPost
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return false, true
|
|
}
|