diff options
Diffstat (limited to 'cmd/build')
| -rw-r--r-- | cmd/build/build.go | 408 | ||||
| -rw-r--r-- | cmd/build/main.go | 52 | ||||
| -rw-r--r-- | cmd/build/posts.go | 121 | ||||
| -rw-r--r-- | cmd/build/template.go | 275 |
4 files changed, 451 insertions, 405 deletions
diff --git a/cmd/build/build.go b/cmd/build/build.go index f165361..9b58095 100644 --- a/cmd/build/build.go +++ b/cmd/build/build.go @@ -1,391 +1,21 @@ package main import ( - "bytes" - "encoding/xml" "fmt" "io" - "io/fs" "log" "log/slog" "net/url" "os" "path" - "path/filepath" "slices" - "strings" - "time" - "website/internal/atom" "website/internal/config" - "github.com/BurntSushi/toml" - "github.com/PuerkitoBio/goquery" - "github.com/a-h/htmlformat" - "github.com/adrg/frontmatter" - "github.com/antchfx/xmlquery" - "github.com/antchfx/xpath" - "github.com/ardanlabs/conf/v3" - mapset "github.com/deckarep/golang-set/v2" cp "github.com/otiai10/copy" "github.com/pkg/errors" - "github.com/yuin/goldmark" - "github.com/yuin/goldmark/extension" - htmlrenderer "github.com/yuin/goldmark/renderer/html" - "golang.org/x/net/html" ) -type PostMatter struct { - Date time.Time `toml:"date"` - Description string `toml:"description"` - Title string `toml:"title"` - Taxonomies struct { - Tags []string `toml:"tags"` - } `toml:"taxonomies"` -} - -type Post struct { - Input string - Output string - Basename string - URL string - Content string - PostMatter -} - -type Tags mapset.Set[string] - -func getPost(filename string) (*PostMatter, *[]byte, error) { - matter := PostMatter{} - content, err := os.Open(filename) - defer content.Close() - if err != nil { - return nil, nil, errors.WithMessagef(err, "could not open post %s", filename) - } - rest, err := frontmatter.MustParse(content, &matter) - if err != nil { - return nil, nil, errors.WithMessagef(err, "could not parse front matter of post %s", filename) - } - - return &matter, &rest, nil -} - -func readPosts(root string, inputDir string, outputDir string) ([]Post, Tags, error) { - tags := mapset.NewSet[string]() - posts := []Post{} - subdir := filepath.Join(root, inputDir) - files, err := os.ReadDir(subdir) - if err != nil { - return nil, nil, errors.WithMessagef(err, "could not read post directory %s", subdir) - } - outputReplacer := strings.NewReplacer(root, outputDir, ".md", "/index.html") - urlReplacer := strings.NewReplacer(root, "", ".md", "/") - markdown := goldmark.New( - goldmark.WithRendererOptions( - htmlrenderer.WithUnsafe(), - ), - goldmark.WithExtensions( - extension.GFM, - extension.Footnote, - extension.Typographer, - ), - ) - for _, f := range files { - pathFromRoot := filepath.Join(subdir, f.Name()) - if !f.IsDir() && path.Ext(pathFromRoot) == ".md" { - output := outputReplacer.Replace(pathFromRoot) - url := urlReplacer.Replace(pathFromRoot) - slog.Debug("reading post", "post", pathFromRoot) - matter, content, err := getPost(pathFromRoot) - if err != nil { - return nil, nil, err - } - - for _, tag := range matter.Taxonomies.Tags { - tags.Add(strings.ToLower(tag)) - } - - var buf bytes.Buffer - slog.Debug("rendering markdown in post", "post", pathFromRoot) - if err := markdown.Convert(*content, &buf); err != nil { - return nil, nil, errors.WithMessage(err, "could not convert markdown content") - } - post := Post{ - Input: pathFromRoot, - Output: output, - Basename: filepath.Base(url), - URL: url, - PostMatter: *matter, - Content: buf.String(), - } - - posts = append(posts, post) - } - } - slices.SortFunc(posts, func(a, b Post) int { - return b.Date.Compare(a.Date) - }) - return posts, tags, nil -} - -func layout(filename string, config config.Config, pageTitle string) (*goquery.Document, error) { - html, err := os.Open(filename) - if err != nil { - return nil, err - } - defer html.Close() - css, err := os.ReadFile("templates/style.css") - if err != nil { - return nil, err - } - doc, err := goquery.NewDocumentFromReader(html) - if err != nil { - return nil, err - } - doc.Find("html").SetAttr("lang", config.DefaultLanguage) - doc.Find("head > link[rel=alternate]").SetAttr("title", config.Title) - doc.Find(".title").SetText(config.Title) - doc.Find("title").Add(".p-name").SetText(pageTitle) - doc.Find("head > style").SetHtml("\n" + string(css)) - nav := doc.Find("nav") - navLink := doc.Find("nav a") - nav.Empty() - for _, link := range config.Menus["main"] { - nav.AppendSelection(navLink.Clone().SetAttr("href", link.URL).SetText(link.Name)) - } - return doc, nil -} - -func renderHTML(doc *goquery.Document) io.Reader { - r, w := io.Pipe() - - // TODO: return errors to main thread - go func() { - w.Write([]byte("<!doctype html>\n")) - err := htmlformat.Nodes(w, []*html.Node{doc.Children().Get(0)}) - if err != nil { - slog.Error("error rendering html", "error", err) - w.CloseWithError(err) - return - } - defer w.Close() - }() - return r -} - -func renderPost(post Post, config config.Config) (r io.Reader, err error) { - doc, err := layout("templates/post.html", config, post.PostMatter.Title) - if err != nil { - return nil, err - } - doc.Find(".title").AddClass("p-author h-card").SetAttr("rel", "author") - doc.Find(".h-entry .dt-published"). - SetAttr("datetime", post.PostMatter.Date.UTC().Format(time.RFC3339)). - SetText( - post.PostMatter.Date.Format("2006-01-02"), - ) - doc.Find(".h-entry .e-content").SetHtml(post.Content) - categories := doc.Find(".h-entry .p-categories") - tpl := categories.Find(".p-category").ParentsUntilSelection(categories) - tpl.Remove() - for _, tag := range post.Taxonomies.Tags { - cat := tpl.Clone() - cat.Find(".p-category").SetAttr("href", fmt.Sprintf("/tags/%s/", tag)).SetText("#" + tag) - categories.AppendSelection(cat) - } - - return renderHTML(doc), nil -} - -func renderTags(tags Tags, config config.Config) (io.Reader, error) { - doc, err := layout("templates/tags.html", config, config.Title) - if err != nil { - return nil, err - } - tagList := doc.Find(".tags") - tpl := doc.Find(".h-feed") - tpl.Remove() - for _, tag := range mapset.Sorted(tags) { - li := tpl.Clone() - li.Find("a").SetAttr("href", fmt.Sprintf("/tags/%s/", tag)).SetText("#" + tag) - tagList.AppendSelection(li) - } - return renderHTML(doc), nil -} - -func renderListPage(tag string, config config.Config, posts []Post) (io.Reader, error) { - var title string - if len(tag) > 0 { - title = tag - } else { - title = config.Title - } - doc, err := layout("templates/list.html", config, title) - if err != nil { - return nil, err - } - feed := doc.Find(".h-feed") - tpl := feed.Find(".h-entry") - tpl.Remove() - - doc.Find(".title").AddClass("p-author h-card").SetAttr("rel", "author") - if tag == "" { - doc.Find(".filter").Remove() - } else { - doc.Find(".filter").Find("h3").SetText("#" + tag) - } - - for _, post := range posts { - entry := tpl.Clone() - entry.Find(".p-name").SetText(post.Title).SetAttr("href", post.URL) - entry.Find(".dt-published"). - SetAttr("datetime", post.PostMatter.Date.UTC().Format(time.RFC3339)). - SetText(post.PostMatter.Date.Format("2006-01-02")) - feed.AppendSelection(entry) - } - - return renderHTML(doc), nil -} - -func renderHomepage(config config.Config, posts []Post) (io.Reader, error) { - _, index, err := getPost("content/_index.md") - if err != nil { - return nil, err - } - doc, err := layout("templates/homepage.html", config, config.Title) - if err != nil { - return nil, err - } - doc.Find("body").AddClass("h-card") - doc.Find(".title").AddClass("p-name u-url") - var buf bytes.Buffer - - md := goldmark.New(goldmark.WithRendererOptions(htmlrenderer.WithUnsafe())) - if err := md.Convert(*index, &buf); err != nil { - return nil, err - } - doc.Find("#content").SetHtml(buf.String()) - - feed := doc.Find(".h-feed") - tpl := feed.Find(".h-entry") - tpl.Remove() - - for _, post := range posts[0:3] { - entry := tpl.Clone() - entry.Find(".p-name").SetText(post.Title) - entry.Find(".u-url").SetAttr("href", post.URL) - entry. - Find(".dt-published"). - SetAttr("datetime", post.PostMatter.Date.UTC().Format(time.RFC3339)). - SetText(post.PostMatter.Date.Format("2006-01-02")) - - feed.AppendSelection(entry) - } - doc.Find(".u-email"). - SetAttr("href", fmt.Sprintf("mailto:%s", config.Email)). - SetText(config.Email) - - elsewhere := doc.Find(".elsewhere") - linkRelMe := elsewhere.Find(".u-url[rel=me]").ParentsUntil("ul") - linkRelMe.Remove() - - for _, link := range config.Menus["me"] { - el := linkRelMe.Clone() - el.Find("a").SetAttr("href", link.URL).SetText(link.Name) - elsewhere.AppendSelection(el) - } - - return renderHTML(doc), nil -} - -func render404(config config.Config) (io.Reader, error) { - doc, err := layout("templates/404.html", config, "404 Not Found") - if err != nil { - return nil, err - } - return renderHTML(doc), nil -} - -func renderFeed(title string, config config.Config, posts []Post, specific string) (io.Reader, error) { - reader, err := os.Open("templates/feed.xml") - if err != nil { - return nil, err - } - defer reader.Close() - doc, err := xmlquery.Parse(reader) - feed := doc.SelectElement("feed") - feed.SelectElement("title").FirstChild.Data = title - feed.SelectElement("link").SetAttr("href", config.BaseURL.String()) - feed.SelectElement("id").FirstChild.Data = atom.MakeTagURI(config, specific) - datetime, err := posts[0].Date.UTC().MarshalText() - feed.SelectElement("updated").FirstChild.Data = string(datetime) - tpl := feed.SelectElement("entry") - xmlquery.RemoveFromTree(tpl) - - for _, post := range posts { - fullURL, err := url.JoinPath(config.BaseURL.String(), post.URL) - if err != nil { - return nil, err - } - text, err := xml.MarshalIndent(&atom.FeedEntry{ - Title: post.Title, - Link: atom.MakeLink(fullURL), - Id: atom.MakeTagURI(config, post.Basename), - Updated: post.Date.UTC(), - Summary: post.Description, - Author: config.Title, - Content: atom.FeedContent{ - Content: post.Content, - Type: "html", - }, - }, " ", " ") - if err != nil { - return nil, err - } - entry, err := xmlquery.ParseWithOptions(strings.NewReader(string(text)), xmlquery.ParserOptions{ - Decoder: &xmlquery.DecoderOptions{ - Strict: false, - AutoClose: xml.HTMLAutoClose, - Entity: xml.HTMLEntity, - }, - }) - if err != nil { - return nil, err - } - xmlquery.AddChild(feed, entry.SelectElement("entry")) - } - - return strings.NewReader(doc.OutputXML(true)), nil -} - -func renderFeedStyles() (io.Reader, error) { - reader, err := os.Open("templates/feed-styles.xsl") - if err != nil { - return nil, err - } - defer reader.Close() - nsMap := map[string]string{ - "xsl": "http://www.w3.org/1999/XSL/Transform", - "atom": "http://www.w3.org/2005/Atom", - "xhtml": "http://www.w3.org/1999/xhtml", - } - doc, err := xmlquery.Parse(reader) - expr, err := xpath.CompileWithNS("//xhtml:style", nsMap) - if err != nil { - return nil, err - } - style := xmlquery.QuerySelector(doc, expr) - css, err := os.ReadFile("templates/style.css") - if err != nil { - return nil, err - } - xmlquery.AddChild(style, &xmlquery.Node{ - Type: xmlquery.TextNode, - Data: string(css), - }) - return strings.NewReader(doc.OutputXML(true)), nil -} - func mkdirp(dirs ...string) error { return os.MkdirAll(path.Join(dirs...), 0755) } @@ -539,28 +169,7 @@ type IOConfig struct { BaseURL config.URL } -func main() { - if os.Getenv("DEBUG") != "" { - slog.SetLogLoggerLevel(slog.LevelDebug) - } - slog.Debug("starting build process") - - ioConfig := IOConfig{} - if help, err := conf.Parse("", &ioConfig); err != nil { - if errors.Is(err, conf.ErrHelpWanted) { - fmt.Println(help) - os.Exit(1) - } - log.Panicf("parsing I/O configuration: %v", err) - } - - if ioConfig.Source != "." { - err := os.Chdir(ioConfig.Source) - if err != nil { - log.Panic("could not change to source directory") - } - } - +func buildSite(ioConfig IOConfig) error { config, err := config.GetConfig() if err != nil { log.Panic(errors.Errorf("could not get config: %v", err)) @@ -579,20 +188,9 @@ func main() { } if err := build(ioConfig.Destination, *config); err != nil { - switch cause := errors.Cause(err).(type) { - case *fs.PathError: - slog.Info("pathError") - slog.Error(fmt.Sprintf("%s", err)) - case toml.ParseError: - slog.Info("parseError") - slog.Error(fmt.Sprintf("%s", err)) - default: - slog.Info("other") - slog.Error(fmt.Sprintf("cause:%+v", errors.Cause(cause))) - slog.Error(fmt.Sprintf("%+v", cause)) - } - os.Exit(1) + return err } slog.Debug("done") + return nil } diff --git a/cmd/build/main.go b/cmd/build/main.go new file mode 100644 index 0000000..9b6a79b --- /dev/null +++ b/cmd/build/main.go @@ -0,0 +1,52 @@ +package main + +import ( + "fmt" + "io/fs" + "log" + "log/slog" + "os" + + "github.com/BurntSushi/toml" + "github.com/ardanlabs/conf/v3" + "github.com/pkg/errors" +) + +func main() { + if os.Getenv("DEBUG") != "" { + slog.SetLogLoggerLevel(slog.LevelDebug) + } + slog.Debug("starting build process") + + ioConfig := IOConfig{} + if help, err := conf.Parse("", &ioConfig); err != nil { + if errors.Is(err, conf.ErrHelpWanted) { + fmt.Println(help) + os.Exit(1) + } + log.Panicf("parsing I/O configuration: %v", err) + } + + if ioConfig.Source != "." { + err := os.Chdir(ioConfig.Source) + if err != nil { + log.Panic("could not change to source directory") + } + } + + if err := buildSite(ioConfig); err != nil { + switch cause := errors.Cause(err).(type) { + case *fs.PathError: + slog.Info("pathError") + slog.Error(fmt.Sprintf("%s", err)) + case toml.ParseError: + slog.Info("parseError") + slog.Error(fmt.Sprintf("%s", err)) + default: + slog.Info("other") + slog.Error(fmt.Sprintf("cause:%+v", errors.Cause(cause))) + slog.Error(fmt.Sprintf("%+v", cause)) + } + os.Exit(1) + } +} diff --git a/cmd/build/posts.go b/cmd/build/posts.go new file mode 100644 index 0000000..f03caf3 --- /dev/null +++ b/cmd/build/posts.go @@ -0,0 +1,121 @@ +package main + +import ( + "bytes" + "log/slog" + "os" + "path" + "path/filepath" + "slices" + "strings" + "time" + + "github.com/adrg/frontmatter" + mapset "github.com/deckarep/golang-set/v2" + "github.com/pkg/errors" + "github.com/yuin/goldmark" + "github.com/yuin/goldmark/extension" + htmlrenderer "github.com/yuin/goldmark/renderer/html" +) + +type PostMatter struct { + Date time.Time `toml:"date"` + Description string `toml:"description"` + Title string `toml:"title"` + Taxonomies struct { + Tags []string `toml:"tags"` + } `toml:"taxonomies"` +} + +type Post struct { + Input string + Output string + Basename string + URL string + Content string + PostMatter +} + +type Tags mapset.Set[string] + +var markdown = goldmark.New( + goldmark.WithRendererOptions( + htmlrenderer.WithUnsafe(), + ), + goldmark.WithExtensions( + extension.GFM, + extension.Footnote, + extension.Typographer, + ), +) + +func getPost(filename string) (*PostMatter, []byte, error) { + matter := PostMatter{} + content, err := os.Open(filename) + defer content.Close() + if err != nil { + return nil, nil, errors.WithMessagef(err, "could not open post %s", filename) + } + rest, err := frontmatter.MustParse(content, &matter) + if err != nil { + return nil, nil, errors.WithMessagef(err, "could not parse front matter of post %s", filename) + } + + return &matter, rest, nil +} + +func renderMarkdown(content []byte) (string, error) { + var buf bytes.Buffer + if err := markdown.Convert(content, &buf); err != nil { + return "", errors.WithMessage(err, "could not convert markdown content") + } + return buf.String(), nil +} + +func readPosts(root string, inputDir string, outputDir string) ([]Post, Tags, error) { + tags := mapset.NewSet[string]() + posts := []Post{} + subdir := filepath.Join(root, inputDir) + files, err := os.ReadDir(subdir) + if err != nil { + return nil, nil, errors.WithMessagef(err, "could not read post directory %s", subdir) + } + outputReplacer := strings.NewReplacer(root, outputDir, ".md", "/index.html") + urlReplacer := strings.NewReplacer(root, "", ".md", "/") + for _, f := range files { + pathFromRoot := filepath.Join(subdir, f.Name()) + if !f.IsDir() && path.Ext(pathFromRoot) == ".md" { + output := outputReplacer.Replace(pathFromRoot) + url := urlReplacer.Replace(pathFromRoot) + slog.Debug("reading post", "post", pathFromRoot) + matter, content, err := getPost(pathFromRoot) + if err != nil { + return nil, nil, err + } + + for _, tag := range matter.Taxonomies.Tags { + tags.Add(strings.ToLower(tag)) + } + + slog.Debug("rendering markdown in post", "post", pathFromRoot) + html, err := renderMarkdown(content) + if err != nil { + return nil, nil, err + } + post := Post{ + Input: pathFromRoot, + Output: output, + Basename: filepath.Base(url), + URL: url, + PostMatter: *matter, + Content: html, + } + + posts = append(posts, post) + } + } + slices.SortFunc(posts, func(a, b Post) int { + return b.Date.Compare(a.Date) + }) + return posts, tags, nil +} diff --git a/cmd/build/template.go b/cmd/build/template.go new file mode 100644 index 0000000..5ea1912 --- /dev/null +++ b/cmd/build/template.go @@ -0,0 +1,275 @@ +package main + +import ( + "encoding/xml" + "fmt" + "io" + "log/slog" + "net/url" + "os" + "strings" + "time" + "website/internal/atom" + "website/internal/config" + + "github.com/PuerkitoBio/goquery" + "github.com/a-h/htmlformat" + "github.com/antchfx/xmlquery" + "github.com/antchfx/xpath" + mapset "github.com/deckarep/golang-set/v2" + "golang.org/x/net/html" +) + +func layout(filename string, config config.Config, pageTitle string) (*goquery.Document, error) { + html, err := os.Open(filename) + if err != nil { + return nil, err + } + defer html.Close() + css, err := os.ReadFile("templates/style.css") + if err != nil { + return nil, err + } + doc, err := goquery.NewDocumentFromReader(html) + if err != nil { + return nil, err + } + doc.Find("html").SetAttr("lang", config.DefaultLanguage) + doc.Find("head > link[rel=alternate]").SetAttr("title", config.Title) + doc.Find(".title").SetText(config.Title) + doc.Find("title").Add(".p-name").SetText(pageTitle) + doc.Find("head > style").SetHtml("\n" + string(css)) + nav := doc.Find("nav") + navLink := doc.Find("nav a") + nav.Empty() + for _, link := range config.Menus["main"] { + nav.AppendSelection(navLink.Clone().SetAttr("href", link.URL).SetText(link.Name)) + } + return doc, nil +} + +func renderPost(post Post, config config.Config) (r io.Reader, err error) { + doc, err := layout("templates/post.html", config, post.PostMatter.Title) + if err != nil { + return nil, err + } + doc.Find(".title").AddClass("p-author h-card").SetAttr("rel", "author") + doc.Find(".h-entry .dt-published"). + SetAttr("datetime", post.PostMatter.Date.UTC().Format(time.RFC3339)). + SetText( + post.PostMatter.Date.Format("2006-01-02"), + ) + doc.Find(".h-entry .e-content").SetHtml(post.Content) + categories := doc.Find(".h-entry .p-categories") + tpl := categories.Find(".p-category").ParentsUntilSelection(categories) + tpl.Remove() + for _, tag := range post.Taxonomies.Tags { + cat := tpl.Clone() + cat.Find(".p-category").SetAttr("href", fmt.Sprintf("/tags/%s/", tag)).SetText("#" + tag) + categories.AppendSelection(cat) + } + + return renderHTML(doc), nil +} + +func renderTags(tags Tags, config config.Config) (io.Reader, error) { + doc, err := layout("templates/tags.html", config, config.Title) + if err != nil { + return nil, err + } + tagList := doc.Find(".tags") + tpl := doc.Find(".h-feed") + tpl.Remove() + for _, tag := range mapset.Sorted(tags) { + li := tpl.Clone() + li.Find("a").SetAttr("href", fmt.Sprintf("/tags/%s/", tag)).SetText("#" + tag) + tagList.AppendSelection(li) + } + return renderHTML(doc), nil +} + +func renderListPage(tag string, config config.Config, posts []Post) (io.Reader, error) { + var title string + if len(tag) > 0 { + title = tag + } else { + title = config.Title + } + doc, err := layout("templates/list.html", config, title) + if err != nil { + return nil, err + } + feed := doc.Find(".h-feed") + tpl := feed.Find(".h-entry") + tpl.Remove() + + doc.Find(".title").AddClass("p-author h-card").SetAttr("rel", "author") + if tag == "" { + doc.Find(".filter").Remove() + } else { + doc.Find(".filter").Find("h3").SetText("#" + tag) + } + + for _, post := range posts { + entry := tpl.Clone() + entry.Find(".p-name").SetText(post.Title).SetAttr("href", post.URL) + entry.Find(".dt-published"). + SetAttr("datetime", post.PostMatter.Date.UTC().Format(time.RFC3339)). + SetText(post.PostMatter.Date.Format("2006-01-02")) + feed.AppendSelection(entry) + } + + return renderHTML(doc), nil +} + +func renderHomepage(config config.Config, posts []Post) (io.Reader, error) { + _, index, err := getPost("content/_index.md") + if err != nil { + return nil, err + } + doc, err := layout("templates/homepage.html", config, config.Title) + if err != nil { + return nil, err + } + doc.Find("body").AddClass("h-card") + doc.Find(".title").AddClass("p-name u-url") + + html, err := renderMarkdown(index) + doc.Find("#content").SetHtml(html) + + feed := doc.Find(".h-feed") + tpl := feed.Find(".h-entry") + tpl.Remove() + + for _, post := range posts[0:3] { + entry := tpl.Clone() + entry.Find(".p-name").SetText(post.Title) + entry.Find(".u-url").SetAttr("href", post.URL) + entry. + Find(".dt-published"). + SetAttr("datetime", post.PostMatter.Date.UTC().Format(time.RFC3339)). + SetText(post.PostMatter.Date.Format("2006-01-02")) + + feed.AppendSelection(entry) + } + doc.Find(".u-email"). + SetAttr("href", fmt.Sprintf("mailto:%s", config.Email)). + SetText(config.Email) + + elsewhere := doc.Find(".elsewhere") + linkRelMe := elsewhere.Find(".u-url[rel=me]").ParentsUntil("ul") + linkRelMe.Remove() + + for _, link := range config.Menus["me"] { + el := linkRelMe.Clone() + el.Find("a").SetAttr("href", link.URL).SetText(link.Name) + elsewhere.AppendSelection(el) + } + + return renderHTML(doc), nil +} + +func render404(config config.Config) (io.Reader, error) { + doc, err := layout("templates/404.html", config, "404 Not Found") + if err != nil { + return nil, err + } + return renderHTML(doc), nil +} + +func renderFeed(title string, config config.Config, posts []Post, specific string) (io.Reader, error) { + reader, err := os.Open("templates/feed.xml") + if err != nil { + return nil, err + } + defer reader.Close() + doc, err := xmlquery.Parse(reader) + feed := doc.SelectElement("feed") + feed.SelectElement("title").FirstChild.Data = title + feed.SelectElement("link").SetAttr("href", config.BaseURL.String()) + feed.SelectElement("id").FirstChild.Data = atom.MakeTagURI(config, specific) + datetime, err := posts[0].Date.UTC().MarshalText() + feed.SelectElement("updated").FirstChild.Data = string(datetime) + tpl := feed.SelectElement("entry") + xmlquery.RemoveFromTree(tpl) + + for _, post := range posts { + fullURL, err := url.JoinPath(config.BaseURL.String(), post.URL) + if err != nil { + return nil, err + } + text, err := xml.MarshalIndent(&atom.FeedEntry{ + Title: post.Title, + Link: atom.MakeLink(fullURL), + Id: atom.MakeTagURI(config, post.Basename), + Updated: post.Date.UTC(), + Summary: post.Description, + Author: config.Title, + Content: atom.FeedContent{ + Content: post.Content, + Type: "html", + }, + }, " ", " ") + if err != nil { + return nil, err + } + entry, err := xmlquery.ParseWithOptions(strings.NewReader(string(text)), xmlquery.ParserOptions{ + Decoder: &xmlquery.DecoderOptions{ + Strict: false, + AutoClose: xml.HTMLAutoClose, + Entity: xml.HTMLEntity, + }, + }) + if err != nil { + return nil, err + } + xmlquery.AddChild(feed, entry.SelectElement("entry")) + } + + return strings.NewReader(doc.OutputXML(true)), nil +} + +func renderFeedStyles() (io.Reader, error) { + reader, err := os.Open("templates/feed-styles.xsl") + if err != nil { + return nil, err + } + defer reader.Close() + nsMap := map[string]string{ + "xsl": "http://www.w3.org/1999/XSL/Transform", + "atom": "http://www.w3.org/2005/Atom", + "xhtml": "http://www.w3.org/1999/xhtml", + } + doc, err := xmlquery.Parse(reader) + expr, err := xpath.CompileWithNS("//xhtml:style", nsMap) + if err != nil { + return nil, err + } + style := xmlquery.QuerySelector(doc, expr) + css, err := os.ReadFile("templates/style.css") + if err != nil { + return nil, err + } + xmlquery.AddChild(style, &xmlquery.Node{ + Type: xmlquery.TextNode, + Data: string(css), + }) + return strings.NewReader(doc.OutputXML(true)), nil +} + +func renderHTML(doc *goquery.Document) io.Reader { + r, w := io.Pipe() + + // TODO: return errors to main thread + go func() { + w.Write([]byte("<!doctype html>\n")) + err := htmlformat.Nodes(w, []*html.Node{doc.Children().Get(0)}) + if err != nil { + slog.Error("error rendering html", "error", err) + w.CloseWithError(err) + return + } + defer w.Close() + }() + return r +} |