hswg: merge in hasp as a mode
No need to have the two-line header processor in two places.
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@ -189,10 +189,11 @@ An improved replacement for autocutsel in selection synchronization "mode":
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Only UTF8_STRING-convertible selections are synchronized.
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hasp -- (lib)asciidoc syntax preprocessor
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Provisional tool to make libasciidoc understand more syntax, namely
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two-line/underlined titles for my Gitea projects.
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hswg -- static website generator
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~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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Wraps libasciidoc to make it understand more syntax, namely two-line/underlined
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titles, and can be run either as an AsciiDoc processor for my Gitea, or as
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a trivial wiki-like site generator.
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ht -- terminal emulator
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~~~~~~~~~~~~~~~~~~~~~~~
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91
hasp/main.go
91
hasp/main.go
@ -1,91 +0,0 @@
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// Program hasp is a preprocessor for libasciidoc to make it understand
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// two-line/underlined titles, intended to be used in Gitea.
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package main
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import (
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"bytes"
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"encoding/xml"
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"io"
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"io/ioutil"
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"os"
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"strings"
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"unicode"
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"unicode/utf8"
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"github.com/bytesparadise/libasciidoc"
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"github.com/bytesparadise/libasciidoc/pkg/configuration"
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)
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// isTitle returns the title level if the lines seem to form a title,
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// zero otherwise. Input lines may inclide trailing newlines.
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func isTitle(line1, line2 []byte) int {
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// This is a very naïve method, we should target graphemes (thus at least
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// NFC normalize the lines first) and account for wide characters.
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diff := utf8.RuneCount(line1) - utf8.RuneCount(line2)
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if len(line2) < 2 || diff < -1 || diff > 1 {
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return 0
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}
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// "Don't be fooled by back-to-back delimited blocks."
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// Still gets fooled by other things, though.
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if bytes.IndexFunc(line1, func(r rune) bool {
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return unicode.IsLetter(r) || unicode.IsNumber(r)
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}) < 0 {
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return 0
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}
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// The underline must be homogenous.
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for _, r := range bytes.TrimRight(line2, "\r\n") {
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if r != line2[0] {
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return 0
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}
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}
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return 1 + strings.IndexByte("=-~^+", line2[0])
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}
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func writeLine(w *io.PipeWriter, cur, next []byte) []byte {
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if level := isTitle(cur, next); level > 0 {
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w.Write(append(bytes.Repeat([]byte{'='}, level), ' '))
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next = nil
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}
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w.Write(cur)
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return next
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}
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// ConvertTitles converts AsciiDoc two-line (underlined) titles to single-line.
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func ConvertTitles(w *io.PipeWriter, input []byte) {
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var last []byte
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for _, cur := range bytes.SplitAfter(input, []byte{'\n'}) {
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last = writeLine(w, last, cur)
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}
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writeLine(w, last, nil)
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}
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func main() {
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input, err := ioutil.ReadAll(os.Stdin)
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if err != nil {
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panic(err)
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}
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pr, pw := io.Pipe()
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go func() {
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defer pw.Close()
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ConvertTitles(pw, input)
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}()
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// io.Copy(os.Stdout, pr)
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// return
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config := configuration.NewConfiguration(
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configuration.WithHeaderFooter(true))
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_, err = libasciidoc.ConvertToHTML(pr, os.Stdout, config)
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if err != nil {
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// Fallback: output all the text sanitized for direct inclusion.
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os.Stdout.WriteString("<pre>")
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for _, line := range bytes.Split(input, []byte{'\n'}) {
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xml.EscapeText(os.Stdout, line)
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os.Stdout.WriteString("\n")
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}
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os.Stdout.WriteString("</pre>")
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}
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}
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75
hswg/main.go
75
hswg/main.go
@ -4,6 +4,7 @@ package main
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import (
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"bytes"
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"encoding/xml"
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"fmt"
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"io"
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"io/ioutil"
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@ -67,6 +68,41 @@ func ConvertTitles(w *io.PipeWriter, input []byte) {
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writeLine(w, last, nil)
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}
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// Render converts an io.Reader with an AsciiDoc document to HTML. So long as
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// the file could be read at all, it will always return a non-empty document.
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func Render(doc io.Reader, config configuration.Configuration) (
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html *bytes.Buffer, meta types.Metadata, err error) {
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html = bytes.NewBuffer(nil)
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var input []byte
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if input, err = ioutil.ReadAll(doc); err != nil {
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return
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}
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pr, pw := io.Pipe()
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go func() {
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defer pw.Close()
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ConvertTitles(pw, input)
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}()
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// io.Copy(os.Stdout, pr)
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// return
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meta, err = libasciidoc.ConvertToHTML(pr, html, config)
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if err != nil {
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// Fallback: output all the text sanitized for direct inclusion.
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html.Reset()
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_, _ = html.WriteString("<pre>")
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for _, line := range bytes.Split(input, []byte{'\n'}) {
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_ = xml.EscapeText(html, line)
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_, _ = html.WriteString("\n")
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}
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_, _ = html.WriteString("</pre>")
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}
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return
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}
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// entry contains all context information about a single page.
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type entry struct {
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path string // path
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@ -106,7 +142,23 @@ func expand(m *map[string]*entry, name string, chunk []byte) []byte {
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})
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}
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func singleFile() {
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html, meta, err := Render(os.Stdin, configuration.NewConfiguration())
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if err != nil {
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log.Println(err)
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} else if meta.Title != "" {
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_, _ = os.Stdout.WriteString("<h1>")
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_ = xml.EscapeText(os.Stdout, []byte(meta.Title))
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_, _ = os.Stdout.WriteString("</h1>\n")
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}
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_, _ = io.Copy(os.Stdout, html)
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}
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func main() {
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if len(os.Args) < 2 {
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singleFile()
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return
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}
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if len(os.Args) < 3 {
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log.Fatalf("usage: %s TEMPLATE GLOB...\n", os.Args[0])
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}
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@ -146,32 +198,17 @@ func main() {
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e.mtime = i.ModTime()
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}
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input, err := ioutil.ReadAll(f)
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if err != nil {
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log.Fatalln(err)
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}
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pr, pw := io.Pipe()
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go func() {
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defer pw.Close()
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ConvertTitles(pw, input)
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}()
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config := configuration.NewConfiguration(
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configuration.WithHeaderFooter(false),
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var html *bytes.Buffer
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if html, e.metadata, err = Render(f, configuration.NewConfiguration(
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configuration.WithFilename(e.path),
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configuration.WithLastUpdated(e.mtime),
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)
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buf := bytes.NewBuffer(nil)
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e.metadata, err = libasciidoc.ConvertToHTML(pr, buf, config)
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if err != nil {
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)); err != nil {
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log.Fatalln(err)
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}
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// Expand LinkWords anywhere between <tags>.
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// We want something like the inverse of Regexp.ReplaceAllStringFunc.
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raw, last, expanded := buf.Bytes(), 0, bytes.NewBuffer(nil)
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raw, last, expanded := html.Bytes(), 0, bytes.NewBuffer(nil)
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for _, where := range tagRE.FindAllIndex(raw, -1) {
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_, _ = expanded.Write(expand(&entries, name, raw[last:where[0]]))
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_, _ = expanded.Write(raw[where[0]:where[1]])
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