From 3a5cc216bb6d497b28103d19b8471b5a89498cf9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?P=C5=99emysl=20Eric=20Janouch?= <p@janouch.name>
Date: Sat, 15 Aug 2020 04:21:56 +0200
Subject: hswg: merge in hasp as a mode

No need to have the two-line header processor in two places.
---
 hasp/main.go | 91 ------------------------------------------------------------
 1 file changed, 91 deletions(-)
 delete mode 100644 hasp/main.go

(limited to 'hasp')

diff --git a/hasp/main.go b/hasp/main.go
deleted file mode 100644
index dd2ba7a..0000000
--- a/hasp/main.go
+++ /dev/null
@@ -1,91 +0,0 @@
-// Program hasp is a preprocessor for libasciidoc to make it understand
-// two-line/underlined titles, intended to be used in Gitea.
-package main
-
-import (
-	"bytes"
-	"encoding/xml"
-	"io"
-	"io/ioutil"
-	"os"
-	"strings"
-	"unicode"
-	"unicode/utf8"
-
-	"github.com/bytesparadise/libasciidoc"
-	"github.com/bytesparadise/libasciidoc/pkg/configuration"
-)
-
-// isTitle returns the title level if the lines seem to form a title,
-// zero otherwise. Input lines may inclide trailing newlines.
-func isTitle(line1, line2 []byte) int {
-	// This is a very naïve method, we should target graphemes (thus at least
-	// NFC normalize the lines first) and account for wide characters.
-	diff := utf8.RuneCount(line1) - utf8.RuneCount(line2)
-	if len(line2) < 2 || diff < -1 || diff > 1 {
-		return 0
-	}
-
-	// "Don't be fooled by back-to-back delimited blocks."
-	// Still gets fooled by other things, though.
-	if bytes.IndexFunc(line1, func(r rune) bool {
-		return unicode.IsLetter(r) || unicode.IsNumber(r)
-	}) < 0 {
-		return 0
-	}
-
-	// The underline must be homogenous.
-	for _, r := range bytes.TrimRight(line2, "\r\n") {
-		if r != line2[0] {
-			return 0
-		}
-	}
-	return 1 + strings.IndexByte("=-~^+", line2[0])
-}
-
-func writeLine(w *io.PipeWriter, cur, next []byte) []byte {
-	if level := isTitle(cur, next); level > 0 {
-		w.Write(append(bytes.Repeat([]byte{'='}, level), ' '))
-		next = nil
-	}
-	w.Write(cur)
-	return next
-}
-
-// ConvertTitles converts AsciiDoc two-line (underlined) titles to single-line.
-func ConvertTitles(w *io.PipeWriter, input []byte) {
-	var last []byte
-	for _, cur := range bytes.SplitAfter(input, []byte{'\n'}) {
-		last = writeLine(w, last, cur)
-	}
-	writeLine(w, last, nil)
-}
-
-func main() {
-	input, err := ioutil.ReadAll(os.Stdin)
-	if err != nil {
-		panic(err)
-	}
-
-	pr, pw := io.Pipe()
-	go func() {
-		defer pw.Close()
-		ConvertTitles(pw, input)
-	}()
-
-	// io.Copy(os.Stdout, pr)
-	// return
-
-	config := configuration.NewConfiguration(
-		configuration.WithHeaderFooter(true))
-	_, err = libasciidoc.ConvertToHTML(pr, os.Stdout, config)
-	if err != nil {
-		// Fallback: output all the text sanitized for direct inclusion.
-		os.Stdout.WriteString("<pre>")
-		for _, line := range bytes.Split(input, []byte{'\n'}) {
-			xml.EscapeText(os.Stdout, line)
-			os.Stdout.WriteString("\n")
-		}
-		os.Stdout.WriteString("</pre>")
-	}
-}
-- 
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