diff options
| -rw-r--r-- | README.adoc | 9 | ||||
| -rw-r--r-- | hasp/main.go | 91 | ||||
| -rw-r--r-- | hswg/main.go | 75 |
3 files changed, 61 insertions, 114 deletions
diff --git a/README.adoc b/README.adoc index 62a7aac..0c0fa23 100644 --- a/README.adoc +++ b/README.adoc @@ -189,10 +189,11 @@ An improved replacement for autocutsel in selection synchronization "mode": Only UTF8_STRING-convertible selections are synchronized. -hasp -- (lib)asciidoc syntax preprocessor -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ -Provisional tool to make libasciidoc understand more syntax, namely -two-line/underlined titles for my Gitea projects. +hswg -- static website generator +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +Wraps libasciidoc to make it understand more syntax, namely two-line/underlined +titles, and can be run either as an AsciiDoc processor for my Gitea, or as +a trivial wiki-like site generator. ht -- terminal emulator ~~~~~~~~~~~~~~~~~~~~~~~ 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>") - } -} diff --git a/hswg/main.go b/hswg/main.go index 595bb4a..2a46c6e 100644 --- a/hswg/main.go +++ b/hswg/main.go @@ -4,6 +4,7 @@ package main import ( "bytes" + "encoding/xml" "fmt" "io" "io/ioutil" @@ -67,6 +68,41 @@ func ConvertTitles(w *io.PipeWriter, input []byte) { writeLine(w, last, nil) } +// Render converts an io.Reader with an AsciiDoc document to HTML. So long as +// the file could be read at all, it will always return a non-empty document. +func Render(doc io.Reader, config configuration.Configuration) ( + html *bytes.Buffer, meta types.Metadata, err error) { + html = bytes.NewBuffer(nil) + + var input []byte + if input, err = ioutil.ReadAll(doc); err != nil { + return + } + + pr, pw := io.Pipe() + go func() { + defer pw.Close() + ConvertTitles(pw, input) + }() + + // io.Copy(os.Stdout, pr) + // return + + meta, err = libasciidoc.ConvertToHTML(pr, html, config) + if err != nil { + // Fallback: output all the text sanitized for direct inclusion. + html.Reset() + + _, _ = html.WriteString("<pre>") + for _, line := range bytes.Split(input, []byte{'\n'}) { + _ = xml.EscapeText(html, line) + _, _ = html.WriteString("\n") + } + _, _ = html.WriteString("</pre>") + } + return +} + // entry contains all context information about a single page. type entry struct { path string // path @@ -106,7 +142,23 @@ func expand(m *map[string]*entry, name string, chunk []byte) []byte { }) } +func singleFile() { + html, meta, err := Render(os.Stdin, configuration.NewConfiguration()) + if err != nil { + log.Println(err) + } else if meta.Title != "" { + _, _ = os.Stdout.WriteString("<h1>") + _ = xml.EscapeText(os.Stdout, []byte(meta.Title)) + _, _ = os.Stdout.WriteString("</h1>\n") + } + _, _ = io.Copy(os.Stdout, html) +} + func main() { + if len(os.Args) < 2 { + singleFile() + return + } if len(os.Args) < 3 { log.Fatalf("usage: %s TEMPLATE GLOB...\n", os.Args[0]) } @@ -146,32 +198,17 @@ func main() { e.mtime = i.ModTime() } - input, err := ioutil.ReadAll(f) - if err != nil { - log.Fatalln(err) - } - - pr, pw := io.Pipe() - go func() { - defer pw.Close() - ConvertTitles(pw, input) - }() - - config := configuration.NewConfiguration( - configuration.WithHeaderFooter(false), + var html *bytes.Buffer + if html, e.metadata, err = Render(f, configuration.NewConfiguration( configuration.WithFilename(e.path), configuration.WithLastUpdated(e.mtime), - ) - - buf := bytes.NewBuffer(nil) - e.metadata, err = libasciidoc.ConvertToHTML(pr, buf, config) - if err != nil { + )); err != nil { log.Fatalln(err) } // Expand LinkWords anywhere between <tags>. // We want something like the inverse of Regexp.ReplaceAllStringFunc. - raw, last, expanded := buf.Bytes(), 0, bytes.NewBuffer(nil) + raw, last, expanded := html.Bytes(), 0, bytes.NewBuffer(nil) for _, where := range tagRE.FindAllIndex(raw, -1) { _, _ = expanded.Write(expand(&entries, name, raw[last:where[0]])) _, _ = expanded.Write(raw[where[0]:where[1]]) |