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package main
import (
"flag"
"fmt"
"io/ioutil"
"os"
"github.com/gomarkdown/markdown"
"github.com/gomarkdown/markdown/ast"
mdhtml "github.com/gomarkdown/markdown/html"
"github.com/gomarkdown/markdown/parser"
)
// This prints AST of parsed markdown document.
// Usage: printast <markdown-file>
func usageAndExit() {
fmt.Printf("Usage: printast [-to-html] <markdown-file>\n")
os.Exit(1)
}
func main() {
var (
flgToHTML bool
)
{
flag.BoolVar(&flgToHTML, "to-html", false, "convert to HTML")
flag.Parse()
}
files := flag.Args()
if len(files) < 1 {
usageAndExit()
}
for _, fileName := range files {
d, err := ioutil.ReadFile(fileName)
if err != nil {
fmt.Fprintf(os.Stderr, "Couldn't open '%s', error: '%s'\n", fileName, err)
continue
}
d = markdown.NormalizeNewlines(d)
exts := parser.CommonExtensions // parser.OrderedListStart | parser.NoEmptyLineBeforeBlock
p := parser.NewWithExtensions(exts)
doc := markdown.Parse(d, p)
if flgToHTML {
htmlFlags := mdhtml.Smartypants |
mdhtml.SmartypantsFractions |
mdhtml.SmartypantsDashes |
mdhtml.SmartypantsLatexDashes
htmlOpts := mdhtml.RendererOptions{
Flags: htmlFlags,
}
renderer := mdhtml.NewRenderer(htmlOpts)
html := markdown.Render(doc, renderer)
fmt.Printf("HTML of file '%s':\n%s\n", fileName, string(html))
} else {
fmt.Printf("Ast of file '%s':\n", fileName)
ast.PrintWithPrefix(os.Stdout, doc, " ")
fmt.Print("\n")
}
}
}
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