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// Copyright 2017 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package markup
import (
"path/filepath"
"strings"
)
// Parser defines an interface for parsering markup file to HTML
type Parser interface {
Name() string // markup format name
Extensions() []string
Render(rawBytes []byte, urlPrefix string, metas map[string]string, isWiki bool) []byte
}
var (
parsers = make(map[string]Parser)
)
// RegisterParser registers a new markup file parser
func RegisterParser(parser Parser) {
for _, ext := range parser.Extensions() {
parsers[strings.ToLower(ext)] = parser
}
}
// Render renders markup file to HTML with all specific handling stuff.
func Render(filename string, rawBytes []byte, urlPrefix string, metas map[string]string) []byte {
return render(filename, rawBytes, urlPrefix, metas, false)
}
func render(filename string, rawBytes []byte, urlPrefix string, metas map[string]string, isWiki bool) []byte {
extension := strings.ToLower(filepath.Ext(filename))
if parser, ok := parsers[extension]; ok {
return parser.Render(rawBytes, urlPrefix, metas, isWiki)
}
return nil
}
// RenderString renders Markdown to HTML with special links and returns string type.
func RenderString(filename string, raw, urlPrefix string, metas map[string]string) string {
return string(render(filename, []byte(raw), urlPrefix, metas, false))
}
// RenderWiki renders markdown wiki page to HTML and return HTML string
func RenderWiki(filename string, rawBytes []byte, urlPrefix string, metas map[string]string) string {
return string(render(filename, rawBytes, urlPrefix, metas, true))
}
// Type returns if markup format via the filename
func Type(filename string) string {
extension := strings.ToLower(filepath.Ext(filename))
if parser, ok := parsers[extension]; ok {
return parser.Name()
}
return ""
}
// IsReadmeFile reports whether name looks like a README file
// based on its name.
func IsReadmeFile(name string) bool {
name = strings.ToLower(name)
if len(name) < 6 {
return false
} else if len(name) == 6 {
return name == "readme"
}
return name[:7] == "readme."
}
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