all: revert support for markdown

This program only support asciidoctor markup only.

5 files changed, 6 insertions, 76 deletions

diff --git a/_example/index.adoc b/_example/index.adoc
index 81c3c9c..930d017 100644
--- a/_example/index.adoc
+++ b/_example/index.adoc
@@ -8,13 +8,9 @@ image:https://img.shields.io/badge/go.dev-reference-007d9c?logo=go&logoColor=whi
 image:https://goreportcard.com/badge/github.com/shuLhan/ciigo[Go Report Card, link={url-gocard}]
 
 `ciigo` is a library and a program to write static web server with embedded
-files using generated markup format.
-
-Currently, ciigo support
+files using
 https://asciidoctor.org/docs/what-is-asciidoc/[asciidoc]
-and
-https://commonmark.org/[markdown]
-as markup format.
+markup format.
 
 
 ==  ciigo as library
@@ -34,8 +30,8 @@ markup files, as HTML files.
 $ ciigo [-template <file>] convert <dir>
 ----
 
-Scan the "dir" recursively to find markup files (.adoc or .md) and
-convert them into HTML files.
+Scan the "dir" recursively to find markup files (.adoc) and convert them into
+HTML files.
 The template "file" is optional, default to embedded HTML template.
 
 ----
@@ -138,7 +134,7 @@ accessed by browser,
 Hello, world!
 ----
 
-Run `go generate` to convert all files with extension `.adoc` (or `.md`)
+Run `go generate` to convert all files with extension `.adoc`
 into HTML and embed it into `./cmd/mysite/static.go`
 
 ----
@@ -207,15 +203,3 @@ Using symlink on ".adoc" file inside `content` directory is not supported yet.
 The source code for this software can be viewed at
 https://github.com/shuLhan/ciigo
 under custom link:/LICENSE[BSD license].
-
-
-==  Credits
-
-This software is developed with helps from the following third party
-libraries,
-
-*  https://github.com/bytesparadise/libasciidoc[libasciidoc].
-   https://raw.githubusercontent.com/bytesparadise/libasciidoc/master/LICENSE[License].
-
-*  https://github.com/yuin/goldmark[goldmark].
-   https://raw.githubusercontent.com/yuin/goldmark/master/LICENSE[License].
diff --git a/ciigo.go b/ciigo.go
index c1d3a97..54d0736 100644
--- a/ciigo.go
+++ b/ciigo.go
@@ -26,7 +26,6 @@ const (
 	defDir      = "."
 	dirAssets   = "assets"
 	extAsciidoc = ".adoc"
-	extMarkdown = ".md"
 )
 
 const (
@@ -39,14 +38,12 @@ const (
 const (
 	markupKindUnknown byte = iota
 	markupKindAsciidoc
-	markupKindMarkdown
 )
 
 //nolint: gochecknoglobals
 var (
 	defExcludes = []string{
 		`.*\.adoc$`,
-		`.*\.md$`,
 		`^\..*`,
 	}
 )
@@ -139,7 +136,7 @@ func Serve(dir, address, htmlTemplate string) {
 }
 
 func isExtensionMarkup(ext string) bool {
-	return ext == extAsciidoc || ext == extMarkdown
+	return ext == extAsciidoc
 }
 
 //
@@ -193,8 +190,6 @@ func markupKind(ext string) byte {
 	switch ext {
 	case extAsciidoc:
 		return markupKindAsciidoc
-	case extMarkdown:
-		return markupKindMarkdown
 	}
 	return markupKindUnknown
 }
diff --git a/go.mod b/go.mod
index 75dd34a..770bbab 100644
--- a/go.mod
+++ b/go.mod
@@ -3,15 +3,9 @@ module github.com/shuLhan/ciigo
 go 1.13
 
 require (
-	github.com/kr/text v0.2.0 // indirect
-	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
 	github.com/shuLhan/asciidoctor-go v0.0.0-20201103171217-ebec994cda94
 	github.com/shuLhan/share v0.20.0
-	github.com/yuin/goldmark v1.2.1
-	github.com/yuin/goldmark-meta v0.0.0-20191126180153-f0638e958b60
 	golang.org/x/net v0.0.0-20201006153459-a7d1128ccaa0 // indirect
-	gopkg.in/check.v1 v1.0.0-20200902074654-038fdea0a05b // indirect
-	gopkg.in/yaml.v2 v2.3.0 // indirect
 )
 
 //replace github.com/shuLhan/asciidoctor-go => ../asciidoctor-go
diff --git a/go.sum b/go.sum
index 0163642..3d0f489 100644
--- a/go.sum
+++ b/go.sum
@@ -1,19 +1,7 @@
-github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
-github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
-github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
-github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
-github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
-github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e h1:fD57ERR4JtEqsWbfPhv4DMiApHyliiK5xCTNVSPiaAs=
-github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e/go.mod h1:zD1mROLANZcx1PVRCS0qkT7pwLkGfwJo4zjcN/Tysno=
 github.com/shuLhan/asciidoctor-go v0.0.0-20201103171217-ebec994cda94 h1:98N50waTQdHM0dz6/pfSJdvwOEao9tDwKubWTjYcft4=
 github.com/shuLhan/asciidoctor-go v0.0.0-20201103171217-ebec994cda94/go.mod h1:VhBdT7ve5XYza9pVB/xwwcJAtDYJwlrzq2mYEhMHjCw=
 github.com/shuLhan/share v0.20.0 h1:CNeT7Ky3kR4dAbxIOuuWmqaoGjBd2TlyY+qiPjSgLn0=
 github.com/shuLhan/share v0.20.0/go.mod h1:FqPloTQlDTAmMXxaWft/V5tPmxEHBJeyJMAzVm4/1og=
-github.com/yuin/goldmark v1.1.7/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
-github.com/yuin/goldmark v1.2.1 h1:ruQGxdhGHe7FWOJPT0mKs5+pD2Xs1Bm/kdGlHO04FmM=
-github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
-github.com/yuin/goldmark-meta v0.0.0-20191126180153-f0638e958b60 h1:gZucqLjL1eDzVWrXj4uiWeMbAopJlBR2mKQAsTGdPwo=
-github.com/yuin/goldmark-meta v0.0.0-20191126180153-f0638e958b60/go.mod h1:i9VhcIHN2PxXMbQrKqXNueok6QNONoPjNMoj9MygVL0=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20200602180216-279210d13fed/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
@@ -29,9 +17,3 @@ golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7w
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20200902074654-038fdea0a05b h1:QRR6H1YWRnHb4Y/HeNFCTJLFVxaq6wH4YuVdsUOr75U=
-gopkg.in/check.v1 v1.0.0-20200902074654-038fdea0a05b/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.3.0 h1:clyUAQHOM3G0M3f5vQj7LuJrETvjVot3Z5el9nffUtU=
-gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
diff --git a/htmlgenerator.go b/htmlgenerator.go
index f55645f..73fd938 100644
--- a/htmlgenerator.go
+++ b/htmlgenerator.go
@@ -7,14 +7,9 @@ package ciigo
 import (
 	"fmt"
 	"html/template"
-	"io/ioutil"
 	"log"
 	"os"
 
-	"github.com/yuin/goldmark"
-	meta "github.com/yuin/goldmark-meta"
-	mdparser "github.com/yuin/goldmark/parser"
-
 	"github.com/shuLhan/asciidoctor-go"
 )
 
@@ -23,7 +18,6 @@ import (
 //
 type htmlGenerator struct {
 	path       string
-	mdg        goldmark.Markdown
 	tmpl       *template.Template
 	tmplSearch *template.Template
 }
@@ -33,11 +27,6 @@ func newHTMLGenerator(file, content string) (htmlg *htmlGenerator) {
 
 	htmlg = &htmlGenerator{
 		path: file,
-		mdg: goldmark.New(
-			goldmark.WithExtensions(
-				meta.Meta,
-			),
-		),
 	}
 
 	htmlg.tmpl = template.New("")
@@ -95,20 +84,6 @@ func (htmlg *htmlGenerator) convert(fmarkup *fileMarkup, fhtml *fileHTML, force
 		}
 
 		fhtml.unpackAdocMetadata(doc)
-
-	case markupKindMarkdown:
-		in, err := ioutil.ReadFile(fmarkup.path)
-		if err != nil {
-			log.Fatal("htmlGenerator.convert: " + err.Error())
-		}
-
-		ctx := mdparser.NewContext()
-		err = htmlg.mdg.Convert(in, &fhtml.rawBody, mdparser.WithContext(ctx))
-		if err != nil {
-			log.Fatal(err)
-		}
-
-		fmarkup.metadata = meta.Get(ctx)
 	}
 	if fhtml.rawBody.Len() == 0 {
 		fmt.Println("skip")