cmd/ciigo: a CLI to convert, generate, and serve markup files

Here are the usage of CLI,

	ciigo [-template <file>] convert <dir>

Scan the "dir" recursively to find markup files (.adoc or .md) and
convert them into HTML files.
The template "file" is optional, default to "templates/html.tmpl" in
the current directory.

	ciigo [-template <file>] [-out <file>] generate <dir>

Convert all markup files inside directory "dir" recursively and then
embed them into ".go" source file.
The output file is optional, default to "ciigo_static.go" in current
directory.

	ciigo [-template <file>] [-address <ip:port>] serve <dir>

Serve all files inside directory "dir" using HTTP server, watch
changes on markup files and convert them to HTML files automatically.
If the address is not set, its default to ":8080".

2 files changed, 119 insertions, 1 deletions

diff --git a/cmd/ciigo-example/main.go b/cmd/ciigo-example/main.go
index 2b98c13..a636b0e 100644
--- a/cmd/ciigo-example/main.go
+++ b/cmd/ciigo-example/main.go
@@ -13,7 +13,7 @@ import (
 )
 
 func main() {
-	srv := ciigo.NewServer("./content", ":8080")
+	srv := ciigo.NewServer("./content", ":8080", "./templates/html.tmpl")
 
 	srv.Start()
 }
diff --git a/cmd/ciigo/main.go b/cmd/ciigo/main.go
new file mode 100644
index 0000000..9427be2
--- /dev/null
+++ b/cmd/ciigo/main.go
@@ -0,0 +1,118 @@
+// Copyright 2019, Shulhan <ms@kilabit.info>. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+//
+// ciigo is a CLI to convert, generate, and/or serve a directory that contains
+// markup files, as HTML files.
+//
+// Usage
+//
+// The following section describe how to use ciigo CLI.
+//
+//	ciigo [-template <file>] convert <dir>
+//
+// Scan the "dir" recursively to find markup files (.adoc or .md) and convert
+// them into HTML files.
+// The template "file" is optional, default to "templates/html.tmpl" in the
+// current directory.
+//
+//	ciigo [-template <file>] [-out <file>] generate <dir>
+//
+// Convert all the markup files inside directory "dir" recursively and then
+// embed them into ".go" source file.
+// The output file is optional, default to "ciigo_static.go" in current
+// directory.
+//
+//	ciigo [-template <file>] [-address <ip:port>] serve <dir>
+//
+// Serve all files inside directory "dir" using HTTP server, watch changes on
+// markup files and convert them to HTML files.
+// If the address is not set, its default to ":8080".
+//
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/shuLhan/ciigo"
+	"github.com/shuLhan/share/lib/debug"
+)
+
+func main() {
+	isHelp := flag.Bool("h", false, "print help")
+	isHelp = flag.Bool("help", false, "print help")
+	htmlTemplate := flag.String("template", "templates/html.tmpl",
+		"path to HTML template")
+	outputFile := flag.String("out", "ciigo_static.go",
+		"path to output of .go generated file")
+	address := flag.String("address", ":8080",
+		"the binding address for HTTP server")
+
+	flag.Parse()
+
+	if *isHelp {
+		usage()
+		os.Exit(0)
+	}
+
+	command := flag.Arg(0)
+	if len(command) == 0 {
+		usage()
+		os.Exit(1)
+	}
+
+	dir := flag.Arg(1)
+	if len(dir) == 0 {
+		dir = "."
+	}
+
+	command = strings.ToLower(command)
+	switch command {
+	case "convert":
+		ciigo.Convert(dir, *htmlTemplate)
+	case "generate":
+		ciigo.Generate(dir, *outputFile, *htmlTemplate)
+	case "serve":
+		debug.Value = 2
+		srv := ciigo.NewServer(dir, *address, *htmlTemplate)
+		srv.Start()
+	default:
+		usage()
+		os.Exit(1)
+	}
+}
+
+func usage() {
+	fmt.Println(`
+=  ciigo
+
+A CLI to convert, generate, and/or serve a directory that contains markup
+files, as HTML files.
+
+==  Usage
+
+ciigo [-template <file>] convert <dir>
+
+	Scan the "dir" recursively to find markup files (.adoc or .md)
+	and convert them into HTML files.
+	The template "file" is optional, default to "templates/html.tmpl" in
+	the current directory.
+
+ciigo [-template <file>] [-out <file>] generate <dir>
+
+	Convert all markup files inside directory "dir" recursively and then
+	embed them into ".go" source file.
+	The output file is optional, default to "ciigo_static.go" in current
+	directory.
+
+ciigo [-template <file>] [-address <ip:port>] serve <dir>
+
+	Serve all files inside directory "dir" using HTTP server, watch
+	changes on markup files and convert them to HTML files automatically.
+	If the address is not set, its default to ":8080".
+`)
+}