add basic features

Makefile

@@ -0,0 +1,33 @@
+.PHONY: all format lint clean
+
+GOCMD=go
+LDFLAGS="-s -w ${LDFLAGS_OPT}"
+
+all: build format lint ## Format, lint and build
+
+build: ## Build
+	go build -o bin/go-grip main.go
+
+test: ## Test
+	${GOCMD} test ./...
+
+compile: ## Compile for every OS and Platform
+	echo "Compiling for every OS and Platform"
+	GOOS=darwin GOARCH=amd64 go build -o bin/go-grip-darwin-amd64 main.go
+	GOOS=darwin GOARCH=arm64 go build -o bin/go-grip-darwin-arm64 main.go
+	GOOS=linux GOARCH=amd64 go build -o bin/go-grip-linux-amd64 main.go
+	GOOS=linux GOARCH=arm64 go build -o bin/go-grip-linux-arm64 main.go
+	GOOS=windows GOARCH=amd64 go build -o bin/go-grip-windows-amd64 main.go
+	GOOS=windows GOARCH=arm64 go build -o bin/go-grip-windows-arm64 main.go
+
+format: ## Format code
+	${GOCMD} fmt ./...
+
+lint: ## Run linter
+	golangci-lint run
+
+clean: ## Cleanup build dir
+	rm -r bin/
+
+help: ## Display this help screen
+	@grep -h -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'

README.md

@@ -0,0 +1,16 @@
+<br />
+<div align="center">
+  <a href="#">
+    <img src=".github/assets/nix-dots.png" alt="Logo" height="80">
+  </a>
+</div>
+
+# go-grip
+
+## Getting started on macOS
+
+To get started on a bare `macOS` installation, first install Nix:
+
+```
+curl --proto '=https' --tlsv1.2 -sSf -L https://install.determinate.systems/nix | sh -s -- install
+```

cmd/root.go

@@ -1,34 +1,31 @@
-/*
-Copyright © 2024 NAME HERE <EMAIL ADDRESS>
-
-*/
 package cmd
 
 import (
 	"os"
 
+	"github.com/chrishrb/go-grip/pkg"
 	"github.com/spf13/cobra"
 )
 
-
-
-// rootCmd represents the base command when called without any subcommands
 var rootCmd = &cobra.Command{
-	Use:   "go-grip",
-	Short: "A brief description of your application",
-	Long: `A longer description that spans multiple lines and likely contains
-examples and usage of using your application. For example:
+	Use:   "go-grip [file]",
+	Short: "Render markdown document as html",
+	Args:  cobra.MatchAll(cobra.MinimumNArgs(1), cobra.OnlyValidArgs),
+	Run: func(cmd *cobra.Command, args []string) {
+		dark, _ := cmd.Flags().GetBool("dark")
+		browser, _ := cmd.Flags().GetBool("browser")
+		port, _ := cmd.Flags().GetInt("port")
 
-Cobra is a CLI library for Go that empowers applications.
-This application is a tool to generate the needed files
-to quickly create a Cobra application.`,
-	// Uncomment the following line if your bare application
-	// has an action associated with it:
-	// Run: func(cmd *cobra.Command, args []string) { },
+		client := pkg.Client{Dark: dark, OpenBrowser: browser, Port: port}
+
+		bytes, err := client.MdToHTML(args[0])
+		cobra.CheckErr(err)
+
+		err = client.Serve(bytes)
+		cobra.CheckErr(err)
+	},
 }
 
-// Execute adds all child commands to the root command and sets flags appropriately.
-// This is called by main.main(). It only needs to happen once to the rootCmd.
 func Execute() {
 	err := rootCmd.Execute()
 	if err != nil {
@@ -37,15 +34,7 @@ func Execute() {
 }
 
 func init() {
-	// Here you will define your flags and configuration settings.
-	// Cobra supports persistent flags, which, if defined here,
-	// will be global for your application.
-
-	// rootCmd.PersistentFlags().StringVar(&cfgFile, "config", "", "config file (default is $HOME/.go-grip.yaml)")
-
-	// Cobra also supports local flags, which will only run
-	// when this action is called directly.
-	rootCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+	rootCmd.Flags().BoolP("dark", "d", false, "Darkmode")
+	rootCmd.Flags().BoolP("browser", "b", true, "Open new browser tab")
+	rootCmd.Flags().IntP("port", "p", 6419, "Port to use")
 }
-
-

go.mod

@@ -3,6 +3,9 @@ module github.com/chrishrb/go-grip
 go 1.22.7
 
 require (
+	github.com/alecthomas/chroma/v2 v2.14.0 // indirect
+	github.com/dlclark/regexp2 v1.11.4 // indirect
+	github.com/gomarkdown/markdown v0.0.0-20240930133441-72d49d9543d8 // indirect
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/spf13/cobra v1.8.1 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect

go.sum

@@ -1,4 +1,10 @@
+github.com/alecthomas/chroma/v2 v2.14.0 h1:R3+wzpnUArGcQz7fCETQBzO5n9IMNi13iIs46aU4V9E=
+github.com/alecthomas/chroma/v2 v2.14.0/go.mod h1:QolEbTfmUHIMVpBqxeDnNBj2uoeI4EbYP4i6n68SG4I=
 github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/dlclark/regexp2 v1.11.4 h1:rPYF9/LECdNymJufQKmri9gV604RvvABwgOA8un7yAo=
+github.com/dlclark/regexp2 v1.11.4/go.mod h1:DHkYz0B9wPfa6wondMfaivmHpzrQ3v9q8cnmRbL6yW8=
+github.com/gomarkdown/markdown v0.0.0-20240930133441-72d49d9543d8 h1:4txT5G2kqVAKMjzidIabL/8KqjIK71yj30YOeuxLn10=
+github.com/gomarkdown/markdown v0.0.0-20240930133441-72d49d9543d8/go.mod h1:JDGcbDT52eL4fju3sZ4TeHGsQwhG9nbDV21aMyhwPoA=
 github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
 github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=

pkg/client.go

@@ -0,0 +1,7 @@
+package pkg
+
+type Client struct {
+	Dark        bool
+	OpenBrowser bool
+	Port        int
+}

pkg/open.go

@@ -0,0 +1,23 @@
+package pkg
+
+import (
+	"os/exec"
+	"runtime"
+)
+
+func Open(url string) error {
+	var cmd string
+	var args []string
+
+	switch runtime.GOOS {
+	case "windows":
+		cmd = "cmd"
+		args = []string{"/c", "start"}
+	case "darwin":
+		cmd = "open"
+	default: // "linux", "freebsd", "openbsd", "netbsd"
+		cmd = "xdg-open"
+	}
+	args = append(args, url)
+	return exec.Command(cmd, args...).Start()
+}

pkg/parser.go

@@ -0,0 +1,48 @@
+package pkg
+
+import (
+	"io"
+	"os"
+
+	"github.com/alecthomas/chroma/v2/quick"
+	"github.com/gomarkdown/markdown"
+	"github.com/gomarkdown/markdown/ast"
+	"github.com/gomarkdown/markdown/html"
+	"github.com/gomarkdown/markdown/parser"
+)
+
+func (client *Client) MdToHTML(filename string) ([]byte, error) {
+	bytes, err := os.ReadFile(filename)
+	if err != nil {
+		return nil, err
+	}
+
+	extensions := parser.CommonExtensions | parser.AutoHeadingIDs
+	p := parser.NewWithExtensions(extensions)
+	doc := p.Parse(bytes)
+
+	htmlFlags := html.CommonFlags
+	opts := html.RendererOptions{Flags: htmlFlags, RenderNodeHook: client.renderHookCodeBlock}
+	renderer := html.NewRenderer(opts)
+
+	return markdown.Render(doc, renderer), err
+}
+
+func (client *Client) renderHookCodeBlock(w io.Writer, node ast.Node, entering bool) (ast.WalkStatus, bool) {
+	block, ok := node.(*ast.CodeBlock)
+	if !ok {
+		return ast.GoToNext, false
+	}
+
+	var style string
+	switch client.Dark {
+	case true:
+		style = "github-dark"
+	default:
+		style = "github"
+	}
+
+	quick.Highlight(w, string(block.Literal), string(block.Info), "html", style)
+
+	return ast.GoToNext, true
+}

pkg/webserver.go

@@ -0,0 +1,50 @@
+package pkg
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"path/filepath"
+	"text/template"
+)
+
+type htmlStruct struct {
+	Content  string
+	Darkmode bool
+}
+
+func (client *Client) Serve(htmlContent []byte) error {
+	// Serve static files
+	fs := http.FileServer(http.Dir("./static"))
+	http.Handle("/static/", http.StripPrefix("/static/", fs))
+
+	// Serve website with rendered markdown
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		err := serveTemplate(w, htmlStruct{Content: string(htmlContent), Darkmode: client.Dark})
+		if err != nil {
+			log.Fatal(err)
+		}
+	})
+
+	addr := fmt.Sprintf("http://localhost:%d", client.Port)
+	fmt.Printf("Starting server: %s\n", addr)
+
+	if client.OpenBrowser {
+		Open(addr)
+	}
+
+	http.ListenAndServe(fmt.Sprintf(":%d", client.Port), nil)
+
+	return nil
+}
+
+func serveTemplate(w http.ResponseWriter, html htmlStruct) error {
+	w.Header().Set("Content-Type", "text/html")
+	lp := filepath.Join("templates", "layout.html")
+	tmpl, err := template.ParseFiles(lp)
+	if err != nil {
+		return err
+	}
+	err = tmpl.Execute(w, html)
+	return err
+}

templates/layout.html

@@ -0,0 +1,19 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <meta charset="utf-8">
+	<title>Markdown Preview</title>
+  {{if .Darkmode }}
+  <link rel="stylesheet" href="/static/css/github-markdown-dark.css">
+  {{else}}
+  <link rel="stylesheet" href="/static/css/github-markdown-light.css">
+  {{end}}
+</head>
+<body class="markdown-body entry-content container-lg">
+  <div style="padding: 32px;">
+    <div class="">
+    {{ .Content }}
+    </div>
+  </div>
+</body>
+</html>