build: add npm

.dockerignore

@@ -1 +1,2 @@
 dist
+node_modules

.gitignore

@@ -1 +1,4 @@
 dist
+node_modules
+public/css/main.css*
+public/js/main.js*

api.go

@@ -11,7 +11,7 @@ import (
 func ListFiles(w http.ResponseWriter, r *http.Request) {
 	data, err := json.Marshal(files)
 	if err != nil {
-		HttpWriter(w, 500, err.Error())
+		AbortError(w, err)
 		return
 	}
 	w.Write(data)
@@ -21,12 +21,12 @@ func GetFile(w http.ResponseWriter, r *http.Request) {
 	name := r.URL.Query().Get("name")
 	file, ok := files[name]
 	if name == "" || !ok {
-		HttpWriter(w, 404, "file not found")
+		MakeResponse(w, 404, []byte("file not found"))
 		return
 	}
 	data, err := file.Read()
 	if err != nil {
-		HttpWriter(w, 500, err.Error())
+		AbortError(w, err)
 		return
 	}
 	response, err := json.Marshal(map[string]string{
@@ -36,7 +36,7 @@ func GetFile(w http.ResponseWriter, r *http.Request) {
 		"data":   string(data),
 	})
 	if err != nil {
-		HttpWriter(w, 500, err.Error())
+		AbortError(w, err)
 		return
 	}
 	w.Header().Set("Content-Type", "application/json")
@@ -47,21 +47,21 @@ func PostFile(w http.ResponseWriter, r *http.Request) {
 	data, err := ioutil.ReadAll(r.Body)
 	r.Body.Close()
 	if err != nil {
-		HttpWriter(w, 500, err.Error())
+		AbortError(w, err)
 		return
 	}
 	f := configui.File{}
 	if err := json.Unmarshal(data, &f); err != nil {
-		HttpWriter(w, 500, err.Error())
+		AbortError(w, err)
 		return
 	}
 	file, ok := files[f.Alias]
 	if !ok {
-		HttpWriter(w, 404, "file not found")
+		MakeResponse(w, 404, []byte("file not found"))
 		return
 	}
 	if err := file.Write([]byte(f.Data)); err != nil {
-		HttpWriter(w, 500, err.Error())
+		AbortError(w, err)
 		return
 	}
 	w.Write([]byte("ok"))
@@ -71,12 +71,12 @@ func Apply(w http.ResponseWriter, r *http.Request) {
 	name := r.URL.Query().Get("name")
 	file, ok := files[name]
 	if name == "" || !ok {
-		HttpWriter(w, 404, "file not found")
+		MakeResponse(w, 404, []byte("file not found"))
 		return
 	}
 	result, err := file.Do()
 	if err != nil {
-		HttpWriter(w, 500, err.Error())
+		AbortError(w, err)
 		return
 	}
 	w.Write([]byte(result))
@@ -95,27 +95,31 @@ func LoadConfig(w http.ResponseWriter, r *http.Request) {
 	data, err := ioutil.ReadAll(r.Body)
 	r.Body.Close()
 	if err != nil {
-		HttpWriter(w, 500, err.Error())
+		AbortError(w, err)
 		return
 	}
 	ftmp, err := configui.ReadConfig(string(data))
 	if err != nil {
-		HttpWriter(w, 500, err.Error())
+		AbortError(w, err)
 		return
 	}
 	files = configui.GetFileMap(ftmp)
 	w.Write([]byte("ok"))
 }
 
-func GetConfig(w http.ResponseWriter, r *http.Request) {
+func getConfigHandler(w http.ResponseWriter, r *http.Request) {
-	config := []configui.File{}
+	data, err := GetConfig()
-	for _, f := range files {
-		config = append(config, *f)
-	}
-	data, err := json.Marshal(config)
 	if err != nil {
-		HttpWriter(w, 500, err.Error())
+		AbortError(w, err)
 		return
 	}
 	w.Write(data)
 }
+
+func GetConfig() ([]byte, error) {
+	config := []configui.File{}
+	for _, f := range files {
+		config = append(config, *f)
+	}
+	return json.Marshal(config)
+}

main.go

@@ -1,7 +1,6 @@
 package main
 
 import (
-	"bytes"
 	"embed"
 	"flag"
 	"fmt"
@@ -13,6 +12,7 @@ import (
 	"time"
 
 	"kumoly.io/tools/configui/configui"
+	"kumoly.io/tools/configui/public"
 )
 
 //go:embed templates
@@ -27,6 +27,7 @@ var (
 
 	flagBind    string
 	flagLogFile string
+	flagAllow   string
 	flagVer     bool
 )
 
@@ -42,6 +43,7 @@ func init() {
 	flag.StringVar(&flagAlias, "n", "", "alias of file")
 	flag.StringVar(&flagAction, "c", "", "cmd to apply")
 	flag.StringVar(&flagLogFile, "log", "", "log to file")
+	flag.StringVar(&flagAllow, "allow", "", "IPs to allow, blank to allow all")
 	flag.StringVar(&flagBind, "bind", "localhost:8000", "address to bind")
 	flag.BoolVar(&flagVer, "v", false, "show version")
 	flag.Usage = func() {
@@ -96,7 +98,7 @@ func main() {
 	mux := http.NewServeMux()
 	mux.HandleFunc("/api/conf", func(w http.ResponseWriter, r *http.Request) {
 		if r.Method == "GET" {
-			GetConfig(w, r)
+			getConfigHandler(w, r)
 		} else if r.Method == "POST" {
 			LoadConfig(w, r)
 		} else {
@@ -133,28 +135,15 @@ func main() {
 			w.WriteHeader(404)
 		}
 	})
-	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
-		if r.URL.Path != "/" {
-			http.NotFound(w, r)
-			return
-		}
-		buf := &bytes.Buffer{}
-		err := tmpl.ExecuteTemplate(buf, "home", nil)
-		if err != nil {
-			w.WriteHeader(500)
-			w.Write([]byte(err.Error()))
-		} else {
-			w.Write(buf.Bytes())
-		}
-	})
 
+	mux.Handle("/public/", http.StripPrefix("/public/", http.FileServer(http.FS(public.FS))))
 	tmpl = template.Must(template.New("").ParseFS(tmplFS, "templates/*.tmpl", "templates/**/*.tmpl"))
-
+	setRoutes(mux)
 	server := &http.Server{
 		Addr:         flagBind,
 		WriteTimeout: time.Second * 3,
 		ReadTimeout:  time.Second * 30,
-		Handler:      LogMiddleware(mux),
+		Handler:      Middleware(mux),
 	}
 
 	// start server

netutil.go

@@ -0,0 +1,108 @@
+package main
+
+import (
+	"bytes"
+	"log"
+	"net"
+	"net/http"
+	"strconv"
+	"strings"
+)
+
+type ResponseWriter struct {
+	http.ResponseWriter
+	StatueCode int
+}
+
+func (w *ResponseWriter) WriteHeader(statusCode int) {
+	if w.StatueCode != 0 {
+		return
+	}
+	w.StatueCode = statusCode
+	w.ResponseWriter.WriteHeader(statusCode)
+}
+
+func (w *ResponseWriter) Write(body []byte) (int, error) {
+	if w.StatueCode == 0 {
+		w.WriteHeader(200)
+	}
+	return w.ResponseWriter.Write(body)
+}
+
+func MakeResponse(w http.ResponseWriter, status int, body []byte) (int, error) {
+	w.WriteHeader(status)
+	return w.Write(body)
+}
+
+func AbortError(w http.ResponseWriter, err interface{}) (int, error) {
+	switch v := err.(type) {
+	case int:
+		w.WriteHeader(v)
+		return w.Write([]byte(strconv.Itoa(v)))
+	case string:
+		w.WriteHeader(500)
+		return w.Write([]byte(v))
+	case error:
+		w.WriteHeader(500)
+		return w.Write([]byte(v.Error()))
+	default:
+		w.WriteHeader(500)
+		return w.Write([]byte(strconv.Itoa(500)))
+	}
+}
+
+func Catch(rw *ResponseWriter, r *http.Request) {
+	ex := recover()
+	if ex != nil {
+		AbortError(rw, r)
+		log.Printf("%s %s %d %s %s\n", GetIP(r), r.Method, rw.StatueCode, r.URL, r.Header.Get("User-Agent"))
+	}
+}
+
+func Middleware(next http.Handler) http.Handler {
+	return http.HandlerFunc(
+		func(w http.ResponseWriter, r *http.Request) {
+			rw := &ResponseWriter{w, 0}
+			defer Catch(rw, r)
+			abort := false
+			if flagAllow != "" {
+				if !matchIPGlob(GetIP(r), flagAllow) {
+					MakeResponse(rw, 403, []byte("permission denyed"))
+					abort = true
+				}
+			}
+			if !abort {
+				next.ServeHTTP(rw, r)
+			}
+			log.Printf("%s %s %d %s %s\n", GetIP(r), r.Method, rw.StatueCode, r.URL, r.Header.Get("User-Agent"))
+		},
+	)
+}
+
+func GetIP(r *http.Request) string {
+	ip := r.Header.Get("X-Real-Ip")
+	if ip == "" {
+		ips := r.Header.Get("X-Forwarded-For")
+		ipArr := strings.Split(ips, ",")
+		ip = strings.Trim(ipArr[len(ipArr)-1], " ")
+	}
+	if ip == "" {
+		var err error
+		ip, _, err = net.SplitHostPort(r.RemoteAddr)
+		if err != nil {
+			ip = r.RemoteAddr
+		}
+	}
+	return ip
+}
+
+func Parse(w http.ResponseWriter, name string, data interface{}) error {
+	buf := &bytes.Buffer{}
+	err := tmpl.ExecuteTemplate(buf, "home", data)
+	if err != nil {
+		AbortError(w, err)
+		return err
+	}
+	_, err = w.Write(buf.Bytes())
+	return err
+}

package.json

@@ -0,0 +1,26 @@
+{
+  "name": "configui",
+  "version": "1.0.0",
+  "description": "a web app to edit and action on update",
+  "scripts": {
+    "build-sass": "sass --style compressed src/main.scss public/css/main.css",
+    "build-js": "parcel build src/main.js --dist-dir public/js",
+    "start":"npm run build-sass && npm run build-js",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git@kumoly.io:tools/configui.git"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "bulma": "^0.9.3",
+    "prismjs": "^1.25.0",
+    "sass": "^1.43.2"
+  },
+  "devDependencies": {
+    "@parcel/transformer-sass": "^2.0.0",
+    "parcel": "^2.0.0"
+  }
+}

public/embed.go

@@ -0,0 +1,6 @@
+package public
+
+import "embed"
+
+//go:embed js css
+var FS embed.FS

route.go

@@ -0,0 +1,42 @@
+package main
+
+import (
+	"net/http"
+)
+
+func setRoutes(mux *http.ServeMux) {
+
+	mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path != "/" {
+			http.NotFound(w, r)
+			return
+		}
+
+		Files := []string{}
+		for file := range files {
+			Files = append(Files, files[file].Alias)
+		}
+
+		contentB, err := GetConfig()
+		content := ""
+		if err != nil {
+			content = err.Error()
+		} else {
+			content = string(contentB)
+		}
+
+		data := struct {
+			Active  string
+			Files   []string
+			Content string
+			Lang    string
+		}{
+			Files:   Files,
+			Active:  "ConfigUI",
+			Content: content,
+			Lang:    "json",
+		}
+
+		Parse(w, "home", data)
+	})
+}

src/main.js

@@ -0,0 +1,5 @@
+import Prism from "prismjs";
+import "prismjs/plugins/custom-class/prism-custom-class";
+
+
+Prism.plugins.customClass.map({ number: "prism-number", tag: "prism-tag" });

src/main.scss

@@ -0,0 +1,2 @@
+@charset "utf-8";
+@import "../node_modules/bulma/bulma.sass";

src/tmp.css

@@ -0,0 +1,233 @@
+/* Code-Input Compability */
+/* By WebCoder49 */
+/* First Published on CSS-Tricks.com */
+
+textarea {
+    border: none;
+    overflow: auto;
+    outline: none;
+
+    -webkit-box-shadow: none;
+    -moz-box-shadow: none;
+    box-shadow: none;
+
+    resize: none; /*remove the resize handle on the bottom right*/
+}
+.content .tag, .content .number {
+    display: inline;
+    padding: inherit;
+    font-size: inherit;
+    line-height: inherit;
+    text-align: inherit;
+    vertical-align: inherit;
+    border-radius: inherit;
+    font-weight: inherit;
+    white-space: inherit;
+    background: inherit;
+    margin: inherit;
+  }
+  
+/* Please see the article */
+
+#editing, #highlighting {
+    /* Both elements need the same text and space styling so they are directly on top of each other */
+    margin: 10px;
+    padding: 10px;
+    border: 0;
+    width: calc(100% - 32px);
+    height: 150px;
+  }
+  #editing, #highlighting, #highlighting * {
+    /* Also add text styles to highlighing tokens */
+    font-size: 15pt;
+    font-family: monospace;
+    line-height: 20pt;
+    tab-size: 2;
+  }
+  
+  
+  #editing, #highlighting {
+    /* In the same place */
+    position: absolute;
+    top: 0;
+    left: 0;
+  }
+  
+  
+  /* Move the textarea in front of the result */
+  
+  #editing {
+    z-index: 1;
+  }
+  #highlighting {
+    z-index: 0;
+  }
+  
+  
+  /* Make textarea almost completely transparent */
+  
+  #editing {
+    color: transparent;
+    background: transparent;
+    caret-color: white; /* Or choose your favourite color */
+  }
+  
+  /* Can be scrolled */
+  #editing, #highlighting {
+    overflow: auto;
+    white-space: nowrap; /* Allows textarea to scroll horizontally */
+  }
+  
+  /* No resize on textarea */
+  #editing {
+    resize: none;
+  }
+  
+  /* Paragraphs; First Image */
+  * {
+    font-family: "Fira Code", monospace;
+  }
+  p code {
+    border-radius: 2px;
+    background-color: #eee;
+    color: #111;
+  }
+  
+  
+  /* Syntax Highlighting from prism.js starts below, partly modified: */
+  
+  /* PrismJS 1.23.0
+  https://prismjs.com/download.html#themes=prism-funky&languages=markup */
+  /**
+   * prism.js Funky theme
+   * Based on “Polyfilling the gaps” talk slides http://lea.verou.me/polyfilling-the-gaps/
+   * @author Lea Verou
+   */
+  
+  code[class*="language-"],
+  pre[class*="language-"] {
+    font-family: Consolas, Monaco, 'Andale Mono', 'Ubuntu Mono', monospace;
+    font-size: 1em;
+    text-align: left;
+    white-space: pre;
+    word-spacing: normal;
+    word-break: normal;
+    word-wrap: normal;
+    line-height: 1.5;
+  
+    -moz-tab-size: 4;
+    -o-tab-size: 4;
+    tab-size: 4;
+  
+    -webkit-hyphens: none;
+    -moz-hyphens: none;
+    -ms-hyphens: none;
+    hyphens: none;
+  }
+  
+  /* Code blocks */
+  pre[class*="language-"] {
+    padding: .4em .8em;
+    margin: .5em 0;
+    overflow: auto;
+    /* background: url('data:image/svg+xml;charset=utf-8,<svg%20version%3D"1.1"%20xmlns%3D"http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg"%20width%3D"100"%20height%3D"100"%20fill%3D"rgba(0%2C0%2C0%2C.2)">%0D%0A<polygon%20points%3D"0%2C50%2050%2C0%200%2C0"%20%2F>%0D%0A<polygon%20points%3D"0%2C100%2050%2C100%20100%2C50%20100%2C0"%20%2F>%0D%0A<%2Fsvg>');
+    background-size: 1em 1em; - WebCoder49*/
+    background: black; /* - WebCoder49 */
+  }
+  
+  code[class*="language-"] {
+    background: black;
+    color: white;
+    box-shadow: -.3em 0 0 .3em black, .3em 0 0 .3em black;
+  }
+  
+  /* Inline code */
+  :not(pre) > code[class*="language-"] {
+    padding: .2em;
+    border-radius: .3em;
+    box-shadow: none;
+    white-space: normal;
+  }
+  
+  .token.comment,
+  .token.prolog,
+  .token.doctype,
+  .token.cdata {
+    color: #aaa;
+  }
+  
+  .token.punctuation {
+    color: #999;
+  }
+  
+  .token.namespace {
+    opacity: .7;
+  }
+  
+  .token.property,
+  .token.tag,
+  .token.boolean,
+  .token.number,
+  .token.constant,
+  .token.symbol {
+    color: #0cf;
+  }
+  
+  .token.selector,
+  .token.attr-name,
+  .token.string,
+  .token.char,
+  .token.builtin {
+    color: yellow;
+  }
+  
+  .token.operator,
+  .token.entity,
+  .token.url,
+  .language-css .token.string,
+  .token.variable,
+  .token.inserted {
+    color: yellowgreen;
+  }
+  
+  .token.atrule,
+  .token.attr-value,
+  .token.keyword {
+    color: deeppink;
+  }
+  
+  .token.regex,
+  .token.important {
+    color: orange;
+  }
+  
+  .token.important,
+  .token.bold {
+    font-weight: bold;
+  }
+  .token.italic {
+    font-style: italic;
+  }
+  
+  .token.entity {
+    cursor: help;
+  }
+  
+  .token.deleted {
+    color: red;
+  }
+  
+  /* Plugin styles: Diff Highlight */
+  pre.diff-highlight.diff-highlight > code .token.deleted:not(.prefix),
+  pre > code.diff-highlight.diff-highlight .token.deleted:not(.prefix) {
+    background-color: rgba(255, 0, 0, .3);
+    display: inline;
+  }
+  
+  pre.diff-highlight.diff-highlight > code .token.inserted:not(.prefix),
+  pre > code.diff-highlight.diff-highlight .token.inserted:not(.prefix) {
+    background-color: rgba(0, 255, 128, .3);
+    display: inline;
+  }
+  
+  /* End of prism.js syntax highlighting*/

src/tmp.js

@@ -0,0 +1,39 @@
+// codeInput
+// by WebCoder49
+// Based on a CSS-Tricks Post
+// Needs Prism.js
+function update(text) {
+    let result_element = document.querySelector("#highlighting-content");
+    // Handle final newlines (see article)
+    if(text[text.length-1] == "\n") {
+      text += " ";
+    }
+    // Update code
+    result_element.innerHTML = text.replace(new RegExp("&", "g"), "&amp;").replace(new RegExp("<", "g"), "&lt;"); /* Global RegExp */
+    // Syntax Highlight
+    Prism.highlightElement(result_element);
+  }
+  
+  function sync_scroll(element) {
+    /* Scroll result to scroll coords of event - sync with textarea */
+    let result_element = document.querySelector("#highlighting");
+    // Get and set x and y
+    result_element.scrollTop = element.scrollTop;
+    result_element.scrollLeft = element.scrollLeft;
+  }
+  
+  function check_tab(element, event) {
+    let code = element.value;
+    if(event.key == "Tab") {
+      /* Tab key pressed */
+      event.preventDefault(); // stop normal
+      let before_tab = code.slice(0, element.selectionStart); // text before tab
+      let after_tab = code.slice(element.selectionEnd, element.value.length); // text after tab
+      let cursor_pos = element.selectionEnd + 1; // where cursor moves after tab - moving forward by 1 char to after tab
+      element.value = before_tab + "\t" + after_tab; // add tab char
+      // move cursor
+      element.selectionStart = cursor_pos;
+      element.selectionEnd = cursor_pos;
+      update(element.value); // Update text to include indent
+    }
+  }

templates/base/footer.tmpl

@@ -1,6 +1,9 @@
 {{define "base/footer"}}
   <script src="/public/js/main.js"></script>
-  <script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script>
+  <!-- <script src="https://cdn.jsdelivr.net/npm/axios/dist/axios.min.js"></script> -->
+  
+  <script src="public/js/prism1.23.0.min.js"></script>
+  <!-- <script src="https://cdnjs.cloudflare.com/ajax/libs/prism/1.23.0/prism.min.js"></script> -->
   </body>
 </html>
 {{end}}

templates/base/header.tmpl

@@ -4,8 +4,10 @@
   <head>
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width, initial-scale=1">
-    <title>Serviced</title>
+    <title>ConfigUI</title>
-    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bulma@0.9.3/css/bulma.min.css">
+    <link rel="stylesheet" href="/public/css/bulma0.9.3.min.css">
+    <!-- <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bulma@0.9.3/css/bulma.min.css"> -->
+    <link rel="stylesheet" href="/public/css/main.css">
   </head>
   <body>
 {{end}}

templates/home.tmpl

@@ -1,14 +1,54 @@
 {{define "home"}}
 {{template "base/header" .}}
-<section class="section">
+
-  <div class="container">
+<div class="columns is-mobile is-centered">
-    <h1 class="title">
+  <div class="column is-half">
-    Hello World
+    <section class="section">
-    </h1>
+      <container class="container is-max-desktop">
-    <p class="subtitle">
+        <h1 class="title">ConfigUI</h1>
-    My first website with <strong>Bulma</strong>!
+      </container>
-    </p>
+    </section>
   </div>
-</section>
+</div>
+
+<div class="tile is-ancestor mx-2">
+  <div class="tile is-3 is-vertical is-parent">
+    <div class="tile is-child box">
+      <section class="is-large">
+        <aside class="menu">
+          <p class="menu-label">
+            Files
+          </p>
+          <ul class="menu-list">
+            {{ range .Files }}
+            <li><a>{{ . }}</a></li>
+            {{ end }}
+          </ul>
+          <p class="menu-label">
+            ConfigUI
+          </p>
+          <ul class="menu-list">
+            <li><a{{if eq .Active "ConfigUI"}} class="is-active"{{end}}>config.json</a></li>
+          </ul>
+        </aside>
+      </section>
+    </div>
+    <div class="tile is-child box">
+      <p class="title">Two</p>
+    </div>
+  </div>
+  <div class="tile is-parent">
+    <div class="tile is-child box">
+      <p class="title">Three</p>
+        <textarea class="content" placeholder="Enter HTML Source Code" id="editing" spellcheck="false" oninput="update(this.value); sync_scroll(this);" onscroll="sync_scroll(this);" onkeydown="check_tab(this, event);"></textarea>
+        <pre id="highlighting" aria-hidden="true">
+          <code class="language-html" id="highlighting-content">{{.Content}}</code>
+        </pre>
+
+      <!-- <code-input class="content" id="edit" lang="{{.Lang}}" name="config">{{.Content}}</code-input> -->
+    </div>
+  </div>
+</div>
+
 {{template "base/footer" .}}
 {{end}}

util.go

@@ -4,26 +4,51 @@ import (
 	"archive/tar"
 	"compress/gzip"
 	"io"
-	"log"
-	"net/http"
 	"os"
 	"strings"
 )
 
-func LogMiddleware(next http.Handler) http.Handler {
+func matchIPGlob(ip, pattern string) bool {
-	return http.HandlerFunc(
+	parts := strings.Split(pattern, ".")
-		func(w http.ResponseWriter, r *http.Request) {
+	seg := strings.Split(ip, ".")
-			defer func() {
+	for i, part := range parts {
-				r := recover()
+
-				if r != nil {
+		// normalize pattern to 3 digits
-					log.Println("panic", r)
+		switch len(part) {
-					w.WriteHeader(500)
+		case 1:
-				}
+			if part == "*" {
-			}()
+				part = "***"
-			next.ServeHTTP(w, r)
+			} else {
-			log.Printf("%s %s %s %s\n", r.RemoteAddr, r.Method, r.URL, r.Header.Get("User-Agent"))
+				part = "00" + part
-		},
+			}
-	)
+		case 2:
+			if strings.HasPrefix(part, "*") {
+				part = "*" + part
+			} else if strings.HasSuffix(part, "*") {
+				part = part + "*"
+			} else {
+				part = "0" + part
+			}
+		}
+
+		// normalize ip to 3 digits
+		switch len(seg[i]) {
+		case 1:
+			seg[i] = "00" + seg[i]
+		case 2:
+			seg[i] = "0" + seg[i]
+		}
+
+		for j := range part {
+			if string(part[j]) == "*" {
+				continue
+			}
+			if part[j] != seg[i][j] {
+				return false
+			}
+		}
+	}
+	return true
 }
 
 func bundle(buf io.Writer, paths []string, flat bool) error {
@@ -83,8 +108,3 @@ func bundle(buf io.Writer, paths []string, flat bool) error {
 
 	return nil
 }
-
-func HttpWriter(w http.ResponseWriter, status int, errStr string) {
-	w.WriteHeader(status)
-	w.Write([]byte(errStr))
-}