Reorganization of helpers. Centralized Url/Path logic. Fixed #175.

helpers/path.go

@@ -0,0 +1,120 @@
+// Copyright © 2014 Steve Francia <spf@spf13.com>.
+//
+// Licensed under the Simple Public License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://opensource.org/licenses/Simple-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package helpers
+
+import (
+	"os"
+	"path"
+	"regexp"
+	"strings"
+	"unicode"
+)
+
+var sanitizeRegexp = regexp.MustCompile("[^a-zA-Z0-9./_-]")
+
+// Take a string with any characters and replace it so the string could be used in a path.
+// E.g. Social Media -> social-media
+func MakePath(s string) string {
+	return UnicodeSanitize(strings.ToLower(strings.Replace(strings.TrimSpace(s), " ", "-", -1)))
+}
+
+func Sanitize(s string) string {
+	return sanitizeRegexp.ReplaceAllString(s, "")
+}
+
+func UnicodeSanitize(s string) string {
+	source := []rune(s)
+	target := make([]rune, 0, len(source))
+
+	for _, r := range source {
+		if unicode.IsLetter(r) || unicode.IsDigit(r) || r == '.' || r == '/' || r == '_' || r == '-' {
+			target = append(target, r)
+		}
+	}
+
+	return string(target)
+}
+
+func ReplaceExtension(path string, newExt string) string {
+	f, _ := FileAndExt(path)
+	return f + "." + newExt
+}
+
+// Check if Exists && is Directory
+func DirExists(path string) (bool, error) {
+	fi, err := os.Stat(path)
+	if err == nil && fi.IsDir() {
+		return true, nil
+	}
+	if os.IsNotExist(err) {
+		return false, nil
+	}
+	return false, err
+}
+
+// Check if File / Directory Exists
+func Exists(path string) (bool, error) {
+	_, err := os.Stat(path)
+	if err == nil {
+		return true, nil
+	}
+	if os.IsNotExist(err) {
+		return false, nil
+	}
+	return false, err
+}
+
+func FileAndExt(in string) (name string, ext string) {
+	ext = path.Ext(in)
+	base := path.Base(in)
+
+	if strings.Contains(base, ".") {
+		name = base[:strings.LastIndex(base, ".")]
+	} else {
+		name = in
+	}
+
+	return
+}
+
+func PathPrep(ugly bool, in string) string {
+	if ugly {
+		return Uglify(in)
+	} else {
+		return PrettifyPath(in)
+	}
+}
+
+// /section/name.html -> /section/name/index.html
+// /section/name/  -> /section/name/index.html
+// /section/name/index.html -> /section/name/index.html
+func PrettifyPath(in string) string {
+	if path.Ext(in) == "" {
+		// /section/name/  -> /section/name/index.html
+		if len(in) < 2 {
+			return "/"
+		}
+		return path.Join(path.Clean(in), "index.html")
+	} else {
+		name, ext := FileAndExt(in)
+		if name == "index" {
+			// /section/name/index.html -> /section/name/index.html
+			return path.Clean(in)
+		} else {
+			// /section/name.html -> /section/name/index.html
+			return path.Join(path.Dir(in), name, "index"+ext)
+		}
+	}
+	return in
+}