140 lines
3.3 KiB
Go
140 lines
3.3 KiB
Go
// Package util provides general utilities.
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package util
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import (
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"errors"
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"fmt"
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"os"
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"path/filepath"
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"strings"
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)
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// CheckExtension checks if the file located at path (string)
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// matches the provided extension type
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func CheckExtension(path, ext string) error {
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if filepath.Ext(path) == ext {
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return nil
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} else {
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return errors.New("Invalid extension.")
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}
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}
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func ChangeExtension(in string, outExt string) string {
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return strings.TrimSuffix(in, filepath.Ext(in)) + outExt
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}
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// find the root. check for a .zona.yml first,
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// then check if it's cwd.
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func getRoot(path string) string {
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marker := ".zona.yml"
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for {
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parent := filepath.Dir(path)
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if parent == "/" {
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panic(1)
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}
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candidate := filepath.Join(parent, marker)
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// fmt.Printf("check for: %s\n", candidate)
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if FileExists(candidate) {
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return parent
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} else if parent == "." {
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return path
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}
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path = parent
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}
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}
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func ReplaceRoot(inPath, outRoot string) string {
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relPath := strings.TrimPrefix(inPath, getRoot(inPath))
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outPath := filepath.Join(outRoot, relPath)
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return outPath
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}
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// Indexify converts format path/file.ext
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// into path/file/index.ext
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func Indexify(in string) string {
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ext := filepath.Ext(in)
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trimmed := strings.TrimSuffix(in, ext)
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filename := filepath.Base(trimmed)
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if filename == "index" {
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return in
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}
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prefix := strings.TrimSuffix(trimmed, filename)
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return filepath.Join(prefix, filename, "index"+ext)
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}
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// InDir checks whether checkPath is
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// inside targDir.
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func InDir(checkPath string, targDir string) bool {
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// fmt.Println("checking dir..")
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i := 0
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for i < 10 {
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parent := filepath.Dir(checkPath)
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fmted := filepath.Base(parent)
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switch fmted {
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case targDir:
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// fmt.Printf("%s in %s\n", checkPath, targDir)
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return true
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case ".":
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return false
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}
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checkPath = parent
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i += 1
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}
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return false
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}
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// FileExists returns a boolean indicating
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// whether something exists at the path.
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func FileExists(path string) bool {
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_, err := os.Stat(path)
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return !os.IsNotExist(err)
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}
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// CreateParents creates the parent directories required for a given path
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func CreateParents(path string) error {
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dir := filepath.Dir(path)
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// Check if the parent directory already exists
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// before trying to create it
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if _, dirErr := os.Stat(dir); os.IsNotExist(dirErr) {
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// create directories
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if err := os.MkdirAll(dir, os.ModePerm); err != nil {
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return err
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}
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}
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return nil
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}
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func StripTopDir(path string) string {
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cleanedPath := filepath.Clean(path)
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components := strings.Split(cleanedPath, string(filepath.Separator))
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if len(components) <= 1 {
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return path
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}
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return filepath.Join(components[1:]...)
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}
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func resolveRelativeTo(relPath string, basePath string) string {
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baseDir := filepath.Dir(basePath)
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combined := filepath.Join(baseDir, relPath)
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resolved := filepath.Clean(combined)
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return resolved
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}
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// we want to preserve a valid web-style path
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// and convert relative path to web-style
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// so we need to see
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func NormalizePath(target string, source string) (string, error) {
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fmt.Printf("normalizing: %s\n", target)
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// empty path is root
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if target == "" {
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return "/", nil
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}
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if target[0] == '.' {
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resolved := resolveRelativeTo(target, source)
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normalized := ReplaceRoot(resolved, "/")
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fmt.Printf("Normalized: %s\n", normalized)
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return normalized, nil
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} else {
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return target, nil
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}
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}
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