forgejo/modules/util/path.go
zeripath bb0ff77e46
Share HTML template renderers and create a watcher framework (#20218)
The recovery, API, Web and package frameworks all create their own HTML
Renderers. This increases the memory requirements of Gitea
unnecessarily with duplicate templates being kept in memory.

Further the reloading framework in dev mode for these involves locking
and recompiling all of the templates on each load. This will potentially
hide concurrency issues and it is inefficient.

This PR stores the templates renderer in the context and stores this
context in the NormalRoutes, it then creates a fsnotify.Watcher
framework to watch files.

The watching framework is then extended to the mailer templates which
were previously not being reloaded in dev.

Then the locales are simplified to a similar structure.

Fix #20210 
Fix #20211
Fix #20217

Signed-off-by: Andrew Thornton <art27@cantab.net>
2022-08-28 10:43:25 +01:00

218 lines
5.4 KiB
Go

// Copyright 2017 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package util
import (
"errors"
"net/url"
"os"
"path"
"path/filepath"
"regexp"
"runtime"
)
// EnsureAbsolutePath ensure that a path is absolute, making it
// relative to absoluteBase if necessary
func EnsureAbsolutePath(path, absoluteBase string) string {
if filepath.IsAbs(path) {
return path
}
return filepath.Join(absoluteBase, path)
}
const notRegularFileMode os.FileMode = os.ModeSymlink | os.ModeNamedPipe | os.ModeSocket | os.ModeDevice | os.ModeCharDevice | os.ModeIrregular
// GetDirectorySize returns the disk consumption for a given path
func GetDirectorySize(path string) (int64, error) {
var size int64
err := filepath.Walk(path, func(_ string, info os.FileInfo, err error) error {
if info != nil && (info.Mode()&notRegularFileMode) == 0 {
size += info.Size()
}
return err
})
return size, err
}
// IsDir returns true if given path is a directory,
// or returns false when it's a file or does not exist.
func IsDir(dir string) (bool, error) {
f, err := os.Stat(dir)
if err == nil {
return f.IsDir(), nil
}
if os.IsNotExist(err) {
return false, nil
}
return false, err
}
// IsFile returns true if given path is a file,
// or returns false when it's a directory or does not exist.
func IsFile(filePath string) (bool, error) {
f, err := os.Stat(filePath)
if err == nil {
return !f.IsDir(), nil
}
if os.IsNotExist(err) {
return false, nil
}
return false, err
}
// IsExist checks whether a file or directory exists.
// It returns false when the file or directory does not exist.
func IsExist(path string) (bool, error) {
_, err := os.Stat(path)
if err == nil || os.IsExist(err) {
return true, nil
}
if os.IsNotExist(err) {
return false, nil
}
return false, err
}
func statDir(dirPath, recPath string, includeDir, isDirOnly, followSymlinks bool) ([]string, error) {
dir, err := os.Open(dirPath)
if err != nil {
return nil, err
}
defer dir.Close()
fis, err := dir.Readdir(0)
if err != nil {
return nil, err
}
statList := make([]string, 0)
for _, fi := range fis {
if CommonSkip(fi.Name()) {
continue
}
relPath := path.Join(recPath, fi.Name())
curPath := path.Join(dirPath, fi.Name())
if fi.IsDir() {
if includeDir {
statList = append(statList, relPath+"/")
}
s, err := statDir(curPath, relPath, includeDir, isDirOnly, followSymlinks)
if err != nil {
return nil, err
}
statList = append(statList, s...)
} else if !isDirOnly {
statList = append(statList, relPath)
} else if followSymlinks && fi.Mode()&os.ModeSymlink != 0 {
link, err := os.Readlink(curPath)
if err != nil {
return nil, err
}
isDir, err := IsDir(link)
if err != nil {
return nil, err
}
if isDir {
if includeDir {
statList = append(statList, relPath+"/")
}
s, err := statDir(curPath, relPath, includeDir, isDirOnly, followSymlinks)
if err != nil {
return nil, err
}
statList = append(statList, s...)
}
}
}
return statList, nil
}
// StatDir gathers information of given directory by depth-first.
// It returns slice of file list and includes subdirectories if enabled;
// it returns error and nil slice when error occurs in underlying functions,
// or given path is not a directory or does not exist.
//
// Slice does not include given path itself.
// If subdirectories is enabled, they will have suffix '/'.
func StatDir(rootPath string, includeDir ...bool) ([]string, error) {
if isDir, err := IsDir(rootPath); err != nil {
return nil, err
} else if !isDir {
return nil, errors.New("not a directory or does not exist: " + rootPath)
}
isIncludeDir := false
if len(includeDir) != 0 {
isIncludeDir = includeDir[0]
}
return statDir(rootPath, "", isIncludeDir, false, false)
}
func isOSWindows() bool {
return runtime.GOOS == "windows"
}
// FileURLToPath extracts the path information from a file://... url.
func FileURLToPath(u *url.URL) (string, error) {
if u.Scheme != "file" {
return "", errors.New("URL scheme is not 'file': " + u.String())
}
path := u.Path
if !isOSWindows() {
return path, nil
}
// If it looks like there's a Windows drive letter at the beginning, strip off the leading slash.
re := regexp.MustCompile("/[A-Za-z]:/")
if re.MatchString(path) {
return path[1:], nil
}
return path, nil
}
// HomeDir returns path of '~'(in Linux) on Windows,
// it returns error when the variable does not exist.
func HomeDir() (home string, err error) {
// TODO: some users run Gitea with mismatched uid and "HOME=xxx" (they set HOME=xxx by environment manually)
// TODO: when running gitea as a sub command inside git, the HOME directory is not the user's home directory
// so at the moment we can not use `user.Current().HomeDir`
if isOSWindows() {
home = os.Getenv("USERPROFILE")
if home == "" {
home = os.Getenv("HOMEDRIVE") + os.Getenv("HOMEPATH")
}
} else {
home = os.Getenv("HOME")
}
if home == "" {
return "", errors.New("cannot get home directory")
}
return home, nil
}
// CommonSkip will check a provided name to see if it represents file or directory that should not be watched
func CommonSkip(name string) bool {
if name == "" {
return true
}
switch name[0] {
case '.':
return true
case 't', 'T':
return name[1:] == "humbs.db"
case 'd', 'D':
return name[1:] == "esktop.ini"
}
return false
}