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- // Copyright 2015 The Gogs Authors. All rights reserved.
- // SPDX-License-Identifier: MIT
-
- package git
-
- import (
- "fmt"
- "io"
- "os"
- "strconv"
- "strings"
- "sync"
- )
-
- // ObjectCache provides thread-safe cache operations.
- type ObjectCache struct {
- lock sync.RWMutex
- cache map[string]any
- }
-
- func newObjectCache() *ObjectCache {
- return &ObjectCache{
- cache: make(map[string]any, 10),
- }
- }
-
- // Set add obj to cache
- func (oc *ObjectCache) Set(id string, obj any) {
- oc.lock.Lock()
- defer oc.lock.Unlock()
-
- oc.cache[id] = obj
- }
-
- // Get get cached obj by id
- func (oc *ObjectCache) Get(id string) (any, bool) {
- oc.lock.RLock()
- defer oc.lock.RUnlock()
-
- obj, has := oc.cache[id]
- return obj, has
- }
-
- // 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 {
- f, e := os.Stat(dir)
- if e != nil {
- return false
- }
- return f.IsDir()
- }
-
- // 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 {
- f, e := os.Stat(filePath)
- if e != nil {
- return false
- }
- return !f.IsDir()
- }
-
- // isExist checks whether a file or directory exists.
- // It returns false when the file or directory does not exist.
- func isExist(path string) bool {
- _, err := os.Stat(path)
- return err == nil || os.IsExist(err)
- }
-
- // ConcatenateError concatenats an error with stderr string
- func ConcatenateError(err error, stderr string) error {
- if len(stderr) == 0 {
- return err
- }
- return fmt.Errorf("%w - %s", err, stderr)
- }
-
- // ParseBool returns the boolean value represented by the string as per git's git_config_bool
- // true will be returned for the result if the string is empty, but valid will be false.
- // "true", "yes", "on" are all true, true
- // "false", "no", "off" are all false, true
- // 0 is false, true
- // Any other integer is true, true
- // Anything else will return false, false
- func ParseBool(value string) (result, valid bool) {
- // Empty strings are true but invalid
- if len(value) == 0 {
- return true, false
- }
- // These are the git expected true and false values
- if strings.EqualFold(value, "true") || strings.EqualFold(value, "yes") || strings.EqualFold(value, "on") {
- return true, true
- }
- if strings.EqualFold(value, "false") || strings.EqualFold(value, "no") || strings.EqualFold(value, "off") {
- return false, true
- }
- // Try a number
- intValue, err := strconv.ParseInt(value, 10, 32)
- if err != nil {
- return false, false
- }
- return intValue != 0, true
- }
-
- // LimitedReaderCloser is a limited reader closer
- type LimitedReaderCloser struct {
- R io.Reader
- C io.Closer
- N int64
- }
-
- // Read implements io.Reader
- func (l *LimitedReaderCloser) Read(p []byte) (n int, err error) {
- if l.N <= 0 {
- _ = l.C.Close()
- return 0, io.EOF
- }
- if int64(len(p)) > l.N {
- p = p[0:l.N]
- }
- n, err = l.R.Read(p)
- l.N -= int64(n)
- return n, err
- }
-
- // Close implements io.Closer
- func (l *LimitedReaderCloser) Close() error {
- return l.C.Close()
- }
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