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