// Copyright 2015 The Gogs 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 git import ( "fmt" "io" "os" "strconv" "strings" "sync" ) // ObjectCache provides thread-safe cache opeations. type ObjectCache struct { lock sync.RWMutex cache map[string]interface{} } func newObjectCache() *ObjectCache { return &ObjectCache{ cache: make(map[string]interface{}, 10), } } // Set add obj to cache func (oc *ObjectCache) Set(id string, obj interface{}) { oc.lock.Lock() defer oc.lock.Unlock() oc.cache[id] = obj } // Get get cached obj by id func (oc *ObjectCache) Get(id string) (interface{}, 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) } // RefEndName return the end name of a ref name func RefEndName(refStr string) string { if strings.HasPrefix(refStr, BranchPrefix) { return refStr[len(BranchPrefix):] } if strings.HasPrefix(refStr, TagPrefix) { return refStr[len(TagPrefix):] } return refStr } // RefURL returns the absolute URL for a ref in a repository func RefURL(repoURL, ref string) string { refName := RefEndName(ref) switch { case strings.HasPrefix(ref, BranchPrefix): return repoURL + "/src/branch/" + refName case strings.HasPrefix(ref, TagPrefix): return repoURL + "/src/tag/" + refName default: return repoURL + "/src/commit/" + refName } } // SplitRefName splits a full refname to reftype and simple refname func SplitRefName(refStr string) (string, string) { if strings.HasPrefix(refStr, BranchPrefix) { return BranchPrefix, refStr[len(BranchPrefix):] } if strings.HasPrefix(refStr, TagPrefix) { return TagPrefix, refStr[len(TagPrefix):] } return "", refStr } // 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 bool, 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 } // Close implements io.Closer func (l *LimitedReaderCloser) Close() error { return l.C.Close() }