diff options
Diffstat (limited to 'vendor/github.com/unknwon/cae/cae.go')
-rw-r--r-- | vendor/github.com/unknwon/cae/cae.go | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/vendor/github.com/unknwon/cae/cae.go b/vendor/github.com/unknwon/cae/cae.go new file mode 100644 index 0000000000..60e295a9cb --- /dev/null +++ b/vendor/github.com/unknwon/cae/cae.go @@ -0,0 +1,108 @@ +// Copyright 2013 Unknown +// +// Licensed under the Apache License, Version 2.0 (the "License"): you may +// not use this file except in compliance with the License. You may obtain +// a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT +// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the +// License for the specific language governing permissions and limitations +// under the License. + +// Package cae implements PHP-like Compression and Archive Extensions. +package cae + +import ( + "io" + "os" + "strings" +) + +// A Streamer describes an streamable archive object. +type Streamer interface { + StreamFile(string, os.FileInfo, []byte) error + StreamReader(string, os.FileInfo, io.Reader) error + Close() error +} + +// A HookFunc represents a middleware for packing and extracting archive. +type HookFunc func(string, os.FileInfo) error + +// HasPrefix returns true if name has any string in given slice as prefix. +func HasPrefix(name string, prefixes []string) bool { + for _, prefix := range prefixes { + if strings.HasPrefix(name, prefix) { + return true + } + } + return false +} + +// IsEntry returns true if name equals to any string in given slice. +func IsEntry(name string, entries []string) bool { + for _, e := range entries { + if e == name { + return true + } + } + return false +} + +// IsFilter returns true if given name matches any of global filter rule. +func IsFilter(name string) bool { + if strings.Contains(name, ".DS_Store") { + return true + } + return false +} + +// IsExist returns true if given path is a file or directory. +func IsExist(path string) bool { + _, err := os.Stat(path) + return err == nil || os.IsExist(err) +} + +// Copy copies file from source to target path. +func Copy(dest, src string) error { + // Gather file information to set back later. + si, err := os.Lstat(src) + if err != nil { + return err + } + + // Handle symbolic link. + if si.Mode()&os.ModeSymlink != 0 { + target, err := os.Readlink(src) + if err != nil { + return err + } + // NOTE: os.Chmod and os.Chtimes don't recoganize symbolic link, + // which will lead "no such file or directory" error. + return os.Symlink(target, dest) + } + + sr, err := os.Open(src) + if err != nil { + return err + } + defer sr.Close() + + dw, err := os.Create(dest) + if err != nil { + return err + } + defer dw.Close() + + if _, err = io.Copy(dw, sr); err != nil { + return err + } + + // Set back file information. + if err = os.Chtimes(dest, si.ModTime(), si.ModTime()); err != nil { + return err + } + return os.Chmod(dest, si.Mode()) +} |