forgejo-federation/vendor/github.com/Unknwon/cae/zip/read.go

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2016-11-04 03:46:01 +05:30
// 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 zip
import (
"archive/zip"
"os"
"strings"
)
// OpenFile is the generalized open call; most users will use Open
// instead. It opens the named zip file with specified flag
// (O_RDONLY etc.) if applicable. If successful,
// methods on the returned ZipArchive can be used for I/O.
// If there is an error, it will be of type *PathError.
func (z *ZipArchive) Open(name string, flag int, perm os.FileMode) error {
// Create a new archive if it's specified and not exist.
if flag&os.O_CREATE != 0 {
f, err := os.Create(name)
if err != nil {
return err
}
zw := zip.NewWriter(f)
if err = zw.Close(); err != nil {
return err
}
}
rc, err := zip.OpenReader(name)
if err != nil {
return err
}
z.ReadCloser = rc
z.FileName = name
z.Comment = rc.Comment
z.NumFiles = len(rc.File)
z.Flag = flag
z.Permission = perm
z.isHasChanged = false
z.files = make([]*File, z.NumFiles)
for i, f := range rc.File {
z.files[i] = &File{}
z.files[i].FileHeader, err = zip.FileInfoHeader(f.FileInfo())
if err != nil {
return err
}
z.files[i].Name = strings.Replace(f.Name, "\\", "/", -1)
if f.FileInfo().IsDir() && !strings.HasSuffix(z.files[i].Name, "/") {
z.files[i].Name += "/"
}
}
return nil
}