github.com/insionng/yougam@v0.0.0-20170714101924-2bc18d833463/libraries/Unknwon/cae/zip/read.go (about)

     1  // Copyright 2013 Unknown
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License"): you may
     4  // not use this file except in compliance with the License. You may obtain
     5  // a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
    11  // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
    12  // License for the specific language governing permissions and limitations
    13  // under the License.
    14  
    15  package zip
    16  
    17  import (
    18  	"archive/zip"
    19  	"os"
    20  	"strings"
    21  )
    22  
    23  // OpenFile is the generalized open call; most users will use Open
    24  // instead. It opens the named zip file with specified flag
    25  // (O_RDONLY etc.) if applicable. If successful,
    26  // methods on the returned ZipArchive can be used for I/O.
    27  // If there is an error, it will be of type *PathError.
    28  func (z *ZipArchive) Open(name string, flag int, perm os.FileMode) error {
    29  	// Create a new archive if it's specified and not exist.
    30  	if flag&os.O_CREATE != 0 {
    31  		f, err := os.Create(name)
    32  		if err != nil {
    33  			return err
    34  		}
    35  		zw := zip.NewWriter(f)
    36  		if err = zw.Close(); err != nil {
    37  			return err
    38  		}
    39  	}
    40  
    41  	rc, err := zip.OpenReader(name)
    42  	if err != nil {
    43  		return err
    44  	}
    45  
    46  	z.ReadCloser = rc
    47  	z.FileName = name
    48  	z.Comment = rc.Comment
    49  	z.NumFiles = len(rc.File)
    50  	z.Flag = flag
    51  	z.Permission = perm
    52  	z.isHasChanged = false
    53  
    54  	z.files = make([]*File, z.NumFiles)
    55  	for i, f := range rc.File {
    56  		z.files[i] = &File{}
    57  		z.files[i].FileHeader, err = zip.FileInfoHeader(f.FileInfo())
    58  		if err != nil {
    59  			return err
    60  		}
    61  		z.files[i].Name = strings.Replace(f.Name, "\\", "/", -1)
    62  		if f.FileInfo().IsDir() && !strings.HasSuffix(z.files[i].Name, "/") {
    63  			z.files[i].Name += "/"
    64  		}
    65  	}
    66  	return nil
    67  }