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Copy pathgres_func.go
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171 lines (157 loc) · 4.53 KB
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// Copyright 2019 gf Author(https://github.com/gogf/gf). All Rights Reserved.
//
// This Source Code Form is subject to the terms of the MIT License.
// If a copy of the MIT was not distributed with this file,
// You can obtain one at https://github.com/gogf/gf.
package gres
import (
"archive/zip"
"bytes"
"encoding/hex"
"fmt"
"github.com/gogf/gf/encoding/gbase64"
"github.com/gogf/gf/encoding/gcompress"
"github.com/gogf/gf/text/gstr"
"github.com/gogf/gf/util/gconv"
"github.com/gogf/gf/os/gfile"
)
const (
gPACKAGE_TEMPLATE = `
package %s
import "github.com/gogf/gf/os/gres"
func init() {
if err := gres.Add("%s"); err != nil {
panic("add binary content to resource manager failed: " + err.Error())
}
}
`
)
// Pack packs the path specified by <srcPaths> into bytes.
// The unnecessary parameter <keyPrefix> indicates the prefix for each file
// packed into the result bytes.
//
// Note that parameter <srcPaths> supports multiple paths join with ','.
func Pack(srcPaths string, keyPrefix ...string) ([]byte, error) {
buffer := bytes.NewBuffer(nil)
headerPrefix := ""
if len(keyPrefix) > 0 && keyPrefix[0] != "" {
headerPrefix = keyPrefix[0]
}
err := zipPathWriter(srcPaths, buffer, headerPrefix)
if err != nil {
return nil, err
}
// Gzip the data bytes to reduce the size.
return gcompress.Gzip(buffer.Bytes(), 9)
}
// PackToFile packs the path specified by <srcPaths> to target file <dstPath>.
// The unnecessary parameter <keyPrefix> indicates the prefix for each file
// packed into the result bytes.
//
// Note that parameter <srcPaths> supports multiple paths join with ','.
func PackToFile(srcPaths, dstPath string, keyPrefix ...string) error {
data, err := Pack(srcPaths, keyPrefix...)
if err != nil {
return err
}
return gfile.PutBytes(dstPath, data)
}
// PackToGoFile packs the path specified by <srcPaths> to target go file <goFilePath>
// with given package name <pkgName>.
//
// The unnecessary parameter <keyPrefix> indicates the prefix for each file
// packed into the result bytes.
//
// Note that parameter <srcPaths> supports multiple paths join with ','.
func PackToGoFile(srcPath, goFilePath, pkgName string, keyPrefix ...string) error {
data, err := Pack(srcPath, keyPrefix...)
if err != nil {
return err
}
return gfile.PutContents(
goFilePath,
fmt.Sprintf(gstr.TrimLeft(gPACKAGE_TEMPLATE), pkgName, gbase64.EncodeToString(data)),
)
}
// Unpack unpacks the content specified by <path> to []*File.
func Unpack(path string) ([]*File, error) {
realPath, err := gfile.Search(path)
if err != nil {
return nil, err
}
return UnpackContent(gfile.GetContents(realPath))
}
// UnpackContent unpacks the content to []*File.
func UnpackContent(content string) ([]*File, error) {
var data []byte
var err error
if isHexStr(content) {
// It here keeps compatible with old version packing string using hex string.
// TODO remove this support in the future.
data, err = gcompress.UnGzip(hexStrToBytes(content))
if err != nil {
return nil, err
}
} else if isBase64(content) {
// New version packing string using base64.
b, err := gbase64.DecodeString(content)
if err != nil {
return nil, err
}
data, err = gcompress.UnGzip(b)
if err != nil {
return nil, err
}
} else {
data, err = gcompress.UnGzip(gconv.UnsafeStrToBytes(content))
if err != nil {
return nil, err
}
}
reader, err := zip.NewReader(bytes.NewReader(data), int64(len(data)))
if err != nil {
return nil, err
}
array := make([]*File, len(reader.File))
for i, file := range reader.File {
array[i] = &File{file: file}
}
return array, nil
}
// isBase64 checks and returns whether given content <s> is base64 string.
// It returns true if <s> is base64 string, or false if not.
func isBase64(s string) bool {
var r bool
for i := 0; i < len(s); i++ {
r = (s[i] >= '0' && s[i] <= '9') ||
(s[i] >= 'a' && s[i] <= 'z') ||
(s[i] >= 'A' && s[i] <= 'Z') ||
(s[i] == '+' || s[i] == '-') ||
(s[i] == '_' || s[i] == '/') || s[i] == '='
if !r {
return false
}
}
return true
}
// isHexStr checks and returns whether given content <s> is hex string.
// It returns true if <s> is hex string, or false if not.
func isHexStr(s string) bool {
var r bool
for i := 0; i < len(s); i++ {
r = (s[i] >= '0' && s[i] <= '9') ||
(s[i] >= 'a' && s[i] <= 'f') ||
(s[i] >= 'A' && s[i] <= 'F')
if !r {
return false
}
}
return true
}
// hexStrToBytes converts hex string content to []byte.
func hexStrToBytes(s string) []byte {
src := gconv.UnsafeStrToBytes(s)
dst := make([]byte, hex.DecodedLen(len(src)))
hex.Decode(dst, src)
return dst
}