基本介绍

gfile文件管理组件提供了更加丰富的文件/目录操作能力。

使用方式：

import "github.com/gogf/gf/v2/os/gfile"

接口文档：

https://pkg.go.dev/github.com/gogf/gf/v2/os/gfile

内容管理

GetContents

• 说明：读取指定路径文件内容，以字符串形式返回。

• 格式: 

  Code Block
  language go
  func GetContents(path string) string

  
  

• 示例：

  Code Block
  language go
  func ExampleGetContents() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_content") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example content") // It reads and returns the file content as string. // It returns empty string if it fails reading, for example, with permission or IO error. fmt.Println(gfile.GetContents(tempFile)) // Output: // goframe example content }

  
  

GetContentsWithCache

• • 说明：带缓存获取文件内容，可设置缓存超时，文件发生变化自动清除缓存。

  • 格式: 

    Code Block
    language go
    func GetContentsWithCache(path string, duration ...time.Duration) string

    
    

  • 示例：

    Code Block
    language go
    func ExampleGetContentsWithCache() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_cache") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example content") // It reads the file content with cache duration of one minute, // which means it reads from cache after then without any IO operations within on minute. fmt.Println(gfile.GetContentsWithCache(tempFile, time.Minute)) // write new contents will clear its cache gfile.PutContents(tempFile, "new goframe example content") // There's some delay for cache clearing after file content change. time.Sleep(time.Second * 1) // read contents fmt.Println(gfile.GetContentsWithCache(tempFile)) // May Output: // goframe example content // new goframe example content }

    
    

GetBytesWithCache

• • 说明：带缓存获取文件内容，可设置缓存超时，文件发生变化自动清除缓存，返回[]byte。

  • 格式: 

    Code Block
    language go
    func GetBytesWithCache(path string, duration ...time.Duration) []byte

    
    

  • 示例：

    Code Block
    language go
    func ExampleGetBytesWithCache() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_cache") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example content") // It reads the file content with cache duration of one minute, // which means it reads from cache after then without any IO operations within on minute. fmt.Println(gfile.GetBytesWithCache(tempFile, time.Minute)) // write new contents will clear its cache gfile.PutContents(tempFile, "new goframe example content") // There's some delay for cache clearing after file content change. time.Sleep(time.Second * 1) // read contents fmt.Println(gfile.GetBytesWithCache(tempFile)) // Output: // [103 111 102 114 97 109 101 32 101 120 97 109 112 108 101 32 99 111 110 116 101 110 116] // [110 101 119 32 103 111 102 114 97 109 101 32 101 120 97 109 112 108 101 32 99 111 110 116 101 110 116] }

    
    

GetBytes

• 说明：读取指定路径文件内容，以字节形式返回。

• 格式: 

  Code Block
  language go
  func GetBytes(path string) []byte

  
  

• 示例：

  Code Block
  language go
  func ExampleGetBytes() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_content") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example content") // It reads and returns the file content as []byte. // It returns nil if it fails reading, for example, with permission or IO error. fmt.Println(gfile.GetBytes(tempFile)) // Output: // [103 111 102 114 97 109 101 32 101 120 97 109 112 108 101 32 99 111 110 116 101 110 116] }

  
  

GetBytesTilChar

• 说明：以某个字符定位截取指定长度的文件内容以字节形式返回

• 格式: 

  Code Block
  language go
  func GetBytesTilChar(reader io.ReaderAt, char byte, start int64) ([]byte, int64)

  
  

• 示例：

  Code Block
  language go
  func ExampleGetBytesTilChar() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_content") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example content") f, _ := gfile.OpenWithFlagPerm(tempFile, os.O_RDONLY, gfile.DefaultPermOpen) // GetBytesTilChar returns the contents of the file as []byte // until the next specified byte `char` position. char, i := gfile.GetBytesTilChar(f, 'f', 0) fmt.Println(char) fmt.Println(i) // Output: // [103 111 102] // 2 }

  
  

GetBytesByTwoOffsets

• 说明：以指定的区间读取文件内容

• 格式: 

  Code Block
  language go
  func GetBytesByTwoOffsets(reader io.ReaderAt, start int64, end int64) []byte

  
  

• 示例：

  Code Block
  language go
  func ExampleGetBytesByTwoOffsets() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_content") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example content") f, _ := gfile.OpenWithFlagPerm(tempFile, os.O_RDONLY, gfile.DefaultPermOpen) // GetBytesTilChar returns the contents of the file as []byte // until the next specified byte `char` position. char := gfile.GetBytesByTwoOffsets(f, 0, 3) fmt.Println(char) // Output: // [103 111 102] }

  
  

PutContents

• 说明：往指定路径文件添加字符串内容。如果文件不存在将会递归的形式自动创建。

• 格式: 

  Code Block
  language go
  func putContents(path string, data []byte, flag int, perm os.FileMode) error

  
  

• 示例：

  Code Block
  language go
  func ExamplePutContents() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_content") tempFile = gfile.Join(tempDir, fileName) ) // It creates and puts content string into specifies file path. // It automatically creates directory recursively if it does not exist. gfile.PutContents(tempFile, "goframe example content") // read contents fmt.Println(gfile.GetContents(tempFile)) // Output: // goframe example content }

  
  

PutBytes

• 说明：以字节形式写入指定文件，如果文件不存在将会递归的形式自动创建

• 格式: 

  Code Block
  language go
  func PutBytes(path string, content []byte) error

  
  

• 示例：

  Code Block
  language go
  func ExamplePutBytes() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_content") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutBytes(tempFile, []byte("goframe example content")) // read contents fmt.Println(gfile.GetContents(tempFile)) // Output: // goframe example content }

  
  

PutContentsAppend

• 说明：追加字符串内容到指定文件，如果文件不存在将会递归的形式自动创建。

• 格式: 

  Code Block
  language go
  func PutContentsAppend(path string, content string) error

  
  

• 示例：

  Code Block
  language go
  func ExamplePutContentsAppend() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_content") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example content") // read contents fmt.Println(gfile.GetContents(tempFile)) // It creates and append content string into specifies file path. // It automatically creates directory recursively if it does not exist. gfile.PutContentsAppend(tempFile, " append content") // read contents fmt.Println(gfile.GetContents(tempFile)) // Output: // goframe example content // goframe example content append content }

  
  

PutBytesAppend

• 说明：追加字节内容到指定文件。如果文件不存在将会递归的形式自动创建。

• 格式: 

  Code Block
  language go
  func PutBytesAppend(path string, content []byte) error

  
  

• 示例：

  Code Block
  language go
  func ExamplePutBytesAppend() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_content") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example content") // read contents fmt.Println(gfile.GetContents(tempFile)) // write contents gfile.PutBytesAppend(tempFile, []byte(" append")) // read contents fmt.Println(gfile.GetContents(tempFile)) // Output: // goframe example content // goframe example content append }

  
  

GetNextCharOffset

• 说明：从某个偏移量开始，获取文件中指定字符所在下标

• 格式: 

  Code Block
  language go
  func GetNextCharOffset(reader io.ReaderAt, char byte, start int64) int64

  
  

• 示例：

  Code Block
  language go
  func ExampleGetNextCharOffset() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_content") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example content") f, err := gfile.OpenWithFlagPerm(tempFile, os.O_RDONLY, DefaultPermOpen) defer f.Close() // read contents index := gfile.GetNextCharOffset(f, 'f', 0) fmt.Println(index) // Output: // 2 }

  
  

GetNextCharOffsetByPath

• 说明：从某个偏移量开始，获取文件中指定字符所在下标

• 格式: 

  Code Block
  language go
  func GetNextCharOffsetByPath(path string, char byte, start int64) int64

  
  

• 示例：

  Code Block
  language go
  func ExampleGetNextCharOffsetByPath() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_content") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example content") // read contents index := gfile.GetNextCharOffsetByPath(tempFile, 'f', 0) fmt.Println(index) // Output: // 2 }

  
  

GetBytesTilCharByPath

• 说明：以某个字符定位截取指定长度的文件内容以字节形式返回

• 格式: 

  Code Block
  language go
  func GetBytesTilCharByPath(path string, char byte, start int64) ([]byte, int64)

  
  

• 示例：

  Code Block
  language go
  func ExampleGetBytesTilCharByPath() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_content") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example content") // read contents fmt.Println(gfile.GetBytesTilCharByPath(tempFile, 'f', 0)) // Output: // [103 111 102] 2 }

  
  

GetBytesByTwoOffsetsByPath

• 说明：用两个偏移量截取指定文件的内容以字节形式返回

• 格式: 

  Code Block
  language go
  func GetBytesByTwoOffsetsByPath(path string, start int64, end int64) []byte

  
  

• 示例：

  Code Block
  language go
  func ExampleGetBytesByTwoOffsetsByPath() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_content") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example content") // read contents fmt.Println(gfile.GetBytesByTwoOffsetsByPath(tempFile, 0, 7)) // Output: // [103 111 102 114 97 109 101] }

  
  

ReadLines

• 说明：以字符串形式逐行读取文件内容

• 格式: 

  Code Block
  language go
  func ReadLines(file string, callback func(text string) error) error

  
  

• 示例：

  Code Block
  language go
  func ExampleReadLines() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_content") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "L1 goframe example content\nL2 goframe example content") // read contents gfile.ReadLines(tempFile, func(text string) error { // Process each line fmt.Println(text) return nil }) // Output: // L1 goframe example content // L2 goframe example content }

  
  

ReadLinesBytes

• 说明：以字节形式逐行读取文件内容

• 格式: 

  Code Block
  language go
  func ReadLinesBytes(file string, callback func(bytes []byte) error) error

  
  

• 示例：

  Code Block
  language go
  func ExampleReadLinesBytes() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_content") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "L1 goframe example content\nL2 goframe example content") // read contents gfile.ReadLinesBytes(tempFile, func(bytes []byte) error { // Process each line fmt.Println(bytes) return nil }) // Output: // [76 49 32 103 111 102 114 97 109 101 32 101 120 97 109 112 108 101 32 99 111 110 116 101 110 116] // [76 50 32 103 111 102 114 97 109 101 32 101 120 97 109 112 108 101 32 99 111 110 116 101 110 116] }

  
  

Truncate

• 说明：裁剪文件为指定大小
• 注意：如果给定文件路径是软链，将会修改源文件

• 格式: 

  Code Block
  language go
  func Truncate(path string, size int) error

  
  

• 示例：

  Code Block
  language go
  func ExampleTruncate(){ // init var ( path = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") ) // Check whether the `path` size stat, _ := gfile.Stat(path) fmt.Println(stat.Size()) // Truncate file gfile.Truncate(path, 0) // Check whether the `path` size stat, _ = gfile.Stat(path) fmt.Println(stat.Size()) // Output: // 13 // 0 }

  
  

内容替换

ReplaceFile

• 说明：替换指定文件的指定内容为新内容

• 格式: 

  Code Block
  language go
  func ReplaceFile(search, replace, path string) error

  
  

• 示例：

  Code Block
  language go
  func ExampleReplaceFile() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_replace") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example content") // read contents fmt.Println(gfile.GetContents(tempFile)) // It replaces content directly by file path. gfile.ReplaceFile("content", "replace word", tempFile) fmt.Println(gfile.GetContents(tempFile)) // Output: // goframe example content // goframe example replace word }

  
  

ReplaceFileFunc

• 说明：使用自定义函数替换指定文件内容

• 格式: 

  Code Block
  language go
  func ReplaceFileFunc(f func(path, content string) string, path string) error

  
  

• 示例：

  Code Block
  language go
  func ExampleReplaceFileFunc() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_replace") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example 123") // read contents fmt.Println(gfile.GetContents(tempFile)) // It replaces content directly by file path and callback function. gfile.ReplaceFileFunc(func(path, content string) string { // Replace with regular match reg, _ := regexp.Compile(`\d{3}`) return reg.ReplaceAllString(content, "[num]") }, tempFile) fmt.Println(gfile.GetContents(tempFile)) // Output: // goframe example 123 // goframe example [num] }

  
  

ReplaceDir

• 说明：扫描指定目录，替换符合条件的文件的指定内容为新内容

• 格式: 

  Code Block
  language go
  func ReplaceDir(search, replace, path, pattern string, recursive ...bool) error

  
  

• 示例：

  Code Block
  language go
  func ExampleReplaceDir() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_replace") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example content") // read contents fmt.Println(gfile.GetContents(tempFile)) // It replaces content of all files under specified directory recursively. gfile.ReplaceDir("content", "replace word", tempDir, "gflie_example.txt", true) // read contents fmt.Println(gfile.GetContents(tempFile)) // Output: // goframe example content // goframe example replace word }

  
  

ReplaceDirFunc

• 说明：扫描指定目录，使用自定义函数替换符合条件的文件的指定内容为新内容

• 格式: 

  Code Block
  language go
  func ReplaceDirFunc(f func(path, content string) string, path, pattern string, recursive ...bool) error

  
  

• 示例：

  Code Block
  language go
  func ExampleReplaceDirFunc() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_replace") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example 123") // read contents fmt.Println(gfile.GetContents(tempFile)) // It replaces content of all files under specified directory with custom callback function recursively. gfile.ReplaceDirFunc(func(path, content string) string { // Replace with regular match reg, _ := regexp.Compile(`\d{3}`) return reg.ReplaceAllString(content, "[num]") }, tempDir, "gflie_example.txt", true) fmt.Println(gfile.GetContents(tempFile)) // Output: // goframe example 123 // goframe example [num] }

  
  

文件时间

MTime

• 说明：获取路径修改时间

• 格式: 

  Code Block
  language go
  func MTime(path string) time.Time

  
  

• 示例：

  Code Block
  language go
  func ExampleMTime() { t := gfile.MTime(gfile.TempDir()) fmt.Println(t) // May Output: // 2021-11-02 15:18:43.901141 +0800 CST }

  
  

MTimestamp

• 说明：获取路径修改时间戳（秒）

• 格式: 

  Code Block
  language go
  func MTimestamp(path string) int64

  
  

• 示例：

  Code Block
  language go
  func ExampleMTimestamp() { t := gfile.MTimestamp(gfile.TempDir()) fmt.Println(t) // May Output: // 1635838398 }

  
  

MTimestampMilli

• 说明：获取路径修改时间戳（毫秒）

• 格式: 

  Code Block
  language go
  func MTimestampMilli(path string) int64

  
  

• 示例：

  Code Block
  language go
  func ExampleMTimestampMilli() { t := gfile.MTimestampMilli(gfile.TempDir()) fmt.Println(t) // May Output: // 1635838529330 }

  
  

文件大小

Size

• 说明：获取路径大小，不进行格式化

• 格式: 

  Code Block
  language go
  func Size(path string) int64

  
  

• 示例：

  Code Block
  language go
  func ExampleSize() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_size") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "0123456789") fmt.Println(gfile.Size(tempFile)) // Output: // 10 }

  
  

SizeFormat

• 说明：获取路径大小，并格式化成硬盘容量

• 格式: 

  Code Block
  language go
  func SizeFormat(path string) string

  
  

• 示例：

  Code Block
  language go
  func ExampleSizeFormat() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_size") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "0123456789") fmt.Println(gfile.SizeFormat(tempFile)) // Output: // 10.00B }

  
  

ReadableSize

• 说明：获取给定路径容量大小，并格式化人类易读的硬盘容量格式

• 格式: 

  Code Block
  language go
  func ReadableSize(path string) string

  
  

• 示例：

  Code Block
  language go
  func ExampleReadableSize() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_size") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "01234567899876543210") fmt.Println(gfile.ReadableSize(tempFile)) // Output: // 20.00B }

  
  

StrToSize

• 说明：硬盘容量大小字符串转换为大小整形

• 格式: 

  Code Block
  language go
  func StrToSize(sizeStr string) int64

  
  

• 示例：

  Code Block
  language go
  func ExampleStrToSize() { size := gfile.StrToSize("100MB") fmt.Println(size) // Output: // 104857600 }

  
  

FormatSize

• 说明：大小整形转换为硬盘容量大小字符串`K、m、g、t、p、e、b`

• 格式: 

  Code Block
  language go
  func FormatSize(raw int64) string

  
  

• 示例：

  Code Block
  language go
  func ExampleFormatSize() { sizeStr := gfile.FormatSize(104857600) fmt.Println(sizeStr) sizeStr0 := gfile.FormatSize(1024) fmt.Println(sizeStr0) sizeStr1 := gfile.FormatSize(999999999999999999) fmt.Println(sizeStr1) // Output: // 100.00M // 1.00K // 888.18P }

  
  

文件排序

SortFiles

• 说明：排序多个路径，按首字母进行排序，数字优先。

• 格式: 

  Code Block
  language go
  func SortFiles(files []string) []string

  
  

• 示例：

  Code Block
  language go
  func ExampleSortFiles() { files := []string{ "/aaa/bbb/ccc.txt", "/aaa/bbb/", "/aaa/", "/aaa", "/aaa/ccc/ddd.txt", "/bbb", "/0123", "/ddd", "/ccc", } sortOut := gfile.SortFiles(files) fmt.Println(sortOut) // Output: // [/0123 /aaa /aaa/ /aaa/bbb/ /aaa/bbb/ccc.txt /aaa/ccc/ddd.txt /bbb /ccc /ddd] }

  
  

文件检索

Search

• 说明：在指定目录（默认包含当前目录、运行目录、主函数目录；不会递归子目录）中搜索文件并返回真实路径。

• 格式: 

  Code Block
  language go
  func Search(name string, prioritySearchPaths ...string) (realPath string, err error)

  
  

• 示例：

  Code Block
  language go
  func ExampleSearch() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_search") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example content") // search file realPath, _ := gfile.Search(fileName, tempDir) fmt.Println(gfile.Basename(realPath)) // Output: // gflie_example.txt }

  
  

目录扫描

ScanDir

• 说明：扫描指定目录，可扫描文件或目录，支持递归扫描。

• 格式: 

  Code Block
  language go
  func ScanDir(path string, pattern string, recursive ...bool) ([]string, error)

  
  

• 示例：

  Code Block
  language go
  func ExampleScanDir() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_scan_dir") tempFile = gfile.Join(tempDir, fileName) tempSubDir = gfile.Join(tempDir, "sub_dir") tempSubFile = gfile.Join(tempSubDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example content") gfile.PutContents(tempSubFile, "goframe example content") // scans directory recursively list, _ := gfile.ScanDir(tempDir, "*", true) for _, v := range list { fmt.Println(gfile.Basename(v)) } // Output: // gflie_example.txt // sub_dir // gflie_example.txt }

  
  

ScanDirFile

• 说明：扫描指定目录的文件，支持递归扫描

• 格式: 

  Code Block
  language go
  func ScanDirFile(path string, pattern string, recursive ...bool) ([]string, error)

  
  

• 示例：

  Code Block
  language go
  func ExampleScanDirFile() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_scan_dir_file") tempFile = gfile.Join(tempDir, fileName) tempSubDir = gfile.Join(tempDir, "sub_dir") tempSubFile = gfile.Join(tempSubDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example content") gfile.PutContents(tempSubFile, "goframe example content") // scans directory recursively exclusive of directories list, _ := gfile.ScanDirFile(tempDir, "*.txt", true) for _, v := range list { fmt.Println(gfile.Basename(v)) } // Output: // gflie_example.txt // gflie_example.txt }

  
  

ScanDirFunc

• 说明：扫描指定目录（自定义过滤方法），可扫描文件或目录，支持递归扫描

• 格式: 

  Code Block
  language go
  func ScanDirFunc(path string, pattern string, recursive bool, handler func(path string) string) ([]string, error)

  
  

• 示例：

  Code Block
  language go
  func ExampleScanDirFunc() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_scan_dir_func") tempFile = gfile.Join(tempDir, fileName) tempSubDir = gfile.Join(tempDir, "sub_dir") tempSubFile = gfile.Join(tempSubDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example content") gfile.PutContents(tempSubFile, "goframe example content") // scans directory recursively list, _ := gfile.ScanDirFunc(tempDir, "*", true, func(path string) string { // ignores some files if gfile.Basename(path) == "gflie_example.txt" { return "" } return path }) for _, v := range list { fmt.Println(gfile.Basename(v)) } // Output: // sub_dir }

  
  

ScanDirFileFunc

• 说明：扫描指定目录的文件（自定义过滤方法），支持递归扫描。

• 格式: 

  Code Block
  language go
  func ScanDirFileFunc(path string, pattern string, recursive bool, handler func(path string) string) ([]string, error)

  
  

• 示例：

  Code Block
  language go
  func ExampleScanDirFileFunc() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_scan_dir_file_func") tempFile = gfile.Join(tempDir, fileName) fileName1 = "gflie_example_ignores.txt" tempFile1 = gfile.Join(tempDir, fileName1) tempSubDir = gfile.Join(tempDir, "sub_dir") tempSubFile = gfile.Join(tempSubDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example content") gfile.PutContents(tempFile1, "goframe example content") gfile.PutContents(tempSubFile, "goframe example content") // scans directory recursively exclusive of directories list, _ := gfile.ScanDirFileFunc(tempDir, "*.txt", true, func(path string) string { // ignores some files if gfile.Basename(path) == "gflie_example_ignores.txt" { return "" } return path }) for _, v := range list { fmt.Println(gfile.Basename(v)) } // Output: // gflie_example.txt // gflie_example.txt }

  
  

常用目录

Pwd

• 说明：获取当前工作路径。

• 格式: 

  Code Block
  language go
  func Pwd() string

  
  

• 示例：

  Code Block
  language go
  func ExamplePwd() { // Get absolute path of current working directory. fmt.Println(gfile.Pwd()) // May Output: // xxx/gf/os/gfile }

  
  

Home

• 说明：获取运行用户的主目录

• 格式: 

  Code Block
  language go
  func Home(names ...string) (string, error)

  
  

• 示例：

  Code Block
  language go
  func ExampleHome() { // user's home directory homePath, _ := gfile.Home() fmt.Println(homePath) // May Output: // C:\Users\hailaz }

  
  

TempDir

• 说明：获取拼接系统临时路径后的绝对地址。

• 格式: 

  Code Block
  language go
  func TempDir(names ...string) string

  
  

• 示例：

  Code Block
  language go
  func ExampleTempDir() { // init var ( fileName = "gfile_example_basic_dir" ) // fetch an absolute representation of path. path := gfile.TempDir(fileName) fmt.Println(path) // Output: // /tmp/gfile_example_basic_dir }

  
  

SelfPath

• 说明：获取当前运行程序的绝对路径。

• 格式: 

  Code Block
  language go
  func SelfPath() string

  
  

• 示例：

  Code Block
  language go
  func ExampleSelfPath() { // Get absolute file path of current running process fmt.Println(gfile.SelfPath()) // May Output: // xxx/___github_com_gogf_gf_v2_os_gfile__ExampleSelfPath }

  
  

类型判断

IsDir

• 说明：检查给定的路径是否是文件夹。

• 格式: 

  Code Block
  language go
  func IsDir(path string) bool

  
  

• 示例：

  Code Block
  language go
  func ExampleIsDir() { // init var ( path = gfile.TempDir("gfile_example_basic_dir") filePath = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") ) // Checks whether given `path` a directory. fmt.Println(gfile.IsDir(path)) fmt.Println(gfile.IsDir(filePath)) // Output: // true // false }

  
  

IsFile

• 说明：检查给定的路径是否是文件。

• 格式: 

  Code Block
  language go
  func IsFile(path string) bool

  
  

• 示例：

  Code Block
  language go
  func ExampleIsFile() { // init var ( filePath = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") dirPath = gfile.TempDir("gfile_example_basic_dir") ) // Checks whether given `path` a file, which means it's not a directory. fmt.Println(gfile.IsFile(filePath)) fmt.Println(gfile.IsFile(dirPath)) // Output: // true // false }

  
  

权限操作

IsReadable

• 说明：检查给定的路径是否可读。

• 格式: 

  Code Block
  language go
  func IsReadable(path string) bool

  
  

• 示例：

  Code Block
  language go
  func ExampleIsReadable() { // init var ( path = gfile.Pwd() + gfile.Separator + "testdata/readline/file.log" ) // Checks whether given `path` is readable. fmt.Println(gfile.IsReadable(path)) // Output: // true }

  
  

IsWritable

• 说明：检查指定路径是否可写，如果路径是目录，则会创建临时文件检查是否可写，如果是文件则判断是否可以打开

• 格式: 

  Code Block
  language go
  func IsWritable(path string) bool

  
  

• 示例：

  Code Block
  language go
  func ExampleIsWritable() { // init var ( path = gfile.Pwd() + gfile.Separator + "testdata/readline/file.log" ) // Checks whether given `path` is writable. fmt.Println(gfile.IsWritable(path)) // Output: // true }

  
  

Chmod

• 说明：使用指定的权限，更改指定路径的文件权限。

• 格式: 

  Code Block
  language go
  func Chmod(path string, mode os.FileMode) error

  
  

• 示例：

  Code Block
  language go
  func ExampleChmod() { // init var ( path = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") ) // Get a FileInfo describing the named file. stat, err := gfile.Stat(path) if err != nil { fmt.Println(err.Error()) } // Show original mode fmt.Println(stat.Mode()) // Change file model gfile.Chmod(path, gfile.DefaultPermCopy) // Get a FileInfo describing the named file. stat, _ = gfile.Stat(path) // Show the modified mode fmt.Println(stat.Mode()) // Output: // -rw-r--r-- // -rwxrwxrwx }

  
  

文件/目录操作

Mkdir

• 说明：创建文件夹，支持递归创建（建议采用绝对路径）,创建后的文件夹权限为：drwxr-xr-x。

• 格式: 

  Code Block
  language go
  func Mkdir(path string) error

  
  

• 示例：

  Code Block
  language go
  func ExampleMkdir() { // init var ( path = gfile.TempDir("gfile_example_basic_dir") ) // Creates directory gfile.Mkdir(path) // Check if directory exists fmt.Println(gfile.IsDir(path)) // Output: // true }

  
  

Create

• 说明：创建文件/文件夹,如果传入的路径中的文件夹不存在，则会自动创建文件夹以及文件，其中创建的文件权限为-rw-r–r–。
• 注意：如果需要创建文件的已存在，则会清空该文件的内容！

• 格式: 

  Code Block
  language go
  func Create(path string) (*os.File, error)

  
  

• 示例：

  Code Block
  language go
  func ExampleCreate() { // init var ( path = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") dataByte = make([]byte, 50) ) // Check whether the file exists isFile := gfile.IsFile(path) fmt.Println(isFile) // Creates file with given `path` recursively fileHandle, _ := gfile.Create(path) defer fileHandle.Close() // Write some content to file n, _ := fileHandle.WriteString("hello goframe") // Check whether the file exists isFile = gfile.IsFile(path) fmt.Println(isFile) // Reset file uintptr unix.Seek(int(fileHandle.Fd()), 0, 0) // Reads len(b) bytes from the File fileHandle.Read(dataByte) fmt.Println(string(dataByte[:n])) // Output: // false // true // hello goframe }

  
  

Open

• 说明：以只读的方式打开文件/文件夹。

• 格式: 

  Code Block
  language go
  func Open(path string) (*os.File, error)

  
  

• 示例：

  Code Block
  language go
  func ExampleOpen() { // init var ( path = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") dataByte = make([]byte, 4096) ) // Open file or directory with READONLY model file, _ := gfile.Open(path) defer file.Close() // Read data n, _ := file.Read(dataByte) fmt.Println(string(dataByte[:n])) // Output: // hello goframe }

  
  

OpenFile

• 说明：以指定`flag`以及`perm`的方式打开文件/文件夹。

• 格式: 

  Code Block
  language go
  func OpenFile(path string, flag int, perm os.FileMode) (*os.File, error)

  
  

• 示例：

  Code Block
  language go
  func ExampleOpenFile() { // init var ( path = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") dataByte = make([]byte, 4096) ) // Opens file/directory with custom `flag` and `perm` // Create if file does not exist,it is created in a readable and writable mode,prem 0777 openFile, _ := gfile.OpenFile(path, os.O_CREATE|os.O_RDWR, gfile.DefaultPermCopy) defer openFile.Close() // Write some content to file writeLength, _ := openFile.WriteString("hello goframe test open file") fmt.Println(writeLength) // Read data unix.Seek(int(openFile.Fd()), 0, 0) n, _ := openFile.Read(dataByte) fmt.Println(string(dataByte[:n])) // Output: // 28 // hello goframe test open file }

  
  

OpenWithFalg

• 说明：以指定`flag`的方式打开文件/文件夹。

• 格式: 

  Code Block
  language go
  func OpenWithFlag(path string, flag int) (*os.File, error)

  
  

• 示例：

  Code Block
  language go
  func ExampleOpenWithFlag() { // init var ( path = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") dataByte = make([]byte, 4096) ) // Opens file/directory with custom `flag` // Create if file does not exist,it is created in a readable and writable mode with default `perm` is 0666 openFile, _ := gfile.OpenWithFlag(path, os.O_CREATE|os.O_RDWR) defer openFile.Close() // Write some content to file writeLength, _ := openFile.WriteString("hello goframe test open file with flag") fmt.Println(writeLength) // Read data unix.Seek(int(openFile.Fd()), 0, 0) n, _ := openFile.Read(dataByte) fmt.Println(string(dataByte[:n])) // Output: // 38 // hello goframe test open file with flag }

  
  

OpenWithFalgPerm

• 说明：以指定`flag`以及`perm`的方式打开文件/文件夹。

• 格式: 

  Code Block
  language go
  func OpenWithFlagPerm(path string, flag int, perm os.FileMode) (*os.File, error)

  
  

• 示例：

  Code Block
  language go
  func ExampleOpenWithFlagPerm() { // init var ( path = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") dataByte = make([]byte, 4096) ) // Opens file/directory with custom `flag` and `perm` // Create if file does not exist,it is created in a readable and writable mode with `perm` is 0777 openFile, _ := gfile.OpenWithFlagPerm(path, os.O_CREATE|os.O_RDWR, gfile.DefaultPermCopy) defer openFile.Close() // Write some content to file writeLength, _ := openFile.WriteString("hello goframe test open file with flag and perm") fmt.Println(writeLength) // Read data unix.Seek(int(openFile.Fd()), 0, 0) n, _ := openFile.Read(dataByte) fmt.Println(string(dataByte[:n])) // Output: // 38 // hello goframe test open file with flag }

  
  

Stat

• 说明：获取给定路径的文件详情。

• 格式: 

  Code Block
  language go
  func Stat(path string) (os.FileInfo, error)

  
  

• 示例：

  Code Block
  language go
  func ExampleStat() { // init var ( path = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") ) // Get a FileInfo describing the named file. stat, _ := gfile.Stat(path) fmt.Println(stat.Name()) fmt.Println(stat.IsDir()) fmt.Println(stat.Mode()) fmt.Println(stat.ModTime()) fmt.Println(stat.Size()) fmt.Println(stat.Sys()) // May Output: // file1 // false // -rwxr-xr-x // 2021-12-02 11:01:27.261441694 +0800 CST // &{16777220 33261 1 8597857090 501 20 0 [0 0 0 0] {1638414088 192363490} {1638414087 261441694} {1638414087 261441694} {1638413480 485068275} 38 8 4096 0 0 0 [0 0]} }

  
  

Copy

• 说明：支持复制文件或目录

• 格式: 

  Code Block
  language go
  func Copy(src string, dst string) error

  
  

• 示例：

  Code Block
  language go
  func ExampleCopy() { // init var ( srcFileName = "gflie_example.txt" srcTempDir = gfile.TempDir("gfile_example_copy_src") srcTempFile = gfile.Join(srcTempDir, srcFileName) // copy file dstFileName = "gflie_example_copy.txt" dstTempFile = gfile.Join(srcTempDir, dstFileName) // copy dir dstTempDir = gfile.TempDir("gfile_example_copy_dst") ) // write contents gfile.PutContents(srcTempFile, "goframe example copy") // copy file gfile.Copy(srcTempFile, dstTempFile) // read contents after copy file fmt.Println(gfile.GetContents(dstTempFile)) // copy dir gfile.Copy(srcTempDir, dstTempDir) // list copy dir file fList, _ := gfile.ScanDir(dstTempDir, "*", false) for _, v := range fList { fmt.Println(gfile.Basename(v)) } // Output: // goframe example copy // gflie_example.txt // gflie_example_copy.txt }

  
  

CopyFile

• 说明：复制文件

• 格式: 

  Code Block
  language go
  func CopyFile(src, dst string) (err error)

  
  

• 示例：

  Code Block
  language go
  func ExampleCopyFile() { // init var ( srcFileName = "gflie_example.txt" srcTempDir = gfile.TempDir("gfile_example_copy_src") srcTempFile = gfile.Join(srcTempDir, srcFileName) // copy file dstFileName = "gflie_example_copy.txt" dstTempFile = gfile.Join(srcTempDir, dstFileName) ) // write contents gfile.PutContents(srcTempFile, "goframe example copy") // copy file gfile.CopyFile(srcTempFile, dstTempFile) // read contents after copy file fmt.Println(gfile.GetContents(dstTempFile)) // Output: // goframe example copy }

  
  

CopyDir

• 说明：支持复制文件或目录

• 格式: 

  Code Block
  language go
  func CopyDir(src string, dst string) error

  
  

• 示例：

  Code Block
  language go
  func ExampleCopyDir() { // init var ( srcTempDir = gfile.TempDir("gfile_example_copy_src") // copy file dstFileName = "gflie_example_copy.txt" dstTempFile = gfile.Join(srcTempDir, dstFileName) // copy dir dstTempDir = gfile.TempDir("gfile_example_copy_dst") ) // read contents after copy file fmt.Println(gfile.GetContents(dstTempFile)) // copy dir gfile.CopyDir(srcTempDir, dstTempDir) // list copy dir file fList, _ := gfile.ScanDir(dstTempDir, "*", false) for _, v := range fList { fmt.Println(gfile.Basename(v)) } // Output: // gflie_example.txt // gflie_example_copy.txt }

  
  

Move

• 说明：将src重命名为dst。

• 注意：如果dst已经存在并且是文件，将会被替换造成数据丢失！

• 格式: 

  Code Block
  language go
  func Move(src string, dst string) error

  
  

• 示例：

  Code Block
  language go
  func ExampleMove() { // init var ( srcPath = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") dstPath = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file2") ) // Check is file fmt.Println(gfile.IsFile(dstPath)) // Moves `src` to `dst` path. // If `dst` already exists and is not a directory, it'll be replaced. gfile.Move(srcPath, dstPath) fmt.Println(gfile.IsFile(srcPath)) fmt.Println(gfile.IsFile(dstPath)) // Output: // false // false // true }

  
  

Rename

• 说明：Move的别名，将src重命名为dst。

• 注意：如果dst已经存在并且是文件，将会被替换造成数据丢失！

• 格式: 

  Code Block
  language go
  func Rename(src string, dst string) error

  
  

• 示例：

  Code Block
  language go
  func ExampleRename() { // init var ( srcPath = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file2") dstPath = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") ) // Check is file fmt.Println(gfile.IsFile(dstPath)) // renames (moves) `src` to `dst` path. // If `dst` already exists and is not a directory, it'll be replaced. gfile.Rename(srcPath, dstPath) fmt.Println(gfile.IsFile(srcPath)) fmt.Println(gfile.IsFile(dstPath)) // Output: // false // false // true }

  
  

Remove

• 说明：删除给定路径的文件或文件夹。

• 格式: 

  Code Block
  language go
  func Remove(path string) error

  
  

• 示例：

  Code Block
  language go
  func ExampleRemove() { // init var ( path = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") ) // Checks whether given `path` a file, which means it's not a directory. fmt.Println(gfile.IsFile(path)) // deletes all file/directory with `path` parameter. gfile.Remove(path) // Check again fmt.Println(gfile.IsFile(path)) // Output: // true // false }

  
  

IsEmpty

• 说明：检查给定的路径，如果是文件夹则检查是否包含文件，如果是文件则检查文件大小是否为空。

• 格式: 

  Code Block
  language go
  func IsEmpty(path string) bool

  
  

• 示例：

  Code Block
  language go
  func ExampleIsEmpty() { // init var ( path = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") ) // Check whether the `path` is empty fmt.Println(gfile.IsEmpty(path)) // Truncate file gfile.Truncate(path, 0) // Check whether the `path` is empty fmt.Println(gfile.IsEmpty(path)) // Output: // false // true }

  
  

DirNames

• 说明：获取给定路径下的文件列表，返回的是一个切片。

• 格式: 

  Code Block
  language go
  func DirNames(path string) ([]string, error)

  
  

• 示例：

  Code Block
  language go
  func ExampleDirNames() { // init var ( path = gfile.TempDir("gfile_example_basic_dir") ) // Get sub-file names of given directory `path`. dirNames, _ := gfile.DirNames(path) fmt.Println(dirNames) // May Output: // [file1] }

  
  

Glob

• 说明：模糊搜索给定路径下的文件列表，支持正则，第二个参数控制返回的结果是否带上绝对路径。

• 格式: 

  Code Block
  language go
  func Glob(pattern string, onlyNames ...bool) ([]string, error)

  
  

• 示例：

  Code Block
  language go
  func ExampleGlob() { // init var ( path = gfile.Pwd() + gfile.Separator + "*_example_basic_test.go" ) // Get sub-file names of given directory `path`. // Only show file name matchNames, _ := gfile.Glob(path, true) fmt.Println(matchNames) // Show full path of the file matchNames, _ = gfile.Glob(path, false) fmt.Println(matchNames) // May Output: // [gfile_z_example_basic_test.go] // [xxx/gf/os/gfile/gfile_z_example_basic_test.go] }

  
  

Exists

• 说明：检查给定的路径是否存在 。

• 格式: 

  Code Block
  language go
  func Exists(path string) bool

  
  

• 示例：

  Code Block
  language go
  func ExampleExists() { // init var ( path = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") ) // Checks whether given `path` exist. fmt.Println(gfile.Exists(path)) // Output: // true }

  
  

Chdir

• 说明：使用给定的路径，更改当前的工作路径。

• 格式: 

  Code Block
  language go
  func Chdir(dir string) error

  
  

• 示例：

  Code Block
  language go
  func ExampleChdir() { // init var ( path = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") ) // Get current working directory fmt.Println(gfile.Pwd()) // Changes the current working directory to the named directory. gfile.Chdir(path) // Get current working directory fmt.Println(gfile.Pwd()) // May Output: // xxx/gf/os/gfile // /tmp/gfile_example_basic_dir/file1 }

  
  

路径操作

Join

• 说明：将多个字符串路径通过`/`进行连接。

• 格式: 

  Code Block
  language go
  func Join(paths ...string) string

  
  

• 示例：

  Code Block
  language go
  func ExampleJoin() { // init var ( dirPath = gfile.TempDir("gfile_example_basic_dir") filePath = "file1" ) // Joins string array paths with file separator of current system. joinString := gfile.Join(dirPath, filePath) fmt.Println(joinString) // Output: // /tmp/gfile_example_basic_dir/file1 }

  
  

Abs

• 说明：返回路径的绝对路径。

• 格式: 

  Code Block
  language go
  func Abs(path string) string

  
  

• 示例：

  Code Block
  language go
  func ExampleAbs() { // init var ( path = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") ) // Get an absolute representation of path. fmt.Println(gfile.Abs(path)) // Output: // /tmp/gfile_example_basic_dir/file1 }

  
  

RealPath

• 说明：获取给定路径的绝对路径地址。

• 注意：如果文件不存在则返回空。

• 格式: 

  Code Block
  language go
  func RealPath(path string) string

  
  

• 示例：

  Code Block
  language go
  func ExampleRealPath() { // init var ( realPath = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") worryPath = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "worryFile") ) // fetch an absolute representation of path. fmt.Println(gfile.RealPath(realPath)) fmt.Println(gfile.RealPath(worryPath)) // Output: // /tmp/gfile_example_basic_dir/file1 // }

  
  

SelfName

• 说明：获取当前运行程序的名称。

• 格式: 

  Code Block
  language go
  func SelfName() string

  
  

• 示例：

  Code Block
  language go
  func ExampleSelfName() { // Get file name of current running process fmt.Println(gfile.SelfName()) // May Output: // ___github_com_gogf_gf_v2_os_gfile__ExampleSelfName }

  
  

Basename

• 说明：获取给定路径中的最后一个元素，包含扩展名。

• 格式: 

  Code Block
  language go
  func Basename(path string) string

  
  

• 示例：

  Code Block
  language go
  func ExampleBasename() { // init var ( path = gfile.Pwd() + gfile.Separator + "testdata/readline/file.log" ) // Get the last element of path, which contains file extension. fmt.Println(gfile.Basename(path)) // Output: // file.log }

  
  

Name

• 说明：获取给定路径中的最后一个元素，不包含扩展名。

• 格式:

  Code Block
  language go
  func Name(path string) string

  
  

• 示例：

  Code Block
  language go
  func ExampleName() { // init var ( path = gfile.Pwd() + gfile.Separator + "testdata/readline/file.log" ) // Get the last element of path without file extension. fmt.Println(gfile.Name(path)) // Output: // file }

  
  

Dir

• 说明：获取给定路径的目录部分，排除最后的元素。

• 格式: 

  Code Block
  language go
  func Dir(path string) string

  
  

• 示例：

  Code Block
  language go
  func ExampleDir() { // init var ( path = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") ) // Get all but the last element of path, typically the path's directory. fmt.Println(gfile.Dir(path)) // Output: // /tmp/gfile_example_basic_dir }

  
  

Ext

• 说明：获取给定路径的扩展名，包含`.`。

• 格式: 

  Code Block
  language go
  func Ext(path string) string

  
  

• 示例：

  Code Block
  language go
  func ExampleExt() { // init var ( path = gfile.Pwd() + gfile.Separator + "testdata/readline/file.log" ) // Get the file name extension used by path. fmt.Println(gfile.Ext(path)) // Output: // .log }

  
  

ExtName

• 说明：获取给定路径的扩展名，不包含`.`。

• 格式: 

  Code Block
  language go
  func ExtName(path string) string

  
  

• 示例：

  Code Block
  language go
  func ExampleExtName() { // init var ( path = gfile.Pwd() + gfile.Separator + "testdata/readline/file.log" ) // Get the file name extension used by path but the result does not contains symbol '.'. fmt.Println(gfile.ExtName(path)) // Output: // log }