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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
Tip |
---|
以下常用方法列表,文档更新可能滞后于代码新特性,更多的方法及示例请参考代码文档: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 }
GetBytes
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
说明:读取指定路径文件内容,以字节形式返回。示例:
Code Block language go func
ExampleGetBytesExampleGetBytesWithCache() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_
contentcache") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example content") // It reads
andthe file content
as []byte.with cache duration of one minute, //
Itwhich
returnsmeans it
nilreads
iffrom
itcache
failsafter
reading,then
forwithout
example,any
withIO
permissionoperations
orwithin
IOon
errorminute. fmt.Println(gfile.
GetBytesGetBytesWithCache(tempFile, time.Minute)) //
Output:
// [103 111 102 114 97 109 101 32 101 120 97 109 112 108 101 32 99 111 110 116 101 110 116]
}
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。
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)) //
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
}
示例:
language | go |
---|
PutBytes
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 =
- 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
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.PutBytesPutContents(tempFile, []byte("goframe example content")) // read contentsIt 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.GetContentsGetBytes(tempFile)) // Output: // goframe example content }
PutContentsAppend
[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:
- 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。 示例:
Code Block language go func
ExamplePutContentsAppendGetBytesTilChar(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") // read contents fmt.Println(gfile.GetContents(tempFile))f, _ := gfile.OpenWithFlagPerm(tempFile, os.O_RDONLY, gfile.DefaultPermOpen) // ItGetBytesTilChar createsreturns andthe appendcontents contentof stringthe intofile specifies file path.as []byte // Ituntil automaticallythe createsnext directoryspecified recursivelybyte if it does not exist`char` position. gfile.PutContentsAppend(tempFilechar, "i append content") // read contents:= gfile.GetBytesTilChar(f, 'f', 0) fmt.Println(gfile.GetContents(tempFile)char) fmt.Println(i) // Output: // goframe[103 example111 content102] // 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。
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 ExamplePutBytesAppendExampleGetBytesByTwoOffsets() { // 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))f, _ := gfile.OpenWithFlagPerm(tempFile, os.O_RDONLY, gfile.DefaultPermOpen) // GetBytesTilChar write contents gfile.PutBytesAppend(tempFile,returns the contents of the file as []byte(" append")) // read contents until the next specified byte `char` position. char := gfile.GetBytesByTwoOffsets(f, 0, 3) fmt.Println(gfile.GetContents(tempFile)char) // Output: // goframe[103 example111 content // goframe example content append }
GetNextCharOffsetByPath
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:
- 说明:从某个偏移量开始,获取文件中指定字符所在下标 示例:
Code Block language go func putContents(path string, data []byte, flag int, perm os.FileMode) error
示例:
Code Block language go func ExamplePutContents() { ExampleGetNextCharOffsetByPath() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_content") tempFile = gfile.Join(tempDir, fileName) ) // write contents 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 index := fmt.Println(gfile.GetNextCharOffsetByPathGetContents(tempFile, 'f', 0) fmt.Println(index) // Output: // goframe example 2content }
GetBytesTilCharByPath
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:
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Code Block language go func PutBytes(path string, content []byte) error
示例:
Code Block language go func ExampleGetBytesTilCharByPathExamplePutBytes() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_content") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContentsPutBytes(tempFile, []byte("goframe example content")) // read contents fmt.Println(gfile.GetBytesTilCharByPathGetContents(tempFile, 'f', 0)) // Output: // [103goframe 111 102] 2example content }
GetBytesByTwoOffsetsByPath
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:
说明:用两个偏移量截取指定文件的内容以字节形式返回Code Block language go func PutContentsAppend(path string, content string) error
示例:
Code Block language go func ExampleGetBytesByTwoOffsetsByPathExamplePutContentsAppend() { // 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.GetBytesByTwoOffsetsByPathGetContents(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
示例:
Code Block language go func ExampleReadLines() {It creates and append content string into specifies file path. // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_content") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents It automatically creates directory recursively if it does not exist. gfile.PutContentsAppend(tempFile, "L1 goframe exampleappend content\nL2 goframe example content") // read contents fmt.Println(gfile.ReadLines(tempFile, func(text string) error { // Process each line fmt.Println(text) return nil }) GetContents(tempFile)) // Output: // L1 goframe example content // L2 goframe example content append content }
ReadLinesBytes
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:
说明:以字节形式逐行读取文件内容Code Block language go func PutBytesAppend(path string, content []byte) error
示例:
Code Block language go func ExampleReadLinesBytesExamplePutBytesAppend() { // 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 fmt.Println(gfile.ReadLinesBytesGetContents(tempFile, func(bytes []byte) error { )) // Processwrite each linecontents fmt.Println(bytes) return nil }gfile.PutBytesAppend(tempFile, []byte(" append")) // read contents fmt.Println(gfile.GetContents(tempFile)) // Output: // [76goframe 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] }
内容替换
ReplaceFile
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
- 说明:替换指定文件的指定内容为新内容
示例:
Code Block language go func ExampleReplaceFile() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_replacecontent") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example content") //f, read contents fmt.Println(err := gfile.GetContentsOpenWithFlagPerm(tempFile, os.O_RDONLY, DefaultPermOpen) defer f.Close() // It replaces content directly by file path. gfile.ReplaceFile("content", "replace word", tempFile) read contents index := gfile.GetNextCharOffset(f, 'f', 0) fmt.Println(gfile.GetContents(tempFileindex)) // Output: // goframe example content // goframe example replace word }
ReplaceFileFunc
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:
- 说明:使用自定义函数替换指定文件内容 示例:
Code Block language go func GetNextCharOffsetByPath(path string, char byte, start int64) int64
示例:
Code Block language go func ExampleGetNextCharOffsetByPath() { // init var ( ExampleReplaceFileFunc() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_replacecontent") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example 123content") // read contents fmt.Println(index := gfile.GetContentsGetNextCharOffsetByPath(tempFile, 'f', 0) fmt.Println(index) // 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
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:
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Code Block language go func GetBytesByTwoOffsetsByPath(path string, start int64, end int64) []byte
示例:
Code Block language go func ExampleReplaceDirExampleGetBytesByTwoOffsetsByPath() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_replacecontent") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "goframe example content") // read contents fmt.Println(gfile.GetContentsGetBytesByTwoOffsetsByPath(tempFile, 0, 7)) // 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
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
- 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
示例:
Code Block language go func ExampleReplaceDirFuncExampleReadLines() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_replacecontent") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "L1 goframe example 123") content\nL2 goframe example content") // 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) stringReadLines(tempFile, func(text string) error { // ReplaceProcess witheach regular matchline reg, _ := regexp.Compile(`\d{3}`fmt.Println(text) return reg.ReplaceAllString(content, "[num]") }, tempDir, "gflie_example.txt", true) fmt.Println(gfile.GetContents(tempFile)) // Output: //nil }) // Output: // L1 goframe example 123content // L2 goframe example [num]content }
ReadLinesBytes
MTime
- 说明:以字节形式逐行读取文件内容说明:获取路径修改时间
格式:
Code Block language go func
ExampleMTimeReadLinesBytes(
) {
t := gfile.MTime(gfile.TempDir())
fmt.Println(t)
// May Output:
// 2021-11-02 15:18:43.901141 +0800 CST
}
示例:
MTimestamp
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)
- 说明:获取路径修改时间戳(秒)
示例:
Code Block language go func ExampleMTimestamp() { t := gfile.MTimestamp(gfile.TempDir()) fmt.Println(t) // May Output: write contents gfile.PutContents(tempFile, "L1 goframe example content\nL2 goframe example content") // read 1635838398 }
MTimestampMilli
- 说明:获取路径修改时间戳(毫秒)
示例:
Code Block language go func ExampleMTimestampMilli()contents gfile.ReadLinesBytes(tempFile, func(bytes []byte) error { t := gfile.MTimestampMilli(gfile.TempDir()) // Process each line fmt.Println(tbytes) return nil }) // May Output: // 1635838529330 }
文件大小
Size
[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)) }
- 说明:获取路径大小,不进行格式化
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: // 10sub_dir }
SizeFormat
ScanDirFileFunc
- 说明:获取路径大小,并格式化成硬盘容量说明:扫描指定目录的文件(自定义过滤方法),支持递归扫描。 示例:
格式:
Code Block language go func
ExampleSizeFormatScanDirFileFunc(
) {
// 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
path string, pattern string, recursive bool, handler func(path string) string) ([]string, error)
示例:
Code Block language go func ExampleReadableSizeExampleScanDirFileFunc() { // init var ( fileName = "gflie_example.txt" tempDir = gfile.TempDir("gfile_example_sizescan_dir_file_func") tempFile = gfile.Join(tempDir, fileName) ) // write contents gfile.PutContents(tempFile, "01234567899876543210") fmt.Println(gfile.ReadableSize(tempFile)) // Output: // 20.00B }
StrToSize
示例:
Code Block | ||
---|---|---|
| ||
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`
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(sizeStr1tempDir, 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") // 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。
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)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: // [/0123 /aaa /aaa/ /aaa/bbb/ /aaa/bbb/ccc.txt /aaa/ccc/ddd.txt /bbb /ccc /ddd] }
文件检索
Search
gflie_example.txt // gflie_example.txt }
常用目录
Pwd
- 说明:获取当前工作路径。
格式:
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。Code Block language go func Pwd() string
示例:
Code Block language go func
ExampleSearchExamplePwd() { //
init
var (
fileName = "gflie_example.txt"
tempDir = gfile.TempDir("gfile_example_search")
tempFile = gfile.Join(tempDir, fileName)
Get absolute path of current working directory. fmt.Println(gfile.Pwd()) //
writeMay
contentsOutput: // 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.PutContents(tempFile, "goframe example content") // search file realPath, _ := gfile.SearchHome(fileName, tempDir) fmt.Println(gfile.Basename(realPath)homePath) // May Output: // gflie_example.txt }
目录扫描
ScanDir
C:\Users\hailaz }
TempDir
说明:获取拼接系统临时路径后的绝对地址。
格式:
说明:扫描指定目录,可扫描文件或目录,支持递归扫描。Code Block language go func TempDir(names ...string) string
示例:
Code Block language go func
ExampleScanDirExampleTempDir() { // init var ( fileName
= "gflie_example.txt"
tempDir =
gfile.TempDir("gfile_example_
scanbasic_dir"
))
tempSubDir// fetch
= gfile.Join(tempDir, "sub_dir")
tempSubFile = gfile.Join(tempSubDir, fileName)
)
// write contents
gfile.PutContents(tempFile, "goframe example content")
gfile.PutContents(tempSubFile, "goframe example content"an absolute representation of path. path := gfile.TempDir(fileName) fmt.Println(path) //
scans directory recursivelyOutput:
list, _ := gfile.ScanDir(tempDir, "*", true)
for _, v := range list {
// /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.
BasenameSelfPath(
v))
}// May Output: //
gflie_example.txt
// sub_dir
// gflie_example.txt
}
ScanDirFile
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:
说明:扫描指定目录的文件,支持递归扫描Code Block language go func IsDir(path string) bool
示例:
Code Block language go func
ExampleScanDirFileExampleIsDir() { // init
var (
fileName = "gflie_example.txt"
tempDir = gfile.TempDir("gfile_example_scan_dir_file")
tempFile = gfile.Join(tempDir, fileName)
tempSubDirvar ( path = gfile.
JoinTempDir(
tempDir, "sub"gfile_example_basic_dir")
tempSubFilefilePath = gfile.Join(
tempSubDir, fileName)
)
// write contents
gfile.
PutContentsTempDir(
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 {
gfile_example_basic_dir"), "file1") ) // Checks whether given `path` a directory. fmt.Println(gfile.
BasenameIsDir(
vpath))
}fmt.Println(gfile.IsDir(filePath)) // Output: //
gflie_example.txttrue //
gflie_example.txtfalse }
ScanDirFunc
IsFile
- 说明:检查给定的路径是否是文件。
格式:
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Code Block language go func IsFile(path string) bool
示例:
Code Block language go func
ExampleScanDirFuncExampleIsFile() { // init var (
fileNamefilePath =
"gflie_example.txt"
tempDir = gfile.Join(gfile.TempDir("gfile_example_
scanbasic_dir
_func")
tempFile = gfile.Join(tempDir,
fileName"file1")
dirPath = gfile.
JoinTempDir(
tempDir, "sub"gfile_example_basic_dir")
tempSubFile = gfile.Join(tempSubDir, fileName)
)
// write contents
gfile.PutContents(tempFile, "goframe example content")
gfile.PutContents(tempSubFile, "goframe example content") // Checks whether given `path` a file, which means it's not a directory. fmt.Println(gfile.IsFile(filePath)) fmt.Println(gfile.IsFile(dirPath)) //
scans directory recursively
list, _ := gfile.ScanDirFunc(tempDir, "*", true, funcOutput: // 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)
stringbool
示例:
Code Block language go func ExampleIsReadable() {
//
ignores some filesinit var (
ifpath = gfile.
BasenamePwd(
path)
== "gflie_example.txt" {
return ""
}
return path
})
for _, v := range list {
+ gfile.Separator + "testdata/readline/file.log" ) // Checks whether given `path` is readable. fmt.Println(gfile.
BasenameIsReadable(
vpath))
}// Output: //
sub_dirtrue }
ScanDirFileFunc
IsWritable
- 说明:扫描指定目录的文件(自定义过滤方法),支持递归扫描。
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
示例: 格式:
Code Block language go func
ExampleScanDirFileFuncIsWritable(
) {
// 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")
tempSubFilepath string) bool
示例:
Code Block language go func ExampleIsWritable() { // init var ( path = gfile.
JoinPwd(
tempSubDir, fileName)
)
// write contents
gfile.PutContents(tempFile, "goframe example content")
gfile.PutContents(tempFile1, "goframe example content")
gfile.PutContents(tempSubFile, "goframe example content"+ gfile.Separator + "testdata/readline/file.log" ) //
scansChecks
directorywhether
recursivelygiven
exclusive`path`
ofis
directorieswritable.
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
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
- 说明:获取当前工作路径。
示例:
Code Block language go func ExamplePwd() { // Get absolute path of current working directory. fmt.Println(gfile.Pwd()) // May Output:Change file model gfile.Chmod(path, gfile.DefaultPermCopy) // xxx/gf/os/gfile }
Home
- 说明:获取运行用户的主目录
Get a FileInfo describing the named file. stat, _ = gfile.Stat(path) // Show the modified mode fmt.Println(stat.Mode(
homePath)) //
MayOutput: // -rw-r--r-- //
C:\Users\hailaz-rwxrwxrwx }
示例:
language | go |
---|
TempDir
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:
说明:获取拼接系统临时路径后的绝对地址。Code Block language go func Mkdir(path string) error
示例:
Code Block language go func ExampleTempDirExampleMkdir() { // init var ( fileName = "gfile_example_basic_dir" ) // fetch an absolute representation of path. path := gfile.TempDir(fileName) fmt.Println(path"gfile_example_basic_dir") ) // Creates Output:directory // /tmp/gfile_example_basic_dir }
SelfPath
说明:获取当前运行程序的绝对路径。
示例:
Code Block language go func ExampleSelfPath() {gfile.Mkdir(path) // GetCheck absoluteif file path of current running processdirectory exists fmt.Println(gfile.SelfPathIsDir(path)) // May Output: // xxx/___github_com_gogf_gf_v2_os_gfile__ExampleSelfPath }
类型判断
IsDir
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:
说明:检查给定的路径是否是文件夹。Code Block language go func Create(path string) (*os.File, error)
示例:
Code Block language go func ExampleIsDirExampleCreate() { // init var ( path = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") filePathdataByte = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1"make([]byte, 50) ) // ChecksCheck whether giventhe `path` a directory. fmt.Println(gfile.IsDirfile exists isFile := gfile.IsFile(path)) fmt.Println(gfile.IsDir(filePath)) // Output:(isFile) // Creates file with given `path` recursively fileHandle, _ := gfile.Create(path) defer fileHandle.Close() // true // false }
IsFile
- 说明:检查给定的路径是否是文件。
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(dirPathWrite 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 // falsehello goframe }
权限操作
IsReadable
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)
说明:检查给定的路径是否可读。
示例:
Code Block language go func ExampleIsReadableExampleOpen() { // init var ( path = gfile.PwdJoin() + 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
示例:
Code Block language go func ExampleIsWritable() { // init var ( path = gfile.Pwd() + gfile.Separator + "testdata/readline/file.log" 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() // Checks whether given `path` is writable.Read data n, _ := file.Read(dataByte) fmt.Println(gfile.IsWritable(pathstring(dataByte[:n])) // Output: // true }
Chmod
hello goframe }
OpenFile
- 说明:以指定`flag`以及`perm`的方式打开文件/文件夹。
格式:
说明:使用指定的权限,更改指定路径的文件权限。Code Block language go func OpenFile(path string, flag int, perm os.FileMode) (*os.File, error)
示例:
Code Block language go func ExampleChmodExampleOpenFile() { // init var ( path = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") ) //dataByte Get a FileInfo describing the named file. stat, err := gfile.Stat(path) if err != nil { fmt.Println(err.Error()) }= make([]byte, 4096) ) // 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
。 示例:
Code Block language go func ExampleMkdir() { // init var ( path = gfile.TempDir("gfile_example_basic_dir") 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) // CreatesRead directorydata gfile.Mkdir(path) // Check if directory existsunix.Seek(int(openFile.Fd()), 0, 0) n, _ := openFile.Read(dataByte) fmt.Println(gfile.IsDir(pathstring(dataByte[:n])) // Output: // true 28 // hello goframe test open file }
Create
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)
- 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!
示例:
Code Block language go func ExampleCreateExampleOpenWithFlag() { // init var ( path = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") dataByte = make([]byte, 504096) ) // CheckOpens whetherfile/directory thewith filecustom exists`flag` isFile := gfile.IsFile(path) fmt.Println(isFile) // Creates file with given `path` recursively fileHandle// Create if file does not exist,it is created in a readable and writable mode with default `perm` is 0666 openFile, _ := gfile.CreateOpenWithFlag(path, os.O_CREATE|os.O_RDWR) defer fileHandleopenFile.Close() // Write some content to file nwriteLength, _ := fileHandleopenFile.WriteString("hello goframe") // Check whether the test open file exists isFile = gfile.IsFile(pathwith flag") fmt.Println(isFilewriteLength) // ResetRead file uintptrdata unix.Seek(int(fileHandleopenFile.Fd()), 0, 0) //n, Reads len(b) bytes from the File fileHandle_ := openFile.Read(dataByte) fmt.Println(string(dataByte[:n])) // Output: // false // true38 // hello goframe test open file with flag }
Open
OpenWithFalgPerm
- 说明:以指定`flag`以及`perm`的方式打开文件/文件夹。
格式:
说明:以只读的方式打开文件/文件夹。Code Block language go func OpenWithFlagPerm(path string, flag int, perm os.FileMode) (*os.File, error)
示例:
Code Block language go func ExampleOpenExampleOpenWithFlagPerm() { // init var ( path = gfile.Join(gfile.TempDir("gfile_example_basic_dir"), "file1") dataByte = make([]byte, 4096) ) // Opens file/directory with custom `flag` and `perm` // OpenCreate if file or directory with READONLY model filedoes not exist,it is created in a readable and writable mode with `perm` is 0777 openFile, _ := gfile.OpenOpenWithFlagPerm(path, os.O_CREATE|os.O_RDWR, gfile.DefaultPermCopy) defer fileopenFile.Close() // Read dataWrite some content to file nwriteLength, _ := fileopenFile.Read(dataByteWriteString("hello goframe test open file with flag and perm") fmt.Println(string(dataByte[:n])writeLength) // Output: // hello goframe }
OpenFile
// 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
- 说明:以指定`flag`以及`perm`的方式打开文件/文件夹。
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, _ := openFilegfile.ReadStat(dataBytepath) fmt.Println(string(dataByte[:n]stat.Name()) // Output: // 28 // hello goframe test open file }
OpenWithFalg
示例:
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
Code Block | ||
---|---|---|
| ||
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。
示例:
Code Block language go func
ExampleOpenWithFlagPermExampleCopy() { // init var (
pathsrcFileName
= "gflie_example.txt" srcTempDir =
gfile.Join(gfile.TempDir("gfile_example_
basiccopy_
dirsrc")
, "file1")srcTempFile =
make([]byte, 4096)
gfile.Join(srcTempDir, srcFileName)
// 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(copy file dstFileName = "gflie_example_copy.txt" dstTempFile = gfile.Join(srcTempDir, dstFileName) // copy dir dstTempDir = gfile.TempDir("gfile_example_copy_dst") ) //
Write some content to file
writeLength, _ := openFile.WriteString("hello goframe test open file with flag and perm")
write contents gfile.PutContents(srcTempFile, "goframe example copy") // copy file gfile.Copy(srcTempFile, dstTempFile) // read contents after copy file fmt.Println
(writeLength(gfile.GetContents(dstTempFile)) //
Readcopy
datadir
unixgfile.
Seek(int(openFile.Fd()), 0, 0)
nCopy(srcTempDir, dstTempDir) // list copy dir file fList, _ :=
openFilegfile.
Read(dataByte)
ScanDir(dstTempDir, "*", false) for _, v := range fList { fmt.Println(
string(dataByte[:n]gfile.Basename(v)) } // Output: // goframe example
38copy //
hello goframe test open file with flag
}
Stat
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)
- 说明:获取给定路径的文件详情。
示例:
Code Block language go func
ExampleStatExampleCopyFile() { // init var (
pathsrcFileName =
gfile.Join("gflie_example.txt" srcTempDir = gfile.TempDir("gfile_example_
basiccopy_
dirsrc") srcTempFile = gfile.Join(srcTempDir,
"file1"srcFileName)
)
// Get a FileInfo describing the named file.
stat, _ :// copy file dstFileName = "gflie_example_copy.txt" dstTempFile = 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()Join(srcTempDir, dstFileName) ) // write contents gfile.PutContents(srcTempFile, "goframe example copy") // copy file gfile.CopyFile(srcTempFile, dstTempFile) // read contents
May Output:
// file1
// false
// -rwxr-xr-xafter copy file fmt.Println(gfile.GetContents(dstTempFile)) //
2021-12-02 11:01:27.261441694 +0800 CSTOutput: //
&{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
goframe example copy }
CopyDir
- 说明:支持复制文件或目录
格式:
说明:支持复制文件或目录Code Block language go func CopyDir(src string, dst string) error
示例:
Code Block language go func ExampleCopyExampleCopyDir() { // 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"(srcTempDir, dstFileName) // copy filedir dstTempDir = gfile.Copy(srcTempFile, dstTempFile) TempDir("gfile_example_copy_dst") ) // read contents after copy file fmt.Println(gfile.GetContents(dstTempFile)) // copy dir gfile.CopyCopyDir(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 }
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
true }
Remove
说明:删除给定路径的文件或文件夹。
格式:
说明:删除给定路径的文件或文件夹。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
.go] }
Exists
- 说明:检查给定的路径是否存在 。
格式:
说明:检查给定的路径是否存在 。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
/ }
SelfName
说明:获取当前运行程序的名称。
格式:
说明:获取当前运行程序的名称。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 }
Panel | ||
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| ||
|