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gfile
模块是对文件操作的进一步封装,提供了常用的,简易的API来操作底层文件,隐藏了复杂的底层实现细节。
使用方式:
import "github.com/gogf/gf/os/gfile"
接口文档:
https://godoc.org/github.com/gogf/gf/os/gfile
缓存
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
示例:
Code Block language go func ExampleGetContentsWithCache() { // init fileName := "123.txt" tempDir := gfile.TempDir("gfile_example_cache") tempFile := gfile.Join(tempDir, fileName) gfile.Mkdir(fileName) gfile.Create(tempFile) // write contents gfile.PutContents(tempFile, "test contents") // read contents content := gfile.GetContentsWithCache(tempFile, time.Minute) fmt.Println(content) time.Sleep(time.Second * 1) // read contents content1 := gfile.GetContentsWithCache(tempFile) fmt.Println(content1) // write new contents will clear its cache gfile.PutContents(tempFile, "new test contents") // read contents content2 := gfile.GetContentsWithCache(tempFile) fmt.Println(content2) // Output: // test contents // test contents // new test contents }
修改时间
MTime
- 说明:获取路径修改时间
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 }
ExampleMTimestamp
- 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: // 1635838398 }
ExampleMTimestampMilli
- 说明:获取路径修改时间戳(毫秒)
示例:
Code Block language go func ExampleMTimestampMilli() { t := gfile.MTimestampMilli(gfile.TempDir()) fmt.Println(t) // May Output: // 1635838529330 }
大小
Size
- 说明:获取路径大小
示例:
Code Block language go func ExampleSize() { tempDir := gfile.TempDir("gfile_example") gfile.Mkdir(tempDir) size := gfile.Size(tempDir) fmt.Println(size) // Output: // 0 }
SizeFormat
- 说明:获取路径大小,并格式化
示例:
Code Block language go func ExampleSizeFormat() { tempDir := gfile.TempDir("gfile_example") gfile.Mkdir(tempDir) sizeStr := gfile.SizeFormat(tempDir) fmt.Println(sizeStr) // Output: // 0.00B }
ReadableSize
- 说明:获取路径大小,并格式化人类易读
示例:
Code Block language go func ExampleReadableSize() { tempDir := gfile.TempDir("gfile_example") gfile.Mkdir(tempDir) sizeStr := gfile.ReadableSize(tempDir) fmt.Println(sizeStr) // Output: // 0.00B }
StrToSize
- 说明:大小字符串转换为大小整形
示例:
Code Block language go func ExampleStrToSize() { size := gfile.StrToSize("100MB") fmt.Println(size) // Output: // 104857600 }
FormatSize
- 说明:大小整形转换为大小字符串
示例:
Code Block language go func ExampleFormatSize() { sizeStr := gfile.FormatSize(104857600) fmt.Println(sizeStr) sizeStr1 := gfile.FormatSize(999999999999999999) fmt.Println(sizeStr1) // Output: // 100.00M // 888.18P }
排序
SortFiles
- 说明:排序多个路径
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] }
搜索
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
示例:
Code Block language go func ExampleSearch() { // init fileName := "123.txt" tempDir := gfile.TempDir("gfile_example") tempFile := gfile.Join(tempDir, fileName) gfile.Mkdir(tempDir) gfile.Create(tempFile) // search file realPath, _ := gfile.Search(fileName, tempDir) fmt.Println(gfile.Basename(realPath)) // Output: // 123.txt }
扫描目录
ScanDir
- 说明:扫描指定目录,可扫描文件或目录,支持递归扫描
示例:
Code Block language go func ExampleScanDir() { // init fileName := "123.txt" tempDir := gfile.TempDir("gfile_example") tempFile := gfile.Join(tempDir, fileName) tempSubDir := gfile.Join(tempDir, "sub_dir") tempSubFile := gfile.Join(tempSubDir, fileName) gfile.Mkdir(tempSubDir) gfile.Create(tempFile) gfile.Create(tempSubFile) // scans directory recursively list, _ := gfile.ScanDir(tempDir, "123.txt,sub_dir", true) for _, v := range list { fmt.Println(gfile.Basename(v)) } // Output: // 123.txt // sub_dir // 123.txt }
ScanDirFile
- 说明:扫描指定目录的文件,支持递归扫描
示例:
Code Block language go func ExampleScanDirFile() { // init fileName := "123.txt" tempDir := gfile.TempDir("gfile_example") tempFile := gfile.Join(tempDir, fileName) tempSubDir := gfile.Join(tempDir, "sub_dir") tempSubFile := gfile.Join(tempSubDir, fileName) gfile.Mkdir(tempSubDir) gfile.Create(tempFile) gfile.Create(tempSubFile) // scans directory recursively exclusive of directories list, _ := gfile.ScanDirFile(tempDir, "123.txt,sub_dir", true) for _, v := range list { fmt.Println(gfile.Basename(v)) } // Output: // 123.txt // 123.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
示例:
Code Block language go func ExampleScanDirFunc() { // init fileName := "123.txt" fileName1 := "1234.txt" tempDir := gfile.TempDir("gfile_example_1") tempFile := gfile.Join(tempDir, fileName) tempSubDir := gfile.Join(tempDir, "sub_dir") tempSubFile := gfile.Join(tempSubDir, fileName1) gfile.Mkdir(tempSubDir) gfile.Create(tempFile) gfile.Create(tempSubFile) // scans directory recursively list, _ := gfile.ScanDirFunc(tempDir, "123.txt,1234.txt,sub_dir", true, func(path string) string { // ignores some files if gfile.Basename(path) == "1234.txt" { return "" } return path }) for _, v := range list { fmt.Println(gfile.Basename(v)) } // Output: // 123.txt // 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
示例:
Code Block language go func ExampleScanDirFileFunc() { // init fileName := "123.txt" fileName1 := "1234.txt" tempDir := gfile.TempDir("gfile_example_1") tempFile := gfile.Join(tempDir, fileName) tempSubDir := gfile.Join(tempDir, "sub_dir") tempSubFile := gfile.Join(tempSubDir, fileName1) gfile.Mkdir(tempSubDir) gfile.Create(tempFile) gfile.Create(tempSubFile) // scans directory recursively exclusive of directories list, _ := gfile.ScanDirFileFunc(tempDir, "123.txt,1234.txt,sub_dir", true, func(path string) string { // ignores some files if gfile.Basename(path) == "1234.txt" { return "" } return path }) for _, v := range list { fmt.Println(gfile.Basename(v)) } // Output: // 123.txt }
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