Golang读取文件回车

时间:2018-02-02 20:04:13

标签: file go

您好我有一个实现读取文件换行符,但它不适用于Carriage Return文件,实现是:

file, err := os.Open(filePath)
    if err != nil {
        ross := int32(1)
        fileValidation = append(fileValidation, p.createPharmacyPanelLoaderResultErr(pharmacyPanel, &ross, err.Error(), err.Error()))
        return nil, fileValidation, int32(0)
    }

scanner := bufio.NewScanner(file)
for i := 0; scanner.Scan(); i++ {
 line := scanner.Text()
}

我想将此功能转换为可以使用回车符和换行符

1 个答案:

答案 0 :(得分:0)

我从源代码中获取了ScanLines函数,并对其进行了更改,因此它可以与\ r一起使用,但现在仅适用于\ r而不是\ n或\ r \ n

package main

import (
    "bufio"
    "bytes"
    "fmt"
    "os"
)

func ScanLinesWithCR(data []byte, atEOF bool) (advance int, token []byte, err error) {
    if atEOF && len(data) == 0 {
        return 0, nil, nil
    }
    if i := bytes.IndexByte(data, '\r'); i >= 0 {
        // We have a full newline-terminated line.
        return i + 1, data[0:i], nil
    }
    // If we're at EOF, we have a final, non-terminated line. Return it.
    if atEOF {
        return len(data), data, nil
    }
    // Request more data.
    return 0, nil, nil
}

func main() {
    f, _ := os.Open("test.txt")
    defer f.Close()
    scanner := bufio.NewScanner(f)
    scanner.Split(ScanLinesWithCR)
    for scanner.Scan() {
        fmt.Println(">", scanner.Text())
    }
}