dshtze500055
2015-12-05 23:58
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Golang:替换文本文件中字符串中的换行符的问题

I've been trying to have a File be read, which will then put the read material into a string. Then the string will get split by line into multiple strings:

absPath, _ := filepath.Abs("../Go/input.txt")
data, err := ioutil.ReadFile(absPath)
if err != nil {
    panic(err)
}
input := string(data)

The input.txt is read as:

a

strong little bird

with a very

big heart

went

to school one day and

forgot his food at

home

However,

re = regexp.MustCompile("\
")
input = re.ReplaceAllString(input, " ")

turns the text into a mangled mess of:

homeot his food atand

I'm not sure how replacing newlines can mess up so badly to the point where the text inverts itself

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我一直试图读取File,然后将读取的内容放入字符串中。 然后,该字符串将按行拆分为多个字符串:

  absPath,_:= filepath.Abs​​(“ ../ Go / input.txt”)
data,err  := ioutil.ReadFile(absPath)
if err!= nil {
 panic(err)
} 
input:= string(data)
   
 
 

The input.txt读取为:

a

强壮的小鸟

大心脏

有一天上学, \ n

忘记了他的食物

但是

   re = regexp.MustCompile(“ \
”)
input = re.ReplaceAllString(input,“”)
   
 
 

将文本变成整齐的

在他的食物上放饭

一团糟 如此严重地上升到文本自身反转的程度

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2条回答 默认 最新

  • doushe8577 2015-12-06 00:15
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    I guess that you are running the code using Windows. Observe that if you print out the length of the resulting string, it will show something over 100 characters. The reason is that Windows uses not only newlines ( ) but also carriage returns () - so a newline in Windows is actually , not . To properly filter them out of your string, use:

    re = regexp.MustCompile(`?
    `)
    input = re.ReplaceAllString(input, " ")
    

    The backticks will make sure that you don't need to quote the backslashes in the regular expression. I used the question mark for the carriage return to make sure that your code works on other platforms as well.

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  • dtrb96410 2015-12-06 00:37

    I do not think that you need to use regex for such an easy task. This can be achieved with just

    absPath, _ := filepath.Abs("../Go/input.txt")
    data, _ := ioutil.ReadFile(absPath)
    input := string(data)
    strings.Replace(input, "
    ","",-1)
    

    example of removing

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