从字符串中提取引用部分

Question

我正在尝试使用以下代码从字符串中提取引用部分：

package main
import ("fmt")
func main(){
    var oristr = "This is a \"test string\" for testing only"
    var quotedstr = ""
    var newstr = ""
    var instring = false
    fmt.Println(oristr)
    for i,c := range oristr {
        fmt.Printf("Char number: %d; char: %c\n", i, c);
        if c = `"` {
            if instring
            {instring=false}
            else {instring=true}}
        if instring
        {quotedstr += c}
        else {newstr += c}
    }
    fmt.Printf("Newstr: %s; quotedstr = %s", newstr, quotedstr )
}

但是，我收到以下错误：

# command-line-arguments
./getstring.go:11:14: syntax error: c = `"` used as value
./getstring.go:12:15: syntax error: unexpected newline, expecting { after if clause
./getstring.go:14:4: syntax error: unexpected else, expecting }
./getstring.go:15:3: syntax error: non-declaration statement outside function body

为什么我会收到这个错误，如何纠正？

另外，这个方法好还是其他方法更好？

Answer 1

这是获得所需内容的最基本方法。它可以改进为更健壮等

package main

import (
    "fmt"
    "regexp"
)

func main() {
    var oristr = "This is a \"test string\" for containing multiple \"test strings\" and another \"one\" here"
    re := regexp.MustCompile(`"[^"]+"`)
    newStrs := re.FindAllString(oristr, -1)
    for _, s := range newStrs {
        fmt.Println(s)
    }
}

从字符串中提取引用部分

Extracting quoted part from string

string

go

double-quotes