传递标志变量去程序导致奇怪的输出

Question

sergiotapia at Macbook-Air in ~/Work/go/src/github.com/sergiotapia/gophers on master [!]
$ go build && go install && gophers -github_url=https://github.com/search?utf8=%E2%9C%93&q=location%3A%22San+Fransisco%22+location%3ACA+followers%3A%3E100&type=Users&ref=advsearch&l=
[1] 51873
[2] 51874
[3] 51875
[4] 51877
[2]   Done                    q=location%3A%22San+Fransisco%22+location%3ACA+followers%3A%3E100
[3]   Done                    type=Users
[4]+  Done                    ref=advsearch

---

我正在尝试使用long github url作为我的Gophers代码中的参数.它适用于所有其他网址类型,如组织或观星者.但是当我尝试使用搜索结果页面时,我得到了上面的奇怪输出.

https://github.com/search?utf8=%E2%9C%93&q=location%3A%22San+Fransisco%22+location%3ACA+followers%3A%3E100&type=Users&ref=advsearch&l=

package main

import (
    "flag"
    "log"
    "strings"

    "github.com/PuerkitoBio/goquery"
)

type user struct {
    name     string
    email    string
    url      string
    username string
}

func main() {
    url := flag.String("github_url", "", "github url you want to scrape")
    flag.Parse()
    githubURL := *url
    doc, err := goquery.NewDocument(githubURL)
    if err != nil {
        log.Fatal(err)
    }

    if strings.Contains(githubURL, "/orgs/") {
        scrapeOrganization(doc, githubURL)
    } else if strings.Contains(githubURL, "/search?") {
        scrapeSearch(doc, githubURL)
    } else if strings.Contains(githubURL, "/stargazers") {
        scrapeStarGazers(doc, githubURL)
    } else {
        scrapeProfile(doc)
    }
}

Answer 1

它是一个bash命令行(或者mac使用的任何东西).&并且?是必须逃脱的shell元字符.shell完全不知道URL是什么,也不应该知道.

go 'http://....'
   ^-----------^

添加引号将阻止shell解析元字符.另一种方法是自己手动逃离每个metachar:

go http://example.com/script.php\?foo=bar\&baz=qux
                                ^--------^

这很快变得乏味,而且容易出错.