CODEWITHSUNDEEP
iosswift
Yuichi Kato
Yuichi Kato

Reputation: 891

How to extract search keywords from Google search result page URL by Swift?

How do you extract search keywords from Google search result page URL by Swift?

I was simply trying to get stings after "&q=" but I found out I needed to consider more complicated cases such as "https://www.google.co.jp/search?hl=ja&q=test#q=speedtest+%E4%BE%A1%E6%A0%BC&hl=ja&prmd=nsiv&tbs=qdr:d"

I would appreciate your advice.

Update: As per advised by LEO, I put this way. 

if let url = NSURL(string: urlStr){

        var extractedQuery = ""
        if let fragment = url.fragment {
            extractedQuery = fragment
        } else if let query = url.query{
            extractedQuery = query
        }


        if let queryRange = extractedQuery.rangeOfString("&q="){
            let queryStartIndex = queryRange.endIndex
            let queryKeyword = extractedQuery.substringFromIndex(queryStartIndex)
            print(queryKeyword)
        }
    }

Upvotes: 3

Views: 657

Answers (1)

Leo Dabus
Leo Dabus

Reputation: 236478

You can convert your string to NSURL and access its query and fragment properties:

if let url = NSURL(string: "https://www.google.co.jp/search?hl=ja&q=test#q=speedtest+%E4%BE%A1%E6%A0%BC&hl=ja&prmd=nsiv&tbs=qdr:d"), query = url.query, fragment = url.fragment {
    print(query)    // "hl=ja&q=test\n"
    print(fragment) // "q=speedtest+%E4%BE%A1%E6%A0%BC&hl=ja&prmd=nsiv&tbs=qdr:d\n"
}

Upvotes: 1

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