🍩Ring 1.12:docs

- News
- Download
- Get Help
- Contribute
- Resources
- Team
- Website
- Index

### ナビゲーション

- 次へ »
- » 前へ |
- プログラミング言語 Ring 1.12 取扱説明書 »
- RingLibCurl の用法

# RingLibCurl の用法

RingLibCurl の用法を学びます。

## Get リクエスト

用例:

    load "libcurl.ring"

    curl = curl_easy_init()

    curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1)
    curl_easy_setopt(curl, CURLOPT_URL, "http://ring-lang.sf.net")

    curl_easy_perform(curl)

    curl_easy_cleanup(curl)

## Post リクエスト

用例:

    load "libcurl.ring"

    curl = curl_easy_init()

    cPostThis = "page=4&Number1=4&Number2=5"
    curl_easy_setopt(curl, CURLOPT_URL, "http://localhost/ringapp/index.ring?page=3")
    curl_easy_setopt(curl, CURLOPT_POSTFIELDS, cPostThis)

    curl_easy_perform(curl)

    curl_easy_cleanup(curl)

## Facebook へのログイン

用例:

    load "libcurl.ring"

    see "Enter Email : " give $login_email
    See "Enter Password : " give $login_pass

    curl = curl_easy_init()

    curl_easy_setopt(curl, CURLOPT_URL, 'https://www.facebook.com/login.php')
    curl_easy_setopt(curl, CURLOPT_POSTFIELDS,'charset_test=j u s t a t e s t'+
    ' &email='+urlencode($login_email)+'&pass='+
    urlencode($login_pass)+'&login=Login')
    curl_easy_setopt(curl, CURLOPT_POST, 1)
    curl_easy_setopt(curl, CURLOPT_HEADER, 0)
    curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1)
    curl_easy_setopt(curl, CURLOPT_COOKIEJAR, "cookies.txt")
    curl_easy_setopt(curl, CURLOPT_COOKIEFILE, "cookies.txt")
    curl_easy_setopt(curl, CURLOPT_USERAGENT, "Mozilla/5.0 (Windows; U;"+
    " Windows NT 5.1; en-US; rv:1.8.1.3) Gecko/20070309 Firefox/2.0.0.3")
    curl_easy_setopt(curl, CURLOPT_REFERER, "http://www.facebook.com")
    curl_easy_setopt(curl, CURLOPT_SSL_VERIFYPEER, FALSE)
    curl_easy_setopt(curl, CURLOPT_SSL_VERIFYHOST, 2)

    mylist = curl_slist_append(NULL,'Accept-Charset: utf-8')
    curl_slist_append(mylist,'Accept-Language: en-us,en;q=0.7,bn-bd;q=0.3')
    curl_slist_append(mylist,'Accept: text/xml,application/xml,'+
    'application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5')
    curl_easy_setopt(curl, CURLOPT_HTTPHEADER, mylist)

    curl_easy_setopt(curl, CURLOPT_COOKIESESSION, false)

    curl_easy_perform(curl)

    curl_easy_cleanup(curl)

    Func URLEncode cStr
            cOut = ""
            for x in cStr
                    if isalnum(x)
                            cOut += x
                    but x = " "
                            cOut += "+"
                    else
                            cOut += "%"+str2hex(x)
                    ok
            next
            return cOut

## 実行結果を文字列で保存

用例:

    load "libcurl.ring"

    curl = curl_easy_init()

    curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1)
    curl_easy_setopt(curl, CURLOPT_URL, "http://ring-lang.sf.net")

    cOutput = curl_easy_perform_silent(curl)

    See "Output:" + nl
    see cOutput

    curl_easy_cleanup(curl)

## Yahoo! から株式情報を取得

用例:

    Load "libcurl.ring"

    ### 第一部 --- 断片とクッキーの取得 -----------------------------------------

    See "Start curl_easy_init(): "+ nl
    curl = curl_easy_init()                     ### >>> HANDLE >>> 01006BD0  CURL  0

            curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1)
            curl_easy_setopt(curl, CURLOPT_COOKIEJAR,  "cookies.txt")
            curl_easy_setopt(curl, CURLOPT_COOKIEFILE, "cookies.txt")
            curl_easy_setopt(curl, CURLOPT_URL, "https://finance.yahoo.com/quote/AMZN/history")

            ###  HTML データ >>> STDOUT Window では curl_easy_perform_silent >>> String を使用。

    cOutput = curl_easy_perform_silent(curl)    ### データの取得 >>> String

    ###   データから断片 (Crumb) を抽出します。
    ###  "CrumbStore":{"crumb":"abcdefghijk"},

    if cOutput != NULL

            newStr1     = substr(cOutput, substr(cOutput, '"CrumbStore":{"crumb":"' ), 48 )
                    nPosS   = substr(newStr1, ':"' ) ;  ### crumb -2 の始点
                    nPosE   = substr(newStr1, '"}' ) ;  ### crumb の終点
                    nCount  = nPosE - nPosS -2          ### crumb の大きさ
            myCrumb     = substr(newStr1, nPosS +2, nCount)

            See "myCrumb.: |"+ myCrumb +"|" +nl

            ### UniCode の "\u002F" を "/" へ置換します。
                    if substr( myCrumb, "\u002F")
                       myCrumb = substr( myCrumb, "\u002F", "/")
                       See "myCrumb2: |"+ myCrumb +"|"+ nl
                    ok

    else
            See "No Connectivity to Yahoo. Looking for Cookie and Crumb." +nl +nl
    ok

    ### 第二部 --- URL へ断片とクッキーを送信 ----------------------------------------------

            ### Yahoo! へ URL+断片を送信して最初の株式履歴情報を取得します。

            $url = "https://query1.finance.yahoo.com/v7/finance/download/AMZN"+
                    "?period1=1277856000&period2=1498777545&interval=1wk" +
                    "&events=history&crumb=" + myCrumb

            curl_easy_setopt(curl, CURLOPT_URL, $url);
            cStr = curl_easy_perform_silent(curl)
            See cStr

    curl_easy_cleanup(curl)  ### cURL を閉じるのを忘れないように。

実行結果:

    myCrumb.: |sEEeW97mxvN|
    Date,Open,High,Low,Close,Adj Close,Volume
    2010-07-05,110.650002,117.480003,109.000000,117.260002,117.260002,21000400
    2010-07-12,117.809998,124.879997,117.320000,118.489998,118.489998,29407300
    2010-07-19,118.379997,121.250000,105.800003,118.870003,118.870003,74252100