php - 如何将 get_browser() 从 PHP 移植到 ColdFusion？

Question

browscap.iniget_browser()取决于http://browsers.garykeith.com/downloads _

有谁知道如何将看似简单的移植get_browser()到 CFML？

谢谢！

Answer 1

解决了！

这是基于http://forums.adobe.com/thread/620512的，并针对性能进行了优化，并提高了正确性。

它仍然很慢（~1s），因为使用 ColdFusion 处理 ini 文件意味着每个getProfileString()都是磁盘 I/O！使用 SSD 可能会更快。:)

function get_browser(user_agent=CGI.HTTP_USER_AGENT, browscap_ini=expandPath("./browscap.ini"))
{
    var result = {};

    // Read wildcard patterns from the INI file
    var browscap_list = getProfileSections(browscap_ini);

    // Seed some variables
    var browser_champion_pattern = "*";

    // Loop through the patterns to find the best match (relative to length of name pattern)
    for (var browser_name_pattern in browscap_list)
    {
        if (len(browser_name_pattern) >= len(browser_champion_pattern))
        {
            // Massage the wildcard into useable regex
            var browser_name_regex = replaceList(browser_name_pattern, ".,*,?,(,),[,]", "\.,.*,.,\(,\),\[,\]");

            if (left(browser_name_pattern, 1) != "*")
                browser_name_regex = "^" & browser_name_regex;

            if (right(browser_name_pattern, 1) != "*")
                browser_name_regex &= "$";

            // Test the resulting regex against the user agent
            if (reFindNoCase(browser_name_regex, user_agent))
                browser_champion_pattern = browser_name_pattern;
        }
    }

    // Set the winning regex patterns
    var browser_name_pattern = browser_champion_pattern;

    // Fetch the winning info
    var keynames = listToArray(browscap_list[browser_champion_pattern]);
    for (var keyname in keynames)
        result[keyname] = getProfileString(browscap_ini, browser_champion_pattern, keyname);

    // Fetch the rest of the info from parents
    while (structKeyExists(result, "parent"))
    {
        var parent = result.parent;

        structDelete(result, "parent");

        var keynames = listToArray(browscap_list[parent]);
        for (var keyname in keynames)
            if (!structKeyExists(result, keyname))
                result[keyname] = getProfileString(browscap_ini, parent, keyname);
    }

    return result;
}