Function ajaxConvert

docs/welcome/js/jquery.js:8178–8260

( s, response )

// Chain conversions given the request and the original response
function ajaxConvert( s, response ) {
    var conv2, current, conv, tmp,
        converters = {},
        i = 0,
        // Work with a copy of dataTypes in case we need to modify it for conversion
        dataTypes = s.dataTypes.slice(),
        prev = dataTypes[ 0 ];

    // Apply the dataFilter if provided
    if ( s.dataFilter ) {
        response = s.dataFilter( response, s.dataType );
    }

    // Create converters map with lowercased keys
    if ( dataTypes[ 1 ] ) {
        for ( conv in s.converters ) {
            converters[ conv.toLowerCase() ] = s.converters[ conv ];
        }
    }

    // Convert to each sequential dataType, tolerating list modification
    for ( ; (current = dataTypes[++i]); ) {

        // There's only work to do if current dataType is non-auto
        if ( current !== "*" ) {

            // Convert response if prev dataType is non-auto and differs from current
            if ( prev !== "*" && prev !== current ) {

                // Seek a direct converter
                conv = converters[ prev + " " + current ] || converters[ "* " + current ];

                // If none found, seek a pair
                if ( !conv ) {
                    for ( conv2 in converters ) {

                        // If conv2 outputs current
                        tmp = conv2.split(" ");
                        if ( tmp[ 1 ] === current ) {

                            // If prev can be converted to accepted input
                            conv = converters[ prev + " " + tmp[ 0 ] ] ||
                                converters[ "* " + tmp[ 0 ] ];
                            if ( conv ) {
                                // Condense equivalence converters
                                if ( conv === true ) {
                                    conv = converters[ conv2 ];

                                // Otherwise, insert the intermediate dataType
                                } else if ( converters[ conv2 ] !== true ) {
                                    current = tmp[ 0 ];
                                    dataTypes.splice( i--, 0, current );
                                }

                                break;
                            }
                        }
                    }