var readBatch = function()

in JSLib/src/odata-batch.js [106:170]
43 lines of code
11 McCabe index (conditional complexity)

    var readBatch = function (text, context) {
        /// <summary>
        /// Parses a multipart/mixed response body from from the position defined by the context.
        /// </summary>
        /// <param name="text" type="String" optional="false">Body of the multipart/mixed response.</param>
        /// <param name="context">Context used for parsing.</param>
        /// <returns>Array of objects representing the individual responses.</returns>

        var delimiter = "--" + currentBoundary(context);

        // Move beyond the delimiter and read the complete batch
        readTo(text, context, delimiter);

        // Ignore the incoming line
        readLine(text, context);

        // Read the batch parts
        var responses = [];
        var partEnd;

        while (partEnd !== "--" && context.position < text.length) {
            var partHeaders = readHeaders(text, context);
            var partContentType = contentType(partHeaders["Content-Type"]);

            var changeResponses;
            if (partContentType && partContentType.mediaType === batchMediaType) {
                context.boundaries.push(partContentType.properties["boundary"]);
                try {
                    changeResponses = readBatch(text, context);
                } catch (e) {
                    e.response = readResponse(text, context, delimiter);
                    changeResponses = [e];
                }
                responses.push({ __changeResponses: changeResponses });
                context.boundaries.pop();
                readTo(text, context, "--" + currentBoundary(context));
            } else {
                if (!partContentType || partContentType.mediaType !== "application/http") {
                    throw { message: "invalid MIME part type " };
                }
                // Skip empty line
                readLine(text, context);
                // Read the response
                var response = readResponse(text, context, delimiter);
                try {
                    if (response.statusCode >= 200 && response.statusCode <= 299) {
                        partHandler(context.handlerContext).read(response, context.handlerContext);
                    } else {
                        // Keep track of failed responses and continue processing the batch.
                        response = { message: "HTTP request failed", response: response };
                    }
                } catch (e) {
                    response = e;
                }

                responses.push(response);
            }

            partEnd = text.substr(context.position, 2);

            // Ignore the incoming line.
            readLine(text, context);
        }
        return responses;
    };