function readBatch()

in lib/odata/batch.js [113:170]
43 lines of code
11 McCabe index (conditional complexity)

function readBatch(text, context) {
    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 = null;

    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;
}