Parsing without networking

[mcpierce]

Is there a way to invoke OPDSParser with the data from an OPDS feed without having to have Readium perform the network request? I have the content already received and would like to have Readium only parser the content for me. But I can't seem to find code that's not also making the initial request.

[mickael-menu]

Yes but you will need to decide first if it's an OPDS 1 or OPDS 2 feed. Then you can call the matching APIs on the OPDS1Parser and OPDS2Parser:

swift-toolkit/Sources/OPDS/OPDS2Parser.swift

Line 48 in b1698b5

public static func parse(jsonData: Data, url: URL, response: URLResponse) throws -> ParseData {

swift-toolkit/Sources/OPDS/OPDS1Parser.swift

Line 56 in b1698b5

public static func parse(xmlData: Data, url: URL, response: URLResponse) throws -> ParseData {

You can take a look at the response media type, or do a fallback like in the OPDSParser:

swift-toolkit/Sources/OPDS/OPDSParser.swift

Lines 30 to 36 in b1698b5

	// We try to parse as an OPDS v1 feed,
	// then, if it fails, we try as an OPDS v2 feed.
	if let parseData = try? OPDS1Parser.parse(xmlData: data, url: url, response: response) {
	completion(parseData, nil)
	} else if let parseData = try? OPDS2Parser.parse(jsonData: data, url: url, response: response) {
	completion(parseData, nil)
	} else {

The APIs ask for a URLResponse, but it's not used in practice; it's merely included in the returned ParseData. I'm unsure of its intended purpose. You can likely pass an empty URLResponse that you create yourself.

We plan to rework the OPDS APIs and models by the end of the year.