Cloud Document AI API C++ Client Library

An idiomatic C++ client library for the Cloud Document AI API, a service that uses machine learning on a scalable cloud-based platform to help your organization efficiently scan, analyze, and understand documents.

While this library is GA, please note Google Cloud C++ client libraries do not follow Semantic Versioning.

Quickstart

The following shows the code that you'll run in the google/cloud/documentai/quickstart/ directory, which should give you a taste of the Cloud Document AI API C++ client library API.

#include "google/cloud/documentai/v1/document_processor_client.h" #include <fstream> #include <iostream> int main(int argc, char* argv[]) try { if (argc != 5) { std::cerr << "Usage: " << argv[0] << " project-id location-id processor-id filename (PDF only)\n"; return 1; } std::string const location = argv[2]; if (location != "us" && location != "eu") { std::cerr << "location-id must be either 'us' or 'eu'\n"; return 1; } namespace documentai = ::google::cloud::documentai_v1; auto client = documentai::DocumentProcessorServiceClient( documentai::MakeDocumentProcessorServiceConnection(location)); auto const resource = std::string{"projects/"} + argv[1] + "/locations/" + location + "/processors/" + argv[3]; google::cloud::documentai::v1::ProcessRequest req; req.set_name(resource); req.set_skip_human_review(true); auto& doc = *req.mutable_raw_document(); doc.set_mime_type("application/pdf"); std::ifstream is(argv[4]); doc.set_content(std::string{std::istreambuf_iterator<char>(is), {}}); auto resp = client.ProcessDocument(std::move(req)); if (!resp) throw std::move(resp).status(); std::cout << resp->document().text() << "\n"; return 0; } catch (google::cloud::Status const& status) { std::cerr << "google::cloud::Status thrown: " << status << "\n"; return 1; }

Main classes

The main class in this library is documentai_v1::DocumentProcessorServiceClient. All RPCs are exposed as member functions of this class. Other classes provide helpers, configuration parameters, and infrastructure to mock documentai_v1::DocumentProcessorServiceClient when testing your application.

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