cpp-eansearch — EAN, GTIN, UPC and ISBN lookup

A C++ class for EAN, GTIN, UPC and ISBN lookup and validation using the API at ean-search.org.

Core implementation:

• Interface: eansearch.hpp — class and data structures
• Implementation: eansearch.cpp
• Example usage: see example.cpp
• Build on Linux: Makefile
• License: MIT

Primary classes and types

• EANSearch — main API class
• Product — basic product info
• ProductFull — product with added Google product category (inherits Product)
• ProductList — typedef for product lists

Main public methods on EANSearch

• EANSearch::BarcodeLookup
  search by a single EAN, GTIN, UPC or ISBN-13 code
• EANSearch::IsbnLookup
  search by ISBN code (ISBN-10)
• EANSearch::VerifyChecksum
  verify whether the checksum on any EAN, GTIN, UPC or ISBN-13 code is valid
• EANSearch::ProductSearch
  search the product database by product name (exact search)
• EANSearch::SimilarProductSearch
  search the product database for similar product names
• EANSearch::CategorySearch
  search the product database by product name, restricted by product category
• EANSearch::BarcodePrefixSearch
  search by the first digits of a barcode (prefix)
• EANSearch::IssuingCountryLookup
  check the issuing country of any EAN, GTIN, UPC or ISBN-13 code
• EANSearch::BarcodeImage
  generate a PNG image of the barcode (base64 encoded)

Sample code

 ...
 auto * eansearch = new EANSearch(token);
 ProductFull * p = eansearch->BarcodeLookup("5099750442227");
 if (p) {
 	cout << ean << " is " << p->name << endl;
 }
 ...
 ProductList * pl = eansearch->ProductSearch("Bananaboat");
 ...

See example.cpp for more details on all API functions.

Compiling

To compile, you need Boost and OpenSSL installed.

On Debian and Ubuntu:

 sudo apt install libssl-dev boost-dev

On Windows with vcpgk

 vcpkg install openssl boost --triplet x32-windows

Build and run the example (Linux):

c++ example.o -o example -lssl -lcrypto
./example

Please note that the library is "header-only", so all code is included in the one heade file, but you will have to link with OpenSSL (for the https support).

Running the example

Export your API token as an environment variable:

export EAN_SEARCH_API_TOKEN=your_token_here