Curl

#import "Curl";

Bindings for the system libcurl, the C library for URL transfers (HTTP, SMTP, FTP and many more).

This module is the C API as it stands: curl_easy_init, curl_easy_setopt, curl_easy_perform and the rest keep their C names, arguments and results, with CURLcode and the option enums as Jai enums. Nothing is wrapped, so the C rules apply: a handle from curl_easy_init is released with curl_easy_cleanup, strings handed to libcurl must be NUL-terminated (temp_c_string), curl_global_init runs once per program before the first handle is made, and every transfer function blocks until the transfer is over unless the multi interface is used. Failure is a CURLcode other than .OK, and curl_easy_strerror turns it into text. The libcurl shared library has to be installed on the machine that runs the program; it is not part of the toolchain. Mail is built on this module, and Extensions/Http is the HTTP client that needs no C library.

curl_global_init(0);

easy := curl_easy_init();
assert(easy != null);
defer curl_easy_cleanup(easy);

curl_easy_setopt(easy, .URL, temp_c_string("https://example.com/"));
code := curl_easy_perform(easy);

if code != .OK print("transfer failed: %\n", to_string(curl_easy_strerror(code)));