Zig
Example: Http.ExtractMetaRefreshUrl method

Demonstrates the ExtractMetaRefreshUrl method.
Chilkat Zig Downloads

Zig
const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

    const http = try chilkat.Http.init();
    defer http.deinit();

    // Sample HTML with a META refresh.

    // <!DOCTYPE html>
    // <html lang="en">
    // <head>
    //   <meta charset="utf-8" />
    //   <meta http-equiv="refresh" content="5; url=https://example.com" />
    //   <title>Meta Refresh Redirect</title>
    // </head>
    // <body>
    //   <p>Redirecting to example.com in 5 seconds�</p>
    // </body>
    // </html>

    const sb = try chilkat.StringBuilder.init();
    defer sb.deinit();
    const b_crlf = true;
    sb.appendLine("<!DOCTYPE html>", b_crlf) catch {};
    sb.appendLine("<html lang=\"en\">", b_crlf) catch {};
    sb.appendLine("<head>", b_crlf) catch {};
    sb.appendLine("  <meta charset=\"utf-8\" />", b_crlf) catch {};
    sb.appendLine("  <meta http-equiv=\"refresh\" content=\"5; url=https://example.com\" />", b_crlf) catch {};
    sb.appendLine("  <title>Meta Refresh Redirect</title>", b_crlf) catch {};
    sb.appendLine("</head>", b_crlf) catch {};
    sb.appendLine("<body>", b_crlf) catch {};
    sb.appendLine("  <p>Redirecting to example.com in 5 seconds�</p>", b_crlf) catch {};
    sb.appendLine("</body>", b_crlf) catch {};
    sb.appendLine("</html>", b_crlf) catch {};

    const url = http.extractMetaRefreshUrl(alloc, try sb.getAsString(alloc)) catch "";
    if (!http.getLastMethodSuccess()) {
        std.debug.print("The HTML has no META refresh tag.\n", .{});
    } else {
        std.debug.print("META refresh URL: {s}\n", .{url});
    }
}