Zig

Execute an FTP Upload Plan

Demonstrates the Chilkat Ftp2.PutPlan method, which executes a previously created upload plan. The first argument is the plan text and the second is the local path of a completion log that records each successful operation.

Note: The local paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: The completion log is what makes plan execution resumable: each successful upload is recorded, so if a run is interrupted, re-executing the same plan skips the operations already logged and continues where it left off — invaluable for a large transfer over a flaky connection. The plan's stored absolute remote paths are used regardless of the current remote directory, so execution is independent of session state.

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

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

    // Demonstrates the Ftp2.PutPlan method, which executes a previously created upload plan.  The 1st
    // argument is the plan text and the 2nd is the local path of a completion log.

    const ftp = try chilkat.Ftp2.init();
    defer ftp.deinit();

    ftp.setHostname("ftp.example.com");
    ftp.setUsername("myFtpLogin");

    // Normally you would not hard-code the password in source.  You should instead obtain it
    // from an interactive prompt, environment variable, or a secrets vault.
    ftp.setPassword("myPassword");

    ftp.connect() catch {
        std.debug.print("{s}\n", .{try ftp.getLastErrorText(alloc)});
        return;
    };

    ftp.changeRemoteDir("public_html") catch {
        std.debug.print("{s}\n", .{try ftp.getLastErrorText(alloc)});
        return;
    };

    // Load a plan that was previously created with CreatePlan.
    const sb_plan = try chilkat.StringBuilder.init();
    defer sb_plan.deinit();
    sb_plan.loadFile("qa_output/upload_plan.txt", "utf-8") catch {
        std.debug.print("{s}\n", .{try sb_plan.getLastErrorText(alloc)});
        return;
    };

    const plan = try sb_plan.getAsString(alloc);

    // Execute the plan.  Each successful operation is recorded in the completion log, which lets an
    // interrupted run be resumed without repeating completed uploads.  The plan uses its stored
    // absolute remote paths even if the current remote directory has changed.
    ftp.putPlan(plan, "qa_output/upload_done.log") catch {
        std.debug.print("{s}\n", .{try ftp.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("Upload plan executed.\n", .{});

    ftp.disconnect() catch {
        std.debug.print("{s}\n", .{try ftp.getLastErrorText(alloc)});
        return;
    };
}