feat: add ziglang-docs-epub tool

1 files changed, 30 insertions, 0 deletions

diff --git a/src/fetch.zig b/src/fetch.zig
new file mode 100644
index 0000000..706a435
--- /dev/null
+++ b/src/fetch.zig
@@ -0,0 +1,30 @@
+//! Thin HTTP GET helper over std.http.Client.
+
+const std = @import("std");
+const assert = std.debug.assert;
+
+/// Largest response body we accept (the docs page is ~1 MB; allow generous slack).
+pub const max_body = 32 * 1024 * 1024;
+
+pub const Error = error{ HttpStatus, BodyTooLarge } || std.mem.Allocator.Error;
+
+/// GET `url` and return the response body. Caller owns the returned slice.
+/// Returns an error on any non-200 status so callers can skip that version.
+pub fn get(allocator: std.mem.Allocator, client: *std.http.Client, url: []const u8) ![]u8 {
+    assert(url.len > 0);
+
+    var body: std.Io.Writer.Allocating = .init(allocator);
+    defer body.deinit();
+
+    const result = try client.fetch(.{
+        .location = .{ .url = url },
+        .response_writer = &body.writer,
+    });
+
+    if (result.status != .ok) return Error.HttpStatus;
+    if (body.writer.end > max_body) return Error.BodyTooLarge;
+
+    const out = try body.toOwnedSlice();
+    assert(out.len > 0);
+    return out;
+}