milestone 18: collapse duplicated infrastructure into shared listener core, crud list helper, resource shells, transport race, name and line helpers, ui modules

src/filter/manager.zig

@@ -1530,20 +1530,12 @@ fn destroySnapshot(gpa: Allocator, snapshot: *matcher.Snapshot) void {
 fn collectSample(r: *std.Io.Reader, w: *std.Io.Writer) error{ ReadFailed, WriteFailed }!void {
     var considered: usize = 0;
     while (considered < parsers.sample_lines) {
-        const raw = r.takeDelimiter('\n') catch |err| switch (err) {
-            // The stream is left unmodified here, so the line has to be stepped
-            // over or this loop never advances.
-            error.StreamTooLong => {
-                _ = r.discardDelimiterInclusive('\n') catch |discard_err| switch (discard_err) {
-                    error.EndOfStream => return,
-                    error.ReadFailed => return error.ReadFailed,
-                };
-                continue;
-            },
-            error.ReadFailed => return error.ReadFailed,
-        } orelse return;
+        const event = (try parsers.nextBoundedLine(r, compiler.max_line_len)) orelse return;
+        const raw = switch (event) {
+            .long_line => continue,
+            .line => |line| line,
+        };
 
-        if (raw.len > compiler.max_line_len) continue;
         const line = std.mem.trim(u8, raw, &std.ascii.whitespace);
         if (line.len == 0) continue;
         if (parsers.isComment(line)) continue;