From 6799a1269e9d095dc6fd2d5354a05488668a76f2 Mon Sep 17 00:00:00 2001
From: Nathan Reiner <nathan@nathanreiner.xyz>
Date: Thu, 15 May 2025 07:55:49 +0200
Subject: cli: add summary at the end

---
 src/main.zig | 29 ++++++++++++++++++++++++-----
 1 file changed, 24 insertions(+), 5 deletions(-)

(limited to 'src')

diff --git a/src/main.zig b/src/main.zig
index f350154..8797b31 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -37,6 +37,19 @@ fn write_result(
 	}
 }
 
+fn write_summary(
+	writer: anytype,
+	is_tty: bool,
+	total: usize,
+	accepted: usize,
+) !void {
+	if (is_tty) {
+		try writer.print("finished {} ({} \x1b[32maccepted\x1b[0m {} \x1b[31mrejected\x1b[0m)\n", .{ total, accepted, total - accepted });
+	} else {
+		try writer.print("finished {} ({} accepted {} rejected)\n", .{ total, accepted, total - accepted });
+	}
+}
+
 fn recognize(args: *RecognizeArgs, allocator: std.mem.Allocator) !void {
 	const stdout = std.io.getStdOut();
 	var bufwriter = std.io.bufferedWriter(stdout.writer());
@@ -53,6 +66,7 @@ fn recognize(args: *RecognizeArgs, allocator: std.mem.Allocator) !void {
 
 	var read_arena = std.heap.ArenaAllocator.init(allocator);
 	defer read_arena.deinit();
+	var number_of_accepted: usize = 0;
 
 	while (try reader.readUntilDelimiterOrEofAlloc(
 			read_arena.allocator(),
@@ -62,19 +76,23 @@ fn recognize(args: *RecognizeArgs, allocator: std.mem.Allocator) !void {
 
 		const trimmed = std.mem.trim(u8, buffer, &std.ascii.whitespace);
 
+		const accepted = try recognizer.check(
+				&args.grammar,
+				trimmed,
+				allocator
+		);
+
 		try write_result(
 			writer,
 			stdout.isTty(),
 			args.input.name,
 			index,
 			trimmed,
-			try recognizer.check(
-				&args.grammar,
-				trimmed,
-				allocator
-		));
+			accepted,
+		);
 
 		index += 1;
+		number_of_accepted += if (accepted) 1 else 0;
 
 		if (args.input.file.isTty()) {
 			try bufwriter.flush();
@@ -82,6 +100,7 @@ fn recognize(args: *RecognizeArgs, allocator: std.mem.Allocator) !void {
 		}
 	}
 
+	try write_summary(writer, stdout.isTty(), index, number_of_accepted);
 	try bufwriter.flush();
 }
 
-- 
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