1 files changed, 138 insertions, 0 deletions
diff --git a/t/helper/test-pkt-line.c b/t/helper/test-pkt-line.c
new file mode 100644
index 0000000..f4d134a
--- /dev/null
+++ b/t/helper/test-pkt-line.c
@@ -0,0 +1,138 @@
+#include "git-compat-util.h"
+#include "test-tool.h"
+#include "pkt-line.h"
+#include "write-or-die.h"
+
+static void pack_line(const char *line)
+{
+	if (!strcmp(line, "0000") || !strcmp(line, "0000\n"))
+		packet_flush(1);
+	else if (!strcmp(line, "0001") || !strcmp(line, "0001\n"))
+		packet_delim(1);
+	else
+		packet_write_fmt(1, "%s", line);
+}
+
+static void pack(int argc, const char **argv)
+{
+	if (argc) { /* read from argv */
+		int i;
+		for (i = 0; i < argc; i++)
+			pack_line(argv[i]);
+	} else { /* read from stdin */
+		char line[LARGE_PACKET_MAX];
+		while (fgets(line, sizeof(line), stdin)) {
+			pack_line(line);
+		}
+	}
+}
+
+static void pack_raw_stdin(void)
+{
+	struct strbuf sb = STRBUF_INIT;
+
+	if (strbuf_read(&sb, 0, 0) < 0)
+		die_errno("failed to read from stdin");
+	packet_write(1, sb.buf, sb.len);
+	strbuf_release(&sb);
+}
+
+static void unpack(void)
+{
+	struct packet_reader reader;
+	packet_reader_init(&reader, 0, NULL, 0,
+			   PACKET_READ_GENTLE_ON_EOF |
+			   PACKET_READ_CHOMP_NEWLINE);
+
+	while (packet_reader_read(&reader) != PACKET_READ_EOF) {
+		switch (reader.status) {
+		case PACKET_READ_EOF:
+			break;
+		case PACKET_READ_NORMAL:
+			printf("%s\n", reader.line);
+			break;
+		case PACKET_READ_FLUSH:
+			printf("0000\n");
+			break;
+		case PACKET_READ_DELIM:
+			printf("0001\n");
+			break;
+		case PACKET_READ_RESPONSE_END:
+			printf("0002\n");
+			break;
+		}
+	}
+}
+
+static void unpack_sideband(void)
+{
+	struct packet_reader reader;
+	packet_reader_init(&reader, 0, NULL, 0,
+			   PACKET_READ_GENTLE_ON_EOF |
+			   PACKET_READ_CHOMP_NEWLINE);
+
+	while (packet_reader_read(&reader) != PACKET_READ_EOF) {
+		int band;
+		int fd;
+
+		switch (reader.status) {
+		case PACKET_READ_EOF:
+			break;
+		case PACKET_READ_NORMAL:
+			band = reader.line[0] & 0xff;
+			if (band < 1 || band > 2)
+				continue; /* skip non-sideband packets */
+			fd = band;
+
+			write_or_die(fd, reader.line + 1, reader.pktlen - 1);
+			break;
+		case PACKET_READ_FLUSH:
+			return;
+		case PACKET_READ_DELIM:
+		case PACKET_READ_RESPONSE_END:
+			break;
+		}
+	}
+}
+
+static int send_split_sideband(void)
+{
+	const char *part1 = "Hello,";
+	const char *primary = "\001primary: regular output\n";
+	const char *part2 = " world!\n";
+
+	send_sideband(1, 2, part1, strlen(part1), LARGE_PACKET_MAX);
+	packet_write(1, primary, strlen(primary));
+	send_sideband(1, 2, part2, strlen(part2), LARGE_PACKET_MAX);
+	packet_response_end(1);
+
+	return 0;
+}
+
+static int receive_sideband(void)
+{
+	return recv_sideband("sideband", 0, 1);
+}
+
+int cmd__pkt_line(int argc, const char **argv)
+{
+	if (argc < 2)
+		die("too few arguments");
+
+	if (!strcmp(argv[1], "pack"))
+		pack(argc - 2, argv + 2);
+	else if (!strcmp(argv[1], "pack-raw-stdin"))
+		pack_raw_stdin();
+	else if (!strcmp(argv[1], "unpack"))
+		unpack();
+	else if (!strcmp(argv[1], "unpack-sideband"))
+		unpack_sideband();
+	else if (!strcmp(argv[1], "send-split-sideband"))
+		send_split_sideband();
+	else if (!strcmp(argv[1], "receive-sideband"))
+		receive_sideband();
+	else
+		die("invalid argument '%s'", argv[1]);
+
+	return 0;
+}