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test-pkt-line: introduce a packet-line test helper 

Introduce a packet-line test helper which can either pack or unpack an
input stream into packet-lines and writes out the result to stdout.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Brandon Williams 2018-03-14 11:31:48 -07:00 committed by Junio C Hamano
parent 8f6982b4e1
commit 74e7002961
2 changed files with 65 additions and 0 deletions
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1
Makefile
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@ -666,6 +666,7 @@ TEST_PROGRAMS_NEED_X += test-mktemp
TEST_PROGRAMS_NEED_X += test-online-cpus
TEST_PROGRAMS_NEED_X += test-parse-options
TEST_PROGRAMS_NEED_X += test-path-utils
TEST_PROGRAMS_NEED_X += test-pkt-line
TEST_PROGRAMS_NEED_X += test-prio-queue
TEST_PROGRAMS_NEED_X += test-read-cache
TEST_PROGRAMS_NEED_X += test-write-cache

64
t/helper/test-pkt-line.c Normal file
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@ -0,0 +1,64 @@
#include "pkt-line.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 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;
}
}
}
int cmd_main(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], "unpack"))
unpack();
else
die("invalid argument '%s'", argv[1]);
return 0;
}