t/helper/test-pkt-line.c

   1 #include "cache.h"
   2 #include "test-tool.h"
   3 #include "pkt-line.h"
   4
   5 static void pack_line(const char *line)
   6 {
   7         if (!strcmp(line, "0000") || !strcmp(line, "0000\n"))
   8                 packet_flush(1);
   9         else if (!strcmp(line, "0001") || !strcmp(line, "0001\n"))
  10                 packet_delim(1);
  11         else
  12                 packet_write_fmt(1, "%s", line);
  13 }
  14
  15 static void pack(int argc, const char **argv)
  16 {
  17         if (argc) { /* read from argv */
  18                 int i;
  19                 for (i = 0; i < argc; i++)
  20                         pack_line(argv[i]);
  21         } else { /* read from stdin */
  22                 char line[LARGE_PACKET_MAX];
  23                 while (fgets(line, sizeof(line), stdin)) {
  24                         pack_line(line);
  25                 }
  26         }
  27 }
  28
  29 static void unpack(void)
  30 {
  31         struct packet_reader reader;
  32         packet_reader_init(&reader, 0, NULL, 0,
  33                            PACKET_READ_GENTLE_ON_EOF |
  34                            PACKET_READ_CHOMP_NEWLINE);
  35
  36         while (packet_reader_read(&reader) != PACKET_READ_EOF) {
  37                 switch (reader.status) {
  38                 case PACKET_READ_EOF:
  39                         break;
  40                 case PACKET_READ_NORMAL:
  41                         printf("%s\n", reader.line);
  42                         break;
  43                 case PACKET_READ_FLUSH:
  44                         printf("0000\n");
  45                         break;
  46                 case PACKET_READ_DELIM:
  47                         printf("0001\n");
  48                         break;
  49                 }
  50         }
  51 }
  52
  53 static void unpack_sideband(void)
  54 {
  55         struct packet_reader reader;
  56         packet_reader_init(&reader, 0, NULL, 0,
  57                            PACKET_READ_GENTLE_ON_EOF |
  58                            PACKET_READ_CHOMP_NEWLINE);
  59
  60         while (packet_reader_read(&reader) != PACKET_READ_EOF) {
  61                 int band;
  62                 int fd;
  63
  64                 switch (reader.status) {
  65                 case PACKET_READ_EOF:
  66                         break;
  67                 case PACKET_READ_NORMAL:
  68                         band = reader.line[0] & 0xff;
  69                         if (band < 1 || band > 2)
  70                                 continue; /* skip non-sideband packets */
  71                         fd = band;
  72
  73                         write_or_die(fd, reader.line + 1, reader.pktlen - 1);
  74                         break;
  75                 case PACKET_READ_FLUSH:
  76                         return;
  77                 case PACKET_READ_DELIM:
  78                         break;
  79                 }
  80         }
  81 }
  82
  83 int cmd__pkt_line(int argc, const char **argv)
  84 {
  85         if (argc < 2)
  86                 die("too few arguments");
  87
  88         if (!strcmp(argv[1], "pack"))
  89                 pack(argc - 2, argv + 2);
  90         else if (!strcmp(argv[1], "unpack"))
  91                 unpack();
  92         else if (!strcmp(argv[1], "unpack-sideband"))
  93                 unpack_sideband();
  94         else
  95                 die("invalid argument '%s'", argv[1]);
  96
  97         return 0;
  98 }