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1 | /* vi: set sw=4 ts=4: */
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2 | /*
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3 | * Monitor a pipe with a simple progress display.
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4 | *
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5 | * Copyright (C) 2003 by Rob Landley <rob@landley.net>, Joey Hess
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6 | *
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7 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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8 | */
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9 |
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10 | #include "libbb.h"
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11 |
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12 | #define PIPE_PROGRESS_SIZE 4096
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13 |
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14 | /* Read a block of data from stdin, write it to stdout.
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15 | * Activity is indicated by a '.' to stderr
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16 | */
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17 | int pipe_progress_main(int argc, char **argv);
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18 | int pipe_progress_main(int argc, char **argv)
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19 | {
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20 | RESERVE_CONFIG_BUFFER(buf, PIPE_PROGRESS_SIZE);
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21 | time_t t = time(NULL);
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22 | size_t len;
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23 |
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24 | while ((len = fread(buf, 1, PIPE_PROGRESS_SIZE, stdin)) > 0) {
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25 | time_t new_time = time(NULL);
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26 | if (new_time != t) {
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27 | t = new_time;
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28 | fputc('.', stderr);
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29 | }
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30 | fwrite(buf, len, 1, stdout);
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31 | }
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32 |
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33 | fputc('\n', stderr);
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34 |
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35 | if (ENABLE_FEATURE_CLEAN_UP)
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36 | RELEASE_CONFIG_BUFFER(buf);
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37 |
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38 | return 0;
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39 | }
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