annotate toys/printenv.c @ 562:4d802d438983

Match uint64_t with PRIu64 to avoid warnings on 64 bit builds.
author Rob Landley <rob@landley.net>
date Sat, 14 Apr 2012 21:27:00 -0500
parents e0eed40f4ab1
children
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1 /* vi: set sw=4 ts=4:
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2 *
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3 * printenv.c - Print environment variables.
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4 *
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5 * Copyright 2012 Georgi Chorbadzhiyski <georgi@unixsol.org>
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6 *
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7
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8 USE_PRINTENV(NEWTOY(printenv, "0(null)", TOYFLAG_USR|TOYFLAG_BIN))
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9
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10 config PRINTENV
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11 bool "printenv"
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12 default y
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13 help
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14 usage: printenv [-0] [env_var...]
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15
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16 Print environment variables.
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17
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18 -0 Use \0 as delimiter instead of \n
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19 */
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20
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21 #include "toys.h"
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22
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23 extern char **environ;
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24
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25 void printenv_main(void)
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26 {
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27 char **env, **var = toys.optargs;
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28 char delim = '\n';
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29
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30 if (toys.optflags) delim = 0;
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31
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32 do {
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33 int catch = 0, len = *var ? strlen(*var) : 0;
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34
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35 for (env = environ; *env; env++) {
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36 char *out = *env;
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37 if (*var) {
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38 if (!strncmp(out, *var, len) && out[len] == '=')
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39 out += len +1;
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40 else continue;
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41 }
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42 xprintf("%s%c", out, delim);
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43 catch++;
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44 }
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45 if (*var && !catch) toys.exitval = 1;
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46 } while (*var && *(++var));
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47 }