Yu Watanabe
53f5aa3fd2
musl's getopt_long() behaves something different in handling optional arguments: ``` $ journalctl _PID=1 _COMM=systemd --since 19:19:01 -n all --follow Failed to add match 'all': Invalid argument ``` This introduces getopt_long_fix() that reorders the passed arguments to make getopt_long() provided by musl works as what we expect. Also, musl's getopt() always behaves POSIXLY_CORRECT mode, and stops parsing arguments when a non-option string found. Let's always use getopt_long().
30 lines
1.2 KiB
C
30 lines
1.2 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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/* getopt() is provided both in getopt.h and unistd.h. Hence, we need to tentatively undefine it. */
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#undef getopt
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#include_next <getopt.h>
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/* musl's getopt() always behaves POSIXLY_CORRECT mode, and stops parsing arguments when a non-option string
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* found. Let's always use getopt_long(). */
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int getopt_fix(int argc, char * const *argv, const char *optstring);
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#define getopt(argc, argv, optstring) getopt_fix(argc, argv, optstring)
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/* musl's getopt_long() behaves something different in handling optional arguments.
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* ========
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* $ journalctl _PID=1 _COMM=systemd --since 19:19:01 -n all --follow
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* Failed to add match 'all': Invalid argument
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* ========
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* Here, we introduce getopt_long_fix() that reorders the passed arguments to make getopt_long() provided by
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* musl works as what we expect. */
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int getopt_long_fix(
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int argc,
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char * const *argv,
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const char *optstring,
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const struct option *longopts,
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int *longindex);
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#define getopt_long(argc, argv, optstring, longopts, longindex) \
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getopt_long_fix(argc, argv, optstring, longopts, longindex)
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