Rich Felker
5ce3737931
libc.h was intended to be a header for access to global libc state and related interfaces, but ended up included all over the place because it was the way to get the weak_alias macro. most of the inclusions removed here are places where weak_alias was needed. a few were recently introduced for hidden. some go all the way back to when libc.h defined CANCELPT_BEGIN and _END, and all (wrongly implemented) cancellation points had to include it. remaining spurious users are mostly callers of the LOCK/UNLOCK macros and files that use the LFS64 macro to define the awful *64 aliases. in a few places, new inclusion of libc.h is added because several internal headers no longer implicitly include libc.h. declarations for __lockfile and __unlockfile are moved from libc.h to stdio_impl.h so that the latter does not need libc.h. putting them in libc.h made no sense at all, since the macros in stdio_impl.h are needed to use them correctly anyway.
105 lines
1.9 KiB
C
105 lines
1.9 KiB
C
#include <unistd.h>
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#include <wchar.h>
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#include <string.h>
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#include <limits.h>
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#include <stdlib.h>
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#include "locale_impl.h"
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#include "stdio_impl.h"
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char *optarg;
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int optind=1, opterr=1, optopt, __optpos, __optreset=0;
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#define optpos __optpos
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weak_alias(__optreset, optreset);
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void __getopt_msg(const char *a, const char *b, const char *c, size_t l)
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{
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FILE *f = stderr;
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b = __lctrans_cur(b);
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FLOCK(f);
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fputs(a, f)>=0
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&& fwrite(b, strlen(b), 1, f)
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&& fwrite(c, 1, l, f)==l
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&& putc('\n', f);
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FUNLOCK(f);
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}
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int getopt(int argc, char * const argv[], const char *optstring)
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{
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int i;
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wchar_t c, d;
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int k, l;
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char *optchar;
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if (!optind || __optreset) {
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__optreset = 0;
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__optpos = 0;
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optind = 1;
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}
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if (optind >= argc || !argv[optind])
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return -1;
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if (argv[optind][0] != '-') {
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if (optstring[0] == '-') {
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optarg = argv[optind++];
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return 1;
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}
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return -1;
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}
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if (!argv[optind][1])
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return -1;
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if (argv[optind][1] == '-' && !argv[optind][2])
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return optind++, -1;
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if (!optpos) optpos++;
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if ((k = mbtowc(&c, argv[optind]+optpos, MB_LEN_MAX)) < 0) {
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k = 1;
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c = 0xfffd; /* replacement char */
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}
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optchar = argv[optind]+optpos;
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optpos += k;
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if (!argv[optind][optpos]) {
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optind++;
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optpos = 0;
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}
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if (optstring[0] == '-' || optstring[0] == '+')
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optstring++;
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i = 0;
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d = 0;
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do {
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l = mbtowc(&d, optstring+i, MB_LEN_MAX);
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if (l>0) i+=l; else i++;
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} while (l && d != c);
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if (d != c || c == ':') {
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optopt = c;
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if (optstring[0] != ':' && opterr)
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__getopt_msg(argv[0], ": unrecognized option: ", optchar, k);
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return '?';
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}
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if (optstring[i] == ':') {
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optarg = 0;
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if (optstring[i+1] != ':' || optpos) {
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optarg = argv[optind++] + optpos;
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optpos = 0;
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}
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if (optind > argc) {
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optopt = c;
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if (optstring[0] == ':') return ':';
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if (opterr) __getopt_msg(argv[0],
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": option requires an argument: ",
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optchar, k);
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return '?';
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}
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}
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return c;
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}
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weak_alias(getopt, __posix_getopt);
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