From: Waldemar Kozaczuk <jwkozac...@gmail.com>
Committer: Nadav Har'El <n...@scylladb.com>
Branch: master
Move getopt* files to libc folder and convert to C++
Signed-off-by: Waldemar Kozaczuk <jwkozac...@gmail.com>
Message-Id: <20190501034939.12436-2-jwkozac...@gmail.com>
---
diff --git a/Makefile b/Makefile
--- a/Makefile
+++ b/Makefile
@@ -1329,8 +1329,8 @@ libc += misc/error.o
libc += misc/ffs.o
musl += misc/get_current_dir_name.o
libc += misc/gethostid.o
-musl += misc/getopt.o
-musl += misc/getopt_long.o
+libc += misc/getopt.o
+libc += misc/getopt_long.o
musl += misc/getsubopt.o
libc += misc/realpath.o
libc += misc/backtrace.o
diff --git a/libc/misc/getopt.cc b/libc/misc/getopt.cc
--- a/libc/misc/getopt.cc
+++ b/libc/misc/getopt.cc
@@ -0,0 +1,77 @@
+#include <unistd.h>
+#include <wchar.h>
+#include <string.h>
+#include <limits.h>
+#include <stdlib.h>
+#include <libc/libc.hh>
+
+extern "C" {
+
+char *optarg;
+int optind=1, opterr=1, optopt, __optpos, __optreset=0;
+
+#define optpos __optpos
+weak_alias(__optreset, optreset);
+
+int getopt(int argc, char * const argv[], const char *optstring)
+{
+ int i;
+ wchar_t c, d;
+ int k, l;
+ char *optchar;
+
+ if (!optind || __optreset) {
+ __optreset = 0;
+ __optpos = 0;
+ optind = 1;
+ }
+
+ if (optind >= argc || !argv[optind] || argv[optind][0] != '-' |
| !argv[optind][1])
+ return -1;
+ if (argv[optind][1] == '-' && !argv[optind][2])
+ return optind++, -1;
+
+ if (!optpos) optpos++;
+ if ((k = mbtowc(&c, argv[optind]+optpos, MB_LEN_MAX)) < 0) {
+ k = 1;
+ c = 0xfffd; /* replacement char */
+ }
+ optchar = argv[optind]+optpos;
+ optopt = c;
+ optpos += k;
+
+ if (!argv[optind][optpos]) {
+ optind++;
+ optpos = 0;
+ }
+
+ for (i=0; (l = mbtowc(&d, optstring+i, MB_LEN_MAX)) && d!=c;
i+=l>0?l:1);
+
+ if (d != c) {
+ if (optstring[0] != ':' && opterr) {
+ write(2, argv[0], strlen(argv[0]));
+ write(2, ": illegal option: ", 18);
+ write(2, optchar, k);
+ write(2, "\n", 1);
+ }
+ return '?';
+ }
+ if (optstring[i+1] == ':') {
+ if (optind >= argc) {
+ if (optstring[0] == ':') return ':';
+ if (opterr) {
+ write(2, argv[0], strlen(argv[0]));
+ write(2, ": option requires an argument: ", 31);
+ write(2, optchar, k);
+ write(2, "\n", 1);
+ }
+ return '?';
+ }
+ optarg = argv[optind++] + optpos;
+ optpos = 0;
+ }
+ return c;
+}
+
+weak_alias(getopt, __posix_getopt);
+}
diff --git a/libc/misc/getopt_long.cc b/libc/misc/getopt_long.cc
--- a/libc/misc/getopt_long.cc
+++ b/libc/misc/getopt_long.cc
@@ -0,0 +1,61 @@
+#include <stddef.h>
+#include <getopt.h>
+#include <stdio.h>
+
+extern "C" {
+
+extern int __optpos, __optreset;
+
+static int __getopt_long(int argc, char *const *argv, const char
*optstring, const struct option *longopts, int *idx, int longonly)
+{
+ if (!optind || __optreset) {
+ __optreset = 0;
+ __optpos = 0;
+ optind = 1;
+ }
+ if (optind >= argc || !argv[optind] || argv[optind][0] != '-') return
-1;
+ if ((longonly && argv[optind][1]) ||
+ (argv[optind][1] == '-' && argv[optind][2]))
+ {
+ int i;
+ for (i=0; longopts[i].name; i++) {
+ const char *name = longopts[i].name;
+ char *opt = argv[optind]+1;
+ if (*opt == '-') opt++;
+ for (; *name && *name == *opt; name++, opt++);
+ if (*name || (*opt && *opt != '=')) continue;
+ if (*opt == '=') {
+ if (!longopts[i].has_arg) continue;
+ optarg = opt+1;
+ } else {
+ if (longopts[i].has_arg == required_argument) {
+ if (!(optarg = argv[++optind]))
+ return ':';
+ } else optarg = NULL;
+ }
+ optind++;
+ if (idx) *idx = i;
+ if (longopts[i].flag) {
+ *longopts[i].flag = longopts[i].val;
+ return 0;
+ }
+ return longopts[i].val;
+ }
+ if (argv[optind][1] == '-') {
+ optind++;
+ return '?';
+ }
+ }
+ return getopt(argc, argv, optstring);
+}
+
+int getopt_long(int argc, char *const *argv, const char *optstring, const
struct option *longopts, int *idx)
+{
+ return __getopt_long(argc, argv, optstring, longopts, idx, 0);
+}
+
+int getopt_long_only(int argc, char *const *argv, const char *optstring,
const struct option *longopts, int *idx)
+{
+ return __getopt_long(argc, argv, optstring, longopts, idx, 1);
+}
+}
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