Thomas Heijligen has uploaded this change for review.
cli_classic: include a fallback inplementation of getopt.
Some systems [0] may not provide getopt and their gnu extensions. So
provide a fallback implementation. This is based on musl libc's code.
[0] DJGPP/DOS
Change-Id: I6ebbde075014e3b45b0f9e04b34b72aa969e1197
Signed-off-by: Thomas Heijligen <thomas.heijligen@secunet.com>
---
M cli_classic.c
A cli_getopt.c
A include/cli_classic.h
M meson.build
4 files changed, 294 insertions(+), 6 deletions(-)
git pull ssh://review.coreboot.org:29418/flashrom refs/changes/02/73102/1
diff --git a/cli_classic.c b/cli_classic.c
index df478be..ed37152 100644
--- a/cli_classic.c
+++ b/cli_classic.c
@@ -24,7 +24,7 @@
#include <string.h>
#include <stdbool.h>
#include <stdlib.h>
-#include <getopt.h>
+#include <cli_classic.h>
#include "flash.h"
#include "flashchips.h"
#include "fmap.h"
diff --git a/cli_getopt.c b/cli_getopt.c
new file mode 100644
index 0000000..7e53c49
--- /dev/null
+++ b/cli_getopt.c
@@ -0,0 +1,239 @@
+#include <unistd.h>
+#include <wchar.h>
+#include <string.h>
+#include <limits.h>
+#include <stdlib.h>
+#include "cli_classic.h"
+
+char *optarg;
+int optind=1, opterr=1, optopt, optpos;
+
+static void __getopt_msg(const char *a, const char *b, const char *c, size_t l)
+{
+#if 0
+ FILE *f = stderr;
+ b = __lctrans_cur(b);
+ FLOCK(f);
+ fputs(a, f)>=0
+ && fwrite(b, strlen(b), 1, f)
+ && fwrite(c, 1, l, f)==l
+ && putc('\n', f);
+ FUNLOCK(f);
+#endif
+}
+
+int getopt(int argc, char * const argv[], const char *optstring)
+{
+ int i;
+ wchar_t c, d;
+ int k, l;
+ char *optchar;
+
+ if (!optind) {
+ optind = 1;
+ optpos = 0;
+ }
+
+ if (optind >= argc || !argv[optind])
+ return -1;
+
+ if (argv[optind][0] != '-') {
+ if (optstring[0] == '-') {
+ optarg = argv[optind++];
+ return 1;
+ }
+ return -1;
+ }
+
+ if (!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;
+ optpos += k;
+
+ if (!argv[optind][optpos]) {
+ optind++;
+ optpos = 0;
+ }
+
+ if (optstring[0] == '-' || optstring[0] == '+')
+ optstring++;
+
+ i = 0;
+ d = 0;
+ do {
+ l = mbtowc(&d, optstring+i, MB_LEN_MAX);
+ if (l>0) i+=l; else i++;
+ } while (l && d != c);
+
+ if (d != c || c == ':') {
+ optopt = c;
+ if (optstring[0] != ':' && opterr)
+ __getopt_msg(argv[0], ": unrecognized option: ", optchar, k);
+ return '?';
+ }
+ if (optstring[i] == ':') {
+ optarg = 0;
+ if (optstring[i+1] != ':' || optpos) {
+ optarg = argv[optind++] + optpos;
+ optpos = 0;
+ }
+ if (optind > argc) {
+ optopt = c;
+ if (optstring[0] == ':') return ':';
+ if (opterr) __getopt_msg(argv[0],
+ ": option requires an argument: ",
+ optchar, k);
+ return '?';
+ }
+ }
+ return c;
+}
+
+
+
+static int __getopt_long_core(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx, int longonly)
+{
+ optarg = 0;
+ if (longopts && argv[optind][0] == '-' &&
+ ((longonly && argv[optind][1] && argv[optind][1] != '-') ||
+ (argv[optind][1] == '-' && argv[optind][2])))
+ {
+ int colon = optstring[optstring[0]=='+'||optstring[0]=='-']==':';
+ int i, cnt, match = 0;
+ char *arg = NULL, *opt, *start = argv[optind]+1;
+ for (cnt=i=0; longopts[i].name; i++) {
+ const char *name = longopts[i].name;
+ opt = start;
+ if (*opt == '-') opt++;
+ while (*opt && *opt != '=' && *opt == *name)
+ name++, opt++;
+ if (*opt && *opt != '=') continue;
+ arg = opt;
+ match = i;
+ if (!*name) {
+ cnt = 1;
+ break;
+ }
+ cnt++;
+ }
+ if (cnt==1 && longonly && arg-start == mblen(start, MB_LEN_MAX)) {
+ int l = arg-start;
+ for (i=0; optstring[i]; i++) {
+ int j;
+ for (j=0; j<l && start[j]==optstring[i+j]; j++);
+ if (j==l) {
+ cnt++;
+ break;
+ }
+ }
+ }
+ if (cnt==1) {
+ i = match;
+ opt = arg;
+ optind++;
+ if (*opt == '=') {
+ if (!longopts[i].has_arg) {
+ optopt = longopts[i].val;
+ if (colon || !opterr)
+ return '?';
+ __getopt_msg(argv[0],
+ ": option does not take an argument: ",
+ longopts[i].name,
+ strlen(longopts[i].name));
+ return '?';
+ }
+ optarg = opt+1;
+ } else if (longopts[i].has_arg == required_argument) {
+ if (!(optarg = argv[optind])) {
+ optopt = longopts[i].val;
+ if (colon) return ':';
+ if (!opterr) return '?';
+ __getopt_msg(argv[0],
+ ": option requires an argument: ",
+ longopts[i].name,
+ strlen(longopts[i].name));
+ return '?';
+ }
+ 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] == '-') {
+ optopt = 0;
+ if (!colon && opterr)
+ __getopt_msg(argv[0], cnt ?
+ ": option is ambiguous: " :
+ ": unrecognized option: ",
+ argv[optind]+2,
+ strlen(argv[optind]+2));
+ optind++;
+ return '?';
+ }
+ }
+ return getopt(argc, argv, optstring);
+}
+
+static void permute(char *const *argv, int dest, int src)
+{
+ char **av = (char **)argv;
+ char *tmp = av[src];
+ int i;
+ for (i=src; i>dest; i--)
+ av[i] = av[i-1];
+ av[dest] = tmp;
+}
+
+static int __getopt_long(int argc, char *const *argv, const char *optstring, const struct option *longopts, int *idx, int longonly)
+{
+ int ret, skipped, resumed;
+ if (!optind) {
+ optind = 1;
+ optpos = 0;
+ }
+
+ if (optind >= argc || !argv[optind]) return -1;
+ skipped = optind;
+ if (optstring[0] != '+' && optstring[0] != '-') {
+ int i;
+ for (i=optind; ; i++) {
+ if (i >= argc || !argv[i]) return -1;
+ if (argv[i][0] == '-' && argv[i][1]) break;
+ }
+ optind = i;
+ }
+ resumed = optind;
+ ret = __getopt_long_core(argc, argv, optstring, longopts, idx, longonly);
+ if (resumed > skipped) {
+ int i, cnt = optind-resumed;
+ for (i=0; i<cnt; i++)
+ permute(argv, skipped, optind-1);
+ optind = skipped + cnt;
+ }
+ return ret;
+}
+
+
+
+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);
+}
diff --git a/include/cli_classic.h b/include/cli_classic.h
new file mode 100644
index 0000000..1638783
--- /dev/null
+++ b/include/cli_classic.h
@@ -0,0 +1,29 @@
+#ifndef CLI_CLASSIC_H
+#define CLI_CLASSIC_H
+
+
+#if __has_include(<getopt.h>)
+#include <getopt.h>
+#else
+
+#define no_argument 0
+#define required_argument 1
+#define optional_argument 2
+
+extern char *optarg;
+extern int optind, opterr, optopt;
+
+struct option {
+ const char *name;
+ int has_arg;
+ int *flag;
+ int val;
+};
+
+int getopt (int argc, char *const *argv, const char *shortopts);
+int getopt_long (int argc, char *const *argv, const char *shortopts,
+ const struct option *longopts, int *longind);
+int getopt_long_only (int argc, char *const *argv, const char *shortopts,
+ const struct option *longopts, int *longind);
+#endif /* __has_include() */
+#endif /* CLI_CLASSIC_H */
diff --git a/meson.build b/meson.build
index a3f1d84..c5122d7 100644
--- a/meson.build
+++ b/meson.build
@@ -626,14 +626,19 @@
install_dir: join_paths(get_option('mandir'), 'man8'),
)
+cli_srcs = files(
+ 'cli_classic.c',
+ 'cli_common.c',
+ 'cli_output.c'
+)
+if not cc.has_function('getopt_long')
+ cli_srcs += files('cli_getopt.c')
+endif
+
if get_option('classic_cli').enabled() or get_option('classic_cli').auto() and not get_option('default_library') == 'shared'
classic_cli = executable(
'flashrom',
- files(
- 'cli_classic.c',
- 'cli_common.c',
- 'cli_output.c',
- ),
+ cli_srcs,
c_args : cargs,
include_directories : include_dir,
install : true,
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