+/* Licensed under GPLv3+ - see LICENSE file for details */
#include <ccan/opt/opt.h>
#include <string.h>
#include <errno.h>
-#include <getopt.h>
#include <stdlib.h>
#include <stdio.h>
#include <err.h>
#include "private.h"
struct opt_table *opt_table;
-unsigned int opt_count;
+unsigned int opt_count, opt_num_short, opt_num_short_arg, opt_num_long;
const char *opt_argv0;
+/* Returns string after first '-'. */
+static const char *first_name(const char *names, unsigned *len)
+{
+ *len = strcspn(names + 1, "|= ");
+ return names + 1;
+}
+
+static const char *next_name(const char *names, unsigned *len)
+{
+ names += *len;
+ if (names[0] == ' ' || names[0] == '=' || names[0] == '\0')
+ return NULL;
+ return first_name(names + 1, len);
+}
+
+static const char *first_opt(unsigned *i, unsigned *len)
+{
+ for (*i = 0; *i < opt_count; (*i)++) {
+ if (opt_table[*i].type == OPT_SUBTABLE)
+ continue;
+ return first_name(opt_table[*i].names, len);
+ }
+ return NULL;
+}
+
+static const char *next_opt(const char *p, unsigned *i, unsigned *len)
+{
+ for (; *i < opt_count; (*i)++) {
+ if (opt_table[*i].type == OPT_SUBTABLE)
+ continue;
+ if (!p)
+ return first_name(opt_table[*i].names, len);
+ p = next_name(p, len);
+ if (p)
+ return p;
+ }
+ return NULL;
+}
+
+const char *first_lopt(unsigned *i, unsigned *len)
+{
+ const char *p;
+ for (p = first_opt(i, len); p; p = next_opt(p, i, len)) {
+ if (p[0] == '-') {
+ /* Skip leading "-" */
+ (*len)--;
+ p++;
+ break;
+ }
+ }
+ return p;
+}
+
+const char *next_lopt(const char *p, unsigned *i, unsigned *len)
+{
+ for (p = next_opt(p, i, len); p; p = next_opt(p, i, len)) {
+ if (p[0] == '-') {
+ /* Skip leading "-" */
+ (*len)--;
+ p++;
+ break;
+ }
+ }
+ return p;
+}
+
+const char *first_sopt(unsigned *i)
+{
+ const char *p;
+ unsigned int len = 0 /* GCC bogus warning */;
+
+ for (p = first_opt(i, &len); p; p = next_opt(p, i, &len)) {
+ if (p[0] != '-')
+ break;
+ }
+ return p;
+}
+
+const char *next_sopt(const char *p, unsigned *i)
+{
+ unsigned int len = 1;
+ for (p = next_opt(p, i, &len); p; p = next_opt(p, i, &len)) {
+ if (p[0] != '-')
+ break;
+ }
+ return p;
+}
+
static void check_opt(const struct opt_table *entry)
{
- assert(entry->flags == OPT_HASARG || entry->flags == OPT_NOARG);
- assert(entry->shortopt || entry->longopt);
- assert(entry->shortopt != ':');
- assert(entry->shortopt != '?' || entry->flags == OPT_NOARG);
+ const char *p;
+ unsigned len;
+
+ if (entry->type != OPT_HASARG && entry->type != OPT_NOARG)
+ errx(1, "Option %s: unknown entry type %u",
+ entry->names, entry->type);
+
+ if (!entry->desc)
+ errx(1, "Option %s: description cannot be NULL", entry->names);
+
+
+ if (entry->names[0] != '-')
+ errx(1, "Option %s: does not begin with '-'", entry->names);
+
+ for (p = first_name(entry->names, &len); p; p = next_name(p, &len)) {
+ if (*p == '-') {
+ if (len == 1)
+ errx(1, "Option %s: invalid long option '--'",
+ entry->names);
+ opt_num_long++;
+ } else {
+ if (len != 1)
+ errx(1, "Option %s: invalid short option"
+ " '%.*s'", entry->names, len+1, p-1);
+ opt_num_short++;
+ if (entry->type == OPT_HASARG)
+ opt_num_short_arg++;
+ }
+ /* Don't document args unless there are some. */
+ if (entry->type == OPT_NOARG) {
+ if (p[len] == ' ' || p[len] == '=')
+ errx(1, "Option %s: does not take arguments"
+ " '%s'", entry->names, p+len+1);
+ }
+ }
}
static void add_opt(const struct opt_table *entry)
opt_table[opt_count++] = *entry;
}
-void _opt_register(const char *longopt, char shortopt, enum opt_flags flags,
+void _opt_register(const char *names, enum opt_type type,
char *(*cb)(void *arg),
char *(*cb_arg)(const char *optarg, void *arg),
- void *arg, const char *desc)
+ void (*show)(char buf[OPT_SHOW_LEN], const void *arg),
+ const void *arg, const char *desc)
{
struct opt_table opt;
- opt.longopt = longopt;
- opt.shortopt = shortopt;
- opt.flags = flags;
+ opt.names = names;
+ opt.type = type;
opt.cb = cb;
opt.cb_arg = cb_arg;
- opt.arg = arg;
+ opt.show = show;
+ opt.u.carg = arg;
opt.desc = desc;
check_opt(&opt);
add_opt(&opt);
struct opt_table heading = OPT_SUBTABLE(NULL, desc);
add_opt(&heading);
}
- for (i = 0; entry[i].flags != OPT_END; i++) {
- if (entry[i].flags == OPT_SUBTABLE)
+ for (i = 0; entry[i].type != OPT_END; i++) {
+ if (entry[i].type == OPT_SUBTABLE)
opt_register_table(subtable_of(&entry[i]),
entry[i].desc);
else {
}
/* We store the table length in arg ptr. */
if (desc)
- opt_table[start].arg = (void *)(intptr_t)(opt_count - start);
-}
-
-static char *make_optstring(void)
-{
- /* Worst case, each one is ":x:", plus nul term. */
- char *str = malloc(1 + opt_count * 2 + 1);
- unsigned int num, i;
-
- /* This tells getopt_long we want a ':' returned for missing arg. */
- str[0] = ':';
- num = 1;
- for (i = 0; i < opt_count; i++) {
- if (!opt_table[i].shortopt)
- continue;
- str[num++] = opt_table[i].shortopt;
- if (opt_table[i].flags == OPT_HASARG)
- str[num++] = ':';
- }
- str[num] = '\0';
- return str;
+ opt_table[start].u.tlen = (opt_count - start);
}
-static struct option *make_options(void)
+/* Parse your arguments. */
+bool opt_parse(int *argc, char *argv[], void (*errlog)(const char *fmt, ...))
{
- struct option *options = malloc(sizeof(*options) * (opt_count + 1));
- unsigned int i, num;
-
- for (num = i = 0; i < opt_count; i++) {
- if (!opt_table[i].longopt)
- continue;
- options[num].name = opt_table[i].longopt;
- options[num].has_arg = (opt_table[i].flags == OPT_HASARG);
- options[num].flag = NULL;
- options[num].val = 0;
- num++;
- }
- memset(&options[num], 0, sizeof(options[num]));
- return options;
-}
+ int ret;
+ unsigned offset = 0;
-static struct opt_table *find_short(char shortopt)
-{
- unsigned int i;
- for (i = 0; i < opt_count; i++) {
- if (opt_table[i].shortopt == shortopt)
- return &opt_table[i];
- }
- abort();
-}
+ /* This helps opt_usage. */
+ opt_argv0 = argv[0];
-/* We want the index'th long entry. */
-static struct opt_table *find_long(int index)
-{
- unsigned int i;
- for (i = 0; i < opt_count; i++) {
- if (!opt_table[i].longopt)
- continue;
- if (index == 0)
- return &opt_table[i];
- index--;
- }
- abort();
-}
+ while ((ret = parse_one(argc, argv, &offset, errlog)) == 1);
-/* glibc does this as:
-/tmp/opt-example: invalid option -- 'x'
-/tmp/opt-example: unrecognized option '--long'
-/tmp/opt-example: option '--someflag' doesn't allow an argument
-/tmp/opt-example: option '--s' is ambiguous
-/tmp/opt-example: option requires an argument -- 's'
-*/
-static void parse_fail(void (*errlog)(const char *fmt, ...),
- char shortopt, const char *longopt, const char *problem)
-{
- if (shortopt)
- errlog("%s: -%c: %s", opt_argv0, shortopt, problem);
- else
- errlog("%s: --%s: %s", opt_argv0, longopt, problem);
+ /* parse_one returns 0 on finish, -1 on error */
+ return (ret == 0);
}
-void dump_optstate(void);
-void dump_optstate(void)
+void opt_free_table(void)
{
- printf("opterr = %i, optind = %i, optopt = %i, optarg = %s\n",
- opterr, optind, optopt, optarg);
+ free(opt_table);
+ opt_table=0;
}
-/* Parse your arguments. */
-bool opt_parse(int *argc, char *argv[], void (*errlog)(const char *fmt, ...))
+void opt_log_stderr(const char *fmt, ...)
{
- char *optstring = make_optstring();
- struct option *options = make_options();
- int ret, longidx = 0;
- struct opt_table *e;
-
- /* We will do our own error reporting. */
- opterr = 0;
- opt_argv0 = argv[0];
-
- /* Reset in case we're called more than once. */
- optopt = 0;
- optind = 1;
- while ((ret = getopt_long(*argc, argv, optstring, options, &longidx))
- != -1) {
- char *problem;
- bool missing = false;
-
- /* optopt is 0 if it's an unknown long option, *or* if
- * -? is a valid short option. */
- if (ret == '?') {
- if (optopt || strncmp(argv[optind-1], "--", 2) == 0) {
- parse_fail(errlog, optopt, argv[optind-1]+2,
- "unrecognized option");
- break;
- }
- } else if (ret == ':') {
- missing = true;
- ret = optopt;
- }
-
- if (ret != 0)
- e = find_short(ret);
- else
- e = find_long(longidx);
-
- /* Missing argument */
- if (missing) {
- parse_fail(errlog, e->shortopt, e->longopt,
- "option requires an argument");
- break;
- }
-
- if (e->flags == OPT_HASARG)
- problem = e->cb_arg(optarg, e->arg);
- else
- problem = e->cb(e->arg);
-
- if (problem) {
- parse_fail(errlog, e->shortopt, e->longopt,
- problem);
- free(problem);
- break;
- }
- }
- free(optstring);
- free(options);
- if (ret != -1)
- return false;
-
- /* We hide everything but remaining arguments. */
- memmove(&argv[1], &argv[optind], sizeof(argv[1]) * (*argc-optind+1));
- *argc -= optind - 1;
+ va_list ap;
- return ret == -1 ? true : false;
+ va_start(ap, fmt);
+ vfprintf(stderr, fmt, ap);
+ fprintf(stderr, "\n");
+ va_end(ap);
}
-void opt_log_stderr(const char *fmt, ...)
+void opt_log_stderr_exit(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
+ fprintf(stderr, "\n");
va_end(ap);
+ exit(1);
}
char *opt_invalid_argument(const char *arg)
projects / ccan / blobdiff