#include <ctype.h>
#include <err.h>
#include <getopt.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#define SKIPWS(p) while (isspace((int)(*p))) p++
#define WS "\t\n "
int
main(int argc, char *argv[])
{
size_t len, lineno = 0;
char *line, *eptr, *longopt, *ptr, *optstring = NULL, *result = NULL;
char buf[1024];
char *args[128];
char arg[256];
int nargs = -1;
int c;
int nlongopts = 0;
int maxnlongopts = 0;
int *longopt_flags = NULL;
struct option *longopts = NULL;
while ((line = fparseln(stdin, &len, &lineno, NULL, 0)) != NULL) {
if (strncmp(line, "optstring:", 10) == 0) {
if (optstring)
free(optstring);
optstring = strtok(&line[11], WS);
if (optstring == NULL)
errx(1, "missing optstring at line %ld",
(unsigned long)lineno);
optstring = strdup(optstring);
} else if (strncmp(line, "longopts:", 9) == 0) {
if (longopts) {
int i;
for (i = 0; i < nlongopts; i++)
if (longopts[i].name != NULL)
free(__UNCONST(longopts[i].name));
free(longopts);
}
if (longopt_flags)
free(longopt_flags);
nlongopts = 0;
ptr = strtok(&line[10], WS);
if (ptr == NULL)
errx(1, "missing longopts at line %ld",
(unsigned long)lineno);
maxnlongopts = strtoul(ptr, &eptr, 10);
if (*eptr != '\0')
warnx("garbage in longopts at line %ld",
(unsigned long)lineno);
maxnlongopts++;
longopts =
(struct option *)calloc(sizeof(struct option),
maxnlongopts);
if (longopts == NULL)
err(1, "calloc");
longopt_flags = (int *)calloc(sizeof(int), maxnlongopts);
if (longopt_flags == NULL)
err(1, "calloc");
} else if (strncmp(line, "longopt:", 8) == 0) {
if (longopts == NULL)
errx(1, "longopt: without longopts at line %ld",
(unsigned long)lineno);
if (nlongopts >= maxnlongopts)
errx(1, "longopt: too many options at line %ld",
(unsigned long)lineno);
ptr = &line[9];
SKIPWS(ptr);
longopt = strsep(&ptr, ",");
if (longopt == NULL)
errx(1, "missing longopt at line %ld",
(unsigned long)lineno);
longopts[nlongopts].name = strdup(longopt);
SKIPWS(ptr);
longopt = strsep(&ptr, ",");
if (*longopt != '\0') {
if (strncmp(longopt, "0", 1) == 0 ||
strncmp(longopt, "no_argument", 2) == 0)
longopts[nlongopts].has_arg = no_argument;
else if (strncmp(longopt, "1", 1) == 0 ||
strncmp(longopt, "required_argument", 8) == 0)
longopts[nlongopts].has_arg = required_argument;
else if (strncmp(longopt, "2", 1) == 0 ||
strncmp(longopt, "optional_argument", 8) == 0)
longopts[nlongopts].has_arg = optional_argument;
else
errx(1, "unknown has_arg %s at line %ld",
longopt, (unsigned long)lineno);
}
SKIPWS(ptr);
longopt = strsep(&ptr, ",");
if (*longopt != '\0' &&
strncmp(longopt, "NULL", 4) != 0)
longopts[nlongopts].flag = &longopt_flags[nlongopts];
SKIPWS(ptr);
longopt = strsep(&ptr, ",");
if (*longopt == '\0')
errx(1, "missing val at line %ld",
(unsigned long)lineno);
if (*longopt != '\'') {
longopts[nlongopts].val =
(int)strtoul(longopt, &eptr, 10);
if (*eptr != '\0')
errx(1, "invalid val at line %ld",
(unsigned long)lineno);
} else
longopts[nlongopts].val = (int)longopt[1];
nlongopts++;
} else if (strncmp(line, "args:", 5) == 0) {
for (; nargs >= 0; nargs--) {
if (args[nargs] != NULL)
free(args[nargs]);
}
args[nargs = 0] = strtok(&line[6], WS);
if (args[nargs] == NULL)
errx(1, "Missing args");
args[nargs] = strdup(args[nargs]);
while ((args[++nargs] = strtok(NULL, WS)) != NULL)
args[nargs] = strdup(args[nargs]);
} else if (strncmp(line, "result:", 7) == 0) {
int li;
buf[0] = '\0';
optind = optreset = 1;
if (result)
free(result);
result = strtok(&line[8], WS);
if (result == NULL)
errx(1, "missing result at line %ld",
(unsigned long)lineno);
if (optstring == NULL)
errx(1, "result: without optstring");
if (longopts == NULL || nlongopts == 0)
errx(1, "result: without longopts");
result = strdup(result);
if (nargs == -1)
errx(1, "result: without args");
li = -2;
while ((c = getopt_long(nargs, args, optstring,
longopts, &li)) != -1) {
if (c == ':')
errx(1, "`:' found as argument char");
if (li == -2) {
ptr = strchr(optstring, c);
if (ptr == NULL) {
snprintf(arg, sizeof(arg),
"!%c,", c);
strcat(buf, arg);
continue;
}
if (ptr[1] != ':')
snprintf(arg, sizeof(arg),
"%c,", c);
else
snprintf(arg, sizeof(arg),
"%c=%s,", c, optarg);
} else {
switch (longopts[li].has_arg) {
case no_argument:
snprintf(arg, sizeof(arg), "-%s,",
longopts[li].name);
break;
case required_argument:
snprintf(arg, sizeof(arg),
"-%s=%s,",
longopts[li].name, optarg);
break;
case optional_argument:
snprintf(arg, sizeof(arg),
"-%s%s%s,",
longopts[li].name,
(optarg)? "=" : "",
(optarg)? optarg : "");
break;
default:
errx(1, "internal error");
}
}
strcat(buf, arg);
li = -2;
}
len = strlen(buf);
if (len > 0) {
buf[len - 1] = '|';
buf[len] = '\0';
} else {
buf[0] = '|';
buf[1] = '\0';
}
snprintf(arg, sizeof(arg), "%d", nargs - optind);
strcat(buf, arg);
if (strcmp(buf, result) != 0)
errx(1, "`%s' != `%s'", buf, result);
} else
errx(1, "unknown directive at line %ld",
(unsigned long)lineno);
free(line);
}
return 0;
}
