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heimdal/lib/roken/getarg.c
Love Hörnquist Åstrand 41a7bd3b69 Don't return void. 
git-svn-id: svn://svn.h5l.se/heimdal/trunk/heimdal@24621 ec53bebd-3082-4978-b11e-865c3cabbd6b
2009-02-04 22:11:21 +00:00

620 lines
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C
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/*
* Copyright (c) 1997 - 2002 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "roken.h"
#include "getarg.h"
#define ISFLAG(X) ((X).type == arg_flag || (X).type == arg_negative_flag)
static size_t
print_arg (char *string,
size_t len,
int mdoc,
int longp,
struct getargs *arg,
char *(i18n)(const char *))
{
const char *s;
*string = '\0';
if (ISFLAG(*arg) || (!longp && arg->type == arg_counter))
return 0;
if(mdoc){
if(longp)
strlcat(string, "= Ns", len);
strlcat(string, " Ar ", len);
} else {
if (longp)
strlcat (string, "=", len);
else
strlcat (string, " ", len);
}
if (arg->arg_help)
s = (*i18n)(arg->arg_help);
else if (arg->type == arg_integer || arg->type == arg_counter)
s = "integer";
else if (arg->type == arg_string)
s = "string";
else if (arg->type == arg_strings)
s = "strings";
else if (arg->type == arg_double)
s = "float";
else
s = "<undefined>";
strlcat(string, s, len);
return 1 + strlen(s);
}
static void
mandoc_template(struct getargs *args,
size_t num_args,
const char *progname,
const char *extra_string,
char *(i18n)(const char *))
{
int i;
char timestr[64], cmd[64];
char buf[128];
const char *p;
time_t t;
printf(".\\\" Things to fix:\n");
printf(".\\\" * correct section, and operating system\n");
printf(".\\\" * remove Op from mandatory flags\n");
printf(".\\\" * use better macros for arguments (like .Pa for files)\n");
printf(".\\\"\n");
t = time(NULL);
strftime(timestr, sizeof(timestr), "%B %e, %Y", localtime(&t));
printf(".Dd %s\n", timestr);
p = strrchr(progname, '/');
if(p) p++; else p = progname;
strlcpy(cmd, p, sizeof(cmd));
strupr(cmd);
printf(".Dt %s SECTION\n", cmd);
printf(".Os OPERATING_SYSTEM\n");
printf(".Sh NAME\n");
printf(".Nm %s\n", p);
printf(".Nd\n");
printf("in search of a description\n");
printf(".Sh SYNOPSIS\n");
printf(".Nm\n");
for(i = 0; i < num_args; i++){
/* we seem to hit a limit on number of arguments if doing
short and long flags with arguments -- split on two lines */
if(ISFLAG(args[i]) ||
args[i].short_name == 0 || args[i].long_name == NULL) {
printf(".Op ");
if(args[i].short_name) {
print_arg(buf, sizeof(buf), 1, 0, args + i, i18n);
printf("Fl %c%s", args[i].short_name, buf);
if(args[i].long_name)
printf(" | ");
}
if(args[i].long_name) {
print_arg(buf, sizeof(buf), 1, 1, args + i, i18n);
printf("Fl -%s%s%s",
args[i].type == arg_negative_flag ? "no-" : "",
args[i].long_name, buf);
}
printf("\n");
} else {
print_arg(buf, sizeof(buf), 1, 0, args + i, i18n);
printf(".Oo Fl %c%s \\*(Ba Xo\n", args[i].short_name, buf);
print_arg(buf, sizeof(buf), 1, 1, args + i, i18n);
printf(".Fl -%s%s\n.Xc\n.Oc\n", args[i].long_name, buf);
}
/*
if(args[i].type == arg_strings)
fprintf (stderr, "...");
*/
}
if (extra_string && *extra_string)
printf (".Ar %s\n", extra_string);
printf(".Sh DESCRIPTION\n");
printf("Supported options:\n");
printf(".Bl -tag -width Ds\n");
for(i = 0; i < num_args; i++){
printf(".It Xo\n");
if(args[i].short_name){
printf(".Fl %c", args[i].short_name);
print_arg(buf, sizeof(buf), 1, 0, args + i, i18n);
printf("%s", buf);
if(args[i].long_name)
printf(" ,");
printf("\n");
}
if(args[i].long_name){
printf(".Fl -%s%s",
args[i].type == arg_negative_flag ? "no-" : "",
args[i].long_name);
print_arg(buf, sizeof(buf), 1, 1, args + i, i18n);
printf("%s\n", buf);
}
printf(".Xc\n");
if(args[i].help)
printf("%s\n", args[i].help);
/*
if(args[i].type == arg_strings)
fprintf (stderr, "...");
*/
}
printf(".El\n");
printf(".\\\".Sh ENVIRONMENT\n");
printf(".\\\".Sh FILES\n");
printf(".\\\".Sh EXAMPLES\n");
printf(".\\\".Sh DIAGNOSTICS\n");
printf(".\\\".Sh SEE ALSO\n");
printf(".\\\".Sh STANDARDS\n");
printf(".\\\".Sh HISTORY\n");
printf(".\\\".Sh AUTHORS\n");
printf(".\\\".Sh BUGS\n");
}
static int
check_column(FILE *f, int col, int len, int columns)
{
if(col + len > columns) {
fprintf(f, "\n");
col = fprintf(f, " ");
}
return col;
}
static char *
builtin_i18n(const char *str)
{
return rk_UNCONST(str);
}
void ROKEN_LIB_FUNCTION
arg_printusage (struct getargs *args,
size_t num_args,
const char *progname,
const char *extra_string)
{
arg_printusage_i18n(args, num_args, "Usage",
progname, extra_string, builtin_i18n);
}
void ROKEN_LIB_FUNCTION
arg_printusage_i18n (struct getargs *args,
size_t num_args,
const char *usage,
const char *progname,
const char *extra_string,
char *(i18n)(const char *))
{
int i;
size_t max_len = 0;
char buf[128];
int col = 0, columns;
struct winsize ws;
if (progname == NULL)
progname = getprogname();
if (i18n == NULL)
i18n = builtin_i18n;
if(getenv("GETARGMANDOC")){
mandoc_template(args, num_args, progname, extra_string, i18n);
return;
}
if(get_window_size(2, &ws) == 0)
columns = ws.ws_col;
else
columns = 80;
col = 0;
col += fprintf (stderr, "%s: %s", usage, progname);
buf[0] = '\0';
for (i = 0; i < num_args; ++i) {
if(args[i].short_name && ISFLAG(args[i])) {
char s[2];
if(buf[0] == '\0')
strlcpy(buf, "[-", sizeof(buf));
s[0] = args[i].short_name;
s[1] = '\0';
strlcat(buf, s, sizeof(buf));
}
}
if(buf[0] != '\0') {
strlcat(buf, "]", sizeof(buf));
col = check_column(stderr, col, strlen(buf) + 1, columns);
col += fprintf(stderr, " %s", buf);
}
for (i = 0; i < num_args; ++i) {
size_t len = 0;
if (args[i].long_name) {
buf[0] = '\0';
strlcat(buf, "[--", sizeof(buf));
len += 2;
if(args[i].type == arg_negative_flag) {
strlcat(buf, "no-", sizeof(buf));
len += 3;
}
strlcat(buf, args[i].long_name, sizeof(buf));
len += strlen(args[i].long_name);
len += print_arg(buf + strlen(buf), sizeof(buf) - strlen(buf),
0, 1, &args[i], i18n);
strlcat(buf, "]", sizeof(buf));
if(args[i].type == arg_strings)
strlcat(buf, "...", sizeof(buf));
col = check_column(stderr, col, strlen(buf) + 1, columns);
col += fprintf(stderr, " %s", buf);
}
if (args[i].short_name && !ISFLAG(args[i])) {
snprintf(buf, sizeof(buf), "[-%c", args[i].short_name);
len += 2;
len += print_arg(buf + strlen(buf), sizeof(buf) - strlen(buf),
0, 0, &args[i], i18n);
strlcat(buf, "]", sizeof(buf));
if(args[i].type == arg_strings)
strlcat(buf, "...", sizeof(buf));
col = check_column(stderr, col, strlen(buf) + 1, columns);
col += fprintf(stderr, " %s", buf);
}
if (args[i].long_name && args[i].short_name)
len += 2; /* ", " */
max_len = max(max_len, len);
}
if (extra_string) {
check_column(stderr, col, strlen(extra_string) + 1, columns);
fprintf (stderr, " %s\n", extra_string);
} else
fprintf (stderr, "\n");
for (i = 0; i < num_args; ++i) {
if (args[i].help) {
size_t count = 0;
if (args[i].short_name) {
count += fprintf (stderr, "-%c", args[i].short_name);
print_arg (buf, sizeof(buf), 0, 0, &args[i], i18n);
count += fprintf(stderr, "%s", buf);
}
if (args[i].short_name && args[i].long_name)
count += fprintf (stderr, ", ");
if (args[i].long_name) {
count += fprintf (stderr, "--");
if (args[i].type == arg_negative_flag)
count += fprintf (stderr, "no-");
count += fprintf (stderr, "%s", args[i].long_name);
print_arg (buf, sizeof(buf), 0, 1, &args[i], i18n);
count += fprintf(stderr, "%s", buf);
}
while(count++ <= max_len)
putc (' ', stderr);
fprintf (stderr, "%s\n", (*i18n)(args[i].help));
}
}
}
static int
add_string(getarg_strings *s, char *value)
{
char **strings;
strings = realloc(s->strings, (s->num_strings + 1) * sizeof(*s->strings));
if (strings == NULL) {
free(s->strings);
s->strings = NULL;
s->num_strings = 0;
return ENOMEM;
}
s->strings = strings;
s->strings[s->num_strings] = value;
s->num_strings++;
return 0;
}
static int
arg_match_long(struct getargs *args, size_t num_args,
char *argv, int argc, char **rargv, int *goptind)
{
int i;
char *goptarg = NULL;
int negate = 0;
int partial_match = 0;
struct getargs *partial = NULL;
struct getargs *current = NULL;
int argv_len;
char *p;
int p_len;
argv_len = strlen(argv);
p = strchr (argv, '=');
if (p != NULL)
argv_len = p - argv;
for (i = 0; i < num_args; ++i) {
if(args[i].long_name) {
int len = strlen(args[i].long_name);
p = argv;
p_len = argv_len;
negate = 0;
for (;;) {
if (strncmp (args[i].long_name, p, p_len) == 0) {
if(p_len == len)
current = &args[i];
else {
++partial_match;
partial = &args[i];
}
goptarg = p + p_len;
} else if (ISFLAG(args[i]) && strncmp (p, "no-", 3) == 0) {
negate = !negate;
p += 3;
p_len -= 3;
continue;
}
break;
}
if (current)
break;
}
}
if (current == NULL) {
if (partial_match == 1)
current = partial;
else
return ARG_ERR_NO_MATCH;
}
if(*goptarg == '\0'
&& !ISFLAG(*current)
&& current->type != arg_collect
&& current->type != arg_counter)
return ARG_ERR_NO_MATCH;
switch(current->type){
case arg_integer:
{
int tmp;
if(sscanf(goptarg + 1, "%d", &tmp) != 1)
return ARG_ERR_BAD_ARG;
*(int*)current->value = tmp;
return 0;
}
case arg_string:
{
*(char**)current->value = goptarg + 1;
return 0;
}
case arg_strings:
{
return add_string((getarg_strings*)current->value, goptarg + 1);
}
case arg_flag:
case arg_negative_flag:
{
int *flag = current->value;
if(*goptarg == '\0' ||
strcmp(goptarg + 1, "yes") == 0 ||
strcmp(goptarg + 1, "true") == 0){
*flag = !negate;
return 0;
} else if (*goptarg && strcmp(goptarg + 1, "maybe") == 0) {
#ifdef HAVE_RANDOM
*flag = random() & 1;
#else
*flag = rand() & 1;
#endif
} else {
*flag = negate;
return 0;
}
return ARG_ERR_BAD_ARG;
}
case arg_counter :
{
int val;
if (*goptarg == '\0')
val = 1;
else if(sscanf(goptarg + 1, "%d", &val) != 1)
return ARG_ERR_BAD_ARG;
*(int *)current->value += val;
return 0;
}
case arg_double:
{
double tmp;
if(sscanf(goptarg + 1, "%lf", &tmp) != 1)
return ARG_ERR_BAD_ARG;
*(double*)current->value = tmp;
return 0;
}
case arg_collect:{
struct getarg_collect_info *c = current->value;
int o = argv - rargv[*goptind];
return (*c->func)(FALSE, argc, rargv, goptind, &o, c->data);
}
default:
abort ();
}
}
static int
arg_match_short (struct getargs *args, size_t num_args,
char *argv, int argc, char **rargv, int *goptind)
{
int j, k;
for(j = 1; j > 0 && j < strlen(rargv[*goptind]); j++) {
for(k = 0; k < num_args; k++) {
char *goptarg;
if(args[k].short_name == 0)
continue;
if(argv[j] == args[k].short_name) {
if(args[k].type == arg_flag) {
*(int*)args[k].value = 1;
break;
}
if(args[k].type == arg_negative_flag) {
*(int*)args[k].value = 0;
break;
}
if(args[k].type == arg_counter) {
++*(int *)args[k].value;
break;
}
if(args[k].type == arg_collect) {
struct getarg_collect_info *c = args[k].value;
if((*c->func)(TRUE, argc, rargv, goptind, &j, c->data))
return ARG_ERR_BAD_ARG;
break;
}
if(argv[j + 1])
goptarg = &argv[j + 1];
else {
++*goptind;
goptarg = rargv[*goptind];
}
if(goptarg == NULL) {
--*goptind;
return ARG_ERR_NO_ARG;
}
if(args[k].type == arg_integer) {
int tmp;
if(sscanf(goptarg, "%d", &tmp) != 1)
return ARG_ERR_BAD_ARG;
*(int*)args[k].value = tmp;
return 0;
} else if(args[k].type == arg_string) {
*(char**)args[k].value = goptarg;
return 0;
} else if(args[k].type == arg_strings) {
return add_string((getarg_strings*)args[k].value, goptarg);
} else if(args[k].type == arg_double) {
double tmp;
if(sscanf(goptarg, "%lf", &tmp) != 1)
return ARG_ERR_BAD_ARG;
*(double*)args[k].value = tmp;
return 0;
}
return ARG_ERR_BAD_ARG;
}
}
if (k == num_args)
return ARG_ERR_NO_MATCH;
}
return 0;
}
int ROKEN_LIB_FUNCTION
getarg(struct getargs *args, size_t num_args,
int argc, char **argv, int *goptind)
{
int i;
int ret = 0;
#if defined(HAVE_SRANDOMDEV)
srandomdev();
#elif defined(HAVE_RANDOM)
srandom(time(NULL));
#else
srand (time(NULL));
#endif
(*goptind)++;
for(i = *goptind; i < argc; i++) {
if(argv[i][0] != '-')
break;
if(argv[i][1] == '-'){
if(argv[i][2] == 0){
i++;
break;
}
ret = arg_match_long (args, num_args, argv[i] + 2,
argc, argv, &i);
} else {
ret = arg_match_short (args, num_args, argv[i],
argc, argv, &i);
}
if(ret)
break;
}
*goptind = i;
return ret;
}
void ROKEN_LIB_FUNCTION
free_getarg_strings (getarg_strings *s)
{
free (s->strings);
}
#if TEST
int foo_flag = 2;
int flag1 = 0;
int flag2 = 0;
int bar_int;
char *baz_string;
struct getargs args[] = {
{ NULL, '1', arg_flag, &flag1, "one", NULL },
{ NULL, '2', arg_flag, &flag2, "two", NULL },
{ "foo", 'f', arg_negative_flag, &foo_flag, "foo", NULL },
{ "bar", 'b', arg_integer, &bar_int, "bar", "seconds"},
{ "baz", 'x', arg_string, &baz_string, "baz", "name" },
};
int main(int argc, char **argv)
{
int goptind = 0;
while(getarg(args, 5, argc, argv, &goptind))
printf("Bad arg: %s\n", argv[goptind]);
printf("flag1 = %d\n", flag1);
printf("flag2 = %d\n", flag2);
printf("foo_flag = %d\n", foo_flag);
printf("bar_int = %d\n", bar_int);
printf("baz_flag = %s\n", baz_string);
arg_printusage (args, 5, argv[0], "nothing here");
}
#endif
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