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tools: revamp the ratbag-command option handling

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Put the code in place for a multi-command tool, first command is
  ratbag-command info /path/to/device

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Peter Hutterer
2015-08-19 10:16:41 +10:00
parent 2c64eacd61
commit 0b833aa195
1 changed files with 131 additions and 78 deletions
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209
tools/ratbag-command.c
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@@ -25,70 +25,115 @@
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include <getopt.h>
#include <libratbag.h>
#include <libratbag-util.h>
enum options {
OPT_VERBOSE,
OPT_HELP,
};
enum cmd_flags {
FLAG_VERBOSE = 1 << 0,
};
static void
list_ratbags_usage(void)
{
printf("Usage: %s [options] /sys/class/input/eventX\n"
printf("Usage: %s [options] [command] /sys/class/input/eventX\n"
"/path/to/device .... open the given device only\n"
"\n"
"Features:\n"
"Commands:\n"
" info .... show information about the device's capabilities\n"
"\n"
"Other options:\n"
"--verbose ....... Print debugging output.\n"
"--help .......... Print this help.\n",
"Options:\n"
" --verbose ....... Print debugging output.\n"
" --help .......... Print this help.\n",
program_invocation_short_name);
}
int
parse_args(int argc, char **argv, const char **path, int *verbose)
static inline struct udev_device*
udev_device_from_path(struct udev *udev, const char *path)
{
while (1) {
int c;
int option_index = 0;
static struct option opts[] = {
{ "verbose", 0, 0, OPT_VERBOSE },
{ "help", 0, 0, OPT_HELP },
};
struct udev_device *udev_device;
c = getopt_long(argc, argv, "+h", opts, &option_index);
if (c == -1)
break;
switch(c) {
case 'h':
case OPT_HELP:
list_ratbags_usage();
exit(0);
break;
case OPT_VERBOSE:
*verbose = 1;
break;
default:
list_ratbags_usage();
return -1;
}
udev_device = udev_device_new_from_syspath(udev, path);
if (!udev_device) {
fprintf(stderr, "Can't open '%s': %s\n", path, strerror(errno));
return NULL;
}
if (optind >= argc) {
list_ratbags_usage();
return -1;
}
*path = argv[optind++];
return 0;
return udev_device;
}
static int
ratbag_cmd_info(struct libratbag *libratbag, uint32_t flags, int argc, char **argv)
{
const char *path;
struct ratbag *rb;
struct ratbag_profile *profile;
struct ratbag_button *button;
int i;
int rc = 1;
struct udev *udev;
struct udev_device *udev_device;
if (argc != 1) {
list_ratbags_usage();
return 1;
}
path = argv[0];
udev = udev_new();
udev_device = udev_device_from_path(udev, path);
rb = ratbag_new_from_udev_device(libratbag, udev_device);
if (!rb) {
fprintf(stderr, "Looks like '%s' is not supported\n", path);
goto out;
}
fprintf(stderr, "Opened '%s' (%s).\n", ratbag_get_name(rb), path);
profile = ratbag_get_profile_by_index(rb, 0);
ratbag_set_active_profile(rb, profile);
profile = ratbag_profile_unref(profile);
profile = ratbag_get_active_profile(rb);
for (i = 0; i < ratbag_get_num_buttons(rb); i++) {
button = ratbag_profile_get_button_by_index(profile, i);
button = ratbag_button_unref(button);
}
profile = ratbag_profile_unref(profile);
rb = ratbag_unref(rb);
rc = 0;
out:
udev_device_unref(udev_device);
udev_unref(udev);
return rc;
}
struct ratbag_cmd {
const char *name;
int (*cmd)(struct libratbag *libratbag, uint32_t flags, int argc, char **argv);
};
const struct ratbag_cmd cmd_info = {
.name = "info",
.cmd = ratbag_cmd_info,
};
static const struct ratbag_cmd *ratbag_commands[] = {
&cmd_info,
};
static int
open_restricted(const char *path, int flags, void *user_data)
{
@@ -115,57 +160,65 @@ const struct libratbag_interface interface = {
int
main(int argc, char **argv)
{
struct ratbag *rb;
struct libratbag *libratbag;
struct ratbag_profile *profile;
struct ratbag_button *button;
const char *path;
int i;
int retval = 0;
struct udev *udev;
struct udev_device *udev_device;
int verbose = 0;
if (parse_args(argc, argv, &path, &verbose) == -1)
return 1;
udev = udev_new();
udev_device = udev_device_new_from_syspath(udev, path);
if (!udev_device) {
fprintf(stderr, "Can't open '%s': %s\n", path, strerror(errno));
return 1;
}
const char *command;
int rc = 0;
const struct ratbag_cmd **cmd;
uint32_t flags = 0;
libratbag = libratbag_create_context(&interface, NULL);
if (!libratbag) {
fprintf(stderr, "Can't initialize libratbag\n");
return 1;
}
rb = ratbag_new_from_udev_device(libratbag, udev_device);
if (!rb) {
fprintf(stderr, "Looks like '%s' is not supported\n", path);
retval = 1;
goto out;
}
fprintf(stderr, "Opened '%s' (%s).\n", ratbag_get_name(rb), path);
while (1) {
int c;
int option_index = 0;
static struct option opts[] = {
{ "verbose", 0, 0, OPT_VERBOSE },
{ "help", 0, 0, OPT_HELP },
};
profile = ratbag_get_profile_by_index(rb, 0);
ratbag_set_active_profile(rb, profile);
profile = ratbag_profile_unref(profile);
profile = ratbag_get_active_profile(rb);
for (i = 0; i < ratbag_get_num_buttons(rb); i++) {
button = ratbag_profile_get_button_by_index(profile, i);
button = ratbag_button_unref(button);
c = getopt_long(argc, argv, "+h", opts, &option_index);
if (c == -1)
break;
switch(c) {
case 'h':
case OPT_HELP:
list_ratbags_usage();
goto out;
case OPT_VERBOSE:
flags |= FLAG_VERBOSE;
break;
default:
list_ratbags_usage();
return 1;
}
}
if (optind >= argc) {
list_ratbags_usage();
return 1;
}
command = argv[optind++];
ARRAY_FOR_EACH(ratbag_commands, cmd) {
if (!streq((*cmd)->name, command))
continue;
argc -= optind;
argv += optind;
/* reset optind to reset the internal state, see NOTES in
* getopt(3) */
optind = 0;
rc = (*cmd)->cmd(libratbag, flags, argc, argv);
break;
}
profile = ratbag_profile_unref(profile);
out:
rb = ratbag_unref(rb);
libratbag_unref(libratbag);
udev_unref(udev);
return retval;
return rc;
}