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#include <ctype.h>
#include <err.h>
#include <stdlib.h>
#include <string.h>
#include <scfg.h>
#include "waypad.h"
#include "util.h"
void add_exec(struct action *action, struct scfg_directive *exec) {
size_t argc = exec->params_len - 1;
action->type = ACTION_EXEC;
action->exec = calloc(argc + 1, sizeof(*action->exec));
for (size_t i = 0; i < argc; i++)
action->exec[i] = strdup(exec->params[i + 1]);
}
void add_mouse(struct action *action, struct scfg_directive *mouse) {
if (mouse->params_len < 2) // mouse <left|right|center>
return;
action->type = ACTION_CLICK;
if (strcmp(mouse->params[1], "left") == 0)
action->click = BTN_LEFT;
else if (strcmp(mouse->params[1], "right") == 0)
action->click = BTN_RIGHT;
else if (strcmp(mouse->params[1], "center") == 0)
action->click = BTN_MIDDLE;
}
static const struct {
const char *name;
enum keyboard_modifier mod;
} mod_map[] = {
{ "shift", KEYMOD_LSHIFT },
{ "lshift", KEYMOD_LSHIFT },
{ "rshift", KEYMOD_RSHIFT },
{ "ctrl", KEYMOD_LCTRL },
{ "lctrl", KEYMOD_LCTRL },
{ "rctrl", KEYMOD_RCTRL },
{ "alt", KEYMOD_LALT },
{ "lalt", KEYMOD_LALT },
{ "ralt", KEYMOD_RALT },
{ "super", KEYMOD_LMETA },
{ "meta", KEYMOD_LMETA },
{ "lmeta", KEYMOD_LMETA },
{ "rmeta", KEYMOD_RMETA },
};
void add_key(struct action *action, struct scfg_directive *key) {
enum keyboard_modifier mod = 0;
const char *param;
size_t i;
if (key->params_len < 2) // key [<mod>...] <key>
return;
for (i = 1; i < key->params_len - 1; i++)
for (size_t j = 0; j < lenghtof(mod_map); j++)
if (strcmp(mod_map[j].name, key->params[i]) == 0)
mod |= mod_map[j].mod;
param = key->params[i];
char keysym[strlen(param) + sizeof("KEY_")];
char *sym = stpcpy(keysym, "KEY_");
for (i = 0; param[i]; i++)
sym[i] = toupper(param[i]);
sym[i] = '\0';
action->type = ACTION_KEY;
action->key.mod = mod;
action->key.code = libevdev_event_code_from_code_name(keysym);
if (action->key.code == -1)
warn("failed to find evdev codename %s", keysym);
}
void add_mode(struct gamepad *pad, struct action *action, struct scfg_directive *mode_bind) {
if (mode_bind->params_len < 2) // mode <name>
return;
action->type = ACTION_MODE;
action->mode = get_make_mode(pad, mode_bind->params[1]);
}
static void handle_buttons(struct gamepad *pad, struct scfg_block *buttons) {
for (size_t i = 0; i < buttons->directives_len; i++) {
struct scfg_directive *button_bind = &buttons->directives[i];
size_t action_idx;
if (sscanf(button_bind->name, "btn%zu", &action_idx) != 1) {
enum gamepad_button map_idx = str_to_button(button_bind->name);
if (map_idx == GAMEPAD_BUTTON_INVALID)
continue;
action_idx = pad->mapping->buttons[map_idx];
}
if (action_idx >= pad->nbuttons) {
warn("invalid button \"%s\"", button_bind->name);
continue;
}
struct action *action = &pad->modes.current->buttons[action_idx];
if (button_bind->params_len < 2)
continue;
if (strcmp(button_bind->params[0], "exec") == 0)
add_exec(action, button_bind);
else if (strcmp(button_bind->params[0], "key") == 0)
add_key(action, button_bind);
else if (strcmp(button_bind->params[0], "mouse") == 0)
add_mouse(action, button_bind);
else if (strcmp(button_bind->params[0], "mode") == 0)
add_mode(pad, action, button_bind);
else
warn("unknown command %s.", button_bind->params[0]);
}
}
static void handle_axis(struct gamepad *pad, struct scfg_block *axis) {
for (size_t i = 0; i < axis->directives_len; i++) {
struct scfg_directive *axis_bind = &axis->directives[i];
size_t action_idx;
if (sscanf(axis_bind->name, "axis%zu", &action_idx) != 1) {
enum gamepad_axis map_idx = str_to_axis(axis_bind->name);
if (map_idx == GAMEPAD_AXIS_INVALID)
continue;
action_idx = pad->mapping->axis[map_idx];
}
if (action_idx >= pad->naxis) {
warn("invalid axis \"%s\"", axis_bind->name);
continue;
}
if (axis_bind->params_len < 2)
continue;
struct action *action = &pad->modes.current->axis[action_idx];
action->type = ACTION_MOUSE;
switch (axis_bind->params[1][0]) {
case 'x':
action->mouse = MOUSE_X;
break;
case 'y':
action->mouse = MOUSE_Y;
break;
default:
continue;
}
}
}
static void handle_mode(struct gamepad *pad, const char *name, struct scfg_block *mode) {
if (!name)
return;
pad->modes.current = get_make_mode(pad, name);
for (size_t i = 0; i < mode->directives_len; i++) {
struct scfg_directive *section = &mode->directives[i];
if (strcmp(section->name, "button") == 0)
handle_buttons(pad, §ion->children);
else if (strcmp(section->name, "axis") == 0)
handle_axis(pad, §ion->children);
else if (strcmp(section->name, "mode") == 0)
warn("can't nest modes.");
}
pad->modes.current = &pad->modes.base;
}
static void handle_gamepad(struct gamepad *pad, struct scfg_block *cfg) {
for (size_t i = 0; i < cfg->directives_len; i++) {
struct scfg_directive *section = &cfg->directives[i];
if (strcmp(section->name, "button") == 0)
handle_buttons(pad, §ion->children);
else if (strcmp(section->name, "axis") == 0)
handle_axis(pad, §ion->children);
else if (strcmp(section->name, "mode") == 0)
handle_mode(pad, section->params_len >= 1 ? section->params[0] : NULL, §ion->children);
}
}
bool load_config(const char *path) {
struct scfg_block config;
if (scfg_load_file(&config, path) != 0)
return false;
for (size_t i = 0; i < config.directives_len; i++) {
struct gamepad *pad = find_gamepad(config.directives[i].name);
if (!pad) {
fprintf(stderr, "\"%s\" not found.\n", config.directives[i].name);
continue;
}
handle_gamepad(pad, &config.directives[i].children);
}
return true;
}
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