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#include "hotkey.h"
#include <stdlib.h>
#define internal static
#define local_persist static
#define LRMOD_ALT 0
#define LRMOD_CMD 6
#define LRMOD_CTRL 9
#define LRMOD_SHIFT 3
#define LMOD_OFFS 1
#define RMOD_OFFS 2
internal uint32_t cgevent_lrmod_flag[] =
{
Event_Mask_Alt, Event_Mask_LAlt, Event_Mask_RAlt,
Event_Mask_Shift, Event_Mask_LShift, Event_Mask_RShift,
Event_Mask_Cmd, Event_Mask_LCmd, Event_Mask_RCmd,
Event_Mask_Control, Event_Mask_LControl, Event_Mask_RControl,
};
internal uint32_t hotkey_lrmod_flag[] =
{
Hotkey_Flag_Alt, Hotkey_Flag_LAlt, Hotkey_Flag_RAlt,
Hotkey_Flag_Shift, Hotkey_Flag_LShift, Hotkey_Flag_RShift,
Hotkey_Flag_Cmd, Hotkey_Flag_LCmd, Hotkey_Flag_RCmd,
Hotkey_Flag_Control, Hotkey_Flag_LControl, Hotkey_Flag_RControl,
};
internal bool
compare_lr_mod(struct hotkey *a, struct hotkey *b, int mod)
{
bool result = has_flags(a, hotkey_lrmod_flag[mod])
? has_flags(b, hotkey_lrmod_flag[mod + LMOD_OFFS]) ||
has_flags(b, hotkey_lrmod_flag[mod + RMOD_OFFS]) ||
has_flags(b, hotkey_lrmod_flag[mod])
: has_flags(a, hotkey_lrmod_flag[mod + LMOD_OFFS]) == has_flags(b, hotkey_lrmod_flag[mod + LMOD_OFFS]) &&
has_flags(a, hotkey_lrmod_flag[mod + RMOD_OFFS]) == has_flags(b, hotkey_lrmod_flag[mod + RMOD_OFFS]) &&
has_flags(a, hotkey_lrmod_flag[mod]) == has_flags(b, hotkey_lrmod_flag[mod]);
return result;
}
internal bool
compare_fn(struct hotkey *a, struct hotkey *b)
{
return has_flags(a, Hotkey_Flag_Fn) == has_flags(b, Hotkey_Flag_Fn);
}
bool same_hotkey(struct hotkey *a, struct hotkey *b)
{
return compare_lr_mod(a, b, LRMOD_ALT) &&
compare_lr_mod(a, b, LRMOD_CMD) &&
compare_lr_mod(a, b, LRMOD_CTRL) &&
compare_lr_mod(a, b, LRMOD_SHIFT) &&
compare_fn(a, b) &&
a->key == b->key;
}
unsigned long hash_hotkey(struct hotkey *a)
{
return a->key;
}
bool same_mode(char *a, char *b)
{
while (*a && *b && *a == *b) {
++a;
++b;
}
return *a == '\0' && *b == '\0';
}
unsigned long hash_mode(char *key)
{
unsigned long hash = 0, high;
while(*key) {
hash = (hash << 4) + *key++;
high = hash & 0xF0000000;
if(high) {
hash ^= (high >> 24);
}
hash &= ~high;
}
return hash;
}
internal bool
fork_and_exec(char *command)
{
local_persist char arg[] = "-c";
local_persist char *shell = NULL;
if (!shell) {
char *env_shell = getenv("SHELL");
shell = env_shell ? env_shell : "/bin/bash";
}
int cpid = fork();
if (cpid == 0) {
char *exec[] = { shell, arg, command, NULL};
int status_code = execvp(exec[0], exec);
exit(status_code);
}
return true;
}
bool find_and_exec_hotkey(struct hotkey *eventkey, struct table *mode_map, struct mode **current_mode)
{
bool result = false;
struct hotkey *hotkey;
if ((hotkey = table_find(&(*current_mode)->hotkey_map, eventkey))) {
if (has_flags(hotkey, Hotkey_Flag_Activate)) {
*current_mode = table_find(mode_map, hotkey->command);
if ((*current_mode)->command) {
fork_and_exec((*current_mode)->command);
}
result = has_flags(hotkey, Hotkey_Flag_Passthrough) ? false : true;
} else if (fork_and_exec(hotkey->command)) {
result = has_flags(hotkey, Hotkey_Flag_Passthrough) ? false : true;
}
}
return result;
}
internal void
free_hotkeys(struct table *hotkey_map, struct table *freed_pointers)
{
int count;
void **hotkeys = table_reset(hotkey_map, &count);
for (int index = 0; index < count; ++index) {
struct hotkey *hotkey = (struct hotkey *) hotkeys[index];
if (table_find(freed_pointers, hotkey)) {
// we have already freed this pointer, do nothing!
// printf("info: %p has already been freed!\n", hotkey);
} else {
table_add(freed_pointers, hotkey, hotkey);
free(hotkey->command);
free(hotkey);
}
}
if (count) {
free(hotkeys);
}
}
unsigned long hash_pointer(struct hotkey *a) { return (unsigned long)a; }
bool same_pointer(struct hotkey *a, struct hotkey *b) { return a == b; }
void free_mode_map(struct table *mode_map)
{
int count;
struct table freed_pointers;
void **modes = table_reset(mode_map, &count);
if (count) {
table_init(&freed_pointers, 13,
(table_hash_func) hash_pointer,
(table_compare_func) same_pointer);
}
for (int index = 0; index < count; ++index) {
struct mode *mode = (struct mode *) modes[index];
if (mode->command) free(mode->command);
if (mode->name) free(mode->name);
free_hotkeys(&mode->hotkey_map, &freed_pointers);
free(mode);
}
if (count) {
free(modes);
table_free(&freed_pointers);
}
}
internal void
cgevent_lrmod_flag_to_hotkey_lrmod_flag(CGEventFlags flags, struct hotkey *eventkey, int mod)
{
enum osx_event_mask mask = cgevent_lrmod_flag[mod];
enum osx_event_mask lmask = cgevent_lrmod_flag[mod + LMOD_OFFS];
enum osx_event_mask rmask = cgevent_lrmod_flag[mod + RMOD_OFFS];
if ((flags & mask) == mask) {
bool left = (flags & lmask) == lmask;
bool right = (flags & rmask) == rmask;
if (left) add_flags(eventkey, hotkey_lrmod_flag[mod + LMOD_OFFS]);
if (right) add_flags(eventkey, hotkey_lrmod_flag[mod + RMOD_OFFS]);
if (!left && !right) add_flags(eventkey, hotkey_lrmod_flag[mod]);
}
}
void cgeventflags_to_hotkeyflags(CGEventFlags flags, struct hotkey *eventkey)
{
cgevent_lrmod_flag_to_hotkey_lrmod_flag(flags, eventkey, LRMOD_ALT);
cgevent_lrmod_flag_to_hotkey_lrmod_flag(flags, eventkey, LRMOD_CMD);
cgevent_lrmod_flag_to_hotkey_lrmod_flag(flags, eventkey, LRMOD_CTRL);
cgevent_lrmod_flag_to_hotkey_lrmod_flag(flags, eventkey, LRMOD_SHIFT);
if ((flags & Event_Mask_Fn) == Event_Mask_Fn) {
add_flags(eventkey, Hotkey_Flag_Fn);
}
}
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