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#include "carbon.h"
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated"
static inline char *
find_process_name_for_psn(ProcessSerialNumber *psn)
{
CFStringRef process_name_ref;
if (CopyProcessName(psn, &process_name_ref) == noErr) {
char *process_name = copy_cfstring(process_name_ref);
for (char *s = process_name; *s; ++s) *s = tolower(*s);
CFRelease(process_name_ref);
return process_name;
}
return NULL;
}
inline char *
find_process_name_for_pid(pid_t pid)
{
ProcessSerialNumber psn;
GetProcessForPID(pid, &psn);
return find_process_name_for_psn(&psn);
}
static inline char *
find_active_process_name(void)
{
ProcessSerialNumber psn;
GetFrontProcess(&psn);
return find_process_name_for_psn(&psn);
}
#pragma clang diagnostic pop
static OSStatus
carbon_event_handler(EventHandlerCallRef ref, EventRef event, void *context)
{
struct carbon_event *carbon = (struct carbon_event *) context;
ProcessSerialNumber psn;
if (GetEventParameter(event,
kEventParamProcessID,
typeProcessSerialNumber,
NULL,
sizeof(psn),
NULL,
&psn) != noErr) {
return -1;
}
if (carbon->process_name) {
free(carbon->process_name);
carbon->process_name = NULL;
}
carbon->process_name = find_process_name_for_psn(&psn);
return noErr;
}
bool carbon_event_init(struct carbon_event *carbon)
{
carbon->target = GetApplicationEventTarget();
carbon->handler = NewEventHandlerUPP(carbon_event_handler);
carbon->type.eventClass = kEventClassApplication;
carbon->type.eventKind = kEventAppFrontSwitched;
carbon->process_name = find_active_process_name();
return InstallEventHandler(carbon->target,
carbon->handler,
1,
&carbon->type,
carbon,
&carbon->handler_ref) == noErr;
}
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