VuoFileUtilitiesCocoa.mm

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#include "VuoFileUtilities.hh"
#include "VuoFileUtilitiesCocoa.hh"
#include "VuoException.hh"
#include "VuoStringUtilities.hh"
 
#include <AppKit/AppKit.h>
#include <sys/utsname.h>
 
void VuoFileUtilitiesCocoa_moveFileToTrash(string filePath)
{
    NSURL *url = [NSURL fileURLWithPath:[NSString stringWithUTF8String:filePath.c_str()]];
    if (!url)
        throw VuoException("Couldn't move file '" + filePath + "' to the trash: Couldn't create NSURL.");
 
    NSError *error = nil;
    bool success = [[NSFileManager defaultManager] trashItemAtURL:url resultingItemURL:nil error:&error];
    if (!success)
        throw VuoException(string("Couldn't move file '" + filePath + "' to the trash: ") + [[error localizedDescription] UTF8String]);
}
 
string VuoFileUtilitiesCocoa_makeTmpDirOnSameVolumeAsPath(string path)
{
    NSString *pathNS = [NSString stringWithUTF8String:path.c_str()];
    if (!pathNS)
        throw VuoException("Path \"" + path + "\" isn't a valid UTF-8 string.");
 
    NSURL *baseURL = [NSURL fileURLWithPath:pathNS isDirectory:YES];
    if (!baseURL)
        throw VuoException("Path \"" + path + "\" isn't a valid directory.");
 
    NSURL *temporaryDirectoryURL = nil;
    while (true)
    {
        NSError *error = nil;
        temporaryDirectoryURL = [[NSFileManager defaultManager] URLForDirectory:NSItemReplacementDirectory
                                                                       inDomain:NSUserDomainMask
                                                              appropriateForURL:baseURL
                                                                         create:YES
                                                                          error:&error];
        if (error)
        {
            NSError *underlyingError = [[error userInfo] objectForKey:NSUnderlyingErrorKey];
            if ([[underlyingError domain] isEqualToString:NSPOSIXErrorDomain]
              && [underlyingError code] == ENOENT)
            {
                // File not found; go up a directory and try again.
                baseURL = [baseURL URLByDeletingLastPathComponent];
            }
            else
                throw VuoException((string("Couldn't get a temp folder: ") + [[error localizedDescription] UTF8String]).c_str());
        }
        else if (!temporaryDirectoryURL)
            throw VuoException("Couldn't get a temp folder for path \"" + path + "\".");
        else
            break;
    }
 
    return [[temporaryDirectoryURL path] UTF8String];
}
 
size_t VuoFileUtilitiesCocoa_getAvailableSpaceOnVolumeContainingPath(string path)
{
    NSString *pathNS = [NSString stringWithUTF8String:path.c_str()];
    if (!pathNS)
        throw VuoException("Path \"" + path + "\" isn't a valid UTF-8 string.");
 
    NSDictionary *fileAttributes;
    while (true)
    {
        NSError *error = nil;
        fileAttributes = [[NSFileManager defaultManager] attributesOfFileSystemForPath:pathNS error:&error];
        if (error)
        {
            NSError *underlyingError = [[error userInfo] objectForKey:NSUnderlyingErrorKey];
            if ([[underlyingError domain] isEqualToString:NSPOSIXErrorDomain]
              && [underlyingError code] == ENOENT)
            {
                // File not found; go up a directory and try again.
                pathNS = [pathNS stringByDeletingLastPathComponent];
            }
            else
                throw VuoException((string("Couldn't get information about path: ") + [[error localizedDescription] UTF8String]).c_str());
        }
        else if (!fileAttributes)
            throw VuoException("Couldn't get information about path \"" + path + "\".");
        else
            break;
    }
 
    unsigned long long freeSpace = [fileAttributes[NSFileSystemFreeSize] longLongValue];
    return freeSpace;
}
 
void VuoFileUtilitiesCocoa_focusProcess(pid_t pid, bool force)
{
    // On recent macOS versions, `-[NSRunningApplication activateWithOptions:]` fails,
    // but the older `SetFrontProcess()` API works, so use that instead.
 
    // NSRunningApplication *compositionApp = [NSRunningApplication runningApplicationWithProcessIdentifier:pid];
    // BOOL ret = [compositionApp activateWithOptions: NSApplicationActivateAllWindows
    //     | (force ? NSApplicationActivateIgnoringOtherApps : 0)];
    // if (!ret)
    //     VUserLog("-[NSRunningApplication activateWithOptions:] failed for pid %d", pid);
 
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
    ProcessSerialNumber psn;
    OSErr ret = GetProcessForPID(pid, &psn);
    if (ret != noErr)
    {
        VUserLog("GetProcessForPID(%d) failed: %d", pid, ret);
        return;
    }
 
    ret = SetFrontProcess(&psn);
    if (ret != noErr)
    {
        VUserLog("SetFrontProcess(%d) failed: %d", pid, ret);
        return;
    }
#pragma clang diagnostic pop
}
 
int VuoFileUtilitiesCocoa_getOSVersionMajor(void)
{
    return NSProcessInfo.processInfo.operatingSystemVersion.majorVersion;
}
 
int VuoFileUtilitiesCocoa_getOSVersionMinor(void)
{
    return NSProcessInfo.processInfo.operatingSystemVersion.minorVersion;
}
 
string VuoFileUtilitiesCocoa_getArchitecture(void)
{
    struct utsname un;
    if (uname(&un) < 0)
        throw VuoException("Couldn't look up the system's architecture: %s", strerror(errno));
 
    return un.machine;
}
 
void VuoFileUtilitiesCocoa_setBundle(string filePath)
{
    CFStringRef path = CFStringCreateWithCString(NULL, filePath.c_str(), kCFStringEncodingUTF8);
    CFURLRef url = CFURLCreateWithFileSystemPath(NULL, path, kCFURLPOSIXPathStyle, true);
    CFErrorRef error;
    if (!CFURLSetResourcePropertyForKey(url, kCFURLIsPackageKey, kCFBooleanTrue, &error))
    {
        CFStringRef errorString = CFErrorCopyDescription(error);
        VUserLog("Warning: Couldn't set kCFURLIsPackageKey on this bundle: %s", VuoStringUtilities::makeFromCFString(errorString).c_str());
        CFRelease(errorString);
    }
    CFRelease(url);
    CFRelease(path);
}
 
static CFURLRef VuoFileUtilitiesCocoa_getCFURL(const string &path)
{
    if (path.empty())
        return nullptr;
 
    CFStringRef cfpath = CFStringCreateWithCString(nullptr, path.c_str(), kCFStringEncodingUTF8);
    if (!cfpath)
        throw VuoException("Path \"" + path + "\" isn't a valid UTF-8 string.");
    VuoDefer(^{ CFRelease(cfpath); });
 
    CFURLRef url = CFURLCreateWithFileSystemPath(nullptr, cfpath, kCFURLPOSIXPathStyle, true);
    if (!url)
        throw VuoException("Path \"" + path + "\" isn't a valid POSIX path.");
 
    return url;
}
 
static CFDataRef VuoFileUtilitiesCocoa_getMacAliasData(const string &path)
{
    CFURLRef url = VuoFileUtilitiesCocoa_getCFURL(path);
    if (!url)
        return nullptr;
    VuoDefer(^{ CFRelease(url); });
 
    return CFURLCreateBookmarkDataFromFile(nullptr, url, nullptr);
}
 
bool VuoFileUtilitiesCocoa_isMacAlias(const string &path)
{
    CFDataRef aliasData = VuoFileUtilitiesCocoa_getMacAliasData(path);
    if (!aliasData)
        return false;
 
    CFRelease(aliasData);
    return true;
}
 
string VuoFileUtilitiesCocoa_resolveMacAlias(const string &path)
{
    CFDataRef aliasData = VuoFileUtilitiesCocoa_getMacAliasData(path);
    if (!aliasData)
        throw VuoException("Path \"" + path + "\" isn't a macOS Alias.");
    VuoDefer(^{ CFRelease(aliasData); });
 
    CFURLRef url = VuoFileUtilitiesCocoa_getCFURL(path);
    VuoDefer(^{ CFRelease(url); });
 
    Boolean isStale = false;
    CFErrorRef error = nullptr;
    CFURLRef resolvedURL = CFURLCreateByResolvingBookmarkData(nullptr, aliasData, kCFBookmarkResolutionWithoutUIMask, url, nullptr, &isStale, &error);
    if (!resolvedURL)
    {
        CFStringRef desc = CFErrorCopyDescription(error);
        VuoDefer(^{ CFRelease(desc); });
        throw VuoException("Path \"" + path + "\" is a macOS Alias, but it couldn't be resolved: \"" + VuoStringUtilities::makeFromCFString(desc) + "\" (isStale=" + std::to_string(isStale) + ")");
    }
    VuoDefer(^{ CFRelease(resolvedURL); });
 
    CFStringRef resolvedPath = CFURLCopyFileSystemPath(resolvedURL, kCFURLPOSIXPathStyle);
    if (!resolvedPath)
        throw VuoException("Path \"" + path + "\" is a macOS Alias, but it resolved to something that isn't a POSIX path (\"" + VuoStringUtilities::makeFromCFString(((NSURL *)resolvedURL).description) + "\").");
    VuoDefer(^{ CFRelease(resolvedPath); });
 
    return VuoStringUtilities::makeFromCFString(resolvedPath);
}