/*

 * BeOS platform-dependent support routines for PhysicsFS.

 *

 * Please see the file LICENSE.txt in the source's root directory.

 *

 *  This file written by Ryan C. Gordon.

 */

#define __PHYSICSFS_INTERNAL__

#include "physfs_platforms.h"

#ifdef PHYSFS_PLATFORM_BEOS

#ifdef PHYSFS_PLATFORM_HAIKU

#include <os/kernel/OS.h>

#include <os/app/Roster.h>

#include <os/storage/Volume.h>

#include <os/storage/VolumeRoster.h>

#include <os/storage/Directory.h>

#include <os/storage/Entry.h>

#include <os/storage/Path.h>

#include <os/kernel/fs_info.h>

#include <os/device/scsi.h>

#include <os/support/Locker.h>

#else

#include <be/kernel/OS.h>

#include <be/app/Roster.h>

#include <be/storage/Volume.h>

#include <be/storage/VolumeRoster.h>

#include <be/storage/Directory.h>

#include <be/storage/Entry.h>

#include <be/storage/Path.h>

#include <be/kernel/fs_info.h>

#include <be/device/scsi.h>

#include <be/support/Locker.h>

#endif

#include <errno.h>

#include <unistd.h>

#include "physfs_internal.h"

int __PHYSFS_platformInit(void)

{

    return 1;  /* always succeed. */

} /* __PHYSFS_platformInit */

int __PHYSFS_platformDeinit(void)

{

    return 1;  /* always succeed. */

} /* __PHYSFS_platformDeinit */

static char *getMountPoint(const char *devname, char *buf, size_t bufsize)

{

    BVolumeRoster mounts;

    BVolume vol;

    mounts.Rewind();

    while (mounts.GetNextVolume(&vol) == B_NO_ERROR)

    {

        fs_info fsinfo;

        fs_stat_dev(vol.Device(), &fsinfo);

        if (strcmp(devname, fsinfo.device_name) == 0)

        {

            BDirectory directory;

            BEntry entry;

            BPath path;

            const char *str;

            if ( (vol.GetRootDirectory(&directory) < B_OK) ||

                 (directory.GetEntry(&entry) < B_OK) ||

                 (entry.GetPath(&path) < B_OK) ||

                 ( (str = path.Path()) == NULL) )

                return NULL;

            strncpy(buf, str, bufsize-1);

            buf[bufsize-1] = '\0';

            return buf;

        } /* if */

    } /* while */

    return NULL;

} /* getMountPoint */

    /*

     * This function is lifted from Simple Directmedia Layer (SDL):

     *  https://www.libsdl.org/  ... this is zlib-licensed code, too.

     */

static void tryDir(const char *d, PHYSFS_StringCallback callback, void *data)

{

    BDirectory dir;

    dir.SetTo(d);

    if (dir.InitCheck() != B_NO_ERROR)

        return;

    dir.Rewind();

    BEntry entry;

    while (dir.GetNextEntry(&entry) >= 0)

    {

        BPath path;

        const char *name;

        entry_ref e;

        if (entry.GetPath(&path) != B_NO_ERROR)

            continue;

        name = path.Path();

        if (entry.GetRef(&e) != B_NO_ERROR)

            continue;

        if (entry.IsDirectory())

        {

            if (strcmp(e.name, "floppy") != 0)

                tryDir(name, callback, data);

            continue;

        } /* if */

        if (strcmp(e.name, "raw") != 0)  /* ignore partitions. */

            continue;

        const int devfd = open(name, O_RDONLY);

        if (devfd < 0)

            continue;

        device_geometry g;

        const int rc = ioctl(devfd, B_GET_GEOMETRY, &g, sizeof (g));

        close(devfd);

        if (rc < 0)

            continue;

        if (g.device_type != B_CD)

            continue;

        char mntpnt[B_FILE_NAME_LENGTH];

        if (getMountPoint(name, mntpnt, sizeof (mntpnt)))

            callback(data, mntpnt);

    } /* while */

} /* tryDir */

void __PHYSFS_platformDetectAvailableCDs(PHYSFS_StringCallback cb, void *data)

{

    tryDir("/dev/disk", cb, data);

} /* __PHYSFS_platformDetectAvailableCDs */

static team_id getTeamID(void)

{

    thread_info info;

    thread_id tid = find_thread(NULL);

    get_thread_info(tid, &info);

    return info.team;

} /* getTeamID */

char *__PHYSFS_platformCalcBaseDir(const char *argv0)

{

    image_info info;

    int32 cookie = 0;

    while (get_next_image_info(0, &cookie, &info) == B_OK)

    {

        if (info.type == B_APP_IMAGE)

            break;

    } /* while */

    BEntry entry(info.name, true);

    BPath path;

    status_t rc = entry.GetPath(&path);  /* (path) now has binary's path. */

    assert(rc == B_OK);

    rc = path.GetParent(&path); /* chop filename, keep directory. */

    assert(rc == B_OK);

    const char *str = path.Path();

    assert(str != NULL);

    const size_t len = strlen(str);

    char *retval = (char *) allocator.Malloc(len + 2);

    BAIL_IF_MACRO(!retval, PHYSFS_ERR_OUT_OF_MEMORY, NULL);

    strcpy(retval, str);

    retval[len] = '/';

    retval[len+1] = '\0';

    return retval;

} /* __PHYSFS_platformCalcBaseDir */

char *__PHYSFS_platformCalcPrefDir(const char *org, const char *app)

{

    const char *userdir = __PHYSFS_getUserDir();

    const char *append = "config/settings/";

    const size_t len = strlen(userdir) + strlen(append) + strlen(app) + 2;

    char *retval = allocator.Malloc(len);

    BAIL_IF_MACRO(!retval, PHYSFS_ERR_OUT_OF_MEMORY, NULL);

    snprintf(retval, len, "%s%s%s/", userdir, append, app);

    return retval;

} /* __PHYSFS_platformCalcPrefDir */

void *__PHYSFS_platformGetThreadID(void)

{

    return (void *) find_thread(NULL);

} /* __PHYSFS_platformGetThreadID */

void *__PHYSFS_platformCreateMutex(void)

{

    return new BLocker("PhysicsFS lock", true);

} /* __PHYSFS_platformCreateMutex */

void __PHYSFS_platformDestroyMutex(void *mutex)

{

    delete ((BLocker *) mutex);

} /* __PHYSFS_platformDestroyMutex */

int __PHYSFS_platformGrabMutex(void *mutex)

{

    return ((BLocker *) mutex)->Lock() ? 1 : 0;

} /* __PHYSFS_platformGrabMutex */

void __PHYSFS_platformReleaseMutex(void *mutex)

{

    ((BLocker *) mutex)->Unlock();

} /* __PHYSFS_platformReleaseMutex */

int __PHYSFS_platformSetDefaultAllocator(PHYSFS_Allocator *a)

{

    return 0;  /* just use malloc() and friends. */

} /* __PHYSFS_platformSetDefaultAllocator */

#endif  /* PHYSFS_PLATFORM_BEOS */

/* end of beos.cpp ... */