platform/beos.cpp
changeset 235 4ad12914f652
child 327 76e207c6b4a7
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/platform/beos.cpp	Fri May 24 09:46:43 2002 +0000
@@ -0,0 +1,281 @@
+/*
+ * BeOS platform-dependent support routines for PhysicsFS.
+ *
+ * Please see the file LICENSE in the source's root directory.
+ *
+ *  This file written by Ryan C. Gordon.
+ */
+
+#if HAVE_CONFIG_H
+#  include <config.h>
+#endif
+
+#ifdef __BEOS__
+
+#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 <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <assert.h>
+#include <unistd.h>
+
+#define __PHYSICSFS_INTERNAL__
+#include "physfs_internal.h"
+
+
+const char *__PHYSFS_platformDirSeparator = "/";
+
+/* !!! FIXME: does strerror() work for non-POSIX api calls? */
+#define get_error_str(x) strerror(x)
+
+
+int __PHYSFS_platformInit(void)
+{
+    return(1);  /* always succeed. */
+} /* __PHYSFS_platformInit */
+
+
+int __PHYSFS_platformDeinit(void)
+{
+    return(1);  /* always succeed. */
+} /* __PHYSFS_platformDeinit */
+
+
+
+/* caller needs to malloc() mntpnt, and expect us to free() it. */
+static void addDisc(char *mntpnt, char ***discs, int *disccount)
+{
+    char **tmp = (char **) realloc(*discs, sizeof (char *) * (*disccount + 1));
+    if (tmp)
+    {
+        tmp[*disccount - 1] = mntpnt;
+        *discs = tmp;
+        (*disccount)++;
+    } /* if */
+} /* addDisc */
+
+
+static char *getMountPoint(const char *devname)
+{
+    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)
+        {
+            //char buf[B_FILE_NAME_LENGTH];
+            BDirectory directory;
+            BEntry entry;
+            BPath path;
+            status_t rc;
+            rc = vol.GetRootDirectory(&directory);
+            BAIL_IF_MACRO(rc < B_OK, get_error_str(rc), NULL);
+            rc = directory.GetEntry(&entry);
+            BAIL_IF_MACRO(rc < B_OK, get_error_str(rc), NULL);
+            rc = entry.GetPath(&path);
+            BAIL_IF_MACRO(rc < B_OK, get_error_str(rc), NULL);
+            const char *str = path.Path();
+            BAIL_IF_MACRO(str == NULL, ERR_OS_ERROR, NULL);  /* ?! */
+            char *retval = (char *) malloc(strlen(str) + 1);
+            BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
+            strcpy(retval, str);
+            return(retval);
+        } /* if */
+    } /* while */
+
+    return(NULL);
+} /* getMountPoint */
+
+
+    /*
+     * This function is lifted from Simple Directmedia Layer (SDL):
+     *  http://www.libsdl.org/
+     */
+static void tryDir(const char *dirname, char ***discs, int *disccount)
+{
+    BDirectory dir;
+    dir.SetTo(dirname);
+    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, discs, disccount);
+        } /* if */
+
+        else
+        {
+            bool add_it = false;
+            int devfd;
+            device_geometry g;
+
+            if (strcmp(e.name, "raw") == 0)  /* ignore partitions. */
+            {
+                int devfd = open(name, O_RDONLY);
+                if (devfd >= 0)
+                {
+                    if (ioctl(devfd, B_GET_GEOMETRY, &g, sizeof(g)) >= 0)
+                    {
+                        if (g.device_type == B_CD)
+                        {
+                            char *mntpnt = getMountPoint(name);
+                            if (mntpnt != NULL)
+                                addDisc(mntpnt, discs, disccount);
+                        } /* if */
+                    } /* if */
+                } /* if */
+            } /* if */
+
+            close(devfd);
+        } /* else */
+    } /* while */
+} /* tryDir */
+
+
+char **__PHYSFS_platformDetectAvailableCDs(void)
+{
+    char **retval = (char **) malloc(sizeof (char *));
+    int cd_count = 1;  /* We count the NULL entry. */
+    BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
+    tryDir("/dev/disk", &retval, &cd_count);
+    retval[cd_count - 1] = NULL;
+    return(retval);
+} /* __PHYSFS_platformDetectAvailableCDs */
+
+
+static team_id getTeamID(void)
+{
+    thread_info info;
+    thread_id tid = find_thread(NULL);
+    get_thread_info(tid, &info);
+    return(info.team);
+} /* getMyTeamID */
+
+
+char *__PHYSFS_platformCalcBaseDir(const char *argv0)
+{
+    /* in case there isn't a BApplication yet, we'll construct a roster. */
+    BRoster roster; 
+    app_info info;
+    status_t rc = roster.GetRunningAppInfo(getTeamID(), &info);
+    BAIL_IF_MACRO(rc < B_OK, get_error_str(rc), NULL);
+    BEntry entry(&(info.ref), true);
+    BPath path;
+    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);
+    char *retval = (char *) malloc(strlen(str) + 1);
+    BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
+    strcpy(retval, str);
+    return(retval);
+} /* __PHYSFS_platformCalcBaseDir */
+
+
+PHYSFS_uint64 __PHYSFS_platformGetThreadID(void)
+{
+    return((PHYSFS_uint64) find_thread(NULL));
+} /* __PHYSFS_platformGetThreadID */
+
+
+/* Much like my college days, try to sleep for 10 milliseconds at a time... */
+void __PHYSFS_platformTimeslice(void)
+{
+    snooze(10000);  /* put thread to sleep for 10 milliseconds. */
+} /* __PHYSFS_platformTimeslice */
+
+
+char *__PHYSFS_platformRealPath(const char *path)
+{
+    char *str = (char *) alloca(strlen(path) + 1);
+    BAIL_IF_MACRO(str == NULL, ERR_OUT_OF_MEMORY, NULL);
+    strcpy(str, path);
+    char *leaf = strrchr(str, '/');
+    if (leaf != NULL)
+        *(leaf++) = '\0';
+
+    BPath normalized(str, leaf, true);  /* force normalization of path. */
+    const char *resolved_path = normalized.Path();
+    BAIL_IF_MACRO(resolved_path == NULL, ERR_FILE_NOT_FOUND, NULL);
+    char *retval = (char *) malloc(strlen(resolved_path) + 1);
+    BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
+    strcpy(retval, resolved_path);
+    return(retval);
+} /* __PHYSFS_platformRealPath */
+
+
+void *__PHYSFS_platformCreateMutex(void)
+{
+    sem_id *retval = (sem_id *) malloc(sizeof (sem_id));
+    sem_id rc;
+
+    BAIL_IF_MACRO(retval == NULL, ERR_OUT_OF_MEMORY, NULL);
+    rc = create_sem(1, "PhysicsFS semaphore");
+    if (rc < B_OK)
+    {
+        free(retval);
+        BAIL_MACRO(get_error_str(rc), NULL);
+    } // if
+
+    *retval = rc;
+    return(retval);
+} /* __PHYSFS_platformCreateMutex */
+
+
+void __PHYSFS_platformDestroyMutex(void *mutex)
+{
+    delete_sem( *((sem_id *) mutex) );
+    free(mutex);
+} /* __PHYSFS_platformDestroyMutex */
+
+
+int __PHYSFS_platformGrabMutex(void *mutex)
+{
+    status_t rc = acquire_sem(*((sem_id *) mutex));
+    BAIL_IF_MACRO(rc < B_OK, get_error_str(rc), 0);
+    return(1);
+} /* __PHYSFS_platformGrabMutex */
+
+
+void __PHYSFS_platformReleaseMutex(void *mutex)
+{
+    release_sem(*((sem_id *) mutex));
+} /* __PHYSFS_platformReleaseMutex */
+
+#endif
+
+/* end of beos.cpp ... */
+