Merge pull request #65 from PikalaxALT/libfs

Libfs

1 files changed, 75 insertions, 0 deletions

diff --git a/arm9/lib/src/FS_command.c b/arm9/lib/src/FS_command.c
new file mode 100644
index 00000000..818a65ea
--- /dev/null
+++ b/arm9/lib/src/FS_command.c
@@ -0,0 +1,75 @@
+#include "FS_file.h"
+#include "FS_archive.h"
+#include "FSi_util.h"
+#include "FS_command.h"
+
+ARM_FUNC void FSi_ReleaseCommand(FSFile * p_file, FSResult ret)
+{
+    OSIntrMode bak_psr = OS_DisableInterrupts();
+    FSi_CutFromList(p_file);
+    p_file->stat &= ~(FS_FILE_STATUS_CANCEL | FS_FILE_STATUS_BUSY | FS_FILE_STATUS_SYNC | FS_FILE_STATUS_ASYNC | FS_FILE_STATUS_OPERATING);
+    p_file->error = ret;
+    OS_WakeupThread(p_file->queue);
+    OS_RestoreInterrupts(bak_psr);
+}
+
+ARM_FUNC FSResult FSi_TranslateCommand(FSFile *p_file, FSCommandType command)
+{
+    FSResult ret;
+
+    FSArchive *const p_arc = p_file->arc;
+    const int bit = (1 << command);
+
+    if (FS_IsFileSyncMode(p_file))
+        p_arc->flag |= FS_ARCHIVE_FLAG_IS_SYNC;
+    else
+        p_arc->flag |= FS_ARCHIVE_FLAG_IS_ASYNC;
+
+    if ((p_arc->proc_flag & bit) != 0)
+    {
+        switch (ret = (*p_arc->proc) (p_file, command))
+        {
+        case FS_RESULT_SUCCESS:
+        case FS_RESULT_FAILURE:
+        case FS_RESULT_UNSUPPORTED:
+            p_file->error = ret;
+            break;
+        case FS_RESULT_PROC_ASYNC:
+            break;
+        case FS_RESULT_PROC_UNKNOWN:
+            ret = FS_RESULT_PROC_DEFAULT;
+            p_arc->proc_flag &= ~bit;
+            break;
+        }
+    }
+    else
+    {
+        ret = FS_RESULT_PROC_DEFAULT;
+    }
+    if (ret == FS_RESULT_PROC_DEFAULT)
+    {
+        ret = (*fsi_default_command[command]) (p_file);
+    }
+    if (ret == FS_RESULT_PROC_ASYNC)
+    {
+        if (FS_IsFileSyncMode(p_file))
+        {
+            OSIntrMode bak_psr = OS_DisableInterrupts();
+            while (FSi_IsArchiveSync(p_arc))
+                OS_SleepThread(&p_arc->sync_q);
+            ret = p_file->error;
+            OS_RestoreInterrupts(bak_psr);
+        }
+    }
+    else if (!FS_IsFileSyncMode(p_file))
+    {
+        p_arc->flag &= ~FS_ARCHIVE_FLAG_IS_ASYNC;
+        FSi_ReleaseCommand(p_file, ret);
+    }
+    else
+    {
+        p_arc->flag &= ~FS_ARCHIVE_FLAG_IS_SYNC;
+        p_file->error = ret;
+    }
+    return ret;
+}