Diff: SDFileSystem/FATFileSystem/Interface/FATFileSystem.cpp

Revision:

0:826c6171fc1b

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/SDFileSystem/FATFileSystem/Interface/FATFileSystem.cpp	Wed Jun 20 14:57:48 2012 +0000
@@ -0,0 +1,155 @@
+/* mbed Microcontroller Library - FATFileSystem
+   Copyright (c) 2008, sford */
+
+//Modified by Thomas Hamilton, Copyright 2010
+
+#include "FATFileSystem.h"
+
+DWORD get_fattime(void)
+{
+    return 35719201;
+}
+
+FATFileSystem* FATFileSystem::DriveArray[_DRIVES] = {0};
+
+FATFileSystem::FATFileSystem(const char* SystemName) : FileSystemLike(SystemName)
+{
+    for (unsigned char i = 0; i < _DRIVES; i++)
+    {
+        if(!DriveArray[i])
+        {
+            DriveArray[i] = this;
+            Drive = i;
+            f_mount((BYTE)i, &FileSystemObject);
+            return;
+        }
+    }
+}
+
+FATFileSystem::~FATFileSystem()
+{
+    for (unsigned char i = 0; i < _DRIVES; i++)
+    {
+        if (DriveArray[i] == this)
+        {
+            DriveArray[i] = NULL;
+            f_mount((BYTE)i, NULL);
+        }
+    }
+    delete this;
+}
+
+FileHandle* FATFileSystem::open(const char* filename, int flags)
+{
+    FAT_FIL FileObject;
+    char FileName[64];
+    BYTE ModeFlags = 0;
+
+    sprintf(FileName, "%d:/%s", Drive, filename);
+    switch (flags & 3)
+    {
+        case O_RDONLY: ModeFlags = FA_READ; break;
+        case O_WRONLY: ModeFlags = FA_WRITE; break;
+        case O_RDWR: ModeFlags = FA_READ | FA_WRITE; break;
+    }
+    if(flags & O_CREAT)
+    {
+        if(flags & O_TRUNC)
+        {
+            ModeFlags |= FA_CREATE_ALWAYS;
+        }
+        else
+        {
+            ModeFlags |= FA_OPEN_ALWAYS;
+        }
+    }
+    else
+    {
+        ModeFlags |= FA_OPEN_EXISTING;
+    }
+    if (f_open(&FileObject, (const TCHAR*)FileName, ModeFlags))
+    { 
+        return NULL;
+    }
+    else
+    {
+        if (flags & O_APPEND)
+        {
+            f_lseek(&FileObject, (DWORD)FileObject.fsize);
+        }
+        return new FATFileHandle(FileObject);
+    }
+}
+
+int FATFileSystem::remove(const char* filename)
+{
+    char FileName[64];
+
+    sprintf(FileName, "%d:/%s", Drive, filename);
+    if (f_unlink((const TCHAR*)FileName))
+    { 
+        return -1;
+    }
+    else
+    {
+        return 0;
+    }
+}
+
+int FATFileSystem::rename(const char* oldname, const char* newname)
+{
+    char OldName[64];
+
+    sprintf(OldName, "%d:/%s", Drive, oldname);
+    if (f_rename((const TCHAR*)OldName, (const TCHAR*)newname))
+    {
+        return -1;
+    }
+    else
+    {
+        return 0;
+    }
+}
+
+DirHandle* FATFileSystem::opendir(const char* name)
+{
+    FAT_DIR DirectoryObject;
+    char DirectoryName[64];
+
+    sprintf(DirectoryName, "%d:%s", Drive, name);
+    if (f_opendir(&DirectoryObject, (const TCHAR*)DirectoryName))
+    {
+        return NULL;
+    }
+    else
+    {
+        return new FATDirHandle(DirectoryObject);
+    }
+}
+
+int FATFileSystem::mkdir(const char* name, mode_t mode)
+{
+    char DirectoryName[64];
+
+    sprintf(DirectoryName, "%d:%s", Drive, name);
+    if (f_mkdir((const TCHAR*)DirectoryName))
+    {
+        return -1;
+    }
+    else
+    {
+        return 0;
+    }
+}
+
+int FATFileSystem::format(unsigned int allocationunit)
+{
+    if (f_mkfs(Drive, 0, allocationunit))
+    {
+        return -1;
+    }
+    else
+    {
+        return 0;
+    }
+}
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