vfs_palmos.c
资源名称:tcpmp.rar [点击查看]
上传用户:wstnjxml
上传日期:2014-04-03
资源大小:7248k
文件大小:8k
源码类别:
Windows CE
开发平台:
C/C++
- /***************************************************************************** * * This program is free software ; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * $Id: vfs_palmos.c 339 2005-11-15 11:22:45Z picard $ * * The Core Pocket Media Player * Copyright (c) 2004-2005 Gabor Kovacs * ****************************************************************************/ #include "../common.h" #if defined(TARGET_PALMOS) #include "pace.h" typedef struct vfs { stream Stream; tchar_t URL[MAXPATH]; UInt16 Vol; FileRef File; int Length; int Pos; bool_t Silent; bool_t Create; UInt32 Iter; const tchar_t* Exts; bool_t ExtFilter; } vfs; static int Get(vfs* p, int No, void* Data, int Size) { int Result = ERR_INVALID_PARAM; switch (No) { case STREAM_URL: GETSTRING(p->URL); break; case STREAM_SILENT: GETVALUE(p->Silent,bool_t); break; case STREAM_LENGTH: GETVALUECOND(p->Length,int,p->Length>=0); break; case STREAM_CREATE: GETVALUE(p->Create,bool_t); break; } return Result; } static int Open(vfs* p, const tchar_t* URL, bool_t ReOpen); static int Read(vfs* p,void* Data,int Size) { uint32_t Readed = 0;
- Err Error = VFSFileRead(p->File,Size,Data,&Readed);
- if ((Error==errNone && Readed>0) || Error==vfsErrFileEOF)
- { p->Pos += Readed; return Readed; } if (Error == vfsErrFileBadRef)
- Open(p,p->URL,1); return -1; } static int ReadBlock(vfs* p,block* Block,int Ofs,int Size) {
- uint32_t Readed = 0;
- Err Error;
- if (IsHeapStorage(Block))
- Error = VFSFileReadData(p->File,Size,(void*)Block->Ptr,Ofs,&Readed);
- else
- Error = VFSFileRead(p->File,Size,(void*)(Block->Ptr+Ofs),&Readed);
- if ((Error==errNone && Readed>0) || Error==vfsErrFileEOF) {
- p->Pos += Readed; return Readed; }
- if (Error == vfsErrFileBadRef) Open(p,p->URL,1);
- return -1; } static int Seek(vfs* p,int Pos,int SeekMode) { FileOrigin Origin; Err Error; switch (SeekMode) { default: case SEEK_SET: Origin = vfsOriginBeginning; break; case SEEK_CUR: Origin = vfsOriginCurrent; break; case SEEK_END: Origin = vfsOriginEnd; break; } Error = VFSFileSeek(p->File,Origin,Pos); if (Error == errNone || Error == vfsErrFileEOF) { UInt32 Pos; if (VFSFileTell(p->File,&Pos) == errNone) p->Pos = Pos; return p->Pos; } return -1; } static UInt16 FindVol(int Slot) { UInt16 Ref; UInt32 Iter = vfsIteratorStart; while (Iter != vfsIteratorStop && VFSVolumeEnumerate(&Ref,&Iter)==errNone) { VolumeInfoType Info; VFSVolumeInfo(Ref,&Info); if (Slot==0 && Info.mediaType == 'pose') return Ref; if (Slot<0 && Info.mountClass == vfsMountClass_Simulator && Info.slotRefNum==0xFFFF+Slot) return Ref; if (Slot>0 && Info.mountClass == vfsMountClass_SlotDriver && Info.slotRefNum==Slot) return Ref; } return vfsInvalidVolRef; }
- const tchar_t* VFSToVol(const tchar_t* URL,uint16_t* Vol)
- {
- int Slot = 0;
- bool_t Found = 0;
- tchar_t Mime[MAXPATH];
- const tchar_t* Name = GetMime(URL,Mime,TSIZEOF(Mime),NULL);
- if (Name != URL)
- --Name; // need the '/'
- if (tcsncmp(Mime,"pose",4)==0 || stscanf(Mime,"slot%d",&Slot)==1 || stscanf(Mime,"vol%d",&Slot)==1)
- Found = 1;
- else
- if (stscanf(Mime,"simu%d",&Slot)==1)
- {
- Found = 1;
- Slot = -Slot;
- }
- if (Found && (*Vol=FindVol(Slot))!=vfsInvalidVolRef)
- return Name;
- return NULL;
- }
- bool_t VFSFromVol(uint16_t Vol,const tchar_t* Path,tchar_t* URL,int URLLen)
- {
- int Slot;
- VolumeInfoType Info;
- VFSVolumeInfo(Vol,&Info);
- Slot = Info.slotRefNum;
- if (Slot > 0xFFF0)
- Slot = 0xFFFF-Slot;
- URL[0] = 0;
- if (!Path) Path = T("/");
- if (Info.mediaType == 'pose')
- {
- stprintf_s(URL,URLLen,T("pose:/%s"),Path);
- return 1;
- }
- if (Info.mountClass == vfsMountClass_Simulator)
- {
- stprintf_s(URL,URLLen,T("simu%d:/%s"),Slot,Path);
- return 1;
- }
- if (Info.mountClass == vfsMountClass_SlotDriver)
- {
- stprintf_s(URL,URLLen,(Info.attributes & vfsVolumeAttrNonRemovable)?T("vol%d:/%s"):T("slot%d:/%s"),Slot,Path);
- return 1;
- }
- return 0;
- }
- bool_t FileExits(const tchar_t* URL)
- {
- // open supports VFS
- const tchar_t* Name;
- UInt16 Vol;
- FileRef File = 0;
- Name = VFSToVol(URL,&Vol);
- if (!Name)
- return 0;
- VFSFileOpen(Vol,Name,vfsModeRead,&File);
- if (!File)
- return 0;
- VFSFileClose(File);
- return 1;
- }
- static bool_t InternalOpen(vfs* p,const tchar_t* URL) {
- const tchar_t* Name;
- if (p->File) { VFSFileClose(p->File); p->File = 0; }
- Name = VFSToVol(URL,&p->Vol);
- if (Name)
- VFSFileOpen(p->Vol,Name,vfsModeRead,&p->File); if (!p->File) return 0; tcscpy_s(p->URL,TSIZEOF(p->URL),URL); return 1; } static int Open(vfs* p, const tchar_t* URL, bool_t ReOpen) { if (p->File) { VFSFileClose(p->File); p->File = 0; } p->Length = -1; if (!ReOpen) p->URL[0] = 0; #ifdef MULTITHREAD
- else ThreadSleep(GetTimeFreq()/5);
- #endif if (URL && URL[0]) { UInt32 Pos = 0; if (!InternalOpen(p,URL)) { if (!ReOpen && !p->Silent) ShowError(0,ERR_ID,ERR_FILE_NOT_FOUND,URL); return ERR_FILE_NOT_FOUND; } if (ReOpen) VFSFileSeek(p->File,vfsOriginBeginning,p->Pos); else { p->Length = -1; if (VFSFileSize(p->File,&Pos)==errNone) p->Length = Pos; } if (VFSFileTell(p->File,&Pos) == errNone) p->Pos = Pos; } return ERR_NONE; } static int EnumDir(vfs* p,const tchar_t* URL,const tchar_t* Exts,bool_t ExtFilter,streamdir* Item) { tchar_t Path[MAXPATH]; FileInfoType Info; if (URL) { UInt32 Attrib = 0; p->Exts = Exts; p->ExtFilter = ExtFilter; if (!InternalOpen(p,URL)) return ERR_FILE_NOT_FOUND; VFSFileGetAttributes(p->File,&Attrib); if (!(Attrib & vfsFileAttrDirectory)) return ERR_NOT_DIRECTORY; p->Iter = vfsIteratorStart; }
- Item->DisplayName[0] = 0;
- if (p->File) { Info.nameP = Item->FileName; Info.nameBufLen = sizeof(Item->FileName); while (p->Iter != vfsIteratorStop && VFSDirEntryEnumerate(p->File,&p->Iter,&Info)==errNone) { UInt32 Value; FileRef File = 0; if (Item->FileName[0]=='.') // skip unix/mac hidden files continue; AbsPath(Path,TSIZEOF(Path),Item->FileName,GetMime(p->URL,NULL,0,NULL)); //currently Date and Size is not needed //VFSFileOpen(p->Vol,Path,vfsModeRead,&File); Item->Date = -1; if (File && VFSFileGetDate(File,vfsFileDateModified,&Value)==errNone) Item->Date = Value; if (Info.attributes & vfsFileAttrDirectory) Item->Size = -1; else { if (File && VFSFileSize(File,&Value)==errNone) Item->Size = Value; else Item->Size = 0; Item->Type = CheckExts(Item->FileName,p->Exts); if (!Item->Type && p->ExtFilter) { if (File) VFSFileClose(File); continue; } } if (File) VFSFileClose(File); return ERR_NONE; } VFSFileClose(p->File); p->File = 0; } Item->FileName[0] = 0; return ERR_END_OF_FILE; } static int Set(vfs* p, int No, const void* Data, int Size) { int Result = ERR_INVALID_PARAM; switch (No) { case STREAM_SILENT: SETVALUE(p->Silent,bool_t,ERR_NONE); break; case STREAM_CREATE: SETVALUE(p->Create,bool_t,ERR_NONE); break; case STREAM_URL: Result = Open(p,(const tchar_t*)Data,0); break; } return Result; } static int Create(vfs* p) { p->Stream.Get = (nodeget)Get; p->Stream.Set = (nodeset)Set; p->Stream.Read = (streamread)Read; p->Stream.ReadBlock = (streamreadblock)ReadBlock; p->Stream.Seek = (streamseek)Seek; p->Stream.EnumDir = (streamenumdir)EnumDir; return ERR_NONE; } static void Delete(vfs* p) { Open(p,NULL,0); } static const nodedef VFS = { sizeof(vfs), VFS_ID, STREAM_CLASS, PRI_MINIMUM, (nodecreate)Create, (nodedelete)Delete, }; void VFS_Init() { UInt32 Version; if (QueryPlatform(PLATFORM_MODEL) == MODEL_PALM_SIMULATOR || (FtrGet(sysFileCExpansionMgr, expFtrIDVersion, &Version) == errNone && Version >= 1 && FtrGet(sysFileCVFSMgr, vfsFtrIDVersion, &Version) == errNone && Version >= 1)) NodeRegisterClass(&VFS); } void VFS_Done() { NodeUnRegisterClass(VFS_ID); } #endif