// Copyright 2014 PDFium Authors. All rights reserved.
|
// Use of this source code is governed by a BSD-style license that can be
|
// found in the LICENSE file.
|
|
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
|
|
#include "core/fxcrt/fxcrt_posix.h"
|
|
#include "core/fxcrt/include/fx_basic.h"
|
|
#if _FXM_PLATFORM_ == _FXM_PLATFORM_LINUX_ || \
|
_FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ || \
|
_FXM_PLATFORM_ == _FXM_PLATFORM_ANDROID_
|
|
// static
|
IFXCRT_FileAccess* IFXCRT_FileAccess::Create() {
|
return new CFXCRT_FileAccess_Posix;
|
}
|
|
void FXCRT_Posix_GetFileMode(uint32_t dwModes,
|
int32_t& nFlags,
|
int32_t& nMasks) {
|
nFlags = O_BINARY | O_LARGEFILE;
|
if (dwModes & FX_FILEMODE_ReadOnly) {
|
nFlags |= O_RDONLY;
|
nMasks = 0;
|
} else {
|
nFlags |= O_RDWR | O_CREAT;
|
if (dwModes & FX_FILEMODE_Truncate) {
|
nFlags |= O_TRUNC;
|
}
|
nMasks = S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH;
|
}
|
}
|
CFXCRT_FileAccess_Posix::CFXCRT_FileAccess_Posix() : m_nFD(-1) {}
|
CFXCRT_FileAccess_Posix::~CFXCRT_FileAccess_Posix() {
|
Close();
|
}
|
FX_BOOL CFXCRT_FileAccess_Posix::Open(const CFX_ByteStringC& fileName,
|
uint32_t dwMode) {
|
if (m_nFD > -1) {
|
return FALSE;
|
}
|
int32_t nFlags, nMasks;
|
FXCRT_Posix_GetFileMode(dwMode, nFlags, nMasks);
|
m_nFD = open(fileName.c_str(), nFlags, nMasks);
|
return m_nFD > -1;
|
}
|
FX_BOOL CFXCRT_FileAccess_Posix::Open(const CFX_WideStringC& fileName,
|
uint32_t dwMode) {
|
return Open(FX_UTF8Encode(fileName).AsStringC(), dwMode);
|
}
|
void CFXCRT_FileAccess_Posix::Close() {
|
if (m_nFD < 0) {
|
return;
|
}
|
close(m_nFD);
|
m_nFD = -1;
|
}
|
FX_FILESIZE CFXCRT_FileAccess_Posix::GetSize() const {
|
if (m_nFD < 0) {
|
return 0;
|
}
|
struct stat s;
|
FXSYS_memset(&s, 0, sizeof(s));
|
fstat(m_nFD, &s);
|
return s.st_size;
|
}
|
FX_FILESIZE CFXCRT_FileAccess_Posix::GetPosition() const {
|
if (m_nFD < 0) {
|
return (FX_FILESIZE)-1;
|
}
|
return lseek(m_nFD, 0, SEEK_CUR);
|
}
|
FX_FILESIZE CFXCRT_FileAccess_Posix::SetPosition(FX_FILESIZE pos) {
|
if (m_nFD < 0) {
|
return (FX_FILESIZE)-1;
|
}
|
return lseek(m_nFD, pos, SEEK_SET);
|
}
|
size_t CFXCRT_FileAccess_Posix::Read(void* pBuffer, size_t szBuffer) {
|
if (m_nFD < 0) {
|
return 0;
|
}
|
return read(m_nFD, pBuffer, szBuffer);
|
}
|
size_t CFXCRT_FileAccess_Posix::Write(const void* pBuffer, size_t szBuffer) {
|
if (m_nFD < 0) {
|
return 0;
|
}
|
return write(m_nFD, pBuffer, szBuffer);
|
}
|
size_t CFXCRT_FileAccess_Posix::ReadPos(void* pBuffer,
|
size_t szBuffer,
|
FX_FILESIZE pos) {
|
if (m_nFD < 0) {
|
return 0;
|
}
|
if (pos >= GetSize()) {
|
return 0;
|
}
|
if (SetPosition(pos) == (FX_FILESIZE)-1) {
|
return 0;
|
}
|
return Read(pBuffer, szBuffer);
|
}
|
size_t CFXCRT_FileAccess_Posix::WritePos(const void* pBuffer,
|
size_t szBuffer,
|
FX_FILESIZE pos) {
|
if (m_nFD < 0) {
|
return 0;
|
}
|
if (SetPosition(pos) == (FX_FILESIZE)-1) {
|
return 0;
|
}
|
return Write(pBuffer, szBuffer);
|
}
|
FX_BOOL CFXCRT_FileAccess_Posix::Flush() {
|
if (m_nFD < 0) {
|
return FALSE;
|
}
|
return fsync(m_nFD) > -1;
|
}
|
FX_BOOL CFXCRT_FileAccess_Posix::Truncate(FX_FILESIZE szFile) {
|
if (m_nFD < 0) {
|
return FALSE;
|
}
|
return !ftruncate(m_nFD, szFile);
|
}
|
|
#endif
|
