Rename fxcrt_ and ifxcrt_ files to better names

The CFXCRT and IFXCRT prefix was only used on 3 files. This CL renames
them to the more common CFX and IFX. The files were renamed as needed.

Change-Id: Iccdaa55c5822adb93af7c58aedfb121413a30223
Reviewed-on: https://pdfium-review.googlesource.com/12675
Reviewed-by: Tom Sepez <tsepez@chromium.org>
Commit-Queue: dsinclair <dsinclair@chromium.org>

1 files changed, 153 insertions, 0 deletions

diff --git a/core/fxcrt/cfx_fileaccess_posix.cpp b/core/fxcrt/cfx_fileaccess_posix.cpp
new file mode 100644
index 0000000000..345b6641ef
--- /dev/null
+++ b/core/fxcrt/cfx_fileaccess_posix.cpp
@@ -0,0 +1,153 @@
+// 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/cfx_fileaccess_posix.h"
+
+#include <memory>
+
+#include "third_party/base/ptr_util.h"
+
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif  // O_BINARY
+
+#ifndef O_LARGEFILE
+#define O_LARGEFILE 0
+#endif  // O_LARGEFILE
+
+#if _FXM_PLATFORM_ == _FXM_PLATFORM_LINUX_ || \
+    _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ || \
+    _FXM_PLATFORM_ == _FXM_PLATFORM_ANDROID_
+
+namespace {
+
+void 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;
+  }
+}
+
+}  // namespace
+
+// static
+std::unique_ptr<IFX_FileAccess> IFX_FileAccess::Create() {
+  return pdfium::MakeUnique<CFX_FileAccess_Posix>();
+}
+
+CFX_FileAccess_Posix::CFX_FileAccess_Posix() : m_nFD(-1) {}
+
+CFX_FileAccess_Posix::~CFX_FileAccess_Posix() {
+  Close();
+}
+
+bool CFX_FileAccess_Posix::Open(const CFX_ByteStringC& fileName,
+                                uint32_t dwMode) {
+  if (m_nFD > -1)
+    return false;
+
+  int32_t nFlags;
+  int32_t nMasks;
+  GetFileMode(dwMode, nFlags, nMasks);
+
+  // TODO(tsepez): check usage of c_str() below.
+  m_nFD = open(fileName.unterminated_c_str(), nFlags, nMasks);
+  return m_nFD > -1;
+}
+
+bool CFX_FileAccess_Posix::Open(const CFX_WideStringC& fileName,
+                                uint32_t dwMode) {
+  return Open(FX_UTF8Encode(fileName).AsStringC(), dwMode);
+}
+
+void CFX_FileAccess_Posix::Close() {
+  if (m_nFD < 0) {
+    return;
+  }
+  close(m_nFD);
+  m_nFD = -1;
+}
+FX_FILESIZE CFX_FileAccess_Posix::GetSize() const {
+  if (m_nFD < 0) {
+    return 0;
+  }
+  struct stat s;
+  memset(&s, 0, sizeof(s));
+  fstat(m_nFD, &s);
+  return s.st_size;
+}
+FX_FILESIZE CFX_FileAccess_Posix::GetPosition() const {
+  if (m_nFD < 0) {
+    return (FX_FILESIZE)-1;
+  }
+  return lseek(m_nFD, 0, SEEK_CUR);
+}
+FX_FILESIZE CFX_FileAccess_Posix::SetPosition(FX_FILESIZE pos) {
+  if (m_nFD < 0) {
+    return (FX_FILESIZE)-1;
+  }
+  return lseek(m_nFD, pos, SEEK_SET);
+}
+size_t CFX_FileAccess_Posix::Read(void* pBuffer, size_t szBuffer) {
+  if (m_nFD < 0) {
+    return 0;
+  }
+  return read(m_nFD, pBuffer, szBuffer);
+}
+size_t CFX_FileAccess_Posix::Write(const void* pBuffer, size_t szBuffer) {
+  if (m_nFD < 0) {
+    return 0;
+  }
+  return write(m_nFD, pBuffer, szBuffer);
+}
+size_t CFX_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 CFX_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);
+}
+
+bool CFX_FileAccess_Posix::Flush() {
+  if (m_nFD < 0)
+    return false;
+
+  return fsync(m_nFD) > -1;
+}
+
+bool CFX_FileAccess_Posix::Truncate(FX_FILESIZE szFile) {
+  if (m_nFD < 0)
+    return false;
+
+  return !ftruncate(m_nFD, szFile);
+}
+
+#endif