Cleanup the xfa/src/fgas directory.

This CL moves the code from xfa/src/fgas/src up one level. It then takes the
headers in xfa/src/fgas/include and moves them to their correct folder. The
src/ and include/ directories are then removed.

In some cases, when moving from include/ there was another header with the
same name. Those headers were either folded together, or the content of the
conflicting folder moved to an anonymous namespace in the cpp file as they were
not used anywhere else.

Files with duplicate names as core/src/crt were renamed to be fgas_ instead of
fx_. (e.g. fgas_system.h, fgas_memory.h, fgas_stream.h)

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1776303002 .

1 files changed, 117 insertions, 0 deletions

diff --git a/xfa/src/fgas/crt/fgas_system.cpp b/xfa/src/fgas/crt/fgas_system.cpp
new file mode 100644
index 0000000000..a4ca7546e0
--- /dev/null
+++ b/xfa/src/fgas/crt/fgas_system.cpp
@@ -0,0 +1,117 @@
+// 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 "xfa/src/fgas/crt/fgas_system.h"
+
+#include <algorithm>
+
+#include "core/include/fxcrt/fx_system.h"
+
+#if _FX_OS_ == _FX_WIN32_DESKTOP_ || _FX_OS_ == _FX_WIN32_MOBILE_ || \
+    _FX_OS_ == _FX_WIN64_
+#include <io.h>
+#elif _FX_OS_ == _FX_LINUX_DESKTOP_ || _FX_OS_ == _FX_LINUX_Mini_
+#include <sys/times.h>
+#endif
+
+namespace {
+
+inline FX_BOOL FX_isupper(int32_t ch) {
+  return ch >= 'A' && ch <= 'Z';
+}
+
+inline int32_t FX_tolower(int32_t ch) {
+  return FX_isupper(ch) ? (ch + 0x20) : ch;
+}
+
+}  // namespace
+
+int32_t FX_wcsnicmp(const FX_WCHAR* s1, const FX_WCHAR* s2, size_t count) {
+  FXSYS_assert(s1 != NULL && s2 != NULL && count > 0);
+  FX_WCHAR wch1 = 0, wch2 = 0;
+  while (count-- > 0) {
+    wch1 = (FX_WCHAR)FX_tolower(*s1++);
+    wch2 = (FX_WCHAR)FX_tolower(*s2++);
+    if (wch1 != wch2) {
+      break;
+    }
+  }
+  return wch1 - wch2;
+}
+
+int32_t FX_filelength(FXSYS_FILE* file) {
+  FXSYS_assert(file != NULL);
+#if _FX_OS_ == _FX_WIN32_DESKTOP_ || _FX_OS_ == _FX_WIN64_
+  return _filelength(_fileno(file));
+#else
+  int32_t iPos = FXSYS_ftell(file);
+  FXSYS_fseek(file, 0, FXSYS_SEEK_END);
+  int32_t iLen = FXSYS_ftell(file);
+  FXSYS_fseek(file, iPos, FXSYS_SEEK_SET);
+  return iLen;
+#endif
+}
+
+FX_BOOL FX_fsetsize(FXSYS_FILE* file, int32_t size) {
+  FXSYS_assert(file != NULL);
+#if _FX_OS_ == _FX_WIN32_DESKTOP_ || _FX_OS_ == _FX_WIN64_
+  return _chsize(_fileno(file), size) == 0;
+#elif _FX_OS_ == _FX_WIN32_MOBILE_
+  HANDLE hFile = _fileno(file);
+  FX_DWORD dwPos = ::SetFilePointer(hFile, 0, 0, FILE_CURRENT);
+  ::SetFilePointer(hFile, size, 0, FILE_BEGIN);
+  FX_BOOL bRet = ::SetEndOfFile(hFile);
+  ::SetFilePointer(hFile, (int32_t)dwPos, 0, FILE_BEGIN);
+  return bRet;
+#else
+  return FALSE;
+#endif
+}
+
+FX_FLOAT FX_wcstof(const FX_WCHAR* pwsStr, int32_t iLength, int32_t* pUsedLen) {
+  FXSYS_assert(pwsStr != NULL);
+  if (iLength < 0) {
+    iLength = FXSYS_wcslen(pwsStr);
+  }
+  if (iLength == 0) {
+    return 0.0f;
+  }
+  int32_t iUsedLen = 0;
+  FX_BOOL bNegtive = FALSE;
+  switch (pwsStr[iUsedLen]) {
+    case '-':
+      bNegtive = TRUE;
+    case '+':
+      iUsedLen++;
+      break;
+  }
+  FX_FLOAT fValue = 0.0f;
+  while (iUsedLen < iLength) {
+    FX_WCHAR wch = pwsStr[iUsedLen];
+    if (wch >= L'0' && wch <= L'9') {
+      fValue = fValue * 10.0f + (wch - L'0');
+    } else {
+      break;
+    }
+    iUsedLen++;
+  }
+  if (iUsedLen < iLength && pwsStr[iUsedLen] == L'.') {
+    FX_FLOAT fPrecise = 0.1f;
+    while (++iUsedLen < iLength) {
+      FX_WCHAR wch = pwsStr[iUsedLen];
+      if (wch >= L'0' && wch <= L'9') {
+        fValue += (wch - L'0') * fPrecise;
+        fPrecise *= 0.1f;
+      } else {
+        break;
+      }
+    }
+  }
+  if (pUsedLen) {
+    *pUsedLen = iUsedLen;
+  }
+  return bNegtive ? -fValue : fValue;
+}