fgas/ code cleanup.

xfa/fgas/crt/fgas_encode.cpp

Index: xfa/fgas/crt/fgas_encode.cpp
diff --git a/xfa/fgas/crt/fgas_encode.cpp b/xfa/fgas/crt/fgas_encode.cpp
deleted file mode 100644
index b84406f6421d0446f966ae043649ecc232365f7d..0000000000000000000000000000000000000000
--- a/xfa/fgas/crt/fgas_encode.cpp
+++ /dev/null
@@ -1,193 +0,0 @@
-// 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/fgas/crt/fgas_codepage.h"
-
-void FX_SwapByteOrder(FX_WCHAR* pStr, int32_t iLength) {
-  ASSERT(pStr != NULL);
-  if (iLength < 0) {
-    iLength = FXSYS_wcslen(pStr);
-  }
-  uint16_t wch;
-  if (sizeof(FX_WCHAR) > 2) {
-    while (iLength-- > 0) {
-      wch = (uint16_t)*pStr;
-      wch = (wch >> 8) | (wch << 8);
-      wch &= 0x00FF;
-      *pStr++ = wch;
-    }
-  } else {
-    while (iLength-- > 0) {
-      wch = (uint16_t)*pStr;
-      wch = (wch >> 8) | (wch << 8);
-      *pStr++ = wch;
-    }
-  }
-}
-void FX_SwapByteOrderCopy(const FX_WCHAR* pSrc,
-                          FX_WCHAR* pDst,
-                          int32_t iLength) {
-  ASSERT(pSrc != NULL && pDst != NULL);
-  if (iLength < 0) {
-    iLength = FXSYS_wcslen(pSrc);
-  }
-  uint16_t wch;
-  if (sizeof(FX_WCHAR) > 2) {
-    while (iLength-- > 0) {
-      wch = (uint16_t)*pSrc++;
-      wch = (wch >> 8) | (wch << 8);
-      wch &= 0x00FF;
-      *pDst++ = wch;
-    }
-  } else {
-    while (iLength-- > 0) {
-      wch = (uint16_t)*pSrc++;
-      wch = (wch >> 8) | (wch << 8);
-      *pDst++ = wch;
-    }
-  }
-}
-void FX_UTF16ToWChar(void* pBuffer, int32_t iLength) {
-  ASSERT(pBuffer != NULL && iLength > 0);
-  if (sizeof(FX_WCHAR) == 2) {
-    return;
-  }
-  uint16_t* pSrc = (uint16_t*)pBuffer;
-  FX_WCHAR* pDst = (FX_WCHAR*)pBuffer;
-  while (--iLength >= 0) {
-    pDst[iLength] = (FX_WCHAR)pSrc[iLength];
-  }
-}
-void FX_UTF16ToWCharCopy(const uint16_t* pUTF16,
-                         FX_WCHAR* pWChar,
-                         int32_t iLength) {
-  ASSERT(pUTF16 != NULL && pWChar != NULL && iLength > 0);
-  if (sizeof(FX_WCHAR) == 2) {
-    FXSYS_memcpy(pWChar, pUTF16, iLength * sizeof(FX_WCHAR));
-  } else {
-    while (--iLength >= 0) {
-      pWChar[iLength] = (FX_WCHAR)pUTF16[iLength];
-    }
-  }
-}
-void FX_WCharToUTF16(void* pBuffer, int32_t iLength) {
-  ASSERT(pBuffer != NULL && iLength > 0);
-  if (sizeof(FX_WCHAR) == 2) {
-    return;
-  }
-  const FX_WCHAR* pSrc = (const FX_WCHAR*)pBuffer;
-  uint16_t* pDst = (uint16_t*)pBuffer;
-  while (--iLength >= 0) {
-    *pDst++ = (uint16_t)*pSrc++;
-  }
-}
-void FX_WCharToUTF16Copy(const FX_WCHAR* pWChar,
-                         uint16_t* pUTF16,
-                         int32_t iLength) {
-  ASSERT(pWChar != NULL && pUTF16 != NULL && iLength > 0);
-  if (sizeof(FX_WCHAR) == 2) {
-    FXSYS_memcpy(pUTF16, pWChar, iLength * sizeof(FX_WCHAR));
-  } else {
-    while (--iLength >= 0) {
-      *pUTF16++ = (uint16_t)*pWChar++;
-    }
-  }
-}
-inline uint32_t FX_DWordFromBytes(const uint8_t* pStr) {
-  return FXBSTR_ID(pStr[3], pStr[2], pStr[1], pStr[0]);
-}
-inline uint16_t FX_WordFromBytes(const uint8_t* pStr) {
-  return (pStr[1] << 8 | pStr[0]);
-}
-int32_t FX_DecodeString(uint16_t wCodePage,
-                        const FX_CHAR* pSrc,
-                        int32_t* pSrcLen,
-                        FX_WCHAR* pDst,
-                        int32_t* pDstLen,
-                        FX_BOOL bErrBreak) {
-  if (wCodePage == FX_CODEPAGE_UTF8) {
-    return FX_UTF8Decode(pSrc, pSrcLen, pDst, pDstLen);
-  }
-  return -1;
-}
-int32_t FX_UTF8Decode(const FX_CHAR* pSrc,
-                      int32_t* pSrcLen,
-                      FX_WCHAR* pDst,
-                      int32_t* pDstLen) {
-  if (pSrcLen == NULL || pDstLen == NULL) {
-    return -1;
-  }
-  int32_t iSrcLen = *pSrcLen;
-  if (iSrcLen < 1) {
-    *pSrcLen = *pDstLen = 0;
-    return 1;
-  }
-  int32_t iDstLen = *pDstLen;
-  FX_BOOL bValidDst = (pDst != NULL && iDstLen > 0);
-  uint32_t dwCode = 0;
-  int32_t iPending = 0;
-  int32_t iSrcNum = 0, iDstNum = 0;
-  int32_t k = 0;
-  int32_t iIndex = 0;
-  k = 1;
-  while (iIndex < iSrcLen) {
-    uint8_t byte = (uint8_t) * (pSrc + iIndex);
-    if (byte < 0x80) {
-      iPending = 0;
-      k = 1;
-      iDstNum++;
-      iSrcNum += k;
-      if (bValidDst) {
-        *pDst++ = byte;
-        if (iDstNum >= iDstLen) {
-          break;
-        }
-      }
-    } else if (byte < 0xc0) {
-      if (iPending < 1) {
-        break;
-      }
-      iPending--;
-      dwCode |= (byte & 0x3f) << (iPending * 6);
-      if (iPending == 0) {
-        iDstNum++;
-        iSrcNum += k;
-        if (bValidDst) {
-          *pDst++ = dwCode;
-          if (iDstNum >= iDstLen) {
-            break;
-          }
-        }
-      }
-    } else if (byte < 0xe0) {
-      iPending = 1;
-      k = 2;
-      dwCode = (byte & 0x1f) << 6;
-    } else if (byte < 0xf0) {
-      iPending = 2;
-      k = 3;
-      dwCode = (byte & 0x0f) << 12;
-    } else if (byte < 0xf8) {
-      iPending = 3;
-      k = 4;
-      dwCode = (byte & 0x07) << 18;
-    } else if (byte < 0xfc) {
-      iPending = 4;
-      k = 5;
-      dwCode = (byte & 0x03) << 24;
-    } else if (byte < 0xfe) {
-      iPending = 5;
-      k = 6;
-      dwCode = (byte & 0x01) << 30;
-    } else {
-      break;
-    }
-    iIndex++;
-  }
-  *pSrcLen = iSrcNum;
-  *pDstLen = iDstNum;
-  return 1;
-}