Move core/fpdfapi/fpdf_parser to core/fpdfapi/parser

core/fpdfapi/fpdf_parser/fpdf_parser_utility.cpp

-// 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/fpdfapi/fpdf_parser/fpdf_parser_utility.h"
-
-#include "core/fpdfapi/fpdf_parser/cpdf_array.h"
-#include "core/fpdfapi/fpdf_parser/cpdf_dictionary.h"
-#include "core/fpdfapi/fpdf_parser/cpdf_number.h"
-#include "core/fpdfapi/fpdf_parser/cpdf_reference.h"
-#include "core/fpdfapi/fpdf_parser/cpdf_stream.h"
-#include "core/fpdfapi/fpdf_parser/cpdf_stream_acc.h"
-#include "core/fpdfapi/fpdf_parser/cpdf_string.h"
-#include "core/fpdfapi/fpdf_parser/fpdf_parser_decode.h"
-#include "core/fxcrt/fx_ext.h"
-
-// Indexed by 8-bit character code, contains either:
-//   'W' - for whitespace: NUL, TAB, CR, LF, FF, SPACE, 0x80, 0xff
-//   'N' - for numeric: 0123456789+-.
-//   'D' - for delimiter: %()/<>[]{}
-//   'R' - otherwise.
-const char PDF_CharType[256] = {
-    // NUL  SOH  STX  ETX  EOT  ENQ  ACK  BEL  BS   HT   LF   VT   FF   CR   SO
-    // SI
-    'W', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'W', 'W', 'R', 'W', 'W', 'R',
-    'R',
-
-    // DLE  DC1  DC2  DC3  DC4  NAK  SYN  ETB  CAN  EM   SUB  ESC  FS   GS   RS
-    // US
-    'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R',
-    'R',
-
-    // SP    !    "    #    $    %    &    ´    (    )    *    +    ,    -    .
-    // /
-    'W', 'R', 'R', 'R', 'R', 'D', 'R', 'R', 'D', 'D', 'R', 'N', 'R', 'N', 'N',
-    'D',
-
-    // 0    1    2    3    4    5    6    7    8    9    :    ;    <    =    > ?
-    'N', 'N', 'N', 'N', 'N', 'N', 'N', 'N', 'N', 'N', 'R', 'R', 'D', 'R', 'D',
-    'R',
-
-    // @    A    B    C    D    E    F    G    H    I    J    K    L    M    N O
-    'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R',
-    'R',
-
-    // P    Q    R    S    T    U    V    W    X    Y    Z    [    \    ]    ^ _
-    'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'D', 'R', 'D', 'R',
-    'R',
-
-    // `    a    b    c    d    e    f    g    h    i    j    k    l    m    n o
-    'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R',
-    'R',
-
-    // p    q    r    s    t    u    v    w    x    y    z    {    |    }    ~
-    // DEL
-    'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'D', 'R', 'D', 'R',
-    'R',
-
-    'W', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R',
-    'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R',
-    'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R',
-    'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R',
-    'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R',
-    'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R',
-    'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R',
-    'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R', 'R',
-    'R', 'R', 'R', 'R', 'R', 'R', 'R', 'W'};
-
-int32_t GetHeaderOffset(IFX_FileRead* pFile) {
-  const size_t kBufSize = 4;
-  uint8_t buf[kBufSize];
-  for (int32_t offset = 0; offset <= 1024; ++offset) {
-    if (!pFile->ReadBlock(buf, offset, kBufSize))
-      return -1;
-
-    if (memcmp(buf, "%PDF", 4) == 0)
-      return offset;
-  }
-  return -1;
-}
-
-int32_t GetDirectInteger(CPDF_Dictionary* pDict, const CFX_ByteString& key) {
-  CPDF_Number* pObj = ToNumber(pDict->GetObjectFor(key));
-  return pObj ? pObj->GetInteger() : 0;
-}
-
-CFX_ByteString PDF_NameDecode(const CFX_ByteStringC& bstr) {
-  if (bstr.Find('#') == -1)
-    return CFX_ByteString(bstr);
-
-  int size = bstr.GetLength();
-  CFX_ByteString result;
-  FX_CHAR* pDestStart = result.GetBuffer(size);
-  FX_CHAR* pDest = pDestStart;
-  for (int i = 0; i < size; i++) {
-    if (bstr[i] == '#' && i < size - 2) {
-      *pDest++ =
-          FXSYS_toHexDigit(bstr[i + 1]) * 16 + FXSYS_toHexDigit(bstr[i + 2]);
-      i += 2;
-    } else {
-      *pDest++ = bstr[i];
-    }
-  }
-  result.ReleaseBuffer((FX_STRSIZE)(pDest - pDestStart));
-  return result;
-}
-
-CFX_ByteString PDF_NameDecode(const CFX_ByteString& orig) {
-  if (orig.Find('#') == -1)
-    return orig;
-  return PDF_NameDecode(orig.AsStringC());
-}
-
-CFX_ByteString PDF_NameEncode(const CFX_ByteString& orig) {
-  uint8_t* src_buf = (uint8_t*)orig.c_str();
-  int src_len = orig.GetLength();
-  int dest_len = 0;
-  int i;
-  for (i = 0; i < src_len; i++) {
-    uint8_t ch = src_buf[i];
-    if (ch >= 0x80 || PDFCharIsWhitespace(ch) || ch == '#' ||
-        PDFCharIsDelimiter(ch)) {
-      dest_len += 3;
-    } else {
-      dest_len++;
-    }
-  }
-  if (dest_len == src_len)
-    return orig;
-
-  CFX_ByteString res;
-  FX_CHAR* dest_buf = res.GetBuffer(dest_len);
-  dest_len = 0;
-  for (i = 0; i < src_len; i++) {
-    uint8_t ch = src_buf[i];
-    if (ch >= 0x80 || PDFCharIsWhitespace(ch) || ch == '#' ||
-        PDFCharIsDelimiter(ch)) {
-      dest_buf[dest_len++] = '#';
-      dest_buf[dest_len++] = "0123456789ABCDEF"[ch / 16];
-      dest_buf[dest_len++] = "0123456789ABCDEF"[ch % 16];
-    } else {
-      dest_buf[dest_len++] = ch;
-    }
-  }
-  dest_buf[dest_len] = 0;
-  res.ReleaseBuffer();
-  return res;
-}
-
-CFX_ByteTextBuf& operator<<(CFX_ByteTextBuf& buf, const CPDF_Object* pObj) {
-  if (!pObj) {
-    buf << " null";
-    return buf;
-  }
-  switch (pObj->GetType()) {
-    case CPDF_Object::NULLOBJ:
-      buf << " null";
-      break;
-    case CPDF_Object::BOOLEAN:
-    case CPDF_Object::NUMBER:
-      buf << " " << pObj->GetString();
-      break;
-    case CPDF_Object::STRING:
-      buf << PDF_EncodeString(pObj->GetString(), pObj->AsString()->IsHex());
-      break;
-    case CPDF_Object::NAME: {
-      CFX_ByteString str = pObj->GetString();
-      buf << "/" << PDF_NameEncode(str);
-      break;
-    }
-    case CPDF_Object::REFERENCE: {
-      buf << " " << pObj->AsReference()->GetRefObjNum() << " 0 R ";
-      break;
-    }
-    case CPDF_Object::ARRAY: {
-      const CPDF_Array* p = pObj->AsArray();
-      buf << "[";
-      for (size_t i = 0; i < p->GetCount(); i++) {
-        CPDF_Object* pElement = p->GetObjectAt(i);
-        if (pElement && pElement->GetObjNum()) {
-          buf << " " << pElement->GetObjNum() << " 0 R";
-        } else {
-          buf << pElement;
-        }
-      }
-      buf << "]";
-      break;
-    }
-    case CPDF_Object::DICTIONARY: {
-      const CPDF_Dictionary* p = pObj->AsDictionary();
-      buf << "<<";
-      for (const auto& it : *p) {
-        const CFX_ByteString& key = it.first;
-        CPDF_Object* pValue = it.second;
-        buf << "/" << PDF_NameEncode(key);
-        if (pValue && pValue->GetObjNum()) {
-          buf << " " << pValue->GetObjNum() << " 0 R ";
-        } else {
-          buf << pValue;
-        }
-      }
-      buf << ">>";
-      break;
-    }
-    case CPDF_Object::STREAM: {
-      const CPDF_Stream* p = pObj->AsStream();
-      buf << p->GetDict() << "stream\r\n";
-      CPDF_StreamAcc acc;
-      acc.LoadAllData(p, TRUE);
-      buf.AppendBlock(acc.GetData(), acc.GetSize());
-      buf << "\r\nendstream";
-      break;
-    }
-    default:
-      ASSERT(FALSE);
-      break;
-  }
-  return buf;
-}