diff options
author | John Abd-El-Malek <jabdelmalek@google.com> | 2014-05-23 17:28:10 -0700 |
---|---|---|
committer | John Abd-El-Malek <jabdelmalek@google.com> | 2014-05-23 17:41:56 -0700 |
commit | 3f3b45cc74b0499912409f766a595945dbbfc4c5 (patch) | |
tree | ec400b6965477b88ea7f0d335f7e5c52044c346c /core/src/fpdfapi/fpdf_parser/fpdf_parser_decode.cpp | |
parent | 6fe4aed948337175f6f7f81bb03c37b9c7f535da (diff) | |
download | pdfium-3f3b45cc74b0499912409f766a595945dbbfc4c5.tar.xz |
Convert all line endings to LF.
Diffstat (limited to 'core/src/fpdfapi/fpdf_parser/fpdf_parser_decode.cpp')
-rw-r--r-- | core/src/fpdfapi/fpdf_parser/fpdf_parser_decode.cpp | 1066 |
1 files changed, 533 insertions, 533 deletions
diff --git a/core/src/fpdfapi/fpdf_parser/fpdf_parser_decode.cpp b/core/src/fpdfapi/fpdf_parser/fpdf_parser_decode.cpp index 74e81d40fd..dfc26bc197 100644 --- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_decode.cpp +++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_decode.cpp @@ -1,533 +1,533 @@ -// 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 "../../../include/fpdfapi/fpdf_parser.h"
-#include "../../../include/fpdfapi/fpdf_module.h"
-#include "../../../include/fxcodec/fx_codec.h"
-#include <limits.h>
-#define _STREAM_MAX_SIZE_ 20 * 1024 * 1024
-FX_DWORD _A85Decode(const FX_BYTE* src_buf, FX_DWORD src_size, FX_LPBYTE& dest_buf, FX_DWORD& dest_size)
-{
- dest_size = 0;
- dest_buf = NULL;
- if (src_size == 0) {
- return 0;
- }
- FX_DWORD orig_size = dest_size;
- FX_DWORD zcount = 0;
- FX_DWORD pos = 0;
- while (pos < src_size) {
- FX_BYTE ch = src_buf[pos];
- if (ch < '!' && ch != '\n' && ch != '\r' && ch != ' ' && ch != '\t') {
- break;
- }
- if (ch == 'z') {
- zcount ++;
- } else if (ch > 'u') {
- break;
- }
- pos ++;
- }
- if (pos == 0) {
- return 0;
- }
- if (zcount > UINT_MAX / 4) {
- return (FX_DWORD) - 1;
- }
- if (zcount * 4 > UINT_MAX - (pos - zcount)) {
- return (FX_DWORD) - 1;
- }
- dest_buf = FX_Alloc(FX_BYTE, zcount * 4 + (pos - zcount));
- if (dest_buf == NULL) {
- return (FX_DWORD) - 1;
- }
- int state = 0, res = 0;
- pos = dest_size = 0;
- while (pos < src_size) {
- FX_BYTE ch = src_buf[pos++];
- if (ch == '\n' || ch == '\r' || ch == ' ' || ch == '\t') {
- continue;
- }
- if (ch == 'z') {
- FXSYS_memset32(dest_buf + dest_size, 0, 4);
- state = 0;
- res = 0;
- dest_size += 4;
- } else {
- if (ch < '!' || ch > 'u') {
- break;
- }
- res = res * 85 + ch - 33;
- state ++;
- if (state == 5) {
- for (int i = 0; i < 4; i ++) {
- dest_buf[dest_size++] = (FX_BYTE)(res >> (3 - i) * 8);
- }
- state = 0;
- res = 0;
- }
- }
- }
- if (state) {
- int i;
- for (i = state; i < 5; i ++) {
- res = res * 85 + 84;
- }
- for (i = 0; i < state - 1; i ++) {
- dest_buf[dest_size++] = (FX_BYTE)(res >> (3 - i) * 8);
- }
- }
- if (pos < src_size && src_buf[pos] == '>') {
- pos ++;
- }
- return pos;
-}
-FX_DWORD _HexDecode(const FX_BYTE* src_buf, FX_DWORD src_size, FX_LPBYTE& dest_buf, FX_DWORD& dest_size)
-{
- FX_DWORD orig_size = dest_size;
- FX_DWORD i;
- for (i = 0; i < src_size; i ++)
- if (src_buf[i] == '>') {
- break;
- }
- dest_buf = FX_Alloc( FX_BYTE, i / 2 + 1);
- dest_size = 0;
- FX_BOOL bFirstDigit = TRUE;
- for (i = 0; i < src_size; i ++) {
- FX_BYTE ch = src_buf[i];
- if (ch == ' ' || ch == '\n' || ch == '\t' || ch == '\r') {
- continue;
- }
- int digit;
- if (ch <= '9' && ch >= '0') {
- digit = ch - '0';
- } else if (ch <= 'f' && ch >= 'a') {
- digit = ch - 'a' + 10;
- } else if (ch <= 'F' && ch >= 'A') {
- digit = ch - 'A' + 10;
- } else if (ch == '>') {
- i ++;
- break;
- } else {
- continue;
- }
- if (bFirstDigit) {
- dest_buf[dest_size] = digit * 16;
- } else {
- dest_buf[dest_size ++] += digit;
- }
- bFirstDigit = !bFirstDigit;
- }
- if (!bFirstDigit) {
- dest_size ++;
- }
- return i;
-}
-FX_DWORD RunLengthDecode(const FX_BYTE* src_buf, FX_DWORD src_size, FX_LPBYTE& dest_buf, FX_DWORD& dest_size)
-{
- FX_DWORD orig_size = dest_size;
- FX_DWORD i = 0;
- FX_DWORD old;
- dest_size = 0;
- while (i < src_size) {
- if (src_buf[i] < 128) {
- old = dest_size;
- dest_size += src_buf[i] + 1;
- if (dest_size < old) {
- return (FX_DWORD) - 1;
- }
- i += src_buf[i] + 2;
- } else if (src_buf[i] > 128) {
- old = dest_size;
- dest_size += 257 - src_buf[i];
- if (dest_size < old) {
- return (FX_DWORD) - 1;
- }
- i += 2;
- } else {
- break;
- }
- }
- if (dest_size >= _STREAM_MAX_SIZE_) {
- return -1;
- }
- dest_buf = FX_Alloc( FX_BYTE, dest_size);
- if (!dest_buf) {
- return -1;
- }
- i = 0;
- int dest_count = 0;
- while (i < src_size) {
- if (src_buf[i] < 128) {
- FX_DWORD copy_len = src_buf[i] + 1;
- FX_DWORD buf_left = src_size - i - 1;
- if (buf_left < copy_len) {
- FX_DWORD delta = copy_len - buf_left;
- copy_len = buf_left;
- FXSYS_memset8(dest_buf + dest_count + copy_len, '\0', delta);
- }
- FXSYS_memcpy32(dest_buf + dest_count, src_buf + i + 1, copy_len);
- dest_count += src_buf[i] + 1;
- i += src_buf[i] + 2;
- } else if (src_buf[i] > 128) {
- int fill = 0;
- if (i < src_size - 1) {
- fill = src_buf[i + 1];
- }
- FXSYS_memset8(dest_buf + dest_count, fill, 257 - src_buf[i]);
- dest_count += 257 - src_buf[i];
- i += 2;
- } else {
- break;
- }
- }
- FX_DWORD ret = i + 1;
- if (ret > src_size) {
- ret = src_size;
- }
- return ret;
-}
-ICodec_ScanlineDecoder* FPDFAPI_CreateFaxDecoder(FX_LPCBYTE src_buf, FX_DWORD src_size, int width, int height,
- const CPDF_Dictionary* pParams)
-{
- int K = 0;
- FX_BOOL EndOfLine = FALSE;
- FX_BOOL ByteAlign = FALSE;
- FX_BOOL BlackIs1 = FALSE;
- FX_BOOL Columns = 1728;
- FX_BOOL Rows = 0;
- if (pParams) {
- K = pParams->GetInteger(FX_BSTRC("K"));
- EndOfLine = pParams->GetInteger(FX_BSTRC("EndOfLine"));
- ByteAlign = pParams->GetInteger(FX_BSTRC("EncodedByteAlign"));
- BlackIs1 = pParams->GetInteger(FX_BSTRC("BlackIs1"));
- Columns = pParams->GetInteger(FX_BSTRC("Columns"), 1728);
- Rows = pParams->GetInteger(FX_BSTRC("Rows"));
- if (Rows > USHRT_MAX) {
- Rows = 0;
- }
- if (Columns <= 0 || Rows < 0 || Columns > USHRT_MAX || Rows > USHRT_MAX) {
- return NULL;
- }
- }
- return CPDF_ModuleMgr::Get()->GetFaxModule()->CreateDecoder(src_buf, src_size, width, height,
- K, EndOfLine, ByteAlign, BlackIs1, Columns, Rows);
-}
-static FX_BOOL CheckFlateDecodeParams(int Colors, int BitsPerComponent, int Columns)
-{
- if (Columns < 0) {
- return FALSE;
- }
- int check = Columns;
- if (Colors < 0 || (check > 0 && Colors > INT_MAX / check)) {
- return FALSE;
- }
- check *= Colors;
- if (BitsPerComponent < 0 ||
- (check > 0 && BitsPerComponent > INT_MAX / check)) {
- return FALSE;
- }
- check *= BitsPerComponent;
- if (check > INT_MAX - 7) {
- return FALSE;
- }
- return TRUE;
-}
-ICodec_ScanlineDecoder* FPDFAPI_CreateFlateDecoder(FX_LPCBYTE src_buf, FX_DWORD src_size, int width, int height,
- int nComps, int bpc, const CPDF_Dictionary* pParams)
-{
- int predictor = 0;
- FX_BOOL bEarlyChange = TRUE;
- int Colors = 0, BitsPerComponent = 0, Columns = 0;
- if (pParams) {
- predictor = ((CPDF_Dictionary*)pParams)->GetInteger(FX_BSTRC("Predictor"));
- bEarlyChange = ((CPDF_Dictionary*)pParams)->GetInteger(FX_BSTRC("EarlyChange"), 1);
- Colors = pParams->GetInteger(FX_BSTRC("Colors"), 1);
- BitsPerComponent = pParams->GetInteger(FX_BSTRC("BitsPerComponent"), 8);
- Columns = pParams->GetInteger(FX_BSTRC("Columns"), 1);
- if (!CheckFlateDecodeParams(Colors, BitsPerComponent, Columns)) {
- return NULL;
- }
- }
- return CPDF_ModuleMgr::Get()->GetFlateModule()->CreateDecoder(src_buf, src_size, width, height,
- nComps, bpc, predictor, Colors, BitsPerComponent, Columns);
-}
-FX_DWORD FPDFAPI_FlateOrLZWDecode(FX_BOOL bLZW, const FX_BYTE* src_buf, FX_DWORD src_size, CPDF_Dictionary* pParams,
- FX_DWORD estimated_size, FX_LPBYTE& dest_buf, FX_DWORD& dest_size)
-{
- int predictor = 0;
- FX_BOOL bEarlyChange = TRUE;
- int Colors = 0, BitsPerComponent = 0, Columns = 0;
- if (pParams) {
- predictor = ((CPDF_Dictionary*)pParams)->GetInteger(FX_BSTRC("Predictor"));
- bEarlyChange = ((CPDF_Dictionary*)pParams)->GetInteger(FX_BSTRC("EarlyChange"), 1);
- Colors = pParams->GetInteger(FX_BSTRC("Colors"), 1);
- BitsPerComponent = pParams->GetInteger(FX_BSTRC("BitsPerComponent"), 8);
- Columns = pParams->GetInteger(FX_BSTRC("Columns"), 1);
- if (!CheckFlateDecodeParams(Colors, BitsPerComponent, Columns)) {
- return (FX_DWORD) - 1;
- }
- }
- return CPDF_ModuleMgr::Get()->GetFlateModule()->FlateOrLZWDecode(bLZW, src_buf, src_size,
- bEarlyChange, predictor, Colors, BitsPerComponent, Columns, estimated_size,
- dest_buf, dest_size);
-}
-FX_BOOL PDF_DataDecode(FX_LPCBYTE src_buf, FX_DWORD src_size, const CPDF_Dictionary* pDict,
- FX_LPBYTE& dest_buf, FX_DWORD& dest_size, CFX_ByteString& ImageEncoding,
- CPDF_Dictionary*& pImageParms, FX_DWORD last_estimated_size, FX_BOOL bImageAcc)
-
-{
- CPDF_Object* pDecoder = pDict->GetElementValue(FX_BSTRC("Filter"));
- if (pDecoder == NULL || (pDecoder->GetType() != PDFOBJ_ARRAY && pDecoder->GetType() != PDFOBJ_NAME)) {
- return FALSE;
- }
- CPDF_Object* pParams = pDict->GetElementValue(FX_BSTRC("DecodeParms"));
- CFX_ByteStringArray DecoderList;
- CFX_PtrArray ParamList;
- if (pDecoder->GetType() == PDFOBJ_ARRAY) {
- if (pParams && pParams->GetType() != PDFOBJ_ARRAY) {
- pParams = NULL;
- }
- CPDF_Array* pDecoders = (CPDF_Array*)pDecoder;
- for (FX_DWORD i = 0; i < pDecoders->GetCount(); i ++) {
- CFX_ByteStringC str = pDecoders->GetConstString(i);
- DecoderList.Add(str);
- if (pParams) {
- ParamList.Add(((CPDF_Array*)pParams)->GetDict(i));
- } else {
- ParamList.Add(NULL);
- }
- }
- } else {
- DecoderList.Add(pDecoder->GetConstString());
- ParamList.Add(pParams->GetDict());
- }
- FX_LPBYTE last_buf = (FX_LPBYTE)src_buf;
- FX_DWORD last_size = src_size;
- for (int i = 0; i < DecoderList.GetSize(); i ++) {
- int estimated_size = i == DecoderList.GetSize() - 1 ? last_estimated_size : 0;
- CFX_ByteString decoder = DecoderList[i];
- CPDF_Dictionary* pParam = (CPDF_Dictionary*)ParamList[i];
- FX_LPBYTE new_buf = NULL;
- FX_DWORD new_size = (FX_DWORD) - 1;
- int offset = -1;
- if (decoder == FX_BSTRC("FlateDecode") || decoder == FX_BSTRC("Fl")) {
- if (bImageAcc && i == DecoderList.GetSize() - 1) {
- ImageEncoding = FX_BSTRC("FlateDecode");
- dest_buf = (FX_LPBYTE)last_buf;
- dest_size = last_size;
- pImageParms = pParam;
- return TRUE;
- } else {
- offset = FPDFAPI_FlateOrLZWDecode(FALSE, last_buf, last_size, pParam, estimated_size, new_buf, new_size);
- }
- } else if (decoder == FX_BSTRC("LZWDecode") || decoder == FX_BSTRC("LZW")) {
- offset = FPDFAPI_FlateOrLZWDecode(TRUE, last_buf, last_size, pParam, estimated_size, new_buf, new_size);
- } else if (decoder == FX_BSTRC("ASCII85Decode") || decoder == FX_BSTRC("A85")) {
- offset = _A85Decode(last_buf, last_size, new_buf, new_size);
- } else if (decoder == FX_BSTRC("ASCIIHexDecode") || decoder == FX_BSTRC("AHx")) {
- offset = _HexDecode(last_buf, last_size, new_buf, new_size);
- } else if (decoder == FX_BSTRC("RunLengthDecode") || decoder == FX_BSTRC("RL")) {
- if (bImageAcc && i == DecoderList.GetSize() - 1) {
- ImageEncoding = FX_BSTRC("RunLengthDecode");
- dest_buf = (FX_LPBYTE)last_buf;
- dest_size = last_size;
- pImageParms = pParam;
- return TRUE;
- }
- offset = RunLengthDecode(last_buf, last_size, new_buf, new_size);
- } else {
- if (decoder == FX_BSTRC("DCT")) {
- decoder = "DCTDecode";
- } else if (decoder == FX_BSTRC("CCF")) {
- decoder = "CCITTFaxDecode";
- } else if (decoder == FX_BSTRC("Crypt")) {
- continue;
- }
- ImageEncoding = decoder;
- pImageParms = pParam;
- dest_buf = (FX_LPBYTE)last_buf;
- dest_size = last_size;
- return TRUE;
- }
- if (last_buf != src_buf) {
- FX_Free(last_buf);
- }
- if (offset == -1) {
- return FALSE;
- }
- last_buf = new_buf;
- last_size = new_size;
- }
- ImageEncoding = "";
- pImageParms = NULL;
- dest_buf = last_buf;
- dest_size = last_size;
- return TRUE;
-}
-extern const FX_WORD PDFDocEncoding[256] = {
- 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007, 0x0008, 0x0009,
- 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f, 0x0010, 0x0011, 0x0012, 0x0013,
- 0x0014, 0x0015, 0x0016, 0x0017, 0x02d8, 0x02c7, 0x02c6, 0x02d9, 0x02dd, 0x02db,
- 0x02da, 0x02dc, 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027,
- 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f, 0x0030, 0x0031,
- 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037, 0x0038, 0x0039, 0x003a, 0x003b,
- 0x003c, 0x003d, 0x003e, 0x003f, 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045,
- 0x0046, 0x0047, 0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f,
- 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057, 0x0058, 0x0059,
- 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f, 0x0060, 0x0061, 0x0062, 0x0063,
- 0x0064, 0x0065, 0x0066, 0x0067, 0x0068, 0x0069, 0x006a, 0x006b, 0x006c, 0x006d,
- 0x006e, 0x006f, 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077,
- 0x0078, 0x0079, 0x007a, 0x007b, 0x007c, 0x007d, 0x007e, 0x0000, 0x2022, 0x2020,
- 0x2021, 0x2026, 0x2014, 0x2013, 0x0192, 0x2044, 0x2039, 0x203a, 0x2212, 0x2030,
- 0x201e, 0x201c, 0x201d, 0x2018, 0x2019, 0x201a, 0x2122, 0xfb01, 0xfb02, 0x0141,
- 0x0152, 0x0160, 0x0178, 0x017d, 0x0131, 0x0142, 0x0153, 0x0161, 0x017e, 0x0000,
- 0x20ac, 0x00a1, 0x00a2, 0x00a3, 0x00a4, 0x00a5, 0x00a6, 0x00a7, 0x00a8, 0x00a9,
- 0x00aa, 0x00ab, 0x00ac, 0x0000, 0x00ae, 0x00af, 0x00b0, 0x00b1, 0x00b2, 0x00b3,
- 0x00b4, 0x00b5, 0x00b6, 0x00b7, 0x00b8, 0x00b9, 0x00ba, 0x00bb, 0x00bc, 0x00bd,
- 0x00be, 0x00bf, 0x00c0, 0x00c1, 0x00c2, 0x00c3, 0x00c4, 0x00c5, 0x00c6, 0x00c7,
- 0x00c8, 0x00c9, 0x00ca, 0x00cb, 0x00cc, 0x00cd, 0x00ce, 0x00cf, 0x00d0, 0x00d1,
- 0x00d2, 0x00d3, 0x00d4, 0x00d5, 0x00d6, 0x00d7, 0x00d8, 0x00d9, 0x00da, 0x00db,
- 0x00dc, 0x00dd, 0x00de, 0x00df, 0x00e0, 0x00e1, 0x00e2, 0x00e3, 0x00e4, 0x00e5,
- 0x00e6, 0x00e7, 0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef,
- 0x00f0, 0x00f1, 0x00f2, 0x00f3, 0x00f4, 0x00f5, 0x00f6, 0x00f7, 0x00f8, 0x00f9,
- 0x00fa, 0x00fb, 0x00fc, 0x00fd, 0x00fe, 0x00ff
-};
-CFX_WideString PDF_DecodeText(FX_LPCBYTE src_data, FX_DWORD src_len, CFX_CharMap* pCharMap)
-{
- CFX_WideString result;
- if (src_len >= 2 && ((src_data[0] == 0xfe && src_data[1] == 0xff) || (src_data[0] == 0xff && src_data[1] == 0xfe))) {
- FX_BOOL bBE = src_data[0] == 0xfe;
- int max_chars = (src_len - 2) / 2;
- if (!max_chars) {
- return result;
- }
- if (src_data[0] == 0xff) {
- bBE = !src_data[2];
- }
- FX_LPWSTR dest_buf = result.GetBuffer(max_chars);
- FX_LPCBYTE uni_str = src_data + 2;
- int dest_pos = 0;
- for (int i = 0; i < max_chars * 2; i += 2) {
- FX_WORD unicode = bBE ? (uni_str[i] << 8 | uni_str[i + 1]) : (uni_str[i + 1] << 8 | uni_str[i]);
- if (unicode == 0x1b) {
- i += 2;
- while (i < max_chars * 2) {
- FX_WORD unicode = bBE ? (uni_str[i] << 8 | uni_str[i + 1]) : (uni_str[i + 1] << 8 | uni_str[i]);
- i += 2;
- if (unicode == 0x1b) {
- break;
- }
- }
- } else {
- dest_buf[dest_pos++] = unicode;
- }
- }
- result.ReleaseBuffer(dest_pos);
- } else if (pCharMap == NULL) {
- FX_LPWSTR dest_buf = result.GetBuffer(src_len);
- for (FX_DWORD i = 0; i < src_len; i ++) {
- dest_buf[i] = PDFDocEncoding[src_data[i]];
- }
- result.ReleaseBuffer(src_len);
- } else {
- return (*pCharMap->m_GetWideString)(pCharMap, CFX_ByteString((FX_LPCSTR)src_data, src_len));
- }
- return result;
-}
-CFX_WideString PDF_DecodeText(const CFX_ByteString& bstr, CFX_CharMap* pCharMap)
-{
- return PDF_DecodeText((FX_LPCBYTE)(FX_LPCSTR)bstr, bstr.GetLength(), pCharMap);
-}
-CFX_ByteString PDF_EncodeText(FX_LPCWSTR pString, int len, CFX_CharMap* pCharMap)
-{
- if (len == -1) {
- len = (FX_STRSIZE)FXSYS_wcslen(pString);
- }
- CFX_ByteString result;
- if (pCharMap == NULL) {
- FX_LPSTR dest_buf1 = result.GetBuffer(len);
- int i;
- for (i = 0; i < len; i ++) {
- int code;
- for (code = 0; code < 256; code ++)
- if (PDFDocEncoding[code] == pString[i]) {
- break;
- }
- if (code == 256) {
- break;
- }
- dest_buf1[i] = code;
- }
- result.ReleaseBuffer(i);
- if (i == len) {
- return result;
- }
- }
- FX_LPBYTE dest_buf2 = (FX_LPBYTE)result.GetBuffer(len * 2 + 2);
- dest_buf2[0] = 0xfe;
- dest_buf2[1] = 0xff;
- dest_buf2 += 2;
- for (int i = 0; i < len; i ++) {
- *dest_buf2++ = pString[i] >> 8;
- *dest_buf2++ = (FX_BYTE)pString[i];
- }
- result.ReleaseBuffer(len * 2 + 2);
- return result;
-}
-CFX_ByteString PDF_EncodeString(const CFX_ByteString& src, FX_BOOL bHex)
-{
- CFX_ByteTextBuf result;
- int srclen = src.GetLength();
- if (bHex) {
- result.AppendChar('<');
- for (int i = 0; i < srclen; i ++) {
- result.AppendChar("0123456789ABCDEF"[src[i] / 16]);
- result.AppendChar("0123456789ABCDEF"[src[i] % 16]);
- }
- result.AppendChar('>');
- return result.GetByteString();
- }
- result.AppendChar('(');
- for (int i = 0; i < srclen; i ++) {
- FX_BYTE ch = src[i];
- if (ch == ')' || ch == '\\' || ch == '(') {
- result.AppendChar('\\');
- } else if (ch == 0x0a) {
- result << FX_BSTRC("\\n");
- continue;
- } else if (ch == 0x0d) {
- result << FX_BSTRC("\\r");
- continue;
- }
- result.AppendChar(ch);
- }
- result.AppendChar(')');
- return result.GetByteString();
-}
-void FlateEncode(const FX_BYTE* src_buf, FX_DWORD src_size, FX_LPBYTE& dest_buf, FX_DWORD& dest_size)
-{
- CCodec_ModuleMgr* pEncoders = CPDF_ModuleMgr::Get()->GetCodecModule();
- if (pEncoders) {
- pEncoders->GetFlateModule()->Encode(src_buf, src_size, dest_buf, dest_size);
- }
-}
-void FlateEncode(FX_LPCBYTE src_buf, FX_DWORD src_size, int predictor, int Colors, int BitsPerComponent, int Columns,
- FX_LPBYTE& dest_buf, FX_DWORD& dest_size)
-{
- CCodec_ModuleMgr* pEncoders = CPDF_ModuleMgr::Get()->GetCodecModule();
- if (pEncoders) {
- pEncoders->GetFlateModule()->Encode(src_buf, src_size, predictor, Colors, BitsPerComponent, Columns, dest_buf, dest_size);
- }
-}
-FX_DWORD FlateDecode(const FX_BYTE* src_buf, FX_DWORD src_size, FX_LPBYTE& dest_buf, FX_DWORD& dest_size)
-{
- CCodec_ModuleMgr* pEncoders = CPDF_ModuleMgr::Get()->GetCodecModule();
- if (pEncoders) {
- return pEncoders->GetFlateModule()->FlateOrLZWDecode(FALSE, src_buf, src_size, FALSE, 0, 0, 0, 0, 0, dest_buf, dest_size);
- }
- return 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 "../../../include/fpdfapi/fpdf_parser.h" +#include "../../../include/fpdfapi/fpdf_module.h" +#include "../../../include/fxcodec/fx_codec.h" +#include <limits.h> +#define _STREAM_MAX_SIZE_ 20 * 1024 * 1024 +FX_DWORD _A85Decode(const FX_BYTE* src_buf, FX_DWORD src_size, FX_LPBYTE& dest_buf, FX_DWORD& dest_size) +{ + dest_size = 0; + dest_buf = NULL; + if (src_size == 0) { + return 0; + } + FX_DWORD orig_size = dest_size; + FX_DWORD zcount = 0; + FX_DWORD pos = 0; + while (pos < src_size) { + FX_BYTE ch = src_buf[pos]; + if (ch < '!' && ch != '\n' && ch != '\r' && ch != ' ' && ch != '\t') { + break; + } + if (ch == 'z') { + zcount ++; + } else if (ch > 'u') { + break; + } + pos ++; + } + if (pos == 0) { + return 0; + } + if (zcount > UINT_MAX / 4) { + return (FX_DWORD) - 1; + } + if (zcount * 4 > UINT_MAX - (pos - zcount)) { + return (FX_DWORD) - 1; + } + dest_buf = FX_Alloc(FX_BYTE, zcount * 4 + (pos - zcount)); + if (dest_buf == NULL) { + return (FX_DWORD) - 1; + } + int state = 0, res = 0; + pos = dest_size = 0; + while (pos < src_size) { + FX_BYTE ch = src_buf[pos++]; + if (ch == '\n' || ch == '\r' || ch == ' ' || ch == '\t') { + continue; + } + if (ch == 'z') { + FXSYS_memset32(dest_buf + dest_size, 0, 4); + state = 0; + res = 0; + dest_size += 4; + } else { + if (ch < '!' || ch > 'u') { + break; + } + res = res * 85 + ch - 33; + state ++; + if (state == 5) { + for (int i = 0; i < 4; i ++) { + dest_buf[dest_size++] = (FX_BYTE)(res >> (3 - i) * 8); + } + state = 0; + res = 0; + } + } + } + if (state) { + int i; + for (i = state; i < 5; i ++) { + res = res * 85 + 84; + } + for (i = 0; i < state - 1; i ++) { + dest_buf[dest_size++] = (FX_BYTE)(res >> (3 - i) * 8); + } + } + if (pos < src_size && src_buf[pos] == '>') { + pos ++; + } + return pos; +} +FX_DWORD _HexDecode(const FX_BYTE* src_buf, FX_DWORD src_size, FX_LPBYTE& dest_buf, FX_DWORD& dest_size) +{ + FX_DWORD orig_size = dest_size; + FX_DWORD i; + for (i = 0; i < src_size; i ++) + if (src_buf[i] == '>') { + break; + } + dest_buf = FX_Alloc( FX_BYTE, i / 2 + 1); + dest_size = 0; + FX_BOOL bFirstDigit = TRUE; + for (i = 0; i < src_size; i ++) { + FX_BYTE ch = src_buf[i]; + if (ch == ' ' || ch == '\n' || ch == '\t' || ch == '\r') { + continue; + } + int digit; + if (ch <= '9' && ch >= '0') { + digit = ch - '0'; + } else if (ch <= 'f' && ch >= 'a') { + digit = ch - 'a' + 10; + } else if (ch <= 'F' && ch >= 'A') { + digit = ch - 'A' + 10; + } else if (ch == '>') { + i ++; + break; + } else { + continue; + } + if (bFirstDigit) { + dest_buf[dest_size] = digit * 16; + } else { + dest_buf[dest_size ++] += digit; + } + bFirstDigit = !bFirstDigit; + } + if (!bFirstDigit) { + dest_size ++; + } + return i; +} +FX_DWORD RunLengthDecode(const FX_BYTE* src_buf, FX_DWORD src_size, FX_LPBYTE& dest_buf, FX_DWORD& dest_size) +{ + FX_DWORD orig_size = dest_size; + FX_DWORD i = 0; + FX_DWORD old; + dest_size = 0; + while (i < src_size) { + if (src_buf[i] < 128) { + old = dest_size; + dest_size += src_buf[i] + 1; + if (dest_size < old) { + return (FX_DWORD) - 1; + } + i += src_buf[i] + 2; + } else if (src_buf[i] > 128) { + old = dest_size; + dest_size += 257 - src_buf[i]; + if (dest_size < old) { + return (FX_DWORD) - 1; + } + i += 2; + } else { + break; + } + } + if (dest_size >= _STREAM_MAX_SIZE_) { + return -1; + } + dest_buf = FX_Alloc( FX_BYTE, dest_size); + if (!dest_buf) { + return -1; + } + i = 0; + int dest_count = 0; + while (i < src_size) { + if (src_buf[i] < 128) { + FX_DWORD copy_len = src_buf[i] + 1; + FX_DWORD buf_left = src_size - i - 1; + if (buf_left < copy_len) { + FX_DWORD delta = copy_len - buf_left; + copy_len = buf_left; + FXSYS_memset8(dest_buf + dest_count + copy_len, '\0', delta); + } + FXSYS_memcpy32(dest_buf + dest_count, src_buf + i + 1, copy_len); + dest_count += src_buf[i] + 1; + i += src_buf[i] + 2; + } else if (src_buf[i] > 128) { + int fill = 0; + if (i < src_size - 1) { + fill = src_buf[i + 1]; + } + FXSYS_memset8(dest_buf + dest_count, fill, 257 - src_buf[i]); + dest_count += 257 - src_buf[i]; + i += 2; + } else { + break; + } + } + FX_DWORD ret = i + 1; + if (ret > src_size) { + ret = src_size; + } + return ret; +} +ICodec_ScanlineDecoder* FPDFAPI_CreateFaxDecoder(FX_LPCBYTE src_buf, FX_DWORD src_size, int width, int height, + const CPDF_Dictionary* pParams) +{ + int K = 0; + FX_BOOL EndOfLine = FALSE; + FX_BOOL ByteAlign = FALSE; + FX_BOOL BlackIs1 = FALSE; + FX_BOOL Columns = 1728; + FX_BOOL Rows = 0; + if (pParams) { + K = pParams->GetInteger(FX_BSTRC("K")); + EndOfLine = pParams->GetInteger(FX_BSTRC("EndOfLine")); + ByteAlign = pParams->GetInteger(FX_BSTRC("EncodedByteAlign")); + BlackIs1 = pParams->GetInteger(FX_BSTRC("BlackIs1")); + Columns = pParams->GetInteger(FX_BSTRC("Columns"), 1728); + Rows = pParams->GetInteger(FX_BSTRC("Rows")); + if (Rows > USHRT_MAX) { + Rows = 0; + } + if (Columns <= 0 || Rows < 0 || Columns > USHRT_MAX || Rows > USHRT_MAX) { + return NULL; + } + } + return CPDF_ModuleMgr::Get()->GetFaxModule()->CreateDecoder(src_buf, src_size, width, height, + K, EndOfLine, ByteAlign, BlackIs1, Columns, Rows); +} +static FX_BOOL CheckFlateDecodeParams(int Colors, int BitsPerComponent, int Columns) +{ + if (Columns < 0) { + return FALSE; + } + int check = Columns; + if (Colors < 0 || (check > 0 && Colors > INT_MAX / check)) { + return FALSE; + } + check *= Colors; + if (BitsPerComponent < 0 || + (check > 0 && BitsPerComponent > INT_MAX / check)) { + return FALSE; + } + check *= BitsPerComponent; + if (check > INT_MAX - 7) { + return FALSE; + } + return TRUE; +} +ICodec_ScanlineDecoder* FPDFAPI_CreateFlateDecoder(FX_LPCBYTE src_buf, FX_DWORD src_size, int width, int height, + int nComps, int bpc, const CPDF_Dictionary* pParams) +{ + int predictor = 0; + FX_BOOL bEarlyChange = TRUE; + int Colors = 0, BitsPerComponent = 0, Columns = 0; + if (pParams) { + predictor = ((CPDF_Dictionary*)pParams)->GetInteger(FX_BSTRC("Predictor")); + bEarlyChange = ((CPDF_Dictionary*)pParams)->GetInteger(FX_BSTRC("EarlyChange"), 1); + Colors = pParams->GetInteger(FX_BSTRC("Colors"), 1); + BitsPerComponent = pParams->GetInteger(FX_BSTRC("BitsPerComponent"), 8); + Columns = pParams->GetInteger(FX_BSTRC("Columns"), 1); + if (!CheckFlateDecodeParams(Colors, BitsPerComponent, Columns)) { + return NULL; + } + } + return CPDF_ModuleMgr::Get()->GetFlateModule()->CreateDecoder(src_buf, src_size, width, height, + nComps, bpc, predictor, Colors, BitsPerComponent, Columns); +} +FX_DWORD FPDFAPI_FlateOrLZWDecode(FX_BOOL bLZW, const FX_BYTE* src_buf, FX_DWORD src_size, CPDF_Dictionary* pParams, + FX_DWORD estimated_size, FX_LPBYTE& dest_buf, FX_DWORD& dest_size) +{ + int predictor = 0; + FX_BOOL bEarlyChange = TRUE; + int Colors = 0, BitsPerComponent = 0, Columns = 0; + if (pParams) { + predictor = ((CPDF_Dictionary*)pParams)->GetInteger(FX_BSTRC("Predictor")); + bEarlyChange = ((CPDF_Dictionary*)pParams)->GetInteger(FX_BSTRC("EarlyChange"), 1); + Colors = pParams->GetInteger(FX_BSTRC("Colors"), 1); + BitsPerComponent = pParams->GetInteger(FX_BSTRC("BitsPerComponent"), 8); + Columns = pParams->GetInteger(FX_BSTRC("Columns"), 1); + if (!CheckFlateDecodeParams(Colors, BitsPerComponent, Columns)) { + return (FX_DWORD) - 1; + } + } + return CPDF_ModuleMgr::Get()->GetFlateModule()->FlateOrLZWDecode(bLZW, src_buf, src_size, + bEarlyChange, predictor, Colors, BitsPerComponent, Columns, estimated_size, + dest_buf, dest_size); +} +FX_BOOL PDF_DataDecode(FX_LPCBYTE src_buf, FX_DWORD src_size, const CPDF_Dictionary* pDict, + FX_LPBYTE& dest_buf, FX_DWORD& dest_size, CFX_ByteString& ImageEncoding, + CPDF_Dictionary*& pImageParms, FX_DWORD last_estimated_size, FX_BOOL bImageAcc) + +{ + CPDF_Object* pDecoder = pDict->GetElementValue(FX_BSTRC("Filter")); + if (pDecoder == NULL || (pDecoder->GetType() != PDFOBJ_ARRAY && pDecoder->GetType() != PDFOBJ_NAME)) { + return FALSE; + } + CPDF_Object* pParams = pDict->GetElementValue(FX_BSTRC("DecodeParms")); + CFX_ByteStringArray DecoderList; + CFX_PtrArray ParamList; + if (pDecoder->GetType() == PDFOBJ_ARRAY) { + if (pParams && pParams->GetType() != PDFOBJ_ARRAY) { + pParams = NULL; + } + CPDF_Array* pDecoders = (CPDF_Array*)pDecoder; + for (FX_DWORD i = 0; i < pDecoders->GetCount(); i ++) { + CFX_ByteStringC str = pDecoders->GetConstString(i); + DecoderList.Add(str); + if (pParams) { + ParamList.Add(((CPDF_Array*)pParams)->GetDict(i)); + } else { + ParamList.Add(NULL); + } + } + } else { + DecoderList.Add(pDecoder->GetConstString()); + ParamList.Add(pParams->GetDict()); + } + FX_LPBYTE last_buf = (FX_LPBYTE)src_buf; + FX_DWORD last_size = src_size; + for (int i = 0; i < DecoderList.GetSize(); i ++) { + int estimated_size = i == DecoderList.GetSize() - 1 ? last_estimated_size : 0; + CFX_ByteString decoder = DecoderList[i]; + CPDF_Dictionary* pParam = (CPDF_Dictionary*)ParamList[i]; + FX_LPBYTE new_buf = NULL; + FX_DWORD new_size = (FX_DWORD) - 1; + int offset = -1; + if (decoder == FX_BSTRC("FlateDecode") || decoder == FX_BSTRC("Fl")) { + if (bImageAcc && i == DecoderList.GetSize() - 1) { + ImageEncoding = FX_BSTRC("FlateDecode"); + dest_buf = (FX_LPBYTE)last_buf; + dest_size = last_size; + pImageParms = pParam; + return TRUE; + } else { + offset = FPDFAPI_FlateOrLZWDecode(FALSE, last_buf, last_size, pParam, estimated_size, new_buf, new_size); + } + } else if (decoder == FX_BSTRC("LZWDecode") || decoder == FX_BSTRC("LZW")) { + offset = FPDFAPI_FlateOrLZWDecode(TRUE, last_buf, last_size, pParam, estimated_size, new_buf, new_size); + } else if (decoder == FX_BSTRC("ASCII85Decode") || decoder == FX_BSTRC("A85")) { + offset = _A85Decode(last_buf, last_size, new_buf, new_size); + } else if (decoder == FX_BSTRC("ASCIIHexDecode") || decoder == FX_BSTRC("AHx")) { + offset = _HexDecode(last_buf, last_size, new_buf, new_size); + } else if (decoder == FX_BSTRC("RunLengthDecode") || decoder == FX_BSTRC("RL")) { + if (bImageAcc && i == DecoderList.GetSize() - 1) { + ImageEncoding = FX_BSTRC("RunLengthDecode"); + dest_buf = (FX_LPBYTE)last_buf; + dest_size = last_size; + pImageParms = pParam; + return TRUE; + } + offset = RunLengthDecode(last_buf, last_size, new_buf, new_size); + } else { + if (decoder == FX_BSTRC("DCT")) { + decoder = "DCTDecode"; + } else if (decoder == FX_BSTRC("CCF")) { + decoder = "CCITTFaxDecode"; + } else if (decoder == FX_BSTRC("Crypt")) { + continue; + } + ImageEncoding = decoder; + pImageParms = pParam; + dest_buf = (FX_LPBYTE)last_buf; + dest_size = last_size; + return TRUE; + } + if (last_buf != src_buf) { + FX_Free(last_buf); + } + if (offset == -1) { + return FALSE; + } + last_buf = new_buf; + last_size = new_size; + } + ImageEncoding = ""; + pImageParms = NULL; + dest_buf = last_buf; + dest_size = last_size; + return TRUE; +} +extern const FX_WORD PDFDocEncoding[256] = { + 0x0000, 0x0001, 0x0002, 0x0003, 0x0004, 0x0005, 0x0006, 0x0007, 0x0008, 0x0009, + 0x000a, 0x000b, 0x000c, 0x000d, 0x000e, 0x000f, 0x0010, 0x0011, 0x0012, 0x0013, + 0x0014, 0x0015, 0x0016, 0x0017, 0x02d8, 0x02c7, 0x02c6, 0x02d9, 0x02dd, 0x02db, + 0x02da, 0x02dc, 0x0020, 0x0021, 0x0022, 0x0023, 0x0024, 0x0025, 0x0026, 0x0027, + 0x0028, 0x0029, 0x002a, 0x002b, 0x002c, 0x002d, 0x002e, 0x002f, 0x0030, 0x0031, + 0x0032, 0x0033, 0x0034, 0x0035, 0x0036, 0x0037, 0x0038, 0x0039, 0x003a, 0x003b, + 0x003c, 0x003d, 0x003e, 0x003f, 0x0040, 0x0041, 0x0042, 0x0043, 0x0044, 0x0045, + 0x0046, 0x0047, 0x0048, 0x0049, 0x004a, 0x004b, 0x004c, 0x004d, 0x004e, 0x004f, + 0x0050, 0x0051, 0x0052, 0x0053, 0x0054, 0x0055, 0x0056, 0x0057, 0x0058, 0x0059, + 0x005a, 0x005b, 0x005c, 0x005d, 0x005e, 0x005f, 0x0060, 0x0061, 0x0062, 0x0063, + 0x0064, 0x0065, 0x0066, 0x0067, 0x0068, 0x0069, 0x006a, 0x006b, 0x006c, 0x006d, + 0x006e, 0x006f, 0x0070, 0x0071, 0x0072, 0x0073, 0x0074, 0x0075, 0x0076, 0x0077, + 0x0078, 0x0079, 0x007a, 0x007b, 0x007c, 0x007d, 0x007e, 0x0000, 0x2022, 0x2020, + 0x2021, 0x2026, 0x2014, 0x2013, 0x0192, 0x2044, 0x2039, 0x203a, 0x2212, 0x2030, + 0x201e, 0x201c, 0x201d, 0x2018, 0x2019, 0x201a, 0x2122, 0xfb01, 0xfb02, 0x0141, + 0x0152, 0x0160, 0x0178, 0x017d, 0x0131, 0x0142, 0x0153, 0x0161, 0x017e, 0x0000, + 0x20ac, 0x00a1, 0x00a2, 0x00a3, 0x00a4, 0x00a5, 0x00a6, 0x00a7, 0x00a8, 0x00a9, + 0x00aa, 0x00ab, 0x00ac, 0x0000, 0x00ae, 0x00af, 0x00b0, 0x00b1, 0x00b2, 0x00b3, + 0x00b4, 0x00b5, 0x00b6, 0x00b7, 0x00b8, 0x00b9, 0x00ba, 0x00bb, 0x00bc, 0x00bd, + 0x00be, 0x00bf, 0x00c0, 0x00c1, 0x00c2, 0x00c3, 0x00c4, 0x00c5, 0x00c6, 0x00c7, + 0x00c8, 0x00c9, 0x00ca, 0x00cb, 0x00cc, 0x00cd, 0x00ce, 0x00cf, 0x00d0, 0x00d1, + 0x00d2, 0x00d3, 0x00d4, 0x00d5, 0x00d6, 0x00d7, 0x00d8, 0x00d9, 0x00da, 0x00db, + 0x00dc, 0x00dd, 0x00de, 0x00df, 0x00e0, 0x00e1, 0x00e2, 0x00e3, 0x00e4, 0x00e5, + 0x00e6, 0x00e7, 0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x00ec, 0x00ed, 0x00ee, 0x00ef, + 0x00f0, 0x00f1, 0x00f2, 0x00f3, 0x00f4, 0x00f5, 0x00f6, 0x00f7, 0x00f8, 0x00f9, + 0x00fa, 0x00fb, 0x00fc, 0x00fd, 0x00fe, 0x00ff +}; +CFX_WideString PDF_DecodeText(FX_LPCBYTE src_data, FX_DWORD src_len, CFX_CharMap* pCharMap) +{ + CFX_WideString result; + if (src_len >= 2 && ((src_data[0] == 0xfe && src_data[1] == 0xff) || (src_data[0] == 0xff && src_data[1] == 0xfe))) { + FX_BOOL bBE = src_data[0] == 0xfe; + int max_chars = (src_len - 2) / 2; + if (!max_chars) { + return result; + } + if (src_data[0] == 0xff) { + bBE = !src_data[2]; + } + FX_LPWSTR dest_buf = result.GetBuffer(max_chars); + FX_LPCBYTE uni_str = src_data + 2; + int dest_pos = 0; + for (int i = 0; i < max_chars * 2; i += 2) { + FX_WORD unicode = bBE ? (uni_str[i] << 8 | uni_str[i + 1]) : (uni_str[i + 1] << 8 | uni_str[i]); + if (unicode == 0x1b) { + i += 2; + while (i < max_chars * 2) { + FX_WORD unicode = bBE ? (uni_str[i] << 8 | uni_str[i + 1]) : (uni_str[i + 1] << 8 | uni_str[i]); + i += 2; + if (unicode == 0x1b) { + break; + } + } + } else { + dest_buf[dest_pos++] = unicode; + } + } + result.ReleaseBuffer(dest_pos); + } else if (pCharMap == NULL) { + FX_LPWSTR dest_buf = result.GetBuffer(src_len); + for (FX_DWORD i = 0; i < src_len; i ++) { + dest_buf[i] = PDFDocEncoding[src_data[i]]; + } + result.ReleaseBuffer(src_len); + } else { + return (*pCharMap->m_GetWideString)(pCharMap, CFX_ByteString((FX_LPCSTR)src_data, src_len)); + } + return result; +} +CFX_WideString PDF_DecodeText(const CFX_ByteString& bstr, CFX_CharMap* pCharMap) +{ + return PDF_DecodeText((FX_LPCBYTE)(FX_LPCSTR)bstr, bstr.GetLength(), pCharMap); +} +CFX_ByteString PDF_EncodeText(FX_LPCWSTR pString, int len, CFX_CharMap* pCharMap) +{ + if (len == -1) { + len = (FX_STRSIZE)FXSYS_wcslen(pString); + } + CFX_ByteString result; + if (pCharMap == NULL) { + FX_LPSTR dest_buf1 = result.GetBuffer(len); + int i; + for (i = 0; i < len; i ++) { + int code; + for (code = 0; code < 256; code ++) + if (PDFDocEncoding[code] == pString[i]) { + break; + } + if (code == 256) { + break; + } + dest_buf1[i] = code; + } + result.ReleaseBuffer(i); + if (i == len) { + return result; + } + } + FX_LPBYTE dest_buf2 = (FX_LPBYTE)result.GetBuffer(len * 2 + 2); + dest_buf2[0] = 0xfe; + dest_buf2[1] = 0xff; + dest_buf2 += 2; + for (int i = 0; i < len; i ++) { + *dest_buf2++ = pString[i] >> 8; + *dest_buf2++ = (FX_BYTE)pString[i]; + } + result.ReleaseBuffer(len * 2 + 2); + return result; +} +CFX_ByteString PDF_EncodeString(const CFX_ByteString& src, FX_BOOL bHex) +{ + CFX_ByteTextBuf result; + int srclen = src.GetLength(); + if (bHex) { + result.AppendChar('<'); + for (int i = 0; i < srclen; i ++) { + result.AppendChar("0123456789ABCDEF"[src[i] / 16]); + result.AppendChar("0123456789ABCDEF"[src[i] % 16]); + } + result.AppendChar('>'); + return result.GetByteString(); + } + result.AppendChar('('); + for (int i = 0; i < srclen; i ++) { + FX_BYTE ch = src[i]; + if (ch == ')' || ch == '\\' || ch == '(') { + result.AppendChar('\\'); + } else if (ch == 0x0a) { + result << FX_BSTRC("\\n"); + continue; + } else if (ch == 0x0d) { + result << FX_BSTRC("\\r"); + continue; + } + result.AppendChar(ch); + } + result.AppendChar(')'); + return result.GetByteString(); +} +void FlateEncode(const FX_BYTE* src_buf, FX_DWORD src_size, FX_LPBYTE& dest_buf, FX_DWORD& dest_size) +{ + CCodec_ModuleMgr* pEncoders = CPDF_ModuleMgr::Get()->GetCodecModule(); + if (pEncoders) { + pEncoders->GetFlateModule()->Encode(src_buf, src_size, dest_buf, dest_size); + } +} +void FlateEncode(FX_LPCBYTE src_buf, FX_DWORD src_size, int predictor, int Colors, int BitsPerComponent, int Columns, + FX_LPBYTE& dest_buf, FX_DWORD& dest_size) +{ + CCodec_ModuleMgr* pEncoders = CPDF_ModuleMgr::Get()->GetCodecModule(); + if (pEncoders) { + pEncoders->GetFlateModule()->Encode(src_buf, src_size, predictor, Colors, BitsPerComponent, Columns, dest_buf, dest_size); + } +} +FX_DWORD FlateDecode(const FX_BYTE* src_buf, FX_DWORD src_size, FX_LPBYTE& dest_buf, FX_DWORD& dest_size) +{ + CCodec_ModuleMgr* pEncoders = CPDF_ModuleMgr::Get()->GetCodecModule(); + if (pEncoders) { + return pEncoders->GetFlateModule()->FlateOrLZWDecode(FALSE, src_buf, src_size, FALSE, 0, 0, 0, 0, 0, dest_buf, dest_size); + } + return 0; +} |