1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
|
// 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
#ifndef CORE_SRC_FPDFAPI_FPDF_PAGE_PAGEINT_H_
#define CORE_SRC_FPDFAPI_FPDF_PAGE_PAGEINT_H_
#include <map>
#include "../../../include/fpdfapi/fpdf_pageobj.h"
#define PARSE_STEP_LIMIT 100
#define STREAM_PARSE_BUFSIZE 20480
class CPDF_StreamParser
{
public:
CPDF_StreamParser(const uint8_t* pData, FX_DWORD dwSize);
~CPDF_StreamParser();
CPDF_Stream* ReadInlineStream(CPDF_Document* pDoc, CPDF_Dictionary* pDict, CPDF_Object* pCSObj, FX_BOOL bDecode);
typedef enum { EndOfData, Number, Keyword, Name, Others } SyntaxType;
SyntaxType ParseNextElement();
uint8_t* GetWordBuf()
{
return m_WordBuffer;
}
FX_DWORD GetWordSize()
{
return m_WordSize;
}
CPDF_Object* GetObject()
{
CPDF_Object* pObj = m_pLastObj;
m_pLastObj = NULL;
return pObj;
}
FX_DWORD GetPos()
{
return m_Pos;
}
void SetPos(FX_DWORD pos)
{
m_Pos = pos;
}
CPDF_Object* ReadNextObject(FX_BOOL bAllowNestedArray = FALSE, FX_BOOL bInArray = FALSE);
void SkipPathObject();
protected:
void GetNextWord(FX_BOOL& bIsNumber);
CFX_ByteString ReadString();
CFX_ByteString ReadHexString();
const uint8_t* m_pBuf;
FX_DWORD m_Size;
FX_DWORD m_Pos;
uint8_t m_WordBuffer[256];
FX_DWORD m_WordSize;
CPDF_Object* m_pLastObj;
};
typedef enum {
PDFOP_CloseFillStrokePath = 0, PDFOP_FillStrokePath,
PDFOP_CloseEOFillStrokePath, PDFOP_EOFillStrokePath,
PDFOP_BeginMarkedContent_Dictionary, PDFOP_BeginImage,
PDFOP_BeginMarkedContent, PDFOP_BeginText,
PDFOP_BeginSectionUndefined, PDFOP_CurveTo_123,
PDFOP_ConcatMatrix, PDFOP_SetColorSpace_Fill,
PDFOP_SetColorSpace_Stroke, PDFOP_SetDash,
PDFOP_SetCharWidth, PDFOP_SetCachedDevice,
PDFOP_ExecuteXObject, PDFOP_MarkPlace_Dictionary,
PDFOP_EndImage, PDFOP_EndMarkedContent,
PDFOP_EndText, PDFOP_EndSectionUndefined,
PDFOP_FillPath, PDFOP_FillPathOld,
PDFOP_EOFillPath, PDFOP_SetGray_Fill,
PDFOP_SetGray_Stroke, PDFOP_SetExtendGraphState,
PDFOP_ClosePath, PDFOP_SetFlat,
PDFOP_BeginImageData, PDFOP_SetLineJoin,
PDFOP_SetLineCap, PDFOP_SetCMYKColor_Fill,
PDFOP_SetCMYKColor_Stroke, PDFOP_LineTo,
PDFOP_MoveTo, PDFOP_SetMiterLimit,
PDFOP_MarkPlace, PDFOP_EndPath,
PDFOP_SaveGraphState, PDFOP_RestoreGraphState,
PDFOP_Rectangle, PDFOP_SetRGBColor_Fill,
PDFOP_SetRGBColor_Stroke, PDFOP_SetRenderIntent,
PDFOP_CloseStrokePath, PDFOP_StrokePath,
PDFOP_SetColor_Fill, PDFOP_SetColor_Stroke,
PDFOP_SetColorPS_Fill, PDFOP_SetColorPS_Stroke,
PDFOP_ShadeFill, PDFOP_SetCharSpace,
PDFOP_MoveTextPoint, PDFOP_MoveTextPoint_SetLeading,
PDFOP_SetFont, PDFOP_ShowText,
PDFOP_ShowText_Positioning, PDFOP_SetTextLeading,
PDFOP_SetTextMatrix, PDFOP_SetTextRenderMode,
PDFOP_SetTextRise, PDFOP_SetWordSpace,
PDFOP_SetHorzScale, PDFOP_MoveToNextLine,
PDFOP_CurveTo_23, PDFOP_SetLineWidth,
PDFOP_Clip, PDFOP_EOClip,
PDFOP_CurveTo_13, PDFOP_NextLineShowText,
PDFOP_NextLineShowText_Space, PDFOP_Invalid
} PDFOP;
#define PARAM_BUF_SIZE 16
typedef struct {
int m_Type;
union {
struct {
FX_BOOL m_bInteger;
union {
int m_Integer;
FX_FLOAT m_Float;
};
} m_Number;
CPDF_Object* m_pObject;
struct {
int m_Len;
char m_Buffer[32];
} m_Name;
};
} _ContentParam;
#define _FPDF_MAX_FORM_LEVEL_ 30
#define _FPDF_MAX_TYPE3_FORM_LEVEL_ 4
#define _FPDF_MAX_OBJECT_STACK_SIZE_ 512
class CPDF_StreamContentParser
{
public:
CPDF_StreamContentParser();
~CPDF_StreamContentParser();
FX_BOOL Initialize();
void PrepareParse(CPDF_Document* pDoc, CPDF_Dictionary* pPageResources, CPDF_Dictionary* pParentResources,
CFX_AffineMatrix* pmtContentToUser,
CPDF_PageObjects* pObjList, CPDF_Dictionary* pResources,
CFX_FloatRect* pBBox, CPDF_ParseOptions* pOptions,
CPDF_AllStates* pAllStates, int level);
CPDF_Document* m_pDocument;
CPDF_Dictionary* m_pPageResources;
CPDF_Dictionary* m_pParentResources;
CPDF_PageObjects* m_pObjectList;
CPDF_Dictionary* m_pResources;
int m_Level;
CFX_AffineMatrix m_mtContentToUser;
CFX_FloatRect m_BBox;
CPDF_ParseOptions m_Options;
_ContentParam m_ParamBuf1[PARAM_BUF_SIZE];
FX_DWORD m_ParamStartPos;
FX_DWORD m_ParamCount;
void AddNumberParam(const FX_CHAR* str, int len);
void AddObjectParam(CPDF_Object* pObj);
void AddNameParam(const FX_CHAR* name, int size);
int GetNextParamPos();
void ClearAllParams();
CPDF_Object* GetObject(FX_DWORD index);
CFX_ByteString GetString(FX_DWORD index);
FX_FLOAT GetNumber(FX_DWORD index);
FX_FLOAT GetNumber16(FX_DWORD index);
int GetInteger(FX_DWORD index)
{
return (int32_t)(GetNumber(index));
}
FX_BOOL OnOperator(const FX_CHAR* op);
void BigCaseCaller(int index);
FX_BOOL m_bAbort;
CPDF_StreamParser* m_pSyntax;
FX_DWORD GetParsePos()
{
return m_pSyntax->GetPos();
}
CPDF_AllStates* m_pCurStates;
CPDF_ContentMark m_CurContentMark;
CFX_PtrArray m_ClipTextList;
CPDF_TextObject* m_pLastTextObject;
FX_FLOAT m_DefFontSize;
void AddTextObject(CFX_ByteString* pText, FX_FLOAT fInitKerning, FX_FLOAT* pKerning, int count);
void ConvertUserSpace(FX_FLOAT& x, FX_FLOAT& y);
void ConvertTextSpace(FX_FLOAT& x, FX_FLOAT& y);
void OnChangeTextMatrix();
FX_DWORD Parse(const uint8_t* pData, FX_DWORD dwSize, FX_DWORD max_cost);
void ParsePathObject();
int m_CompatCount;
FX_PATHPOINT* m_pPathPoints;
int m_PathPointCount;
int m_PathAllocSize;
FX_FLOAT m_PathStartX, m_PathStartY;
FX_FLOAT m_PathCurrentX, m_PathCurrentY;
int m_PathClipType;
void AddPathPoint(FX_FLOAT x, FX_FLOAT y, int flag);
void AddPathRect(FX_FLOAT x, FX_FLOAT y, FX_FLOAT w, FX_FLOAT h);
void AddPathObject(int FillType, FX_BOOL bStroke);
CPDF_ImageObject* AddImage(CPDF_Stream* pStream, CPDF_Image* pImage, FX_BOOL bInline);
void AddDuplicateImage();
void AddForm(CPDF_Stream*);
CFX_ByteString m_LastImageName;
CPDF_Image* m_pLastImage;
CFX_BinaryBuf m_LastImageDict, m_LastImageData;
CPDF_Dictionary* m_pLastImageDict;
CPDF_Dictionary* m_pLastCloneImageDict;
FX_BOOL m_bReleaseLastDict;
FX_BOOL m_bSameLastDict;
void SetGraphicStates(CPDF_PageObject* pObj, FX_BOOL bColor, FX_BOOL bText, FX_BOOL bGraph);
FX_BOOL m_bColored;
FX_FLOAT m_Type3Data[6];
FX_BOOL m_bResourceMissing;
CFX_PtrArray m_StateStack;
void SaveStates(CPDF_AllStates*);
void RestoreStates(CPDF_AllStates*);
CPDF_Font* FindFont(const CFX_ByteString& name);
CPDF_ColorSpace* FindColorSpace(const CFX_ByteString& name);
CPDF_Pattern* FindPattern(const CFX_ByteString& name, FX_BOOL bShading);
CPDF_Object* FindResourceObj(const CFX_ByteStringC& type, const CFX_ByteString& name);
void Handle_CloseFillStrokePath();
void Handle_FillStrokePath();
void Handle_CloseEOFillStrokePath();
void Handle_EOFillStrokePath();
void Handle_BeginMarkedContent_Dictionary();
void Handle_BeginImage();
void Handle_BeginMarkedContent();
void Handle_BeginText();
void Handle_BeginSectionUndefined();
void Handle_CurveTo_123();
void Handle_ConcatMatrix();
void Handle_SetColorSpace_Fill();
void Handle_SetColorSpace_Stroke();
void Handle_SetDash();
void Handle_SetCharWidth();
void Handle_SetCachedDevice();
void Handle_ExecuteXObject();
void Handle_MarkPlace_Dictionary();
void Handle_EndImage();
void Handle_EndMarkedContent();
void Handle_EndText();
void Handle_EndSectionUndefined();
void Handle_FillPath();
void Handle_FillPathOld();
void Handle_EOFillPath();
void Handle_SetGray_Fill();
void Handle_SetGray_Stroke();
void Handle_SetExtendGraphState();
void Handle_ClosePath();
void Handle_SetFlat();
void Handle_BeginImageData();
void Handle_SetLineJoin();
void Handle_SetLineCap();
void Handle_SetCMYKColor_Fill();
void Handle_SetCMYKColor_Stroke();
void Handle_LineTo();
void Handle_MoveTo();
void Handle_SetMiterLimit();
void Handle_MarkPlace();
void Handle_EndPath();
void Handle_SaveGraphState();
void Handle_RestoreGraphState();
void Handle_Rectangle();
void Handle_SetRGBColor_Fill();
void Handle_SetRGBColor_Stroke();
void Handle_SetRenderIntent();
void Handle_CloseStrokePath();
void Handle_StrokePath();
void Handle_SetColor_Fill();
void Handle_SetColor_Stroke();
void Handle_SetColorPS_Fill();
void Handle_SetColorPS_Stroke();
void Handle_ShadeFill();
void Handle_SetCharSpace();
void Handle_MoveTextPoint();
void Handle_MoveTextPoint_SetLeading();
void Handle_SetFont();
void Handle_ShowText();
void Handle_ShowText_Positioning();
void Handle_SetTextLeading();
void Handle_SetTextMatrix();
void Handle_SetTextRenderMode();
void Handle_SetTextRise();
void Handle_SetWordSpace();
void Handle_SetHorzScale();
void Handle_MoveToNextLine();
void Handle_CurveTo_23();
void Handle_SetLineWidth();
void Handle_Clip();
void Handle_EOClip();
void Handle_CurveTo_13();
void Handle_NextLineShowText();
void Handle_NextLineShowText_Space();
void Handle_Invalid();
};
class CPDF_ContentParser
{
public:
CPDF_ContentParser();
~CPDF_ContentParser();
typedef enum { Ready, ToBeContinued, Done } ParseStatus;
ParseStatus GetStatus()
{
return m_Status;
}
void Start(CPDF_Page* pPage, CPDF_ParseOptions* pOptions);
void Start(CPDF_Form* pForm, CPDF_AllStates* pGraphicStates, CFX_AffineMatrix* pParentMatrix,
CPDF_Type3Char* pType3Char, CPDF_ParseOptions* pOptions, int level);
void Continue(IFX_Pause* pPause);
int EstimateProgress();
protected:
void Clear();
ParseStatus m_Status;
CPDF_PageObjects* m_pObjects;
FX_BOOL m_bForm;
CPDF_ParseOptions m_Options;
CPDF_Type3Char* m_pType3Char;
int m_InternalStage;
CPDF_StreamAcc* m_pSingleStream;
CPDF_StreamAcc** m_pStreamArray;
FX_DWORD m_nStreams;
uint8_t* m_pData;
FX_DWORD m_Size;
class CPDF_StreamContentParser* m_pParser;
FX_DWORD m_CurrentOffset;
CPDF_StreamFilter* m_pStreamFilter;
};
class CPDF_AllStates : public CPDF_GraphicStates
{
public:
CPDF_AllStates();
~CPDF_AllStates();
void Copy(const CPDF_AllStates& src);
void ProcessExtGS(CPDF_Dictionary* pGS, CPDF_StreamContentParser* pParser);
void SetLineDash(CPDF_Array*, FX_FLOAT, FX_FLOAT scale);
CFX_AffineMatrix m_TextMatrix, m_CTM, m_ParentMatrix;
FX_FLOAT m_TextX, m_TextY, m_TextLineX, m_TextLineY;
FX_FLOAT m_TextLeading, m_TextRise, m_TextHorzScale;
};
template <class KeyType, class ValueType>
KeyType PDF_DocPageData_FindValue(const CFX_MapPtrTemplate<KeyType, CPDF_CountedObject<ValueType>*> &map, ValueType findValue, CPDF_CountedObject<ValueType>*& findData)
{
FX_POSITION pos = map.GetStartPosition();
while (pos) {
KeyType findKey;
map.GetNextAssoc(pos, findKey, findData);
if (findData->m_Obj == findValue) {
return findKey;
}
}
findData = NULL;
return (KeyType)(uintptr_t)NULL;
}
template <class KeyType, class ValueType>
FX_BOOL PDF_DocPageData_Release(CFX_MapPtrTemplate<KeyType, CPDF_CountedObject<ValueType>*> &map, KeyType findKey, ValueType findValue, FX_BOOL bForce = FALSE)
{
if (!findKey && !findValue) {
return FALSE;
}
CPDF_CountedObject<ValueType>* findData = NULL;
if (!findKey) {
findKey = PDF_DocPageData_FindValue<KeyType, ValueType>(map, findValue, findData);
} else if (!map.Lookup(findKey, findData)) {
return FALSE;
}
if (findData && ((-- findData->m_nCount) == 0 || bForce)) {
delete findData->m_Obj;
delete findData;
map.RemoveKey(findKey);
return TRUE;
}
return FALSE;
}
class CPDF_DocPageData
{
public:
explicit CPDF_DocPageData(CPDF_Document *pPDFDoc);
~CPDF_DocPageData();
void Clear(FX_BOOL bRelease = FALSE);
CPDF_Font* GetFont(CPDF_Dictionary* pFontDict, FX_BOOL findOnly);
CPDF_Font* GetStandardFont(const CFX_ByteStringC& fontName, CPDF_FontEncoding* pEncoding);
void ReleaseFont(CPDF_Dictionary* pFontDict);
CPDF_ColorSpace* GetColorSpace(CPDF_Object* pCSObj, CPDF_Dictionary* pResources);
CPDF_ColorSpace* GetCopiedColorSpace(CPDF_Object* pCSObj);
void ReleaseColorSpace(CPDF_Object* pColorSpace);
CPDF_Pattern* GetPattern(CPDF_Object* pPatternObj, FX_BOOL bShading, const CFX_AffineMatrix* matrix);
void ReleasePattern(CPDF_Object* pPatternObj);
CPDF_Image* GetImage(CPDF_Object* pImageStream);
void ReleaseImage(CPDF_Object* pImageStream);
CPDF_IccProfile* GetIccProfile(CPDF_Stream* pIccProfileStream);
void ReleaseIccProfile(CPDF_Stream* pIccProfileStream, CPDF_IccProfile* pIccProfile);
CPDF_StreamAcc* GetFontFileStreamAcc(CPDF_Stream* pFontStream);
void ReleaseFontFileStreamAcc(CPDF_Stream* pFontStream, FX_BOOL bForce = FALSE);
FX_BOOL IsForceClear() const {return m_bForceClear;}
CPDF_CountedColorSpace* FindColorSpacePtr(CPDF_Object* pCSObj) const;
CPDF_CountedPattern* FindPatternPtr(CPDF_Object* pPatternObj) const;
CPDF_Document* m_pPDFDoc;
CPDF_ColorSpaceMap m_ColorSpaceMap;
CPDF_PatternMap m_PatternMap;
CPDF_ImageMap m_ImageMap;
CPDF_IccProfileMap m_IccProfileMap;
CFX_MapByteStringToPtr m_HashProfileMap;
CPDF_FontFileMap m_FontFileMap;
FX_BOOL m_bForceClear;
private:
using CPDF_CountedFont = CPDF_CountedObject<CPDF_Font*>;
using CPDF_FontMap = std::map<CPDF_Dictionary*, CPDF_CountedFont*>;
CPDF_FontMap m_FontMap;
};
class CPDF_Function
{
public:
static CPDF_Function* Load(CPDF_Object* pFuncObj);
virtual ~CPDF_Function();
FX_BOOL Call(FX_FLOAT* inputs, int ninputs, FX_FLOAT* results, int& nresults) const;
int CountInputs()
{
return m_nInputs;
}
int CountOutputs()
{
return m_nOutputs;
}
protected:
CPDF_Function();
int m_nInputs, m_nOutputs;
FX_FLOAT* m_pDomains;
FX_FLOAT* m_pRanges;
FX_BOOL Init(CPDF_Object* pObj);
virtual FX_BOOL v_Init(CPDF_Object* pObj) = 0;
virtual FX_BOOL v_Call(FX_FLOAT* inputs, FX_FLOAT* results) const = 0;
};
class CPDF_IccProfile
{
public:
CPDF_IccProfile(const uint8_t* pData, FX_DWORD dwSize);
~CPDF_IccProfile();
int32_t GetComponents() const { return m_nSrcComponents; }
FX_BOOL m_bsRGB;
void* m_pTransform;
private:
int32_t m_nSrcComponents;
};
class CPDF_DeviceCS : public CPDF_ColorSpace
{
public:
CPDF_DeviceCS(int family);
virtual FX_BOOL GetRGB(FX_FLOAT* pBuf, FX_FLOAT& R, FX_FLOAT& G, FX_FLOAT& B) const;
FX_BOOL SetRGB(FX_FLOAT* pBuf, FX_FLOAT R, FX_FLOAT G, FX_FLOAT B) const;
FX_BOOL v_GetCMYK(FX_FLOAT* pBuf, FX_FLOAT& c, FX_FLOAT& m, FX_FLOAT& y, FX_FLOAT& k) const;
FX_BOOL v_SetCMYK(FX_FLOAT* pBuf, FX_FLOAT c, FX_FLOAT m, FX_FLOAT y, FX_FLOAT k) const;
virtual void TranslateImageLine(uint8_t* pDestBuf, const uint8_t* pSrcBuf, int pixels, int image_width, int image_height, FX_BOOL bTransMask = FALSE) const;
};
class CPDF_PatternCS : public CPDF_ColorSpace
{
public:
CPDF_PatternCS();
~CPDF_PatternCS();
virtual FX_BOOL v_Load(CPDF_Document* pDoc, CPDF_Array* pArray);
virtual FX_BOOL GetRGB(FX_FLOAT* pBuf, FX_FLOAT& R, FX_FLOAT& G, FX_FLOAT& B) const;
virtual CPDF_ColorSpace* GetBaseCS() const
{
return m_pBaseCS;
}
CPDF_ColorSpace* m_pBaseCS;
CPDF_CountedColorSpace* m_pCountedBaseCS;
};
#define MAX_PAGE_OBJECTS_UNIFY_NAMING 4096
class CPDF_ResourceNaming
{
public:
struct _NamingState {
CFX_ByteString m_Prefix;
int m_nIndex;
};
~CPDF_ResourceNaming();
CFX_ByteString GetName(const CPDF_Dictionary* pResList, const FX_CHAR* szType);
protected:
CFX_MapByteStringToPtr m_NamingCache;
};
#endif // CORE_SRC_FPDFAPI_FPDF_PAGE_PAGEINT_H_
|