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1 // Copyright 2016 PDFium Authors. All rights reserved. | 1 // Copyright 2016 PDFium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
6 | 6 |
7 #include "core/fpdfapi/fpdf_parser/cpdf_syntax_parser.h" | 7 #include "core/fpdfapi/fpdf_parser/cpdf_syntax_parser.h" |
8 | 8 |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
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211 | 211 |
212 CFX_ByteTextBuf buf; | 212 CFX_ByteTextBuf buf; |
213 int32_t parlevel = 0; | 213 int32_t parlevel = 0; |
214 int32_t status = 0; | 214 int32_t status = 0; |
215 int32_t iEscCode = 0; | 215 int32_t iEscCode = 0; |
216 while (1) { | 216 while (1) { |
217 switch (status) { | 217 switch (status) { |
218 case 0: | 218 case 0: |
219 if (ch == ')') { | 219 if (ch == ')') { |
220 if (parlevel == 0) { | 220 if (parlevel == 0) { |
221 return buf.GetByteString(); | 221 return buf.AsStringC(); |
222 } | 222 } |
223 parlevel--; | 223 parlevel--; |
224 buf.AppendChar(')'); | 224 buf.AppendChar(')'); |
225 } else if (ch == '(') { | 225 } else if (ch == '(') { |
226 parlevel++; | 226 parlevel++; |
227 buf.AppendChar('('); | 227 buf.AppendChar('('); |
228 } else if (ch == '\\') { | 228 } else if (ch == '\\') { |
229 status = 1; | 229 status = 1; |
230 } else { | 230 } else { |
231 buf.AppendChar(ch); | 231 buf.AppendChar(ch); |
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284 if (ch != '\n') | 284 if (ch != '\n') |
285 continue; | 285 continue; |
286 break; | 286 break; |
287 } | 287 } |
288 | 288 |
289 if (!GetNextChar(ch)) | 289 if (!GetNextChar(ch)) |
290 break; | 290 break; |
291 } | 291 } |
292 | 292 |
293 GetNextChar(ch); | 293 GetNextChar(ch); |
294 return buf.GetByteString(); | 294 return buf.AsStringC(); |
295 } | 295 } |
296 | 296 |
297 CFX_ByteString CPDF_SyntaxParser::ReadHexString() { | 297 CFX_ByteString CPDF_SyntaxParser::ReadHexString() { |
298 uint8_t ch; | 298 uint8_t ch; |
299 if (!GetNextChar(ch)) | 299 if (!GetNextChar(ch)) |
300 return CFX_ByteString(); | 300 return CFX_ByteString(); |
301 | 301 |
302 CFX_ByteTextBuf buf; | 302 CFX_ByteTextBuf buf; |
303 bool bFirst = true; | 303 bool bFirst = true; |
304 uint8_t code = 0; | 304 uint8_t code = 0; |
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316 } | 316 } |
317 bFirst = !bFirst; | 317 bFirst = !bFirst; |
318 } | 318 } |
319 | 319 |
320 if (!GetNextChar(ch)) | 320 if (!GetNextChar(ch)) |
321 break; | 321 break; |
322 } | 322 } |
323 if (!bFirst) | 323 if (!bFirst) |
324 buf.AppendByte(code); | 324 buf.AppendByte(code); |
325 | 325 |
326 return buf.GetByteString(); | 326 return buf.AsStringC(); |
327 } | 327 } |
328 | 328 |
329 void CPDF_SyntaxParser::ToNextLine() { | 329 void CPDF_SyntaxParser::ToNextLine() { |
330 uint8_t ch; | 330 uint8_t ch; |
331 while (GetNextChar(ch)) { | 331 while (GetNextChar(ch)) { |
332 if (ch == '\n') | 332 if (ch == '\n') |
333 break; | 333 break; |
334 | 334 |
335 if (ch == '\r') { | 335 if (ch == '\r') { |
336 GetNextChar(ch); | 336 GetNextChar(ch); |
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981 if (limit && m_Pos == limit) | 981 if (limit && m_Pos == limit) |
982 return -1; | 982 return -1; |
983 } | 983 } |
984 return -1; | 984 return -1; |
985 } | 985 } |
986 | 986 |
987 void CPDF_SyntaxParser::SetEncrypt( | 987 void CPDF_SyntaxParser::SetEncrypt( |
988 std::unique_ptr<IPDF_CryptoHandler> pCryptoHandler) { | 988 std::unique_ptr<IPDF_CryptoHandler> pCryptoHandler) { |
989 m_pCryptoHandler = std::move(pCryptoHandler); | 989 m_pCryptoHandler = std::move(pCryptoHandler); |
990 } | 990 } |
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