diff options
Diffstat (limited to 'core/src/fpdfapi/fpdf_parser/fpdf_parser_decode.cpp')
-rw-r--r-- | core/src/fpdfapi/fpdf_parser/fpdf_parser_decode.cpp | 32 |
1 files changed, 18 insertions, 14 deletions
diff --git a/core/src/fpdfapi/fpdf_parser/fpdf_parser_decode.cpp b/core/src/fpdfapi/fpdf_parser/fpdf_parser_decode.cpp index 3ea554b2d8..e68fcb6800 100644 --- a/core/src/fpdfapi/fpdf_parser/fpdf_parser_decode.cpp +++ b/core/src/fpdfapi/fpdf_parser/fpdf_parser_decode.cpp @@ -8,7 +8,6 @@ #include "../../../include/fpdfapi/fpdf_parser.h" #include "../../../include/fpdfapi/fpdf_module.h" #include "../../../include/fxcodec/fx_codec.h" -#include "../../../include/fxcrt/fx_ext.h" #define _STREAM_MAX_SIZE_ 20 * 1024 * 1024 @@ -129,32 +128,37 @@ FX_DWORD HexDecode(const uint8_t* src_buf, } dest_buf = FX_Alloc(uint8_t, i / 2 + 1); dest_size = 0; - bool bFirst = true; + FX_BOOL bFirstDigit = TRUE; for (i = 0; i < src_size; i++) { uint8_t ch = src_buf[i]; if (PDFCharIsLineEnding(ch) || ch == ' ' || ch == '\t') continue; - if (ch == '>') { - ++i; + 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; - } - if (!std::isxdigit(ch)) + } else { continue; - - int digit = FXSYS_toHexDigit(ch); - if (bFirst) + } + if (bFirstDigit) { dest_buf[dest_size] = digit * 16; - else + } else { dest_buf[dest_size++] += digit; - - bFirst = !bFirst; + } + bFirstDigit = !bFirstDigit; } - if (!bFirst) + if (!bFirstDigit) { dest_size++; + } return i; } - FX_DWORD RunLengthDecode(const uint8_t* src_buf, FX_DWORD src_size, uint8_t*& dest_buf, |