diff options
Diffstat (limited to 'core/fxcrt/fx_basic_util.cpp')
-rw-r--r-- | core/fxcrt/fx_basic_util.cpp | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/core/fxcrt/fx_basic_util.cpp b/core/fxcrt/fx_basic_util.cpp index d8cf087b73..a636b6cb42 100644 --- a/core/fxcrt/fx_basic_util.cpp +++ b/core/fxcrt/fx_basic_util.cpp @@ -5,128 +5,10 @@ // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com #include <algorithm> -#include <cctype> -#include <limits> -#include <memory> -#include "core/fxcrt/fx_extension.h" #include "core/fxcrt/fx_stream.h" -#include "core/fxcrt/fx_system.h" #include "third_party/base/ptr_util.h" -namespace { - -const float fraction_scales[] = {0.1f, 0.01f, 0.001f, - 0.0001f, 0.00001f, 0.000001f, - 0.0000001f, 0.00000001f, 0.000000001f, - 0.0000000001f, 0.00000000001f}; - -float FractionalScale(size_t scale_factor, int value) { - return fraction_scales[scale_factor] * value; -} - -} // namespace - -bool FX_atonum(const CFX_ByteStringC& strc, void* pData) { - if (strc.Contains('.')) { - float* pFloat = static_cast<float*>(pData); - *pFloat = FX_atof(strc); - return false; - } - - // Note, numbers in PDF are typically of the form 123, -123, etc. But, - // for things like the Permissions on the encryption hash the number is - // actually an unsigned value. We use a uint32_t so we can deal with the - // unsigned and then check for overflow if the user actually signed the value. - // The Permissions flag is listed in Table 3.20 PDF 1.7 spec. - pdfium::base::CheckedNumeric<uint32_t> integer = 0; - bool bNegative = false; - bool bSigned = false; - FX_STRSIZE cc = 0; - if (strc[0] == '+') { - cc++; - bSigned = true; - } else if (strc[0] == '-') { - bNegative = true; - bSigned = true; - cc++; - } - - while (cc < strc.GetLength() && std::isdigit(strc[cc])) { - integer = integer * 10 + FXSYS_DecimalCharToInt(strc.CharAt(cc)); - if (!integer.IsValid()) - break; - cc++; - } - - // We have a sign, and the value was greater then a regular integer - // we've overflowed, reset to the default value. - if (bSigned) { - if (bNegative) { - if (integer.ValueOrDefault(0) > - static_cast<uint32_t>(std::numeric_limits<int>::max()) + 1) { - integer = 0; - } - } else if (integer.ValueOrDefault(0) > - static_cast<uint32_t>(std::numeric_limits<int>::max())) { - integer = 0; - } - } - - // Switch back to the int space so we can flip to a negative if we need. - uint32_t uValue = integer.ValueOrDefault(0); - int32_t value = static_cast<int>(uValue); - if (bNegative) - value = -value; - - int* pInt = static_cast<int*>(pData); - *pInt = value; - return true; -} - -float FX_atof(const CFX_ByteStringC& strc) { - if (strc.IsEmpty()) - return 0.0; - - int cc = 0; - bool bNegative = false; - int len = strc.GetLength(); - if (strc[0] == '+') { - cc++; - } else if (strc[0] == '-') { - bNegative = true; - cc++; - } - while (cc < len) { - if (strc[cc] != '+' && strc[cc] != '-') - break; - cc++; - } - float value = 0; - while (cc < len) { - if (strc[cc] == '.') - break; - value = value * 10 + FXSYS_DecimalCharToInt(strc.CharAt(cc)); - cc++; - } - int scale = 0; - if (cc < len && strc[cc] == '.') { - cc++; - while (cc < len) { - value += FractionalScale(scale, FXSYS_DecimalCharToInt(strc.CharAt(cc))); - scale++; - if (scale == FX_ArraySize(fraction_scales)) - break; - cc++; - } - } - return bNegative ? -value : value; -} - -float FX_atof(const CFX_WideStringC& wsStr) { - return FX_atof(FX_UTF8Encode(wsStr).c_str()); -} - FX_FileHandle* FX_OpenFolder(const char* path) { #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ auto pData = pdfium::MakeUnique<CFindFileDataA>(); |