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authorTom Sepez <tsepez@chromium.org>2018-09-13 19:27:08 +0000
committerChromium commit bot <commit-bot@chromium.org>2018-09-13 19:27:08 +0000
commit29e180342e18873babf1c74f7c5c056f90a191b0 (patch)
treea897b644169324f748c00822122d9b7da8271933 /core/fpdfapi/page
parent5700d9e2eea5813861920995815ac092fd7df973 (diff)
downloadpdfium-29e180342e18873babf1c74f7c5c056f90a191b0.tar.xz
Revert "Introduce FX_Number class as a replacement for FX_atonum()."
This reverts commit a5d7ad3aa8feb08a14b5cca173d673054c1ade23. Reason for revert: Speculative revert to get back before flake. Original change's description: > Introduce FX_Number class as a replacement for FX_atonum(). > > The issue with FX_atonum() is that it doesn't return any information > about whether it range-checked its integer values as a signed or > unsigned type, even though it knows this as part of its processing. > > Rather than adding another out parameter to that function, create > a class to hold all this information together. > > This is the first place things went astray while diagnosing > bug 882959, in that a large positive value was cast to float as a > negative value. Unfortunately, this doesn't affect the related bug, > but is a step in the right direction. > > Change-Id: I0977ec8fccf85e2632a962507bdd30a1cbe6d33c > Reviewed-on: https://pdfium-review.googlesource.com/42353 > Reviewed-by: Lei Zhang <thestig@chromium.org> > Commit-Queue: Tom Sepez <tsepez@chromium.org> TBR=thestig@chromium.org,tsepez@chromium.org Change-Id: Ia56270c3daa80408fc2b23eb4384a77f03f45b82 No-Presubmit: true No-Tree-Checks: true No-Try: true Reviewed-on: https://pdfium-review.googlesource.com/42392 Reviewed-by: Tom Sepez <tsepez@chromium.org> Commit-Queue: Tom Sepez <tsepez@chromium.org>
Diffstat (limited to 'core/fpdfapi/page')
-rw-r--r--core/fpdfapi/page/cpdf_streamcontentparser.cpp31
-rw-r--r--core/fpdfapi/page/cpdf_streamcontentparser.h9
2 files changed, 24 insertions, 16 deletions
diff --git a/core/fpdfapi/page/cpdf_streamcontentparser.cpp b/core/fpdfapi/page/cpdf_streamcontentparser.cpp
index 20892cc264..2244232ecb 100644
--- a/core/fpdfapi/page/cpdf_streamcontentparser.cpp
+++ b/core/fpdfapi/page/cpdf_streamcontentparser.cpp
@@ -338,7 +338,7 @@ void CPDF_StreamContentParser::AddNameParam(const ByteStringView& bsName) {
void CPDF_StreamContentParser::AddNumberParam(const ByteStringView& str) {
ContentParam& param = m_ParamBuf[GetNextParamPos()];
param.m_Type = ContentParam::NUMBER;
- param.m_Number = FX_Number(str);
+ param.m_Number.m_bInteger = FX_atonum(str, &param.m_Number.m_Integer);
}
void CPDF_StreamContentParser::AddObjectParam(
@@ -373,9 +373,9 @@ CPDF_Object* CPDF_StreamContentParser::GetObject(uint32_t index) {
if (param.m_Type == ContentParam::NUMBER) {
param.m_Type = ContentParam::OBJECT;
param.m_pObject =
- param.m_Number.IsInteger()
- ? pdfium::MakeUnique<CPDF_Number>(param.m_Number.GetSigned())
- : pdfium::MakeUnique<CPDF_Number>(param.m_Number.GetFloat());
+ param.m_Number.m_bInteger
+ ? pdfium::MakeUnique<CPDF_Number>(param.m_Number.m_Integer)
+ : pdfium::MakeUnique<CPDF_Number>(param.m_Number.m_Float);
return param.m_pObject.get();
}
if (param.m_Type == ContentParam::NAME) {
@@ -411,20 +411,21 @@ ByteString CPDF_StreamContentParser::GetString(uint32_t index) const {
}
float CPDF_StreamContentParser::GetNumber(uint32_t index) const {
- if (index >= m_ParamCount)
+ if (index >= m_ParamCount) {
return 0;
-
+ }
int real_index = m_ParamStartPos + m_ParamCount - index - 1;
- if (real_index >= kParamBufSize)
+ if (real_index >= kParamBufSize) {
real_index -= kParamBufSize;
-
+ }
const ContentParam& param = m_ParamBuf[real_index];
- if (param.m_Type == ContentParam::NUMBER)
- return param.m_Number.GetFloat();
-
+ if (param.m_Type == ContentParam::NUMBER) {
+ return param.m_Number.m_bInteger
+ ? static_cast<float>(param.m_Number.m_Integer)
+ : param.m_Number.m_Float;
+ }
if (param.m_Type == 0 && param.m_pObject)
return param.m_pObject->GetNumber();
-
return 0;
}
@@ -1631,8 +1632,10 @@ void CPDF_StreamContentParser::ParsePathObject() {
if (nParams == 6)
break;
- FX_Number number(m_pSyntax->GetWord());
- params[nParams++] = number.GetFloat();
+ int value;
+ bool bInteger = FX_atonum(m_pSyntax->GetWord(), &value);
+ params[nParams++] = bInteger ? static_cast<float>(value)
+ : *reinterpret_cast<float*>(&value);
break;
}
default:
diff --git a/core/fpdfapi/page/cpdf_streamcontentparser.h b/core/fpdfapi/page/cpdf_streamcontentparser.h
index 6417043305..a129894dba 100644
--- a/core/fpdfapi/page/cpdf_streamcontentparser.h
+++ b/core/fpdfapi/page/cpdf_streamcontentparser.h
@@ -15,7 +15,6 @@
#include "core/fpdfapi/page/cpdf_contentmark.h"
#include "core/fpdfapi/parser/cpdf_stream.h"
-#include "core/fxcrt/fx_number.h"
#include "core/fxcrt/fx_string.h"
#include "core/fxge/cfx_pathdata.h"
@@ -72,7 +71,13 @@ class CPDF_StreamContentParser {
Type m_Type;
std::unique_ptr<CPDF_Object> m_pObject;
- FX_Number m_Number;
+ struct {
+ bool m_bInteger;
+ union {
+ int m_Integer;
+ float m_Float;
+ };
+ } m_Number;
struct {
int m_Len;
char m_Buffer[32];