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-rw-r--r--core/fpdfapi/page/fpdf_page_func.cpp201
1 files changed, 99 insertions, 102 deletions
diff --git a/core/fpdfapi/page/fpdf_page_func.cpp b/core/fpdfapi/page/fpdf_page_func.cpp
index d2e08a511c..a2e31f94bb 100644
--- a/core/fpdfapi/page/fpdf_page_func.cpp
+++ b/core/fpdfapi/page/fpdf_page_func.cpp
@@ -21,6 +21,98 @@
#include "core/fpdfapi/parser/cpdf_stream_acc.h"
#include "core/fxcrt/fx_safe_types.h"
+namespace {
+
+struct PDF_PSOpName {
+ const FX_CHAR* name;
+ PDF_PSOP op;
+};
+
+const PDF_PSOpName kPsOpNames[] = {
+ {"add", PSOP_ADD}, {"sub", PSOP_SUB},
+ {"mul", PSOP_MUL}, {"div", PSOP_DIV},
+ {"idiv", PSOP_IDIV}, {"mod", PSOP_MOD},
+ {"neg", PSOP_NEG}, {"abs", PSOP_ABS},
+ {"ceiling", PSOP_CEILING}, {"floor", PSOP_FLOOR},
+ {"round", PSOP_ROUND}, {"truncate", PSOP_TRUNCATE},
+ {"sqrt", PSOP_SQRT}, {"sin", PSOP_SIN},
+ {"cos", PSOP_COS}, {"atan", PSOP_ATAN},
+ {"exp", PSOP_EXP}, {"ln", PSOP_LN},
+ {"log", PSOP_LOG}, {"cvi", PSOP_CVI},
+ {"cvr", PSOP_CVR}, {"eq", PSOP_EQ},
+ {"ne", PSOP_NE}, {"gt", PSOP_GT},
+ {"ge", PSOP_GE}, {"lt", PSOP_LT},
+ {"le", PSOP_LE}, {"and", PSOP_AND},
+ {"or", PSOP_OR}, {"xor", PSOP_XOR},
+ {"not", PSOP_NOT}, {"bitshift", PSOP_BITSHIFT},
+ {"true", PSOP_TRUE}, {"false", PSOP_FALSE},
+ {"if", PSOP_IF}, {"ifelse", PSOP_IFELSE},
+ {"pop", PSOP_POP}, {"exch", PSOP_EXCH},
+ {"dup", PSOP_DUP}, {"copy", PSOP_COPY},
+ {"index", PSOP_INDEX}, {"roll", PSOP_ROLL}};
+
+// See PDF Reference 1.7, page 170, table 3.36.
+bool IsValidBitsPerSample(uint32_t x) {
+ switch (x) {
+ case 1:
+ case 2:
+ case 4:
+ case 8:
+ case 12:
+ case 16:
+ case 24:
+ case 32:
+ return true;
+ default:
+ return false;
+ }
+}
+
+// See PDF Reference 1.7, page 170.
+FX_FLOAT PDF_Interpolate(FX_FLOAT x,
+ FX_FLOAT xmin,
+ FX_FLOAT xmax,
+ FX_FLOAT ymin,
+ FX_FLOAT ymax) {
+ FX_FLOAT divisor = xmax - xmin;
+ return ymin + (divisor ? (x - xmin) * (ymax - ymin) / divisor : 0);
+}
+
+class CPDF_PSFunc : public CPDF_Function {
+ public:
+ CPDF_PSFunc() : CPDF_Function(Type::kType4PostScript) {}
+ ~CPDF_PSFunc() override {}
+
+ // CPDF_Function
+ FX_BOOL v_Init(CPDF_Object* pObj) override;
+ FX_BOOL v_Call(FX_FLOAT* inputs, FX_FLOAT* results) const override;
+
+ private:
+ CPDF_PSEngine m_PS;
+};
+
+FX_BOOL CPDF_PSFunc::v_Init(CPDF_Object* pObj) {
+ CPDF_StreamAcc acc;
+ acc.LoadAllData(pObj->AsStream(), FALSE);
+ return m_PS.Parse(reinterpret_cast<const FX_CHAR*>(acc.GetData()),
+ acc.GetSize());
+}
+
+FX_BOOL CPDF_PSFunc::v_Call(FX_FLOAT* inputs, FX_FLOAT* results) const {
+ CPDF_PSEngine& PS = const_cast<CPDF_PSEngine&>(m_PS);
+ PS.Reset();
+ for (uint32_t i = 0; i < m_nInputs; i++)
+ PS.Push(inputs[i]);
+ PS.Execute();
+ if (PS.GetStackSize() < m_nOutputs)
+ return FALSE;
+ for (uint32_t i = 0; i < m_nOutputs; i++)
+ results[m_nOutputs - i - 1] = PS.Pop();
+ return TRUE;
+}
+
+} // namespace
+
class CPDF_PSOP {
public:
explicit CPDF_PSOP(PDF_PSOP op) : m_op(op), m_value(0) {
@@ -107,31 +199,6 @@ FX_FLOAT CPDF_PSEngine::Pop() {
}
return m_Stack[--m_StackCount];
}
-const struct PDF_PSOpName {
- const FX_CHAR* name;
- PDF_PSOP op;
-} PDF_PSOpNames[] = {{"add", PSOP_ADD}, {"sub", PSOP_SUB},
- {"mul", PSOP_MUL}, {"div", PSOP_DIV},
- {"idiv", PSOP_IDIV}, {"mod", PSOP_MOD},
- {"neg", PSOP_NEG}, {"abs", PSOP_ABS},
- {"ceiling", PSOP_CEILING}, {"floor", PSOP_FLOOR},
- {"round", PSOP_ROUND}, {"truncate", PSOP_TRUNCATE},
- {"sqrt", PSOP_SQRT}, {"sin", PSOP_SIN},
- {"cos", PSOP_COS}, {"atan", PSOP_ATAN},
- {"exp", PSOP_EXP}, {"ln", PSOP_LN},
- {"log", PSOP_LOG}, {"cvi", PSOP_CVI},
- {"cvr", PSOP_CVR}, {"eq", PSOP_EQ},
- {"ne", PSOP_NE}, {"gt", PSOP_GT},
- {"ge", PSOP_GE}, {"lt", PSOP_LT},
- {"le", PSOP_LE}, {"and", PSOP_AND},
- {"or", PSOP_OR}, {"xor", PSOP_XOR},
- {"not", PSOP_NOT}, {"bitshift", PSOP_BITSHIFT},
- {"true", PSOP_TRUE}, {"false", PSOP_FALSE},
- {"if", PSOP_IF}, {"ifelse", PSOP_IFELSE},
- {"pop", PSOP_POP}, {"exch", PSOP_EXCH},
- {"dup", PSOP_DUP}, {"copy", PSOP_COPY},
- {"index", PSOP_INDEX}, {"roll", PSOP_ROLL}};
-
FX_BOOL CPDF_PSEngine::Parse(const FX_CHAR* str, int size) {
CPDF_SimpleParser parser((uint8_t*)str, size);
CFX_ByteStringC word = parser.GetWord();
@@ -162,7 +229,7 @@ FX_BOOL CPDF_PSProc::Parse(CPDF_SimpleParser* parser, int depth) {
}
} else {
bool found = false;
- for (const PDF_PSOpName& op_name : PDF_PSOpNames) {
+ for (const PDF_PSOpName& op_name : kPsOpNames) {
if (word == CFX_ByteStringC(op_name.name)) {
std::unique_ptr<CPDF_PSOP> op(new CPDF_PSOP(op_name.op));
m_Operators.push_back(std::move(op));
@@ -396,22 +463,12 @@ FX_BOOL CPDF_PSEngine::DoOperator(PDF_PSOP op) {
break;
j %= n;
- if (j < 0) {
- for (int i = 0; i < -j; i++) {
- FX_FLOAT first = m_Stack[m_StackCount - n];
- for (int ii = 0; ii < n - 1; ii++)
- m_Stack[m_StackCount - n + ii] = m_Stack[m_StackCount - n + ii + 1];
- m_Stack[m_StackCount - 1] = first;
- }
- } else {
- for (int i = 0; i < j; i++) {
- FX_FLOAT last = m_Stack[m_StackCount - 1];
- int ii;
- for (ii = 0; ii < n - 1; ii++)
- m_Stack[m_StackCount - ii - 1] = m_Stack[m_StackCount - ii - 2];
- m_Stack[m_StackCount - ii - 1] = last;
- }
- }
+ if (j > 0)
+ j -= n;
+ auto begin_it = std::begin(m_Stack) + m_StackCount - n;
+ auto middle_it = begin_it - j;
+ auto end_it = std::begin(m_Stack) + m_StackCount;
+ std::rotate(begin_it, middle_it, end_it);
break;
}
default:
@@ -420,66 +477,6 @@ FX_BOOL CPDF_PSEngine::DoOperator(PDF_PSOP op) {
return TRUE;
}
-// See PDF Reference 1.7, page 170, table 3.36.
-bool IsValidBitsPerSample(uint32_t x) {
- switch (x) {
- case 1:
- case 2:
- case 4:
- case 8:
- case 12:
- case 16:
- case 24:
- case 32:
- return true;
- default:
- return false;
- }
-}
-
-// See PDF Reference 1.7, page 170.
-FX_FLOAT PDF_Interpolate(FX_FLOAT x,
- FX_FLOAT xmin,
- FX_FLOAT xmax,
- FX_FLOAT ymin,
- FX_FLOAT ymax) {
- FX_FLOAT divisor = xmax - xmin;
- return ymin + (divisor ? (x - xmin) * (ymax - ymin) / divisor : 0);
-}
-
-class CPDF_PSFunc : public CPDF_Function {
- public:
- CPDF_PSFunc() : CPDF_Function(Type::kType4PostScript) {}
- ~CPDF_PSFunc() override {}
-
- // CPDF_Function
- FX_BOOL v_Init(CPDF_Object* pObj) override;
- FX_BOOL v_Call(FX_FLOAT* inputs, FX_FLOAT* results) const override;
-
- private:
- CPDF_PSEngine m_PS;
-};
-
-FX_BOOL CPDF_PSFunc::v_Init(CPDF_Object* pObj) {
- CPDF_StreamAcc acc;
- acc.LoadAllData(pObj->AsStream(), FALSE);
- return m_PS.Parse(reinterpret_cast<const FX_CHAR*>(acc.GetData()),
- acc.GetSize());
-}
-
-FX_BOOL CPDF_PSFunc::v_Call(FX_FLOAT* inputs, FX_FLOAT* results) const {
- CPDF_PSEngine& PS = const_cast<CPDF_PSEngine&>(m_PS);
- PS.Reset();
- for (uint32_t i = 0; i < m_nInputs; i++)
- PS.Push(inputs[i]);
- PS.Execute();
- if (PS.GetStackSize() < m_nOutputs)
- return FALSE;
- for (uint32_t i = 0; i < m_nOutputs; i++)
- results[m_nOutputs - i - 1] = PS.Pop();
- return TRUE;
-}
-
CPDF_SampledFunc::CPDF_SampledFunc() : CPDF_Function(Type::kType0Sampled) {}
CPDF_SampledFunc::~CPDF_SampledFunc() {}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 04:28:34 +0000