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-rw-r--r--core/src/fxcrt/fx_arabic.cpp84
-rw-r--r--core/src/fxcrt/fx_arabic.h33
-rw-r--r--core/src/fxcrt/fx_bidi.cpp66
-rw-r--r--core/src/fxcrt/fx_bidi_unittest.cpp136
-rw-r--r--core/src/fxcrt/fx_ucddata.cpp19
-rw-r--r--core/src/fxcrt/fx_unicode.cpp55
6 files changed, 230 insertions, 163 deletions
diff --git a/core/src/fxcrt/fx_arabic.cpp b/core/src/fxcrt/fx_arabic.cpp
deleted file mode 100644
index 3b7d0c1c71..0000000000
--- a/core/src/fxcrt/fx_arabic.cpp
+++ /dev/null
@@ -1,84 +0,0 @@
-// Copyright 2014 PDFium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
-
-#include "../../include/fxcrt/fx_ucd.h"
-#include "fx_arabic.h"
-
-extern const FX_DWORD gs_FX_TextLayout_CodeProperties[65536];
-IFX_BidiChar* IFX_BidiChar::Create() {
- return new CFX_BidiChar;
-}
-CFX_BidiChar::CFX_BidiChar()
- : m_bSeparateNeutral(TRUE),
- m_iCurStart(0),
- m_iCurCount(0),
- m_iCurBidi(0),
- m_iLastBidi(0),
- m_iLastStart(0),
- m_iLastCount(0) {}
-void CFX_BidiChar::SetPolicy(FX_BOOL bSeparateNeutral) {
- m_bSeparateNeutral = bSeparateNeutral;
-}
-
-FX_BOOL CFX_BidiChar::AppendChar(FX_WCHAR wch) {
- FX_DWORD dwProps = gs_FX_TextLayout_CodeProperties[(FX_WORD)wch];
- int32_t iBidiCls = (dwProps & FX_BIDICLASSBITSMASK) >> FX_BIDICLASSBITS;
- int32_t iContext = 0;
- switch (iBidiCls) {
- case FX_BIDICLASS_L:
- case FX_BIDICLASS_AN:
- case FX_BIDICLASS_EN:
- iContext = 1;
- break;
- case FX_BIDICLASS_R:
- case FX_BIDICLASS_AL:
- iContext = 2;
- break;
- }
- FX_BOOL bRet = FALSE;
- if (iContext != m_iCurBidi) {
- if (m_bSeparateNeutral) {
- bRet = TRUE;
- } else {
- if (m_iCurBidi == 0) {
- bRet = (m_iCurCount > 0);
- } else {
- bRet = (iContext != 0);
- }
- }
- if (bRet) {
- m_iLastBidi = m_iCurBidi;
- m_iLastStart = m_iCurStart;
- m_iCurStart = m_iCurCount;
- m_iLastCount = m_iCurCount - m_iLastStart;
- }
- if (m_bSeparateNeutral || iContext != 0) {
- m_iCurBidi = iContext;
- }
- }
- m_iCurCount++;
- return bRet;
-}
-FX_BOOL CFX_BidiChar::EndChar() {
- m_iLastBidi = m_iCurBidi;
- m_iLastStart = m_iCurStart;
- m_iCurStart = m_iCurCount;
- m_iLastCount = m_iCurCount - m_iLastStart;
- return m_iLastCount > 0;
-}
-int32_t CFX_BidiChar::GetBidiInfo(int32_t& iStart, int32_t& iCount) {
- iStart = m_iLastStart;
- iCount = m_iLastCount;
- return m_iLastBidi;
-}
-void CFX_BidiChar::Reset() {
- m_iCurStart = 0;
- m_iCurCount = 0;
- m_iCurBidi = 0;
- m_iLastBidi = 0;
- m_iLastStart = 0;
- m_iLastCount = 0;
-}
diff --git a/core/src/fxcrt/fx_arabic.h b/core/src/fxcrt/fx_arabic.h
deleted file mode 100644
index 0230d40579..0000000000
--- a/core/src/fxcrt/fx_arabic.h
+++ /dev/null
@@ -1,33 +0,0 @@
-// Copyright 2014 PDFium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
-
-#ifndef CORE_SRC_FXCRT_FX_ARABIC_H_
-#define CORE_SRC_FXCRT_FX_ARABIC_H_
-
-#include "../../include/fxcrt/fx_arb.h"
-
-class CFX_BidiChar final : public IFX_BidiChar {
- public:
- CFX_BidiChar();
- ~CFX_BidiChar() override {}
-
- void SetPolicy(FX_BOOL bSeparateNeutral = TRUE) override;
- FX_BOOL AppendChar(FX_WCHAR wch) override;
- FX_BOOL EndChar() override;
- int32_t GetBidiInfo(int32_t& iStart, int32_t& iCount) override;
- void Reset() override;
-
- private:
- FX_BOOL m_bSeparateNeutral;
- int32_t m_iCurStart;
- int32_t m_iCurCount;
- int32_t m_iCurBidi;
- int32_t m_iLastBidi;
- int32_t m_iLastStart;
- int32_t m_iLastCount;
-};
-
-#endif // CORE_SRC_FXCRT_FX_ARABIC_H_
diff --git a/core/src/fxcrt/fx_bidi.cpp b/core/src/fxcrt/fx_bidi.cpp
new file mode 100644
index 0000000000..0310fa0e94
--- /dev/null
+++ b/core/src/fxcrt/fx_bidi.cpp
@@ -0,0 +1,66 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../../include/fxcrt/fx_bidi.h"
+#include "../../include/fxcrt/fx_ucd.h"
+
+CFX_BidiChar::CFX_BidiChar()
+ : m_iCurStart(0),
+ m_iCurCount(0),
+ m_CurBidi(NEUTRAL),
+ m_iLastStart(0),
+ m_iLastCount(0),
+ m_LastBidi(NEUTRAL) {
+}
+
+CFX_BidiChar::~CFX_BidiChar() {
+}
+
+bool CFX_BidiChar::AppendChar(FX_WCHAR wch) {
+ FX_DWORD dwProps = FX_GetUnicodeProperties(wch);
+ int32_t iBidiCls = (dwProps & FX_BIDICLASSBITSMASK) >> FX_BIDICLASSBITS;
+ Direction bidi = NEUTRAL;
+ switch (iBidiCls) {
+ case FX_BIDICLASS_L:
+ case FX_BIDICLASS_AN:
+ case FX_BIDICLASS_EN:
+ bidi = LEFT;
+ break;
+ case FX_BIDICLASS_R:
+ case FX_BIDICLASS_AL:
+ bidi = RIGHT;
+ break;
+ }
+
+ bool bRet = (bidi != m_CurBidi);
+ if (bRet) {
+ SaveCurrentStateToLastState();
+ m_CurBidi = bidi;
+ }
+ m_iCurCount++;
+ return bRet;
+}
+
+bool CFX_BidiChar::EndChar() {
+ SaveCurrentStateToLastState();
+ return m_iLastCount > 0;
+}
+
+CFX_BidiChar::Direction CFX_BidiChar::GetBidiInfo(int32_t* iStart,
+ int32_t* iCount) const {
+ if (iStart)
+ *iStart = m_iLastStart;
+ if (iCount)
+ *iCount = m_iLastCount;
+ return m_LastBidi;
+}
+
+void CFX_BidiChar::SaveCurrentStateToLastState() {
+ m_LastBidi = m_CurBidi;
+ m_iLastStart = m_iCurStart;
+ m_iCurStart = m_iCurCount;
+ m_iLastCount = m_iCurCount - m_iLastStart;
+}
diff --git a/core/src/fxcrt/fx_bidi_unittest.cpp b/core/src/fxcrt/fx_bidi_unittest.cpp
new file mode 100644
index 0000000000..c629cbbdc6
--- /dev/null
+++ b/core/src/fxcrt/fx_bidi_unittest.cpp
@@ -0,0 +1,136 @@
+// Copyright 2015 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "testing/gtest/include/gtest/gtest.h"
+#include "../../include/fxcrt/fx_bidi.h"
+
+namespace {
+
+const FX_WCHAR kNeutralChar = 32;
+const FX_WCHAR kLeftChar = 65;
+const FX_WCHAR kRightChar = 1424;
+
+} // namespace
+
+TEST(fxcrt, BidiCharEmpty) {
+ int32_t start = -1;
+ int32_t count = -1;
+ CFX_BidiChar bidi;
+ CFX_BidiChar::Direction dir = bidi.GetBidiInfo(nullptr, nullptr);
+ EXPECT_EQ(CFX_BidiChar::NEUTRAL, dir);
+
+ dir = bidi.GetBidiInfo(&start, nullptr);
+ EXPECT_EQ(CFX_BidiChar::NEUTRAL, dir);
+ EXPECT_EQ(0, start);
+
+ dir = bidi.GetBidiInfo(nullptr, &count);
+ EXPECT_EQ(CFX_BidiChar::NEUTRAL, dir);
+ EXPECT_EQ(0, count);
+
+ start = -1;
+ count = -1;
+ dir = bidi.GetBidiInfo(&start, &count);
+ EXPECT_EQ(CFX_BidiChar::NEUTRAL, dir);
+ EXPECT_EQ(0, start);
+ EXPECT_EQ(0, count);
+
+ EXPECT_FALSE(bidi.EndChar());
+}
+
+TEST(fxcrt, BidiCharLeft) {
+ int32_t start = -1;
+ int32_t count = -1;
+ CFX_BidiChar bidi;
+
+ EXPECT_TRUE(bidi.AppendChar(kLeftChar));
+ CFX_BidiChar::Direction dir = bidi.GetBidiInfo(&start, &count);
+ EXPECT_EQ(0, start);
+ EXPECT_EQ(0, count);
+
+ EXPECT_FALSE(bidi.AppendChar(kLeftChar));
+ EXPECT_FALSE(bidi.AppendChar(kLeftChar));
+
+ dir = bidi.GetBidiInfo(&start, &count);
+ EXPECT_EQ(CFX_BidiChar::NEUTRAL, dir);
+ EXPECT_EQ(0, start);
+ EXPECT_EQ(0, count);
+
+ EXPECT_TRUE(bidi.EndChar());
+ dir = bidi.GetBidiInfo(&start, &count);
+ EXPECT_EQ(CFX_BidiChar::LEFT, dir);
+ EXPECT_EQ(0, start);
+ EXPECT_EQ(3, count);
+
+ EXPECT_FALSE(bidi.EndChar());
+}
+
+TEST(fxcrt, BidiCharLeftNeutralRight) {
+ int32_t start = -1;
+ int32_t count = -1;
+ CFX_BidiChar bidi;
+
+ EXPECT_TRUE(bidi.AppendChar(kLeftChar));
+ CFX_BidiChar::Direction dir = bidi.GetBidiInfo(&start, &count);
+ EXPECT_EQ(0, start);
+ EXPECT_EQ(0, count);
+
+ EXPECT_FALSE(bidi.AppendChar(kLeftChar));
+ EXPECT_FALSE(bidi.AppendChar(kLeftChar));
+ EXPECT_TRUE(bidi.AppendChar(kNeutralChar));
+ dir = bidi.GetBidiInfo(&start, &count);
+ EXPECT_EQ(0, start);
+ EXPECT_EQ(3, count);
+
+ EXPECT_FALSE(bidi.AppendChar(kNeutralChar));
+ EXPECT_FALSE(bidi.AppendChar(kNeutralChar));
+ EXPECT_FALSE(bidi.AppendChar(kNeutralChar));
+ EXPECT_TRUE(bidi.AppendChar(kRightChar));
+ dir = bidi.GetBidiInfo(&start, &count);
+ EXPECT_EQ(CFX_BidiChar::NEUTRAL, dir);
+ EXPECT_EQ(3, start);
+ EXPECT_EQ(4, count);
+
+ EXPECT_TRUE(bidi.EndChar());
+ dir = bidi.GetBidiInfo(&start, &count);
+ EXPECT_EQ(CFX_BidiChar::RIGHT, dir);
+ EXPECT_EQ(7, start);
+ EXPECT_EQ(1, count);
+
+ EXPECT_FALSE(bidi.EndChar());
+}
+
+TEST(fxcrt, BidiCharLeftRightLeft) {
+ int32_t start = -1;
+ int32_t count = -1;
+ CFX_BidiChar bidi;
+
+ EXPECT_TRUE(bidi.AppendChar(kLeftChar));
+ CFX_BidiChar::Direction dir = bidi.GetBidiInfo(&start, &count);
+ EXPECT_EQ(0, start);
+ EXPECT_EQ(0, count);
+
+ EXPECT_FALSE(bidi.AppendChar(kLeftChar));
+ EXPECT_FALSE(bidi.AppendChar(kLeftChar));
+ EXPECT_TRUE(bidi.AppendChar(kRightChar));
+ dir = bidi.GetBidiInfo(&start, &count);
+ EXPECT_EQ(0, start);
+ EXPECT_EQ(3, count);
+
+ EXPECT_FALSE(bidi.AppendChar(kRightChar));
+ EXPECT_FALSE(bidi.AppendChar(kRightChar));
+ EXPECT_FALSE(bidi.AppendChar(kRightChar));
+ EXPECT_TRUE(bidi.AppendChar(kLeftChar));
+ dir = bidi.GetBidiInfo(&start, &count);
+ EXPECT_EQ(CFX_BidiChar::RIGHT, dir);
+ EXPECT_EQ(3, start);
+ EXPECT_EQ(4, count);
+
+ EXPECT_TRUE(bidi.EndChar());
+ dir = bidi.GetBidiInfo(&start, &count);
+ EXPECT_EQ(CFX_BidiChar::LEFT, dir);
+ EXPECT_EQ(7, start);
+ EXPECT_EQ(1, count);
+
+ EXPECT_FALSE(bidi.EndChar());
+}
diff --git a/core/src/fxcrt/fx_ucddata.cpp b/core/src/fxcrt/fx_ucddata.cpp
index 8b35f31e2b..13c5da1419 100644
--- a/core/src/fxcrt/fx_ucddata.cpp
+++ b/core/src/fxcrt/fx_ucddata.cpp
@@ -4,9 +4,10 @@
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
-#include "../../include/fxcrt/fx_system.h"
+#include "../../include/fxcrt/fx_basic.h"
+#include "../../include/fxcrt/fx_ucd.h"
-extern const FX_DWORD gs_FX_TextLayout_CodeProperties[65536] = {
+const FX_DWORD kTextLayoutCodeProperties[] = {
0xfffe9a93, 0xfffe9a93, 0xfffe9a93, 0xfffe9a93, 0xfffe9a93, 0xfffe9a93,
0xfffe9a93, 0xfffe9a93, 0xfffe9a93, 0xfffe8ae5, 0xfffe9b5c, 0xfffe9ada,
0xfffe9b1a, 0xfffe9b5b, 0xfffe9a93, 0xfffe9a93, 0xfffe9a93, 0xfffe9a93,
@@ -10931,7 +10932,11 @@ extern const FX_DWORD gs_FX_TextLayout_CodeProperties[65536] = {
0xfffe02a4, 0xfffe02a4, 0xfffe02a4, 0xfffe3013, 0xfffe3013, 0xfffe3013,
0xfffe3011, 0xfffe3022, 0xfffe1aa4, 0xfffe1aa4,
};
-extern const FX_WCHAR gs_FX_TextLayout_VerticalMirror[64] = {
+
+const size_t kTextLayoutCodePropertiesSize =
+ FX_ArraySize(kTextLayoutCodeProperties);
+
+const FX_WCHAR kFXTextLayoutVerticalMirror[] = {
0xFE33, 0xFE32, 0xFE31, 0xFE41, 0xFE42, 0xFE43, 0xFE44, 0xFE3F,
0xFE40, 0xFE3D, 0xFE3E, 0xFE41, 0xFE42, 0xFE43, 0xFE44, 0xFE3B,
0xFE3C, 0xFE39, 0xFE3A, 0xFE34, 0xFE35, 0xFE36, 0xFE37, 0xFE38,
@@ -10941,7 +10946,10 @@ extern const FX_WCHAR gs_FX_TextLayout_VerticalMirror[64] = {
0xFEFF, 0xFEFF, 0xFEFF, 0xFEFF, 0xFEFF, 0xFEFF, 0xFEFF, 0xFEFF,
0xFEFF, 0xFEFF, 0xFEFF, 0xFEFF, 0xFEFF, 0xFEFF, 0xFEFF, 0xFEFF,
};
-extern const FX_WCHAR gs_FX_TextLayout_BidiMirror[512] = {
+const size_t kFXTextLayoutVerticalMirrorSize =
+ FX_ArraySize(kFXTextLayoutVerticalMirror);
+
+const FX_WCHAR kFXTextLayoutBidiMirror[] = {
0x0029, 0x0028, 0x003E, 0x003C, 0x005D, 0x005B, 0x007D, 0x007B, 0x00BB,
0x00AB, 0x0F3B, 0x0F3A, 0x0F3D, 0x0F3C, 0x169C, 0x169B, 0x2019, 0x2018,
0x201D, 0x201C, 0x203A, 0x2039, 0x2046, 0x2045, 0x207E, 0x207D, 0x208E,
@@ -11000,3 +11008,6 @@ extern const FX_WCHAR gs_FX_TextLayout_BidiMirror[512] = {
0xFEFF, 0xFEFF, 0xFEFF, 0xFEFF, 0xFEFF, 0xFEFF, 0xFEFF, 0xFEFF, 0xFEFF,
0xFEFF, 0xFEFF, 0xFEFF, 0xFEFF, 0xFEFF, 0xFEFF, 0xFEFF, 0xFEFF,
};
+
+const size_t kFXTextLayoutBidiMirrorSize =
+ FX_ArraySize(kFXTextLayoutBidiMirror);
diff --git a/core/src/fxcrt/fx_unicode.cpp b/core/src/fxcrt/fx_unicode.cpp
index f05aeb5efb..c7ab618200 100644
--- a/core/src/fxcrt/fx_unicode.cpp
+++ b/core/src/fxcrt/fx_unicode.cpp
@@ -6,58 +6,29 @@
#include "../../include/fxcrt/fx_ucd.h"
-extern const FX_DWORD gs_FX_TextLayout_CodeProperties[65536];
-extern const FX_WCHAR gs_FX_TextLayout_VerticalMirror[64];
-extern const FX_WCHAR gs_FX_TextLayout_BidiMirror[512];
FX_DWORD FX_GetUnicodeProperties(FX_WCHAR wch) {
- return gs_FX_TextLayout_CodeProperties[(FX_WORD)wch];
-}
-FX_BOOL FX_IsCtrlCode(FX_WCHAR ch) {
- FX_DWORD dwRet =
- (gs_FX_TextLayout_CodeProperties[(FX_WORD)ch] & FX_CHARTYPEBITSMASK);
- return dwRet == FX_CHARTYPE_Tab || dwRet == FX_CHARTYPE_Control;
-}
-FX_BOOL FX_IsRotationCode(FX_WCHAR ch) {
- return (gs_FX_TextLayout_CodeProperties[(FX_WORD)ch] & 0x8000) != 0;
-}
-FX_BOOL FX_IsCombinationChar(FX_WCHAR wch) {
- FX_DWORD dwProps =
- (gs_FX_TextLayout_CodeProperties[(FX_WORD)wch] & FX_CHARTYPEBITSMASK);
- return dwProps == FX_CHARTYPE_Combination;
-}
-FX_BOOL FX_IsBidiChar(FX_WCHAR wch) {
- FX_DWORD dwProps = gs_FX_TextLayout_CodeProperties[(FX_WORD)wch];
- int32_t iBidiCls = (dwProps & FX_BIDICLASSBITSMASK) >> FX_BIDICLASSBITS;
- return (FX_BIDICLASS_R == iBidiCls || FX_BIDICLASS_AL == iBidiCls);
+ size_t idx = static_cast<size_t>(wch);
+ if (idx < kTextLayoutCodePropertiesSize)
+ return kTextLayoutCodeProperties[(FX_WORD)wch];
+ return 0;
}
+
FX_WCHAR FX_GetMirrorChar(FX_WCHAR wch, FX_BOOL bRTL, FX_BOOL bVertical) {
- FX_DWORD dwProps = gs_FX_TextLayout_CodeProperties[(FX_WORD)wch];
+ FX_DWORD dwProps = FX_GetUnicodeProperties(wch);
FX_DWORD dwTemp = (dwProps & 0xFF800000);
if (bRTL && dwTemp < 0xFF800000) {
- wch = gs_FX_TextLayout_BidiMirror[dwTemp >> 23];
- dwProps = gs_FX_TextLayout_CodeProperties[(FX_WORD)wch];
- }
- if (bVertical) {
- dwTemp = (dwProps & 0x007E0000);
- if (dwTemp < 0x007E0000) {
- wch = gs_FX_TextLayout_VerticalMirror[dwTemp >> 17];
+ size_t idx = dwTemp >> 23;
+ if (idx < kFXTextLayoutBidiMirrorSize) {
+ wch = kFXTextLayoutBidiMirror[idx];
+ dwProps = FX_GetUnicodeProperties(wch);
}
}
- return wch;
-}
-FX_WCHAR FX_GetMirrorChar(FX_WCHAR wch,
- FX_DWORD dwProps,
- FX_BOOL bRTL,
- FX_BOOL bVertical) {
- FX_DWORD dwTemp = (dwProps & 0xFF800000);
- if (bRTL && dwTemp < 0xFF800000) {
- wch = gs_FX_TextLayout_BidiMirror[dwTemp >> 23];
- dwProps = gs_FX_TextLayout_CodeProperties[(FX_WORD)wch];
- }
if (bVertical) {
dwTemp = (dwProps & 0x007E0000);
if (dwTemp < 0x007E0000) {
- wch = gs_FX_TextLayout_VerticalMirror[dwTemp >> 17];
+ size_t idx = dwTemp >> 17;
+ if (idx < kFXTextLayoutVerticalMirrorSize)
+ wch = kFXTextLayoutVerticalMirror[idx];
}
}
return wch;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 10:37:01 +0000