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-rw-r--r--core/fxcrt/cfx_bytestring.cpp106
-rw-r--r--core/fxcrt/cfx_bytestring.h10
-rw-r--r--core/fxcrt/cfx_bytestring_unittest.cpp47
-rw-r--r--core/fxcrt/cfx_string_c_template.h42
-rw-r--r--core/fxcrt/cfx_widestring.cpp139
-rw-r--r--core/fxcrt/cfx_widestring.h10
-rw-r--r--core/fxcrt/cfx_widestring_unittest.cpp17
7 files changed, 179 insertions, 192 deletions
diff --git a/core/fxcrt/cfx_bytestring.cpp b/core/fxcrt/cfx_bytestring.cpp
index f6074e961b..ac390949ee 100644
--- a/core/fxcrt/cfx_bytestring.cpp
+++ b/core/fxcrt/cfx_bytestring.cpp
@@ -456,24 +456,39 @@ void CFX_ByteString::Concat(const char* pSrcData, FX_STRSIZE nSrcLen) {
m_pData.Swap(pNewData);
}
-CFX_ByteString CFX_ByteString::Mid(FX_STRSIZE nFirst, FX_STRSIZE nCount) const {
- ASSERT(nCount >= 0);
+CFX_ByteString CFX_ByteString::Mid(FX_STRSIZE first, FX_STRSIZE count) const {
if (!m_pData)
return CFX_ByteString();
- nFirst = pdfium::clamp(nFirst, 0, m_pData->m_nDataLength);
- nCount = pdfium::clamp(nCount, 0, m_pData->m_nDataLength - nFirst);
- if (nCount == 0)
+ if (!IsValidIndex(first))
+ return CFX_ByteString();
+
+ if (count == 0 || !IsValidLength(count))
+ return CFX_ByteString();
+
+ if (!IsValidIndex(first + count - 1))
return CFX_ByteString();
- if (nFirst == 0 && nCount == m_pData->m_nDataLength)
+ if (first == 0 && count == m_pData->m_nDataLength)
return *this;
CFX_ByteString dest;
- AllocCopy(dest, nCount, nFirst);
+ AllocCopy(dest, count, first);
return dest;
}
+CFX_ByteString CFX_ByteString::Left(FX_STRSIZE count) const {
+ if (count == 0 || !IsValidLength(count))
+ return CFX_ByteString();
+ return Mid(0, count);
+}
+
+CFX_ByteString CFX_ByteString::Right(FX_STRSIZE count) const {
+ if (count == 0 || !IsValidLength(count))
+ return CFX_ByteString();
+ return Mid(GetLength() - count, count);
+}
+
void CFX_ByteString::AllocCopy(CFX_ByteString& dest,
FX_STRSIZE nCopyLen,
FX_STRSIZE nCopyIndex) const {
@@ -519,78 +534,51 @@ void CFX_ByteString::Format(const char* pFormat, ...) {
}
void CFX_ByteString::SetAt(FX_STRSIZE index, char c) {
- ASSERT(index >= 0 && index < GetLength());
+ ASSERT(IsValidIndex(index));
ReallocBeforeWrite(m_pData->m_nDataLength);
m_pData->m_String[index] = c;
}
-FX_STRSIZE CFX_ByteString::Insert(FX_STRSIZE index, char ch) {
+FX_STRSIZE CFX_ByteString::Insert(FX_STRSIZE location, char ch) {
const FX_STRSIZE cur_length = m_pData ? m_pData->m_nDataLength : 0;
- if (index != pdfium::clamp(index, 0, cur_length))
+ if (!IsValidLength(location))
return cur_length;
const FX_STRSIZE new_length = cur_length + 1;
ReallocBeforeWrite(new_length);
- memmove(m_pData->m_String + index + 1, m_pData->m_String + index,
- new_length - index);
- m_pData->m_String[index] = ch;
+ memmove(m_pData->m_String + location + 1, m_pData->m_String + location,
+ new_length - location);
+ m_pData->m_String[location] = ch;
m_pData->m_nDataLength = new_length;
return new_length;
}
-CFX_ByteString CFX_ByteString::Right(FX_STRSIZE nCount) const {
- if (!m_pData)
- return CFX_ByteString();
-
- nCount = std::max(nCount, 0);
- if (nCount >= m_pData->m_nDataLength)
- return *this;
-
- CFX_ByteString dest;
- AllocCopy(dest, nCount, m_pData->m_nDataLength - nCount);
- return dest;
-}
-
-CFX_ByteString CFX_ByteString::Left(FX_STRSIZE nCount) const {
- if (!m_pData)
- return CFX_ByteString();
-
- nCount = std::max(nCount, 0);
- if (nCount >= m_pData->m_nDataLength)
- return *this;
-
- CFX_ByteString dest;
- AllocCopy(dest, nCount, 0);
- return dest;
-}
-
pdfium::Optional<FX_STRSIZE> CFX_ByteString::Find(char ch,
- FX_STRSIZE nStart) const {
+ FX_STRSIZE start) const {
if (!m_pData)
return pdfium::Optional<FX_STRSIZE>();
- if (nStart < 0 || nStart >= m_pData->m_nDataLength)
+ if (!IsValidIndex(start))
return pdfium::Optional<FX_STRSIZE>();
const char* pStr = static_cast<const char*>(
- memchr(m_pData->m_String + nStart, ch, m_pData->m_nDataLength - nStart));
+ memchr(m_pData->m_String + start, ch, m_pData->m_nDataLength - start));
return pStr ? pdfium::Optional<FX_STRSIZE>(
static_cast<FX_STRSIZE>(pStr - m_pData->m_String))
: pdfium::Optional<FX_STRSIZE>();
}
-pdfium::Optional<FX_STRSIZE> CFX_ByteString::Find(const CFX_ByteStringC& pSub,
- FX_STRSIZE nStart) const {
+pdfium::Optional<FX_STRSIZE> CFX_ByteString::Find(const CFX_ByteStringC& subStr,
+ FX_STRSIZE start) const {
if (!m_pData)
return pdfium::Optional<FX_STRSIZE>();
- FX_STRSIZE nLength = m_pData->m_nDataLength;
- if (nStart > nLength)
+ if (!IsValidIndex(start))
return pdfium::Optional<FX_STRSIZE>();
const char* pStr =
- FX_strstr(m_pData->m_String + nStart, m_pData->m_nDataLength - nStart,
- pSub.unterminated_c_str(), pSub.GetLength());
+ FX_strstr(m_pData->m_String + start, m_pData->m_nDataLength - start,
+ subStr.unterminated_c_str(), subStr.GetLength());
return pStr ? pdfium::Optional<FX_STRSIZE>(
static_cast<FX_STRSIZE>(pStr - m_pData->m_String))
: pdfium::Optional<FX_STRSIZE>();
@@ -653,7 +641,7 @@ FX_STRSIZE CFX_ByteString::Remove(char chRemove) {
}
*pstrDest = 0;
- FX_STRSIZE nCount = (FX_STRSIZE)(pstrSource - pstrDest);
+ FX_STRSIZE nCount = static_cast<FX_STRSIZE>(pstrSource - pstrDest);
m_pData->m_nDataLength -= nCount;
return nCount;
}
@@ -669,7 +657,7 @@ FX_STRSIZE CFX_ByteString::Replace(const CFX_ByteStringC& pOld,
const char* pStart = m_pData->m_String;
char* pEnd = m_pData->m_String + m_pData->m_nDataLength;
while (1) {
- const char* pTarget = FX_strstr(pStart, (FX_STRSIZE)(pEnd - pStart),
+ const char* pTarget = FX_strstr(pStart, static_cast<int>(pEnd - pStart),
pOld.unterminated_c_str(), nSourceLen);
if (!pTarget)
break;
@@ -692,7 +680,7 @@ FX_STRSIZE CFX_ByteString::Replace(const CFX_ByteStringC& pOld,
pStart = m_pData->m_String;
char* pDest = pNewData->m_String;
for (FX_STRSIZE i = 0; i < nCount; i++) {
- const char* pTarget = FX_strstr(pStart, (FX_STRSIZE)(pEnd - pStart),
+ const char* pTarget = FX_strstr(pStart, static_cast<int>(pEnd - pStart),
pOld.unterminated_c_str(), nSourceLen);
memcpy(pDest, pStart, pTarget - pStart);
pDest += pTarget - pStart;
@@ -708,7 +696,7 @@ FX_STRSIZE CFX_ByteString::Replace(const CFX_ByteStringC& pOld,
CFX_WideString CFX_ByteString::UTF8Decode() const {
CFX_UTF8Decoder decoder;
for (FX_STRSIZE i = 0; i < GetLength(); i++) {
- decoder.Input((uint8_t)m_pData->m_String[i]);
+ decoder.Input(static_cast<uint8_t>(m_pData->m_String[i]));
}
return CFX_WideString(decoder.GetResult());
}
@@ -722,14 +710,14 @@ int CFX_ByteString::Compare(const CFX_ByteStringC& str) const {
if (!m_pData) {
return str.IsEmpty() ? 0 : -1;
}
- int this_len = m_pData->m_nDataLength;
- int that_len = str.GetLength();
- int min_len = this_len < that_len ? this_len : that_len;
- for (int i = 0; i < min_len; i++) {
- if ((uint8_t)m_pData->m_String[i] < str[i]) {
+ FX_STRSIZE this_len = m_pData->m_nDataLength;
+ FX_STRSIZE that_len = str.GetLength();
+ FX_STRSIZE min_len = std::min(this_len, that_len);
+ for (FX_STRSIZE i = 0; i < min_len; i++) {
+ if (static_cast<uint8_t>(m_pData->m_String[i]) < str[i]) {
return -1;
}
- if ((uint8_t)m_pData->m_String[i] > str[i]) {
+ if (static_cast<uint8_t>(m_pData->m_String[i]) > str[i]) {
return 1;
}
}
@@ -836,7 +824,7 @@ FX_STRSIZE FX_ftoa(float d, char* buf) {
return 1;
}
char buf2[32];
- int buf_size = 0;
+ FX_STRSIZE buf_size = 0;
if (bNegative) {
buf[buf_size++] = '-';
}
diff --git a/core/fxcrt/cfx_bytestring.h b/core/fxcrt/cfx_bytestring.h
index 10675be7a5..a8a28169a5 100644
--- a/core/fxcrt/cfx_bytestring.h
+++ b/core/fxcrt/cfx_bytestring.h
@@ -84,6 +84,14 @@ class CFX_ByteString {
}
bool IsEmpty() const { return !GetLength(); }
+ bool IsValidIndex(FX_STRSIZE index) const {
+ return 0 <= index && index < GetLength();
+ }
+
+ bool IsValidLength(FX_STRSIZE length) const {
+ return 0 <= length && length <= GetLength();
+ }
+
int Compare(const CFX_ByteStringC& str) const;
bool EqualNoCase(const CFX_ByteStringC& str) const;
@@ -109,7 +117,7 @@ class CFX_ByteString {
const CFX_ByteString& operator+=(const CFX_ByteStringC& bstrc);
CharType operator[](const FX_STRSIZE index) const {
- ASSERT(index >= 0 && index < GetLength());
+ ASSERT(IsValidIndex(index));
return m_pData ? m_pData->m_String[index] : 0;
}
diff --git a/core/fxcrt/cfx_bytestring_unittest.cpp b/core/fxcrt/cfx_bytestring_unittest.cpp
index e7281546fb..497e0b6c2f 100644
--- a/core/fxcrt/cfx_bytestring_unittest.cpp
+++ b/core/fxcrt/cfx_bytestring_unittest.cpp
@@ -291,7 +291,7 @@ TEST(fxcrt, ByteStringOperatorNE) {
TEST(fxcrt, ByteStringCNull) {
CFX_ByteStringC null_string;
EXPECT_FALSE(null_string.raw_str());
- EXPECT_EQ(null_string.GetLength(), 0);
+ EXPECT_EQ(0, null_string.GetLength());
EXPECT_TRUE(null_string.IsEmpty());
CFX_ByteStringC another_null_string;
@@ -299,27 +299,27 @@ TEST(fxcrt, ByteStringCNull) {
CFX_ByteStringC copied_null_string(null_string);
EXPECT_FALSE(copied_null_string.raw_str());
- EXPECT_EQ(copied_null_string.GetLength(), 0);
+ EXPECT_EQ(0, copied_null_string.GetLength());
EXPECT_TRUE(copied_null_string.IsEmpty());
EXPECT_EQ(null_string, copied_null_string);
CFX_ByteStringC empty_string(""); // Pointer to NUL, not NULL pointer.
EXPECT_TRUE(empty_string.raw_str());
- EXPECT_EQ(empty_string.GetLength(), 0);
+ EXPECT_EQ(0, empty_string.GetLength());
EXPECT_TRUE(empty_string.IsEmpty());
EXPECT_EQ(null_string, empty_string);
CFX_ByteStringC assigned_null_string("initially not nullptr");
assigned_null_string = null_string;
EXPECT_FALSE(assigned_null_string.raw_str());
- EXPECT_EQ(assigned_null_string.GetLength(), 0);
+ EXPECT_EQ(0, assigned_null_string.GetLength());
EXPECT_TRUE(assigned_null_string.IsEmpty());
EXPECT_EQ(null_string, assigned_null_string);
CFX_ByteStringC assigned_nullptr_string("initially not nullptr");
assigned_nullptr_string = nullptr;
EXPECT_FALSE(assigned_nullptr_string.raw_str());
- EXPECT_EQ(assigned_nullptr_string.GetLength(), 0);
+ EXPECT_EQ(0, assigned_nullptr_string.GetLength());
EXPECT_TRUE(assigned_nullptr_string.IsEmpty());
EXPECT_EQ(null_string, assigned_nullptr_string);
@@ -345,13 +345,6 @@ TEST(fxcrt, ByteStringConcat) {
fred.Concat("DY", 2);
EXPECT_EQ("FREDDY", fred);
EXPECT_EQ("FRED", copy);
-
- // Test invalid arguments.
- copy = fred;
- fred.Concat("freddy", -6);
- CFX_ByteString not_aliased("xxxxxx");
- EXPECT_EQ("FREDDY", fred);
- EXPECT_EQ("xxxxxx", not_aliased);
}
TEST(fxcrt, ByteStringRemove) {
@@ -524,10 +517,10 @@ TEST(fxcrt, ByteStringMid) {
EXPECT_EQ("D", fred.Mid(3, 1));
EXPECT_EQ("FR", fred.Mid(0, 2));
EXPECT_EQ("FRED", fred.Mid(0, 4));
- EXPECT_EQ("FRED", fred.Mid(0, 10));
+ EXPECT_EQ("", fred.Mid(0, 10));
- EXPECT_EQ("FR", fred.Mid(-1, 2));
- EXPECT_EQ("RED", fred.Mid(1, 4));
+ EXPECT_EQ("", fred.Mid(-1, 2));
+ EXPECT_EQ("RED", fred.Mid(1, 3));
EXPECT_EQ("", fred.Mid(4, 1));
CFX_ByteString empty;
@@ -542,7 +535,7 @@ TEST(fxcrt, ByteStringLeft) {
EXPECT_EQ("FRE", fred.Left(3));
EXPECT_EQ("FRED", fred.Left(4));
- EXPECT_EQ("FRED", fred.Left(5));
+ EXPECT_EQ("", fred.Left(5));
EXPECT_EQ("", fred.Left(-1));
CFX_ByteString empty;
@@ -559,7 +552,7 @@ TEST(fxcrt, ByteStringRight) {
EXPECT_EQ("RED", fred.Right(3));
EXPECT_EQ("FRED", fred.Right(4));
- EXPECT_EQ("FRED", fred.Right(5));
+ EXPECT_EQ("", fred.Right(5));
EXPECT_EQ("", fred.Right(-1));
CFX_ByteString empty;
@@ -1004,31 +997,31 @@ TEST(fxcrt, ByteStringCMid) {
EXPECT_EQ(null_string, null_string.Mid(1, 1));
CFX_ByteStringC empty_string("");
- EXPECT_EQ(empty_string, empty_string.Mid(0, 1));
- EXPECT_EQ(empty_string, empty_string.Mid(1, 1));
+ EXPECT_EQ("", empty_string.Mid(0, 1));
+ EXPECT_EQ("", empty_string.Mid(1, 1));
CFX_ByteStringC single_character("a");
- EXPECT_EQ(empty_string, single_character.Mid(0, 0));
+ EXPECT_EQ("", single_character.Mid(0, 0));
EXPECT_EQ(single_character, single_character.Mid(0, 1));
- EXPECT_EQ(empty_string, single_character.Mid(1, 0));
- EXPECT_EQ(empty_string, single_character.Mid(1, 1));
+ EXPECT_EQ("", single_character.Mid(1, 0));
+ EXPECT_EQ("", single_character.Mid(1, 1));
CFX_ByteStringC longer_string("abcdef");
EXPECT_EQ(longer_string, longer_string.Mid(0, 6));
- EXPECT_EQ(longer_string, longer_string.Mid(0, 187));
- EXPECT_EQ(longer_string, longer_string.Mid(-42, 6));
- EXPECT_EQ(longer_string, longer_string.Mid(-42, 187));
+ EXPECT_EQ("", longer_string.Mid(0, 187));
+ EXPECT_EQ("", longer_string.Mid(-42, 6));
+ EXPECT_EQ("", longer_string.Mid(-42, 187));
CFX_ByteStringC leading_substring("ab");
EXPECT_EQ(leading_substring, longer_string.Mid(0, 2));
- EXPECT_EQ(leading_substring, longer_string.Mid(-1, 2));
+ EXPECT_EQ("", longer_string.Mid(-1, 2));
CFX_ByteStringC middle_substring("bcde");
EXPECT_EQ(middle_substring, longer_string.Mid(1, 4));
CFX_ByteStringC trailing_substring("ef");
EXPECT_EQ(trailing_substring, longer_string.Mid(4, 2));
- EXPECT_EQ(trailing_substring, longer_string.Mid(4, 3));
+ EXPECT_EQ("", longer_string.Mid(4, 3));
}
TEST(fxcrt, ByteStringCElementAccess) {
diff --git a/core/fxcrt/cfx_string_c_template.h b/core/fxcrt/cfx_string_c_template.h
index db8b274410..c46b0c4671 100644
--- a/core/fxcrt/cfx_string_c_template.h
+++ b/core/fxcrt/cfx_string_c_template.h
@@ -119,15 +119,24 @@ class CFX_StringCTemplate {
}
FX_STRSIZE GetLength() const { return m_Length; }
+
bool IsEmpty() const { return m_Length == 0; }
+ bool IsValidIndex(FX_STRSIZE index) const {
+ return 0 <= index && index < GetLength();
+ }
+
+ bool IsValidLength(FX_STRSIZE length) const {
+ return 0 <= length && length <= GetLength();
+ }
+
const UnsignedType& operator[](const FX_STRSIZE index) const {
- ASSERT(index >= 0 && index < GetLength());
+ ASSERT(IsValidIndex(index));
return m_Ptr.Get()[index];
}
const CharType CharAt(const FX_STRSIZE index) const {
- ASSERT(index >= 0 && index < GetLength());
+ ASSERT(IsValidIndex(index));
return static_cast<CharType>(m_Ptr.Get()[index]);
}
@@ -141,33 +150,32 @@ class CFX_StringCTemplate {
bool Contains(CharType ch) const { return Find(ch).has_value(); }
- CFX_StringCTemplate Mid(FX_STRSIZE index, FX_STRSIZE count) const {
- ASSERT(count >= 0);
- if (index > m_Length)
+ CFX_StringCTemplate Mid(FX_STRSIZE first, FX_STRSIZE count) const {
+ if (!m_Ptr.Get())
return CFX_StringCTemplate();
- index = pdfium::clamp(index, 0, m_Length);
- count = pdfium::clamp(count, 0, m_Length - index);
- if (count == 0)
+ if (!IsValidIndex(first))
return CFX_StringCTemplate();
- return CFX_StringCTemplate(m_Ptr.Get() + index, count);
+ if (count == 0 || !IsValidLength(count))
+ return CFX_StringCTemplate();
+
+ if (!IsValidIndex(first + count - 1))
+ return CFX_StringCTemplate();
+
+ return CFX_StringCTemplate(m_Ptr.Get() + first, count);
}
CFX_StringCTemplate Left(FX_STRSIZE count) const {
- count = pdfium::clamp(count, 0, m_Length);
- if (count == 0)
+ if (count == 0 || !IsValidLength(count))
return CFX_StringCTemplate();
-
- return CFX_StringCTemplate(m_Ptr.Get(), count);
+ return Mid(0, count);
}
CFX_StringCTemplate Right(FX_STRSIZE count) const {
- count = pdfium::clamp(count, 0, m_Length);
- if (count == 0)
+ if (count == 0 || !IsValidLength(count))
return CFX_StringCTemplate();
-
- return CFX_StringCTemplate(m_Ptr.Get() + m_Length - count, count);
+ return Mid(GetLength() - count, count);
}
bool operator<(const CFX_StringCTemplate& that) const {
diff --git a/core/fxcrt/cfx_widestring.cpp b/core/fxcrt/cfx_widestring.cpp
index 76fdf24b2c..6e4e82d09d 100644
--- a/core/fxcrt/cfx_widestring.cpp
+++ b/core/fxcrt/cfx_widestring.cpp
@@ -459,7 +459,7 @@ void CFX_WideString::ReallocBeforeWrite(FX_STRSIZE nNewLength) {
if (m_pData && m_pData->CanOperateInPlace(nNewLength))
return;
- if (nNewLength <= 0) {
+ if (nNewLength == 0) {
clear();
return;
}
@@ -552,7 +552,7 @@ FX_STRSIZE CFX_WideString::Delete(FX_STRSIZE index, FX_STRSIZE count) {
return old_length;
ReallocBeforeWrite(old_length);
- int chars_to_copy = old_length - removal_length + 1;
+ FX_STRSIZE chars_to_copy = old_length - removal_length + 1;
wmemmove(m_pData->m_String + index, m_pData->m_String + removal_length,
chars_to_copy);
m_pData->m_nDataLength = old_length - count;
@@ -602,24 +602,39 @@ CFX_ByteString CFX_WideString::UTF16LE_Encode() const {
return result;
}
-CFX_WideString CFX_WideString::Mid(FX_STRSIZE nFirst, FX_STRSIZE nCount) const {
- ASSERT(nCount >= 0);
+CFX_WideString CFX_WideString::Mid(FX_STRSIZE first, FX_STRSIZE count) const {
if (!m_pData)
return CFX_WideString();
- nFirst = pdfium::clamp(nFirst, 0, m_pData->m_nDataLength);
- nCount = pdfium::clamp(nCount, 0, m_pData->m_nDataLength - nFirst);
- if (nCount == 0)
+ if (!IsValidIndex(first))
+ return CFX_WideString();
+
+ if (count == 0 || !IsValidLength(count))
return CFX_WideString();
- if (nFirst == 0 && nCount == m_pData->m_nDataLength)
+ if (!IsValidIndex(first + count - 1))
+ return CFX_WideString();
+
+ if (first == 0 && count == GetLength())
return *this;
CFX_WideString dest;
- AllocCopy(dest, nCount, nFirst);
+ AllocCopy(dest, count, first);
return dest;
}
+CFX_WideString CFX_WideString::Left(FX_STRSIZE count) const {
+ if (count == 0 || !IsValidLength(count))
+ return CFX_WideString();
+ return Mid(0, count);
+}
+
+CFX_WideString CFX_WideString::Right(FX_STRSIZE count) const {
+ if (count == 0 || !IsValidLength(count))
+ return CFX_WideString();
+ return Mid(GetLength() - count, count);
+}
+
void CFX_WideString::AllocCopy(CFX_WideString& dest,
FX_STRSIZE nCopyLen,
FX_STRSIZE nCopyIndex) const {
@@ -651,24 +666,25 @@ bool CFX_WideString::TryVSWPrintf(FX_STRSIZE size,
return bSufficientBuffer;
}
-void CFX_WideString::FormatV(const wchar_t* pFormat, va_list argList) {
+void CFX_WideString::FormatV(const wchar_t* format, va_list argList) {
va_list argListCopy;
FX_VA_COPY(argListCopy, argList);
- FX_STRSIZE nMaxLen = vswprintf(nullptr, 0, pFormat, argListCopy);
+ int maxLen = vswprintf(nullptr, 0, format, argListCopy);
va_end(argListCopy);
- if (nMaxLen <= 0) {
- auto guess = GuessSizeForVSWPrintf(pFormat, argListCopy);
+ if (maxLen <= 0) {
+ auto guess = GuessSizeForVSWPrintf(format, argListCopy);
if (!guess.has_value())
return;
- nMaxLen = guess.value();
+ maxLen = guess.value();
}
- while (nMaxLen < 32 * 1024) {
+ while (maxLen < 32 * 1024) {
FX_VA_COPY(argListCopy, argList);
- bool bSufficientBuffer = TryVSWPrintf(nMaxLen, pFormat, argListCopy);
+ bool bSufficientBuffer =
+ TryVSWPrintf(static_cast<FX_STRSIZE>(maxLen), format, argListCopy);
va_end(argListCopy);
if (bSufficientBuffer)
break;
- nMaxLen *= 2;
+ maxLen *= 2;
}
}
@@ -679,73 +695,46 @@ void CFX_WideString::Format(const wchar_t* pFormat, ...) {
va_end(argList);
}
-FX_STRSIZE CFX_WideString::Insert(FX_STRSIZE index, wchar_t ch) {
+FX_STRSIZE CFX_WideString::Insert(FX_STRSIZE location, wchar_t ch) {
const FX_STRSIZE cur_length = m_pData ? m_pData->m_nDataLength : 0;
- if (index != pdfium::clamp(index, 0, cur_length))
+ if (!IsValidLength(location))
return cur_length;
const FX_STRSIZE new_length = cur_length + 1;
ReallocBeforeWrite(new_length);
- wmemmove(m_pData->m_String + index + 1, m_pData->m_String + index,
- new_length - index);
- m_pData->m_String[index] = ch;
+ wmemmove(m_pData->m_String + location + 1, m_pData->m_String + location,
+ new_length - location);
+ m_pData->m_String[location] = ch;
m_pData->m_nDataLength = new_length;
return new_length;
}
-CFX_WideString CFX_WideString::Right(FX_STRSIZE nCount) const {
- if (!m_pData)
- return CFX_WideString();
-
- nCount = std::max(nCount, 0);
- if (nCount >= m_pData->m_nDataLength)
- return *this;
-
- CFX_WideString dest;
- AllocCopy(dest, nCount, m_pData->m_nDataLength - nCount);
- return dest;
-}
-
-CFX_WideString CFX_WideString::Left(FX_STRSIZE nCount) const {
- if (!m_pData)
- return CFX_WideString();
-
- nCount = std::max(nCount, 0);
- if (nCount >= m_pData->m_nDataLength)
- return *this;
-
- CFX_WideString dest;
- AllocCopy(dest, nCount, 0);
- return dest;
-}
-
pdfium::Optional<FX_STRSIZE> CFX_WideString::Find(wchar_t ch,
- FX_STRSIZE nStart) const {
+ FX_STRSIZE start) const {
if (!m_pData)
return pdfium::Optional<FX_STRSIZE>();
- if (nStart < 0 || nStart >= m_pData->m_nDataLength)
+ if (!IsValidIndex(start))
return pdfium::Optional<FX_STRSIZE>();
const wchar_t* pStr =
- wmemchr(m_pData->m_String + nStart, ch, m_pData->m_nDataLength - nStart);
+ wmemchr(m_pData->m_String + start, ch, m_pData->m_nDataLength - start);
return pStr ? pdfium::Optional<FX_STRSIZE>(
static_cast<FX_STRSIZE>(pStr - m_pData->m_String))
: pdfium::Optional<FX_STRSIZE>();
}
-pdfium::Optional<FX_STRSIZE> CFX_WideString::Find(const CFX_WideStringC& pSub,
- FX_STRSIZE nStart) const {
+pdfium::Optional<FX_STRSIZE> CFX_WideString::Find(const CFX_WideStringC& subStr,
+ FX_STRSIZE start) const {
if (!m_pData)
return pdfium::Optional<FX_STRSIZE>();
- FX_STRSIZE nLength = m_pData->m_nDataLength;
- if (nStart > nLength)
+ if (!IsValidIndex(start))
return pdfium::Optional<FX_STRSIZE>();
const wchar_t* pStr =
- FX_wcsstr(m_pData->m_String + nStart, m_pData->m_nDataLength - nStart,
- pSub.unterminated_c_str(), pSub.GetLength());
+ FX_wcsstr(m_pData->m_String + start, m_pData->m_nDataLength - start,
+ subStr.unterminated_c_str(), subStr.GetLength());
return pStr ? pdfium::Optional<FX_STRSIZE>(
static_cast<FX_STRSIZE>(pStr - m_pData->m_String))
: pdfium::Optional<FX_STRSIZE>();
@@ -796,9 +785,9 @@ FX_STRSIZE CFX_WideString::Remove(wchar_t chRemove) {
}
*pstrDest = 0;
- FX_STRSIZE nCount = (FX_STRSIZE)(pstrSource - pstrDest);
- m_pData->m_nDataLength -= nCount;
- return nCount;
+ FX_STRSIZE count = static_cast<FX_STRSIZE>(pstrSource - pstrDest);
+ m_pData->m_nDataLength -= count;
+ return count;
}
FX_STRSIZE CFX_WideString::Replace(const CFX_WideStringC& pOld,
@@ -808,7 +797,7 @@ FX_STRSIZE CFX_WideString::Replace(const CFX_WideStringC& pOld,
FX_STRSIZE nSourceLen = pOld.GetLength();
FX_STRSIZE nReplacementLen = pNew.GetLength();
- FX_STRSIZE nCount = 0;
+ FX_STRSIZE count = 0;
const wchar_t* pStart = m_pData->m_String;
wchar_t* pEnd = m_pData->m_String + m_pData->m_nDataLength;
while (1) {
@@ -817,24 +806,24 @@ FX_STRSIZE CFX_WideString::Replace(const CFX_WideStringC& pOld,
if (!pTarget)
break;
- nCount++;
+ count++;
pStart = pTarget + nSourceLen;
}
- if (nCount == 0)
+ if (count == 0)
return 0;
FX_STRSIZE nNewLength =
- m_pData->m_nDataLength + (nReplacementLen - nSourceLen) * nCount;
+ m_pData->m_nDataLength + (nReplacementLen - nSourceLen) * count;
if (nNewLength == 0) {
clear();
- return nCount;
+ return count;
}
CFX_RetainPtr<StringData> pNewData(StringData::Create(nNewLength));
pStart = m_pData->m_String;
wchar_t* pDest = pNewData->m_String;
- for (FX_STRSIZE i = 0; i < nCount; i++) {
+ for (FX_STRSIZE i = 0; i < count; i++) {
const wchar_t* pTarget = FX_wcsstr(pStart, (FX_STRSIZE)(pEnd - pStart),
pOld.unterminated_c_str(), nSourceLen);
wmemcpy(pDest, pStart, pTarget - pStart);
@@ -845,7 +834,7 @@ FX_STRSIZE CFX_WideString::Replace(const CFX_WideStringC& pOld,
}
wmemcpy(pDest, pStart, pEnd - pStart);
m_pData.Swap(pNewData);
- return nCount;
+ return count;
}
// static
@@ -874,13 +863,13 @@ CFX_WideString CFX_WideString::FromUTF8(const CFX_ByteStringC& str) {
// static
CFX_WideString CFX_WideString::FromUTF16LE(const unsigned short* wstr,
FX_STRSIZE wlen) {
- if (!wstr || 0 == wlen) {
+ if (!wstr || wlen <= 0) {
return CFX_WideString();
}
CFX_WideString result;
wchar_t* buf = result.GetBuffer(wlen);
- for (int i = 0; i < wlen; i++) {
+ for (FX_STRSIZE i = 0; i < wlen; i++) {
buf[i] = wstr[i];
}
result.ReleaseBuffer(wlen);
@@ -888,7 +877,7 @@ CFX_WideString CFX_WideString::FromUTF16LE(const unsigned short* wstr,
}
void CFX_WideString::SetAt(FX_STRSIZE index, wchar_t c) {
- ASSERT(index >= 0 && index < GetLength());
+ ASSERT(IsValidIndex(index));
ReallocBeforeWrite(m_pData->m_nDataLength);
m_pData->m_String[index] = c;
}
@@ -909,10 +898,10 @@ int CFX_WideString::Compare(const CFX_WideString& str) const {
if (!str.m_pData) {
return 1;
}
- int this_len = m_pData->m_nDataLength;
- int that_len = str.m_pData->m_nDataLength;
- int min_len = this_len < that_len ? this_len : that_len;
- for (int i = 0; i < min_len; i++) {
+ FX_STRSIZE this_len = m_pData->m_nDataLength;
+ FX_STRSIZE that_len = str.m_pData->m_nDataLength;
+ FX_STRSIZE min_len = std::min(this_len, that_len);
+ for (FX_STRSIZE i = 0; i < min_len; i++) {
if (m_pData->m_String[i] < str.m_pData->m_String[i]) {
return -1;
}
@@ -1035,7 +1024,7 @@ float FX_wtof(const wchar_t* str, int len) {
cc++;
}
}
- fraction += (float)integer;
+ fraction += static_cast<float>(integer);
return bNegative ? -fraction : fraction;
}
diff --git a/core/fxcrt/cfx_widestring.h b/core/fxcrt/cfx_widestring.h
index a6d0eca044..242138853b 100644
--- a/core/fxcrt/cfx_widestring.h
+++ b/core/fxcrt/cfx_widestring.h
@@ -81,6 +81,14 @@ class CFX_WideString {
}
bool IsEmpty() const { return !GetLength(); }
+ bool IsValidIndex(FX_STRSIZE index) const {
+ return 0 <= index && index < GetLength();
+ }
+
+ bool IsValidLength(FX_STRSIZE length) const {
+ return 0 <= length && length <= GetLength();
+ }
+
const CFX_WideString& operator=(const wchar_t* str);
const CFX_WideString& operator=(const CFX_WideString& stringSrc);
const CFX_WideString& operator=(const CFX_WideStringC& stringSrc);
@@ -103,7 +111,7 @@ class CFX_WideString {
bool operator<(const CFX_WideString& str) const;
CharType operator[](const FX_STRSIZE index) const {
- ASSERT(index >= 0 && index < GetLength());
+ ASSERT(IsValidIndex(index));
return m_pData ? m_pData->m_String[index] : 0;
}
diff --git a/core/fxcrt/cfx_widestring_unittest.cpp b/core/fxcrt/cfx_widestring_unittest.cpp
index e688a5334e..0005cb3754 100644
--- a/core/fxcrt/cfx_widestring_unittest.cpp
+++ b/core/fxcrt/cfx_widestring_unittest.cpp
@@ -304,13 +304,6 @@ TEST(fxcrt, WideStringConcatInPlace) {
fred.Concat(L"DY", 2);
EXPECT_EQ(L"FREDDY", fred);
EXPECT_EQ(L"FRED", copy);
-
- // Test invalid arguments.
- copy = fred;
- fred.Concat(L"freddy", -6);
- CFX_WideString not_aliased(L"xxxxxx");
- EXPECT_EQ(L"FREDDY", fred);
- EXPECT_EQ(L"xxxxxx", not_aliased);
}
TEST(fxcrt, WideStringRemove) {
@@ -483,10 +476,10 @@ TEST(fxcrt, WideStringMid) {
EXPECT_EQ(L"D", fred.Mid(3, 1));
EXPECT_EQ(L"FR", fred.Mid(0, 2));
EXPECT_EQ(L"FRED", fred.Mid(0, 4));
- EXPECT_EQ(L"FRED", fred.Mid(0, 10));
+ EXPECT_EQ(L"", fred.Mid(0, 10));
- EXPECT_EQ(L"FR", fred.Mid(-1, 2));
- EXPECT_EQ(L"RED", fred.Mid(1, 4));
+ EXPECT_EQ(L"", fred.Mid(-1, 2));
+ EXPECT_EQ(L"", fred.Mid(1, 4));
EXPECT_EQ(L"", fred.Mid(4, 1));
CFX_WideString empty;
@@ -501,7 +494,7 @@ TEST(fxcrt, WideStringLeft) {
EXPECT_EQ(L"FRE", fred.Left(3));
EXPECT_EQ(L"FRED", fred.Left(4));
- EXPECT_EQ(L"FRED", fred.Left(5));
+ EXPECT_EQ(L"", fred.Left(5));
EXPECT_EQ(L"", fred.Left(-1));
CFX_WideString empty;
@@ -518,7 +511,7 @@ TEST(fxcrt, WideStringRight) {
EXPECT_EQ(L"RED", fred.Right(3));
EXPECT_EQ(L"FRED", fred.Right(4));
- EXPECT_EQ(L"FRED", fred.Right(5));
+ EXPECT_EQ(L"", fred.Right(5));
EXPECT_EQ(L"", fred.Right(-1));
CFX_WideString empty;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 15:49:12 +0000