| // 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 <stddef.h> |
| |
| #include <cctype> |
| |
| #include "core/fxcrt/include/fx_basic.h" |
| #include "third_party/base/numerics/safe_math.h" |
| |
| static int _Buffer_itoa(char* buf, int i, uint32_t flags) { |
| if (i == 0) { |
| buf[0] = '0'; |
| return 1; |
| } |
| char buf1[32]; |
| int buf_pos = 31; |
| uint32_t u = i; |
| if ((flags & FXFORMAT_SIGNED) && i < 0) { |
| u = -i; |
| } |
| int base = 10; |
| const FX_CHAR* str = "0123456789abcdef"; |
| if (flags & FXFORMAT_HEX) { |
| base = 16; |
| if (flags & FXFORMAT_CAPITAL) { |
| str = "0123456789ABCDEF"; |
| } |
| } |
| while (u != 0) { |
| buf1[buf_pos--] = str[u % base]; |
| u = u / base; |
| } |
| if ((flags & FXFORMAT_SIGNED) && i < 0) { |
| buf1[buf_pos--] = '-'; |
| } |
| int len = 31 - buf_pos; |
| for (int ii = 0; ii < len; ii++) { |
| buf[ii] = buf1[ii + buf_pos + 1]; |
| } |
| return len; |
| } |
| CFX_ByteString CFX_ByteString::FormatInteger(int i, uint32_t flags) { |
| char buf[32]; |
| return CFX_ByteStringC(buf, _Buffer_itoa(buf, i, flags)); |
| } |
| |
| // static |
| CFX_ByteString::StringData* CFX_ByteString::StringData::Create(int nLen) { |
| // |nLen| is currently declared as in |int|. TODO(palmer): It should be |
| // a |size_t|, or at least unsigned. |
| if (nLen == 0 || nLen < 0) { |
| return NULL; |
| } |
| |
| // Fixed portion of header plus a NUL char not included in m_nAllocLength. |
| // sizeof(FX_CHAR) is always 1, used for consistency with CFX_Widestring. |
| int overhead = offsetof(StringData, m_String) + sizeof(FX_CHAR); |
| pdfium::base::CheckedNumeric<int> nSize = nLen; |
| nSize += overhead; |
| |
| // Now round to an 8-byte boundary. We'd expect that this is the minimum |
| // granularity of any of the underlying allocators, so there may be cases |
| // where we can save a re-alloc when adding a few characters to a string |
| // by using this otherwise wasted space. |
| nSize += 7; |
| int totalSize = nSize.ValueOrDie() & ~7; |
| int usableSize = totalSize - overhead; |
| FXSYS_assert(usableSize >= nLen); |
| |
| void* pData = FX_Alloc(uint8_t, totalSize); |
| return new (pData) StringData(nLen, usableSize); |
| } |
| CFX_ByteString::~CFX_ByteString() { |
| if (m_pData) { |
| m_pData->Release(); |
| } |
| } |
| CFX_ByteString::CFX_ByteString(const FX_CHAR* lpsz, FX_STRSIZE nLen) { |
| if (nLen < 0) { |
| nLen = lpsz ? FXSYS_strlen(lpsz) : 0; |
| } |
| if (nLen) { |
| m_pData = StringData::Create(nLen); |
| if (m_pData) { |
| FXSYS_memcpy(m_pData->m_String, lpsz, nLen); |
| } |
| } else { |
| m_pData = NULL; |
| } |
| } |
| CFX_ByteString::CFX_ByteString(const uint8_t* lpsz, FX_STRSIZE nLen) { |
| if (nLen > 0) { |
| m_pData = StringData::Create(nLen); |
| if (m_pData) { |
| FXSYS_memcpy(m_pData->m_String, lpsz, nLen); |
| } |
| } else { |
| m_pData = NULL; |
| } |
| } |
| CFX_ByteString::CFX_ByteString(char ch) { |
| m_pData = StringData::Create(1); |
| if (m_pData) { |
| m_pData->m_String[0] = ch; |
| } |
| } |
| CFX_ByteString::CFX_ByteString(const CFX_ByteString& stringSrc) { |
| if (!stringSrc.m_pData) { |
| m_pData = NULL; |
| return; |
| } |
| if (stringSrc.m_pData->m_nRefs >= 0) { |
| m_pData = stringSrc.m_pData; |
| m_pData->Retain(); |
| } else { |
| m_pData = NULL; |
| *this = stringSrc; |
| } |
| } |
| CFX_ByteString::CFX_ByteString(const CFX_ByteStringC& stringSrc) { |
| if (stringSrc.IsEmpty()) { |
| m_pData = NULL; |
| return; |
| } |
| m_pData = NULL; |
| *this = stringSrc; |
| } |
| CFX_ByteString::CFX_ByteString(const CFX_ByteStringC& str1, |
| const CFX_ByteStringC& str2) { |
| m_pData = NULL; |
| int nNewLen = str1.GetLength() + str2.GetLength(); |
| if (nNewLen == 0) { |
| return; |
| } |
| m_pData = StringData::Create(nNewLen); |
| if (m_pData) { |
| FXSYS_memcpy(m_pData->m_String, str1.GetCStr(), str1.GetLength()); |
| FXSYS_memcpy(m_pData->m_String + str1.GetLength(), str2.GetCStr(), |
| str2.GetLength()); |
| } |
| } |
| const CFX_ByteString& CFX_ByteString::operator=(const FX_CHAR* lpsz) { |
| if (!lpsz || lpsz[0] == 0) { |
| Empty(); |
| } else { |
| AssignCopy(FXSYS_strlen(lpsz), lpsz); |
| } |
| return *this; |
| } |
| const CFX_ByteString& CFX_ByteString::operator=(const CFX_ByteStringC& str) { |
| if (str.IsEmpty()) { |
| Empty(); |
| } else { |
| AssignCopy(str.GetLength(), str.GetCStr()); |
| } |
| return *this; |
| } |
| const CFX_ByteString& CFX_ByteString::operator=( |
| const CFX_ByteString& stringSrc) { |
| if (m_pData == stringSrc.m_pData) { |
| return *this; |
| } |
| if (stringSrc.IsEmpty()) { |
| Empty(); |
| } else if ((m_pData && m_pData->m_nRefs < 0) || |
| (stringSrc.m_pData && stringSrc.m_pData->m_nRefs < 0)) { |
| AssignCopy(stringSrc.m_pData->m_nDataLength, stringSrc.m_pData->m_String); |
| } else { |
| Empty(); |
| m_pData = stringSrc.m_pData; |
| if (m_pData) { |
| m_pData->Retain(); |
| } |
| } |
| return *this; |
| } |
| const CFX_ByteString& CFX_ByteString::operator=(const CFX_BinaryBuf& buf) { |
| Load(buf.GetBuffer(), buf.GetSize()); |
| return *this; |
| } |
| void CFX_ByteString::Load(const uint8_t* buf, FX_STRSIZE len) { |
| Empty(); |
| if (len) { |
| m_pData = StringData::Create(len); |
| if (m_pData) { |
| FXSYS_memcpy(m_pData->m_String, buf, len); |
| } |
| } else { |
| m_pData = NULL; |
| } |
| } |
| const CFX_ByteString& CFX_ByteString::operator+=(const FX_CHAR* lpsz) { |
| if (lpsz) { |
| ConcatInPlace(FXSYS_strlen(lpsz), lpsz); |
| } |
| return *this; |
| } |
| const CFX_ByteString& CFX_ByteString::operator+=(char ch) { |
| ConcatInPlace(1, &ch); |
| return *this; |
| } |
| const CFX_ByteString& CFX_ByteString::operator+=(const CFX_ByteString& str) { |
| if (!str.m_pData) { |
| return *this; |
| } |
| ConcatInPlace(str.m_pData->m_nDataLength, str.m_pData->m_String); |
| return *this; |
| } |
| const CFX_ByteString& CFX_ByteString::operator+=(const CFX_ByteStringC& str) { |
| if (str.IsEmpty()) { |
| return *this; |
| } |
| ConcatInPlace(str.GetLength(), str.GetCStr()); |
| return *this; |
| } |
| bool CFX_ByteString::Equal(const char* ptr) const { |
| if (!m_pData) { |
| return !ptr || ptr[0] == '\0'; |
| } |
| if (!ptr) { |
| return m_pData->m_nDataLength == 0; |
| } |
| return FXSYS_strlen(ptr) == m_pData->m_nDataLength && |
| FXSYS_memcmp(ptr, m_pData->m_String, m_pData->m_nDataLength) == 0; |
| } |
| bool CFX_ByteString::Equal(const CFX_ByteStringC& str) const { |
| if (!m_pData) { |
| return str.IsEmpty(); |
| } |
| return m_pData->m_nDataLength == str.GetLength() && |
| FXSYS_memcmp(m_pData->m_String, str.GetCStr(), str.GetLength()) == 0; |
| } |
| bool CFX_ByteString::Equal(const CFX_ByteString& other) const { |
| if (IsEmpty()) { |
| return other.IsEmpty(); |
| } |
| if (other.IsEmpty()) { |
| return false; |
| } |
| return other.m_pData->m_nDataLength == m_pData->m_nDataLength && |
| FXSYS_memcmp(other.m_pData->m_String, m_pData->m_String, |
| m_pData->m_nDataLength) == 0; |
| } |
| void CFX_ByteString::Empty() { |
| if (m_pData) { |
| m_pData->Release(); |
| m_pData = NULL; |
| } |
| } |
| bool CFX_ByteString::EqualNoCase(const CFX_ByteStringC& str) const { |
| if (!m_pData) { |
| return str.IsEmpty(); |
| } |
| FX_STRSIZE len = str.GetLength(); |
| if (m_pData->m_nDataLength != len) { |
| return false; |
| } |
| const uint8_t* pThis = (const uint8_t*)m_pData->m_String; |
| const uint8_t* pThat = str.GetPtr(); |
| for (FX_STRSIZE i = 0; i < len; i++) { |
| if ((*pThis) != (*pThat)) { |
| uint8_t bThis = *pThis; |
| if (bThis >= 'A' && bThis <= 'Z') { |
| bThis += 'a' - 'A'; |
| } |
| uint8_t bThat = *pThat; |
| if (bThat >= 'A' && bThat <= 'Z') { |
| bThat += 'a' - 'A'; |
| } |
| if (bThis != bThat) { |
| return false; |
| } |
| } |
| pThis++; |
| pThat++; |
| } |
| return true; |
| } |
| void CFX_ByteString::AssignCopy(FX_STRSIZE nSrcLen, |
| const FX_CHAR* lpszSrcData) { |
| AllocBeforeWrite(nSrcLen); |
| FXSYS_memcpy(m_pData->m_String, lpszSrcData, nSrcLen); |
| m_pData->m_nDataLength = nSrcLen; |
| m_pData->m_String[nSrcLen] = 0; |
| } |
| void CFX_ByteString::CopyBeforeWrite() { |
| if (!m_pData || m_pData->m_nRefs <= 1) { |
| return; |
| } |
| StringData* pData = m_pData; |
| m_pData->Release(); |
| FX_STRSIZE nDataLength = pData->m_nDataLength; |
| m_pData = StringData::Create(nDataLength); |
| if (m_pData) { |
| FXSYS_memcpy(m_pData->m_String, pData->m_String, nDataLength + 1); |
| } |
| } |
| void CFX_ByteString::AllocBeforeWrite(FX_STRSIZE nLen) { |
| if (m_pData && m_pData->m_nRefs <= 1 && m_pData->m_nAllocLength >= nLen) { |
| return; |
| } |
| Empty(); |
| m_pData = StringData::Create(nLen); |
| } |
| void CFX_ByteString::ReleaseBuffer(FX_STRSIZE nNewLength) { |
| if (!m_pData) { |
| return; |
| } |
| CopyBeforeWrite(); |
| if (nNewLength == -1) { |
| nNewLength = FXSYS_strlen((const FX_CHAR*)m_pData->m_String); |
| } |
| if (nNewLength == 0) { |
| Empty(); |
| return; |
| } |
| FXSYS_assert(nNewLength <= m_pData->m_nAllocLength); |
| m_pData->m_nDataLength = nNewLength; |
| m_pData->m_String[nNewLength] = 0; |
| } |
| void CFX_ByteString::Reserve(FX_STRSIZE len) { |
| GetBuffer(len); |
| ReleaseBuffer(GetLength()); |
| } |
| FX_CHAR* CFX_ByteString::GetBuffer(FX_STRSIZE nMinBufLength) { |
| if (!m_pData && nMinBufLength == 0) { |
| return NULL; |
| } |
| if (m_pData && m_pData->m_nRefs <= 1 && |
| m_pData->m_nAllocLength >= nMinBufLength) { |
| return m_pData->m_String; |
| } |
| if (!m_pData) { |
| m_pData = StringData::Create(nMinBufLength); |
| if (!m_pData) { |
| return NULL; |
| } |
| m_pData->m_nDataLength = 0; |
| m_pData->m_String[0] = 0; |
| return m_pData->m_String; |
| } |
| StringData* pOldData = m_pData; |
| FX_STRSIZE nOldLen = pOldData->m_nDataLength; |
| if (nMinBufLength < nOldLen) { |
| nMinBufLength = nOldLen; |
| } |
| m_pData = StringData::Create(nMinBufLength); |
| if (!m_pData) { |
| return NULL; |
| } |
| FXSYS_memcpy(m_pData->m_String, pOldData->m_String, (nOldLen + 1)); |
| m_pData->m_nDataLength = nOldLen; |
| pOldData->Release(); |
| return m_pData->m_String; |
| } |
| FX_STRSIZE CFX_ByteString::Delete(FX_STRSIZE nIndex, FX_STRSIZE nCount) { |
| if (!m_pData) { |
| return 0; |
| } |
| if (nIndex < 0) { |
| nIndex = 0; |
| } |
| FX_STRSIZE nOldLength = m_pData->m_nDataLength; |
| if (nCount > 0 && nIndex < nOldLength) { |
| FX_STRSIZE mLength = nIndex + nCount; |
| if (mLength >= nOldLength) { |
| m_pData->m_nDataLength = nIndex; |
| return m_pData->m_nDataLength; |
| } |
| CopyBeforeWrite(); |
| int nBytesToCopy = nOldLength - mLength + 1; |
| FXSYS_memmove(m_pData->m_String + nIndex, m_pData->m_String + mLength, |
| nBytesToCopy); |
| m_pData->m_nDataLength = nOldLength - nCount; |
| } |
| return m_pData->m_nDataLength; |
| } |
| void CFX_ByteString::ConcatInPlace(FX_STRSIZE nSrcLen, |
| const FX_CHAR* lpszSrcData) { |
| if (nSrcLen == 0 || !lpszSrcData) { |
| return; |
| } |
| if (!m_pData) { |
| m_pData = StringData::Create(nSrcLen); |
| if (!m_pData) { |
| return; |
| } |
| FXSYS_memcpy(m_pData->m_String, lpszSrcData, nSrcLen); |
| return; |
| } |
| if (m_pData->m_nRefs > 1 || |
| m_pData->m_nDataLength + nSrcLen > m_pData->m_nAllocLength) { |
| ConcatCopy(m_pData->m_nDataLength, m_pData->m_String, nSrcLen, lpszSrcData); |
| } else { |
| FXSYS_memcpy(m_pData->m_String + m_pData->m_nDataLength, lpszSrcData, |
| nSrcLen); |
| m_pData->m_nDataLength += nSrcLen; |
| m_pData->m_String[m_pData->m_nDataLength] = 0; |
| } |
| } |
| void CFX_ByteString::ConcatCopy(FX_STRSIZE nSrc1Len, |
| const FX_CHAR* lpszSrc1Data, |
| FX_STRSIZE nSrc2Len, |
| const FX_CHAR* lpszSrc2Data) { |
| int nNewLen = nSrc1Len + nSrc2Len; |
| if (nNewLen <= 0) { |
| return; |
| } |
| // Don't release until done copying, might be one of the arguments. |
| StringData* pOldData = m_pData; |
| m_pData = StringData::Create(nNewLen); |
| if (m_pData) { |
| memcpy(m_pData->m_String, lpszSrc1Data, nSrc1Len); |
| memcpy(m_pData->m_String + nSrc1Len, lpszSrc2Data, nSrc2Len); |
| } |
| pOldData->Release(); |
| } |
| CFX_ByteString CFX_ByteString::Mid(FX_STRSIZE nFirst) const { |
| if (!m_pData) { |
| return CFX_ByteString(); |
| } |
| return Mid(nFirst, m_pData->m_nDataLength - nFirst); |
| } |
| CFX_ByteString CFX_ByteString::Mid(FX_STRSIZE nFirst, FX_STRSIZE nCount) const { |
| if (nFirst < 0) { |
| nFirst = 0; |
| } |
| if (nCount < 0) { |
| nCount = 0; |
| } |
| if (nFirst + nCount > m_pData->m_nDataLength) { |
| nCount = m_pData->m_nDataLength - nFirst; |
| } |
| if (nFirst > m_pData->m_nDataLength) { |
| nCount = 0; |
| } |
| if (nFirst == 0 && nFirst + nCount == m_pData->m_nDataLength) { |
| return *this; |
| } |
| CFX_ByteString dest; |
| AllocCopy(dest, nCount, nFirst); |
| return dest; |
| } |
| void CFX_ByteString::AllocCopy(CFX_ByteString& dest, |
| FX_STRSIZE nCopyLen, |
| FX_STRSIZE nCopyIndex) const { |
| // |FX_STRSIZE| is currently typedef'd as in |int|. TODO(palmer): It |
| // should be a |size_t|, or at least unsigned. |
| if (nCopyLen == 0 || nCopyLen < 0) { |
| return; |
| } |
| ASSERT(!dest.m_pData); |
| dest.m_pData = StringData::Create(nCopyLen); |
| if (dest.m_pData) { |
| FXSYS_memcpy(dest.m_pData->m_String, m_pData->m_String + nCopyIndex, |
| nCopyLen); |
| } |
| } |
| #define FORCE_ANSI 0x10000 |
| #define FORCE_UNICODE 0x20000 |
| #define FORCE_INT64 0x40000 |
| void CFX_ByteString::FormatV(const FX_CHAR* lpszFormat, va_list argList) { |
| va_list argListSave; |
| #if defined(__ARMCC_VERSION) || \ |
| (!defined(_MSC_VER) && (_FX_CPU_ == _FX_X64_ || _FX_CPU_ == _FX_IA64_ || \ |
| _FX_CPU_ == _FX_ARM64_)) || \ |
| defined(__native_client__) |
| va_copy(argListSave, argList); |
| #else |
| argListSave = argList; |
| #endif |
| int nMaxLen = 0; |
| for (const FX_CHAR* lpsz = lpszFormat; *lpsz != 0; lpsz++) { |
| if (*lpsz != '%' || *(lpsz = lpsz + 1) == '%') { |
| nMaxLen += FXSYS_strlen(lpsz); |
| continue; |
| } |
| int nItemLen = 0; |
| int nWidth = 0; |
| for (; *lpsz != 0; lpsz++) { |
| if (*lpsz == '#') { |
| nMaxLen += 2; |
| } else if (*lpsz == '*') { |
| nWidth = va_arg(argList, int); |
| } else if (*lpsz != '-' && *lpsz != '+' && *lpsz != '0' && *lpsz != ' ') { |
| break; |
| } |
| } |
| if (nWidth == 0) { |
| nWidth = FXSYS_atoi(lpsz); |
| while (std::isdigit(*lpsz)) |
| lpsz++; |
| } |
| if (nWidth < 0 || nWidth > 128 * 1024) { |
| lpszFormat = "Bad width"; |
| nMaxLen = 10; |
| break; |
| } |
| int nPrecision = 0; |
| if (*lpsz == '.') { |
| lpsz++; |
| if (*lpsz == '*') { |
| nPrecision = va_arg(argList, int); |
| lpsz++; |
| } else { |
| nPrecision = FXSYS_atoi(lpsz); |
| while (std::isdigit(*lpsz)) |
| lpsz++; |
| } |
| } |
| if (nPrecision < 0 || nPrecision > 128 * 1024) { |
| lpszFormat = "Bad precision"; |
| nMaxLen = 14; |
| break; |
| } |
| int nModifier = 0; |
| if (FXSYS_strncmp(lpsz, "I64", 3) == 0) { |
| lpsz += 3; |
| nModifier = FORCE_INT64; |
| } else { |
| switch (*lpsz) { |
| case 'h': |
| nModifier = FORCE_ANSI; |
| lpsz++; |
| break; |
| case 'l': |
| nModifier = FORCE_UNICODE; |
| lpsz++; |
| break; |
| case 'F': |
| case 'N': |
| case 'L': |
| lpsz++; |
| break; |
| } |
| } |
| switch (*lpsz | nModifier) { |
| case 'c': |
| case 'C': |
| nItemLen = 2; |
| va_arg(argList, int); |
| break; |
| case 'c' | FORCE_ANSI: |
| case 'C' | FORCE_ANSI: |
| nItemLen = 2; |
| va_arg(argList, int); |
| break; |
| case 'c' | FORCE_UNICODE: |
| case 'C' | FORCE_UNICODE: |
| nItemLen = 2; |
| va_arg(argList, int); |
| break; |
| case 's': { |
| const FX_CHAR* pstrNextArg = va_arg(argList, const FX_CHAR*); |
| if (pstrNextArg) { |
| nItemLen = FXSYS_strlen(pstrNextArg); |
| if (nItemLen < 1) { |
| nItemLen = 1; |
| } |
| } else { |
| nItemLen = 6; |
| } |
| } break; |
| case 'S': { |
| FX_WCHAR* pstrNextArg = va_arg(argList, FX_WCHAR*); |
| if (pstrNextArg) { |
| nItemLen = FXSYS_wcslen(pstrNextArg); |
| if (nItemLen < 1) { |
| nItemLen = 1; |
| } |
| } else { |
| nItemLen = 6; |
| } |
| } break; |
| case 's' | FORCE_ANSI: |
| case 'S' | FORCE_ANSI: { |
| const FX_CHAR* pstrNextArg = va_arg(argList, const FX_CHAR*); |
| if (pstrNextArg) { |
| nItemLen = FXSYS_strlen(pstrNextArg); |
| if (nItemLen < 1) { |
| nItemLen = 1; |
| } |
| } else { |
| nItemLen = 6; |
| } |
| } break; |
| case 's' | FORCE_UNICODE: |
| case 'S' | FORCE_UNICODE: { |
| FX_WCHAR* pstrNextArg = va_arg(argList, FX_WCHAR*); |
| if (pstrNextArg) { |
| nItemLen = FXSYS_wcslen(pstrNextArg); |
| if (nItemLen < 1) { |
| nItemLen = 1; |
| } |
| } else { |
| nItemLen = 6; |
| } |
| } break; |
| } |
| if (nItemLen != 0) { |
| if (nPrecision != 0 && nItemLen > nPrecision) { |
| nItemLen = nPrecision; |
| } |
| if (nItemLen < nWidth) { |
| nItemLen = nWidth; |
| } |
| } else { |
| switch (*lpsz) { |
| case 'd': |
| case 'i': |
| case 'u': |
| case 'x': |
| case 'X': |
| case 'o': |
| if (nModifier & FORCE_INT64) { |
| va_arg(argList, int64_t); |
| } else { |
| va_arg(argList, int); |
| } |
| nItemLen = 32; |
| if (nItemLen < nWidth + nPrecision) { |
| nItemLen = nWidth + nPrecision; |
| } |
| break; |
| case 'a': |
| case 'A': |
| case 'e': |
| case 'E': |
| case 'g': |
| case 'G': |
| va_arg(argList, double); |
| nItemLen = 128; |
| if (nItemLen < nWidth + nPrecision) { |
| nItemLen = nWidth + nPrecision; |
| } |
| break; |
| case 'f': |
| if (nWidth + nPrecision > 100) { |
| nItemLen = nPrecision + nWidth + 128; |
| } else { |
| char pszTemp[256]; |
| double f = va_arg(argList, double); |
| memset(pszTemp, 0, sizeof(pszTemp)); |
| FXSYS_snprintf(pszTemp, sizeof(pszTemp) - 1, "%*.*f", nWidth, |
| nPrecision + 6, f); |
| nItemLen = FXSYS_strlen(pszTemp); |
| } |
| break; |
| case 'p': |
| va_arg(argList, void*); |
| nItemLen = 32; |
| if (nItemLen < nWidth + nPrecision) { |
| nItemLen = nWidth + nPrecision; |
| } |
| break; |
| case 'n': |
| va_arg(argList, int*); |
| break; |
| } |
| } |
| nMaxLen += nItemLen; |
| } |
| nMaxLen += 32; // Fudge factor. |
| GetBuffer(nMaxLen); |
| if (m_pData) { |
| memset(m_pData->m_String, 0, nMaxLen); |
| FXSYS_vsnprintf(m_pData->m_String, nMaxLen - 1, lpszFormat, argListSave); |
| ReleaseBuffer(); |
| } |
| va_end(argListSave); |
| } |
| void CFX_ByteString::Format(const FX_CHAR* lpszFormat, ...) { |
| va_list argList; |
| va_start(argList, lpszFormat); |
| FormatV(lpszFormat, argList); |
| va_end(argList); |
| } |
| FX_STRSIZE CFX_ByteString::Insert(FX_STRSIZE nIndex, FX_CHAR ch) { |
| CopyBeforeWrite(); |
| if (nIndex < 0) { |
| nIndex = 0; |
| } |
| FX_STRSIZE nNewLength = m_pData ? m_pData->m_nDataLength : 0; |
| if (nIndex > nNewLength) { |
| nIndex = nNewLength; |
| } |
| nNewLength++; |
| if (!m_pData || m_pData->m_nAllocLength < nNewLength) { |
| StringData* pOldData = m_pData; |
| const FX_CHAR* pstr = m_pData->m_String; |
| m_pData = StringData::Create(nNewLength); |
| if (!m_pData) { |
| return 0; |
| } |
| if (pOldData) { |
| FXSYS_memmove(m_pData->m_String, pstr, (pOldData->m_nDataLength + 1)); |
| pOldData->Release(); |
| } else { |
| m_pData->m_String[0] = 0; |
| } |
| } |
| FXSYS_memmove(m_pData->m_String + nIndex + 1, m_pData->m_String + nIndex, |
| (nNewLength - nIndex)); |
| m_pData->m_String[nIndex] = ch; |
| m_pData->m_nDataLength = nNewLength; |
| return nNewLength; |
| } |
| CFX_ByteString CFX_ByteString::Right(FX_STRSIZE nCount) const { |
| if (!m_pData) { |
| return CFX_ByteString(); |
| } |
| if (nCount < 0) { |
| 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(); |
| } |
| if (nCount < 0) { |
| nCount = 0; |
| } |
| if (nCount >= m_pData->m_nDataLength) { |
| return *this; |
| } |
| CFX_ByteString dest; |
| AllocCopy(dest, nCount, 0); |
| return dest; |
| } |
| FX_STRSIZE CFX_ByteString::Find(FX_CHAR ch, FX_STRSIZE nStart) const { |
| if (!m_pData) { |
| return -1; |
| } |
| FX_STRSIZE nLength = m_pData->m_nDataLength; |
| if (nStart >= nLength) { |
| return -1; |
| } |
| const FX_CHAR* lpsz = FXSYS_strchr(m_pData->m_String + nStart, ch); |
| return lpsz ? (int)(lpsz - m_pData->m_String) : -1; |
| } |
| FX_STRSIZE CFX_ByteString::ReverseFind(FX_CHAR ch) const { |
| if (!m_pData) { |
| return -1; |
| } |
| FX_STRSIZE nLength = m_pData->m_nDataLength; |
| while (nLength) { |
| if (m_pData->m_String[nLength - 1] == ch) { |
| return nLength - 1; |
| } |
| nLength--; |
| } |
| return -1; |
| } |
| const FX_CHAR* FX_strstr(const FX_CHAR* str1, |
| int len1, |
| const FX_CHAR* str2, |
| int len2) { |
| if (len2 > len1 || len2 == 0) { |
| return NULL; |
| } |
| const FX_CHAR* end_ptr = str1 + len1 - len2; |
| while (str1 <= end_ptr) { |
| int i = 0; |
| while (1) { |
| if (str1[i] != str2[i]) { |
| break; |
| } |
| i++; |
| if (i == len2) { |
| return str1; |
| } |
| } |
| str1++; |
| } |
| return NULL; |
| } |
| FX_STRSIZE CFX_ByteString::Find(const CFX_ByteStringC& lpszSub, |
| FX_STRSIZE nStart) const { |
| if (!m_pData) { |
| return -1; |
| } |
| FX_STRSIZE nLength = m_pData->m_nDataLength; |
| if (nStart > nLength) { |
| return -1; |
| } |
| const FX_CHAR* lpsz = |
| FX_strstr(m_pData->m_String + nStart, m_pData->m_nDataLength - nStart, |
| lpszSub.GetCStr(), lpszSub.GetLength()); |
| return lpsz ? (int)(lpsz - m_pData->m_String) : -1; |
| } |
| void CFX_ByteString::MakeLower() { |
| if (!m_pData) { |
| return; |
| } |
| CopyBeforeWrite(); |
| if (GetLength() < 1) { |
| return; |
| } |
| FXSYS_strlwr(m_pData->m_String); |
| } |
| void CFX_ByteString::MakeUpper() { |
| if (!m_pData) { |
| return; |
| } |
| CopyBeforeWrite(); |
| if (GetLength() < 1) { |
| return; |
| } |
| FXSYS_strupr(m_pData->m_String); |
| } |
| FX_STRSIZE CFX_ByteString::Remove(FX_CHAR chRemove) { |
| if (!m_pData) { |
| return 0; |
| } |
| CopyBeforeWrite(); |
| if (GetLength() < 1) { |
| return 0; |
| } |
| FX_CHAR* pstrSource = m_pData->m_String; |
| FX_CHAR* pstrDest = m_pData->m_String; |
| FX_CHAR* pstrEnd = m_pData->m_String + m_pData->m_nDataLength; |
| while (pstrSource < pstrEnd) { |
| if (*pstrSource != chRemove) { |
| *pstrDest = *pstrSource; |
| pstrDest++; |
| } |
| pstrSource++; |
| } |
| *pstrDest = 0; |
| FX_STRSIZE nCount = (FX_STRSIZE)(pstrSource - pstrDest); |
| m_pData->m_nDataLength -= nCount; |
| return nCount; |
| } |
| FX_STRSIZE CFX_ByteString::Replace(const CFX_ByteStringC& lpszOld, |
| const CFX_ByteStringC& lpszNew) { |
| if (!m_pData) { |
| return 0; |
| } |
| if (lpszOld.IsEmpty()) { |
| return 0; |
| } |
| FX_STRSIZE nSourceLen = lpszOld.GetLength(); |
| FX_STRSIZE nReplacementLen = lpszNew.GetLength(); |
| FX_STRSIZE nCount = 0; |
| const FX_CHAR* pStart = m_pData->m_String; |
| FX_CHAR* pEnd = m_pData->m_String + m_pData->m_nDataLength; |
| while (1) { |
| const FX_CHAR* pTarget = FX_strstr(pStart, (FX_STRSIZE)(pEnd - pStart), |
| lpszOld.GetCStr(), nSourceLen); |
| if (!pTarget) { |
| break; |
| } |
| nCount++; |
| pStart = pTarget + nSourceLen; |
| } |
| if (nCount == 0) { |
| return 0; |
| } |
| FX_STRSIZE nNewLength = |
| m_pData->m_nDataLength + (nReplacementLen - nSourceLen) * nCount; |
| if (nNewLength == 0) { |
| Empty(); |
| return nCount; |
| } |
| StringData* pNewData = StringData::Create(nNewLength); |
| if (!pNewData) { |
| return 0; |
| } |
| pStart = m_pData->m_String; |
| FX_CHAR* pDest = pNewData->m_String; |
| for (FX_STRSIZE i = 0; i < nCount; i++) { |
| const FX_CHAR* pTarget = FX_strstr(pStart, (FX_STRSIZE)(pEnd - pStart), |
| lpszOld.GetCStr(), nSourceLen); |
| FXSYS_memcpy(pDest, pStart, pTarget - pStart); |
| pDest += pTarget - pStart; |
| FXSYS_memcpy(pDest, lpszNew.GetCStr(), lpszNew.GetLength()); |
| pDest += lpszNew.GetLength(); |
| pStart = pTarget + nSourceLen; |
| } |
| FXSYS_memcpy(pDest, pStart, pEnd - pStart); |
| m_pData->Release(); |
| m_pData = pNewData; |
| return nCount; |
| } |
| void CFX_ByteString::SetAt(FX_STRSIZE nIndex, FX_CHAR ch) { |
| if (!m_pData) { |
| return; |
| } |
| FXSYS_assert(nIndex >= 0); |
| FXSYS_assert(nIndex < m_pData->m_nDataLength); |
| CopyBeforeWrite(); |
| m_pData->m_String[nIndex] = ch; |
| } |
| 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]); |
| } |
| return decoder.GetResult(); |
| } |
| |
| // static |
| CFX_ByteString CFX_ByteString::FromUnicode(const FX_WCHAR* str, |
| FX_STRSIZE len) { |
| FX_STRSIZE str_len = len >= 0 ? len : FXSYS_wcslen(str); |
| return FromUnicode(CFX_WideString(str, str_len)); |
| } |
| |
| // static |
| CFX_ByteString CFX_ByteString::FromUnicode(const CFX_WideString& str) { |
| return CFX_CharMap::GetByteString(0, str); |
| } |
| |
| 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.GetAt(i)) { |
| return -1; |
| } |
| if ((uint8_t)m_pData->m_String[i] > str.GetAt(i)) { |
| return 1; |
| } |
| } |
| if (this_len < that_len) { |
| return -1; |
| } |
| if (this_len > that_len) { |
| return 1; |
| } |
| return 0; |
| } |
| void CFX_ByteString::TrimRight(const CFX_ByteStringC& lpszTargets) { |
| if (!m_pData || lpszTargets.IsEmpty()) { |
| return; |
| } |
| CopyBeforeWrite(); |
| FX_STRSIZE pos = GetLength(); |
| if (pos < 1) { |
| return; |
| } |
| while (pos) { |
| FX_STRSIZE i = 0; |
| while (i < lpszTargets.GetLength() && |
| lpszTargets[i] != m_pData->m_String[pos - 1]) { |
| i++; |
| } |
| if (i == lpszTargets.GetLength()) { |
| break; |
| } |
| pos--; |
| } |
| if (pos < m_pData->m_nDataLength) { |
| m_pData->m_String[pos] = 0; |
| m_pData->m_nDataLength = pos; |
| } |
| } |
| void CFX_ByteString::TrimRight(FX_CHAR chTarget) { |
| TrimRight(CFX_ByteStringC(chTarget)); |
| } |
| void CFX_ByteString::TrimRight() { |
| TrimRight("\x09\x0a\x0b\x0c\x0d\x20"); |
| } |
| void CFX_ByteString::TrimLeft(const CFX_ByteStringC& lpszTargets) { |
| if (!m_pData) { |
| return; |
| } |
| if (lpszTargets.IsEmpty()) { |
| return; |
| } |
| CopyBeforeWrite(); |
| FX_STRSIZE len = GetLength(); |
| if (len < 1) { |
| return; |
| } |
| FX_STRSIZE pos = 0; |
| while (pos < len) { |
| FX_STRSIZE i = 0; |
| while (i < lpszTargets.GetLength() && |
| lpszTargets[i] != m_pData->m_String[pos]) { |
| i++; |
| } |
| if (i == lpszTargets.GetLength()) { |
| break; |
| } |
| pos++; |
| } |
| if (pos) { |
| FX_STRSIZE nDataLength = len - pos; |
| FXSYS_memmove(m_pData->m_String, m_pData->m_String + pos, |
| (nDataLength + 1) * sizeof(FX_CHAR)); |
| m_pData->m_nDataLength = nDataLength; |
| } |
| } |
| void CFX_ByteString::TrimLeft(FX_CHAR chTarget) { |
| TrimLeft(CFX_ByteStringC(chTarget)); |
| } |
| void CFX_ByteString::TrimLeft() { |
| TrimLeft("\x09\x0a\x0b\x0c\x0d\x20"); |
| } |
| uint32_t CFX_ByteString::GetID(FX_STRSIZE start_pos) const { |
| return CFX_ByteStringC(*this).GetID(start_pos); |
| } |
| uint32_t CFX_ByteStringC::GetID(FX_STRSIZE start_pos) const { |
| if (m_Length == 0) { |
| return 0; |
| } |
| if (start_pos < 0 || start_pos >= m_Length) { |
| return 0; |
| } |
| uint32_t strid = 0; |
| if (start_pos + 4 > m_Length) { |
| for (FX_STRSIZE i = 0; i < m_Length - start_pos; i++) { |
| strid = strid * 256 + m_Ptr[start_pos + i]; |
| } |
| strid = strid << ((4 - m_Length + start_pos) * 8); |
| } else { |
| for (int i = 0; i < 4; i++) { |
| strid = strid * 256 + m_Ptr[start_pos + i]; |
| } |
| } |
| return strid; |
| } |
| FX_STRSIZE FX_ftoa(FX_FLOAT d, FX_CHAR* buf) { |
| buf[0] = '0'; |
| buf[1] = '\0'; |
| if (d == 0.0f) { |
| return 1; |
| } |
| FX_BOOL bNegative = FALSE; |
| if (d < 0) { |
| bNegative = TRUE; |
| d = -d; |
| } |
| int scale = 1; |
| int scaled = FXSYS_round(d); |
| while (scaled < 100000) { |
| if (scale == 1000000) { |
| break; |
| } |
| scale *= 10; |
| scaled = FXSYS_round(d * scale); |
| } |
| if (scaled == 0) { |
| return 1; |
| } |
| char buf2[32]; |
| int buf_size = 0; |
| if (bNegative) { |
| buf[buf_size++] = '-'; |
| } |
| int i = scaled / scale; |
| FXSYS_itoa(i, buf2, 10); |
| FX_STRSIZE len = FXSYS_strlen(buf2); |
| FXSYS_memcpy(buf + buf_size, buf2, len); |
| buf_size += len; |
| int fraction = scaled % scale; |
| if (fraction == 0) { |
| return buf_size; |
| } |
| buf[buf_size++] = '.'; |
| scale /= 10; |
| while (fraction) { |
| buf[buf_size++] = '0' + fraction / scale; |
| fraction %= scale; |
| scale /= 10; |
| } |
| return buf_size; |
| } |
| CFX_ByteString CFX_ByteString::FormatFloat(FX_FLOAT d, int precision) { |
| FX_CHAR buf[32]; |
| FX_STRSIZE len = FX_ftoa(d, buf); |
| return CFX_ByteString(buf, len); |
| } |
