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Unified Diff: core/src/fxcrt/fx_basic_bstring.cpp

Issue 1800523005: Move core/src/ up to core/. (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@master
Patch Set: Created 4 years, 9 months ago
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Index: core/src/fxcrt/fx_basic_bstring.cpp
diff --git a/core/src/fxcrt/fx_basic_bstring.cpp b/core/src/fxcrt/fx_basic_bstring.cpp
deleted file mode 100644
index 5d38d57757e4d59d0be9ec4a20a95c2634ec4f55..0000000000000000000000000000000000000000
--- a/core/src/fxcrt/fx_basic_bstring.cpp
+++ /dev/null
@@ -1,1088 +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 <stddef.h>
-
-#include <cctype>
-
-#include "core/include/fxcrt/fx_basic.h"
-#include "third_party/base/numerics/safe_math.h"
-
-static int _Buffer_itoa(char* buf, int i, FX_DWORD flags) {
- if (i == 0) {
- buf[0] = '0';
- return 1;
- }
- char buf1[32];
- int buf_pos = 31;
- FX_DWORD 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, FX_DWORD 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");
-}
-FX_DWORD CFX_ByteString::GetID(FX_STRSIZE start_pos) const {
- return CFX_ByteStringC(*this).GetID(start_pos);
-}
-FX_DWORD CFX_ByteStringC::GetID(FX_STRSIZE start_pos) const {
- if (m_Length == 0) {
- return 0;
- }
- if (start_pos < 0 || start_pos >= m_Length) {
- return 0;
- }
- FX_DWORD 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);
-}
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