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tdepim/mimelib/dwstring.cpp

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//=============================================================================
// File: dwstring.cpp
// Contents: Definitions for DwString
// Maintainer: Doug Sauder <dwsauder@fwb.gulf.net>
// WWW: http://www.fwb.gulf.net/~dwsauder/mimepp.html
//
// Copyright (c) 1996, 1997 Douglas W. Sauder
// All rights reserved.
//
// IN NO EVENT SHALL DOUGLAS W. SAUDER BE LIABLE TO ANY PARTY FOR DIRECT,
// INDIRECT, SPECIAL, INCIDENTAL, OR CONSETQUENTIAL DAMAGES ARISING OUT OF
// THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF DOUGLAS W. SAUDER
// HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// DOUGLAS W. SAUDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT
// NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
// PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS"
// BASIS, AND DOUGLAS W. SAUDER HAS NO OBLIGATION TO PROVIDE MAINTENANCE,
// SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
//
//=============================================================================
#define DW_IMPLEMENTATION
#include <mimelib/config.h>
#include <mimelib/debug.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <new>
#include <mimelib/string.h>
// mmap
#include <unistd.h>
#include <sys/mman.h>
#define DW_MIN(a,b) ((a) <= (b) ? (a) : (b))
#define DW_MAX(a,b) ((a) >= (b) ? (a) : (b))
/* In some locales (such as tr_TR.UTF-8, az_AZ) using tolower() can cause
unexpected results. Keywords must be compared in a
locale-independent manner */
static char dw_asciitolower( const char c )
{
if ( c >= 'A' && c <= 'Z' )
return c - 'A' + 'a';
else
return c;
}
static char dw_asciitoupper( const char c )
{
if ( c >= 'a' && c <= 'z' )
return c - 'a' + 'A';
else
return c;
}
static int dw_strasciicasecmp(const char* s1, size_t len1, const char* s2,
size_t len2)
{
assert(s1 != 0);
assert(s2 != 0);
size_t len = DW_MIN(len1, len2);
for (size_t i=0; i < len; ++i) {
int c1 = dw_asciitolower( s1[i] );
int c2 = dw_asciitolower( s2[i] );
if ( c1 < c2 )
return -1;
else if ( c1 > c2 )
return 1;
}
if (len1 < len2) {
return -1;
}
else if (len1 > len2) {
return 1;
}
return 0;
}
#if 0
static int dw_strcasecmp(const char* s1, size_t len1, const char* s2,
size_t len2)
{
assert(s1 != 0);
assert(s2 != 0);
size_t len = DW_MIN(len1, len2);
for (size_t i=0; i < len; ++i) {
int c1 = tolower(s1[i]);
int c2 = tolower(s2[i]);
if (c1 < c2) {
return -1;
}
else if (c1 > c2) {
return 1;
}
}
if (len1 < len2) {
return -1;
}
else if (len1 > len2) {
return 1;
}
return 0;
}
#endif
static int dw_strcmp(const char* s1, size_t len1, const char* s2, size_t len2)
{
assert(s1 != 0);
assert(s2 != 0);
size_t len = DW_MIN(len1, len2);
for (size_t i=0; i < len; ++i) {
if (s1[i] < s2[i]) {
return -1;
}
else if (s1[i] > s2[i]) {
return 1;
}
}
if (len1 < len2) {
return -1;
}
else if (len1 > len2) {
return 1;
}
return 0;
}
// Copy
inline void mem_copy(const char* src, size_t n, char* dest)
{
assert(src != 0);
assert(dest != 0);
assert(src != dest);
if (n == 0 || src == dest || !src || !dest) return;
memmove(dest, src, n);
}
#if !defined(DW_USE_ANSI_STRING)
// Allocate buffer whose size is a power of 2
static char* mem_alloc(size_t* aSize)
{
assert(aSize != 0);
// minimum size is 32
size_t size = 32;
while (size < *aSize) {
size <<= 1;
}
*aSize = 0;
char* buf = new char[size];
if (buf != 0)
*aSize = size;
return buf;
}
// Free buffer
inline void mem_free(char* buf)
{
assert(buf != 0);
if (buf && buf != DwString::sEmptyBuffer)
delete [] buf;
}
inline DwStringRep* new_rep_reference(DwStringRep* rep)
{
assert(rep != 0);
++rep->mRefCount;
return rep;
}
inline void delete_rep_safely(DwStringRep* rep)
{
assert(rep != 0);
#if defined(DW_DEBUG_VERSION) || defined(DW_DEVELOPMENT_VERSION)
if (rep->mRefCount <= 0) {
std::cerr << "Error: attempt to delete a DwStringRep "
"with ref count <= 0" << std::endl;
std::cerr << "(Possibly 'delete' was called twice for same object)"
<< std::endl;
abort();
}
#endif // defined(DW_DEBUG_VERSION) || defined(DW_DEVELOPMENT_VERSION)
--rep->mRefCount;
if (rep->mRefCount == 0) {
delete rep;
}
}
//--------------------------------------------------------------------------
//DwStringRep* DwStringRep::theirPool = NULL;
//int DwStringRep::theirPoolCount = 0;
// DwStringRep takes ownership of the buffer passed as an argument
DwStringRep::DwStringRep(char* aBuf, size_t aSize)
{
assert(aBuf != 0);
mSize = aSize;
mBuffer = aBuf;
mRefCount = 1;
mPageMod = 0;
}
DwStringRep::DwStringRep(FILE* aFile, size_t aSize)
{
assert(aFile != 0);
static int pagesize = -1;
if (pagesize < 0)
pagesize = getpagesize();
assert(pagesize != 0);
int tell = ftell(aFile);
mPageMod = tell % pagesize;
mSize = aSize;
mRefCount = 1;
mBuffer = (char *)mmap(0, aSize + mPageMod, PROT_READ, MAP_SHARED, fileno(aFile), tell - mPageMod) + mPageMod;
++mPageMod;
if (mBuffer == MAP_FAILED) {
mBuffer = 0;
mSize = 0;
mPageMod = 0;
}
}
DwStringRep::~DwStringRep()
{
#if defined (DW_DEBUG_VERSION) || defined (DW_DEVELOPMENT_VERSION)
if (mBuffer == 0) {
std::cerr << "DwStringRep destructor called for bad DwStringRep object"
<< std::endl;
std::cerr << "(Possibly 'delete' was called twice for same object)"
<< std::endl;
abort();
}
#endif // defined (DW_DEBUG_VERSION) || defined (DW_DEVELOPMENT_VERSION)
if (mPageMod) {
--mPageMod;
munmap(mBuffer - mPageMod, mSize + mPageMod);
} else {
mem_free(mBuffer);
}
//DEV_STMT(mBuffer = 0)
}
void DwStringRep::CheckInvariants() const
{
#if defined (DW_DEBUG_VERSION)
assert(mBuffer != 0);
assert(mSize > 0);
assert(mRefCount > 0);
#endif // defined (DW_DEBUG_VERSION)
}
// Efficient memory management. May be used at some point in the future.
#if 0
void* DwStringRep::operator new(size_t sz)
{
void* rep;
if (theirPoolCount > 0) {
--theirPoolCount;
rep = theirPool;
theirPool = theirPool->mNext;
}
else {
rep = new char[sz];
}
return rep;
}
void DwStringRep::operator delete(void* aRep, size_t)
{
if (theirPoolCount < 200) {
DwStringRep* rep = (DwStringRep*) aRep;
++theirPoolCount;
rep->mNext = theirPool;
theirPool = rep;
}
else {
delete [] (char*) aRep;
}
}
#endif
//--------------------------------------------------------------------------
const size_t DwString::kEmptyBufferSize = 4;
char DW_EXPORT DwString::sEmptyBuffer[]=" ";
DwStringRep* DwString::sEmptyRep = 0;
const size_t DwString::npos = (size_t) -1;
DwString::DwString()
{
if (sEmptyRep == 0) {
sEmptyBuffer[0] = 0;
sEmptyRep = new DwStringRep(sEmptyBuffer, kEmptyBufferSize);
assert(sEmptyRep != 0);
}
DBG_STMT(sEmptyRep->CheckInvariants())
mRep = new_rep_reference(sEmptyRep);
mStart = 0;
mLength = 0;
}
DwString::DwString(const DwString& aStr, size_t aPos, size_t aLen)
{
assert(aPos <= aStr.mLength);
if (sEmptyRep == 0) {
sEmptyBuffer[0] = 0;
sEmptyRep = new DwStringRep(sEmptyBuffer, kEmptyBufferSize);
assert(sEmptyRep != 0);
}
DBG_STMT(aStr.CheckInvariants())
size_t pos = DW_MIN(aPos, aStr.mLength);
size_t len = DW_MIN(aLen, aStr.mLength - pos);
if (len > 0) {
mRep = new_rep_reference(aStr.mRep);
mStart = aStr.mStart + pos;
mLength = len;
}
else /* if (len == 0) */ {
mRep = new_rep_reference(sEmptyRep);
mStart = 0;
mLength = 0;
}
}
DwString::DwString(const char* aBuf, size_t aLen)
{
assert(aBuf != 0);
assert(aLen != (size_t)-1);
if (sEmptyRep == 0) {
sEmptyBuffer[0] = 0;
sEmptyRep = new DwStringRep(sEmptyBuffer, kEmptyBufferSize);
assert(sEmptyRep != 0);
}
DBG_STMT(sEmptyRep->CheckInvariants())
// Set valid values, in case an exception is thrown
mRep = new_rep_reference(sEmptyRep);
mStart = 0;
mLength = 0;
_replace(0, mLength, aBuf, aLen);
}
DwString::DwString(FILE* aFile , size_t aLen)
{
assert(aFile != 0);
assert(aLen != (size_t)-1);
if (sEmptyRep == 0) {
sEmptyBuffer[0] = 0;
sEmptyRep = new DwStringRep(sEmptyBuffer, kEmptyBufferSize);
assert(sEmptyRep != 0);
}
DBG_STMT(sEmptyRep->CheckInvariants())
// Set valid values, in case an exception is thrown
mRep = new DwStringRep(aFile, aLen);
mStart = 0;
mLength = aLen;
}
DwString::DwString(const char* aCstr)
{
if (sEmptyRep == 0) {
sEmptyBuffer[0] = 0;
sEmptyRep = new DwStringRep(sEmptyBuffer, kEmptyBufferSize);
assert(sEmptyRep != 0);
}
DBG_STMT(sEmptyRep->CheckInvariants())
// Set valid values, in case an exception is thrown
mRep = new_rep_reference(sEmptyRep);
mStart = 0;
mLength = 0;
if ( aCstr ) {
size_t len = strlen(aCstr);
_replace(0, mLength, aCstr, len);
}
}
DwString::DwString(size_t aLen, char aChar)
{
assert(aLen != (size_t)-1);
if (sEmptyRep == 0) {
sEmptyBuffer[0] = 0;
sEmptyRep = new DwStringRep(sEmptyBuffer, kEmptyBufferSize);
assert(sEmptyRep != 0);
}
DBG_STMT(sEmptyRep->CheckInvariants())
// Set valid values, in case an exception is thrown
mRep = new_rep_reference(sEmptyRep);
mStart = 0;
mLength = 0;
_replace(0, mLength, aLen, aChar);
}
DwString::DwString(char* aBuf, size_t aSize, size_t aStart, size_t aLen)
{
assert(aBuf != 0);
assert(aSize > 0);
assert(aLen < aSize);
assert(aStart < aSize - aLen);
if (sEmptyRep == 0) {
sEmptyBuffer[0] = 0;
sEmptyRep = new DwStringRep(sEmptyBuffer, kEmptyBufferSize);
assert(sEmptyRep != 0);
}
DBG_STMT(sEmptyRep->CheckInvariants())
// Set valid values, in case an exception is thrown
mRep = new_rep_reference(sEmptyRep);
mStart = 0;
mLength = 0;
DwStringRep* rep = new DwStringRep(aBuf, aSize);
assert(rep != 0);
if (rep != 0) {
mRep = rep;
mStart = aStart;
mLength = aLen;
}
else /* if (rep == 0) */ {
delete [] aBuf;
}
}
DwString::~DwString()
{
assert(mRep != 0);
delete_rep_safely(mRep);
DEV_STMT(mRep = 0)
}
size_t DwString::max_size() const
{
return ((size_t)-1) - 1;
}
void DwString::resize(size_t aLen, char aChar)
{
// making string shorter?
if (aLen < mLength) {
mLength = aLen;
if (mRep->mRefCount == 1) {
mRep->mBuffer[mStart + aLen] = 0;
}
}
// expanding string
else if (aLen > mLength) {
_replace(mLength, 0, aLen-mLength, aChar);
}
}
void DwString::resize(size_t aLen)
{
resize(aLen, 0);
}
void DwString::reserve(size_t aSize)
{
if (mRep->mRefCount == 1 && aSize < mRep->mSize && mRep != sEmptyRep) {
return;
}
size_t size = aSize + 1;
char* newBuf = mem_alloc(&size);
assert(newBuf != 0);
if (newBuf != 0) {
char* to = newBuf;
const char* from = mRep->mBuffer + mStart;
mem_copy(from, mLength, to);
to[mLength] = 0;
DwStringRep* rep= new DwStringRep(newBuf, size);
assert(rep != 0);
if (rep != 0) {
delete_rep_safely(mRep);
mRep = rep;
mStart = 0;
}
else {
mem_free(newBuf);
}
}
}
void DwString::clear()
{
assign("");
}
DwString& DwString::append(const DwString& aStr)
{
return append(aStr, 0, aStr.mLength);
}
DwString& DwString::append(const DwString& aStr, size_t aPos,
size_t aLen)
{
assert(aPos <= aStr.mLength);
size_t pos = DW_MIN(aPos, aStr.mLength);
size_t len = DW_MIN(aLen, aStr.mLength - pos);
if (&aStr == this) {
DwString temp(aStr);
_replace(mLength, 0, &temp.mRep->mBuffer[temp.mStart+pos], len);
}
else {
_replace(mLength, 0, &aStr.mRep->mBuffer[aStr.mStart+pos], len);
}
return *this;
}
DwString& DwString::append(const char* aBuf, size_t aLen)
{
assert(aBuf != 0);
if (aBuf != 0) {
_replace(mLength, 0, aBuf, aLen);
}
return *this;
}
DwString& DwString::append(const char* aCstr)
{
assert(aCstr != 0);
size_t len = (aCstr) ? strlen(aCstr) : 0;
_replace(mLength, 0, aCstr, len);
return *this;
}
DwString& DwString::append(size_t aLen, char aChar)
{
_replace(mLength, 0, aLen, aChar);
return *this;
}
DwString& DwString::assign(const DwString& aStr)
{
if (this != &aStr) {
assign(aStr, 0, aStr.mLength);
}
return *this;
}
DwString& DwString::assign(const DwString& aStr, size_t aPos, size_t aLen)
{
assert(aPos <= aStr.mLength);
size_t pos = DW_MIN(aPos, aStr.mLength);
size_t len = DW_MIN(aLen, aStr.mLength - pos);
if (mRep == aStr.mRep) {
mStart = aStr.mStart + pos;
mLength = len;
}
else {
delete_rep_safely(mRep);
mRep = new_rep_reference(aStr.mRep);
mStart = aStr.mStart + pos;
mLength = len;
}
return *this;
}
DwString& DwString::assign(const char* aBuf, size_t aLen)
{
assert(aBuf != 0);
assert(aLen != (size_t)-1);
_replace(0, mLength, aBuf, aLen);
return *this;
}
DwString& DwString::assign(const char* aCstr)
{
assert(aCstr != 0);
size_t len = (aCstr) ? strlen(aCstr) : 0;
_replace(0, mLength, aCstr, len);
return *this;
}
DwString& DwString::assign(size_t aLen, char aChar)
{
assert(aLen != (size_t)-1);
_replace(0, mLength, aLen, aChar);
return *this;
}
DwString& DwString::insert(size_t aPos, const DwString& aStr)
{
return insert(aPos, aStr, 0, aStr.mLength);
}
DwString& DwString::insert(size_t aPos1, const DwString& aStr,
size_t aPos2, size_t aLen2)
{
assert(aPos1 <= mLength);
assert(aPos2 <= aStr.mLength);
size_t pos2 = DW_MIN(aPos2, aStr.mLength);
size_t len2 = DW_MIN(aLen2, aStr.mLength - pos2);
if (&aStr == this) {
DwString temp(aStr);
_replace(aPos1, 0, &temp.mRep->mBuffer[temp.mStart+pos2], len2);
}
else {
_replace(aPos1, 0, &aStr.mRep->mBuffer[aStr.mStart+pos2], len2);
}
return *this;
}
DwString& DwString::insert(size_t aPos, const char* aBuf, size_t aLen)
{
assert(aBuf != 0);
_replace(aPos, 0, aBuf, aLen);
return *this;
}
DwString& DwString::insert(size_t aPos, const char* aCstr)
{
assert(aCstr != 0);
size_t len = (aCstr) ? strlen(aCstr) : 0;
_replace(aPos, 0, aCstr, len);
return *this;
}
DwString& DwString::insert(size_t aPos, size_t aLen, char aChar)
{
_replace(aPos, 0, aLen, aChar);
return *this;
}
DwString& DwString::erase(size_t aPos, size_t aLen)
{
assert(aPos <= mLength);
size_t pos = DW_MIN(aPos, mLength);
size_t len = DW_MIN(aLen, mLength - pos);
_replace(pos, len, "", 0);
return *this;
}
DwString& DwString::replace(size_t aPos1, size_t aLen1, const DwString& aStr)
{
return replace(aPos1, aLen1, aStr, 0, aStr.mLength);
}
DwString& DwString::replace(size_t aPos1, size_t aLen1, const DwString& aStr,
size_t aPos2, size_t aLen2)
{
assert(aPos2 <= aStr.mLength);
size_t pos2 = DW_MIN(aPos2, aStr.mLength);
size_t len2 = DW_MIN(aLen2, aStr.mLength - pos2);
if (&aStr == this) {
DwString temp(aStr);
_replace(aPos1, aLen1, &temp.mRep->mBuffer[temp.mStart+pos2], len2);
}
else {
_replace(aPos1, aLen1, &aStr.mRep->mBuffer[aStr.mStart+pos2], len2);
}
return *this;
}
DwString& DwString::replace(size_t aPos1, size_t aLen1, const char* aBuf,
size_t aLen2)
{
_replace(aPos1, aLen1, aBuf, aLen2);
return *this;
}
DwString& DwString::replace(size_t aPos1, size_t aLen1, const char* aCstr)
{
size_t len2 = (aCstr) ? strlen(aCstr) : 0;
_replace(aPos1, aLen1, aCstr, len2);
return *this;
}
DwString& DwString::replace(size_t aPos1, size_t aLen1, size_t aLen2,
char aChar)
{
_replace(aPos1, aLen1, aLen2, aChar);
return *this;
}
size_t DwString::copy(char* aBuf, size_t aLen, size_t aPos) const
{
assert(aPos <= mLength);
assert(aBuf != 0);
size_t pos = DW_MIN(aPos, mLength);
size_t len = DW_MIN(aLen, mLength - pos);
char* to = aBuf;
const char* from = mRep->mBuffer + mStart + pos;
mem_copy(from, len, to);
return len;
}
void DwString::swap(DwString& aStr)
{
DwStringRep* rep = mRep;
mRep = aStr.mRep;
aStr.mRep = rep;
size_t n = mStart;
mStart = aStr.mStart;
aStr.mStart = n;
n = mLength;
mLength = aStr.mLength;
aStr.mLength = n;
}
size_t DwString::find(const DwString& aStr, size_t aPos) const
{
return find(&aStr.mRep->mBuffer[aStr.mStart], aPos, aStr.mLength);
}
size_t DwString::find(const char* aBuf, size_t aPos, size_t aLen) const
{
assert(aBuf != 0);
if (aBuf == 0) return (size_t)-1;
if (aLen > mLength) return (size_t)-1;
if (aPos > mLength-aLen) return (size_t)-1;
if (aLen == 0) return aPos;
const char* buf = mRep->mBuffer + mStart;
for (size_t i=aPos; i <= mLength-aLen; ++i) {
size_t k = i;
size_t j = 0;
while (j < aLen && aBuf[j] == buf[k]) {
++j; ++k;
}
if (j == aLen) return i;
}
return (size_t)-1;
}
size_t DwString::find(const char* aCstr, size_t aPos) const
{
assert(aCstr != 0);
if (aCstr == 0) return (size_t)-1;
size_t len = strlen(aCstr);
return find(aCstr, aPos, len);
}
size_t DwString::find(char aChar, size_t aPos) const
{
if (aPos >= mLength) return (size_t)-1;
const char* buf = mRep->mBuffer + mStart;
for (size_t i=aPos; i < mLength; ++i) {
if (buf[i] == aChar) return i;
}
return (size_t)-1;
}
size_t DwString::rfind(const DwString& aStr, size_t aPos) const
{
return rfind(&aStr.mRep->mBuffer[aStr.mStart], aPos, aStr.mLength);
}
size_t DwString::rfind(const char* aBuf, size_t aPos, size_t aLen) const
{
assert(aBuf != 0);
if (aBuf == 0) return (size_t)-1;
if (aLen > mLength) return (size_t)-1;
size_t pos = DW_MIN(aPos, mLength - aLen);
if (aLen == 0) return pos;
const char* buf = mRep->mBuffer + mStart;
for (size_t i=0; i <= pos; ++i) {
size_t k = pos - i;
size_t j = 0;
while (j < aLen && aBuf[j] == buf[k]) {
++j; ++k;
}
if (j == aLen) return pos - i;
}
return (size_t)-1;
}
size_t DwString::rfind(const char* aCstr, size_t aPos) const
{
assert(aCstr != 0);
size_t len = (aCstr) ? strlen(aCstr) : 0;
return rfind(aCstr, aPos, len);
}
size_t DwString::rfind(char aChar, size_t aPos) const
{
size_t pos = DW_MIN(aPos, mLength - 1);
const char* buf = mRep->mBuffer + mStart;
for (size_t i=0; i <= pos; ++i) {
size_t k = pos - i;
if (buf[k] == aChar) return k;
}
return (size_t)-1;
}
size_t DwString::find_first_of(const DwString& aStr, size_t aPos) const
{
return find_first_of(&aStr.mRep->mBuffer[aStr.mStart], aPos, aStr.mLength);
}
size_t DwString::find_first_of(const char* aBuf, size_t aPos, size_t aLen) const
{
assert(aBuf != 0);
if (aBuf == 0) return (size_t)-1;
if (aPos >= mLength) return (size_t)-1;
if (aLen == 0) return aPos;
char table[256];
memset(table, 0, sizeof(table));
for (size_t j=0; j < aLen; ++j) {
table[aBuf[j]&0xff] = 1;
}
const char* buf = mRep->mBuffer + mStart;
for (size_t i=aPos; i < mLength; ++i) {
if (table[buf[i]&0xff]) return i;
}
return (size_t)-1;
}
size_t DwString::find_first_of(const char* aCstr, size_t aPos) const
{
assert(aCstr != 0);
if (aCstr == 0) return (size_t)-1;
size_t len = strlen(aCstr);
return find_first_of(aCstr, aPos, len);
}
size_t DwString::find_last_of(const DwString& aStr, size_t aPos) const
{
return find_last_of(&aStr.mRep->mBuffer[aStr.mStart], aPos, aStr.mLength);
}
size_t DwString::find_last_of(const char* aBuf, size_t aPos, size_t aLen) const
{
assert(aBuf != 0);
if (aBuf == 0) return (size_t)-1;
if (mLength == 0) return (size_t)-1;
size_t pos = DW_MIN(aPos, mLength - 1);
if (aLen == 0) return pos;
char table[256];
memset(table, 0, sizeof(table));
for (size_t j=0; j < aLen; ++j) {
table[aBuf[j]&0xff] = 1;
}
const char* buf = mRep->mBuffer + mStart;
for (size_t k=0; k <= pos; ++k) {
size_t i = pos - k;
if (table[buf[i]&0xff]) return i;
}
return (size_t)-1;
}
size_t DwString::find_last_of(const char* aCstr, size_t aPos) const
{
assert(aCstr != 0);
if (aCstr == 0) return (size_t)-1;
size_t len = strlen(aCstr);
return find_last_of(aCstr, aPos, len);
}
size_t DwString::find_first_not_of(const DwString& aStr, size_t aPos) const
{
return find_first_not_of(&aStr.mRep->mBuffer[aStr.mStart], aPos, aStr.mLength);
}
size_t DwString::find_first_not_of(const char* aBuf, size_t aPos, size_t aLen) const
{
assert(aBuf != 0);
if (aBuf == 0) return (size_t)-1;
if (aPos >= mLength) return (size_t)-1;
if (aLen == 0) return (size_t)-1;
char table[256];
memset(table, 1, sizeof(table));
for (size_t j=0; j < aLen; ++j) {
table[aBuf[j]&0xff] = 0;
}
const char* buf = mRep->mBuffer + mStart;
for (size_t i=aPos; i < mLength; ++i) {
if (table[buf[i]&0xff]) return i;
}
return (size_t)-1;
}
size_t DwString::find_first_not_of(const char* aCstr, size_t aPos) const
{
assert(aCstr != 0);
if (aCstr == 0) return (size_t)-1;
size_t len = strlen(aCstr);
return find_first_not_of(aCstr, aPos, len);
}
size_t DwString::find_last_not_of(const DwString& aStr, size_t aPos) const
{
return find_last_not_of(&aStr.mRep->mBuffer[aStr.mStart], aPos, aStr.mLength);
}
size_t DwString::find_last_not_of(const char* aBuf, size_t aPos, size_t aLen) const
{
assert(aBuf != 0);
if (aBuf == 0) return (size_t)-1;
if (mLength == 0) return (size_t)-1;
size_t pos = DW_MIN(aPos, mLength - 1);
if (aLen == 0) return (size_t)-1;
char table[256];
memset(table, 1, sizeof(table));
for (size_t j=0; j < aLen; ++j) {
table[aBuf[j]&0xff] = 0;
}
const char* buf = mRep->mBuffer + mStart;
for (size_t k=0; k <= pos; ++k) {
size_t i = pos - k;
if (table[buf[i]&0xff]) return i;
}
return (size_t)-1;
}
size_t DwString::find_last_not_of(const char* aCstr, size_t aPos) const
{
assert(aCstr != 0);
if (aCstr == 0) return (size_t)-1;
size_t len = strlen(aCstr);
return find_last_not_of(aCstr, aPos, len);
}
DwString DwString::substr(size_t aPos, size_t aLen) const
{
assert(aPos <= mLength);
size_t pos = DW_MIN(aPos, mLength);
size_t len = DW_MIN(aLen, mLength - pos);
return DwString(*this, pos, len);
}
int DwString::compare(const DwString& aStr) const
{
return compare(0, mLength, aStr, 0, aStr.mLength);
}
int DwString::compare(size_t aPos1, size_t aLen1, const DwString& aStr) const
{
return compare(aPos1, aLen1, aStr, 0, aStr.mLength);
}
int DwString::compare(size_t aPos1, size_t aLen1, const DwString& aStr,
size_t aPos2, size_t aLen2) const
{
assert(aPos1 <= mLength);
assert(aPos2 <= aStr.mLength);
size_t pos1 = DW_MIN(aPos1, mLength);
const char* buf1 = mRep->mBuffer + mStart + pos1;
size_t len1 = DW_MIN(aLen1, mLength - pos1);
size_t pos2 = DW_MIN(aPos2, aStr.mLength);
const char* buf2 = aStr.mRep->mBuffer + aStr.mStart + pos2;
size_t len2 = DW_MIN(aLen2, aStr.mLength - pos2);
size_t len = DW_MIN(len1, len2);
int r = strncmp(buf1, buf2, len);
if (r == 0) {
if (len1 < len2)
r = -1;
else if (len1 > len2) {
r = 1;
}
}
return r;
}
int DwString::compare(const char* aCstr) const
{
assert(aCstr != 0);
size_t len = (aCstr) ? strlen(aCstr) : 0;
return compare(0, mLength, aCstr, len);
}
int DwString::compare(size_t aPos1, size_t aLen1, const char* aBuf,
size_t aLen2) const
{
assert(aBuf != 0);
assert(aPos1 <= mLength);
if (aBuf == 0) {
return (aLen1 > 0) ? 1 : 0;
}
size_t pos1 = DW_MIN(aPos1, mLength);
const char* buf1 = mRep->mBuffer + mStart + pos1;
size_t len1 = DW_MIN(aLen1, mLength - pos1);
const char* buf2 = aBuf;
size_t len2 = aLen2;
size_t len = DW_MIN(len1, len2);
int r = strncmp(buf1, buf2, len);
if (r == 0) {
if (len1 < len2)
r = -1;
else if (len1 > len2) {
r = 1;
}
}
return r;
}
const char* DwString::ClassName() const
{
return "DwString";
}
int DwString::ObjectId() const
{
return (int) (long) this;
}
void DwString::ConvertToLowerCase()
{
if (mRep->mRefCount > 1) {
_copy();
}
char* buf = mRep->mBuffer + mStart;
for (size_t i=0; i < mLength; ++i) {
buf[i] = (char) dw_asciitolower(buf[i]);
}
}
void DwString::ConvertToUpperCase()
{
if (mRep->mRefCount > 1) {
_copy();
}
char* buf = mRep->mBuffer + mStart;
for (size_t i=0; i < mLength; ++i) {
buf[i] = (char) dw_asciitoupper(buf[i]);
}
}
void DwString::Trim()
{
const char* buf = mRep->mBuffer + mStart;
size_t i = 0;
while (mLength > 0) {
if (isspace(buf[i])) {
++mStart;
--mLength;
++i;
}
else {
break;
}
}
buf = mRep->mBuffer + mStart;
i = mLength - 1;
while (mLength > 0) {
if (isspace(buf[i])) {
--mLength;
--i;
}
else {
break;
}
}
if (mLength == 0) {
assign("");
}
}
void DwString::WriteTo(std::ostream& aStrm) const
{
const char* buf = mRep->mBuffer + mStart;
for (size_t i=0; i < mLength; ++i) {
aStrm << buf[i];
}
}
void DwString::TakeBuffer(char* aBuf, size_t aSize, size_t aStart, size_t aLen)
{
assert(aBuf != 0);
DwStringRep* rep = new DwStringRep(aBuf, aSize);
assert(rep != 0);
if (rep) {
delete_rep_safely(mRep);
mRep = rep;
mStart = aStart;
mLength = aLen;
}
}
void DwString::ReleaseBuffer(char** aBuf, size_t* aSize, size_t* aStart,
size_t* aLen)
{
assert(aBuf != 0);
assert(aSize != 0);
assert(aStart != 0);
assert(aLen != 0);
if (mRep->mRefCount == 1) {
*aBuf = mRep->mBuffer;
*aSize = mRep->mSize;
}
else {
size_t size = mRep->mSize;
char* buf = new char [size];
assert(buf != 0);
if (buf != 0) {
mem_copy(mRep->mBuffer, size, buf);
*aBuf = buf;
*aSize = size;
}
else {
// If not throwing an exception, recover as best we can
*aBuf = 0;
*aSize = 0;
*aStart = mStart = 0;
*aLen = mLength = 0;
return;
}
}
*aStart = mStart;
*aLen = mLength;
mRep = new_rep_reference(sEmptyRep);
mStart = 0;
mLength = 0;
}
void DwString::CopyTo(DwString* aStr) const
{
assert(aStr != 0);
if (!aStr) return;
size_t len = mLength;
size_t size = len + 1;
char* buf = mem_alloc(&size);
assert(buf != 0);
if (buf != 0) {
mem_copy(mRep->mBuffer+mStart, len, buf);
buf[len] = 0;
DwStringRep* rep = new DwStringRep(buf, size);
assert(rep != 0);
if (rep != 0) {
aStr->mRep = rep;
delete_rep_safely(aStr->mRep);
aStr->mStart = 0;
aStr->mLength = len;
}
}
}
void DwString::_copy()
{
if (mRep->mRefCount > 1) {
size_t size = mLength + 1;
char* newBuf = mem_alloc(&size);
assert(newBuf != 0);
if (newBuf != 0) {
char* to = newBuf;
const char* from = mRep->mBuffer + mStart;
mem_copy(from, mLength, to);
to[mLength] = 0;
DwStringRep* rep = new DwStringRep(newBuf, size);
assert(rep != 0);
if (rep != 0) {
delete_rep_safely(mRep);
mRep = rep;
mStart = 0;
}
else /* if (rep == 0) */ {
mem_free(newBuf);
mLength = 0;
}
}
else /* if (newBuf == 0) */ {
mLength = 0;
}
}
}
void DwString::_replace(size_t aPos1, size_t aLen1, const char* aBuf, size_t aLen2)
{
assert(aPos1 <= mLength);
assert(aBuf != 0);
size_t pos1 = DW_MIN(aPos1, mLength);
size_t len1 = DW_MIN(aLen1, mLength - pos1);
assert(mStart + mLength - len1 < ((size_t)-1) - aLen2);
size_t len2 = DW_MIN(aLen2, ((size_t)-1) - (mStart + mLength - len1));
size_t i;
char* to;
const char* from;
size_t newLen = (mLength - len1) + len2;
// Is new string empty?
if (newLen == 0 || aBuf == 0) {
if (mRep != sEmptyRep) {
delete_rep_safely(mRep);
mRep = new_rep_reference(sEmptyRep);
mStart = 0;
mLength = 0;
}
}
// Is buffer shared? Is buffer too small?
else if (mRep->mRefCount > 1 || newLen >= mRep->mSize) {
size_t size = newLen + 1;
char* newBuf = mem_alloc(&size);
assert(newBuf != 0);
if (newBuf != 0) {
to = newBuf;
memcpy(to, mRep->mBuffer + mStart, pos1);
to += pos1;
memcpy(to, aBuf, len2);
to += len2;
memcpy(to, mRep->mBuffer + mStart + pos1 + len1, mLength - pos1 - len1);
to += mLength - pos1 - len1;
*to = 0;
DwStringRep* rep = new DwStringRep(newBuf, size);
assert(rep != 0);
if (rep != 0) {
delete_rep_safely(mRep);
mRep = rep;
mStart = 0;
mLength = newLen;
}
}
}
// Is the replacement smaller than the replaced?
else if (len2 < len1) {
to = mRep->mBuffer + mStart + pos1;
from = aBuf;
for (i=0; i < len2; ++i) *to++ = *from++;
from = mRep->mBuffer + mStart + pos1 + len1;
for (i=0; i < mLength - pos1 - len1; ++i) *to++ = *from++;
*to = 0;
mLength = newLen;
}
// Is there enough room at end of buffer?
else if (mStart + newLen < mRep->mSize) {
to = mRep->mBuffer + mStart + newLen;
from = mRep->mBuffer + mStart + mLength - 1;
*to-- = 0;
for (i=0; i < mLength-pos1-len1; ++i) *to-- = *from--;
from = aBuf + (len2 - 1);
for (i=0; i < len2; ++i) *to-- = *from--;
mLength = newLen;
}
// Is there enough room at beginning of buffer?
else if (len2 - len1 <= mStart) {
to = mRep->mBuffer + mStart - (len2 - len1);
from = mRep->mBuffer + mStart;
for (i=0; i < pos1; ++i) *to++ = *from++;
from = aBuf;
for (i=0; i < len2; ++i) *to++ = *from++;
mStart -= len2 - len1;
mLength = newLen;
}
// There's enough room, but we must move characters.
else {
to = mRep->mBuffer + newLen;
from = mRep->mBuffer + mStart + mLength - 1;
*to-- = 0;
for (i=0; i < mLength-pos1-len1; ++i) *to-- = *from--;
to = mRep->mBuffer;
from = mRep->mBuffer + mStart;
for (i=0; i < pos1; ++i) *to++ = *from++;
from = aBuf;
for (i=0; i < len2; ++i) *to++ = *from++;
mStart = 0;
mLength = newLen;
}
}
void DwString::_replace(size_t aPos1, size_t aLen1, size_t aLen2, char aChar)
{
assert(aPos1 <= mLength);
size_t pos1 = DW_MIN(aPos1, mLength);
size_t len1 = DW_MIN(aLen1, mLength - pos1);
assert(mStart + mLength - len1 < ((size_t)-1) - aLen2);
size_t len2 = DW_MIN(aLen2, ((size_t)-1) - (mStart + mLength - len1));
size_t i;
char* to;
const char* from;
size_t newLen = mLength - len1 + len2;
// Is new string empty?
if (newLen == 0) {
if (mRep != sEmptyRep) {
delete_rep_safely(mRep);
mRep = new_rep_reference(sEmptyRep);
mStart = 0;
mLength = 0;
}
}
// Is buffer shared? Is buffer too small?
else if (mRep->mRefCount > 1 || newLen >= mRep->mSize) {
size_t size = newLen + 1;
char* newBuf = mem_alloc(&size);
assert(newBuf != 0);
if (newBuf != 0) {
to = newBuf;
from = mRep->mBuffer + mStart;
for (i=0; i < pos1; ++i) *to++ = *from++;
for (i=0; i < len2; ++i) *to++ = aChar;
from = mRep->mBuffer + mStart + pos1 + len1;
for (i=0; i < mLength - pos1 - len1; ++i) *to++ = *from++;
*to = 0;
DwStringRep* rep = new DwStringRep(newBuf, size);
assert(rep != 0);
if (rep != 0) {
delete_rep_safely(mRep);
mRep = rep;
mStart = 0;
mLength = newLen;
}
}
}
// Is the replacement smaller than the replaced?
else if (len2 < len1) {
to = mRep->mBuffer + mStart + pos1;
for (i=0; i < len2; ++i) *to++ = aChar;
from = mRep->mBuffer + mStart + pos1 + len1;
for (i=0; i < mLength - pos1 - len1; ++i) *to++ = *from++;
*to = 0;
mLength = newLen;
}
// Is there enough room at end of buffer?
else if (mStart + newLen < mRep->mSize) {
to = mRep->mBuffer + mStart + newLen;
from = mRep->mBuffer + mStart + mLength - 1;
*to-- = 0;
for (i=0; i < mLength-pos1-len1; ++i) *to-- = *from--;
for (i=0; i < len2; ++i) *to-- = aChar;
mLength = newLen;
}
// Is there enough room at beginning of buffer?
else if (len2 - len1 <= mStart) {
to = mRep->mBuffer + mStart - (len2 - len1);
from = mRep->mBuffer + mStart;
for (i=0; i < pos1; ++i) *to++ = *from++;
for (i=0; i < len2; ++i) *to++ = aChar;
mStart -= len2 - len1;
mLength = newLen;
}
// There's enough room, but we must move characters.
else {
to = mRep->mBuffer + newLen;
from = mRep->mBuffer + mStart + mLength - 1;
*to-- = 0;
for (i=0; i < mLength-pos1-len1; ++i) *to-- = *from--;
to = mRep->mBuffer;
from = mRep->mBuffer + mStart;
for (i=0; i < pos1; ++i) *to++ = *from++;
for (i=0; i < len2; ++i) *to++ = aChar;
mStart = 0;
mLength = newLen;
}
}
#if defined (DW_DEBUG_VERSION)
void DwString::PrintDebugInfo(std::ostream& aStrm) const
{
aStrm <<
"----------------- Debug info for DwString class ----------------\n";
aStrm << "Id: " << ClassName() << ", " << ObjectId() << "\n";
aStrm << "Rep: " << (void*) mRep << "\n";
aStrm << "Buffer: " << (void*) mRep->mBuffer << "\n";
aStrm << "Buffer size: " << mRep->mSize << "\n";
aStrm << "Start: " << mStart << "\n";
aStrm << "Length: " << mLength << "\n";
aStrm << "Contents: ";
for (size_t i=0; i < mLength && i < 64; ++i) {
aStrm << mRep->mBuffer[mStart+i];
}
aStrm << std::endl;
}
#else
void DwString::PrintDebugInfo(std::ostream& ) const {}
#endif // defined (DW_DEBUG_VERSION)
void DwString::CheckInvariants() const
{
#if defined (DW_DEBUG_VERSION)
assert(mRep != 0);
mRep->CheckInvariants();
#endif // defined (DW_DEBUG_VERSION)
}
DwString operator + (const DwString& aStr1, const DwString& aStr2)
{
DwString str(aStr1);
str.append(aStr2);
return str;
}
DwString operator + (const char* aCstr, const DwString& aStr2)
{
DwString str(aCstr);
str.append(aStr2);
return str;
}
DwString operator + (char aChar, const DwString& aStr2)
{
DwString str(1, aChar);
str.append(aStr2);
return str;
}
DwString operator + (const DwString& aStr1, const char* aCstr)
{
DwString str(aStr1);
str.append(aCstr);
return str;
}
DwString operator + (const DwString& aStr1, char aChar)
{
DwString str(aStr1);
str.append(1, aChar);
return str;
}
DwBool operator == (const DwString& aStr1, const DwString& aStr2)
{
const char* s1 = aStr1.data();
size_t len1 = aStr1.length();
const char* s2 = aStr2.data();
size_t len2 = aStr2.length();
int r = dw_strcmp(s1, len1, s2, len2);
r = (r == 0) ? 1 : 0;
return r;
}
DwBool operator == (const DwString& aStr1, const char* aCstr)
{
assert(aCstr != 0);
const char* s1 = aStr1.data();
size_t len1 = aStr1.length();
const char* s2 = aCstr;
size_t len2 = (aCstr) ? strlen(aCstr) : 0;
int r = dw_strcmp(s1, len1, s2, len2);
r = (r == 0) ? 1 : 0;
return r;
}
DwBool operator == (const char* aCstr, const DwString& aStr2)
{
assert(aCstr != 0);
const char* s1 = aCstr;
size_t len1 = (aCstr) ? strlen(aCstr) : 0;
const char* s2 = aStr2.data();
size_t len2 = aStr2.length();
int r = dw_strcmp(s1, len1, s2, len2);
r = (r == 0) ? 1 : 0;
return r;
}
DwBool operator != (const DwString& aStr1, const DwString& aStr2)
{
const char* s1 = aStr1.data();
size_t len1 = aStr1.length();
const char* s2 = aStr2.data();
size_t len2 = aStr2.length();
int r = dw_strcmp(s1, len1, s2, len2);
r = (r == 0) ? 0 : 1;
return r;
}
DwBool operator != (const DwString& aStr1, const char* aCstr)
{
assert(aCstr != 0);
const char* s1 = aStr1.data();
size_t len1 = aStr1.length();
const char* s2 = aCstr;
size_t len2 = (aCstr) ? strlen(aCstr) : 0;
int r = dw_strcmp(s1, len1, s2, len2);
r = (r == 0) ? 0 : 1;
return r;
}
DwBool operator != (const char* aCstr, const DwString& aStr2)
{
assert(aCstr != 0);
const char* s1 = aCstr;
size_t len1 = (aCstr) ? strlen(aCstr) : 0;
const char* s2 = aStr2.data();
size_t len2 = aStr2.length();
int r = dw_strcmp(s1, len1, s2, len2);
r = (r == 0) ? 0 : 1;
return r;
}
DwBool operator < (const DwString& aStr1, const DwString& aStr2)
{
const char* s1 = aStr1.data();
size_t len1 = aStr1.length();
const char* s2 = aStr2.data();
size_t len2 = aStr2.length();
int r = dw_strcmp(s1, len1, s2, len2);
r = (r < 0) ? 1 : 0;
return r;
}
DwBool operator < (const DwString& aStr1, const char* aCstr)
{
assert(aCstr != 0);
const char* s1 = aStr1.data();
size_t len1 = aStr1.length();
const char* s2 = aCstr;
size_t len2 = (aCstr) ? strlen(aCstr) : 0;
int r = dw_strcmp(s1, len1, s2, len2);
r = (r < 0) ? 1 : 0;
return r;
}
DwBool operator < (const char* aCstr, const DwString& aStr2)
{
assert(aCstr != 0);
const char* s1 = aCstr;
size_t len1 = (aCstr) ? strlen(aCstr) : 0;
const char* s2 = aStr2.data();
size_t len2 = aStr2.length();
int r = dw_strcmp(s1, len1, s2, len2);
r = (r < 0) ? 1 : 0;
return r;
}
DwBool operator > (const DwString& aStr1, const DwString& aStr2)
{
const char* s1 = aStr1.data();
size_t len1 = aStr1.length();
const char* s2 = aStr2.data();
size_t len2 = aStr2.length();
int r = dw_strcmp(s1, len1, s2, len2);
r = (r > 0) ? 1 : 0;
return r;
}
DwBool operator > (const DwString& aStr1, const char* aCstr)
{
assert(aCstr != 0);
const char* s1 = aStr1.data();
size_t len1 = aStr1.length();
const char* s2 = aCstr;
size_t len2 = (aCstr) ? strlen(aCstr) : 0;
int r = dw_strcmp(s1, len1, s2, len2);
r = (r > 0) ? 1 : 0;
return r;
}
DwBool operator > (const char* aCstr, const DwString& aStr2)
{
assert(aCstr != 0);
const char* s1 = aCstr;
size_t len1 = (aCstr) ? strlen(aCstr) : 0;
const char* s2 = aStr2.data();
size_t len2 = aStr2.length();
int r = dw_strcmp(s1, len1, s2, len2);
r = (r > 0) ? 1 : 0;
return r;
}
DwBool operator <= (const DwString& aStr1, const DwString& aStr2)
{
const char* s1 = aStr1.data();
size_t len1 = aStr1.length();
const char* s2 = aStr2.data();
size_t len2 = aStr2.length();
int r = dw_strcmp(s1, len1, s2, len2);
r = (r <= 0) ? 1 : 0;
return r;
}
DwBool operator <= (const DwString& aStr1, const char* aCstr)
{
assert(aCstr != 0);
const char* s1 = aStr1.data();
size_t len1 = aStr1.length();
const char* s2 = aCstr;
size_t len2 = (aCstr) ? strlen(aCstr) : 0;
int r = dw_strcmp(s1, len1, s2, len2);
r = (r <= 0) ? 1 : 0;
return r;
}
DwBool operator <= (const char* aCstr, const DwString& aStr2)
{
assert(aCstr != 0);
const char* s1 = aCstr;
size_t len1 = (aCstr) ? strlen(aCstr) : 0;
const char* s2 = aStr2.data();
size_t len2 = aStr2.length();
int r = dw_strcmp(s1, len1, s2, len2);
r = (r <= 0) ? 1 : 0;
return r;
}
DwBool operator >= (const DwString& aStr1, const DwString& aStr2)
{
const char* s1 = aStr1.data();
size_t len1 = aStr1.length();
const char* s2 = aStr2.data();
size_t len2 = aStr2.length();
int r = dw_strcmp(s1, len1, s2, len2);
r = (r >= 0) ? 1 : 0;
return r;
}
DwBool operator >= (const DwString& aStr1, const char* aCstr)
{
assert(aCstr != 0);
const char* s1 = aStr1.data();
size_t len1 = aStr1.length();
const char* s2 = aCstr;
size_t len2 = (aCstr) ? strlen(aCstr) : 0;
int r = dw_strcmp(s1, len1, s2, len2);
r = (r >= 0) ? 1 : 0;
return r;
}
DwBool operator >= (const char* aCstr, const DwString& aStr2)
{
assert(aCstr != 0);
const char* s1 = aCstr;
size_t len1 = (aCstr) ? strlen(aCstr) : 0;
const char* s2 = aStr2.data();
size_t len2 = aStr2.length();
int r = dw_strcmp(s1, len1, s2, len2);
r = (r >= 0) ? 1 : 0;
return r;
}
std::ostream& operator << (std::ostream& aOstrm, const DwString& aStr)
{
const char* buf = aStr.data();
for (size_t i=0; i < aStr.length(); ++i) {
aOstrm << buf[i];
}
return aOstrm;
}
std::istream& getline(std::istream& aIstrm, DwString& aStr, char aDelim)
{
aStr.clear();
char ch;
while (aIstrm.get(ch)) {
if (ch == aDelim) break;
if (aStr.length() < aStr.max_size()) {
aStr.append(1, ch);
}
}
return aIstrm;
}
std::istream& getline(std::istream& aIstrm, DwString& aStr)
{
return getline(aIstrm, aStr, '\n');
}
#endif // !defined(DW_USE_ANSI_STRING)
int DwStrcasecmp(const DwString& aStr1, const DwString& aStr2)
{
const char* s1 = aStr1.data();
size_t len1 = aStr1.length();
const char* s2 = aStr2.data();
size_t len2 = aStr2.length();
return dw_strasciicasecmp(s1, len1, s2, len2);
}
int DwStrcasecmp(const DwString& aStr, const char* aCstr)
{
assert(aCstr != 0);
const char* s1 = aStr.data();
size_t len1 = aStr.length();
const char* s2 = aCstr;
size_t len2 = (aCstr) ? strlen(aCstr) : 0;
return dw_strasciicasecmp(s1, len1, s2, len2);
}
int DwStrcasecmp(const char* aCstr, const DwString& aStr)
{
assert(aCstr != 0);
const char* s1 = aCstr;
size_t len1 = (aCstr) ? strlen(aCstr) : 0;
const char* s2 = aStr.data();
size_t len2 = aStr.length();
return dw_strasciicasecmp(s1, len1, s2, len2);
}
int DwStrncasecmp(const DwString& aStr1, const DwString& aStr2, size_t n)
{
const char* s1 = aStr1.data();
size_t len1 = aStr1.length();
len1 = DW_MIN(len1, n);
const char* s2 = aStr2.data();
size_t len2 = aStr2.length();
len2 = DW_MIN(len2, n);
return dw_strasciicasecmp(s1, len1, s2, len2);
}
int DwStrncasecmp(const DwString& aStr, const char* aCstr, size_t n)
{
assert(aCstr != 0);
const char* s1 = aStr.data();
size_t len1 = aStr.length();
len1 = DW_MIN(len1, n);
const char* s2 = aCstr;
size_t len2 = (aCstr) ? strlen(aCstr) : 0;
len2 = DW_MIN(len2, n);
return dw_strasciicasecmp(s1, len1, s2, len2);
}
int DwStrncasecmp(const char* aCstr, const DwString& aStr, size_t n)
{
assert(aCstr != 0);
const char* s1 = aCstr;
size_t len1 = (aCstr) ? strlen(aCstr) : 0;
len1 = DW_MIN(len1, n);
const char* s2 = aStr.data();
size_t len2 = aStr.length();
len2 = DW_MIN(len2, n);
return dw_strasciicasecmp(s1, len1, s2, len2);
}
int DwStrcmp(const DwString& aStr1, const DwString& aStr2)
{
const char* s1 = aStr1.data();
size_t len1 = aStr1.length();
const char* s2 = aStr2.data();
size_t len2 = aStr2.length();
return dw_strcmp(s1, len1, s2, len2);
}
int DwStrcmp(const DwString& aStr, const char* aCstr)
{
assert(aCstr != 0);
const char* s1 = aStr.data();
size_t len1 = aStr.length();
const char* s2 = aCstr;
size_t len2 = (aCstr) ? strlen(aCstr) : 0;
return dw_strcmp(s1, len1, s2, len2);
}
int DwStrcmp(const char* aCstr, const DwString& aStr)
{
assert(aCstr != 0);
const char* s1 = aCstr;
size_t len1 = (aCstr) ? strlen(aCstr) : 0;
const char* s2 = aStr.data();
size_t len2 = aStr.length();
return dw_strcmp(s1, len1, s2, len2);
}
int DwStrncmp(const DwString& aStr1, const DwString& aStr2, size_t n)
{
const char* s1 = aStr1.data();
size_t len1 = aStr1.length();
len1 = DW_MIN(len1, n);
const char* s2 = aStr2.data();
size_t len2 = aStr2.length();
len2 = DW_MIN(len2, n);
return dw_strcmp(s1, len1, s2, len2);
}
int DwStrncmp(const DwString& aStr, const char* aCstr, size_t n)
{
assert(aCstr != 0);
const char* s1 = aStr.data();
size_t len1 = aStr.length();
len1 = DW_MIN(len1, n);
const char* s2 = aCstr;
size_t len2 = (aCstr) ? strlen(aCstr) : 0;
len2 = DW_MIN(len2, n);
return dw_strcmp(s1, len1, s2, len2);
}
int DwStrncmp(const char* aCstr, const DwString& aStr, size_t n)
{
assert(aCstr != 0);
const char* s1 = aCstr;
size_t len1 = (aCstr) ? strlen(aCstr) : 0;
len1 = DW_MIN(len1, n);
const char* s2 = aStr.data();
size_t len2 = aStr.length();
len2 = DW_MIN(len2, n);
return dw_strcmp(s1, len1, s2, len2);
}
void DwStrcpy(DwString& aStrDest, const DwString& aStrSrc)
{
aStrDest.assign(aStrSrc);
}
void DwStrcpy(DwString& aStrDest, const char* aCstrSrc)
{
aStrDest.assign(aCstrSrc);
}
void DwStrcpy(char* aCstrDest, const DwString& aStrSrc)
{
assert(aCstrDest != 0);
const char* buf = aStrSrc.data();
size_t len = aStrSrc.length();
mem_copy(buf, len, aCstrDest);
aCstrDest[len] = 0;
}
void DwStrncpy(DwString& aStrDest, const DwString& aStrSrc, size_t n)
{
aStrDest.assign(aStrSrc, 0, n);
}
void DwStrncpy(DwString& aStrDest, const char* aCstrSrc, size_t n)
{
aStrDest.assign(aCstrSrc, 0, n);
}
void DwStrncpy(char* aCstrDest, const DwString& aStrSrc, size_t n)
{
assert(aCstrDest != 0);
const char* buf = aStrSrc.data();
size_t len = aStrSrc.length();
len = DW_MIN(len, n);
mem_copy(buf, len, aCstrDest);
for (size_t i=len; i < n; ++i) {
aCstrDest[i] = 0;
}
}
char* DwStrdup(const DwString& aStr)
{
size_t len = aStr.length();
char* buf = new char[len+1];
assert(buf != 0);
if (buf != 0) {
DwStrncpy(buf, aStr, len);
buf[len] = 0;
}
return buf;
}
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