/////////////////////////////////////////////////////////////////////////////
#ifdef __GNUG__
-#pragma implementation "string.h"
+ #pragma implementation "string.h"
#endif
/*
#include "wx/wxprec.h"
#ifdef __BORLANDC__
-#pragma hdrstop
+ #pragma hdrstop
#endif
#ifndef WX_PRECOMP
-#include "wx/defs.h"
-#include "wx/string.h"
-#include <wx/intl.h>
+ #include "wx/defs.h"
+ #include "wx/string.h"
+ #include "wx/intl.h"
#endif
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
+#ifdef __SALFORDC__
+ #include <clib.h>
+#endif
+
+#if wxUSE_WCSRTOMBS
+ #include <wchar.h> // for wcsrtombs(), see comments where it's used
+#endif // GNU
+
#ifdef WXSTRING_IS_WXOBJECT
IMPLEMENT_DYNAMIC_CLASS(wxString, wxObject)
#endif //WXSTRING_IS_WXOBJECT
// static class variables definition
// ---------------------------------------------------------------------------
-#ifdef STD_STRING_COMPATIBILITY
- const size_t wxString::npos = STRING_MAXLEN;
-#endif
+#ifdef wxSTD_STRING_COMPATIBILITY
+ const size_t wxString::npos = wxSTRING_MAXLEN;
+#endif // wxSTD_STRING_COMPATIBILITY
// ----------------------------------------------------------------------------
// static data
// ----------------------------------------------------------------------------
-// for an empty string, GetStringData() will return this address
-static int g_strEmpty[] = { -1, // ref count (locked)
- 0, // current length
- 0, // allocated memory
- 0 }; // string data
+// for an empty string, GetStringData() will return this address: this
+// structure has the same layout as wxStringData and it's data() method will
+// return the empty string (dummy pointer)
+static const struct
+{
+ wxStringData data;
+ char dummy;
+} g_strEmpty = { {-1, 0, 0}, '\0' };
+
// empty C style string: points to 'string data' byte of g_strEmpty
-extern const char *g_szNul = (const char *)(&g_strEmpty[3]);
+extern const char WXDLLEXPORT *g_szNul = &g_strEmpty.dummy;
+
+// ----------------------------------------------------------------------------
+// conditional compilation
+// ----------------------------------------------------------------------------
+
+// we want to find out if the current platform supports vsnprintf()-like
+// function: for Unix this is done with configure, for Windows we test the
+// compiler explicitly.
+#ifdef __WXMSW__
+ #ifdef __VISUALC__
+ #define wxVsprintf _vsnprintf
+ #endif
+#else // !Windows
+ #ifdef HAVE_VSNPRINTF
+ #define wxVsprintf vsnprintf
+ #endif
+#endif // Windows/!Windows
+
+#ifndef wxVsprintf
+ // in this case we'll use vsprintf() (which is ANSI and thus should be
+ // always available), but it's unsafe because it doesn't check for buffer
+ // size - so give a warning
+ #define wxVsprintf(buffer,len,format,argptr) vsprintf(buffer,format, argptr)
+
+ #if defined(__VISUALC__)
+ #pragma message("Using sprintf() because no snprintf()-like function defined")
+ #elif defined(__GNUG__) && !defined(__UNIX__)
+ #warning "Using sprintf() because no snprintf()-like function defined"
+ #elif defined(__MWERKS__)
+ #warning "Using sprintf() because no snprintf()-like function defined"
+ #endif //compiler
+#endif // no vsnprintf
+
+#ifdef _AIX
+ // AIX has vsnprintf, but there's no prototype in the system headers.
+ extern "C" int vsnprintf(char* str, size_t n, const char* format, va_list ap);
+#endif
// ----------------------------------------------------------------------------
// global functions
// ----------------------------------------------------------------------------
-#ifdef STD_STRING_COMPATIBILITY
+#ifdef wxSTD_STRING_COMPATIBILITY
// MS Visual C++ version 5.0 provides the new STL headers as well as the old
// iostream ones.
//
// ATTN: you can _not_ use both of these in the same program!
-#if 0 // def _MSC_VER
- #include <iostream>
- #define NAMESPACE std::
-#else
- #include <iostream.h>
- #define NAMESPACE
-#endif //Visual C++
-NAMESPACE istream& operator>>(NAMESPACE istream& is, wxString& WXUNUSED(str))
+istream& operator>>(istream& is, wxString& WXUNUSED(str))
{
#if 0
int w = is.width(0);
if ( is.ipfx(0) ) {
- NAMESPACE streambuf *sb = is.rdbuf();
+ streambuf *sb = is.rdbuf();
str.erase();
while ( true ) {
int ch = sb->sbumpc ();
if ( ch == EOF ) {
- is.setstate(NAMESPACE ios::eofbit);
+ is.setstate(ios::eofbit);
break;
}
else if ( isspace(ch) ) {
is.isfx();
if ( str.length() == 0 )
- is.setstate(NAMESPACE ios::failbit);
+ is.setstate(ios::failbit);
#endif
return is;
}
{
public:
Averager(const char *sz) { m_sz = sz; m_nTotal = m_nCount = 0; }
- ~Averager()
+ ~Averager()
{ printf("wxString: average %s = %f\n", m_sz, ((float)m_nTotal)/m_nCount); }
void Add(size_t n) { m_nTotal += n; m_nCount++; }
wxASSERT( nPos <= Strlen(psz) );
- if ( nLength == STRING_MAXLEN )
+ if ( nLength == wxSTRING_MAXLEN )
nLength = Strlen(psz + nPos);
STATISTICS_ADD(InitialLength, nLength);
InitWith((const char *)psz, 0, nLength);
}
-#ifdef STD_STRING_COMPATIBILITY
+#ifdef wxSTD_STRING_COMPATIBILITY
// poor man's iterators are "void *" pointers
wxString::wxString(const void *pStart, const void *pEnd)
wxString::wxString(const wchar_t *pwz)
{
// first get necessary size
- size_t nLen = wcstombs(NULL, pwz, 0);
+
+ // NB: GNU libc5 wcstombs() is completely broken, don't use it (it doesn't
+ // honor the 3rd parameter, thus it will happily crash here).
+#if wxUSE_WCSRTOMBS
+ // don't know if it's really needed (or if we can pass NULL), but better safe
+ // than quick
+ mbstate_t mbstate;
+ size_t nLen = wcsrtombs((char *) NULL, &pwz, 0, &mbstate);
+#else // !GNU libc
+ size_t nLen = wcstombs((char *) NULL, pwz, 0);
+#endif // GNU
// empty?
if ( nLen != 0 ) {
pData->Unlock();
AllocBuffer(nLen);
}
+ else {
+ // update the string length
+ pData->nDataLength = nLen;
+ }
wxASSERT( !GetStringData()->IsShared() ); // we must be the only owner
}
{
STATISTICS_ADD(SummandLength, nSrcLen);
- // concatenating an empty string is a NOP, but it happens quite rarely,
- // so we don't waste our time checking for it
- // if ( nSrcLen > 0 )
- wxStringData *pData = GetStringData();
- size_t nLen = pData->nDataLength;
- size_t nNewLen = nLen + nSrcLen;
+ // concatenating an empty string is a NOP
+ if ( nSrcLen > 0 ) {
+ wxStringData *pData = GetStringData();
+ size_t nLen = pData->nDataLength;
+ size_t nNewLen = nLen + nSrcLen;
- // alloc new buffer if current is too small
- if ( pData->IsShared() ) {
- STATISTICS_ADD(ConcatHit, 0);
+ // alloc new buffer if current is too small
+ if ( pData->IsShared() ) {
+ STATISTICS_ADD(ConcatHit, 0);
- // we have to allocate another buffer
- wxStringData* pOldData = GetStringData();
- AllocBuffer(nNewLen);
- memcpy(m_pchData, pOldData->data(), nLen*sizeof(char));
- pOldData->Unlock();
- }
- else if ( nNewLen > pData->nAllocLength ) {
- STATISTICS_ADD(ConcatHit, 0);
+ // we have to allocate another buffer
+ wxStringData* pOldData = GetStringData();
+ AllocBuffer(nNewLen);
+ memcpy(m_pchData, pOldData->data(), nLen*sizeof(char));
+ pOldData->Unlock();
+ }
+ else if ( nNewLen > pData->nAllocLength ) {
+ STATISTICS_ADD(ConcatHit, 0);
- // we have to grow the buffer
- Alloc(nNewLen);
- }
- else {
- STATISTICS_ADD(ConcatHit, 1);
+ // we have to grow the buffer
+ Alloc(nNewLen);
+ }
+ else {
+ STATISTICS_ADD(ConcatHit, 1);
- // the buffer is already big enough
- }
+ // the buffer is already big enough
+ }
- // should be enough space
- wxASSERT( nNewLen <= GetStringData()->nAllocLength );
+ // should be enough space
+ wxASSERT( nNewLen <= GetStringData()->nAllocLength );
- // fast concatenation - all is done in our buffer
- memcpy(m_pchData + nLen, pszSrcData, nSrcLen*sizeof(char));
+ // fast concatenation - all is done in our buffer
+ memcpy(m_pchData + nLen, pszSrcData, nSrcLen*sizeof(char));
- m_pchData[nNewLen] = '\0'; // put terminating '\0'
- GetStringData()->nDataLength = nNewLen; // and fix the length
+ m_pchData[nNewLen] = '\0'; // put terminating '\0'
+ GetStringData()->nDataLength = nNewLen; // and fix the length
+ }
+ //else: the string to append was empty
}
/*
}
// extract string of length nCount starting at nFirst
-// default value of nCount is 0 and means "till the end"
wxString wxString::Mid(size_t nFirst, size_t nCount) const
{
+ wxStringData *pData = GetStringData();
+ size_t nLen = pData->nDataLength;
+
+ // default value of nCount is wxSTRING_MAXLEN and means "till the end"
+ if ( nCount == wxSTRING_MAXLEN )
+ {
+ nCount = nLen - nFirst;
+ }
+
// out-of-bounds requests return sensible things
- if ( nCount == 0 )
- nCount = GetStringData()->nDataLength - nFirst;
+ if ( nFirst + nCount > nLen )
+ {
+ nCount = nLen - nFirst;
+ }
- if ( nFirst + nCount > (size_t)GetStringData()->nDataLength )
- nCount = GetStringData()->nDataLength - nFirst;
- if ( nFirst > (size_t)GetStringData()->nDataLength )
+ if ( nFirst > nLen )
+ {
+ // AllocCopy() will return empty string
nCount = 0;
+ }
wxString dest;
AllocCopy(dest, nCount, nFirst);
+
return dest;
}
// get all characters after the last occurence of ch
// (returns the whole string if ch not found)
-wxString wxString::Right(char ch) const
+wxString wxString::AfterLast(char ch) const
{
wxString str;
int iPos = Find(ch, TRUE);
- if ( iPos == NOT_FOUND )
+ if ( iPos == wxNOT_FOUND )
str = *this;
else
str = c_str() + iPos + 1;
// get all characters before the first occurence of ch
// (returns the whole string if ch not found)
-wxString wxString::Left(char ch) const
+wxString wxString::BeforeFirst(char ch) const
{
wxString str;
for ( const char *pc = m_pchData; *pc != '\0' && *pc != ch; pc++ )
/// get all characters before the last occurence of ch
/// (returns empty string if ch not found)
-wxString wxString::Before(char ch) const
+wxString wxString::BeforeLast(char ch) const
{
wxString str;
int iPos = Find(ch, TRUE);
- if ( iPos != NOT_FOUND && iPos != 0 )
+ if ( iPos != wxNOT_FOUND && iPos != 0 )
str = wxString(c_str(), iPos);
return str;
/// get all characters after the first occurence of ch
/// (returns empty string if ch not found)
-wxString wxString::After(char ch) const
+wxString wxString::AfterFirst(char ch) const
{
wxString str;
int iPos = Find(ch);
- if ( iPos != NOT_FOUND )
+ if ( iPos != wxNOT_FOUND )
str = c_str() + iPos + 1;
return str;
// trims spaces (in the sense of isspace) from left or right side
wxString& wxString::Trim(bool bFromRight)
{
- CopyBeforeWrite();
-
- if ( bFromRight )
+ // first check if we're going to modify the string at all
+ if ( !IsEmpty() &&
+ (
+ (bFromRight && isspace(GetChar(Len() - 1))) ||
+ (!bFromRight && isspace(GetChar(0u)))
+ )
+ )
{
- // find last non-space character
- char *psz = m_pchData + GetStringData()->nDataLength - 1;
- while ( isspace(*psz) && (psz >= m_pchData) )
- psz--;
-
- // truncate at trailing space start
- *++psz = '\0';
- GetStringData()->nDataLength = psz - m_pchData;
- }
- else
- {
- // find first non-space character
- const char *psz = m_pchData;
- while ( isspace(*psz) )
- psz++;
-
- // fix up data and length
- int nDataLength = GetStringData()->nDataLength - (psz - m_pchData);
- memmove(m_pchData, psz, (nDataLength + 1)*sizeof(char));
- GetStringData()->nDataLength = nDataLength;
+ // ok, there is at least one space to trim
+ CopyBeforeWrite();
+
+ if ( bFromRight )
+ {
+ // find last non-space character
+ char *psz = m_pchData + GetStringData()->nDataLength - 1;
+ while ( isspace(*psz) && (psz >= m_pchData) )
+ psz--;
+
+ // truncate at trailing space start
+ *++psz = '\0';
+ GetStringData()->nDataLength = psz - m_pchData;
+ }
+ else
+ {
+ // find first non-space character
+ const char *psz = m_pchData;
+ while ( isspace(*psz) )
+ psz++;
+
+ // fix up data and length
+ int nDataLength = GetStringData()->nDataLength - (psz - (const char*) m_pchData);
+ memmove(m_pchData, psz, (nDataLength + 1)*sizeof(char));
+ GetStringData()->nDataLength = nDataLength;
+ }
}
return *this;
// truncate the string
wxString& wxString::Truncate(size_t uiLen)
{
- *(m_pchData + uiLen) = '\0';
- GetStringData()->nDataLength = uiLen;
+ if ( uiLen < Len() ) {
+ CopyBeforeWrite();
+
+ *(m_pchData + uiLen) = '\0';
+ GetStringData()->nDataLength = uiLen;
+ }
+ //else: nothing to do, string is already short enough
return *this;
}
// ---------------------------------------------------------------------------
-// finding (return NOT_FOUND if not found and index otherwise)
+// finding (return wxNOT_FOUND if not found and index otherwise)
// ---------------------------------------------------------------------------
// find a character
{
const char *psz = bFromEnd ? strrchr(m_pchData, ch) : strchr(m_pchData, ch);
- return (psz == NULL) ? NOT_FOUND : psz - m_pchData;
+ return (psz == NULL) ? wxNOT_FOUND : psz - (const char*) m_pchData;
}
// find a sub-string (like strstr)
{
const char *psz = strstr(m_pchData, pszSub);
- return (psz == NULL) ? NOT_FOUND : psz - m_pchData;
+ return (psz == NULL) ? wxNOT_FOUND : psz - (const char*) m_pchData;
+}
+
+// ---------------------------------------------------------------------------
+// stream-like operators
+// ---------------------------------------------------------------------------
+wxString& wxString::operator<<(int i)
+{
+ wxString res;
+ res.Printf("%d", i);
+
+ return (*this) << res;
+}
+
+wxString& wxString::operator<<(float f)
+{
+ wxString res;
+ res.Printf("%f", f);
+
+ return (*this) << res;
+}
+
+wxString& wxString::operator<<(double d)
+{
+ wxString res;
+ res.Printf("%g", d);
+
+ return (*this) << res;
}
// ---------------------------------------------------------------------------
int wxString::PrintfV(const char* pszFormat, va_list argptr)
{
+ // static buffer to avoid dynamic memory allocation each time
static char s_szScratch[1024];
- int iLen = vsprintf(s_szScratch, pszFormat, argptr);
+ // NB: wxVsprintf() may return either less than the buffer size or -1 if there
+ // is not enough place depending on implementation
+ int iLen = wxVsprintf(s_szScratch, WXSIZEOF(s_szScratch), pszFormat, argptr);
+ char *buffer;
+ if ( iLen < (int)WXSIZEOF(s_szScratch) ) {
+ buffer = s_szScratch;
+ }
+ else {
+ int size = WXSIZEOF(s_szScratch) * 2;
+ buffer = (char *)malloc(size);
+ while ( buffer != NULL ) {
+ iLen = wxVsprintf(buffer, WXSIZEOF(s_szScratch), pszFormat, argptr);
+ if ( iLen < size ) {
+ // ok, there was enough space
+ break;
+ }
+
+ // still not enough, double it again
+ buffer = (char *)realloc(buffer, size *= 2);
+ }
+
+ if ( !buffer ) {
+ // out of memory
+ return -1;
+ }
+ }
+
AllocBeforeWrite(iLen);
- strcpy(m_pchData, s_szScratch);
+ strcpy(m_pchData, buffer);
+
+ if ( buffer != s_szScratch )
+ free(buffer);
return iLen;
}
return *pszTxt == '\0';
}
+// Count the number of chars
+int wxString::Freq(char ch) const
+{
+ int count = 0;
+ int len = Len();
+ for (int i = 0; i < len; i++)
+ {
+ if (GetChar(i) == ch)
+ count ++;
+ }
+ return count;
+}
+
+// convert to upper case, return the copy of the string
+wxString wxString::Upper() const
+{ wxString s(*this); return s.MakeUpper(); }
+
+// convert to lower case, return the copy of the string
+wxString wxString::Lower() const { wxString s(*this); return s.MakeLower(); }
+
+int wxString::sprintf(const char *pszFormat, ...)
+ {
+ va_list argptr;
+ va_start(argptr, pszFormat);
+ int iLen = PrintfV(pszFormat, argptr);
+ va_end(argptr);
+ return iLen;
+ }
+
// ---------------------------------------------------------------------------
// standard C++ library string functions
// ---------------------------------------------------------------------------
-#ifdef STD_STRING_COMPATIBILITY
+#ifdef wxSTD_STRING_COMPATIBILITY
wxString& wxString::insert(size_t nPos, const wxString& str)
{
}
// VC++ 1.5 can't cope with the default argument in the header.
-#if ! (defined(_MSC_VER) && !defined(__WIN32__))
+#if !defined(__VISUALC__) || defined(__WIN32__)
size_t wxString::find(const char* sz, size_t nStart, size_t n) const
{
return find(wxString(sz, n == npos ? 0 : n), nStart);
}
-#endif
+#endif // VC++ 1.5
+// Gives a duplicate symbol (presumably a case-insensitivity problem)
+#if !defined(__BORLANDC__)
size_t wxString::find(char ch, size_t nStart) const
{
wxASSERT( nStart <= Len() );
return p == NULL ? npos : p - c_str();
}
+#endif
size_t wxString::rfind(const wxString& str, size_t nStart) const
{
}
// VC++ 1.5 can't cope with the default argument in the header.
-#if ! (defined(_MSC_VER) && !defined(__WIN32__))
+#if !defined(__VISUALC__) || defined(__WIN32__)
size_t wxString::rfind(const char* sz, size_t nStart, size_t n) const
{
return rfind(wxString(sz, n == npos ? 0 : n), nStart);
return p == NULL ? npos : p - c_str();
}
-#endif
+#endif // VC++ 1.5
wxString wxString::substr(size_t nStart, size_t nLen) const
{
{
m_nSize =
m_nCount = 0;
- m_pItems = NULL;
+ m_pItems = (char **) NULL;
}
// copy ctor
{
m_nSize =
m_nCount = 0;
- m_pItems = NULL;
+ m_pItems = (char **) NULL;
*this = src;
}
}
}
- return NOT_FOUND;
+ return wxNOT_FOUND;
}
// add item at the end
{
int iIndex = Index(sz);
- wxCHECK_RET( iIndex != NOT_FOUND,
+ wxCHECK_RET( iIndex != wxNOT_FOUND,
_("removing inexistent element in wxArrayString::Remove") );
Remove(iIndex);
}
+// ----------------------------------------------------------------------------
+// sorting
+// ----------------------------------------------------------------------------
+
+// we can only sort one array at a time with the quick-sort based
+// implementation
+#if wxUSE_THREADS
+ #include <wx/thread.h>
+
+ // need a critical section to protect access to gs_compareFunction and
+ // gs_sortAscending variables
+ static wxCriticalSection *gs_critsectStringSort = NULL;
+
+ // call this before the value of the global sort vars is changed/after
+ // you're finished with them
+ #define START_SORT() wxASSERT( !gs_critsectStringSort ); \
+ gs_critsectStringSort = new wxCriticalSection; \
+ gs_critsectStringSort->Enter()
+ #define END_SORT() gs_critsectStringSort->Leave(); \
+ delete gs_critsectStringSort; \
+ gs_critsectStringSort = NULL
+#else // !threads
+ #define START_SORT()
+ #define END_SORT()
+#endif // wxUSE_THREADS
+
+// function to use for string comparaison
+static wxArrayString::CompareFunction gs_compareFunction = NULL;
+
+// if we don't use the compare function, this flag tells us if we sort the
+// array in ascending or descending order
+static bool gs_sortAscending = TRUE;
+
+// function which is called by quick sort
+static int wxStringCompareFunction(const void *first, const void *second)
+{
+ wxString *strFirst = (wxString *)first;
+ wxString *strSecond = (wxString *)second;
+
+ if ( gs_compareFunction ) {
+ return gs_compareFunction(*strFirst, *strSecond);
+ }
+ else {
+ int result = strcmp(strFirst->c_str(), strSecond->c_str());
+
+ return gs_sortAscending ? result : -result;
+ }
+}
+
// sort array elements using passed comparaison function
+void wxArrayString::Sort(CompareFunction compareFunction)
+{
+ START_SORT();
+
+ wxASSERT( !gs_compareFunction ); // must have been reset to NULL
+ gs_compareFunction = compareFunction;
+
+ DoSort();
+
+ END_SORT();
+}
+
+void wxArrayString::Sort(bool reverseOrder)
+{
+ START_SORT();
+
+ wxASSERT( !gs_compareFunction ); // must have been reset to NULL
+ gs_sortAscending = !reverseOrder;
+
+ DoSort();
+
+ END_SORT();
+}
-void wxArrayString::Sort(bool WXUNUSED(bCase), bool WXUNUSED(bReverse) )
+void wxArrayString::DoSort()
{
- //@@@@ TO DO
- //qsort(m_pItems, m_nCount, sizeof(char *), fCmp);
+ // just sort the pointers using qsort() - of course it only works because
+ // wxString() *is* a pointer to its data
+ qsort(m_pItems, m_nCount, sizeof(char *), wxStringCompareFunction);
}
projects / wxWidgets.git / blobdiff