X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f68ca36e0d9c7c2549a10ab612aef2e92e7f8be9..700dbceb374774f5207a2daf2b7ea69e08bfd56f:/src/common/string.cpp?ds=inline

diff --git a/src/common/string.cpp b/src/common/string.cpp
index b9e30160aa..5bb461cb17 100644
--- a/src/common/string.cpp
+++ b/src/common/string.cpp
@@ -10,10 +10,6 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-  #pragma implementation "string.h"
-#endif
-
 /*
  * About ref counting:
  *  1) all empty strings use g_strEmpty, nRefs = -1 (set in Init())
@@ -131,8 +127,12 @@ wxSTD istream& operator>>(wxSTD istream& is, wxString& WXUNUSED(str))
 
 wxSTD ostream& operator<<(wxSTD ostream& os, const wxString& str)
 {
-  os << str.c_str();
-  return os;
+#ifdef __BORLANDC__
+    os << str.mb_str();
+#else
+    os << str.c_str();
+#endif
+    return os;
 }
 
 #endif // wxUSE_STD_IOSTREAM
@@ -312,13 +312,15 @@ bool wxStringBase::AllocBeforeWrite(size_t nLen)
       pData->nAllocLength = nLen;
       m_pchData = pData->data();
     }
-
-    // now we have enough space, just update the string length
-    pData->nDataLength = nLen;
   }
 
   wxASSERT( !GetStringData()->IsShared() );  // we must be the only owner
 
+  // it doesn't really matter what the string length is as it's going to be
+  // overwritten later but, for extra safety, set it to 0 for now as we may
+  // have some junk in m_pchData
+  GetStringData()->nDataLength = 0;
+
   return true;
 }
 
@@ -326,7 +328,7 @@ wxStringBase& wxStringBase::append(size_t n, wxChar ch)
 {
     size_type len = length();
 
-    if ( !CopyBeforeWrite() || !Alloc(len + n) ) {
+    if ( !Alloc(len + n) || !CopyBeforeWrite() ) {
       wxFAIL_MSG( _T("out of memory in wxStringBase::append") );
     }
     GetStringData()->nDataLength = len + n;
@@ -359,8 +361,8 @@ bool wxStringBase::Alloc(size_t nLen)
     if ( pData->IsEmpty() ) {
       nLen += EXTRA_ALLOC;
 
-      wxStringData* pData = (wxStringData*)
-          malloc(sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
+      pData = (wxStringData *)
+                malloc(sizeof(wxStringData) + (nLen + 1)*sizeof(wxChar));
 
       if ( pData == NULL ) {
         // allocation failure handled by caller
@@ -380,7 +382,9 @@ bool wxStringBase::Alloc(size_t nLen)
         // allocation failure handled by caller
         return false;
       }
-      memcpy(m_pchData, pData->data(), nOldLen*sizeof(wxChar));
+      // +1 to copy the terminator, too
+      memcpy(m_pchData, pData->data(), (nOldLen+1)*sizeof(wxChar));
+      GetStringData()->nDataLength = nOldLen;
     }
     else {
       nLen += EXTRA_ALLOC;
@@ -427,35 +431,35 @@ wxStringBase::iterator wxStringBase::erase(iterator it)
 
 wxStringBase& wxStringBase::erase(size_t nStart, size_t nLen)
 {
-  wxASSERT(nStart <= length());
-  size_t strLen = length() - nStart;
-  // delete nLen or up to the end of the string characters
-  nLen = strLen < nLen ? strLen : nLen;
-  wxString strTmp(c_str(), nStart);
-  strTmp.append(c_str() + nStart + nLen, length() - nStart - nLen);
+    wxASSERT(nStart <= length());
+    size_t strLen = length() - nStart;
+    // delete nLen or up to the end of the string characters
+    nLen = strLen < nLen ? strLen : nLen;
+    wxString strTmp(c_str(), nStart);
+    strTmp.append(c_str() + nStart + nLen, length() - nStart - nLen);
 
-  swap(strTmp);
-  return *this;
+    swap(strTmp);
+    return *this;
 }
 
 wxStringBase& wxStringBase::insert(size_t nPos, const wxChar *sz, size_t n)
 {
-  wxASSERT( nPos <= length() );
+    wxASSERT( nPos <= length() );
 
-  if ( n == npos ) n = wxStrlen(sz);
-  if ( n == 0 ) return *this;
+    if ( n == npos ) n = wxStrlen(sz);
+    if ( n == 0 ) return *this;
 
-  if ( !CopyBeforeWrite() || !Alloc(length() + n) ) {
-    wxFAIL_MSG( _T("out of memory in wxStringBase::insert") );
-  }
+    if ( !Alloc(length() + n) || !CopyBeforeWrite() ) {
+        wxFAIL_MSG( _T("out of memory in wxStringBase::insert") );
+    }
 
-  memmove(m_pchData + nPos + n, m_pchData + nPos,
-          (length() - nPos) * sizeof(wxChar));
-  memcpy(m_pchData + nPos, sz, n * sizeof(wxChar));
-  GetStringData()->nDataLength = length() + n;
-  m_pchData[length()] = '\0';
+    memmove(m_pchData + nPos + n, m_pchData + nPos,
+            (length() - nPos) * sizeof(wxChar));
+    memcpy(m_pchData + nPos, sz, n * sizeof(wxChar));
+    GetStringData()->nDataLength = length() + n;
+    m_pchData[length()] = '\0';
 
-  return *this;
+    return *this;
 }
 
 void wxStringBase::swap(wxStringBase& str)
@@ -467,50 +471,50 @@ void wxStringBase::swap(wxStringBase& str)
 
 size_t wxStringBase::find(const wxStringBase& str, size_t nStart) const
 {
-  wxASSERT( str.GetStringData()->IsValid() );
-  wxASSERT( nStart <= length() );
+    wxASSERT( str.GetStringData()->IsValid() );
+    wxASSERT( nStart <= length() );
 
-  //anchor
-  const wxChar* p = (const wxChar*)wxTmemchr(c_str() + nStart,
-                                            str.c_str()[0],
-                                            length() - nStart);
+    //anchor
+    const wxChar* p = (const wxChar*)wxTmemchr(c_str() + nStart,
+                                               str.c_str()[0],
+                                               length() - nStart);
 
-  if(!p)
-      return npos;
+    if(!p)
+        return npos;
 
-  while(p - c_str() + str.length() <= length() &&
-        wxTmemcmp(p, str.c_str(), str.length()) )
-  {
-      //Previosly passed as the first argument to wxTmemchr,
-      //but C/C++ standard does not specify evaluation order
-      //of arguments to functions -
-      //http://embedded.com/showArticle.jhtml?articleID=9900607
-      ++p;
-
-      //anchor again
-      p = (const wxChar*)wxTmemchr(p,
-                                  str.c_str()[0],
-                                  length() - (p - c_str()));
-
-      if(!p)
-          return npos;
-  }
+    while(p - c_str() + str.length() <= length() &&
+          wxTmemcmp(p, str.c_str(), str.length()) )
+    {
+        //Previosly passed as the first argument to wxTmemchr,
+        //but C/C++ standard does not specify evaluation order
+        //of arguments to functions -
+        //http://embedded.com/showArticle.jhtml?articleID=9900607
+        ++p;
+
+        //anchor again
+        p = (const wxChar*)wxTmemchr(p,
+                                     str.c_str()[0],
+                                     length() - (p - c_str()));
 
-   return (p - c_str() + str.length() <= length()) ? p - c_str() : npos;
+        if(!p)
+            return npos;
+    }
+
+    return (p - c_str() + str.length() <= length()) ? p - c_str() : npos;
 }
 
 size_t wxStringBase::find(const wxChar* sz, size_t nStart, size_t n) const
 {
-  return find(wxStringBase(sz, n), nStart);
+    return find(wxStringBase(sz, n), nStart);
 }
 
 size_t wxStringBase::find(wxChar ch, size_t nStart) const
 {
-  wxASSERT( nStart <= length() );
+    wxASSERT( nStart <= length() );
 
-  const wxChar *p = (const wxChar*)wxTmemchr(c_str() + nStart, ch, length() - nStart);
+    const wxChar *p = (const wxChar*)wxTmemchr(c_str() + nStart, ch, length() - nStart);
 
-  return p == NULL ? npos : p - c_str();
+    return p == NULL ? npos : p - c_str();
 }
 
 size_t wxStringBase::rfind(const wxStringBase& str, size_t nStart) const
@@ -731,10 +735,22 @@ wxStringBase& wxStringBase::replace(size_t nStart, size_t nLen,
   wxStringBase strTmp;
   strTmp.reserve(length()); // micro optimisation to avoid multiple mem allocs
 
-  if ( nStart != 0 )
-    strTmp.append(c_str(), nStart);
+  //This is kind of inefficient, but its pretty good considering...
+  //we don't want to use character access operators here because on STL
+  //it will freeze the reference count of strTmp, which means a deep copy
+  //at the end when swap is called
+  //
+  //Also, we can't use append with the full character pointer and must
+  //do it manually because this string can contain null characters
+  for(size_t i1 = 0; i1 < nStart; ++i1)
+      strTmp.append(1, this->c_str()[i1]);
+
+  //its safe to do the full version here because
+  //sz must be a normal c string
   strTmp.append(sz);
-  strTmp.append(c_str() + nStart + nLen);
+
+  for(size_t i2 = nStart + nLen; i2 < length(); ++i2)
+      strTmp.append(1, this->c_str()[i2]);
 
   swap(strTmp);
   return *this;
@@ -1225,7 +1241,7 @@ wxString operator+(const wxString& str, const wxChar *psz)
   if ( !s.Alloc(wxStrlen(psz) + str.Len()) ) {
     wxFAIL_MSG( _T("out of memory in wxString::operator+") );
   }
-  s = str;
+  s += str;
   s += psz;
 
   return s;
@@ -1377,32 +1393,33 @@ const wxCharBuffer wxString::ToAscii() const
 // extract string of length nCount starting at nFirst
 wxString wxString::Mid(size_t nFirst, size_t nCount) const
 {
-  size_t nLen = length();
+    size_t nLen = length();
 
-  // default value of nCount is npos and means "till the end"
-  if ( nCount == npos )
-  {
-    nCount = nLen - nFirst;
-  }
+    // default value of nCount is npos and means "till the end"
+    if ( nCount == npos )
+    {
+        nCount = nLen - nFirst;
+    }
 
-  // out-of-bounds requests return sensible things
-  if ( nFirst + nCount > nLen )
-  {
-    nCount = nLen - nFirst;
-  }
+    // out-of-bounds requests return sensible things
+    if ( nFirst + nCount > nLen )
+    {
+        nCount = nLen - nFirst;
+    }
 
-  if ( nFirst > nLen )
-  {
-    // AllocCopy() will return empty string
-    nCount = 0;
-  }
+    if ( nFirst > nLen )
+    {
+        // AllocCopy() will return empty string
+        return wxEmptyString;
+    }
 
-  wxString dest(*this, nFirst, nCount);
-  if ( dest.length() != nCount ) {
-      wxFAIL_MSG( _T("out of memory in wxString::Mid") );
-  }
+    wxString dest(*this, nFirst, nCount);
+    if ( dest.length() != nCount )
+    {
+        wxFAIL_MSG( _T("out of memory in wxString::Mid") );
+    }
 
-  return dest;
+    return dest;
 }
 
 // check that the string starts with prefix and return the rest of the string
@@ -1508,55 +1525,46 @@ wxString wxString::AfterFirst(wxChar ch) const
 }
 
 // replace first (or all) occurences of some substring with another one
-size_t
-wxString::Replace(const wxChar *szOld, const wxChar *szNew, bool bReplaceAll)
+size_t wxString::Replace(const wxChar *szOld,
+                  const wxChar *szNew, bool bReplaceAll)
 {
     // if we tried to replace an empty string we'd enter an infinite loop below
     wxCHECK_MSG( szOld && *szOld && szNew, 0,
                  _T("wxString::Replace(): invalid parameter") );
 
-  size_t uiCount = 0;   // count of replacements made
+    size_t uiCount = 0;   // count of replacements made
 
-  size_t uiOldLen = wxStrlen(szOld);
+    size_t uiOldLen = wxStrlen(szOld);
+    size_t uiNewLen = wxStrlen(szNew);
 
-  wxString strTemp;
-  const wxChar *pCurrent = c_str();
-  const wxChar *pSubstr;
-  while ( *pCurrent != wxT('\0') ) {
-    pSubstr = wxStrstr(pCurrent, szOld);
-    if ( pSubstr == NULL ) {
-      // strTemp is unused if no replacements were made, so avoid the copy
-      if ( uiCount == 0 )
-        return 0;
+    size_t dwPos = 0;
 
-      strTemp += pCurrent;    // copy the rest
-      break;                  // exit the loop
-    }
-    else {
-      // take chars before match
-      size_type len = strTemp.length();
-      strTemp.append(pCurrent, pSubstr - pCurrent);
-      if ( strTemp.length() != (size_t)(len + pSubstr - pCurrent) ) {
-        wxFAIL_MSG( _T("out of memory in wxString::Replace") );
-        return 0;
-      }
-      strTemp += szNew;
-      pCurrent = pSubstr + uiOldLen;  // restart after match
+    while ( this->c_str()[dwPos] != wxT('\0') )
+    {
+        //DO NOT USE STRSTR HERE
+        //this string can contain embedded null characters,
+        //so strstr will function incorrectly
+        dwPos = find(szOld, dwPos);
+        if ( dwPos == npos )
+            break;                  // exit the loop
+        else
+        {
+            //replace this occurance of the old string with the new one
+            replace(dwPos, uiOldLen, szNew, uiNewLen);
 
-      uiCount++;
+            //move up pos past the string that was replaced
+            dwPos += uiNewLen;
 
-      // stop now?
-      if ( !bReplaceAll ) {
-        strTemp += pCurrent;    // copy the rest
-        break;                  // exit the loop
-      }
-    }
-  }
+            //increase replace count
+            ++uiCount;
 
-  // only done if there were replacements, otherwise would have returned above
-  swap(strTemp);
+            // stop now?
+            if ( !bReplaceAll )
+                break;                  // exit the loop
+        }
+    }
 
-  return uiCount;
+    return uiCount;
 }
 
 bool wxString::IsAscii() const
@@ -1788,57 +1796,60 @@ wxString wxString::FormatV(const wxChar *pszFormat, va_list argptr)
 
 int wxString::Printf(const wxChar *pszFormat, ...)
 {
-  va_list argptr;
-  va_start(argptr, pszFormat);
+    va_list argptr;
+    va_start(argptr, pszFormat);
 
-  int iLen = PrintfV(pszFormat, argptr);
+    int iLen = PrintfV(pszFormat, argptr);
 
-  va_end(argptr);
+    va_end(argptr);
 
-  return iLen;
+    return iLen;
 }
 
 int wxString::PrintfV(const wxChar* pszFormat, va_list argptr)
 {
     int size = 1024;
-    int len;
 
     for ( ;; )
     {
+        wxStringBuffer tmp(*this, size + 1);
+        wxChar *buf = tmp;
+
+        if ( !buf )
         {
-            wxStringBuffer tmp(*this, size + 1);
-            wxChar* buf = tmp;
+            // out of memory
+            return -1;
+        }
 
-            if ( !buf )
-            {
-                // out of memory
-                return -1;
-            }
+        // wxVsnprintf() may modify the original arg pointer, so pass it
+        // only a copy
+        va_list argptrcopy;
+        wxVaCopy(argptrcopy, argptr);
+        int len = wxVsnprintf(buf, size, pszFormat, argptrcopy);
+        va_end(argptrcopy);
 
-            // wxVsnprintf() may modify the original arg pointer, so pass it
-            // only a copy
-            va_list argptrcopy;
-            wxVaCopy(argptrcopy, argptr);
-            len = wxVsnprintf(buf, size, pszFormat, argptrcopy);
-            va_end(argptrcopy);
-
-            // some implementations of vsnprintf() don't NUL terminate
-            // the string if there is not enough space for it so
-            // always do it manually
-            buf[size] = _T('\0');
-        }
+        // some implementations of vsnprintf() don't NUL terminate
+        // the string if there is not enough space for it so
+        // always do it manually
+        buf[size] = _T('\0');
 
         // vsnprintf() may return either -1 (traditional Unix behaviour) or the
         // total number of characters which would have been written if the
-        // buffer were large enough
-        if ( len >= 0 && len <= size )
+        // buffer were large enough (newer standards such as Unix98)
+        if ( len < 0 )
+        {
+            // still not enough, as we don't know how much we need, double the
+            // current size of the buffer
+            size *= 2;
+        }
+        else if ( len > size )
+        {
+            size = len;
+        }
+        else // ok, there was enough space
         {
-            // ok, there was enough space
             break;
         }
-
-        // still not enough, double it again
-        size *= 2;
     }
 
     // we could have overshot
@@ -2024,6 +2035,24 @@ int wxString::sprintf(const wxChar *pszFormat, ...)
 
 #include "wx/arrstr.h"
 
+wxArrayString::wxArrayString(size_t sz, const wxChar** a)
+{
+#if !wxUSE_STL
+    Init(false);
+#endif
+    for (size_t i=0; i < sz; i++)
+        Add(a[i]);
+}
+
+wxArrayString::wxArrayString(size_t sz, const wxString* a)
+{
+#if !wxUSE_STL
+    Init(false);
+#endif
+    for (size_t i=0; i < sz; i++)
+        Add(a[i]);
+}
+
 #if !wxUSE_STL
 
 // size increment = min(50% of current size, ARRAY_MAXSIZE_INCREMENT)
@@ -2460,7 +2489,11 @@ void wxArrayString::Sort(CompareFunction compareFunction)
   END_SORT();
 }
 
-typedef  int (wxC_CALLING_CONV * wxStringCompareFn)(const void *first, const void *second);
+extern "C"
+{
+    typedef int (wxC_CALLING_CONV * wxStringCompareFn)(const void *first,
+                                                       const void *second);
+}
 
 void wxArrayString::Sort(CompareFunction2 compareFunction)
 {