#ifndef WX_PRECOMP
#include "wx/string.h"
#include "wx/wxcrtvararg.h"
+ #include "wx/log.h"
#endif
#include <ctype.h>
}
#endif
-#if wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY
-const char* wxCStrData::AsChar() const
-{
-#if wxUSE_UNICODE_UTF8
- if ( wxLocaleIsUtf8 )
- return AsInternal();
-#endif
- // under non-UTF8 locales, we have to convert the internal UTF-8
- // representation using wxConvLibc and cache the result
-
- wxString *str = wxConstCast(m_str, wxString);
-
- // convert the string:
- //
- // FIXME-UTF8: we'd like to do the conversion in the existing buffer (if we
- // have it) but it's unfortunately not obvious to implement
- // because we don't know how big buffer do we need for the
- // given string length (in case of multibyte encodings, e.g.
- // ISO-2022-JP or UTF-8 when internal representation is wchar_t)
- //
- // One idea would be to store more than just m_convertedToChar
- // in wxString: then we could record the length of the string
- // which was converted the last time and try to reuse the same
- // buffer if the current length is not greater than it (this
- // could still fail because string could have been modified in
- // place but it would work most of the time, so we'd do it and
- // only allocate the new buffer if in-place conversion returned
- // an error). We could also store a bit saying if the string
- // was modified since the last conversion (and update it in all
- // operation modifying the string, of course) to avoid unneeded
- // consequential conversions. But both of these ideas require
- // adding more fields to wxString and require profiling results
- // to be sure that we really gain enough from them to justify
- // doing it.
- wxScopedCharBuffer buf(str->mb_str());
-
- // if it failed, return empty string and not NULL to avoid crashes in code
- // written with either wxWidgets 2 wxString or std::string behaviour in
- // mind: neither of them ever returns NULL and so we shouldn't neither
- if ( !buf )
- return "";
-
- if ( str->m_convertedToChar &&
- strlen(buf) == strlen(str->m_convertedToChar) )
- {
- // keep the same buffer for as long as possible, so that several calls
- // to c_str() in a row still work:
- strcpy(str->m_convertedToChar, buf);
- }
- else
- {
- str->m_convertedToChar = buf.release();
- }
-
- // and keep it:
- return str->m_convertedToChar + m_offset;
-}
-#endif // wxUSE_UNICODE && !wxUSE_UTF8_LOCALE_ONLY
-
-#if !wxUSE_UNICODE_WCHAR
-const wchar_t* wxCStrData::AsWChar() const
-{
- wxString *str = wxConstCast(m_str, wxString);
-
- // convert the string:
- wxScopedWCharBuffer buf(str->wc_str());
-
- // notice that here, unlike above in AsChar(), conversion can't fail as our
- // internal UTF-8 is always well-formed -- or the string was corrupted and
- // all bets are off anyhow
-
- // FIXME-UTF8: do the conversion in-place in the existing buffer
- if ( str->m_convertedToWChar &&
- wxWcslen(buf) == wxWcslen(str->m_convertedToWChar) )
- {
- // keep the same buffer for as long as possible, so that several calls
- // to c_str() in a row still work:
- memcpy(str->m_convertedToWChar, buf, sizeof(wchar_t) * wxWcslen(buf));
- }
- else
- {
- str->m_convertedToWChar = buf.release();
- }
-
- // and keep it:
- return str->m_convertedToWChar + m_offset;
-}
-#endif // !wxUSE_UNICODE_WCHAR
-
// ===========================================================================
// wxString class core
// ===========================================================================
}
#endif // wxUSE_UNICODE_UTF8 || !wxUSE_UNICODE
+// This std::string::c_str()-like method returns a wide char pointer to string
+// contents. In wxUSE_UNICODE_WCHAR case it is trivial as it can simply return
+// a pointer to the internal representation. Otherwise a conversion is required
+// and it returns a temporary buffer.
+//
+// However for compatibility with c_str() and to avoid breaking existing code
+// doing
+//
+// for ( const wchar_t *p = s.wc_str(); *p; p++ )
+// ... use *p...
+//
+// we actually need to ensure that the returned buffer is _not_ temporary and
+// so we use wxString::m_convertedToWChar to store the returned data
+#if !wxUSE_UNICODE_WCHAR
-#if wxUSE_UNICODE_WCHAR
-
-//Convert wxString in Unicode mode to a multi-byte string
-const wxScopedCharBuffer wxString::mb_str(const wxMBConv& conv) const
+const wchar_t *wxString::AsWChar(const wxMBConv& conv) const
{
- // NB: Length passed to cWC2MB() doesn't include terminating NUL, it's
- // added by it automatically. If we passed length()+1 here, it would
- // create a buffer with 2 trailing NULs of length one greater than
- // expected.
- return conv.cWC2MB(wx_str(), length(), NULL);
-}
+ const char * const strMB = m_impl.c_str();
+ const size_t lenMB = m_impl.length();
-#elif wxUSE_UNICODE_UTF8
+ // find out the size of the buffer needed
+ const size_t lenWC = conv.ToWChar(NULL, 0, strMB, lenMB);
+ if ( lenWC == wxCONV_FAILED )
+ return NULL;
-const wxScopedWCharBuffer wxString::wc_str() const
-{
- // NB: Length passed to cMB2WC() doesn't include terminating NUL, it's
- // added by it automatically. If we passed length()+1 here, it would
- // create a buffer with 2 trailing NULs of length one greater than
- // expected.
- return wxMBConvStrictUTF8().cMB2WC
- (
- m_impl.c_str(),
- m_impl.length(),
- NULL
- );
+ // keep the same buffer if the string size didn't change: this is not only
+ // an optimization but also ensure that code which modifies string
+ // character by character (without changing its length) can continue to use
+ // the pointer returned by a previous wc_str() call even after changing the
+ // string
+
+ // TODO-UTF8: we could check for ">" instead of "!=" here as this would
+ // allow to save on buffer reallocations but at the cost of
+ // consuming (even) more memory, we should benchmark this to
+ // determine if it's worth doing
+ if ( !m_convertedToWChar.m_str || lenWC != m_convertedToWChar.m_len )
+ {
+ if ( !const_cast<wxString *>(this)->m_convertedToWChar.Extend(lenWC) )
+ return NULL;
+ }
+
+ // finally do convert
+ m_convertedToWChar.m_str[lenWC] = L'\0';
+ if ( conv.ToWChar(m_convertedToWChar.m_str, lenWC,
+ strMB, lenMB) == wxCONV_FAILED )
+ return NULL;
+
+ return m_convertedToWChar.m_str;
}
-const wxScopedCharBuffer wxString::mb_str(const wxMBConv& conv) const
+#endif // !wxUSE_UNICODE_WCHAR
+
+
+// Same thing for mb_str() which returns a normal char pointer to string
+// contents: this always requires converting it to the specified encoding in
+// non-ANSI build except if we need to convert to UTF-8 and this is what we
+// already use internally.
+#if wxUSE_UNICODE
+
+const char *wxString::AsChar(const wxMBConv& conv) const
{
+#if wxUSE_UNICODE_UTF8
if ( conv.IsUTF8() )
- return wxScopedCharBuffer::CreateNonOwned(m_impl.c_str(), m_impl.length());
+ return m_impl.c_str();
- wxScopedWCharBuffer wcBuf(wc_str());
- if ( !wcBuf.length() )
- return wxCharBuffer("");
+ const wchar_t * const strWC = AsWChar(wxMBConvStrictUTF8());
+ const size_t lenWC = m_convertedToWChar.m_len;
+#else // wxUSE_UNICODE_WCHAR
+ const wchar_t * const strWC = m_impl.c_str();
+ const size_t lenWC = m_impl.length();
+#endif // wxUSE_UNICODE_UTF8/wxUSE_UNICODE_WCHAR
- return conv.cWC2MB(wcBuf.data(), wcBuf.length(), NULL);
-}
+ const size_t lenMB = conv.FromWChar(NULL, 0, strWC, lenWC);
+ if ( lenMB == wxCONV_FAILED )
+ return NULL;
-#else // ANSI
+ if ( !m_convertedToChar.m_str || lenMB != m_convertedToChar.m_len )
+ {
+ if ( !const_cast<wxString *>(this)->m_convertedToChar.Extend(lenMB) )
+ return NULL;
+ }
-//Converts this string to a wide character string if unicode
-//mode is not enabled and wxUSE_WCHAR_T is enabled
-const wxScopedWCharBuffer wxString::wc_str(const wxMBConv& conv) const
-{
- // NB: Length passed to cMB2WC() doesn't include terminating NUL, it's
- // added by it automatically. If we passed length()+1 here, it would
- // create a buffer with 2 trailing NULs of length one greater than
- // expected.
- return conv.cMB2WC(wx_str(), length(), NULL);
+ m_convertedToChar.m_str[lenMB] = '\0';
+ if ( conv.FromWChar(m_convertedToChar.m_str, lenMB,
+ strWC, lenWC) == wxCONV_FAILED )
+ return NULL;
+
+ return m_convertedToChar.m_str;
}
-#endif // Unicode/ANSI
+#endif // wxUSE_UNICODE
// shrink to minimal size (releasing extra memory)
bool wxString::Shrink()
wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );
WX_STRING_TO_X_TYPE_START
-#if wxUSE_UNICODE_UTF8 || !wxUSE_UNICODE
+#if (wxUSE_UNICODE_UTF8 || !wxUSE_UNICODE) && defined(wxHAS_XLOCALE_SUPPORT)
long val = wxStrtol_lA(start, &end, base, wxCLocale);
#else
long val = wxStrtol_l(start, &end, base, wxCLocale);
wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );
WX_STRING_TO_X_TYPE_START
-#if wxUSE_UNICODE_UTF8 || !wxUSE_UNICODE
+#if (wxUSE_UNICODE_UTF8 || !wxUSE_UNICODE) && defined(wxHAS_XLOCALE_SUPPORT)
unsigned long val = wxStrtoul_lA(start, &end, base, wxCLocale);
#else
unsigned long val = wxStrtoul_l(start, &end, base, wxCLocale);
bool wxString::ToCDouble(double *pVal) const
{
WX_STRING_TO_X_TYPE_START
-#if wxUSE_UNICODE_UTF8 || !wxUSE_UNICODE
+#if (wxUSE_UNICODE_UTF8 || !wxUSE_UNICODE) && defined(wxHAS_XLOCALE_SUPPORT)
double val = wxStrtod_lA(start, &end, wxCLocale);
#else
double val = wxStrtod_l(start, &end, wxCLocale);
projects / wxWidgets.git / blobdiff