// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-/*
- * About ref counting:
- * 1) all empty strings use g_strEmpty, nRefs = -1 (set in Init())
- * 2) AllocBuffer() sets nRefs to 1, Lock() increments it by one
- * 3) Unlock() decrements nRefs and frees memory if it goes to 0
- */
-
// ===========================================================================
// headers, declarations, constants
// ===========================================================================
#ifndef WX_PRECOMP
#include "wx/string.h"
+ #include "wx/wxcrtvararg.h"
+ #include "wx/log.h"
#endif
#include <ctype.h>
#include <string.h>
#include <stdlib.h>
-#ifdef __SALFORDC__
- #include <clib.h>
-#endif
+#include "wx/hashmap.h"
+#include "wx/vector.h"
+#include "wx/xlocale.h"
+#ifdef __WXMSW__
+ #include "wx/msw/wrapwin.h"
+#endif // __WXMSW__
// string handling functions used by wxString:
#if wxUSE_UNICODE_UTF8
#define wxStringStrlen wxStrlen
#endif
+// define a function declared in wx/buffer.h here as we don't have buffer.cpp
+// and don't want to add it just because of this simple function
+namespace wxPrivate
+{
+
+// wxXXXBuffer classes can be (implicitly) used during global statics
+// initialization so wrap the status UntypedBufferData variable in a function
+// to make it safe to access it even before all global statics are initialized
+UntypedBufferData *GetUntypedNullData()
+{
+ static UntypedBufferData s_untypedNullData(NULL, 0);
+
+ return &s_untypedNullData;
+}
+
+} // namespace wxPrivate
// ---------------------------------------------------------------------------
// static class variables definition
//According to STL _must_ be a -1 size_t
const size_t wxString::npos = (size_t) -1;
+#if wxUSE_STRING_POS_CACHE
+
+#ifdef wxHAS_COMPILER_TLS
+
+wxTLS_TYPE(wxString::Cache) wxString::ms_cache;
+
+#else // !wxHAS_COMPILER_TLS
+
+struct wxStrCacheInitializer
+{
+ wxStrCacheInitializer()
+ {
+ // calling this function triggers s_cache initialization in it, and
+ // from now on it becomes safe to call from multiple threads
+ wxString::GetCache();
+ }
+};
+
+/*
+wxString::Cache& wxString::GetCache()
+{
+ static wxTLS_TYPE(Cache) s_cache;
+
+ return wxTLS_VALUE(s_cache);
+}
+*/
+
+static wxStrCacheInitializer gs_stringCacheInit;
+
+#endif // wxHAS_COMPILER_TLS/!wxHAS_COMPILER_TLS
+
+// gdb seems to be unable to display thread-local variables correctly, at least
+// not my 6.4.98 version under amd64, so provide this debugging helper to do it
+#if wxDEBUG_LEVEL >= 2
+
+struct wxStrCacheDumper
+{
+ static void ShowAll()
+ {
+ puts("*** wxString cache dump:");
+ for ( unsigned n = 0; n < wxString::Cache::SIZE; n++ )
+ {
+ const wxString::Cache::Element&
+ c = wxString::GetCacheBegin()[n];
+
+ printf("\t%u%s\t%p: pos=(%lu, %lu), len=%ld\n",
+ n,
+ n == wxString::LastUsedCacheElement() ? " [*]" : "",
+ c.str,
+ (unsigned long)c.pos,
+ (unsigned long)c.impl,
+ (long)c.len);
+ }
+ }
+};
+
+void wxDumpStrCache() { wxStrCacheDumper::ShowAll(); }
+
+#endif // wxDEBUG_LEVEL >= 2
+
+#ifdef wxPROFILE_STRING_CACHE
+
+wxString::CacheStats wxString::ms_cacheStats;
+
+struct wxStrCacheStatsDumper
+{
+ ~wxStrCacheStatsDumper()
+ {
+ const wxString::CacheStats& stats = wxString::ms_cacheStats;
+
+ if ( stats.postot )
+ {
+ puts("*** wxString cache statistics:");
+ printf("\tTotal non-trivial calls to PosToImpl(): %u\n",
+ stats.postot);
+ printf("\tHits %u (of which %u not used) or %.2f%%\n",
+ stats.poshits,
+ stats.mishits,
+ 100.*float(stats.poshits - stats.mishits)/stats.postot);
+ printf("\tAverage position requested: %.2f\n",
+ float(stats.sumpos) / stats.postot);
+ printf("\tAverage offset after cached hint: %.2f\n",
+ float(stats.sumofs) / stats.postot);
+ }
+
+ if ( stats.lentot )
+ {
+ printf("\tNumber of calls to length(): %u, hits=%.2f%%\n",
+ stats.lentot, 100.*float(stats.lenhits)/stats.lentot);
+ }
+ }
+};
+
+static wxStrCacheStatsDumper s_showCacheStats;
+
+#endif // wxPROFILE_STRING_CACHE
+
+#endif // wxUSE_STRING_POS_CACHE
+
// ----------------------------------------------------------------------------
// global functions
// ----------------------------------------------------------------------------
#include <iostream>
+wxSTD ostream& operator<<(wxSTD ostream& os, const wxCStrData& str)
+{
+#if wxUSE_UNICODE && !wxUSE_UNICODE_UTF8
+ const wxScopedCharBuffer buf(str.AsCharBuf());
+ if ( !buf )
+ os.clear(wxSTD ios_base::failbit);
+ else
+ os << buf.data();
+
+ return os;
+#else
+ return os << str.AsInternal();
+#endif
+}
+
wxSTD ostream& operator<<(wxSTD ostream& os, const wxString& str)
{
return os << str.c_str();
}
-wxSTD ostream& operator<<(wxSTD ostream& os, const wxCStrData& str)
+wxSTD ostream& operator<<(wxSTD ostream& os, const wxScopedCharBuffer& str)
{
-#if wxUSE_UNICODE && !defined(__BORLANDC__)
- return os << str.AsWChar();
-#else
- return os << str.AsChar();
+ return os << str.data();
+}
+
+#ifndef __BORLANDC__
+wxSTD ostream& operator<<(wxSTD ostream& os, const wxScopedWCharBuffer& str)
+{
+ return os << str.data();
+}
#endif
+
+#if wxUSE_UNICODE && defined(HAVE_WOSTREAM)
+
+wxSTD wostream& operator<<(wxSTD wostream& wos, const wxString& str)
+{
+ return wos << str.wc_str();
}
+wxSTD wostream& operator<<(wxSTD wostream& wos, const wxCStrData& str)
+{
+ return wos << str.AsWChar();
+}
+
+wxSTD wostream& operator<<(wxSTD wostream& wos, const wxScopedWCharBuffer& str)
+{
+ return wos << str.data();
+}
+
+#endif // wxUSE_UNICODE && defined(HAVE_WOSTREAM)
+
#endif // wxUSE_STD_IOSTREAM
// ===========================================================================
// wxString class core
// ===========================================================================
+#if wxUSE_UNICODE_UTF8
+
+void wxString::PosLenToImpl(size_t pos, size_t len,
+ size_t *implPos, size_t *implLen) const
+{
+ if ( pos == npos )
+ {
+ *implPos = npos;
+ }
+ else // have valid start position
+ {
+ const const_iterator b = GetIterForNthChar(pos);
+ *implPos = wxStringImpl::const_iterator(b.impl()) - m_impl.begin();
+ if ( len == npos )
+ {
+ *implLen = npos;
+ }
+ else // have valid length too
+ {
+ // we need to handle the case of length specifying a substring
+ // going beyond the end of the string, just as std::string does
+ const const_iterator e(end());
+ const_iterator i(b);
+ while ( len && i <= e )
+ {
+ ++i;
+ --len;
+ }
+
+ *implLen = i.impl() - b.impl();
+ }
+ }
+}
+
+#endif // wxUSE_UNICODE_UTF8
+
+// ----------------------------------------------------------------------------
+// wxCStrData converted strings caching
+// ----------------------------------------------------------------------------
+
+// FIXME-UTF8: temporarily disabled because it doesn't work with global
+// string objects; re-enable after fixing this bug and benchmarking
+// performance to see if using a hash is a good idea at all
+#if 0
+
+// For backward compatibility reasons, it must be possible to assign the value
+// returned by wxString::c_str() to a char* or wchar_t* variable and work with
+// it. Returning wxCharBuffer from (const char*)c_str() wouldn't do the trick,
+// because the memory would be freed immediately, but it has to be valid as long
+// as the string is not modified, so that code like this still works:
+//
+// const wxChar *s = str.c_str();
+// while ( s ) { ... }
+
+// FIXME-UTF8: not thread safe!
+// FIXME-UTF8: we currently clear the cached conversion only when the string is
+// destroyed, but we should do it when the string is modified, to
+// keep memory usage down
+// FIXME-UTF8: we do the conversion every time As[W]Char() is called, but if we
+// invalidated the cache on every change, we could keep the previous
+// conversion
+// FIXME-UTF8: add tracing of usage of these two methods - new code is supposed
+// to use mb_str() or wc_str() instead of (const [w]char*)c_str()
+
+template<typename T>
+static inline void DeleteStringFromConversionCache(T& hash, const wxString *s)
+{
+ typename T::iterator i = hash.find(wxConstCast(s, wxString));
+ if ( i != hash.end() )
+ {
+ free(i->second);
+ hash.erase(i);
+ }
+}
+
+#if wxUSE_UNICODE
+// NB: non-STL implementation doesn't compile with "const wxString*" key type,
+// so we have to use wxString* here and const-cast when used
+WX_DECLARE_HASH_MAP(wxString*, char*, wxPointerHash, wxPointerEqual,
+ wxStringCharConversionCache);
+static wxStringCharConversionCache gs_stringsCharCache;
+
+const char* wxCStrData::AsChar() const
+{
+ // remove previously cache value, if any (see FIXMEs above):
+ DeleteStringFromConversionCache(gs_stringsCharCache, m_str);
+
+ // convert the string and keep it:
+ const char *s = gs_stringsCharCache[wxConstCast(m_str, wxString)] =
+ m_str->mb_str().release();
+
+ return s + m_offset;
+}
+#endif // wxUSE_UNICODE
+
+#if !wxUSE_UNICODE_WCHAR
+WX_DECLARE_HASH_MAP(wxString*, wchar_t*, wxPointerHash, wxPointerEqual,
+ wxStringWCharConversionCache);
+static wxStringWCharConversionCache gs_stringsWCharCache;
+
+const wchar_t* wxCStrData::AsWChar() const
+{
+ // remove previously cache value, if any (see FIXMEs above):
+ DeleteStringFromConversionCache(gs_stringsWCharCache, m_str);
+
+ // convert the string and keep it:
+ const wchar_t *s = gs_stringsWCharCache[wxConstCast(m_str, wxString)] =
+ m_str->wc_str().release();
+
+ return s + m_offset;
+}
+#endif // !wxUSE_UNICODE_WCHAR
+
+wxString::~wxString()
+{
+#if wxUSE_UNICODE
+ // FIXME-UTF8: do this only if locale is not UTF8 if wxUSE_UNICODE_UTF8
+ DeleteStringFromConversionCache(gs_stringsCharCache, this);
+#endif
+#if !wxUSE_UNICODE_WCHAR
+ DeleteStringFromConversionCache(gs_stringsWCharCache, this);
+#endif
+}
+#endif
+
+// ===========================================================================
+// wxString class core
+// ===========================================================================
+
// ---------------------------------------------------------------------------
// construction and conversion
// ---------------------------------------------------------------------------
-#if wxUSE_UNICODE
+#if wxUSE_UNICODE_WCHAR
/* static */
wxString::SubstrBufFromMB wxString::ConvertStr(const char *psz, size_t nLength,
- const wxMBConv& conv)
+ const wxMBConv& conv)
{
// anything to do?
if ( !psz || nLength == 0 )
- return SubstrBufFromMB();
+ return SubstrBufFromMB(wxWCharBuffer(L""), 0);
if ( nLength == npos )
nLength = wxNO_LEN;
size_t wcLen;
- wxWCharBuffer wcBuf(conv.cMB2WC(psz, nLength, &wcLen));
+ wxScopedWCharBuffer wcBuf(conv.cMB2WC(psz, nLength, &wcLen));
if ( !wcLen )
- return SubstrBufFromMB();
+ return SubstrBufFromMB(wxWCharBuffer(L""), 0);
else
return SubstrBufFromMB(wcBuf, wcLen);
}
-#else
+#endif // wxUSE_UNICODE_WCHAR
+
+#if wxUSE_UNICODE_UTF8
+/* static */
+wxString::SubstrBufFromMB wxString::ConvertStr(const char *psz, size_t nLength,
+ const wxMBConv& conv)
+{
+ // anything to do?
+ if ( !psz || nLength == 0 )
+ return SubstrBufFromMB(wxCharBuffer(""), 0);
+
+ // if psz is already in UTF-8, we don't have to do the roundtrip to
+ // wchar_t* and back:
+ if ( conv.IsUTF8() )
+ {
+ // we need to validate the input because UTF8 iterators assume valid
+ // UTF-8 sequence and psz may be invalid:
+ if ( wxStringOperations::IsValidUtf8String(psz, nLength) )
+ {
+ // we must pass the real string length to SubstrBufFromMB ctor
+ if ( nLength == npos )
+ nLength = psz ? strlen(psz) : 0;
+ return SubstrBufFromMB(wxScopedCharBuffer::CreateNonOwned(psz, nLength),
+ nLength);
+ }
+ // else: do the roundtrip through wchar_t*
+ }
+
+ if ( nLength == npos )
+ nLength = wxNO_LEN;
+
+ // first convert to wide string:
+ size_t wcLen;
+ wxScopedWCharBuffer wcBuf(conv.cMB2WC(psz, nLength, &wcLen));
+ if ( !wcLen )
+ return SubstrBufFromMB(wxCharBuffer(""), 0);
+
+ // and then to UTF-8:
+ SubstrBufFromMB buf(ConvertStr(wcBuf, wcLen, wxMBConvStrictUTF8()));
+ // widechar -> UTF-8 conversion isn't supposed to ever fail:
+ wxASSERT_MSG( buf.data, wxT("conversion to UTF-8 failed") );
+
+ return buf;
+}
+#endif // wxUSE_UNICODE_UTF8
+
+#if wxUSE_UNICODE_UTF8 || !wxUSE_UNICODE
/* static */
wxString::SubstrBufFromWC wxString::ConvertStr(const wchar_t *pwz, size_t nLength,
- const wxMBConv& conv)
+ const wxMBConv& conv)
{
// anything to do?
if ( !pwz || nLength == 0 )
- return SubstrBufFromWC();
+ return SubstrBufFromWC(wxCharBuffer(""), 0);
if ( nLength == npos )
nLength = wxNO_LEN;
size_t mbLen;
- wxCharBuffer mbBuf(conv.cWC2MB(pwz, nLength, &mbLen));
+ wxScopedCharBuffer mbBuf(conv.cWC2MB(pwz, nLength, &mbLen));
if ( !mbLen )
- return SubstrBufFromWC();
+ return SubstrBufFromWC(wxCharBuffer(""), 0);
else
return SubstrBufFromWC(mbBuf, mbLen);
}
-#endif
-
-
-#if wxUSE_UNICODE
-
-// from multibyte string
-wxString::wxString(const char *psz, const wxMBConv& conv, size_t nLength)
-{
- // FIXME-UTF8: this will need changes
-
- // anything to do?
- if ( psz && nLength != 0 )
+#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
+
+const wchar_t *wxString::AsWChar(const wxMBConv& conv) const
+{
+ const char * const strMB = m_impl.c_str();
+ const size_t lenMB = m_impl.length();
+
+ // find out the size of the buffer needed
+ const size_t lenWC = conv.ToWChar(NULL, 0, strMB, lenMB);
+ if ( lenWC == wxCONV_FAILED )
+ return 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 ( nLength == npos )
- {
- nLength = wxNO_LEN;
- }
-
- size_t nLenWide;
- wxWCharBuffer wbuf = conv.cMB2WC(psz, nLength, &nLenWide);
-
- if ( nLenWide )
- assign(wbuf, nLenWide);
+ if ( !const_cast<wxString *>(this)->m_convertedToWChar.Extend(lenWC) )
+ return NULL;
}
-}
-wxString::wxString(const char *psz, size_t nLength)
-{
- assign(psz, nLength);
-}
+ // finally do convert
+ m_convertedToWChar.m_str[lenWC] = L'\0';
+ if ( conv.ToWChar(m_convertedToWChar.m_str, lenWC,
+ strMB, lenMB) == wxCONV_FAILED )
+ return NULL;
-//Convert wxString in Unicode mode to a multi-byte string
-const wxCharBuffer wxString::mb_str(const wxMBConv& conv) const
-{
- return conv.cWC2MB(c_str(), length() + 1 /* size, not length */, NULL);
+ return m_convertedToWChar.m_str;
}
-#else // ANSI
+#endif // !wxUSE_UNICODE_WCHAR
+
-#if wxUSE_WCHAR_T
+// 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
-// from wide string
-wxString::wxString(const wchar_t *pwz, const wxMBConv& conv, size_t nLength)
+const char *wxString::AsChar(const wxMBConv& conv) const
{
- // FIXME-UTF8: this will need changes
+#if wxUSE_UNICODE_UTF8
+ if ( conv.IsUTF8() )
+ return m_impl.c_str();
- // anything to do?
- if ( pwz && nLength != 0 )
- {
- if ( nLength == npos )
- {
- nLength = wxNO_LEN;
- }
+ 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
- size_t nLenMB;
- wxCharBuffer buf = conv.cWC2MB(pwz, nLength, &nLenMB);
+ const size_t lenMB = conv.FromWChar(NULL, 0, strWC, lenWC);
+ if ( lenMB == wxCONV_FAILED )
+ return NULL;
- if ( nLenMB )
- assign(buf, nLenMB);
+ if ( !m_convertedToChar.m_str || lenMB != m_convertedToChar.m_len )
+ {
+ if ( !const_cast<wxString *>(this)->m_convertedToChar.Extend(lenMB) )
+ return NULL;
}
-}
-
-wxString::wxString(const wchar_t *pwz, size_t nLength)
-{
- assign(pwz, nLength);
-}
+ m_convertedToChar.m_str[lenMB] = '\0';
+ if ( conv.FromWChar(m_convertedToChar.m_str, lenMB,
+ strWC, lenWC) == wxCONV_FAILED )
+ return NULL;
-//Converts this string to a wide character string if unicode
-//mode is not enabled and wxUSE_WCHAR_T is enabled
-const wxWCharBuffer wxString::wc_str(const wxMBConv& conv) const
-{
- return conv.cMB2WC(c_str(), length() + 1 /* size, not length */, NULL);
+ return m_convertedToChar.m_str;
}
-#endif // wxUSE_WCHAR_T
-
-#endif // Unicode/ANSI
+#endif // wxUSE_UNICODE
// shrink to minimal size (releasing extra memory)
bool wxString::Shrink()
// deprecated compatibility code:
#if WXWIN_COMPATIBILITY_2_8 && !wxUSE_STL_BASED_WXSTRING && !wxUSE_UNICODE_UTF8
-wxChar *wxString::GetWriteBuf(size_t nLen)
+wxStringCharType *wxString::GetWriteBuf(size_t nLen)
{
return DoGetWriteBuf(nLen);
}
// all functions are inline in string.h
// ---------------------------------------------------------------------------
-// assignment operators
+// concatenation operators
// ---------------------------------------------------------------------------
-#if !wxUSE_UNICODE
-
-// same as 'signed char' variant
-wxString& wxString::operator=(const unsigned char* psz)
-{
- *this = (const char *)psz;
- return *this;
-}
-
-#if wxUSE_WCHAR_T
-wxString& wxString::operator=(const wchar_t *pwz)
-{
- wxString str(pwz);
- swap(str);
- return *this;
-}
-#endif
-
-#endif
-
/*
* concatenation functions come in 5 flavours:
* string + string
wxString s;
if ( !s.Alloc(strlen(psz) + str.length()) ) {
- wxFAIL_MSG( _T("out of memory in wxString::operator+") );
+ wxFAIL_MSG( wxT("out of memory in wxString::operator+") );
}
s += str;
s += psz;
wxString s;
if ( !s.Alloc(wxWcslen(pwz) + str.length()) ) {
- wxFAIL_MSG( _T("out of memory in wxString::operator+") );
+ wxFAIL_MSG( wxT("out of memory in wxString::operator+") );
}
s += str;
s += pwz;
wxString s;
if ( !s.Alloc(strlen(psz) + str.length()) ) {
- wxFAIL_MSG( _T("out of memory in wxString::operator+") );
+ wxFAIL_MSG( wxT("out of memory in wxString::operator+") );
}
s = psz;
s += str;
wxString s;
if ( !s.Alloc(wxWcslen(pwz) + str.length()) ) {
- wxFAIL_MSG( _T("out of memory in wxString::operator+") );
+ wxFAIL_MSG( wxT("out of memory in wxString::operator+") );
}
s = pwz;
s += str;
// string comparison
// ---------------------------------------------------------------------------
+bool wxString::IsSameAs(wxUniChar c, bool compareWithCase) const
+{
+ return (length() == 1) && (compareWithCase ? GetChar(0u) == c
+ : wxToupper(GetChar(0u)) == wxToupper(c));
+}
+
#ifdef HAVE_STD_STRING_COMPARE
// NB: Comparison code (both if HAVE_STD_STRING_COMPARE and if not) works with
size_t wxString::find_first_of(const wxChar* sz, size_t nStart, size_t n) const
{
- wxASSERT_MSG( nStart <= length(), _T("invalid index") );
+ wxASSERT_MSG( nStart <= length(), wxT("invalid index") );
size_t idx = nStart;
for ( const_iterator i = begin() + nStart; i != end(); ++idx, ++i )
size_t wxString::find_first_not_of(const wxChar* sz, size_t nStart, size_t n) const
{
- wxASSERT_MSG( nStart <= length(), _T("invalid index") );
+ wxASSERT_MSG( nStart <= length(), wxT("invalid index") );
size_t idx = nStart;
for ( const_iterator i = begin() + nStart; i != end(); ++idx, ++i )
}
else
{
- wxASSERT_MSG( nStart <= len, _T("invalid index") );
+ wxASSERT_MSG( nStart <= len, wxT("invalid index") );
}
size_t idx = nStart;
}
else
{
- wxASSERT_MSG( nStart <= len, _T("invalid index") );
+ wxASSERT_MSG( nStart <= len, wxT("invalid index") );
}
size_t idx = nStart;
size_t wxString::find_first_not_of(wxUniChar ch, size_t nStart) const
{
- wxASSERT_MSG( nStart <= length(), _T("invalid index") );
+ wxASSERT_MSG( nStart <= length(), wxT("invalid index") );
size_t idx = nStart;
for ( const_iterator i = begin() + nStart; i != end(); ++idx, ++i )
}
else
{
- wxASSERT_MSG( nStart <= len, _T("invalid index") );
+ wxASSERT_MSG( nStart <= len, wxT("invalid index") );
}
size_t idx = nStart;
int wxString::CmpNoCase(const wxString& s) const
{
- // FIXME-UTF8: use wxUniChar::ToLower/ToUpper once added
+#if defined(__WXMSW__) && !wxUSE_UNICODE_UTF8
+ // Prefer to use CompareString() if available as it's more efficient than
+ // doing it manually or even using wxStricmp() (see #10375)
+ //
+ // Also note that not using NORM_STRINGSORT may result in not having a
+ // strict weak ordering (e.g. s1 < s2 and s2 < s3 but s3 < s1) and so break
+ // algorithms such as std::sort that rely on it. It's also more consistent
+ // with the fall back version below.
+ switch ( ::CompareString(LOCALE_USER_DEFAULT,
+ NORM_IGNORECASE | SORT_STRINGSORT,
+ m_impl.c_str(), m_impl.length(),
+ s.m_impl.c_str(), s.m_impl.length()) )
+ {
+ case CSTR_LESS_THAN:
+ return -1;
+
+ case CSTR_EQUAL:
+ return 0;
- size_t idx = 0;
+ case CSTR_GREATER_THAN:
+ return 1;
+
+ default:
+ wxFAIL_MSG( "unexpected CompareString() return value" );
+ // fall through
+
+ case 0:
+ wxLogLastError("CompareString");
+ // use generic code below
+ }
+#endif // __WXMSW__ && !wxUSE_UNICODE_UTF8
+
+ // do the comparison manually: notice that we can't use wxStricmp() as it
+ // doesn't handle embedded NULs
+
+ // FIXME-UTF8: use wxUniChar::ToLower/ToUpper once added
const_iterator i1 = begin();
const_iterator end1 = end();
const_iterator i2 = s.begin();
const_iterator end2 = s.end();
- for ( ; i1 != end1 && i2 != end2; ++idx, ++i1, ++i2 )
+ for ( ; i1 != end1 && i2 != end2; ++i1, ++i2 )
{
wxUniChar lower1 = (wxChar)wxTolower(*i1);
wxUniChar lower2 = (wxChar)wxTolower(*i2);
#endif
#endif
-wxString wxString::FromAscii(const char *ascii)
+wxString wxString::FromAscii(const char *ascii, size_t len)
{
- if (!ascii)
+ if (!ascii || len == 0)
return wxEmptyString;
- size_t len = strlen( ascii );
wxString res;
- if ( len )
{
- wxStringBuffer buf(res, len);
-
- wchar_t *dest = buf;
+ wxStringInternalBuffer buf(res, len);
+ wxStringCharType *dest = buf;
- for ( ;; )
+ for ( ; len > 0; --len )
{
- if ( (*dest++ = (wchar_t)(unsigned char)*ascii++) == L'\0' )
- break;
+ unsigned char c = (unsigned char)*ascii++;
+ wxASSERT_MSG( c < 0x80,
+ wxT("Non-ASCII value passed to FromAscii().") );
+
+ *dest++ = (wchar_t)c;
}
}
return res;
}
-wxString wxString::FromAscii(const char ascii)
+wxString wxString::FromAscii(const char *ascii)
+{
+ return FromAscii(ascii, wxStrlen(ascii));
+}
+
+wxString wxString::FromAscii(char ascii)
{
// What do we do with '\0' ?
- wxString res;
- res += (wchar_t)(unsigned char) ascii;
+ unsigned char c = (unsigned char)ascii;
- return res;
+ wxASSERT_MSG( c < 0x80, wxT("Non-ASCII value passed to FromAscii().") );
+
+ // NB: the cast to wchar_t causes interpretation of 'ascii' as Latin1 value
+ return wxString(wxUniChar((wchar_t)c));
}
-const wxCharBuffer wxString::ToAscii() const
+const wxScopedCharBuffer wxString::ToAscii() const
{
// this will allocate enough space for the terminating NUL too
wxCharBuffer buffer(length());
-
-
char *dest = buffer.data();
- const wchar_t *pwc = c_str();
- for ( ;; )
+ for ( const_iterator i = begin(); i != end(); ++i )
{
- *dest++ = (char)(*pwc > SCHAR_MAX ? wxT('_') : *pwc);
+ wxUniChar c(*i);
+ // FIXME-UTF8: unify substituted char ('_') with wxUniChar ('?')
+ *dest++ = c.IsAscii() ? (char)c : '_';
// the output string can't have embedded NULs anyhow, so we can safely
// stop at first of them even if we do have any
- if ( !*pwc++ )
+ if ( !c )
break;
}
return buffer;
}
-#endif // Unicode
+#endif // wxUSE_UNICODE
// extract string of length nCount starting at nFirst
wxString wxString::Mid(size_t nFirst, size_t nCount) const
wxString dest(*this, nFirst, nCount);
if ( dest.length() != nCount )
{
- wxFAIL_MSG( _T("out of memory in wxString::Mid") );
+ wxFAIL_MSG( wxT("out of memory in wxString::Mid") );
}
return dest;
// check that the string starts with prefix and return the rest of the string
// in the provided pointer if it is not NULL, otherwise return false
-bool wxString::StartsWith(const wxChar *prefix, wxString *rest) const
+bool wxString::StartsWith(const wxString& prefix, wxString *rest) const
{
- wxASSERT_MSG( prefix, _T("invalid parameter in wxString::StartsWith") );
-
- // first check if the beginning of the string matches the prefix: note
- // that we don't have to check that we don't run out of this string as
- // when we reach the terminating NUL, either prefix string ends too (and
- // then it's ok) or we break out of the loop because there is no match
- const wxChar *p = c_str();
- while ( *prefix )
- {
- if ( *prefix++ != *p++ )
- {
- // no match
- return false;
- }
- }
+ if ( compare(0, prefix.length(), prefix) != 0 )
+ return false;
if ( rest )
{
// put the rest of the string into provided pointer
- *rest = p;
+ rest->assign(*this, prefix.length(), npos);
}
return true;
// check that the string ends with suffix and return the rest of it in the
// provided pointer if it is not NULL, otherwise return false
-bool wxString::EndsWith(const wxChar *suffix, wxString *rest) const
+bool wxString::EndsWith(const wxString& suffix, wxString *rest) const
{
- wxASSERT_MSG( suffix, _T("invalid parameter in wxString::EndssWith") );
+ int start = length() - suffix.length();
- int start = length() - wxStrlen(suffix);
- if ( start < 0 || wxStrcmp(wx_str() + start, suffix) != 0 )
+ if ( start < 0 || compare(start, npos, suffix) != 0 )
return false;
if ( rest )
wxString dest(*this, length() - nCount, nCount);
if ( dest.length() != nCount ) {
- wxFAIL_MSG( _T("out of memory in wxString::Right") );
+ wxFAIL_MSG( wxT("out of memory in wxString::Right") );
}
return dest;
}
-// get all characters after the last occurence of ch
+// get all characters after the last occurrence of ch
// (returns the whole string if ch not found)
wxString wxString::AfterLast(wxUniChar ch) const
{
if ( iPos == wxNOT_FOUND )
str = *this;
else
- str = wx_str() + iPos + 1;
+ str.assign(*this, iPos + 1, npos);
return str;
}
wxString dest(*this, 0, nCount);
if ( dest.length() != nCount ) {
- wxFAIL_MSG( _T("out of memory in wxString::Left") );
+ wxFAIL_MSG( wxT("out of memory in wxString::Left") );
}
return dest;
}
-// get all characters before the first occurence of ch
+// get all characters before the first occurrence of ch
// (returns the whole string if ch not found)
wxString wxString::BeforeFirst(wxUniChar ch) const
{
int iPos = Find(ch);
- if ( iPos == wxNOT_FOUND ) iPos = length();
+ if ( iPos == wxNOT_FOUND )
+ iPos = length();
return wxString(*this, 0, iPos);
}
-/// get all characters before the last occurence of ch
+/// get all characters before the last occurrence of ch
/// (returns empty string if ch not found)
wxString wxString::BeforeLast(wxUniChar ch) const
{
return str;
}
-/// get all characters after the first occurence of ch
+/// get all characters after the first occurrence of ch
/// (returns empty string if ch not found)
wxString wxString::AfterFirst(wxUniChar ch) const
{
wxString str;
int iPos = Find(ch);
if ( iPos != wxNOT_FOUND )
- str = wx_str() + iPos + 1;
+ str.assign(*this, iPos + 1, npos);
return str;
}
-// replace first (or all) occurences of some substring with another one
-size_t wxString::Replace(const wxChar *szOld,
- const wxChar *szNew, bool bReplaceAll)
+// replace first (or all) occurrences of some substring with another one
+size_t wxString::Replace(const wxString& strOld,
+ const wxString& strNew, 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") );
+ wxCHECK_MSG( !strOld.empty(), 0,
+ wxT("wxString::Replace(): invalid parameter") );
+
+ wxSTRING_INVALIDATE_CACHE();
size_t uiCount = 0; // count of replacements made
- size_t uiOldLen = wxStrlen(szOld);
- size_t uiNewLen = wxStrlen(szNew);
+ // optimize the special common case: replacement of one character by
+ // another one (in UTF-8 case we can only do this for ASCII characters)
+ //
+ // benchmarks show that this special version is around 3 times faster
+ // (depending on the proportion of matching characters and UTF-8/wchar_t
+ // build)
+ if ( strOld.m_impl.length() == 1 && strNew.m_impl.length() == 1 )
+ {
+ const wxStringCharType chOld = strOld.m_impl[0],
+ chNew = strNew.m_impl[0];
+
+ // this loop is the simplified version of the one below
+ for ( size_t pos = 0; ; )
+ {
+ pos = m_impl.find(chOld, pos);
+ if ( pos == npos )
+ break;
+
+ m_impl[pos++] = chNew;
- size_t dwPos = 0;
+ uiCount++;
- while ( this->c_str()[dwPos] != wxT('\0') )
+ if ( !bReplaceAll )
+ break;
+ }
+ }
+ else if ( !bReplaceAll)
{
- //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
+ size_t pos = m_impl.find(strOld, 0);
+ if ( pos != npos )
{
- //replace this occurance of the old string with the new one
- replace(dwPos, uiOldLen, szNew, uiNewLen);
+ m_impl.replace(pos, strOld.m_impl.length(), strNew.m_impl);
+ uiCount = 1;
+ }
+ }
+ else // replace all occurrences
+ {
+ const size_t uiOldLen = strOld.m_impl.length();
+ const size_t uiNewLen = strNew.m_impl.length();
- //move up pos past the string that was replaced
- dwPos += uiNewLen;
+ // first scan the string to find all positions at which the replacement
+ // should be made
+ wxVector<size_t> replacePositions;
- //increase replace count
+ size_t pos;
+ for ( pos = m_impl.find(strOld.m_impl, 0);
+ pos != npos;
+ pos = m_impl.find(strOld.m_impl, pos + uiOldLen))
+ {
+ replacePositions.push_back(pos);
++uiCount;
+ }
- // stop now?
- if ( !bReplaceAll )
- break; // exit the loop
+ if ( !uiCount )
+ return 0;
+
+ // allocate enough memory for the whole new string
+ wxString tmp;
+ tmp.m_impl.reserve(m_impl.length() + uiCount*(uiNewLen - uiOldLen));
+
+ // copy this string to tmp doing replacements on the fly
+ size_t replNum = 0;
+ for ( pos = 0; replNum < uiCount; replNum++ )
+ {
+ const size_t nextReplPos = replacePositions[replNum];
+
+ if ( pos != nextReplPos )
+ {
+ tmp.m_impl.append(m_impl, pos, nextReplPos - pos);
+ }
+
+ tmp.m_impl.append(strNew.m_impl);
+ pos = nextReplPos + uiOldLen;
}
+
+ if ( pos != m_impl.length() )
+ {
+ // append the rest of the string unchanged
+ tmp.m_impl.append(m_impl, pos, m_impl.length() - pos);
+ }
+
+ swap(tmp);
}
return uiCount;
bool wxString::IsAscii() const
{
- const wxChar *s = (const wxChar*) *this;
- while(*s){
- if(!isascii(*s)) return(false);
- s++;
- }
- return(true);
+ for ( const_iterator i = begin(); i != end(); ++i )
+ {
+ if ( !(*i).IsAscii() )
+ return false;
+ }
+
+ return true;
}
bool wxString::IsWord() const
{
- const wxChar *s = (const wxChar*) *this;
- while(*s){
- if(!wxIsalpha(*s)) return(false);
- s++;
- }
- return(true);
+ for ( const_iterator i = begin(); i != end(); ++i )
+ {
+ if ( !wxIsalpha(*i) )
+ return false;
+ }
+
+ return true;
}
bool wxString::IsNumber() const
{
- const wxChar *s = (const wxChar*) *this;
- if (wxStrlen(s))
- if ((s[0] == wxT('-')) || (s[0] == wxT('+'))) s++;
- while(*s){
- if(!wxIsdigit(*s)) return(false);
- s++;
- }
- return(true);
+ if ( empty() )
+ return true;
+
+ const_iterator i = begin();
+
+ if ( *i == wxT('-') || *i == wxT('+') )
+ ++i;
+
+ for ( ; i != end(); ++i )
+ {
+ if ( !wxIsdigit(*i) )
+ return false;
+ }
+
+ return true;
}
wxString wxString::Strip(stripType w) const
return *this;
}
+wxString& wxString::MakeCapitalized()
+{
+ const iterator en = end();
+ iterator it = begin();
+ if ( it != en )
+ {
+ *it = (wxChar)wxToupper(*it);
+ for ( ++it; it != en; ++it )
+ *it = (wxChar)wxTolower(*it);
+ }
+
+ return *this;
+}
+
// ---------------------------------------------------------------------------
// trimming and padding
// ---------------------------------------------------------------------------
// some compilers (VC++ 6.0 not to name them) return true for a call to
-// isspace('ê') in the C locale which seems to be broken to me, but we have to
-// live with this by checking that the character is a 7 bit one - even if this
-// may fail to detect some spaces (I don't know if Unicode doesn't have
+// isspace('\xEA') in the C locale which seems to be broken to me, but we have
+// to live with this by checking that the character is a 7 bit one - even if
+// this may fail to detect some spaces (I don't know if Unicode doesn't have
// space-like symbols somewhere except in the first 128 chars), it is arguably
// still better than trimming away accented letters
inline int wxSafeIsspace(wxChar ch) { return (ch < 127) && wxIsspace(ch); }
// find last non-space character
reverse_iterator psz = rbegin();
while ( (psz != rend()) && wxSafeIsspace(*psz) )
- psz++;
+ ++psz;
// truncate at trailing space start
erase(psz.base(), end());
// find first non-space character
iterator psz = begin();
while ( (psz != end()) && wxSafeIsspace(*psz) )
- psz++;
+ ++psz;
// fix up data and length
erase(begin(), psz);
return (idx == npos) ? wxNOT_FOUND : (int)idx;
}
-// find a sub-string (like strstr)
-int wxString::Find(const wxChar *pszSub) const
-{
- size_type idx = find(pszSub);
-
- return (idx == npos) ? wxNOT_FOUND : (int)idx;
-}
-
// ----------------------------------------------------------------------------
// conversion to numbers
// ----------------------------------------------------------------------------
-// the implementation of all the functions below is exactly the same so factor
-// it out
-
-template <typename T, typename F>
-bool wxStringToIntType(const wxChar *start,
- T *val,
- int base,
- F func)
-{
- wxCHECK_MSG( val, false, _T("NULL output pointer") );
- wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid base") );
+// The implementation of all the functions below is exactly the same so factor
+// it out. Note that number extraction works correctly on UTF-8 strings, so
+// we can use wxStringCharType and wx_str() for maximum efficiency.
#ifndef __WXWINCE__
- errno = 0;
+ #define DO_IF_NOT_WINCE(x) x
+#else
+ #define DO_IF_NOT_WINCE(x)
#endif
- wxChar *end;
- *val = (*func)(start, &end, base);
+#define WX_STRING_TO_X_TYPE_START \
+ wxCHECK_MSG( pVal, false, wxT("NULL output pointer") ); \
+ DO_IF_NOT_WINCE( errno = 0; ) \
+ const wxStringCharType *start = wx_str(); \
+ wxStringCharType *end;
- // return true only if scan was stopped by the terminating NUL and if the
- // string was not empty to start with and no under/overflow occurred
- return !*end && (end != start)
-#ifndef __WXWINCE__
- && (errno != ERANGE)
-#endif
- ;
+// notice that we return false without modifying the output parameter at all if
+// nothing could be parsed but we do modify it and return false then if we did
+// parse something successfully but not the entire string
+#define WX_STRING_TO_X_TYPE_END \
+ if ( end == start DO_IF_NOT_WINCE(|| errno == ERANGE) ) \
+ return false; \
+ *pVal = val; \
+ return !*end;
+
+bool wxString::ToLong(long *pVal, int base) const
+{
+ wxASSERT_MSG( !base || (base > 1 && base <= 36), wxT("invalid base") );
+
+ WX_STRING_TO_X_TYPE_START
+ long val = wxStrtol(start, &end, base);
+ WX_STRING_TO_X_TYPE_END
}
-bool wxString::ToLong(long *val, int base) const
+bool wxString::ToULong(unsigned long *pVal, int base) const
{
- return wxStringToIntType((const wxChar*)c_str(), val, base, wxStrtol);
+ wxASSERT_MSG( !base || (base > 1 && base <= 36), wxT("invalid base") );
+
+ WX_STRING_TO_X_TYPE_START
+ unsigned long val = wxStrtoul(start, &end, base);
+ WX_STRING_TO_X_TYPE_END
}
-bool wxString::ToULong(unsigned long *val, int base) const
+bool wxString::ToLongLong(wxLongLong_t *pVal, int base) const
{
- return wxStringToIntType((const wxChar*)c_str(), val, base, wxStrtoul);
+ wxASSERT_MSG( !base || (base > 1 && base <= 36), wxT("invalid base") );
+
+ WX_STRING_TO_X_TYPE_START
+ wxLongLong_t val = wxStrtoll(start, &end, base);
+ WX_STRING_TO_X_TYPE_END
}
-bool wxString::ToLongLong(wxLongLong_t *val, int base) const
+bool wxString::ToULongLong(wxULongLong_t *pVal, int base) const
{
-#ifdef wxHAS_STRTOLL
- return wxStringToIntType((const wxChar*)c_str(), val, base, wxStrtoll);
-#else
- // TODO: implement this ourselves
- wxUnusedVar(val);
- wxUnusedVar(base);
- return false;
-#endif // wxHAS_STRTOLL
+ wxASSERT_MSG( !base || (base > 1 && base <= 36), wxT("invalid base") );
+
+ WX_STRING_TO_X_TYPE_START
+ wxULongLong_t val = wxStrtoull(start, &end, base);
+ WX_STRING_TO_X_TYPE_END
}
-bool wxString::ToULongLong(wxULongLong_t *val, int base) const
+bool wxString::ToDouble(double *pVal) const
{
-#ifdef wxHAS_STRTOLL
- return wxStringToIntType((const wxChar*)c_str(), val, base, wxStrtoull);
+ WX_STRING_TO_X_TYPE_START
+ double val = wxStrtod(start, &end);
+ WX_STRING_TO_X_TYPE_END
+}
+
+#if wxUSE_XLOCALE
+
+bool wxString::ToCLong(long *pVal, int base) const
+{
+ wxASSERT_MSG( !base || (base > 1 && base <= 36), wxT("invalid base") );
+
+ WX_STRING_TO_X_TYPE_START
+#if (wxUSE_UNICODE_UTF8 || !wxUSE_UNICODE) && defined(wxHAS_XLOCALE_SUPPORT)
+ long val = wxStrtol_lA(start, &end, base, wxCLocale);
#else
- // TODO: implement this ourselves
- wxUnusedVar(val);
- wxUnusedVar(base);
- return false;
+ long val = wxStrtol_l(start, &end, base, wxCLocale);
#endif
+ WX_STRING_TO_X_TYPE_END
}
-bool wxString::ToDouble(double *val) const
+bool wxString::ToCULong(unsigned long *pVal, int base) const
{
- wxCHECK_MSG( val, false, _T("NULL pointer in wxString::ToDouble") );
+ wxASSERT_MSG( !base || (base > 1 && base <= 36), wxT("invalid base") );
-#ifndef __WXWINCE__
- errno = 0;
+ WX_STRING_TO_X_TYPE_START
+#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);
#endif
+ WX_STRING_TO_X_TYPE_END
+}
- const wxChar *start = c_str();
- wxChar *end;
- *val = wxStrtod(start, &end);
-
- // return true only if scan was stopped by the terminating NUL and if the
- // string was not empty to start with and no under/overflow occurred
- return !*end && (end != start)
-#ifndef __WXWINCE__
- && (errno != ERANGE)
+bool wxString::ToCDouble(double *pVal) const
+{
+ WX_STRING_TO_X_TYPE_START
+#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);
#endif
- ;
+ WX_STRING_TO_X_TYPE_END
}
+#endif // wxUSE_XLOCALE
+
// ---------------------------------------------------------------------------
// formatted output
// ---------------------------------------------------------------------------
+#if !wxUSE_UTF8_LOCALE_ONLY
/* static */
#ifdef wxNEEDS_WXSTRING_PRINTF_MIXIN
-wxString wxStringPrintfMixinBase::DoFormat(const wxChar *format, ...)
+wxString wxStringPrintfMixinBase::DoFormatWchar(const wxChar *format, ...)
#else
-wxString wxString::DoFormat(const wxChar *format, ...)
+wxString wxString::DoFormatWchar(const wxChar *format, ...)
#endif
{
va_list argptr;
return s;
}
+#endif // !wxUSE_UTF8_LOCALE_ONLY
+
+#if wxUSE_UNICODE_UTF8
+/* static */
+wxString wxString::DoFormatUtf8(const char *format, ...)
+{
+ va_list argptr;
+ va_start(argptr, format);
+
+ wxString s;
+ s.PrintfV(format, argptr);
+
+ va_end(argptr);
+
+ return s;
+}
+#endif // wxUSE_UNICODE_UTF8
/* static */
wxString wxString::FormatV(const wxString& format, va_list argptr)
return s;
}
+#if !wxUSE_UTF8_LOCALE_ONLY
#ifdef wxNEEDS_WXSTRING_PRINTF_MIXIN
-int wxStringPrintfMixinBase::DoPrintf(const wxChar *format, ...)
+int wxStringPrintfMixinBase::DoPrintfWchar(const wxChar *format, ...)
#else
-int wxString::DoPrintf(const wxChar *format, ...)
+int wxString::DoPrintfWchar(const wxChar *format, ...)
#endif
{
va_list argptr;
return iLen;
}
+#endif // !wxUSE_UTF8_LOCALE_ONLY
-int wxString::PrintfV(const wxString& format, va_list argptr)
+#if wxUSE_UNICODE_UTF8
+int wxString::DoPrintfUtf8(const char *format, ...)
+{
+ va_list argptr;
+ va_start(argptr, format);
+
+ int iLen = PrintfV(format, argptr);
+
+ va_end(argptr);
+
+ return iLen;
+}
+#endif // wxUSE_UNICODE_UTF8
+
+/*
+ Uses wxVsnprintf and places the result into the this string.
+
+ In ANSI build, wxVsnprintf is effectively vsnprintf but in Unicode build
+ it is vswprintf. Due to a discrepancy between vsnprintf and vswprintf in
+ the ISO C99 (and thus SUSv3) standard the return value for the case of
+ an undersized buffer is inconsistent. For conforming vsnprintf
+ implementations the function must return the number of characters that
+ would have been printed had the buffer been large enough. For conforming
+ vswprintf implementations the function must return a negative number
+ and set errno.
+
+ What vswprintf sets errno to is undefined but Darwin seems to set it to
+ EOVERFLOW. The only expected errno are EILSEQ and EINVAL. Both of
+ those are defined in the standard and backed up by several conformance
+ statements. Note that ENOMEM mentioned in the manual page does not
+ apply to swprintf, only wprintf and fwprintf.
+
+ Official manual page:
+ http://www.opengroup.org/onlinepubs/009695399/functions/swprintf.html
+
+ Some conformance statements (AIX, Solaris):
+ http://www.opengroup.org/csq/view.mhtml?RID=ibm%2FSD1%2F3
+ http://www.theopengroup.org/csq/view.mhtml?norationale=1&noreferences=1&RID=Fujitsu%2FSE2%2F10
+
+ Since EILSEQ and EINVAL are rather common but EOVERFLOW is not and since
+ EILSEQ and EINVAL are specifically defined to mean the error is other than
+ an undersized buffer and no other errno are defined we treat those two
+ as meaning hard errors and everything else gets the old behavior which
+ is to keep looping and increasing buffer size until the function succeeds.
+
+ In practice it's impossible to determine before compilation which behavior
+ may be used. The vswprintf function may have vsnprintf-like behavior or
+ vice-versa. Behavior detected on one release can theoretically change
+ with an updated release. Not to mention that configure testing for it
+ would require the test to be run on the host system, not the build system
+ which makes cross compilation difficult. Therefore, we make no assumptions
+ about behavior and try our best to handle every known case, including the
+ case where wxVsnprintf returns a negative number and fails to set errno.
+
+ There is yet one more non-standard implementation and that is our own.
+ Fortunately, that can be detected at compile-time.
+
+ On top of all that, ISO C99 explicitly defines snprintf to write a null
+ character to the last position of the specified buffer. That would be at
+ at the given buffer size minus 1. It is supposed to do this even if it
+ turns out that the buffer is sized too small.
+
+ Darwin (tested on 10.5) follows the C99 behavior exactly.
+
+ Glibc 2.6 almost follows the C99 behavior except vswprintf never sets
+ errno even when it fails. However, it only seems to ever fail due
+ to an undersized buffer.
+*/
+#if wxUSE_UNICODE_UTF8
+template<typename BufferType>
+#else
+// we only need one version in non-UTF8 builds and at least two Windows
+// compilers have problems with this function template, so use just one
+// normal function here
+#endif
+static int DoStringPrintfV(wxString& str,
+ const wxString& format, va_list argptr)
{
int size = 1024;
for ( ;; )
{
- wxStringBuffer tmp(*this, size + 1);
+#if wxUSE_UNICODE_UTF8
+ BufferType tmp(str, size + 1);
+ typename BufferType::CharType *buf = tmp;
+#else
+ wxStringBuffer tmp(str, size + 1);
wxChar *buf = tmp;
+#endif
if ( !buf )
{
// out of memory
+
+ // in UTF-8 build, leaving uninitialized junk in the buffer
+ // could result in invalid non-empty UTF-8 string, so just
+ // reset the string to empty on failure:
+ buf[0] = '\0';
return -1;
}
// only a copy
va_list argptrcopy;
wxVaCopy(argptrcopy, argptr);
+
+#ifndef __WXWINCE__
+ // Set errno to 0 to make it determinate if wxVsnprintf fails to set it.
+ errno = 0;
+#endif
int len = wxVsnprintf(buf, size, format, 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');
+ // FIXME: This really seems to be the wrong and would be an off-by-one
+ // bug except the code above allocates an extra character.
+ buf[size] = wxT('\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 (newer standards such as Unix98)
if ( len < 0 )
{
+ // NB: wxVsnprintf() may call either wxCRT_VsnprintfW or
+ // wxCRT_VsnprintfA in UTF-8 build; wxUSE_WXVSNPRINTF
+ // is true if *both* of them use our own implementation,
+ // otherwise we can't be sure
#if wxUSE_WXVSNPRINTF
// we know that our own implementation of wxVsnprintf() returns -1
// only for a format error - thus there's something wrong with
// the user's format string
+ buf[0] = '\0';
return -1;
-#else // assume that system version only returns error if not enough space
+#else // possibly using system version
+ // assume it only returns error if there is not enough space, but
+ // as we don't know how much we need, double the current size of
+ // the buffer
+#ifndef __WXWINCE__
+ if( (errno == EILSEQ) || (errno == EINVAL) )
+ // If errno was set to one of the two well-known hard errors
+ // then fail immediately to avoid an infinite loop.
+ return -1;
+ else
+#endif // __WXWINCE__
// still not enough, as we don't know how much we need, double the
// current size of the buffer
- size *= 2;
+ size *= 2;
#endif // wxUSE_WXVSNPRINTF/!wxUSE_WXVSNPRINTF
}
else if ( len >= size )
{
#if wxUSE_WXVSNPRINTF
- // we know that our own implementation of wxVsnprintf() returns
+ // we know that our own implementation of wxVsnprintf() returns
// size+1 when there's not enough space but that's not the size
// of the required buffer!
size *= 2; // so we just double the current size of the buffer
#else
// some vsnprintf() implementations NUL-terminate the buffer and
// some don't in len == size case, to be safe always add 1
+ // FIXME: I don't quite understand this comment. The vsnprintf
+ // function is specifically defined to return the number of
+ // characters printed not including the null terminator.
+ // So OF COURSE you need to add 1 to get the right buffer size.
+ // The following line is definitely correct, no question.
size = len + 1;
#endif
}
}
// we could have overshot
- Shrink();
+ str.Shrink();
+
+ return str.length();
+}
+
+int wxString::PrintfV(const wxString& format, va_list argptr)
+{
+#if wxUSE_UNICODE_UTF8
+ #if wxUSE_STL_BASED_WXSTRING
+ typedef wxStringTypeBuffer<char> Utf8Buffer;
+ #else
+ typedef wxStringInternalBuffer Utf8Buffer;
+ #endif
+#endif
- return length();
+#if wxUSE_UTF8_LOCALE_ONLY
+ return DoStringPrintfV<Utf8Buffer>(*this, format, argptr);
+#else
+ #if wxUSE_UNICODE_UTF8
+ if ( wxLocaleIsUtf8 )
+ return DoStringPrintfV<Utf8Buffer>(*this, format, argptr);
+ else
+ // wxChar* version
+ return DoStringPrintfV<wxStringBuffer>(*this, format, argptr);
+ #else
+ return DoStringPrintfV(*this, format, argptr);
+ #endif // UTF8/WCHAR
+#endif
}
// ----------------------------------------------------------------------------
// returns true if the string matches the pattern which may contain '*' and
// '?' metacharacters (as usual, '?' matches any character and '*' any number
// of them)
-bool wxString::Matches(const wxChar *pszMask) const
+bool wxString::Matches(const wxString& mask) const
{
// I disable this code as it doesn't seem to be faster (in fact, it seems
// to be much slower) than the old, hand-written code below and using it
wxString pattern;
pattern.reserve(wxStrlen(pszMask));
- pattern += _T('^');
+ pattern += wxT('^');
while ( *pszMask )
{
switch ( *pszMask )
{
- case _T('?'):
- pattern += _T('.');
+ case wxT('?'):
+ pattern += wxT('.');
break;
- case _T('*'):
- pattern += _T(".*");
+ case wxT('*'):
+ pattern += wxT(".*");
break;
- case _T('^'):
- case _T('.'):
- case _T('$'):
- case _T('('):
- case _T(')'):
- case _T('|'):
- case _T('+'):
- case _T('\\'):
+ case wxT('^'):
+ case wxT('.'):
+ case wxT('$'):
+ case wxT('('):
+ case wxT(')'):
+ case wxT('|'):
+ case wxT('+'):
+ case wxT('\\'):
// these characters are special in a RE, quote them
// (however note that we don't quote '[' and ']' to allow
// using them for Unix shell like matching)
- pattern += _T('\\');
+ pattern += wxT('\\');
// fall through
default:
pszMask++;
}
- pattern += _T('$');
+ pattern += wxT('$');
// and now use it
return wxRegEx(pattern, wxRE_NOSUB | wxRE_EXTENDED).Matches(c_str());
#else // !wxUSE_REGEX
// TODO: this is, of course, awfully inefficient...
+ // FIXME-UTF8: implement using iterators, remove #if
+#if wxUSE_UNICODE_UTF8
+ const wxScopedWCharBuffer maskBuf = mask.wc_str();
+ const wxScopedWCharBuffer txtBuf = wc_str();
+ const wxChar *pszMask = maskBuf.data();
+ const wxChar *pszTxt = txtBuf.data();
+#else
+ const wxChar *pszMask = mask.wx_str();
// the char currently being checked
- const wxChar *pszTxt = c_str();
+ const wxChar *pszTxt = wx_str();
+#endif
// the last location where '*' matched
const wxChar *pszLastStarInText = NULL;
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(); }
-
projects / wxWidgets.git / blobdiff