// Author: Vadim Zeitlin, Ryan Norton
// Modified by:
// Created: 29/01/98
-// RCS-ID: $Id$
// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// (c) 2004 Ryan Norton <wxprojects@comcast.net>
// Licence: wxWindows licence
#ifndef WX_PRECOMP
#include "wx/string.h"
#include "wx/wxcrtvararg.h"
+ #include "wx/intl.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 __WINDOWS__
+ #include "wx/msw/wrapwin.h"
+#endif // __WINDOWS__
+
+#if wxUSE_STD_IOSTREAM
+ #include <sstream>
+#endif
// 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
// ----------------------------------------------------------------------------
wxSTD ostream& operator<<(wxSTD ostream& os, const wxCStrData& str)
{
#if wxUSE_UNICODE && !wxUSE_UNICODE_UTF8
- return os << (const char *)str.AsCharBuf();
+ 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
return os << str.c_str();
}
-wxSTD ostream& operator<<(wxSTD ostream& os, const wxCharBuffer& str)
+wxSTD ostream& operator<<(wxSTD ostream& os, const wxScopedCharBuffer& str)
{
return os << str.data();
}
#ifndef __BORLANDC__
-wxSTD ostream& operator<<(wxSTD ostream& os, const wxWCharBuffer& str)
+wxSTD ostream& operator<<(wxSTD ostream& os, const wxScopedWCharBuffer& str)
{
return os << str.data();
}
return wos << str.AsWChar();
}
-wxSTD wostream& operator<<(wxSTD wostream& wos, const wxWCharBuffer& str)
+wxSTD wostream& operator<<(wxSTD wostream& wos, const wxScopedWCharBuffer& str)
{
return wos << str.data();
}
size_t *implPos, size_t *implLen) const
{
if ( pos == npos )
+ {
*implPos = npos;
- else
+ }
+ else // have valid start position
{
- const_iterator i = begin() + pos;
- *implPos = wxStringImpl::const_iterator(i.impl()) - m_impl.begin();
+ const const_iterator b = GetIterForNthChar(pos);
+ *implPos = wxStringImpl::const_iterator(b.impl()) - m_impl.begin();
if ( len == npos )
+ {
*implLen = npos;
- else
+ }
+ else // have valid length too
{
- // too large length is interpreted as "to the end of the string"
- // FIXME-UTF8: verify this is the case in std::string, assert
- // otherwise
- if ( pos + len > length() )
- len = length() - pos;
-
- *implLen = (i + len).impl() - i.impl();
+ // 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
-#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.
- wxCharBuffer 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:
- wxWCharBuffer 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
// ===========================================================================
{
// anything to do?
if ( !psz || nLength == 0 )
- return SubstrBufFromMB(L"", 0);
+ 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(_T(""), 0);
+ return SubstrBufFromMB(wxWCharBuffer(L""), 0);
else
return SubstrBufFromMB(wcBuf, wcLen);
}
{
// anything to do?
if ( !psz || nLength == 0 )
- return SubstrBufFromMB("", 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:
// UTF-8 sequence and psz may be invalid:
if ( wxStringOperations::IsValidUtf8String(psz, nLength) )
{
- return SubstrBufFromMB(wxCharBuffer::CreateNonOwned(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*
}
// first convert to wide string:
size_t wcLen;
- wxWCharBuffer wcBuf(conv.cMB2WC(psz, nLength, &wcLen));
+ wxScopedWCharBuffer wcBuf(conv.cMB2WC(psz, nLength, &wcLen));
if ( !wcLen )
- return SubstrBufFromMB("", 0);
+ 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, _T("conversion to UTF-8 failed") );
+ wxASSERT_MSG( buf.data, wxT("conversion to UTF-8 failed") );
return buf;
}
{
// anything to do?
if ( !pwz || nLength == 0 )
- return SubstrBufFromWC("", 0);
+ 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("", 0);
+ return SubstrBufFromWC(wxCharBuffer(""), 0);
else
return SubstrBufFromWC(mbBuf, mbLen);
}
#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 wxCharBuffer wxString::mb_str(const wxMBConv& conv) const
+const wchar_t *wxString::AsWChar(const wxMBConv& conv) const
{
- return conv.cWC2MB(wx_str(), length() + 1 /* size, not 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 wxWCharBuffer wxString::wc_str() const
-{
- return wxMBConvStrictUTF8().cMB2WC
- (
- m_impl.c_str(),
- m_impl.length() + 1, // size, not 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 wxCharBuffer 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 wxCharBuffer::CreateNonOwned(m_impl.c_str());
+ return m_impl.c_str();
- // FIXME-UTF8: use wc_str() here once we have buffers with length
+ 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 wcLen;
- wxWCharBuffer wcBuf(wxMBConvStrictUTF8().cMB2WC
- (
- m_impl.c_str(),
- m_impl.length() + 1, // size
- &wcLen
- ));
- if ( !wcLen )
- return wxCharBuffer("");
+ const size_t lenMB = conv.FromWChar(NULL, 0, strWC, lenWC);
+ if ( lenMB == wxCONV_FAILED )
+ return NULL;
- return conv.cWC2MB(wcBuf, wcLen+1, NULL);
-}
+ if ( !m_convertedToChar.m_str || lenMB != m_convertedToChar.m_len )
+ {
+ if ( !const_cast<wxString *>(this)->m_convertedToChar.Extend(lenMB) )
+ return NULL;
+ }
-#else // ANSI
+ 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(wx_str(), length() + 1 /* size, not length */, NULL);
+ return m_convertedToChar.m_str;
}
-#endif // Unicode/ANSI
+#endif // wxUSE_UNICODE
// shrink to minimal size (releasing extra memory)
bool wxString::Shrink()
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;
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 !wxUSE_UNICODE_UTF8
+ // We compare NUL-delimited chunks of the strings inside the loop. We will
+ // do as many iterations as there are embedded NULs in the string, i.e.
+ // usually we will run it just once.
+
+ typedef const wxStringImpl::value_type *pchar_type;
+ const pchar_type thisBegin = m_impl.c_str();
+ const pchar_type thatBegin = s.m_impl.c_str();
+
+ const pchar_type thisEnd = thisBegin + m_impl.length();
+ const pchar_type thatEnd = thatBegin + s.m_impl.length();
+
+ pchar_type thisCur = thisBegin;
+ pchar_type thatCur = thatBegin;
+
+ int rc;
+ for ( ;; )
+ {
+ // Compare until the next NUL, if the strings differ this is the final
+ // result.
+ rc = wxStricmp(thisCur, thatCur);
+ if ( rc )
+ break;
+
+ const size_t lenChunk = wxStrlen(thisCur);
+ thisCur += lenChunk;
+ thatCur += lenChunk;
+ // Skip all the NULs as wxStricmp() doesn't handle them.
+ for ( ; !*thisCur; thisCur++, thatCur++ )
+ {
+ // Check if we exhausted either of the strings.
+ if ( thisCur == thisEnd )
+ {
+ // This one is exhausted, is the other one too?
+ return thatCur == thatEnd ? 0 : -1;
+ }
+
+ if ( thatCur == thatEnd )
+ {
+ // Because of the test above we know that this one is not
+ // exhausted yet so it's greater than the other one that is.
+ return 1;
+ }
+
+ if ( *thatCur )
+ {
+ // Anything non-NUL is greater than NUL.
+ return -1;
+ }
+ }
+ }
+
+ return rc;
+#else // wxUSE_UNICODE_UTF8
+ // CRT functions can't be used for case-insensitive comparison of UTF-8
+ // strings so do it in the naive, simple and inefficient way.
+
+ // FIXME-UTF8: use wxUniChar::ToLower/ToUpper once added
const_iterator i1 = begin();
const_iterator end1 = end();
const_iterator i2 = s.begin();
else if ( len1 > len2 )
return 1;
return 0;
+#endif // !wxUSE_UNICODE_UTF8/wxUSE_UNICODE_UTF8
}
#if wxUSE_UNICODE
-#ifdef __MWERKS__
-#ifndef __SCHAR_MAX__
-#define __SCHAR_MAX__ 127
-#endif
-#endif
-
wxString wxString::FromAscii(const char *ascii, size_t len)
{
if (!ascii || len == 0)
{
unsigned char c = (unsigned char)*ascii++;
wxASSERT_MSG( c < 0x80,
- _T("Non-ASCII value passed to FromAscii().") );
+ wxT("Non-ASCII value passed to FromAscii().") );
*dest++ = (wchar_t)c;
}
unsigned char c = (unsigned char)ascii;
- wxASSERT_MSG( c < 0x80, _T("Non-ASCII value passed to FromAscii().") );
+ 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());
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;
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
+wxString wxString::BeforeFirst(wxUniChar ch, wxString *rest) const
{
int iPos = Find(ch);
- if ( iPos == wxNOT_FOUND ) iPos = length();
+ if ( iPos == wxNOT_FOUND )
+ {
+ iPos = length();
+ if ( rest )
+ rest->clear();
+ }
+ else
+ {
+ if ( rest )
+ rest->assign(*this, iPos + 1, npos);
+ }
+
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
+wxString wxString::BeforeLast(wxUniChar ch, wxString *rest) const
{
wxString str;
int iPos = Find(ch, true);
- if ( iPos != wxNOT_FOUND && iPos != 0 )
- str = wxString(c_str(), iPos);
+ if ( iPos != wxNOT_FOUND )
+ {
+ if ( iPos != 0 )
+ str.assign(*this, 0, iPos);
+
+ if ( rest )
+ rest->assign(*this, iPos + 1, npos);
+ }
+ else
+ {
+ if ( rest )
+ *rest = *this;
+ }
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
+// 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( !strOld.empty(), 0,
- _T("wxString::Replace(): invalid parameter") );
+ wxT("wxString::Replace(): invalid parameter") );
+
+ wxSTRING_INVALIDATE_CACHE();
size_t uiCount = 0; // count of replacements made
- size_t uiOldLen = strOld.length();
- size_t uiNewLen = strNew.length();
+ // 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;
- size_t dwPos = 0;
+ m_impl[pos++] = chNew;
- while ( (*this)[dwPos] != wxT('\0') )
+ uiCount++;
+
+ 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(strOld, dwPos);
- if ( dwPos == npos )
- break; // exit the loop
- else
+ size_t pos = m_impl.find(strOld.m_impl, 0);
+ if ( pos != npos )
{
- //replace this occurance of the old string with the new one
- replace(dwPos, uiOldLen, strNew, 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;
const_iterator i = begin();
- if ( *i == _T('-') || *i == _T('+') )
+ if ( *i == wxT('-') || *i == wxT('+') )
++i;
for ( ; i != end(); ++i )
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
// ---------------------------------------------------------------------------
#define DO_IF_NOT_WINCE(x)
#endif
-#define WX_STRING_TO_INT_TYPE(out, base, func, T) \
- wxCHECK_MSG( out, false, _T("NULL output pointer") ); \
- wxASSERT_MSG( !base || (base > 1 && base <= 36), _T("invalid 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; \
- T val = func(start, &end, base); \
- \
- /* 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: */ \
- if ( *end || end == start DO_IF_NOT_WINCE(|| errno == ERANGE) ) \
+ wxStringCharType *end;
+
+// 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; \
- *out = val; \
- return true
+ *pVal = val; \
+ return !*end;
bool wxString::ToLong(long *pVal, int base) const
{
- WX_STRING_TO_INT_TYPE(pVal, base, wxStrtol, long);
+ 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::ToULong(unsigned long *pVal, int base) const
{
- WX_STRING_TO_INT_TYPE(pVal, base, wxStrtoul, unsigned long);
+ 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::ToLongLong(wxLongLong_t *pVal, int base) const
{
- WX_STRING_TO_INT_TYPE(pVal, base, wxStrtoll, wxLongLong_t);
+ 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::ToULongLong(wxULongLong_t *pVal, int base) const
{
- WX_STRING_TO_INT_TYPE(pVal, base, wxStrtoull, wxULongLong_t);
+ 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::ToDouble(double *pVal) const
{
- wxCHECK_MSG( pVal, false, _T("NULL output pointer") );
+ WX_STRING_TO_X_TYPE_START
+ double val = wxStrtod(start, &end);
+ WX_STRING_TO_X_TYPE_END
+}
- DO_IF_NOT_WINCE( errno = 0; )
+#if wxUSE_XLOCALE
- const wxChar *start = c_str();
- wxChar *end;
- double val = wxStrtod(start, &end);
+bool wxString::ToCLong(long *pVal, int base) const
+{
+ wxASSERT_MSG( !base || (base > 1 && base <= 36), wxT("invalid base") );
- // 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
- if ( *end || end == start DO_IF_NOT_WINCE(|| errno == ERANGE) )
- return false;
+ 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
+ long val = wxStrtol_l(start, &end, base, wxCLocale);
+#endif
+ WX_STRING_TO_X_TYPE_END
+}
- *pVal = val;
+bool wxString::ToCULong(unsigned long *pVal, int base) const
+{
+ wxASSERT_MSG( !base || (base > 1 && base <= 36), wxT("invalid base") );
- return true;
+ 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
+}
+
+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
+}
+
+#else // wxUSE_XLOCALE
+
+// Provide implementation of these functions even when wxUSE_XLOCALE is
+// disabled, we still need them in wxWidgets internal code.
+
+// For integers we just assume the current locale uses the same number
+// representation as the C one as there is nothing else we can do.
+bool wxString::ToCLong(long *pVal, int base) const
+{
+ return ToLong(pVal, base);
+}
+
+bool wxString::ToCULong(unsigned long *pVal, int base) const
+{
+ return ToULong(pVal, base);
+}
+
+// For floating point numbers we have to handle the problem of the decimal
+// point which is different in different locales.
+bool wxString::ToCDouble(double *pVal) const
+{
+ // Create a copy of this string using the decimal point instead of whatever
+ // separator the current locale uses.
+#if wxUSE_INTL
+ wxString sep = wxLocale::GetInfo(wxLOCALE_DECIMAL_POINT,
+ wxLOCALE_CAT_NUMBER);
+ if ( sep == "." )
+ {
+ // We can avoid an unnecessary string copy in this case.
+ return ToDouble(pVal);
+ }
+#else // !wxUSE_INTL
+ // We don't know what the current separator is so it might even be a point
+ // already, try to parse the string as a double:
+ if ( ToDouble(pVal) )
+ {
+ // It must have been the point, nothing else to do.
+ return true;
+ }
+
+ // Try to guess the separator, using the most common alternative value.
+ wxString sep(",");
+#endif // wxUSE_INTL/!wxUSE_INTL
+ wxString cstr(*this);
+ cstr.Replace(".", sep);
+
+ return cstr.ToDouble(pVal);
+}
+
+#endif // wxUSE_XLOCALE/!wxUSE_XLOCALE
+
+// ----------------------------------------------------------------------------
+// number to string conversion
+// ----------------------------------------------------------------------------
+
+/* static */
+wxString wxString::FromDouble(double val, int precision)
+{
+ wxCHECK_MSG( precision >= -1, wxString(), "Invalid negative precision" );
+
+ wxString format;
+ if ( precision == -1 )
+ {
+ format = "%g";
+ }
+ else // Use fixed precision.
+ {
+ format.Printf("%%.%df", precision);
+ }
+
+ return wxString::Format(format, val);
+}
+
+/* static */
+wxString wxString::FromCDouble(double val, int precision)
+{
+ wxCHECK_MSG( precision >= -1, wxString(), "Invalid negative precision" );
+
+#if wxUSE_STD_IOSTREAM && wxUSE_STD_STRING
+ // We assume that we can use the ostream and not wstream for numbers.
+ wxSTD ostringstream os;
+ if ( precision != -1 )
+ {
+ os.precision(precision);
+ os.setf(std::ios::fixed, std::ios::floatfield);
+ }
+
+ os << val;
+ return os.str();
+#else // !wxUSE_STD_IOSTREAM
+ // Can't use iostream locale support, fall back to the manual method
+ // instead.
+ wxString s = FromDouble(val, precision);
+#if wxUSE_INTL
+ wxString sep = wxLocale::GetInfo(wxLOCALE_DECIMAL_POINT,
+ wxLOCALE_CAT_NUMBER);
+#else // !wxUSE_INTL
+ // As above, this is the most common alternative value. Notice that here it
+ // doesn't matter if we guess wrongly and the current separator is already
+ // ".": we'll just waste a call to Replace() in this case.
+ wxString sep(",");
+#endif // wxUSE_INTL/!wxUSE_INTL
+
+ s.Replace(sep, ".");
+ return s;
+#endif // wxUSE_STD_IOSTREAM/!wxUSE_STD_IOSTREAM
}
// ---------------------------------------------------------------------------
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
+ as meaning hard errors and everything else gets the old behaviour 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
+ In practice it's impossible to determine before compilation which behaviour
+ may be used. The vswprintf function may have vsnprintf-like behaviour or
+ vice-versa. Behaviour 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
+ about behaviour 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.
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.
+ Darwin (tested on 10.5) follows the C99 behaviour exactly.
- Glibc 2.6 almost follows the C99 behavior except vswprintf never sets
+ Glibc 2.6 almost follows the C99 behaviour except vswprintf never sets
errno even when it fails. However, it only seems to ever fail due
to an undersized buffer.
*/
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;
}
// always do it manually
// 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] = _T('\0');
+ 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
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());
// FIXME-UTF8: implement using iterators, remove #if
#if wxUSE_UNICODE_UTF8
- wxWCharBuffer maskBuf = mask.wc_str();
- wxWCharBuffer txtBuf = wc_str();
+ const wxScopedWCharBuffer maskBuf = mask.wc_str();
+ const wxScopedWCharBuffer txtBuf = wc_str();
const wxChar *pszMask = maskBuf.data();
const wxChar *pszTxt = txtBuf.data();
#else
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(); }
-
-// ----------------------------------------------------------------------------
-// wxUTF8StringBuffer
-// ----------------------------------------------------------------------------
-
-#if wxUSE_UNICODE_WCHAR
-wxUTF8StringBuffer::~wxUTF8StringBuffer()
-{
- wxMBConvStrictUTF8 conv;
- size_t wlen = conv.ToWChar(NULL, 0, m_buf);
- wxCHECK_RET( wlen != wxCONV_FAILED, "invalid UTF-8 data in string buffer?" );
-
- wxStringInternalBuffer wbuf(m_str, wlen);
- conv.ToWChar(wbuf, wlen, m_buf);
-}
-
-wxUTF8StringBufferLength::~wxUTF8StringBufferLength()
-{
- wxCHECK_RET(m_lenSet, "length not set");
-
- wxMBConvStrictUTF8 conv;
- size_t wlen = conv.ToWChar(NULL, 0, m_buf, m_len);
- wxCHECK_RET( wlen != wxCONV_FAILED, "invalid UTF-8 data in string buffer?" );
-
- wxStringInternalBufferLength wbuf(m_str, wlen);
- conv.ToWChar(wbuf, wlen, m_buf, m_len);
- wbuf.SetLength(wlen);
-}
-#endif // wxUSE_UNICODE_WCHAR
projects / wxWidgets.git / blobdiff