X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/47d67540a017101b3e46abe9ef0f55914d8de37e..f855e630cc1f05707835d796f5338de1fe68bd2f:/include/wx/string.h diff --git a/include/wx/string.h b/include/wx/string.h index 44d6803a1b..541332d4ae 100644 --- a/include/wx/string.h +++ b/include/wx/string.h @@ -1,13 +1,13 @@ -///////////////////////////////////////////////////////////////////////////// +/////////////////////////////////////////////////////////////////////////////// // Name: string.h -// Purpose: wxString class +// Purpose: wxString and wxArrayString classes // Author: Vadim Zeitlin // Modified by: // Created: 29/01/98 // RCS-ID: $Id$ // Copyright: (c) 1998 Vadim Zeitlin // Licence: wxWindows license -///////////////////////////////////////////////////////////////////////////// +/////////////////////////////////////////////////////////////////////////////// #ifndef _WX_WXSTRINGH__ #define _WX_WXSTRINGH__ @@ -22,6 +22,9 @@ * stdarg.h * limits.h */ +#ifdef __WXMAC__ +#include +#endif #include #include #include @@ -37,58 +40,69 @@ #include "wx/debug.h" -/** @name wxString library - @memo Efficient wxString class [more or less] compatible with MFC CString, - wxWindows wxString and std::string and some handy functions - missing from string.h. - */ -//@{ +/* + Efficient string class [more or less] compatible with MFC CString, + wxWindows version 1 wxString and std::string and some handy functions + missing from string.h. +*/ // --------------------------------------------------------------------------- // macros // --------------------------------------------------------------------------- -/** @name Macros - @memo You can switch off wxString/std::string compatibility if desired - */ -/// compile the std::string compatibility functions -#define STD_STRING_COMPATIBILITY +// compile the std::string compatibility functions if defined +#define wxSTD_STRING_COMPATIBILITY -/// define to derive wxString from wxObject +// define to derive wxString from wxObject +#ifdef WXSTRING_IS_WXOBJECT #undef WXSTRING_IS_WXOBJECT +#endif -/// maximum possible length for a string means "take all string" everywhere +// maximum possible length for a string means "take all string" everywhere // (as sizeof(StringData) is unknown here we substract 100) #define STRING_MAXLEN (UINT_MAX - 100) // 'naughty' cast #define WXSTRINGCAST (char *)(const char *) -// NB: works only inside wxString class +// implementation only #define ASSERT_VALID_INDEX(i) wxASSERT( (unsigned)(i) < Len() ) // --------------------------------------------------------------------------- -/** @name Global functions complementing standard C string library - @memo replacements for strlen() and portable strcasecmp() - */ -// --------------------------------------------------------------------------- +// Global functions complementing standard C string library replacements for +// strlen() and portable strcasecmp() +//--------------------------------------------------------------------------- -/// checks whether the passed in pointer is NULL and if the string is empty +// checks whether the passed in pointer is NULL and if the string is empty inline bool WXDLLEXPORT IsEmpty(const char *p) { return !p || !*p; } -/// safe version of strlen() (returns 0 if passed NULL pointer) -inline size_t WXDLLEXPORT Strlen(const char *psz) +// safe version of strlen() (returns 0 if passed NULL pointer) +inline size_t WXDLLEXPORT Strlen(const char *psz) { return psz ? strlen(psz) : 0; } -/// portable strcasecmp/_stricmp +// portable strcasecmp/_stricmp inline int WXDLLEXPORT Stricmp(const char *psz1, const char *psz2) { #if defined(_MSC_VER) return _stricmp(psz1, psz2); +#elif defined(__SC__) + return _stricmp(psz1, psz2); +#elif defined(__SALFORDC__) + return stricmp(psz1, psz2); #elif defined(__BORLANDC__) return stricmp(psz1, psz2); +#elif defined(__WATCOMC__) + return stricmp(psz1, psz2); #elif defined(__UNIX__) || defined(__GNUWIN32__) return strcasecmp(psz1, psz2); +#elif defined(__MWERKS__) && !defined(_MSC_VER) + register char c1, c2; + do { + c1 = tolower(*psz1++); + c2 = tolower(*psz2++); + } while ( c1 && (c1 == c2) ); + + return c1 - c2; #else // almost all compilers/libraries provide this function (unfortunately under // different names), that's why we don't implement our own which will surely @@ -111,6 +125,8 @@ inline int WXDLLEXPORT Stricmp(const char *psz1, const char *psz2) // global data // ---------------------------------------------------------------------------- +WXDLLEXPORT_DATA(extern const char*) wxEmptyString; + // global pointer to empty string WXDLLEXPORT_DATA(extern const char*) g_szNul; @@ -146,46 +162,42 @@ struct WXDLLEXPORT wxStringData }; // --------------------------------------------------------------------------- -/** - This is (yet another one) String class for C++ programmers. It doesn't use - any of "advanced" C++ features (i.e. templates, exceptions, namespaces...) - thus you should be able to compile it with practicaly any C++ compiler. - This class uses copy-on-write technique, i.e. identical strings share the - same memory as long as neither of them is changed. - - This class aims to be as compatible as possible with the new standard - std::string class, but adds some additional functions and should be - at least as efficient than the standard implementation. - - Performance note: it's more efficient to write functions which take - "const String&" arguments than "const char *" if you assign the argument - to another string. - - It was compiled and tested under Win32, Linux (libc 5 & 6), Solaris 5.5. - - To do: - - ressource support (string tables in ressources) - - more wide character (UNICODE) support - - regular expressions support - -@memo A non-template portable wxString class implementing copy-on-write. -@author VZ -@version 1.3 -*/ +// This is (yet another one) String class for C++ programmers. It doesn't use +// any of "advanced" C++ features (i.e. templates, exceptions, namespaces...) +// thus you should be able to compile it with practicaly any C++ compiler. +// This class uses copy-on-write technique, i.e. identical strings share the +// same memory as long as neither of them is changed. +// +// This class aims to be as compatible as possible with the new standard +// std::string class, but adds some additional functions and should be at +// least as efficient than the standard implementation. +// +// Performance note: it's more efficient to write functions which take "const +// String&" arguments than "const char *" if you assign the argument to +// another string. +// +// It was compiled and tested under Win32, Linux (libc 5 & 6), Solaris 5.5. +// +// To do: +// - ressource support (string tables in ressources) +// - more wide character (UNICODE) support +// - regular expressions support // --------------------------------------------------------------------------- + #ifdef WXSTRING_IS_WXOBJECT - class WXDLLEXPORT wxString : public wxObject - { +class WXDLLEXPORT wxString : public wxObject +{ DECLARE_DYNAMIC_CLASS(wxString) #else //WXSTRING_IS_WXOBJECT - class WXDLLEXPORT wxString - { +class WXDLLEXPORT wxString +{ #endif //WXSTRING_IS_WXOBJECT friend class WXDLLEXPORT wxArrayString; - // NB: special care was taken in arrangin the member functions in such order - // that all inline functions can be effectively inlined + // NB: special care was taken in arranging the member functions in such order + // that all inline functions can be effectively inlined, verify that all + // performace critical functions are still inlined if you change order! private: // points to data preceded by wxStringData structure with ref count info char *m_pchData; @@ -219,11 +231,10 @@ private: void AllocBeforeWrite(size_t); public: - /** @name constructors & dtor */ - //@{ - /// ctor for an empty string + // constructors and destructor + // ctor for an empty string wxString() { Init(); } - /// copy ctor + // copy ctor wxString(const wxString& stringSrc) { wxASSERT( stringSrc.GetStringData()->IsValid() ); @@ -237,103 +248,113 @@ public: GetStringData()->Lock(); // => one more copy } } - /// string containing nRepeat copies of ch + // string containing nRepeat copies of ch wxString(char ch, size_t nRepeat = 1); - /// ctor takes first nLength characters from C string + // ctor takes first nLength characters from C string // (default value of STRING_MAXLEN means take all the string) wxString(const char *psz, size_t nLength = STRING_MAXLEN) { InitWith(psz, 0, nLength); } - /// from C string (for compilers using unsigned char) + // from C string (for compilers using unsigned char) wxString(const unsigned char* psz, size_t nLength = STRING_MAXLEN); - /// from wide (UNICODE) string + // from wide (UNICODE) string wxString(const wchar_t *pwz); - /// dtor is not virtual, this class must not be inherited from! + // dtor is not virtual, this class must not be inherited from! ~wxString() { GetStringData()->Unlock(); } - //@} - /** @name generic attributes & operations */ - //@{ - /// as standard strlen() + // generic attributes & operations + // as standard strlen() size_t Len() const { return GetStringData()->nDataLength; } - /// string contains any characters? + // string contains any characters? bool IsEmpty() const { return Len() == 0; } - /// reinitialize string (and free data!) + // empty string is "FALSE", so !str will return TRUE + bool operator!() const { return IsEmpty(); } + // empty string contents void Empty() { - if ( GetStringData()->nDataLength != 0 ) + if ( !IsEmpty() ) Reinit(); + // should be empty wxASSERT( GetStringData()->nDataLength == 0 ); - wxASSERT( GetStringData()->nAllocLength == 0 ); + } + // empty the string and free memory + void Clear() + { + if ( !GetStringData()->IsEmpty() ) + Reinit(); + + wxASSERT( GetStringData()->nDataLength == 0 ); // should be empty + wxASSERT( GetStringData()->nAllocLength == 0 ); // and not own any memory } - /// Is an ascii value + // contents test + // Is an ascii value bool IsAscii() const; - /// Is a number + // Is a number bool IsNumber() const; - /// Is a word + // Is a word bool IsWord() const; - //@} - /** @name data access (all indexes are 0 based) */ - //@{ - /// read access + // data access (all indexes are 0 based) + // read access char GetChar(size_t n) const { ASSERT_VALID_INDEX( n ); return m_pchData[n]; } - /// read/write access + // read/write access char& GetWritableChar(size_t n) { ASSERT_VALID_INDEX( n ); CopyBeforeWrite(); return m_pchData[n]; } - /// write access + // write access void SetChar(size_t n, char ch) { ASSERT_VALID_INDEX( n ); CopyBeforeWrite(); m_pchData[n] = ch; } - /// get last character + // get last character char Last() const { wxASSERT( !IsEmpty() ); return m_pchData[Len() - 1]; } - /// get writable last character + // get writable last character char& Last() { wxASSERT( !IsEmpty() ); CopyBeforeWrite(); return m_pchData[Len()-1]; } - /// operator version of GetChar + // on alpha-linux this gives overload problems: + // Also on Solaris, so removing for now (JACS) +#if ! defined(__ALPHA__) + // operator version of GetChar char operator[](size_t n) const { ASSERT_VALID_INDEX( n ); return m_pchData[n]; } - /// operator version of GetChar +#endif + + // operator version of GetChar char operator[](int n) const { ASSERT_VALID_INDEX( n ); return m_pchData[n]; } - /// operator version of GetWritableChar + // operator version of GetWritableChar char& operator[](size_t n) { ASSERT_VALID_INDEX( n ); CopyBeforeWrite(); return m_pchData[n]; } - /// implicit conversion to C string + // implicit conversion to C string operator const char*() const { return m_pchData; } - /// explicit conversion to C string (use this with printf()!) + // explicit conversion to C string (use this with printf()!) const char* c_str() const { return m_pchData; } - /// + // const char* GetData() const { return m_pchData; } - //@} - /** @name overloaded assignment */ - //@{ - /// + // overloaded assignment + // from another wxString wxString& operator=(const wxString& stringSrc); - /// + // from a character wxString& operator=(char ch); - /// + // from a C string wxString& operator=(const char *psz); - /// + // from another kind of C string wxString& operator=(const unsigned char* psz); - /// + // from a wide string wxString& operator=(const wchar_t *pwz); - //@} - - /** @name string concatenation */ - //@{ - /** @name in place concatenation */ - /** @name concatenate and return the result - left to right associativity of << allows to write - things like "str << str1 << str2 << ..." */ - //@{ - /// as += + + // string concatenation + // in place concatenation + /* + Concatenate and return the result. Note that the left to right + associativity of << allows to write things like "str << str1 << str2 + << ..." (unlike with +=) + */ + // string += string wxString& operator<<(const wxString& s) { wxASSERT( s.GetStringData()->IsValid() ); @@ -341,590 +362,514 @@ public: ConcatSelf(s.Len(), s); return *this; } - /// as += + // string += C string wxString& operator<<(const char *psz) { ConcatSelf(Strlen(psz), psz); return *this; } - /// as += + // string += char wxString& operator<<(char ch) { ConcatSelf(1, &ch); return *this; } - //@} - //@{ - /// string += string + // string += string void operator+=(const wxString& s) { (void)operator<<(s); } - /// string += C string + // string += C string void operator+=(const char *psz) { (void)operator<<(psz); } - /// string += char + // string += char void operator+=(char ch) { (void)operator<<(ch); } - //@} - - /** @name return resulting string */ - //@{ - /// - friend wxString operator+(const wxString& string1, const wxString& string2); - /// - friend wxString operator+(const wxString& string, char ch); - /// - friend wxString operator+(char ch, const wxString& string); - /// - friend wxString operator+(const wxString& string, const char *psz); - /// - friend wxString operator+(const char *psz, const wxString& string); - //@} - //@} - - /** @name string comparison */ - //@{ - /** - case-sensitive comparison - @return 0 if equal, +1 if greater or -1 if less - @see CmpNoCase, IsSameAs - */ + + // string += C string + wxString& Append(const char* psz) + { ConcatSelf(Strlen(psz), psz); return *this; } + // append count copies of given character + wxString& Append(char ch, size_t count = 1u) + { wxString str(ch, count); return *this << str; } + + // prepend a string, return the string itself + wxString& Prepend(const wxString& str) + { *this = str + *this; return *this; } + + // non-destructive concatenation + // + friend wxString WXDLLEXPORT operator+(const wxString& string1, const wxString& string2); + // + friend wxString WXDLLEXPORT operator+(const wxString& string, char ch); + // + friend wxString WXDLLEXPORT operator+(char ch, const wxString& string); + // + friend wxString WXDLLEXPORT operator+(const wxString& string, const char *psz); + // + friend wxString WXDLLEXPORT operator+(const char *psz, const wxString& string); + + // stream-like functions + // insert an int into string + wxString& operator<<(int i); + // insert a float into string + wxString& operator<<(float f); + // insert a double into string + wxString& operator<<(double d); + + // string comparison + // case-sensitive comparison: return 0 if =, +1 if > or -1 if < int Cmp(const char *psz) const { return strcmp(c_str(), psz); } - /** - case-insensitive comparison, return code as for wxString::Cmp() - @see: Cmp, IsSameAs - */ + // same as Cmp() but not case-sensitive int CmpNoCase(const char *psz) const { return Stricmp(c_str(), psz); } - /** - test for string equality, case-sensitive (default) or not - @param bCase is TRUE by default (case matters) - @return TRUE if strings are equal, FALSE otherwise - @see Cmp, CmpNoCase - */ - bool IsSameAs(const char *psz, bool bCase = TRUE) const - { return !(bCase ? Cmp(psz) : CmpNoCase(psz)); } - //@} - - /** @name other standard string operations */ - //@{ - /** @name simple sub-string extraction - */ - //@{ - /** - return substring starting at nFirst of length - nCount (or till the end if nCount = default value) - */ + // test for the string equality, either considering case or not + // (if compareWithCase then the case matters) + bool IsSameAs(const char *psz, bool compareWithCase = TRUE) const + { return (compareWithCase ? Cmp(psz) : CmpNoCase(psz)) == 0; } + + // simple sub-string extraction + // return substring starting at nFirst of length nCount (or till the end + // if nCount = default value) wxString Mid(size_t nFirst, size_t nCount = STRING_MAXLEN) const; - /// get first nCount characters + + // operator version of Mid() + wxString operator()(size_t start, size_t len) const + { return Mid(start, len); } + + // get first nCount characters wxString Left(size_t nCount) const; - /// get all characters before the first occurence of ch - /// (returns the whole string if ch not found) - wxString Left(char ch) const; - /// get all characters before the last occurence of ch - /// (returns empty string if ch not found) - wxString Before(char ch) const; - /// get all characters after the first occurence of ch - /// (returns empty string if ch not found) - wxString After(char ch) const; - /// get last nCount characters + // get last nCount characters wxString Right(size_t nCount) const; - /// get all characters after the last occurence of ch - /// (returns the whole string if ch not found) - wxString Right(char ch) const; - //@} - - /** @name case conversion */ - //@{ - /// + // get all characters before the first occurence of ch + // (returns the whole string if ch not found) + wxString BeforeFirst(char ch) const; + // get all characters before the last occurence of ch + // (returns empty string if ch not found) + wxString BeforeLast(char ch) const; + // get all characters after the first occurence of ch + // (returns empty string if ch not found) + wxString AfterFirst(char ch) const; + // get all characters after the last occurence of ch + // (returns the whole string if ch not found) + wxString AfterLast(char ch) const; + + // for compatibility only, use more explicitly named functions above + wxString Before(char ch) const { return BeforeLast(ch); } + wxString After(char ch) const { return AfterFirst(ch); } + + // case conversion + // convert to upper case in place, return the string itself wxString& MakeUpper(); - /// + // convert to upper case, return the copy of the string + // Here's something to remember: BC++ doesn't like returns in inlines. + wxString Upper() const ; + // convert to lower case in place, return the string itself wxString& MakeLower(); - //@} + // convert to lower case, return the copy of the string + wxString Lower() const ; - /** @name trimming/padding whitespace (either side) and truncating */ - //@{ - /// remove spaces from left or from right (default) side + // trimming/padding whitespace (either side) and truncating + // remove spaces from left or from right (default) side wxString& Trim(bool bFromRight = TRUE); - /// add nCount copies chPad in the beginning or at the end (default) + // add nCount copies chPad in the beginning or at the end (default) wxString& Pad(size_t nCount, char chPad = ' ', bool bFromRight = TRUE); - /// truncate string to given length + // truncate string to given length wxString& Truncate(size_t uiLen); - //@} - /** @name searching and replacing */ - //@{ - /// searching (return starting index, or -1 if not found) + // searching and replacing + // searching (return starting index, or -1 if not found) int Find(char ch, bool bFromEnd = FALSE) const; // like strchr/strrchr - /// searching (return starting index, or -1 if not found) + // searching (return starting index, or -1 if not found) int Find(const char *pszSub) const; // like strstr - /** - replace first (or all) occurences of substring with another one - @param bReplaceAll: global replace (default) or only the first occurence - @return the number of replacements made - */ - size_t Replace(const char *szOld, const char *szNew, bool bReplaceAll = TRUE); - //@} - - /// check if the string contents matches a mask containing '*' and '?' + // replace first (or all of bReplaceAll) occurences of substring with + // another string, returns the number of replacements made + size_t Replace(const char *szOld, + const char *szNew, + bool bReplaceAll = TRUE); + + // check if the string contents matches a mask containing '*' and '?' bool Matches(const char *szMask) const; - //@} - /** @name formated input/output */ - //@{ - /// as sprintf(), returns the number of characters written or < 0 on error + // formated input/output + // as sprintf(), returns the number of characters written or < 0 on error int Printf(const char *pszFormat, ...); - /// as vprintf(), returns the number of characters written or < 0 on error + // as vprintf(), returns the number of characters written or < 0 on error int PrintfV(const char* pszFormat, va_list argptr); - //@} - /** @name raw access to string memory */ - //@{ - /// ensure that string has space for at least nLen characters + // raw access to string memory + // ensure that string has space for at least nLen characters // only works if the data of this string is not shared void Alloc(size_t nLen); - /// minimize the string's memory + // minimize the string's memory // only works if the data of this string is not shared void Shrink(); - /** - get writable buffer of at least nLen bytes. - Unget() *must* be called a.s.a.p. to put string back in a reasonable - state! - */ + // get writable buffer of at least nLen bytes. Unget() *must* be called + // a.s.a.p. to put string back in a reasonable state! char *GetWriteBuf(size_t nLen); - /// call this immediately after GetWriteBuf() has been used + // call this immediately after GetWriteBuf() has been used void UngetWriteBuf(); - //@} - /** @name wxWindows compatibility functions */ - //@{ - /// values for second parameter of CompareTo function + // wxWindows version 1 compatibility functions + + // use Mid() + wxString SubString(size_t from, size_t to) const + { return Mid(from, (to - from + 1)); } + // values for second parameter of CompareTo function enum caseCompare {exact, ignoreCase}; - /// values for first parameter of Strip function + // values for first parameter of Strip function enum stripType {leading = 0x1, trailing = 0x2, both = 0x3}; - /// same as Printf() - inline int sprintf(const char *pszFormat, ...) - { - va_list argptr; - va_start(argptr, pszFormat); - int iLen = PrintfV(pszFormat, argptr); - va_end(argptr); - return iLen; - } - /// same as Cmp + // use Printf() + int sprintf(const char *pszFormat, ...); + + // use Cmp() inline int CompareTo(const char* psz, caseCompare cmp = exact) const { return cmp == exact ? Cmp(psz) : CmpNoCase(psz); } - /// same as Mid (substring extraction) - inline wxString operator()(size_t start, size_t len) const - { return Mid(start, len); } - - /// same as += or << - inline wxString& Append(const char* psz) { return *this << psz; } - inline wxString& Append(char ch, int count = 1) - { wxString str(ch, count); (*this) += str; return *this; } - - /// - wxString& Prepend(const wxString& str) - { *this = str + *this; return *this; } - /// same as Len + // use Len size_t Length() const { return Len(); } - /// same as MakeLower + // Count the number of characters + int Freq(char ch) const; + // use MakeLower void LowerCase() { MakeLower(); } - /// same as MakeUpper + // use MakeUpper void UpperCase() { MakeUpper(); } - /// same as Trim except that it doesn't change this string + // use Trim except that it doesn't change this string wxString Strip(stripType w = trailing) const; - /// same as Find (more general variants not yet supported) + // use Find (more general variants not yet supported) size_t Index(const char* psz) const { return Find(psz); } size_t Index(char ch) const { return Find(ch); } - /// same as Truncate + // use Truncate wxString& Remove(size_t pos) { return Truncate(pos); } wxString& RemoveLast() { return Truncate(Len() - 1); } wxString& Remove(size_t nStart, size_t nLen) { return erase( nStart, nLen ); } + // use Find() int First( const char ch ) const { return Find(ch); } int First( const char* psz ) const { return Find(psz); } int First( const wxString &str ) const { return Find(str); } - int Last( const char ch ) const { return Find(ch, TRUE); } + bool Contains(const wxString& str) const { return Find(str) != -1; } - /// same as IsEmpty + // use IsEmpty() bool IsNull() const { return IsEmpty(); } - //@} -#ifdef STD_STRING_COMPATIBILITY - /** @name std::string compatibility functions */ +#ifdef wxSTD_STRING_COMPATIBILITY + // std::string compatibility functions - /// an 'invalid' value for string index + // an 'invalid' value for string index static const size_t npos; - //@{ - /** @name constructors */ - //@{ - /// take nLen chars starting at nPos - wxString(const wxString& str, size_t nPos, size_t nLen = npos) - { - wxASSERT( str.GetStringData()->IsValid() ); - InitWith(str.c_str(), nPos, nLen == npos ? 0 : nLen); - } - /// take all characters from pStart to pEnd - wxString(const void *pStart, const void *pEnd); - //@} - /** @name lib.string.capacity */ - //@{ - /// return the length of the string - size_t size() const { return Len(); } - /// return the length of the string - size_t length() const { return Len(); } - /// return the maximum size of the string - size_t max_size() const { return STRING_MAXLEN; } - /// resize the string, filling the space with c if c != 0 - void resize(size_t nSize, char ch = '\0'); - /// delete the contents of the string - void clear() { Empty(); } - /// returns true if the string is empty - bool empty() const { return IsEmpty(); } - //@} - /** @name lib.string.access */ - //@{ - /// return the character at position n - char at(size_t n) const { return GetChar(n); } - /// returns the writable character at position n - char& at(size_t n) { return GetWritableChar(n); } - //@} - /** @name lib.string.modifiers */ - //@{ - /** @name append something to the end of this one */ - //@{ - /// append a string - wxString& append(const wxString& str) - { *this += str; return *this; } - /// append elements str[pos], ..., str[pos+n] - wxString& append(const wxString& str, size_t pos, size_t n) - { ConcatSelf(n, str.c_str() + pos); return *this; } - /// append first n (or all if n == npos) characters of sz - wxString& append(const char *sz, size_t n = npos) - { ConcatSelf(n == npos ? Strlen(sz) : n, sz); return *this; } - - /// append n copies of ch - wxString& append(size_t n, char ch) { return Pad(n, ch); } - //@} - - /** @name replaces the contents of this string with another one */ - //@{ - /// same as `this_string = str' - wxString& assign(const wxString& str) { return (*this) = str; } - /// same as ` = str[pos..pos + n] - wxString& assign(const wxString& str, size_t pos, size_t n) - { return *this = wxString((const char *)str + pos, n); } - /// same as `= first n (or all if n == npos) characters of sz' - wxString& assign(const char *sz, size_t n = npos) - { return *this = wxString(sz, n); } - /// same as `= n copies of ch' - wxString& assign(size_t n, char ch) - { return *this = wxString(ch, n); } - - //@} - - /** @name inserts something at position nPos into this one */ - //@{ - /// insert another string - wxString& insert(size_t nPos, const wxString& str); - /// insert n chars of str starting at nStart (in str) - wxString& insert(size_t nPos, const wxString& str, size_t nStart, size_t n) - { return insert(nPos, wxString((const char *)str + nStart, n)); } - - /// insert first n (or all if n == npos) characters of sz - wxString& insert(size_t nPos, const char *sz, size_t n = npos) - { return insert(nPos, wxString(sz, n)); } - /// insert n copies of ch - wxString& insert(size_t nPos, size_t n, char ch) - { return insert(nPos, wxString(ch, n)); } - - //@} - - /** @name deletes a part of the string */ - //@{ - /// delete characters from nStart to nStart + nLen - wxString& erase(size_t nStart = 0, size_t nLen = npos); - //@} - - /** @name replaces a substring of this string with another one */ - //@{ - /// replaces the substring of length nLen starting at nStart - wxString& replace(size_t nStart, size_t nLen, const char* sz); - /// replaces the substring with nCount copies of ch - wxString& replace(size_t nStart, size_t nLen, size_t nCount, char ch); - /// replaces a substring with another substring - wxString& replace(size_t nStart, size_t nLen, - const wxString& str, size_t nStart2, size_t nLen2); - /// replaces the substring with first nCount chars of sz - wxString& replace(size_t nStart, size_t nLen, - const char* sz, size_t nCount); - //@} - //@} - - /// swap two strings - void swap(wxString& str); - - /** @name string operations */ - //@{ - /** All find() functions take the nStart argument which specifies - the position to start the search on, the default value is 0. - - All functions return npos if there were no match. - - @name string search - */ - //@{ - /** - @name find a match for the string/character in this string - */ - //@{ - /// find a substring - size_t find(const wxString& str, size_t nStart = 0) const; - - // VC++ 1.5 can't cope with this syntax. -#if ! (defined(_MSC_VER) && !defined(__WIN32__)) - /// find first n characters of sz - size_t find(const char* sz, size_t nStart = 0, size_t n = npos) const; -#endif - /// find the first occurence of character ch after nStart - size_t find(char ch, size_t nStart = 0) const; - - // wxWin compatibility - inline bool Contains(const wxString& str) { return Find(str) != -1; } - - //@} - - /** - @name rfind() family is exactly like find() but works right to left - */ - //@{ - /// as find, but from the end - size_t rfind(const wxString& str, size_t nStart = npos) const; - /// as find, but from the end - // VC++ 1.5 can't cope with this syntax. -#if ! (defined(_MSC_VER) && !defined(__WIN32__)) - size_t rfind(const char* sz, size_t nStart = npos, - size_t n = npos) const; - /// as find, but from the end - size_t rfind(char ch, size_t nStart = npos) const; + // constructors + // take nLen chars starting at nPos + wxString(const wxString& str, size_t nPos, size_t nLen) + { + wxASSERT( str.GetStringData()->IsValid() ); + InitWith(str.c_str(), nPos, nLen == npos ? 0 : nLen); + } + // take all characters from pStart to pEnd + wxString(const void *pStart, const void *pEnd); + + // lib.string.capacity + // return the length of the string + size_t size() const { return Len(); } + // return the length of the string + size_t length() const { return Len(); } + // return the maximum size of the string + size_t max_size() const { return STRING_MAXLEN; } + // resize the string, filling the space with c if c != 0 + void resize(size_t nSize, char ch = '\0'); + // delete the contents of the string + void clear() { Empty(); } + // returns true if the string is empty + bool empty() const { return IsEmpty(); } + + // lib.string.access + // return the character at position n + char at(size_t n) const { return GetChar(n); } + // returns the writable character at position n + char& at(size_t n) { return GetWritableChar(n); } + + // lib.string.modifiers + // append a string + wxString& append(const wxString& str) + { *this += str; return *this; } + // append elements str[pos], ..., str[pos+n] + wxString& append(const wxString& str, size_t pos, size_t n) + { ConcatSelf(n, str.c_str() + pos); return *this; } + // append first n (or all if n == npos) characters of sz + wxString& append(const char *sz, size_t n = npos) + { ConcatSelf(n == npos ? Strlen(sz) : n, sz); return *this; } + + // append n copies of ch + wxString& append(size_t n, char ch) { return Pad(n, ch); } + + // same as `this_string = str' + wxString& assign(const wxString& str) { return (*this) = str; } + // same as ` = str[pos..pos + n] + wxString& assign(const wxString& str, size_t pos, size_t n) + { return *this = wxString((const char *)str + pos, n); } + // same as `= first n (or all if n == npos) characters of sz' + wxString& assign(const char *sz, size_t n = npos) + { return *this = wxString(sz, n); } + // same as `= n copies of ch' + wxString& assign(size_t n, char ch) + { return *this = wxString(ch, n); } + + // insert another string + wxString& insert(size_t nPos, const wxString& str); + // insert n chars of str starting at nStart (in str) + wxString& insert(size_t nPos, const wxString& str, size_t nStart, size_t n) + { return insert(nPos, wxString((const char *)str + nStart, n)); } + + // insert first n (or all if n == npos) characters of sz + wxString& insert(size_t nPos, const char *sz, size_t n = npos) + { return insert(nPos, wxString(sz, n)); } + // insert n copies of ch + wxString& insert(size_t nPos, size_t n, char ch) + { return insert(nPos, wxString(ch, n)); } + + // delete characters from nStart to nStart + nLen + wxString& erase(size_t nStart = 0, size_t nLen = npos); + + // replaces the substring of length nLen starting at nStart + wxString& replace(size_t nStart, size_t nLen, const char* sz); + // replaces the substring with nCount copies of ch + wxString& replace(size_t nStart, size_t nLen, size_t nCount, char ch); + // replaces a substring with another substring + wxString& replace(size_t nStart, size_t nLen, + const wxString& str, size_t nStart2, size_t nLen2); + // replaces the substring with first nCount chars of sz + wxString& replace(size_t nStart, size_t nLen, + const char* sz, size_t nCount); + + // swap two strings + void swap(wxString& str); + + // All find() functions take the nStart argument which specifies the + // position to start the search on, the default value is 0. All functions + // return npos if there were no match. + + // find a substring + size_t find(const wxString& str, size_t nStart = 0) const; + + // VC++ 1.5 can't cope with this syntax. +#if !(defined(_MSC_VER) && !defined(__WIN32__)) + // find first n characters of sz + size_t find(const char* sz, size_t nStart = 0, size_t n = npos) const; #endif - //@} - - /** - @name find first/last occurence of any character in the set - */ - //@{ - /// - size_t find_first_of(const wxString& str, size_t nStart = 0) const; - /// - size_t find_first_of(const char* sz, size_t nStart = 0) const; - /// same as find(char, size_t) - size_t find_first_of(char c, size_t nStart = 0) const; - - /// - size_t find_last_of (const wxString& str, size_t nStart = npos) const; - /// - size_t find_last_of (const char* s, size_t nStart = npos) const; - /// same as rfind(char, size_t) - size_t find_last_of (char c, size_t nStart = npos) const; - //@} - - /** - @name find first/last occurence of any character not in the set - */ - //@{ - /// - size_t find_first_not_of(const wxString& str, size_t nStart = 0) const; - /// - size_t find_first_not_of(const char* s, size_t nStart = 0) const; - /// - size_t find_first_not_of(char ch, size_t nStart = 0) const; - - /// - size_t find_last_not_of(const wxString& str, size_t nStart=npos) const; - /// - size_t find_last_not_of(const char* s, size_t nStart = npos) const; - /// - size_t find_last_not_of(char ch, size_t nStart = npos) const; - //@} - //@} - - /** - All compare functions return -1, 0 or 1 if the [sub]string - is less, equal or greater than the compare() argument. - - @name comparison - */ - //@{ - /// just like strcmp() - int compare(const wxString& str) const { return Cmp(str); } - /// comparison with a substring - int compare(size_t nStart, size_t nLen, const wxString& str) const; - /// comparison of 2 substrings - int compare(size_t nStart, size_t nLen, - const wxString& str, size_t nStart2, size_t nLen2) const; - /// just like strcmp() - int compare(const char* sz) const { return Cmp(sz); } - /// substring comparison with first nCount characters of sz - int compare(size_t nStart, size_t nLen, - const char* sz, size_t nCount = npos) const; - //@} - wxString substr(size_t nStart = 0, size_t nLen = npos) const; - //@} + + // Gives a duplicate symbol (presumably a case-insensitivity problem) +#if !defined(__BORLANDC__) + // find the first occurence of character ch after nStart + size_t find(char ch, size_t nStart = 0) const; #endif -}; + // rfind() family is exactly like find() but works right to left -// ---------------------------------------------------------------------------- -/** The string array uses it's knowledge of internal structure of the String - class to optimize string storage. Normally, we would store pointers to - string, but as String is, in fact, itself a pointer (sizeof(String) is - sizeof(char *)) we store these pointers instead. The cast to "String *" - is really all we need to turn such pointer into a string! + // as find, but from the end + size_t rfind(const wxString& str, size_t nStart = npos) const; - Of course, it can be called a dirty hack, but we use twice less memory - and this approach is also more speed efficient, so it's probably worth it. + // VC++ 1.5 can't cope with this syntax. +#if ! (defined(_MSC_VER) && !defined(__WIN32__)) + // as find, but from the end + size_t rfind(const char* sz, size_t nStart = npos, + size_t n = npos) const; + // as find, but from the end + size_t rfind(char ch, size_t nStart = npos) const; +#endif - Usage notes: when a string is added/inserted, a new copy of it is created, - so the original string may be safely deleted. When a string is retrieved - from the array (operator[] or Item() method), a reference is returned. + // find first/last occurence of any character in the set + + // + size_t find_first_of(const wxString& str, size_t nStart = 0) const; + // + size_t find_first_of(const char* sz, size_t nStart = 0) const; + // same as find(char, size_t) + size_t find_first_of(char c, size_t nStart = 0) const; + // + size_t find_last_of (const wxString& str, size_t nStart = npos) const; + // + size_t find_last_of (const char* s, size_t nStart = npos) const; + // same as rfind(char, size_t) + size_t find_last_of (char c, size_t nStart = npos) const; + + // find first/last occurence of any character not in the set + + // + size_t find_first_not_of(const wxString& str, size_t nStart = 0) const; + // + size_t find_first_not_of(const char* s, size_t nStart = 0) const; + // + size_t find_first_not_of(char ch, size_t nStart = 0) const; + // + size_t find_last_not_of(const wxString& str, size_t nStart=npos) const; + // + size_t find_last_not_of(const char* s, size_t nStart = npos) const; + // + size_t find_last_not_of(char ch, size_t nStart = npos) const; + + // All compare functions return -1, 0 or 1 if the [sub]string is less, + // equal or greater than the compare() argument. + + // just like strcmp() + int compare(const wxString& str) const { return Cmp(str); } + // comparison with a substring + int compare(size_t nStart, size_t nLen, const wxString& str) const; + // comparison of 2 substrings + int compare(size_t nStart, size_t nLen, + const wxString& str, size_t nStart2, size_t nLen2) const; + // just like strcmp() + int compare(const char* sz) const { return Cmp(sz); } + // substring comparison with first nCount characters of sz + int compare(size_t nStart, size_t nLen, + const char* sz, size_t nCount = npos) const; + + // substring extraction + wxString substr(size_t nStart = 0, size_t nLen = npos) const; +#endif // wxSTD_STRING_COMPATIBILITY +}; - @name wxArrayString - @memo probably the most commonly used array type - array of strings - */ +// ---------------------------------------------------------------------------- +// The string array uses it's knowledge of internal structure of the wxString +// class to optimize string storage. Normally, we would store pointers to +// string, but as wxString is, in fact, itself a pointer (sizeof(wxString) is +// sizeof(char *)) we store these pointers instead. The cast to "wxString *" is +// really all we need to turn such pointer into a string! +// +// Of course, it can be called a dirty hack, but we use twice less memory and +// this approach is also more speed efficient, so it's probably worth it. +// +// Usage notes: when a string is added/inserted, a new copy of it is created, +// so the original string may be safely deleted. When a string is retrieved +// from the array (operator[] or Item() method), a reference is returned. // ---------------------------------------------------------------------------- class WXDLLEXPORT wxArrayString { public: - /** @name ctors and dtor */ - //@{ - /// default ctor + // constructors and destructor + // default ctor wxArrayString(); - /// copy ctor + // copy ctor wxArrayString(const wxArrayString& array); - /// assignment operator + // assignment operator wxArrayString& operator=(const wxArrayString& src); - /// not virtual, this class can't be derived from + // not virtual, this class should not be derived from ~wxArrayString(); - //@} - /** @name memory management */ - //@{ - /// empties the list, but doesn't release memory + // memory management + // empties the list, but doesn't release memory void Empty(); - /// empties the list and releases memory + // empties the list and releases memory void Clear(); - /// preallocates memory for given number of items + // preallocates memory for given number of items void Alloc(size_t nCount); - /// minimzes the memory usage (by freeing all extra memory) + // minimzes the memory usage (by freeing all extra memory) void Shrink(); - //@} - - /** @name simple accessors */ - //@{ - /// number of elements in the array - size_t Count() const { return m_nCount; } - /// is it empty? - bool IsEmpty() const { return m_nCount == 0; } - //@} - - /** @name items access (range checking is done in debug version) */ - //@{ - /// get item at position uiIndex + + // simple accessors + // number of elements in the array + size_t GetCount() const { return m_nCount; } + // is it empty? + bool IsEmpty() const { return m_nCount == 0; } + // number of elements in the array (GetCount is preferred API) + size_t Count() const { return m_nCount; } + + // items access (range checking is done in debug version) + // get item at position uiIndex wxString& Item(size_t nIndex) const { wxASSERT( nIndex < m_nCount ); return *(wxString *)&(m_pItems[nIndex]); } - /// same as Item() + // same as Item() wxString& operator[](size_t nIndex) const { return Item(nIndex); } - /// get last item + // get last item wxString& Last() const { wxASSERT( !IsEmpty() ); return Item(Count() - 1); } - //@} - - /** @name item management */ - //@{ - /** - Search the element in the array, starting from the either side - @param if bFromEnd reverse search direction - @param if bCase, comparison is case sensitive (default) - @return index of the first item matched or NOT_FOUND - @see NOT_FOUND - */ + + // item management + // Search the element in the array, starting from the beginning if + // bFromEnd is FALSE or from end otherwise. If bCase, comparison is case + // sensitive (default). Returns index of the first item matched or + // wxNOT_FOUND int Index (const char *sz, bool bCase = TRUE, bool bFromEnd = FALSE) const; - /// add new element at the end - void Add (const wxString& str); - /// add new element at given position + // add new element at the end + void Add(const wxString& str); + // add new element at given position void Insert(const wxString& str, size_t uiIndex); - /// remove first item matching this value + // remove first item matching this value void Remove(const char *sz); - /// remove item by index + // remove item by index void Remove(size_t nIndex); - //@} - /// sort array elements + // sort array elements void Sort(bool bCase = TRUE, bool bReverse = FALSE); private: void Grow(); // makes array bigger if needed void Free(); // free the string stored - size_t m_nSize, // current size of the array + size_t m_nSize, // current size of the array m_nCount; // current number of elements char **m_pItems; // pointer to data }; // --------------------------------------------------------------------------- -/** @name wxString comparison functions - @memo Comparisons are case sensitive - */ +// wxString comparison functions: operator versions are always case sensitive // --------------------------------------------------------------------------- -//@{ -inline bool operator==(const wxString& s1, const wxString& s2) { return s1.Cmp(s2) == 0; } -/// -inline bool operator==(const wxString& s1, const char * s2) { return s1.Cmp(s2) == 0; } -/// -inline bool operator==(const char * s1, const wxString& s2) { return s2.Cmp(s1) == 0; } -/// -inline bool operator!=(const wxString& s1, const wxString& s2) { return s1.Cmp(s2) != 0; } -/// -inline bool operator!=(const wxString& s1, const char * s2) { return s1.Cmp(s2) != 0; } -/// -inline bool operator!=(const char * s1, const wxString& s2) { return s2.Cmp(s1) != 0; } -/// -inline bool operator< (const wxString& s1, const wxString& s2) { return s1.Cmp(s2) < 0; } -/// -inline bool operator< (const wxString& s1, const char * s2) { return s1.Cmp(s2) < 0; } -/// -inline bool operator< (const char * s1, const wxString& s2) { return s2.Cmp(s1) > 0; } -/// -inline bool operator> (const wxString& s1, const wxString& s2) { return s1.Cmp(s2) > 0; } -/// -inline bool operator> (const wxString& s1, const char * s2) { return s1.Cmp(s2) > 0; } -/// -inline bool operator> (const char * s1, const wxString& s2) { return s2.Cmp(s1) < 0; } -/// -inline bool operator<=(const wxString& s1, const wxString& s2) { return s1.Cmp(s2) <= 0; } -/// -inline bool operator<=(const wxString& s1, const char * s2) { return s1.Cmp(s2) <= 0; } -/// -inline bool operator<=(const char * s1, const wxString& s2) { return s2.Cmp(s1) >= 0; } -/// -inline bool operator>=(const wxString& s1, const wxString& s2) { return s1.Cmp(s2) >= 0; } -/// -inline bool operator>=(const wxString& s1, const char * s2) { return s1.Cmp(s2) >= 0; } -/// -inline bool operator>=(const char * s1, const wxString& s2) { return s2.Cmp(s1) <= 0; } -//@} +// +inline bool operator==(const wxString& s1, const wxString& s2) { return (s1.Cmp(s2) == 0); } +// +inline bool operator==(const wxString& s1, const char * s2) { return (s1.Cmp(s2) == 0); } +// +inline bool operator==(const char * s1, const wxString& s2) { return (s2.Cmp(s1) == 0); } +// +inline bool operator!=(const wxString& s1, const wxString& s2) { return (s1.Cmp(s2) != 0); } +// +inline bool operator!=(const wxString& s1, const char * s2) { return (s1.Cmp(s2) != 0); } +// +inline bool operator!=(const char * s1, const wxString& s2) { return (s2.Cmp(s1) != 0); } +// +inline bool operator< (const wxString& s1, const wxString& s2) { return (s1.Cmp(s2) < 0); } +// +inline bool operator< (const wxString& s1, const char * s2) { return (s1.Cmp(s2) < 0); } +// +inline bool operator< (const char * s1, const wxString& s2) { return (s2.Cmp(s1) > 0); } +// +inline bool operator> (const wxString& s1, const wxString& s2) { return (s1.Cmp(s2) > 0); } +// +inline bool operator> (const wxString& s1, const char * s2) { return (s1.Cmp(s2) > 0); } +// +inline bool operator> (const char * s1, const wxString& s2) { return (s2.Cmp(s1) < 0); } +// +inline bool operator<=(const wxString& s1, const wxString& s2) { return (s1.Cmp(s2) <= 0); } +// +inline bool operator<=(const wxString& s1, const char * s2) { return (s1.Cmp(s2) <= 0); } +// +inline bool operator<=(const char * s1, const wxString& s2) { return (s2.Cmp(s1) >= 0); } +// +inline bool operator>=(const wxString& s1, const wxString& s2) { return (s1.Cmp(s2) >= 0); } +// +inline bool operator>=(const wxString& s1, const char * s2) { return (s1.Cmp(s2) >= 0); } +// +inline bool operator>=(const char * s1, const wxString& s2) { return (s2.Cmp(s1) <= 0); } + +wxString WXDLLEXPORT operator+(const wxString& string1, const wxString& string2); +wxString WXDLLEXPORT operator+(const wxString& string, char ch); +wxString WXDLLEXPORT operator+(char ch, const wxString& string); +wxString WXDLLEXPORT operator+(const wxString& string, const char *psz); +wxString WXDLLEXPORT operator+(const char *psz, const wxString& string); // --------------------------------------------------------------------------- -/** @name Global functions complementing standard C string library - @memo replacements for strlen() and portable strcasecmp() - */ +// Implementation only from here until the end of file // --------------------------------------------------------------------------- -#ifdef STD_STRING_COMPATIBILITY +#ifdef wxSTD_STRING_COMPATIBILITY -// fwd decl -class WXDLLEXPORT istream; +// forward declare iostream +// Known not to work with wxUSE_IOSTREAMH set to 0, so +// replacing with includes (on advice of ungod@pasdex.com.au) +// class WXDLLEXPORT istream; +#if wxUSE_IOSTREAMH +// N.B. BC++ doesn't have istream.h, ostream.h +#include +#else +#include +# ifdef _MSC_VER + using namespace std; +# endif +#endif -istream& WXDLLEXPORT operator>>(istream& is, wxString& str); +WXDLLEXPORT istream& operator>>(istream& is, wxString& str); -#endif //std::string compatibility +#endif // wxSTD_STRING_COMPATIBILITY #endif // _WX_WXSTRINGH__ - -//@}