// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
-/**
- @class wxStringBuffer
-
- This tiny class allows you to conveniently access the wxString internal buffer
- as a writable pointer without any risk of forgetting to restore the string
- to the usable state later.
-
- For example, assuming you have a low-level OS function called
- @c "GetMeaningOfLifeAsString(char *)" returning the value in the provided
- buffer (which must be writable, of course) you might call it like this:
-
- @code
- wxString theAnswer;
- GetMeaningOfLifeAsString(wxStringBuffer(theAnswer, 1024));
- if ( theAnswer != "42" )
- wxLogError("Something is very wrong!");
- @endcode
-
- Note that the exact usage of this depends on whether or not wxUSE_STL is
- enabled. If wxUSE_STL is enabled, wxStringBuffer creates a separate empty
- character buffer, and if wxUSE_STL is disabled, it uses GetWriteBuf() from
- wxString, keeping the same buffer wxString uses intact. In other words,
- relying on wxStringBuffer containing the old wxString data is not a good
- idea if you want to build your program both with and without wxUSE_STL.
-
- @library{wxbase}
- @category{data}
-*/
-class wxStringBuffer
-{
-public:
- /**
- Constructs a writable string buffer object associated with the given string
- and containing enough space for at least @a len characters.
- Basically, this is equivalent to calling wxString::GetWriteBuf() and
- saving the result.
- */
- wxStringBuffer(const wxString& str, size_t len);
-
- /**
- Restores the string passed to the constructor to the usable state by calling
- wxString::UngetWriteBuf() on it.
- */
- ~wxStringBuffer();
-
- /**
- Returns the writable pointer to a buffer of the size at least equal to the
- length specified in the constructor.
- */
- wxStringCharType* operator wxStringCharType *();
-};
-
-
/**
@class wxString
version wxWidgets 3.0.
wxString is a class representing a Unicode character string.
- wxString uses @c std::string internally to store its content
- unless this is not supported by the compiler or disabled
- specifically when building wxWidgets and it therefore inherits
- many features from @c std::string. Most implementations of
- @c std::string are thread-safe and don't use reference counting.
- By default, wxString uses @c std::string internally even if
- wxUSE_STL is not defined.
-
- wxString now internally uses UTF-16 under Windows and UTF-8 under
- Unix, Linux and OS X to store its content. Note that when iterating
- over a UTF-16 string under Windows, the user code has to take care
- of surrogate pair handling whereas Windows itself has built-in
- support pairs in UTF-16, such as for drawing strings on screen.
-
- Much work has been done to make existing code using ANSI string literals
- work as before. If you nonetheless need to have a wxString that uses wchar_t
- on Unix and Linux, too, you can specify this on the command line with the
- @c configure @c --disable-utf8 switch or you can consider using wxUString
- or std::wstring instead.
-
- Accessing a UTF-8 string by index can be very inefficient because
- a single character is represented by a variable number of bytes so that
- the entire string has to be parsed in order to find the character.
- Since iterating over a string by index is a common programming technique and
- was also possible and encouraged by wxString using the access operator[]()
- wxString implements caching of the last used index so that iterating over
- a string is a linear operation even in UTF-8 mode.
-
- It is nonetheless recommended to use iterators (instead of index based
- access) like this:
-
- @code
- wxString s = "hello";
- wxString::const_iterator i;
- for (i = s.begin(); i != s.end(); ++i)
- {
- wxUniChar uni_ch = *i;
- // do something with it
- }
- @endcode
-
- Please see the @ref overview_string and the @ref overview_unicode for more
- information about it.
-
- wxString uses the current locale encoding to convert any C string
- literal to Unicode. The same is done for converting to and from
- @c std::string and for the return value of c_str().
- For this conversion, the @a wxConvLibc class instance is used.
- See wxCSConv and wxMBConv.
-
- wxString implements most of the methods of the @c std::string class.
- These standard functions are only listed here, but they are not
- fully documented in this manual. Please see the STL documentation.
+ wxString uses @c std::basic_string internally (even if @c wxUSE_STL is not defined)
+ to store its content (unless this is not supported by the compiler or disabled
+ specifically when building wxWidgets) and it therefore inherits
+ many features from @c std::basic_string. (Note that most implementations of
+ @c std::basic_string are thread-safe and don't use reference counting.)
+
+ These @c std::basic_string standard functions are only listed here, but
+ they are not fully documented in this manual; see the STL documentation
+ (http://www.cppreference.com/wiki/string/start) for more info.
The behaviour of all these functions is identical to the behaviour
described there.
You may notice that wxString sometimes has several functions which do
- the same thing like Length(), Len() and length() which
- all return the string length. In all cases of such duplication the
- @c std::string compatible method should be used.
+ the same thing like Length(), Len() and length() which all return the
+ string length. In all cases of such duplication the @c std::string
+ compatible methods should be used.
+
+ For informations about the internal encoding used by wxString and
+ for important warnings and advices for using it, please read
+ the @ref overview_string.
+
+ In wxWidgets 3.0 wxString always stores Unicode strings, so you should
+ be sure to read also @ref overview_unicode.
@section string_construct Constructors and assignment operators
original string is not modified and the function returns the extracted
substring.
+ @li at()
@li substr()
@li Mid()
@li operator()()
STL reference for their documentation.
*/
//@{
- size_t length() const;
- size_type size() const;
- size_type max_size() const;
- size_type capacity() const;
- void reserve(size_t sz);
-
- void resize(size_t nSize, wxUniChar ch = '\0');
-
wxString& append(const wxString& str, size_t pos, size_t n);
wxString& append(const wxString& str);
wxString& append(const char *sz, size_t n);
wxString& assign(size_t n, wxUniChar ch);
wxString& assign(const_iterator first, const_iterator last);
+ wxUniChar at(size_t n) const;
+ wxUniCharRef at(size_t n);
+
void clear();
+ size_type capacity() const;
+
int compare(const wxString& str) const;
int compare(size_t nStart, size_t nLen, const wxString& str) const;
int compare(size_t nStart, size_t nLen,
int compare(size_t nStart, size_t nLen,
const wchar_t* sz, size_t nCount = npos) const;
+ wxCStrData data() const;
+
bool empty() const;
wxString& erase(size_type pos = 0, size_type n = npos);
size_t find(const char* sz, size_t nStart = 0, size_t n = npos) const;
size_t find(const wchar_t* sz, size_t nStart = 0, size_t n = npos) const;
size_t find(wxUniChar ch, size_t nStart = 0) const;
+ size_t find_first_of(const char* sz, size_t nStart = 0) const;
+ size_t find_first_of(const wchar_t* sz, size_t nStart = 0) const;
+ size_t find_first_of(const char* sz, size_t nStart, size_t n) const;
+ size_t find_first_of(const wchar_t* sz, size_t nStart, size_t n) const;
+ size_t find_first_of(wxUniChar 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* sz, size_t nStart = npos) const;
+ size_t find_last_of (const wchar_t* sz, size_t nStart = npos) const;
+ size_t find_last_of(const char* sz, size_t nStart, size_t n) const;
+ size_t find_last_of(const wchar_t* sz, size_t nStart, size_t n) const;
+ size_t find_last_of(wxUniChar c, size_t nStart = npos) const;
+ size_t find_first_not_of(const wxString& str, size_t nStart = 0) const;
+ size_t find_first_not_of(const char* sz, size_t nStart = 0) const;
+ size_t find_first_not_of(const wchar_t* sz, size_t nStart = 0) const;
+ size_t find_first_not_of(const char* sz, size_t nStart, size_t n) const;
+ size_t find_first_not_of(const wchar_t* sz, size_t nStart, size_t n) const;
+ size_t find_first_not_of(wxUniChar 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* sz, size_t nStart = npos) const;
+ size_t find_last_not_of(const wchar_t* sz, size_t nStart = npos) const;
+ size_t find_last_not_of(const char* sz, size_t nStart, size_t n) const;
+ size_t find_last_not_of(const wchar_t* sz, size_t nStart, size_t n) const;
wxString& insert(size_t nPos, const wxString& str);
wxString& insert(size_t nPos, const wxString& str, size_t nStart, size_t n);
void insert(iterator it, const_iterator first, const_iterator last);
void insert(iterator it, size_type n, wxUniChar ch);
+ size_t length() const;
+
+ size_type max_size() const;
+
+ void reserve(size_t sz);
+ void resize(size_t nSize, wxUniChar ch = '\0');
+
wxString& replace(size_t nStart, size_t nLen, const wxString& str);
wxString& replace(size_t nStart, size_t nLen, size_t nCount, wxUniChar ch);
wxString& replace(size_t nStart, size_t nLen,
- const wxString& str, size_t nStart2, size_t nLen2);
+ const wxString& str, size_t nStart2, size_t nLen2);
wxString& replace(size_t nStart, size_t nLen,
- const char* sz, size_t nCount);
+ const char* sz, size_t nCount);
wxString& replace(size_t nStart, size_t nLen,
- const wchar_t* sz, size_t nCount);
+ const wchar_t* sz, size_t nCount);
wxString& replace(size_t nStart, size_t nLen,
- const wxString& s, size_t nCount);
+ const wxString& s, size_t nCount);
wxString& replace(iterator first, iterator last, const wxString& s);
wxString& replace(iterator first, iterator last, const char* s, size_type n);
wxString& replace(iterator first, iterator last, const wchar_t* s, size_type n);
wxString& replace(iterator first, iterator last, size_type n, wxUniChar ch);
wxString& replace(iterator first, iterator last,
- const_iterator first1, const_iterator last1);
+ const_iterator first1, const_iterator last1);
wxString& replace(iterator first, iterator last,
- const char *first1, const char *last1);
+ const char *first1, const char *last1);
wxString& replace(iterator first, iterator last,
- const wchar_t *first1, const wchar_t *last1);
+ const wchar_t *first1, const wchar_t *last1);
size_t rfind(const wxString& str, size_t nStart = npos) const;
size_t rfind(const char* sz, size_t nStart = npos, size_t n = npos) const;
size_t rfind(const wchar_t* sz, size_t nStart = npos, size_t n = npos) const;
size_t rfind(wxUniChar ch, size_t nStart = npos) const;
+ size_type size() const;
wxString substr(size_t nStart = 0, size_t nLen = npos) const;
-
void swap(wxString& str);
-
//@}
-
};
/**
wxChar* operator wxChar *();
};
+
+/**
+ @class wxStringBuffer
+
+ This tiny class allows you to conveniently access the wxString internal buffer
+ as a writable pointer without any risk of forgetting to restore the string
+ to the usable state later.
+
+ For example, assuming you have a low-level OS function called
+ @c "GetMeaningOfLifeAsString(char *)" returning the value in the provided
+ buffer (which must be writable, of course) you might call it like this:
+
+ @code
+ wxString theAnswer;
+ GetMeaningOfLifeAsString(wxStringBuffer(theAnswer, 1024));
+ if ( theAnswer != "42" )
+ wxLogError("Something is very wrong!");
+ @endcode
+
+ Note that the exact usage of this depends on whether or not @c wxUSE_STL is
+ enabled. If @c wxUSE_STL is enabled, wxStringBuffer creates a separate empty
+ character buffer, and if @c wxUSE_STL is disabled, it uses GetWriteBuf() from
+ wxString, keeping the same buffer wxString uses intact. In other words,
+ relying on wxStringBuffer containing the old wxString data is not a good
+ idea if you want to build your program both with and without @c wxUSE_STL.
+
+ @library{wxbase}
+ @category{data}
+*/
+class wxStringBuffer
+{
+public:
+ /**
+ Constructs a writable string buffer object associated with the given string
+ and containing enough space for at least @a len characters.
+ Basically, this is equivalent to calling wxString::GetWriteBuf() and
+ saving the result.
+ */
+ wxStringBuffer(const wxString& str, size_t len);
+
+ /**
+ Restores the string passed to the constructor to the usable state by calling
+ wxString::UngetWriteBuf() on it.
+ */
+ ~wxStringBuffer();
+
+ /**
+ Returns the writable pointer to a buffer of the size at least equal to the
+ length specified in the constructor.
+ */
+ wxStringCharType* operator wxStringCharType *();
+};
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