X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/9d653e810c23660d41b1e9e6cfc64646d9ceef2d..ea5af9c5356676a5c4d81b4d4915ad32ca3c9c6e:/include/wx/strconv.h

diff --git a/include/wx/strconv.h b/include/wx/strconv.h
index 86cb9d29fc..148eeb01e0 100644
--- a/include/wx/strconv.h
+++ b/include/wx/strconv.h
@@ -95,15 +95,18 @@ public:
     // Convenience functions for converting strings which may contain embedded
     // NULs and don't have to be NUL-terminated.
     //
-    // inLen is the length of the buffer including trailing NUL if any: if the
-    // last 4 bytes of the buffer are all NULs, these functions are more
-    // efficient as they avoid copying the string, but otherwise a copy is made
-    // internally which could be quite bad for (very) long strings.
+    // inLen is the length of the buffer including trailing NUL if any or
+    // wxNO_LEN if the input is NUL-terminated.
     //
     // outLen receives, if not NULL, the length of the converted string or 0 if
     // the conversion failed (returning 0 and not -1 in this case makes it
     // difficult to distinguish between failed conversion and empty input but
-    // this is done for backwards compatibility)
+    // this is done for backwards compatibility). Notice that the rules for
+    // whether outLen accounts or not for the last NUL are the same as for
+    // To/FromWChar() above: if inLen is specified, outLen is exactly the
+    // number of characters converted, whether the last one of them was NUL or
+    // not. But if inLen == wxNO_LEN then outLen doesn't account for the last
+    // NUL even though it is present.
     const wxWCharBuffer
         cMB2WC(const char *in, size_t inLen, size_t *outLen) const;
     const wxCharBuffer
@@ -264,16 +267,19 @@ public:
 private:
     // UTF-7 decoder/encoder may be in direct mode or in shifted mode after a
     // '+' (and until the '-' or any other non-base64 character)
-    enum Mode
+    struct StateMode
     {
-        Direct,     // pass through state
-        Shifted     // after a '+' (and before '-')
+        enum Mode
+        {
+            Direct,     // pass through state
+            Shifted     // after a '+' (and before '-')
+        };
     };
 
     // the current decoder state: this is only used by ToWChar() if srcLen
     // parameter is not wxNO_LEN, when working on the entire NUL-terminated
     // strings we neither update nor use the state
-    class DecoderState
+    class DecoderState : StateMode
     {
     private:
         // current state: this one is private as we want to enforce the use of
@@ -305,7 +311,7 @@ private:
 
     // encoder state is simpler as we always receive entire Unicode characters
     // on input
-    class EncoderState
+    class EncoderState : StateMode
     {
     private:
         Mode mode;
@@ -497,8 +503,6 @@ public:
                            const char *src, size_t srcLen = wxNO_LEN) const;
     virtual size_t FromWChar(char *dst, size_t dstLen,
                              const wchar_t *src, size_t srcLen = wxNO_LEN) const;
-    virtual size_t MB2WC(wchar_t *outputBuf, const char *psz, size_t outputSize) const;
-    virtual size_t WC2MB(char *outputBuf, const wchar_t *psz, size_t outputSize) const;
     virtual size_t GetMBNulLen() const;
 
 #if wxUSE_UNICODE_UTF8
@@ -509,7 +513,7 @@ public:
 
     void Clear();
 
-    // return true if the conversion could be initilized successfully
+    // return true if the conversion could be initialized successfully
     bool IsOk() const;
 
 private:
@@ -523,13 +527,19 @@ private:
     wxMBConv *DoCreate() const;
 
     // set the name (may be only called when m_name == NULL), makes copy of
-    // charset string
+    // the charset string
     void SetName(const char *charset);
 
 
+    // m_name may be NULL in which case m_encoding should be used
+    //
     // note that we can't use wxString here because of compilation
     // dependencies: we're included from wx/string.h
     char *m_name;
+
+    // may be wxFONTENCODING_SYSTEM in which case m_name is used
+    //
+    // if m_name is NULL, then we should use the default system encoding
     wxFontEncoding m_encoding;
 
     // use CreateConvIfNeeded() before accessing m_convReal!
@@ -621,7 +631,7 @@ extern WXDLLIMPEXP_DATA_BASE(wxMBConv *) wxConvUI;
     #define wxFNCONV(name) wxConvFileName->cWX2MB(name)
     #define wxFNSTRINGCAST wxMBSTRINGCAST
 #else
-#if defined( __WXOSX__ ) && wxMBFILES
+#if defined( __WXOSX_OR_COCOA__ ) && wxMBFILES
     #define wxFNCONV(name) wxConvFileName->cWC2MB( wxConvLocal.cWX2WC(name) )
 #else
     #define wxFNCONV(name) name