X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/0c93d67c86f1a52cfc9c8fd1ca68ab1de499863a..f2b7be7ad53d6147287ca97807774824167ddd0d:/src/common/intl.cpp?ds=sidebyside

diff --git a/src/common/intl.cpp b/src/common/intl.cpp
index 8dcb64784c..ad9d29f161 100644
--- a/src/common/intl.cpp
+++ b/src/common/intl.cpp
@@ -1,8 +1,9 @@
 /////////////////////////////////////////////////////////////////////////////
 // Name:        src/common/intl.cpp
-// Purpose:     Internationalization and localisation for wxWindows
+// Purpose:     Internationalization and localisation for wxWidgets
 // Author:      Vadim Zeitlin
-// Modified by:
+// Modified by: Michael N. Filippov <michael@idisys.iae.nsk.su>
+//              (2003/09/30 - PluralForms support)
 // Created:     29/01/98
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
@@ -21,6 +22,18 @@
     #pragma implementation "intl.h"
 #endif
 
+#if defined(__BORLAND__) && !defined(__WXDEBUG__)
+    // There's a bug in Borland's compiler that breaks wxLocale with -O2,
+    // so make sure that flag is not used for this file:
+    #pragma option -O1
+#endif
+
+#ifdef __EMX__
+// The following define is needed by Innotek's libc to
+// make the definition of struct localeconv available.
+#define __INTERNAL_DEFS
+#endif
+
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
@@ -42,7 +55,7 @@
   #include <langinfo.h>
 #endif
 
-// wxWindows
+// wxWidgets
 #ifndef WX_PRECOMP
     #include "wx/string.h"
     #include "wx/intl.h"
@@ -64,6 +77,7 @@
 #include "wx/fontmap.h"
 #include "wx/encconv.h"
 #include "wx/hashmap.h"
+#include "wx/ptr_scpd.h"
 
 #if defined(__WXMAC__)
   #include  "wx/mac/private.h"  // includes mac headers
@@ -145,6 +159,713 @@ static inline wxString ExtractNotLang(const wxString& langFull)
 #endif // __UNIX__
 
 
+// ----------------------------------------------------------------------------
+// Plural forms parser
+// ----------------------------------------------------------------------------
+
+/*
+                                Simplified Grammar
+
+Expression:
+    LogicalOrExpression '?' Expression ':' Expression
+    LogicalOrExpression
+
+LogicalOrExpression:
+    LogicalAndExpression "||" LogicalOrExpression   // to (a || b) || c
+    LogicalAndExpression
+
+LogicalAndExpression:
+    EqualityExpression "&&" LogicalAndExpression    // to (a && b) && c
+    EqualityExpression
+
+EqualityExpression:
+    RelationalExpression "==" RelationalExperession
+    RelationalExpression "!=" RelationalExperession
+    RelationalExpression
+
+RelationalExpression:
+    MultiplicativeExpression '>' MultiplicativeExpression
+    MultiplicativeExpression '<' MultiplicativeExpression
+    MultiplicativeExpression ">=" MultiplicativeExpression
+    MultiplicativeExpression "<=" MultiplicativeExpression
+    MultiplicativeExpression
+
+MultiplicativeExpression:
+    PmExpression '%' PmExpression
+    PmExpression
+
+PmExpression:
+    N
+    Number
+    '(' Expression ')'
+*/
+
+class wxPluralFormsToken
+{
+public:
+    enum Type
+    {
+        T_ERROR, T_EOF, T_NUMBER, T_N, T_PLURAL, T_NPLURALS, T_EQUAL, T_ASSIGN,
+        T_GREATER, T_GREATER_OR_EQUAL, T_LESS, T_LESS_OR_EQUAL,
+        T_REMINDER, T_NOT_EQUAL,
+        T_LOGICAL_AND, T_LOGICAL_OR, T_QUESTION, T_COLON, T_SEMICOLON,
+        T_LEFT_BRACKET, T_RIGHT_BRACKET
+    };
+    Type type() const { return m_type; }
+    void setType(Type type) { m_type = type; }
+    // for T_NUMBER only
+    typedef int Number;
+    Number number() const { return m_number; }
+    void setNumber(Number num) { m_number = num; }
+private:
+    Type m_type;
+    Number m_number;
+};
+
+
+class wxPluralFormsScanner
+{
+public:
+    wxPluralFormsScanner(const char* s);
+    const wxPluralFormsToken& token() const { return m_token; }
+    bool nextToken();  // returns false if error
+private:
+    const char* m_s;
+    wxPluralFormsToken m_token;
+};
+
+wxPluralFormsScanner::wxPluralFormsScanner(const char* s) : m_s(s)
+{
+    nextToken();
+}
+
+bool wxPluralFormsScanner::nextToken()
+{
+    wxPluralFormsToken::Type type = wxPluralFormsToken::T_ERROR;
+    while (isspace(*m_s))
+    {
+        ++m_s;
+    }
+    if (*m_s == 0)
+    {
+        type = wxPluralFormsToken::T_EOF;
+    }
+    else if (isdigit(*m_s))
+    {
+        wxPluralFormsToken::Number number = *m_s++ - '0';
+        while (isdigit(*m_s))
+        {
+            number = number * 10 + (*m_s++ - '0');
+        }
+        m_token.setNumber(number);
+        type = wxPluralFormsToken::T_NUMBER;
+    }
+    else if (isalpha(*m_s))
+    {
+        const char* begin = m_s++;
+        while (isalnum(*m_s))
+        {
+            ++m_s;
+        }
+        size_t size = m_s - begin;
+        if (size == 1 && memcmp(begin, "n", size) == 0)
+        {
+            type = wxPluralFormsToken::T_N;
+        }
+        else if (size == 6 && memcmp(begin, "plural", size) == 0)
+        {
+            type = wxPluralFormsToken::T_PLURAL;
+        }
+        else if (size == 8 && memcmp(begin, "nplurals", size) == 0)
+        {
+            type = wxPluralFormsToken::T_NPLURALS;
+        }
+    }
+    else if (*m_s == '=')
+    {
+        ++m_s;
+        if (*m_s == '=')
+        {
+            ++m_s;
+            type = wxPluralFormsToken::T_EQUAL;
+        }
+        else
+        {
+            type = wxPluralFormsToken::T_ASSIGN;
+        }
+    }
+    else if (*m_s == '>')
+    {
+        ++m_s;
+        if (*m_s == '=')
+        {
+            ++m_s;
+            type = wxPluralFormsToken::T_GREATER_OR_EQUAL;
+        }
+        else
+        {
+            type = wxPluralFormsToken::T_GREATER;
+        }
+    }
+    else if (*m_s == '<')
+    {
+        ++m_s;
+        if (*m_s == '=')
+        {
+            ++m_s;
+            type = wxPluralFormsToken::T_LESS_OR_EQUAL;
+        }
+        else
+        {
+            type = wxPluralFormsToken::T_LESS;
+        }
+    }
+    else if (*m_s == '%')
+    {
+        ++m_s;
+        type = wxPluralFormsToken::T_REMINDER;
+    }
+    else if (*m_s == '!' && m_s[1] == '=')
+    {
+        m_s += 2;
+        type = wxPluralFormsToken::T_NOT_EQUAL;
+    }
+    else if (*m_s == '&' && m_s[1] == '&')
+    {
+        m_s += 2;
+        type = wxPluralFormsToken::T_LOGICAL_AND;
+    }
+    else if (*m_s == '|' && m_s[1] == '|')
+    {
+        m_s += 2;
+        type = wxPluralFormsToken::T_LOGICAL_OR;
+    }
+    else if (*m_s == '?')
+    {
+        ++m_s;
+        type = wxPluralFormsToken::T_QUESTION;
+    }
+    else if (*m_s == ':')
+    {
+        ++m_s;
+        type = wxPluralFormsToken::T_COLON;
+    } else if (*m_s == ';') {
+        ++m_s;
+        type = wxPluralFormsToken::T_SEMICOLON;
+    }
+    else if (*m_s == '(')
+    {
+        ++m_s;
+        type = wxPluralFormsToken::T_LEFT_BRACKET;
+    }
+    else if (*m_s == ')')
+    {
+        ++m_s;
+        type = wxPluralFormsToken::T_RIGHT_BRACKET;
+    }
+    m_token.setType(type);
+    return type != wxPluralFormsToken::T_ERROR;
+}
+
+class wxPluralFormsNode;
+
+// NB: Can't use wxDEFINE_SCOPED_PTR_TYPE because wxPluralFormsNode is not
+//     fully defined yet:
+class wxPluralFormsNodePtr
+{
+public:
+    wxPluralFormsNodePtr(wxPluralFormsNode *p = NULL) : m_p(p) {}
+    ~wxPluralFormsNodePtr();
+    wxPluralFormsNode& operator*() const { return *m_p; }
+    wxPluralFormsNode* operator->() const { return m_p; }
+    wxPluralFormsNode* get() const { return m_p; }
+    wxPluralFormsNode* release();
+    void reset(wxPluralFormsNode *p);
+
+private:
+    wxPluralFormsNode *m_p;
+};
+
+class wxPluralFormsNode
+{
+public:
+    wxPluralFormsNode(const wxPluralFormsToken& token) : m_token(token) {}
+    const wxPluralFormsToken& token() const { return m_token; }
+    const wxPluralFormsNode* node(size_t i) const
+        { return m_nodes[i].get(); }
+    void setNode(size_t i, wxPluralFormsNode* n);
+    wxPluralFormsNode* releaseNode(size_t i);
+    wxPluralFormsToken::Number evaluate(wxPluralFormsToken::Number n) const;
+
+private:
+    wxPluralFormsToken m_token;
+    wxPluralFormsNodePtr m_nodes[3];
+};
+
+wxPluralFormsNodePtr::~wxPluralFormsNodePtr()
+{
+    delete m_p;
+}
+wxPluralFormsNode* wxPluralFormsNodePtr::release()
+{
+    wxPluralFormsNode *p = m_p;
+    m_p = NULL;
+    return p;
+}
+void wxPluralFormsNodePtr::reset(wxPluralFormsNode *p)
+{
+    if (p != m_p)
+    {
+        delete m_p;
+        m_p = p;
+    }
+}
+
+
+void wxPluralFormsNode::setNode(size_t i, wxPluralFormsNode* n)
+{
+    m_nodes[i].reset(n);
+}
+
+wxPluralFormsNode*  wxPluralFormsNode::releaseNode(size_t i)
+{
+    return m_nodes[i].release();
+}
+
+wxPluralFormsToken::Number
+wxPluralFormsNode::evaluate(wxPluralFormsToken::Number n) const
+{
+    switch (token().type())
+    {
+        // leaf
+        case wxPluralFormsToken::T_NUMBER:
+            return token().number();
+        case wxPluralFormsToken::T_N:
+            return n;
+        // 2 args
+        case wxPluralFormsToken::T_EQUAL:
+            return node(0)->evaluate(n) == node(1)->evaluate(n);
+        case wxPluralFormsToken::T_NOT_EQUAL:
+            return node(0)->evaluate(n) != node(1)->evaluate(n);
+        case wxPluralFormsToken::T_GREATER:
+            return node(0)->evaluate(n) > node(1)->evaluate(n);
+        case wxPluralFormsToken::T_GREATER_OR_EQUAL:
+            return node(0)->evaluate(n) >= node(1)->evaluate(n);
+        case wxPluralFormsToken::T_LESS:
+            return node(0)->evaluate(n) < node(1)->evaluate(n);
+        case wxPluralFormsToken::T_LESS_OR_EQUAL:
+            return node(0)->evaluate(n) <= node(1)->evaluate(n);
+        case wxPluralFormsToken::T_REMINDER:
+            {
+                wxPluralFormsToken::Number number = node(1)->evaluate(n);
+                if (number != 0)
+                {
+                    return node(0)->evaluate(n) % number;
+                }
+                else
+                {
+                    return 0;
+                }
+            }
+        case wxPluralFormsToken::T_LOGICAL_AND:
+            return node(0)->evaluate(n) && node(1)->evaluate(n);
+        case wxPluralFormsToken::T_LOGICAL_OR:
+            return node(0)->evaluate(n) || node(1)->evaluate(n);
+        // 3 args
+        case wxPluralFormsToken::T_QUESTION:
+            return node(0)->evaluate(n)
+                ? node(1)->evaluate(n)
+                : node(2)->evaluate(n);
+        default:
+            return 0;
+    }
+}
+
+
+class wxPluralFormsCalculator
+{
+public:
+    wxPluralFormsCalculator() : m_nplurals(0), m_plural(0) {}
+
+    // input: number, returns msgstr index
+    int evaluate(int n) const;
+
+    // input: text after "Plural-Forms:" (e.g. "nplurals=2; plural=(n != 1);"),
+    // if s == 0, creates default handler
+    // returns 0 if error
+    static wxPluralFormsCalculator* make(const char* s = 0);
+
+    ~wxPluralFormsCalculator() {}
+
+    void  init(wxPluralFormsToken::Number nplurals, wxPluralFormsNode* plural);
+    wxString getString() const;
+
+private:
+    wxPluralFormsToken::Number m_nplurals;
+    wxPluralFormsNodePtr m_plural;
+};
+
+wxDEFINE_SCOPED_PTR_TYPE(wxPluralFormsCalculator);
+
+void wxPluralFormsCalculator::init(wxPluralFormsToken::Number nplurals,
+                                   wxPluralFormsNode* plural)
+{
+    m_nplurals = nplurals;
+    m_plural.reset(plural);
+}
+
+int wxPluralFormsCalculator::evaluate(int n) const
+{
+    if (m_plural.get() == 0)
+    {
+        return 0;
+    }
+    wxPluralFormsToken::Number number = m_plural->evaluate(n);
+    if (number < 0 || number > m_nplurals)
+    {
+        return 0;
+    }
+    return number;
+}
+
+
+class wxPluralFormsParser
+{
+public:
+    wxPluralFormsParser(wxPluralFormsScanner& scanner) : m_scanner(scanner) {}
+    bool parse(wxPluralFormsCalculator& rCalculator);
+
+private:
+    wxPluralFormsNode* parsePlural();
+    // stops at T_SEMICOLON, returns 0 if error
+    wxPluralFormsScanner& m_scanner;
+    const wxPluralFormsToken& token() const;
+    bool nextToken();
+
+    wxPluralFormsNode* expression();
+    wxPluralFormsNode* logicalOrExpression();
+    wxPluralFormsNode* logicalAndExpression();
+    wxPluralFormsNode* equalityExpression();
+    wxPluralFormsNode* multiplicativeExpression();
+    wxPluralFormsNode* relationalExpression();
+    wxPluralFormsNode* pmExpression();
+};
+
+bool wxPluralFormsParser::parse(wxPluralFormsCalculator& rCalculator)
+{
+    if (token().type() != wxPluralFormsToken::T_NPLURALS)
+        return false;
+    if (!nextToken())
+        return false;
+    if (token().type() != wxPluralFormsToken::T_ASSIGN)
+        return false;
+    if (!nextToken())
+        return false;
+    if (token().type() != wxPluralFormsToken::T_NUMBER)
+        return false;
+    wxPluralFormsToken::Number nplurals = token().number();
+    if (!nextToken())
+        return false;
+    if (token().type() != wxPluralFormsToken::T_SEMICOLON)
+        return false;
+    if (!nextToken())
+        return false;
+    if (token().type() != wxPluralFormsToken::T_PLURAL)
+        return false;
+    if (!nextToken())
+        return false;
+    if (token().type() != wxPluralFormsToken::T_ASSIGN)
+        return false;
+    if (!nextToken())
+        return false;
+    wxPluralFormsNode* plural = parsePlural();
+    if (plural == 0)
+        return false;
+    if (token().type() != wxPluralFormsToken::T_SEMICOLON)
+        return false;
+    if (!nextToken())
+        return false;
+    if (token().type() != wxPluralFormsToken::T_EOF)
+        return false;
+    rCalculator.init(nplurals, plural);
+    return true;
+}
+
+wxPluralFormsNode* wxPluralFormsParser::parsePlural()
+{
+    wxPluralFormsNode* p = expression();
+    if (p == NULL)
+    {
+        return NULL;
+    }
+    wxPluralFormsNodePtr n(p);
+    if (token().type() != wxPluralFormsToken::T_SEMICOLON)
+    {
+        return NULL;
+    }
+    return n.release();
+}
+
+const wxPluralFormsToken& wxPluralFormsParser::token() const
+{
+    return m_scanner.token();
+}
+
+bool wxPluralFormsParser::nextToken()
+{
+    if (!m_scanner.nextToken())
+        return false;
+    return true;
+}
+
+wxPluralFormsNode* wxPluralFormsParser::expression()
+{
+    wxPluralFormsNode* p = logicalOrExpression();
+    if (p == NULL)
+        return NULL;
+    wxPluralFormsNodePtr n(p);
+    if (token().type() == wxPluralFormsToken::T_QUESTION)
+    {
+        wxPluralFormsNodePtr qn(new wxPluralFormsNode(token()));
+        if (!nextToken())
+        {
+            return 0;
+        }
+        p = expression();
+        if (p == 0)
+        {
+            return 0;
+        }
+        qn->setNode(1, p);
+        if (token().type() != wxPluralFormsToken::T_COLON)
+        {
+            return 0;
+        }
+        if (!nextToken())
+        {
+            return 0;
+        }
+        p = expression();
+        if (p == 0)
+        {
+            return 0;
+        }
+        qn->setNode(2, p);
+        qn->setNode(0, n.release());
+        return qn.release();
+    }
+    return n.release();
+}
+
+wxPluralFormsNode*wxPluralFormsParser::logicalOrExpression()
+{
+    wxPluralFormsNode* p = logicalAndExpression();
+    if (p == NULL)
+        return NULL;
+    wxPluralFormsNodePtr ln(p);
+    if (token().type() == wxPluralFormsToken::T_LOGICAL_OR)
+    {
+        wxPluralFormsNodePtr un(new wxPluralFormsNode(token()));
+        if (!nextToken())
+        {
+            return 0;
+        }
+        p = logicalOrExpression();
+        if (p == 0)
+        {
+            return 0;
+        }
+        wxPluralFormsNodePtr rn(p);    // right
+        if (rn->token().type() == wxPluralFormsToken::T_LOGICAL_OR)
+        {
+            // see logicalAndExpression comment
+            un->setNode(0, ln.release());
+            un->setNode(1, rn->releaseNode(0));
+            rn->setNode(0, un.release());
+            return rn.release();
+        }
+
+
+        un->setNode(0, ln.release());
+        un->setNode(1, rn.release());
+        return un.release();
+    }
+    return ln.release();
+}
+
+wxPluralFormsNode* wxPluralFormsParser::logicalAndExpression()
+{
+    wxPluralFormsNode* p = equalityExpression();
+    if (p == NULL)
+        return NULL;
+    wxPluralFormsNodePtr ln(p);   // left
+    if (token().type() == wxPluralFormsToken::T_LOGICAL_AND)
+    {
+        wxPluralFormsNodePtr un(new wxPluralFormsNode(token()));  // up
+        if (!nextToken())
+        {
+            return NULL;
+        }
+        p = logicalAndExpression();
+        if (p == 0)
+        {
+            return NULL;
+        }
+        wxPluralFormsNodePtr rn(p);    // right
+        if (rn->token().type() == wxPluralFormsToken::T_LOGICAL_AND)
+        {
+// transform 1 && (2 && 3) -> (1 && 2) && 3
+//     u                  r
+// l       r     ->   u      3
+//       2   3      l   2
+            un->setNode(0, ln.release());
+            un->setNode(1, rn->releaseNode(0));
+            rn->setNode(0, un.release());
+            return rn.release();
+        }
+
+        un->setNode(0, ln.release());
+        un->setNode(1, rn.release());
+        return un.release();
+    }
+    return ln.release();
+}
+
+wxPluralFormsNode* wxPluralFormsParser::equalityExpression()
+{
+    wxPluralFormsNode* p = relationalExpression();
+    if (p == NULL)
+        return NULL;
+    wxPluralFormsNodePtr n(p);
+    if (token().type() == wxPluralFormsToken::T_EQUAL
+        || token().type() == wxPluralFormsToken::T_NOT_EQUAL)
+    {
+        wxPluralFormsNodePtr qn(new wxPluralFormsNode(token()));
+        if (!nextToken())
+        {
+            return NULL;
+        }
+        p = relationalExpression();
+        if (p == NULL)
+        {
+            return NULL;
+        }
+        qn->setNode(1, p);
+        qn->setNode(0, n.release());
+        return qn.release();
+    }
+    return n.release();
+}
+
+wxPluralFormsNode* wxPluralFormsParser::relationalExpression()
+{
+    wxPluralFormsNode* p = multiplicativeExpression();
+    if (p == NULL)
+        return NULL;
+    wxPluralFormsNodePtr n(p);
+    if (token().type() == wxPluralFormsToken::T_GREATER
+            || token().type() == wxPluralFormsToken::T_LESS
+            || token().type() == wxPluralFormsToken::T_GREATER_OR_EQUAL
+            || token().type() == wxPluralFormsToken::T_LESS_OR_EQUAL)
+    {
+        wxPluralFormsNodePtr qn(new wxPluralFormsNode(token()));
+        if (!nextToken())
+        {
+            return NULL;
+        }
+        p = multiplicativeExpression();
+        if (p == NULL)
+        {
+            return NULL;
+        }
+        qn->setNode(1, p);
+        qn->setNode(0, n.release());
+        return qn.release();
+    }
+    return n.release();
+}
+
+wxPluralFormsNode* wxPluralFormsParser::multiplicativeExpression()
+{
+    wxPluralFormsNode* p = pmExpression();
+    if (p == NULL)
+        return NULL;
+    wxPluralFormsNodePtr n(p);
+    if (token().type() == wxPluralFormsToken::T_REMINDER)
+    {
+        wxPluralFormsNodePtr qn(new wxPluralFormsNode(token()));
+        if (!nextToken())
+        {
+            return NULL;
+        }
+        p = pmExpression();
+        if (p == NULL)
+        {
+            return NULL;
+        }
+        qn->setNode(1, p);
+        qn->setNode(0, n.release());
+        return qn.release();
+    }
+    return n.release();
+}
+
+wxPluralFormsNode* wxPluralFormsParser::pmExpression()
+{
+    wxPluralFormsNodePtr n;
+    if (token().type() == wxPluralFormsToken::T_N
+        || token().type() == wxPluralFormsToken::T_NUMBER)
+    {
+        n.reset(new wxPluralFormsNode(token()));
+        if (!nextToken())
+        {
+            return NULL;
+        }
+    }
+    else if (token().type() == wxPluralFormsToken::T_LEFT_BRACKET) {
+        if (!nextToken())
+        {
+            return NULL;
+        }
+        wxPluralFormsNode* p = expression();
+        if (p == NULL)
+        {
+            return NULL;
+        }
+        n.reset(p);
+        if (token().type() != wxPluralFormsToken::T_RIGHT_BRACKET)
+        {
+            return NULL;
+        }
+        if (!nextToken())
+        {
+            return NULL;
+        }
+    }
+    else
+    {
+        return NULL;
+    }
+    return n.release();
+}
+
+wxPluralFormsCalculator* wxPluralFormsCalculator::make(const char* s)
+{
+    wxPluralFormsCalculatorPtr calculator(new wxPluralFormsCalculator);
+    if (s != NULL)
+    {
+        wxPluralFormsScanner scanner(s);
+        wxPluralFormsParser p(scanner);
+        if (!p.parse(*calculator))
+        {
+            return NULL;
+        }
+    }
+    return calculator.release();
+}
+
+
+
 
 // ----------------------------------------------------------------------------
 // wxMsgCatalogFile corresponds to one disk-file message catalog.
@@ -162,10 +883,12 @@ public:
    ~wxMsgCatalogFile();
 
     // load the catalog from disk (szDirPrefix corresponds to language)
-    bool Load(const wxChar *szDirPrefix, const wxChar *szName);
+    bool Load(const wxChar *szDirPrefix, const wxChar *szName,
+              wxPluralFormsCalculatorPtr& rPluralFormsCalculator);
 
     // fills the hash with string-translation pairs
-    void FillHash(wxMessagesHash& hash, bool convertEncoding) const;
+    void FillHash(wxMessagesHash& hash, const wxString& msgIdCharset,
+                  bool convertEncoding) const;
 
 private:
     // this implementation is binary compatible with GNU gettext() version 0.10
@@ -200,6 +923,8 @@ private:
     wxMsgTableEntry  *m_pOrigTable,   // pointer to original   strings
                      *m_pTransTable;  //            translated
 
+    wxString m_charset;
+
     // swap the 2 halves of 32 bit integer if needed
     size_t32 Swap(size_t32 ui) const
     {
@@ -215,13 +940,13 @@ private:
         // this check could fail for a corrupt message catalog
         size_t32 ofsString = Swap(ent->ofsString);
         if ( ofsString + Swap(ent->nLen) > m_nSize)
+        {
             return NULL;
+        }
 
         return (const char *)(m_pData + ofsString);
     }
 
-    wxString GetCharset() const;
-
     bool m_bSwapped;   // wrong endianness?
 
     DECLARE_NO_COPY_CLASS(wxMsgCatalogFile)
@@ -239,13 +964,14 @@ class wxMsgCatalog
 {
 public:
     // load the catalog from disk (szDirPrefix corresponds to language)
-    bool Load(const wxChar *szDirPrefix, const wxChar *szName, bool bConvertEncoding = FALSE);
+    bool Load(const wxChar *szDirPrefix, const wxChar *szName,
+              const wxChar *msgIdCharset = NULL, bool bConvertEncoding = false);
 
     // get name of the catalog
     wxString GetName() const { return m_name; }
 
     // get the translated string: returns NULL if not found
-    const wxChar *GetString(const wxChar *sz) const;
+    const wxChar *GetString(const wxChar *sz, size_t n = size_t(-1)) const;
 
     // public variable pointing to the next element in a linked list (or NULL)
     wxMsgCatalog *m_pNext;
@@ -253,6 +979,7 @@ public:
 private:
     wxMessagesHash  m_messages; // all messages in the catalog
     wxString        m_name;     // name of the domain
+    wxPluralFormsCalculatorPtr  m_pluralFormsCalculator;
 };
 
 // ----------------------------------------------------------------------------
@@ -310,6 +1037,8 @@ static wxString GetFullSearchPath(const wxChar *lang)
                    << wxPATH_SEP;
     }
 
+    // TODO: use wxStandardPaths instead of all this mess!!
+
     // LC_PATH is a standard env var containing the search path for the .mo
     // files
 #ifndef __WXWINCE__
@@ -329,28 +1058,31 @@ static wxString GetFullSearchPath(const wxChar *lang)
 
     // then take the current directory
     // FIXME it should be the directory of the executable
-#ifdef __WXMAC__
-    wxChar cwd[512] ;
-    wxGetWorkingDirectory( cwd , sizeof( cwd ) ) ;
-    searchPath << GetAllMsgCatalogSubdirs(cwd, lang);
+#if defined(__WXMAC__)
+    searchPath << GetAllMsgCatalogSubdirs(wxGetCwd(), lang);
     // generic search paths could be somewhere in the system folder preferences
-#else // !Mac
+#elif defined(__WXMSW__)
+    // look in the directory of the executable
+    wxString path;
+    wxSplitPath(wxGetFullModuleName(), &path, NULL, NULL);
+    searchPath << GetAllMsgCatalogSubdirs(path, lang);
+#else // !Mac, !MSW
     searchPath << GetAllMsgCatalogSubdirs(wxT("."), lang);
-
 #endif // platform
 
     return searchPath;
 }
 
 // open disk file and read in it's contents
-bool wxMsgCatalogFile::Load(const wxChar *szDirPrefix, const wxChar *szName0)
+bool wxMsgCatalogFile::Load(const wxChar *szDirPrefix, const wxChar *szName0,
+                            wxPluralFormsCalculatorPtr& rPluralFormsCalculator)
 {
    /* We need to handle locales like  de_AT.iso-8859-1
       For this we first chop off the .CHARSET specifier and ignore it.
       FIXME: UNICODE SUPPORT: must use CHARSET specifier!
    */
    wxString szName = szName0;
-   if(szName.Find(wxT('.')) != -1) // contains a dot
+   if(szName.Find(wxT('.')) != wxNOT_FOUND) // contains a dot
       szName = szName.Left(szName.Find(wxT('.')));
 
   wxString searchPath = GetFullSearchPath(szDirPrefix);
@@ -380,7 +1112,7 @@ bool wxMsgCatalogFile::Load(const wxChar *szDirPrefix, const wxChar *szName0)
   wxString strFullName;
   if ( !wxFindFileInPath(&strFullName, searchPath, strFile) ) {
     wxLogVerbose(_("catalog file for domain '%s' not found."), szName.c_str());
-    return FALSE;
+    return false;
   }
 
   // open file
@@ -389,22 +1121,22 @@ bool wxMsgCatalogFile::Load(const wxChar *szDirPrefix, const wxChar *szName0)
 
   wxFile fileMsg(strFullName);
   if ( !fileMsg.IsOpened() )
-    return FALSE;
+    return false;
 
-  // get the file size
-  off_t nSize = fileMsg.Length();
+  // get the file size (assume it is less than 4Gb...)
+  wxFileOffset nSize = fileMsg.Length();
   if ( nSize == wxInvalidOffset )
-    return FALSE;
+    return false;
 
   // read the whole file in memory
   m_pData = new size_t8[nSize];
-  if ( fileMsg.Read(m_pData, nSize) != nSize ) {
+  if ( fileMsg.Read(m_pData, (size_t)nSize) != nSize ) {
     wxDELETEA(m_pData);
-    return FALSE;
+    return false;
   }
 
   // examine header
-  bool bValid = (size_t)nSize > sizeof(wxMsgCatalogHeader);
+  bool bValid = nSize + (size_t)0 > sizeof(wxMsgCatalogHeader);
 
   wxMsgCatalogHeader *pHeader = (wxMsgCatalogHeader *)m_pData;
   if ( bValid ) {
@@ -420,7 +1152,7 @@ bool wxMsgCatalogFile::Load(const wxChar *szDirPrefix, const wxChar *szName0)
     wxLogWarning(_("'%s' is not a valid message catalog."), strFullName.c_str());
 
     wxDELETEA(m_pData);
-    return FALSE;
+    return false;
   }
 
   // initialize
@@ -429,49 +1161,92 @@ bool wxMsgCatalogFile::Load(const wxChar *szDirPrefix, const wxChar *szName0)
                    Swap(pHeader->ofsOrigTable));
   m_pTransTable = (wxMsgTableEntry *)(m_pData +
                    Swap(pHeader->ofsTransTable));
-  m_nSize = nSize;
+  m_nSize = (size_t32)nSize;
+
+  // now parse catalog's header and try to extract catalog charset and
+  // plural forms formula from it:
+
+  const char* headerData = StringAtOfs(m_pOrigTable, 0);
+  if (headerData && headerData[0] == 0)
+  {
+      // Extract the charset:
+      wxString header = wxString::FromAscii(StringAtOfs(m_pTransTable, 0));
+      int begin = header.Find(wxT("Content-Type: text/plain; charset="));
+      if (begin != wxNOT_FOUND)
+      {
+          begin += 34; //strlen("Content-Type: text/plain; charset=")
+          size_t end = header.find('\n', begin);
+          if (end != size_t(-1))
+          {
+              m_charset.assign(header, begin, end - begin);
+              if (m_charset == wxT("CHARSET"))
+              {
+                  // "CHARSET" is not valid charset, but lazy translator
+                  m_charset.Clear();
+              }
+          }
+      }
+      // else: incorrectly filled Content-Type header
+
+      // Extract plural forms:
+      begin = header.Find(wxT("Plural-Forms:"));
+      if (begin != wxNOT_FOUND)
+      {
+          begin += 13;
+          size_t end = header.find('\n', begin);
+          if (end != size_t(-1))
+          {
+              wxString pfs(header, begin, end - begin);
+              wxPluralFormsCalculator* pCalculator = wxPluralFormsCalculator
+                  ::make(pfs.ToAscii());
+              if (pCalculator != 0)
+              {
+                  rPluralFormsCalculator.reset(pCalculator);
+              }
+              else
+              {
+                   wxLogVerbose(_("Cannot parse Plural-Forms:'%s'"),
+                          pfs.c_str());
+              }
+          }
+      }
+      if (rPluralFormsCalculator.get() == NULL)
+      {
+          rPluralFormsCalculator.reset(wxPluralFormsCalculator::make());
+      }
+  }
 
   // everything is fine
-  return TRUE;
+  return true;
 }
 
-void wxMsgCatalogFile::FillHash(wxMessagesHash& hash, bool convertEncoding) const
+void wxMsgCatalogFile::FillHash(wxMessagesHash& hash,
+                                const wxString& msgIdCharset,
+                                bool convertEncoding) const
 {
-    wxString charset = GetCharset();
-
 #if wxUSE_WCHAR_T
     wxCSConv *csConv = NULL;
-    if ( !!charset )
-        csConv = new wxCSConv(charset);
+    if ( !m_charset.empty() )
+        csConv = new wxCSConv(m_charset);
 
     wxMBConv& inputConv = csConv ? *((wxMBConv*)csConv) : *wxConvCurrent;
 
-    for (size_t i = 0; i < m_numStrings; i++)
-    {
-        wxString key(StringAtOfs(m_pOrigTable, i), inputConv);
+    wxCSConv *sourceConv = NULL;
+    if ( !msgIdCharset.empty() && (m_charset != msgIdCharset) )
+        sourceConv = new wxCSConv(msgIdCharset);
 
-    #if wxUSE_UNICODE
-        hash[key] = wxString(StringAtOfs(m_pTransTable, i), inputConv);
-    #else
-        if ( convertEncoding )
-            hash[key] =
-                wxString(inputConv.cMB2WC(StringAtOfs(m_pTransTable, i)),
-                         wxConvLocal);
-        else
-            hash[key] = StringAtOfs(m_pTransTable, i);
-    #endif
-    }
+#elif wxUSE_FONTMAP
+    wxASSERT_MSG( msgIdCharset == NULL,
+                  _T("non-ASCII msgid languages only supported if wxUSE_WCHAR_T=1") );
 
-    delete csConv;
-#else // !wxUSE_WCHAR_T
-    #if wxUSE_FONTMAP
+    wxEncodingConverter converter;
     if ( convertEncoding )
     {
         wxFontEncoding targetEnc = wxFONTENCODING_SYSTEM;
-        wxFontEncoding enc = wxFontMapper::Get()->CharsetToEncoding(charset, FALSE);
+        wxFontEncoding enc = wxFontMapper::Get()->CharsetToEncoding(m_charset, false);
         if ( enc == wxFONTENCODING_SYSTEM )
         {
-            convertEncoding = FALSE; // unknown encoding
+            convertEncoding = false; // unknown encoding
         }
         else
         {
@@ -481,96 +1256,115 @@ void wxMsgCatalogFile::FillHash(wxMessagesHash& hash, bool convertEncoding) cons
                 wxFontEncodingArray a = wxEncodingConverter::GetPlatformEquivalents(enc);
                 if (a[0] == enc)
                     // no conversion needed, locale uses native encoding
-                    convertEncoding = FALSE;
+                    convertEncoding = false;
                 if (a.GetCount() == 0)
                     // we don't know common equiv. under this platform
-                    convertEncoding = FALSE;
+                    convertEncoding = false;
                 targetEnc = a[0];
             }
         }
 
         if ( convertEncoding )
         {
-            wxEncodingConverter converter;
             converter.Init(enc, targetEnc);
-
-            for (size_t i = 0; i < m_numStrings; i++)
-            {
-                wxString key(StringAtOfs(m_pOrigTable, i));
-                hash[key] =
-                    converter.Convert(wxString(StringAtOfs(m_pTransTable, i)));
-            }
-        }
-    }
-
-    if ( !convertEncoding )
-    #endif // wxUSE_FONTMAP/!wxUSE_FONTMAP
-    {
-        for (size_t i = 0; i < m_numStrings; i++)
-        {
-            wxString key(StringAtOfs(m_pOrigTable, i));
-            hash[key] = StringAtOfs(m_pTransTable, i);
         }
     }
 #endif // wxUSE_WCHAR_T/!wxUSE_WCHAR_T
     (void)convertEncoding; // get rid of warnings about unused parameter
-}
-
-wxString wxMsgCatalogFile::GetCharset() const
-{
-    // first, find encoding header:
-    const char *hdr = StringAtOfs(m_pOrigTable, 0);
-    if ( hdr == NULL || hdr[0] != 0 )
-    {
-        // not supported by this catalog, does not have correct header
-        return wxEmptyString;
-    }
 
-    wxString header = wxString::FromAscii( StringAtOfs(m_pTransTable, 0));
-    wxString charset;
-    int pos = header.Find(wxT("Content-Type: text/plain; charset="));
-    if ( pos == wxNOT_FOUND )
+    for (size_t i = 0; i < m_numStrings; i++)
     {
-        // incorrectly filled Content-Type header
-        return wxEmptyString;
-    }
+        const char *data = StringAtOfs(m_pOrigTable, i);
+#if wxUSE_UNICODE
+        wxString msgid(data, inputConv);
+#else
+        wxString msgid;
+#if wxUSE_WCHAR_T
+        if ( convertEncoding && sourceConv )
+            msgid = wxString(inputConv.cMB2WC(data), *sourceConv);
+        else
+#endif
+            msgid = data;
+#endif // wxUSE_UNICODE
 
-    size_t n = pos + 34; /*strlen("Content-Type: text/plain; charset=")*/
-    while ( header[n] != wxT('\n') )
-        charset << header[n++];
+        data = StringAtOfs(m_pTransTable, i);
+        size_t length = Swap(m_pTransTable[i].nLen);
+        size_t offset = 0;
+        size_t index = 0;
+        while (offset < length)
+        {
+            wxString msgstr;
+#if wxUSE_WCHAR_T
+        #if wxUSE_UNICODE
+            msgstr = wxString(data + offset, inputConv);
+        #else
+            if ( convertEncoding )
+                msgstr = wxString(inputConv.cMB2WC(data + offset), wxConvLocal);
+            else
+                msgstr = wxString(data + offset);
+        #endif
+#else // !wxUSE_WCHAR_T
+        #if wxUSE_FONTMAP
+            if ( convertEncoding )
+                msgstr = wxString(converter.Convert(data + offset));
+            else
+        #endif
+                msgstr = wxString(data + offset);
+#endif // wxUSE_WCHAR_T/!wxUSE_WCHAR_T
 
-    if ( charset == wxT("CHARSET") )
-    {
-        // "CHARSET" is not valid charset, but lazy translator
-        return wxEmptyString;
+            if ( !msgstr.empty() )
+            {
+                hash[index == 0 ? msgid : msgid + wxChar(index)] = msgstr;
+            }
+            offset += strlen(data + offset) + 1;
+            ++index;
+        }
     }
 
-    return charset;
+#if wxUSE_WCHAR_T
+    delete sourceConv;
+    delete csConv;
+#endif
 }
 
+
 // ----------------------------------------------------------------------------
 // wxMsgCatalog class
 // ----------------------------------------------------------------------------
 
 bool wxMsgCatalog::Load(const wxChar *szDirPrefix, const wxChar *szName,
-                        bool bConvertEncoding)
+                        const wxChar *msgIdCharset, bool bConvertEncoding)
 {
     wxMsgCatalogFile file;
 
     m_name = szName;
 
-    if ( file.Load(szDirPrefix, szName) )
+    if ( file.Load(szDirPrefix, szName, m_pluralFormsCalculator) )
     {
-        file.FillHash(m_messages, bConvertEncoding);
-        return TRUE;
+        file.FillHash(m_messages, msgIdCharset, bConvertEncoding);
+        return true;
     }
 
-    return FALSE;
+    return false;
 }
 
-const wxChar *wxMsgCatalog::GetString(const wxChar *sz) const
+const wxChar *wxMsgCatalog::GetString(const wxChar *sz, size_t n) const
 {
-    wxMessagesHash::const_iterator i = m_messages.find(sz);
+    int index = 0;
+    if (n != size_t(-1))
+    {
+        index = m_pluralFormsCalculator->evaluate(n);
+    }
+    wxMessagesHash::const_iterator i;
+    if (index != 0)
+    {
+        i = m_messages.find(wxString(sz) + wxChar(index));   // plural
+    }
+    else
+    {
+        i = m_messages.find(sz);
+    }
+
     if ( i != m_messages.end() )
     {
         return i->second.c_str();
@@ -605,11 +1399,15 @@ wxLanguageInfoArray *wxLocale::ms_languagesDB = NULL;
 }
 
 
-wxLocale::wxLocale()
+void wxLocale::DoCommonInit()
 {
   m_pszOldLocale = NULL;
+
+  m_pOldLocale = wxSetLocale(this);
+
   m_pMsgCat = NULL;
   m_language = wxLANGUAGE_UNKNOWN;
+  m_initialized = false;
 }
 
 // NB: this function has (desired) side effect of changing current locale
@@ -619,6 +1417,10 @@ bool wxLocale::Init(const wxChar *szName,
                     bool        bLoadDefault,
                     bool        bConvertEncoding)
 {
+  wxASSERT_MSG( !m_initialized,
+                _T("you can't call wxLocale::Init more than once") );
+
+  m_initialized = true;
   m_strLocale = szName;
   m_strShort = szShort;
   m_bConvertEncoding = bConvertEncoding;
@@ -630,7 +1432,7 @@ bool wxLocale::Init(const wxChar *szName,
     // the argument to setlocale()
     szLocale = szShort;
 
-    wxCHECK_MSG( szLocale, FALSE, _T("no locale to set in wxLocale::Init()") );
+    wxCHECK_MSG( szLocale, false, _T("no locale to set in wxLocale::Init()") );
   }
 
 #ifdef __WXWINCE__
@@ -640,7 +1442,7 @@ bool wxLocale::Init(const wxChar *szName,
       256);
   if (ret != 0)
   {
-    m_pszOldLocale = wxStrdup(localeName);      
+    m_pszOldLocale = wxStrdup(localeName);
   }
   else
     m_pszOldLocale = NULL;
@@ -648,9 +1450,11 @@ bool wxLocale::Init(const wxChar *szName,
   // TODO: how to find languageId
   // SetLocaleInfo(languageId, SORT_DEFAULT, localeName);
 #else
-  m_pszOldLocale = wxSetlocale(LC_ALL, szLocale);
-  if ( m_pszOldLocale )
-      m_pszOldLocale = wxStrdup(m_pszOldLocale);
+  wxMB2WXbuf oldLocale = wxSetlocale(LC_ALL, szLocale);
+  if ( oldLocale )
+      m_pszOldLocale = wxStrdup(oldLocale);
+  else
+      m_pszOldLocale = NULL;
 #endif
 
   if ( m_pszOldLocale == NULL )
@@ -658,10 +1462,10 @@ bool wxLocale::Init(const wxChar *szName,
 
   // the short name will be used to look for catalog files as well,
   // so we need something here
-  if ( m_strShort.IsEmpty() ) {
+  if ( m_strShort.empty() ) {
     // FIXME I don't know how these 2 letter abbreviations are formed,
     //       this wild guess is surely wrong
-    if ( szLocale[0] )
+    if ( szLocale && szLocale[0] )
     {
         m_strShort += (wxChar)wxTolower(szLocale[0]);
         if ( szLocale[1] )
@@ -669,12 +1473,9 @@ bool wxLocale::Init(const wxChar *szName,
     }
   }
 
-  // save the old locale to be able to restore it later
-  m_pOldLocale = wxSetLocale(this);
-
-  // load the default catalog with wxWindows standard messages
+  // load the default catalog with wxWidgets standard messages
   m_pMsgCat = NULL;
-  bool bOk = TRUE;
+  bool bOk = true;
   if ( bLoadDefault )
     bOk = AddCatalog(wxT("wxstd"));
 
@@ -682,30 +1483,30 @@ bool wxLocale::Init(const wxChar *szName,
 }
 
 
-#if defined(__UNIX__) && wxUSE_UNICODE
+#if defined(__UNIX__) && wxUSE_UNICODE && !defined(__WXMAC__)
 static wxWCharBuffer wxSetlocaleTryUTF(int c, const wxChar *lc)
 {
     wxMB2WXbuf l = wxSetlocale(c, lc);
     if ( !l && lc && lc[0] != 0 )
     {
-    	wxString buf(lc);
+        wxString buf(lc);
         wxString buf2;
-    	buf2 = buf + wxT(".UTF-8");
-    	l = wxSetlocale(c, buf2.c_str());
+        buf2 = buf + wxT(".UTF-8");
+        l = wxSetlocale(c, buf2.c_str());
         if ( !l )
         {
             buf2 = buf + wxT(".utf-8");
-    	    l = wxSetlocale(c, buf2.c_str());
+            l = wxSetlocale(c, buf2.c_str());
         }
         if ( !l )
         {
             buf2 = buf + wxT(".UTF8");
-    	    l = wxSetlocale(c, buf2.c_str());
+            l = wxSetlocale(c, buf2.c_str());
         }
         if ( !l )
         {
             buf2 = buf + wxT(".utf8");
-    	    l = wxSetlocale(c, buf2.c_str());
+            l = wxSetlocale(c, buf2.c_str());
         }
     }
     return l;
@@ -726,7 +1527,7 @@ bool wxLocale::Init(int language, int flags)
     // We failed to detect system language, so we will use English:
     if (lang == wxLANGUAGE_UNKNOWN)
     {
-       return FALSE;
+       return false;
     }
 
     const wxLanguageInfo *info = GetLanguageInfo(lang);
@@ -735,7 +1536,7 @@ bool wxLocale::Init(int language, int flags)
     if (info == NULL)
     {
         wxLogError(wxT("Unknown language %i."), lang);
-        return FALSE;
+        return false;
     }
 
     wxString name = info->Description;
@@ -783,7 +1584,7 @@ bool wxLocale::Init(int language, int flags)
     if ( !retloc )
     {
         wxLogError(wxT("Cannot set locale to '%s'."), locale.c_str());
-        return FALSE;
+        return false;
     }
 #elif defined(__WIN32__)
 
@@ -796,7 +1597,10 @@ bool wxLocale::Init(int language, int flags)
         //     #ifdef SETLOCALE_FAILS_ON_UNICODE_LANGS bellow.
         #define SETLOCALE_FAILS_ON_UNICODE_LANGS
     #endif
-    
+
+#if !wxUSE_UNICODE
+    const
+#endif
     wxMB2WXbuf retloc = wxT("C");
     if (language != wxLANGUAGE_DEFAULT)
     {
@@ -807,7 +1611,11 @@ bool wxLocale::Init(int language, int flags)
         }
         else
         {
-            int codepage = -1;
+            int codepage
+                         #ifdef SETLOCALE_FAILS_ON_UNICODE_LANGS
+                         = -1
+                         #endif
+                         ;
             wxUint32 lcid = MAKELCID(MAKELANGID(info->WinLang, info->WinSublang),
                                      SORT_DEFAULT);
             // FIXME
@@ -829,11 +1637,11 @@ bool wxLocale::Init(int language, int flags)
                 if (codepage != 0)
                     locale << wxT(".") << buffer;
             }
-            if (locale.IsEmpty())
+            if (locale.empty())
             {
                 wxLogLastError(wxT("SetThreadLocale"));
                 wxLogError(wxT("Cannot set locale to language %s."), name.c_str());
-                return FALSE;
+                return false;
             }
             else
             {
@@ -875,12 +1683,30 @@ bool wxLocale::Init(int language, int flags)
     if ( !retloc )
     {
         wxLogError(wxT("Cannot set locale to language %s."), name.c_str());
-        return FALSE;
+        return false;
+    }
+#elif defined(__WXMAC__)
+    if (lang == wxLANGUAGE_DEFAULT)
+        locale = wxEmptyString;
+    else
+        locale = info->CanonicalName;
+
+    wxMB2WXbuf retloc = wxSetlocale(LC_ALL, locale);
+
+    if ( !retloc )
+    {
+        // Some C libraries don't like xx_YY form and require xx only
+        retloc = wxSetlocale(LC_ALL, locale.Mid(0,2));
+    }
+    if ( !retloc )
+    {
+        wxLogError(wxT("Cannot set locale to '%s'."), locale.c_str());
+        return false;
     }
-#elif defined(__WXMAC__) || defined(__WXPM__)
+#elif defined(__WXPM__)
     wxMB2WXbuf retloc = wxSetlocale(LC_ALL , wxEmptyString);
 #else
-    return FALSE;
+    return false;
     #define WX_NO_LOCALE_SUPPORT
 #endif
 
@@ -891,7 +1717,7 @@ bool wxLocale::Init(int language, int flags)
                     (flags & wxLOCALE_CONV_ENCODING) != 0);
     free(szLocale);
 
-    if ( ret )
+    if (IsOk()) // setlocale() succeeded
         m_language = lang;
 
     return ret;
@@ -1366,7 +2192,7 @@ void wxLocale::AddCatalogLookupPathPrefix(const wxString& prefix)
 
 // this is a bit strange as under Windows we get the encoding name using its
 // numeric value and under Unix we do it the other way round, but this just
-// reflects the way different systems provide he encoding info
+// reflects the way different systems provide the encoding info
 
 /* static */
 wxString wxLocale::GetSystemEncodingName()
@@ -1377,6 +2203,9 @@ wxString wxLocale::GetSystemEncodingName()
     // FIXME: what is the error return value for GetACP()?
     UINT codepage = ::GetACP();
     encname.Printf(_T("windows-%u"), codepage);
+#elif defined(__WXMAC__)
+    // default is just empty string, this resolves to the default system
+    // encoding later
 #elif defined(__UNIX_LIKE__)
 
 #if defined(HAVE_LANGINFO_H) && defined(CODESET)
@@ -1384,7 +2213,7 @@ wxString wxLocale::GetSystemEncodingName()
     // to Unix98)
     char *oldLocale = strdup(setlocale(LC_CTYPE, NULL));
     setlocale(LC_CTYPE, "");
-    char *alang = nl_langinfo(CODESET);
+    const char *alang = nl_langinfo(CODESET);
     setlocale(LC_CTYPE, oldLocale);
     free(oldLocale);
 
@@ -1398,8 +2227,18 @@ wxString wxLocale::GetSystemEncodingName()
         // ISO-646, i.e. 7 bit ASCII
         //
         // and recent glibc call it ANSI_X3.4-1968...
-        if ( strcmp(alang, "646") == 0 ||
-               strcmp(alang, "ANSI_X3.4-1968") == 0 )
+        //
+        // HP-UX uses HP-Roman8 cset which is not the same as ASCII (see RFC
+        // 1345 for its definition) but must be recognized as otherwise HP
+        // users get a warning about it on each program startup, so handle it
+        // here -- but it would be obviously better to add real supprot to it,
+        // of course!
+        if ( strcmp(alang, "646") == 0
+                || strcmp(alang, "ANSI_X3.4-1968") == 0
+#ifdef __HPUX__
+                    || strcmp(alang, "roman8") == 0
+#endif // __HPUX__
+            )
         {
             encname = _T("US-ASCII");
         }
@@ -1445,7 +2284,7 @@ wxFontEncoding wxLocale::GetSystemEncoding()
 #if defined(__WIN32__) && !defined(__WXMICROWIN__)
     UINT codepage = ::GetACP();
 
-    // wxWindows only knows about CP1250-1257, 932, 936, 949, 950
+    // wxWidgets only knows about CP1250-1257, 932, 936, 949, 950
     if ( codepage >= 1250 && codepage <= 1257 )
     {
         return (wxFontEncoding)(wxFONTENCODING_CP1250 + codepage - 1250);
@@ -1470,12 +2309,20 @@ wxFontEncoding wxLocale::GetSystemEncoding()
     {
         return wxFONTENCODING_CP950;
     }
+#elif defined(__WXMAC__)
+    TextEncoding encoding = 0 ;
+#if TARGET_CARBON
+    encoding = CFStringGetSystemEncoding() ;
+#else
+    UpgradeScriptInfoToTextEncoding ( smSystemScript , kTextLanguageDontCare , kTextRegionDontCare , NULL , &encoding ) ;
+#endif
+    return wxMacGetFontEncFromSystemEnc( encoding ) ;
 #elif defined(__UNIX_LIKE__) && wxUSE_FONTMAP
     wxString encname = GetSystemEncodingName();
     if ( !encname.empty() )
     {
         wxFontEncoding enc = wxFontMapper::Get()->
-            CharsetToEncoding(encname, FALSE /* not interactive */);
+            CharsetToEncoding(encname, false /* not interactive */);
 
         // on some modern Linux systems (RedHat 8) the default system locale
         // is UTF8 -- but it isn't supported by wxGTK in ANSI build at all so
@@ -1517,6 +2364,11 @@ const wxLanguageInfo *wxLocale::GetLanguageInfo(int lang)
 {
     CreateLanguagesDB();
 
+    // calling GetLanguageInfo(wxLANGUAGE_DEFAULT) is a natural thing to do, so
+    // make it work
+    if ( lang == wxLANGUAGE_DEFAULT )
+        lang = GetSystemLanguage();
+
     const size_t count = ms_languagesDB->GetCount();
     for ( size_t i = 0; i < count; i++ )
     {
@@ -1596,8 +2448,9 @@ wxLocale::~wxLocale()
         delete pTmpCat;
     }
 
-    // restore old locale
+    // restore old locale pointer
     wxSetLocale(m_pOldLocale);
+
     // FIXME
 #ifndef __WXWINCE__
     wxSetlocale(LC_ALL, m_pszOldLocale);
@@ -1608,9 +2461,17 @@ wxLocale::~wxLocale()
 // get the translation of given string in current locale
 const wxChar *wxLocale::GetString(const wxChar *szOrigString,
                                   const wxChar *szDomain) const
+{
+    return GetString(szOrigString, szOrigString, size_t(-1), szDomain);
+}
+
+const wxChar *wxLocale::GetString(const wxChar *szOrigString,
+                                  const wxChar *szOrigString2,
+                                  size_t n,
+                                  const wxChar *szDomain) const
 {
     if ( wxIsEmpty(szOrigString) )
-        return _T("");
+        return wxEmptyString;
 
     const wxChar *pszTrans = NULL;
     wxMsgCatalog *pMsgCat;
@@ -1621,14 +2482,14 @@ const wxChar *wxLocale::GetString(const wxChar *szOrigString,
 
         // does the catalog exist?
         if ( pMsgCat != NULL )
-            pszTrans = pMsgCat->GetString(szOrigString);
+            pszTrans = pMsgCat->GetString(szOrigString, n);
     }
     else
     {
         // search in all domains
         for ( pMsgCat = m_pMsgCat; pMsgCat != NULL; pMsgCat = pMsgCat->m_pNext )
         {
-            pszTrans = pMsgCat->GetString(szOrigString);
+            pszTrans = pMsgCat->GetString(szOrigString, n);
             if ( pszTrans != NULL )   // take the first found
                 break;
         }
@@ -1644,24 +2505,81 @@ const wxChar *wxLocale::GetString(const wxChar *szOrigString,
             if ( szDomain != NULL )
             {
                 wxLogTrace(_T("i18n"),
-                           _T("string '%s' not found in domain '%s' for locale '%s'."),
-                           szOrigString, szDomain, m_strLocale.c_str());
+                           _T("string '%s'[%lu] not found in domain '%s' for locale '%s'."),
+                           szOrigString, (unsigned long)n,
+                           szDomain, m_strLocale.c_str());
+
             }
             else
             {
                 wxLogTrace(_T("i18n"),
-                           _T("string '%s' not found in locale '%s'."),
-                           szOrigString, m_strLocale.c_str());
+                           _T("string '%s'[%lu] not found in locale '%s'."),
+                           szOrigString, (unsigned long)n, m_strLocale.c_str());
             }
         }
 #endif // __WXDEBUG__
 
-        return szOrigString;
+        if (n == size_t(-1))
+            return szOrigString;
+        else
+            return n == 1 ? szOrigString : szOrigString2;
     }
 
     return pszTrans;
 }
 
+wxString wxLocale::GetHeaderValue( const wxChar* szHeader,
+                                   const wxChar* szDomain ) const
+{
+    if ( wxIsEmpty(szHeader) )
+        return wxEmptyString;
+
+    wxChar const * pszTrans = NULL;
+    wxMsgCatalog *pMsgCat;
+
+    if ( szDomain != NULL )
+    {
+        pMsgCat = FindCatalog(szDomain);
+
+        // does the catalog exist?
+        if ( pMsgCat == NULL )
+            return wxEmptyString;
+
+        pszTrans = pMsgCat->GetString(wxEmptyString, (size_t)-1);
+    }
+    else
+    {
+        // search in all domains
+        for ( pMsgCat = m_pMsgCat; pMsgCat != NULL; pMsgCat = pMsgCat->m_pNext )
+        {
+            pszTrans = pMsgCat->GetString(wxEmptyString, (size_t)-1);
+            if ( pszTrans != NULL )   // take the first found
+                break;
+        }
+    }
+
+    if ( wxIsEmpty(pszTrans) )
+      return wxEmptyString;
+
+    wxChar const * pszFound = wxStrstr(pszTrans, szHeader);
+    if ( pszFound == NULL )
+      return wxEmptyString;
+
+    pszFound += wxStrlen(szHeader) + 2 /* ': ' */;
+
+    // Every header is separated by \n
+
+    wxChar const * pszEndLine = wxStrchr(pszFound, wxT('\n'));
+    if ( pszEndLine == NULL ) pszEndLine = pszFound + wxStrlen(pszFound);
+
+
+    // wxString( wxChar*, length);
+    wxString retVal( pszFound, pszEndLine - pszFound );
+
+    return retVal;
+}
+
+
 // find catalog by name in a linked list, return NULL if !found
 wxMsgCatalog *wxLocale::FindCatalog(const wxChar *szDomain) const
 {
@@ -1684,22 +2602,47 @@ bool wxLocale::IsLoaded(const wxChar *szDomain) const
 
 // add a catalog to our linked list
 bool wxLocale::AddCatalog(const wxChar *szDomain)
+{
+    return AddCatalog(szDomain, wxLANGUAGE_ENGLISH, NULL);
+}
+
+// add a catalog to our linked list
+bool wxLocale::AddCatalog(const wxChar *szDomain,
+                          wxLanguage    msgIdLanguage,
+                          const wxChar *msgIdCharset)
+
 {
   wxMsgCatalog *pMsgCat = new wxMsgCatalog;
 
-  if ( pMsgCat->Load(m_strShort, szDomain, m_bConvertEncoding) ) {
+  if ( pMsgCat->Load(m_strShort, szDomain, msgIdCharset, m_bConvertEncoding) ) {
     // add it to the head of the list so that in GetString it will
     // be searched before the catalogs added earlier
     pMsgCat->m_pNext = m_pMsgCat;
     m_pMsgCat = pMsgCat;
 
-    return TRUE;
+    return true;
   }
   else {
     // don't add it because it couldn't be loaded anyway
     delete pMsgCat;
 
-    return FALSE;
+    // It is OK to not load catalog if the msgid language and m_language match,
+    // in which case we can directly display the texts embedded in program's
+    // source code:
+    if (m_language == msgIdLanguage)
+        return true;
+
+    // If there's no exact match, we may still get partial match where the
+    // (basic) language is same, but the country differs. For example, it's
+    // permitted to use en_US strings from sources even if m_language is en_GB:
+    const wxLanguageInfo *msgIdLangInfo = GetLanguageInfo(msgIdLanguage);
+    if ( msgIdLangInfo &&
+         msgIdLangInfo->CanonicalName.Mid(0, 2) == m_strShort.Mid(0, 2) )
+    {
+        return true;
+    }
+
+    return false;
   }
 }
 
@@ -1707,12 +2650,10 @@ bool wxLocale::AddCatalog(const wxChar *szDomain)
 // accessors for locale-dependent data
 // ----------------------------------------------------------------------------
 
-#if 0
-
 #ifdef __WXMSW__
 
 /* static */
-wxString wxLocale::GetInfo(wxLocaleInfo index)
+wxString wxLocale::GetInfo(wxLocaleInfo index, wxLocaleCategory WXUNUSED(cat))
 {
     wxString str;
     wxChar buffer[256];
@@ -1720,29 +2661,31 @@ wxString wxLocale::GetInfo(wxLocaleInfo index)
     buffer[0] = wxT('\0');
     switch (index)
     {
-        case wxSYS_DECIMAL_SEPARATOR:
+        case wxLOCALE_DECIMAL_POINT:
             count = ::GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_SDECIMAL, buffer, 256);
             if (!count)
-                str << ".";
+                str << wxT(".");
             else
                 str << buffer;
             break;
+#if 0
         case wxSYS_LIST_SEPARATOR:
             count = ::GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_SLIST, buffer, 256);
             if (!count)
-                str << ",";
+                str << wxT(",");
             else
                 str << buffer;
             break;
         case wxSYS_LEADING_ZERO: // 0 means no leading zero, 1 means leading zero
             count = ::GetLocaleInfo(LOCALE_USER_DEFAULT, LOCALE_ILZERO, buffer, 256);
             if (!count)
-                str << "0";
+                str << wxT("0");
             else
                 str << buffer;
             break;
+#endif
         default:
-            wxFAIL_MSG("Unknown System String !");
+            wxFAIL_MSG(wxT("Unknown System String !"));
     }
     return str;
 }
@@ -1750,15 +2693,42 @@ wxString wxLocale::GetInfo(wxLocaleInfo index)
 #else // !__WXMSW__
 
 /* static */
-wxString wxLocale::GetInfo(wxLocaleInfo index, wxLocaleCategory)
+wxString wxLocale::GetInfo(wxLocaleInfo index, wxLocaleCategory cat)
 {
-    return wxEmptyString;
+    struct lconv *locale_info = localeconv();
+    switch (cat)
+    {
+        case wxLOCALE_CAT_NUMBER:
+            switch (index)
+            {
+                case wxLOCALE_THOUSANDS_SEP:
+                    return wxString(locale_info->thousands_sep,
+                                    *wxConvCurrent);
+                case wxLOCALE_DECIMAL_POINT:
+                    return wxString(locale_info->decimal_point,
+                                    *wxConvCurrent);
+                default:
+                    return wxEmptyString;
+            }
+        case wxLOCALE_CAT_MONEY:
+            switch (index)
+            {
+                case wxLOCALE_THOUSANDS_SEP:
+                    return wxString(locale_info->mon_thousands_sep,
+                                    *wxConvCurrent);
+                case wxLOCALE_DECIMAL_POINT:
+                    return wxString(locale_info->mon_decimal_point,
+                                    *wxConvCurrent);
+                default:
+                    return wxEmptyString;
+            }
+        default:
+            return wxEmptyString;
+    }
 }
 
 #endif // __WXMSW__/!__WXMSW__
 
-#endif // 0
-
 // ----------------------------------------------------------------------------
 // global functions and variables
 // ----------------------------------------------------------------------------
@@ -1792,7 +2762,7 @@ class wxLocaleModule: public wxModule
     DECLARE_DYNAMIC_CLASS(wxLocaleModule)
     public:
         wxLocaleModule() {}
-        bool OnInit() { return TRUE; }
+        bool OnInit() { return true; }
         void OnExit() { wxLocale::DestroyLanguagesDB(); }
 };
 
@@ -2354,7 +3324,7 @@ void wxLocale::InitLanguagesDB()
    LNG(wxLANGUAGE_BURMESE,                    "my"   , 0              , 0                                 , "Burmese")
    LNG(wxLANGUAGE_CAMBODIAN,                  "km"   , 0              , 0                                 , "Cambodian")
    LNG(wxLANGUAGE_CATALAN,                    "ca_ES", LANG_CATALAN   , SUBLANG_DEFAULT                   , "Catalan")
-   LNG(wxLANGUAGE_CHINESE,                    "zh_CN", LANG_CHINESE   , SUBLANG_DEFAULT                   , "Chinese")
+   LNG(wxLANGUAGE_CHINESE,                    "zh_TW", LANG_CHINESE   , SUBLANG_DEFAULT                   , "Chinese")
    LNG(wxLANGUAGE_CHINESE_SIMPLIFIED,         "zh_CN", LANG_CHINESE   , SUBLANG_CHINESE_SIMPLIFIED        , "Chinese (Simplified)")
    LNG(wxLANGUAGE_CHINESE_TRADITIONAL,        "zh_TW", LANG_CHINESE   , SUBLANG_CHINESE_TRADITIONAL       , "Chinese (Traditional)")
    LNG(wxLANGUAGE_CHINESE_HONGKONG,           "zh_HK", LANG_CHINESE   , SUBLANG_CHINESE_HONGKONG          , "Chinese (Hongkong)")
@@ -2511,7 +3481,7 @@ void wxLocale::InitLanguagesDB()
    LNG(wxLANGUAGE_SWAHILI,                    "sw_KE", LANG_SWAHILI   , SUBLANG_DEFAULT                   , "Swahili")
    LNG(wxLANGUAGE_SWEDISH,                    "sv_SE", LANG_SWEDISH   , SUBLANG_SWEDISH                   , "Swedish")
    LNG(wxLANGUAGE_SWEDISH_FINLAND,            "sv_FI", LANG_SWEDISH   , SUBLANG_SWEDISH_FINLAND           , "Swedish (Finland)")
-   LNG(wxLANGUAGE_TAGALOG,                    "tl"   , 0              , 0                                 , "Tagalog")
+   LNG(wxLANGUAGE_TAGALOG,                    "tl_PH", 0              , 0                                 , "Tagalog")
    LNG(wxLANGUAGE_TAJIK,                      "tg"   , 0              , 0                                 , "Tajik")
    LNG(wxLANGUAGE_TAMIL,                      "ta"   , LANG_TAMIL     , SUBLANG_DEFAULT                   , "Tamil")
    LNG(wxLANGUAGE_TATAR,                      "tt"   , LANG_TATAR     , SUBLANG_DEFAULT                   , "Tatar")