include/wx/xlocale.h

   1 //////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/xlocale.h
   3 // Purpose:     Header to provide some xlocale wrappers
   4 // Author:      Brian Vanderburg II, Vadim Zeitlin
   5 // Created:     2008-01-07
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2008 Brian Vanderburg II
   8 //                  2008 Vadim Zeitlin <vadim@wxwidgets.org>
   9 // Licence:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 /*
  13     This header defines portable wrappers around xlocale foo_l() functions or
  14     their MSVC proprietary _foo_l() equivalents when they are available and
  15     implements these functions for the "C" locale [only] if they are not. This
  16     allows the program running under the default user locale to still use "C"
  17     locale for operations such as reading data from files where they are stored
  18     using decimal point &c.
  19
  20     TODO: Currently only the character classification and transformation
  21           functions are implemented, we also need at least
  22             - numbers: atof_l(), strtod_l() &c
  23             - formatted IO: scanf_l(), printf_l() &c
  24             - time: strftime_l(), strptime_l()
  25  */
  26
  27 #ifndef _WX_XLOCALE_H_
  28 #define _WX_XLOCALE_H_
  29
  30 #include "wx/defs.h"    // wxUSE_XLOCALE
  31
  32 #if wxUSE_XLOCALE
  33
  34 #include "wx/crt.h"     // Includes wx/chartype.h, wx/wxcrt.h(wx/string.h)
  35 #include "wx/intl.h"    // wxLanguage
  36
  37 // The platform-specific locale type
  38 // If wxXLocale_t is not defined, then only "C" locale support is provided
  39 #ifdef wxHAS_XLOCALE_SUPPORT
  40     #if wxCHECK_VISUALC_VERSION(8)
  41         typedef _locale_t wxXLocale_t;
  42         #define wxXLOCALE_IDENT(name) _ ## name
  43     #elif defined(HAVE_LOCALE_T)
  44         #include <locale.h>
  45         #include <xlocale.h>
  46         #include <ctype.h>
  47
  48         #if wxUSE_UNICODE
  49             #include <wctype.h>
  50         #endif
  51
  52         // Locale type and identifier name
  53         typedef locale_t wxXLocale_t;
  54
  55         #define wxXLOCALE_IDENT(name) name
  56     #else
  57         #error "Unknown xlocale support"
  58     #endif
  59 #endif // wxHAS_XLOCALE_SUPPORT
  60
  61
  62 // wxXLocale is a wrapper around the native type representing a locale.
  63 //
  64 // It is not to be confused with wxLocale, which handles actually changing the
  65 // locale, loading message catalogs, etc.  This just stores a locale value.
  66 // The similarity of names is unfortunate, but there doesn't seem to be any
  67 // better alternative right now. Perhaps by wxWidgets 4.0 better naming could
  68 // be used, or this class could become wxLocale (a wrapper for the value), and
  69 // some other class could be used to load the language catalogs or something
  70 // that would be clearer
  71 #ifdef wxHAS_XLOCALE_SUPPORT
  72
  73 class WXDLLIMPEXP_BASE wxXLocale
  74 {
  75 public:
  76     // Construct an uninitialized locale
  77     wxXLocale() { m_locale = NULL; }
  78
  79     // Construct from a symbolic language constant
  80     wxXLocale(wxLanguage lang);
  81
  82     // Construct from the given language string
  83     wxXLocale(const char *loc) { Init(loc); }
  84
  85     // Destroy the locale
  86     ~wxXLocale() { Free(); }
  87
  88
  89     // Get the global "C" locale object
  90     static wxXLocale& GetCLocale();
  91
  92     // Check if the object represents a valid locale (notice that without
  93     // wxHAS_XLOCALE_SUPPORT the only valid locale is the "C" one)
  94     bool IsOk() const { return m_locale != NULL; }
  95
  96     // Get the type
  97     wxXLocale_t Get() const { return m_locale; }
  98
  99 private:
 100     // Special ctor for the "C" locale, it's only used internally as the user
 101     // code is supposed to use GetCLocale()
 102     wxXLocale(struct wxXLocaleCTag * WXUNUSED(dummy)) { Init("C"); }
 103
 104     // Create from the given language string (called from ctors)
 105     void Init(const char *loc);
 106
 107     // Free the locale if it's non-NULL
 108     void Free();
 109
 110
 111     // The corresponding locale handle, NULL if invalid
 112     wxXLocale_t m_locale;
 113
 114
 115     // POSIX xlocale API provides a duplocale() function but MSVC locale API
 116     // doesn't give us any means to copy a _locale_t object so we reduce the
 117     // functionality to least common denominator here -- it shouldn't be a
 118     // problem as copying the locale objects shouldn't be often needed
 119     DECLARE_NO_COPY_CLASS(wxXLocale)
 120 };
 121
 122 #else // !wxHAS_XLOCALE_SUPPORT
 123
 124 // Skeleton version supporting only the "C" locale for the systems without
 125 // xlocale support
 126 class WXDLLIMPEXP_BASE wxXLocale
 127 {
 128 public:
 129     // Construct an uninitialized locale
 130     wxXLocale() { m_isC = false; }
 131
 132     // Construct from a symbolic language constant: unless the language is
 133     // wxLANGUAGE_ENGLISH_US (which we suppose to be the same as "C" locale)
 134     // the object will be invalid
 135     wxXLocale(wxLanguage lang)
 136     {
 137         m_isC = lang == wxLANGUAGE_ENGLISH_US;
 138     }
 139
 140     // Construct from the given language string: unless the string is "C" or
 141     // "POSIX" the object will be invalid
 142     wxXLocale(const char *loc)
 143     {
 144         m_isC = loc && (strcmp(loc, "C") == 0 || strcmp(loc, "POSIX") == 0);
 145     }
 146
 147     // Default copy ctor, assignment operator and dtor are ok (or would be if
 148     // we didn't use DECLARE_NO_COPY_CLASS() for consistency with the xlocale
 149     // version)
 150
 151
 152     // Get the global "C" locale object
 153     static wxXLocale& GetCLocale();
 154
 155     // Check if the object represents a valid locale (notice that without
 156     // wxHAS_XLOCALE_SUPPORT the only valid locale is the "C" one)
 157     bool IsOk() const { return m_isC; }
 158
 159 private:
 160     // Special ctor for the "C" locale, it's only used internally as the user
 161     // code is supposed to use GetCLocale()
 162     wxXLocale(struct wxXLocaleCTag * WXUNUSED(dummy)) { m_isC = true; }
 163
 164     // Without xlocale support this class can only represent "C" locale, if
 165     // this is false the object is invalid
 166     bool m_isC;
 167
 168
 169     // although it's not a problem to copy the objects of this class, we use
 170     // this macro in this implementation for consistency with the xlocale-based
 171     // one which can't be copied when using MSVC locale API
 172     DECLARE_NO_COPY_CLASS(wxXLocale)
 173 };
 174
 175 #endif // wxHAS_XLOCALE_SUPPORT/!wxHAS_XLOCALE_SUPPORT
 176
 177
 178 // A shorter synonym for the most commonly used locale object
 179 #define wxCLocale (wxXLocale::GetCLocale())
 180
 181
 182 // Wrappers for various functions:
 183 #ifdef wxHAS_XLOCALE_SUPPORT
 184
 185     // ctype functions
 186     #define wxCRT_Isalnum_lA wxXLOCALE_IDENT(isalnum_l)
 187     #define wxCRT_Isalpha_lA wxXLOCALE_IDENT(isalpha_l)
 188     #define wxCRT_Iscntrl_lA wxXLOCALE_IDENT(iscntrl_l)
 189     #define wxCRT_Isdigit_lA wxXLOCALE_IDENT(isdigit_l)
 190     #define wxCRT_Isgraph_lA wxXLOCALE_IDENT(isgraph_l)
 191     #define wxCRT_Islower_lA wxXLOCALE_IDENT(islower_l)
 192     #define wxCRT_Isprint_lA wxXLOCALE_IDENT(isprint_l)
 193     #define wxCRT_Ispunct_lA wxXLOCALE_IDENT(ispunct_l)
 194     #define wxCRT_Isspace_lA wxXLOCALE_IDENT(isspace_l)
 195     #define wxCRT_Isupper_lA wxXLOCALE_IDENT(isupper_l)
 196     #define wxCRT_Isxdigit_lA wxXLOCALE_IDENT(isxdigit_l)
 197     #define wxCRT_Tolower_lA wxXLOCALE_IDENT(tolower_l)
 198     #define wxCRT_Toupper_lA wxXLOCALE_IDENT(toupper_l)
 199
 200     inline int wxIsalnum_l(char c, const wxXLocale& loc)
 201         { return wxCRT_Isalnum_lA(c, loc.Get()); }
 202     inline int wxIsalpha_l(char c, const wxXLocale& loc)
 203         { return wxCRT_Isalpha_lA(c, loc.Get()); }
 204     inline int wxIscntrl_l(char c, const wxXLocale& loc)
 205         { return wxCRT_Iscntrl_lA(c, loc.Get()); }
 206     inline int wxIsdigit_l(char c, const wxXLocale& loc)
 207         { return wxCRT_Isdigit_lA(c, loc.Get()); }
 208     inline int wxIsgraph_l(char c, const wxXLocale& loc)
 209         { return wxCRT_Isgraph_lA(c, loc.Get()); }
 210     inline int wxIslower_l(char c, const wxXLocale& loc)
 211         { return wxCRT_Islower_lA(c, loc.Get()); }
 212     inline int wxIsprint_l(char c, const wxXLocale& loc)
 213         { return wxCRT_Isprint_lA(c, loc.Get()); }
 214     inline int wxIspunct_l(char c, const wxXLocale& loc)
 215         { return wxCRT_Ispunct_lA(c, loc.Get()); }
 216     inline int wxIsspace_l(char c, const wxXLocale& loc)
 217         { return wxCRT_Isspace_lA(c, loc.Get()); }
 218     inline int wxIsupper_l(char c, const wxXLocale& loc)
 219         { return wxCRT_Isupper_lA(c, loc.Get()); }
 220     inline int wxIsxdigit_l(char c, const wxXLocale& loc)
 221         { return wxCRT_Isxdigit_lA(c, loc.Get()); }
 222     inline char wxTolower_l(char c, const wxXLocale& loc)
 223         { return wxCRT_Tolower_lA(c, loc.Get()); }
 224     inline char wxToupper_l(char c, const wxXLocale& loc)
 225         { return wxCRT_Toupper_lA(c, loc.Get()); }
 226
 227     #if wxUSE_UNICODE
 228         #define wxCRT_Isalnum_lW wxXLOCALE_IDENT(iswalnum_l)
 229         #define wxCRT_Isalpha_lW wxXLOCALE_IDENT(iswalpha_l)
 230         #define wxCRT_Iscntrl_lW wxXLOCALE_IDENT(iswcntrl_l)
 231         #define wxCRT_Isdigit_lW wxXLOCALE_IDENT(iswdigit_l)
 232         #define wxCRT_Isgraph_lW wxXLOCALE_IDENT(iswgraph_l)
 233         #define wxCRT_Islower_lW wxXLOCALE_IDENT(iswlower_l)
 234         #define wxCRT_Isprint_lW wxXLOCALE_IDENT(iswprint_l)
 235         #define wxCRT_Ispunct_lW wxXLOCALE_IDENT(iswpunct_l)
 236         #define wxCRT_Isspace_lW wxXLOCALE_IDENT(iswspace_l)
 237         #define wxCRT_Isupper_lW wxXLOCALE_IDENT(iswupper_l)
 238         #define wxCRT_Isxdigit_lW wxXLOCALE_IDENT(iswxdigit_l)
 239         #define wxCRT_Tolower_lW wxXLOCALE_IDENT(towlower_l)
 240         #define wxCRT_Toupper_lW wxXLOCALE_IDENT(towupper_l)
 241
 242         inline int wxIsalnum_l(wchar_t c, const wxXLocale& loc)
 243             { return wxCRT_Isalnum_lW(c, loc.Get()); }
 244         inline int wxIsalpha_l(wchar_t c, const wxXLocale& loc)
 245             { return wxCRT_Isalpha_lW(c, loc.Get()); }
 246         inline int wxIscntrl_l(wchar_t c, const wxXLocale& loc)
 247             { return wxCRT_Iscntrl_lW(c, loc.Get()); }
 248         inline int wxIsdigit_l(wchar_t c, const wxXLocale& loc)
 249             { return wxCRT_Isdigit_lW(c, loc.Get()); }
 250         inline int wxIsgraph_l(wchar_t c, const wxXLocale& loc)
 251             { return wxCRT_Isgraph_lW(c, loc.Get()); }
 252         inline int wxIslower_l(wchar_t c, const wxXLocale& loc)
 253             { return wxCRT_Islower_lW(c, loc.Get()); }
 254         inline int wxIsprint_l(wchar_t c, const wxXLocale& loc)
 255             { return wxCRT_Isprint_lW(c, loc.Get()); }
 256         inline int wxIspunct_l(wchar_t c, const wxXLocale& loc)
 257             { return wxCRT_Ispunct_lW(c, loc.Get()); }
 258         inline int wxIsspace_l(wchar_t c, const wxXLocale& loc)
 259             { return wxCRT_Isspace_lW(c, loc.Get()); }
 260         inline int wxIsupper_l(wchar_t c, const wxXLocale& loc)
 261             { return wxCRT_Isupper_lW(c, loc.Get()); }
 262         inline int wxIsxdigit_l(wchar_t c, const wxXLocale& loc)
 263             { return wxCRT_Isxdigit_lW(c, loc.Get()); }
 264         inline wchar_t wxTolower_l(wchar_t c, const wxXLocale& loc)
 265             { return wxCRT_Tolower_lW(c, loc.Get()); }
 266         inline wchar_t wxToupper_l(wchar_t c, const wxXLocale& loc)
 267             { return wxCRT_Toupper_lW(c, loc.Get()); }
 268
 269     #endif // wxUSE_UNICDE (ctype functions)
 270 #else // !wxHAS_XLOCALE_SUPPORT
 271
 272     // ctype functions
 273     int WXDLLIMPEXP_BASE wxIsalnum_l(const wxUniChar& c, const wxXLocale& loc);
 274     int WXDLLIMPEXP_BASE wxIsalpha_l(const wxUniChar& c, const wxXLocale& loc);
 275     int WXDLLIMPEXP_BASE wxIscntrl_l(const wxUniChar& c, const wxXLocale& loc);
 276     int WXDLLIMPEXP_BASE wxIsdigit_l(const wxUniChar& c, const wxXLocale& loc);
 277     int WXDLLIMPEXP_BASE wxIsgraph_l(const wxUniChar& c, const wxXLocale& loc);
 278     int WXDLLIMPEXP_BASE wxIslower_l(const wxUniChar& c, const wxXLocale& loc);
 279     int WXDLLIMPEXP_BASE wxIsprint_l(const wxUniChar& c, const wxXLocale& loc);
 280     int WXDLLIMPEXP_BASE wxIspunct_l(const wxUniChar& c, const wxXLocale& loc);
 281     int WXDLLIMPEXP_BASE wxIsspace_l(const wxUniChar& c, const wxXLocale& loc);
 282     int WXDLLIMPEXP_BASE wxIsupper_l(const wxUniChar& c, const wxXLocale& loc);
 283     int WXDLLIMPEXP_BASE wxIsxdigit_l(const wxUniChar& c, const wxXLocale& loc);
 284     wxUniChar WXDLLIMPEXP_BASE wxTolower_l(const wxUniChar& c, const wxXLocale& loc);
 285     wxUniChar WXDLLIMPEXP_BASE wxToupper_l(const wxUniChar& c, const wxXLocale& loc);
 286
 287
 288 #endif // wxHAS_XLOCALE_SUPPORT/!wxHAS_XLOCALE_SUPPORT
 289
 290 #endif // wxUSE_XLOCALE
 291
 292 #endif // _WX_XLOCALE_H_