LXR busybox/include/unicode.h

   1/* vi: set sw=4 ts=4: */
   2/*
   3 * Licensed under GPLv2, see file LICENSE in this source tree.
   4 */
   5#ifndef UNICODE_H
   6#define UNICODE_H 1
   7
   8#if ENABLE_UNICODE_USING_LOCALE
   9# include <wchar.h>
  10# include <wctype.h>
  11#endif
  12
  13PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
  14
  15enum {
  16        UNICODE_UNKNOWN = 0,
  17        UNICODE_OFF = 1,
  18        UNICODE_ON = 2,
  19};
  20
  21#define unicode_bidi_isrtl(wc) 0
  22#define unicode_bidi_is_neutral_wchar(wc) (wc <= 126 && !isalpha(wc))
  23
  24#if !ENABLE_UNICODE_SUPPORT
  25
  26# define unicode_strlen(string)   strlen(string)
  27# define unicode_strwidth(string) strlen(string)
  28# define unicode_status UNICODE_OFF
  29# define init_unicode() ((void)0)
  30# define reinit_unicode(LANG) ((void)0)
  31
  32#else
  33
  34# if CONFIG_LAST_SUPPORTED_WCHAR < 126 || CONFIG_LAST_SUPPORTED_WCHAR >= 0x30000
  35#  undef CONFIG_LAST_SUPPORTED_WCHAR
  36#  define CONFIG_LAST_SUPPORTED_WCHAR 0x2ffff
  37# endif
  38
  39# if CONFIG_LAST_SUPPORTED_WCHAR < 0x300
  40#  undef ENABLE_UNICODE_COMBINING_WCHARS
  41#  define ENABLE_UNICODE_COMBINING_WCHARS 0
  42# endif
  43
  44# if CONFIG_LAST_SUPPORTED_WCHAR < 0x1100
  45#  undef ENABLE_UNICODE_WIDE_WCHARS
  46#  define ENABLE_UNICODE_WIDE_WCHARS 0
  47# endif
  48
  49# if CONFIG_LAST_SUPPORTED_WCHAR < 0x590
  50#  undef  ENABLE_UNICODE_BIDI_SUPPORT
  51#  define ENABLE_UNICODE_BIDI_SUPPORT 0
  52# endif
  53
  54/* Number of unicode chars. Falls back to strlen() on invalid unicode */
  55size_t FAST_FUNC unicode_strlen(const char *string);
  56/* Width on terminal */
  57size_t FAST_FUNC unicode_strwidth(const char *string);
  58enum {
  59        UNI_FLAG_PAD = (1 << 0),
  60};
  61//UNUSED: unsigned FAST_FUNC unicode_padding_to_width(unsigned width, const char *src);
  62//UNUSED: char* FAST_FUNC unicode_conv_to_printable2(uni_stat_t *stats, const char *src, unsigned width, int flags);
  63char* FAST_FUNC unicode_conv_to_printable(uni_stat_t *stats, const char *src);
  64//UNUSED: char* FAST_FUNC unicode_conv_to_printable_maxwidth(uni_stat_t *stats, const char *src, unsigned maxwidth);
  65char* FAST_FUNC unicode_conv_to_printable_fixedwidth(/*uni_stat_t *stats,*/ const char *src, unsigned width);
  66
  67# if ENABLE_UNICODE_USING_LOCALE
  68
  69extern uint8_t unicode_status;
  70void init_unicode(void) FAST_FUNC;
  71void reinit_unicode(const char *LANG) FAST_FUNC;
  72
  73# else
  74
  75/* Homegrown Unicode support. It knows only C and Unicode locales. */
  76
  77#  if !ENABLE_FEATURE_CHECK_UNICODE_IN_ENV
  78#   define unicode_status UNICODE_ON
  79#   define init_unicode() ((void)0)
  80#   define reinit_unicode(LANG) ((void)0)
  81#  else
  82extern uint8_t unicode_status;
  83void init_unicode(void) FAST_FUNC;
  84void reinit_unicode(const char *LANG) FAST_FUNC;
  85#  endif
  86
  87#  undef MB_CUR_MAX
  88#  define MB_CUR_MAX 6
  89
  90/* Prevent name collisions */
  91#  define wint_t    bb_wint_t
  92#  define mbstate_t bb_mbstate_t
  93#  define mbstowcs  bb_mbstowcs
  94#  define wcstombs  bb_wcstombs
  95#  define wcrtomb   bb_wcrtomb
  96#  define iswspace  bb_iswspace
  97#  define iswalnum  bb_iswalnum
  98#  define iswpunct  bb_iswpunct
  99#  define wcwidth   bb_wcwidth
 100
 101typedef int32_t wint_t;
 102typedef struct {
 103        char bogus;
 104} mbstate_t;
 105
 106size_t mbstowcs(wchar_t *dest, const char *src, size_t n) FAST_FUNC;
 107size_t wcstombs(char *dest, const wchar_t *src, size_t n) FAST_FUNC;
 108size_t wcrtomb(char *s, wchar_t wc, mbstate_t *ps) FAST_FUNC;
 109int iswspace(wint_t wc) FAST_FUNC;
 110int iswalnum(wint_t wc) FAST_FUNC;
 111int iswpunct(wint_t wc) FAST_FUNC;
 112int wcwidth(unsigned ucs) FAST_FUNC;
 113#  if ENABLE_UNICODE_BIDI_SUPPORT
 114#   undef unicode_bidi_isrtl
 115int unicode_bidi_isrtl(wint_t wc) FAST_FUNC;
 116#   if ENABLE_UNICODE_NEUTRAL_TABLE
 117#    undef unicode_bidi_is_neutral_wchar
 118int unicode_bidi_is_neutral_wchar(wint_t wc) FAST_FUNC;
 119#   endif
 120#  endif
 121
 122
 123# endif /* !UNICODE_USING_LOCALE */
 124
 125#endif /* UNICODE_SUPPORT */
 126
 127POP_SAVED_FUNCTION_VISIBILITY
 128
 129#endif
 130