release/src/router/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
  13 PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
  14
  15 enum {
  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 */
  55 size_t FAST_FUNC unicode_strlen(const char *string);
  56 /* Width on terminal */
  57 size_t FAST_FUNC unicode_strwidth(const char *string);
  58 enum {
  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);
  63 char* 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);
  65 char* FAST_FUNC unicode_conv_to_printable_fixedwidth(/*uni_stat_t *stats,*/ const char *src, unsigned width);
  66
  67 # if ENABLE_UNICODE_USING_LOCALE
  68
  69 extern uint8_t unicode_status;
  70 void init_unicode(void) FAST_FUNC;
  71 void 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
  82 extern uint8_t unicode_status;
  83 void init_unicode(void) FAST_FUNC;
  84 void 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
 101 typedef int32_t wint_t;
 102 typedef struct {
 103         char bogus;
 104 } mbstate_t;
 105
 106 size_t mbstowcs(wchar_t *dest, const char *src, size_t n) FAST_FUNC;
 107 size_t wcstombs(char *dest, const wchar_t *src, size_t n) FAST_FUNC;
 108 size_t wcrtomb(char *s, wchar_t wc, mbstate_t *ps) FAST_FUNC;
 109 int iswspace(wint_t wc) FAST_FUNC;
 110 int iswalnum(wint_t wc) FAST_FUNC;
 111 int iswpunct(wint_t wc) FAST_FUNC;
 112 int wcwidth(unsigned ucs) FAST_FUNC;
 113 #  if ENABLE_UNICODE_BIDI_SUPPORT
 114 #   undef unicode_bidi_isrtl
 115 int unicode_bidi_isrtl(wint_t wc) FAST_FUNC;
 116 #   if ENABLE_UNICODE_NEUTRAL_TABLE
 117 #    undef unicode_bidi_is_neutral_wchar
 118 int 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
 127 POP_SAVED_FUNCTION_VISIBILITY
 128
 129 #endif