xz compression detection: avoid the need to seek

[oweals/busybox.git] / include / unicode.h

diff --git a/include/unicode.h b/include/unicode.h
index 25ef7407eb89413a5d72adf917e23678479a4e29..e9e2bd14a7dda49de36c90714fd8b84c92762c05 100644 (file)
--- a/include/unicode.h
+++ b/include/unicode.h
@@ -5,21 +5,55 @@
 #ifndef UNICODE_H
 #define UNICODE_H 1
 
+#if ENABLE_UNICODE_USING_LOCALE
+# include <wchar.h>
+# include <wctype.h>
+#endif
+
+PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
+
 enum {
        UNICODE_UNKNOWN = 0,
        UNICODE_OFF = 1,
        UNICODE_ON = 2,
 };
 
-#if !ENABLE_FEATURE_ASSUME_UNICODE
+#define unicode_bidi_isrtl(wc) 0
+#define unicode_bidi_is_neutral_wchar(wc) (wc <= 126 && !isalpha(wc))
 
-# define unicode_strlen(string) strlen(string)
+#if !ENABLE_UNICODE_SUPPORT
+
+# define unicode_strlen(string)   strlen(string)
+# define unicode_strwidth(string) strlen(string)
 # define unicode_status UNICODE_OFF
 # define init_unicode() ((void)0)
 
 #else
 
+# if CONFIG_LAST_SUPPORTED_WCHAR < 126 || CONFIG_LAST_SUPPORTED_WCHAR >= 0x30000
+#  undef CONFIG_LAST_SUPPORTED_WCHAR
+#  define CONFIG_LAST_SUPPORTED_WCHAR 0x2ffff
+# endif
+
+# if CONFIG_LAST_SUPPORTED_WCHAR < 0x300
+#  undef ENABLE_UNICODE_COMBINING_WCHARS
+#  define ENABLE_UNICODE_COMBINING_WCHARS 0
+# endif
+
+# if CONFIG_LAST_SUPPORTED_WCHAR < 0x1100
+#  undef ENABLE_UNICODE_WIDE_WCHARS
+#  define ENABLE_UNICODE_WIDE_WCHARS 0
+# endif
+
+# if CONFIG_LAST_SUPPORTED_WCHAR < 0x590
+#  undef  ENABLE_UNICODE_BIDI_SUPPORT
+#  define ENABLE_UNICODE_BIDI_SUPPORT 0
+# endif
+
+/* Number of unicode chars. Falls back to strlen() on invalid unicode */
 size_t FAST_FUNC unicode_strlen(const char *string);
+/* Width on terminal */
+size_t FAST_FUNC unicode_strwidth(const char *string);
 enum {
        UNI_FLAG_PAD = (1 << 0),
 };
@@ -29,10 +63,8 @@ char* FAST_FUNC unicode_conv_to_printable(uni_stat_t *stats, const char *src);
 char* FAST_FUNC unicode_conv_to_printable_maxwidth(uni_stat_t *stats, const char *src, unsigned maxwidth);
 char* FAST_FUNC unicode_conv_to_printable_fixedwidth(uni_stat_t *stats, const char *src, unsigned width);
 
-# if ENABLE_LOCALE_SUPPORT
+# if ENABLE_UNICODE_USING_LOCALE
 
-#  include <wchar.h>
-#  include <wctype.h>
 extern uint8_t unicode_status;
 void init_unicode(void) FAST_FUNC;
 
@@ -73,10 +105,21 @@ size_t wcrtomb(char *s, wchar_t wc, mbstate_t *ps) FAST_FUNC;
 int iswspace(wint_t wc) FAST_FUNC;
 int iswalnum(wint_t wc) FAST_FUNC;
 int iswpunct(wint_t wc) FAST_FUNC;
+int wcwidth(unsigned ucs) FAST_FUNC;
+#  if ENABLE_UNICODE_BIDI_SUPPORT
+#   undef unicode_bidi_isrtl
+int unicode_bidi_isrtl(wint_t wc) FAST_FUNC;
+#   if ENABLE_UNICODE_NEUTRAL_TABLE
+#    undef unicode_bidi_is_neutral_wchar
+int unicode_bidi_is_neutral_wchar(wint_t wc) FAST_FUNC;
+#   endif
+#  endif
+
 
+# endif /* !UNICODE_USING_LOCALE */
 
-# endif /* !LOCALE_SUPPORT */
+#endif /* UNICODE_SUPPORT */
 
-#endif /* FEATURE_ASSUME_UNICODE */
+POP_SAVED_FUNCTION_VISIBILITY
 
 #endif