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 05bdbca02b2ca90d35efaba3bc5cee37d54ecbaa..e9e2bd14a7dda49de36c90714fd8b84c92762c05 100644 (file)
--- a/include/unicode.h
+++ b/include/unicode.h
@@ -5,7 +5,7 @@
 #ifndef UNICODE_H
 #define UNICODE_H 1
 
-#if ENABLE_LOCALE_SUPPORT
+#if ENABLE_UNICODE_USING_LOCALE
 # include <wchar.h>
 # include <wctype.h>
 #endif
@@ -18,28 +18,42 @@ enum {
        UNICODE_ON = 2,
 };
 
-#define unicode_isrtl(wc) 0
+#define unicode_bidi_isrtl(wc) 0
+#define unicode_bidi_is_neutral_wchar(wc) (wc <= 126 && !isalpha(wc))
 
-#if !ENABLE_FEATURE_ASSUME_UNICODE
+#if !ENABLE_UNICODE_SUPPORT
 
-# define unicode_strlen(string) strlen(string)
+# 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
-#  define LAST_SUPPORTED_WCHAR 0x2ffff
-# else
-#  define LAST_SUPPORTED_WCHAR CONFIG_LAST_SUPPORTED_WCHAR
+#  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 LAST_SUPPORTED_WCHAR < 0x590
+# 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),
 };
@@ -49,7 +63,7 @@ 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
 
 extern uint8_t unicode_status;
 void init_unicode(void) FAST_FUNC;
@@ -91,15 +105,20 @@ 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_isrtl
-int unicode_isrtl(wint_t wc) FAST_FUNC;
+#   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 /* !LOCALE_SUPPORT */
+# endif /* !UNICODE_USING_LOCALE */
 
-#endif /* FEATURE_ASSUME_UNICODE */
+#endif /* UNICODE_SUPPORT */
 
 POP_SAVED_FUNCTION_VISIBILITY