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 747026abeef1fd6038779bf7510bd6bcc847fc65..e9e2bd14a7dda49de36c90714fd8b84c92762c05 100644 (file)
--- a/include/unicode.h
+++ b/include/unicode.h
@@ -23,34 +23,37 @@ enum {
 
 #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 LAST_SUPPORTED_WCHAR < 0x300
+# if CONFIG_LAST_SUPPORTED_WCHAR < 0x300
 #  undef ENABLE_UNICODE_COMBINING_WCHARS
 #  define ENABLE_UNICODE_COMBINING_WCHARS 0
 # endif
 
-# if LAST_SUPPORTED_WCHAR < 0x1100
+# 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),
 };