Move locale, unicode, and "use sendfile?" options to library tuning

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 138 insertions, 0 deletions

diff --git a/libbb/Config.src b/libbb/Config.src
index 6ba2562..18a40f2 100644
--- a/libbb/Config.src
+++ b/libbb/Config.src
@@ -153,6 +153,131 @@ config FEATURE_EDITING_ASK_TERMINAL
 	  correctly, or want to save on code size (about 400 bytes),
 	  then do not turn this option on.
 
+config LOCALE_SUPPORT
+	bool "Enable locale support (system needs locale for this to work)"
+	default n
+	help
+	  Enable this if your system has locale support and you would like
+	  busybox to support locale settings.
+
+config UNICODE_SUPPORT
+	bool "Support Unicode"
+	default y
+	help
+	  This makes various applets aware that one byte is not
+	  one character on screen.
+
+	  Busybox aims to eventually work correctly with Unicode displays.
+	  Any older encodings are not guaranteed to work.
+	  Probably by the time when busybox will be fully Unicode-clean,
+	  other encodings will be mainly of historic interest.
+
+config UNICODE_USING_LOCALE
+	bool "Use libc routines for Unicode (else uses internal ones)"
+	default n
+	depends on UNICODE_SUPPORT && LOCALE_SUPPORT
+	help
+	  With this option on, Unicode support is implemented using libc
+	  routines. Otherwise, internal implementation is used.
+	  Internal implementation is smaller.
+
+config FEATURE_CHECK_UNICODE_IN_ENV
+	bool "Check $LC_ALL, $LC_CTYPE and $LANG environment variables"
+	default n
+	depends on UNICODE_SUPPORT && !UNICODE_USING_LOCALE
+	help
+	  With this option on, Unicode support is activated
+	  only if locale-related variables have the value of the form
+	  "xxxx.utf8"
+
+	  Otherwise, Unicode support will be always enabled and active.
+
+config SUBST_WCHAR
+	int "Character code to substitute unprintable characters with"
+	depends on UNICODE_SUPPORT
+	default 63
+	help
+	  Typical values are 63 for '?' (works with any output device),
+	  30 for ASCII substitute control code,
+	  65533 (0xfffd) for Unicode replacement character.
+
+config LAST_SUPPORTED_WCHAR
+	int "Range of supported Unicode characters"
+	depends on UNICODE_SUPPORT
+	default 767
+	help
+	  Any character with Unicode value bigger than this is assumed
+	  to be non-printable on output device. Many applets replace
+	  such characters with substitution character.
+
+	  The idea is that many valid printable Unicode chars
+	  nevertheless are not displayed correctly. Think about
+	  combining charachers, double-wide hieroglyphs, obscure
+	  characters in dozens of ancient scripts...
+	  Many terminals, terminal emulators, xterms etc will fail
+	  to handle them correctly. Choose the smallest value
+	  which suits your needs.
+
+	  Typical values are:
+	  126 - ASCII only
+	  767 (0x2ff) - there are no combining chars in [0..767] range
+			(the range includes Latin 1, Latin Ext. A and B),
+			code is ~700 bytes smaller for this case.
+	  4351 (0x10ff) - there are no double-wide chars in [0..4351] range,
+			code is ~300 bytes smaller for this case.
+	  12799 (0x31ff) - nearly all non-ideographic characters are
+			available in [0..12799] range, including
+			East Asian scripts like katakana, hiragana, hangul,
+			bopomofo...
+	  0 - off, any valid printable Unicode character will be printed.
+
+config UNICODE_COMBINING_WCHARS
+	bool "Allow zero-width Unicode characters on output"
+	default n
+	depends on UNICODE_SUPPORT
+	help
+	  With this option off, any Unicode char with width of 0
+	  is substituted on output.
+
+config UNICODE_WIDE_WCHARS
+	bool "Allow wide Unicode characters on output"
+	default n
+	depends on UNICODE_SUPPORT
+	help
+	  With this option off, any Unicode char with width > 1
+	  is substituted on output.
+
+config UNICODE_BIDI_SUPPORT
+	bool "Bidirectional character-aware line input"
+	default n
+	depends on UNICODE_SUPPORT && !UNICODE_USING_LOCALE
+	help
+	  With this option on, right-to-left Unicode characters
+	  are treated differently on input (e.g. cursor movement).
+
+config UNICODE_NEUTRAL_TABLE
+	bool "In bidi input, support non-ASCII neutral chars too"
+	default n
+	depends on UNICODE_BIDI_SUPPORT
+	help
+	  In most cases it's enough to treat only ASCII non-letters
+	  (i.e. punctuation, numbers and space) as characters
+	  with neutral directionality.
+	  With this option on, more extensive (and bigger) table
+	  of neutral chars will be used.
+
+config UNICODE_PRESERVE_BROKEN
+	bool "Make it possible to enter sequences of chars which are not Unicode"
+	default n
+	depends on UNICODE_SUPPORT
+	help
+	  With this option on, on line-editing input (such as used by shells)
+	  invalid UTF-8 bytes are not substituted with the selected
+	  substitution character.
+	  For example, this means that entering 'l', 's', ' ', 0xff, [Enter]
+	  at shell prompt will list file named 0xff (single char name
+	  with char value 255), not file named '?'.
+
 config FEATURE_NON_POSIX_CP
 	bool "Non-POSIX, but safer, copying to special nodes"
 	default y
@@ -177,6 +302,19 @@ config FEATURE_VERBOSE_CP_MESSAGE
 	    cp: cannot stat '/vmlinuz/file': Not a directory
 	  This will cost you ~60 bytes.
 
+config FEATURE_USE_SENDFILE
+	bool "Use sendfile system call"
+	default y
+	select PLATFORM_LINUX
+	help
+	  When enabled, busybox will use the kernel sendfile() function
+	  instead of read/write loops to copy data between file descriptors
+	  (for example, cp command does this a lot).
+	  If sendfile() doesn't work, copying code falls back to read/write
+	  loop. sendfile() was originally implemented for faster I/O
+	  from files to sockets, but since Linux 2.6.33 it was extended
+	  to work for many more file types.
+
 config FEATURE_COPYBUF_KB
 	int "Copy buffer size, in kilobytes"
 	range 1 1024