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| author | Denys Vlasenko | 2010-01-24 07:44:03 +0100 |
|---|---|---|
| committer | Denys Vlasenko | 2010-01-24 07:44:03 +0100 |
| commit | 9f93d621925966c22ee51fdcb5def8e131596f9b (patch) | |
| tree | c1024fa92d6f422df6cf0991d5c9c8a4977b8625 /include/unicode.h | |
| parent | 5da9f96ad85a2d9119d92c7a3d89deca7d904210 (diff) | |
| download | busybox-9f93d621925966c22ee51fdcb5def8e131596f9b.zip busybox-9f93d621925966c22ee51fdcb5def8e131596f9b.tar.gz | |
libbb: better unicode width support. Hopefully fixes bug 839.
Also opens up a possibility to make other unicode stuff smaller
and more correct later. but:
function old new delta
static.combining - 516 +516
bb_wcwidth - 328 +328
unicode_cut_nchars - 141 +141
mbstowc_internal - 93 +93
in_table - 78 +78
cal_main 899 961 +62
static.combining0x10000 - 40 +40
unicode_strlen - 31 +31
bb_mbstrlen 31 - -31
bb_mbstowcs 173 102 -71
------------------------------------------------------------------------------
(add/remove: 7/1 grow/shrink: 1/1 up/down: 1289/-102) Total: 1187 bytes
Uses code of Markus Kuhn, which is in public domain:
http://www.cl.cam.ac.uk/~mgk25/ucs/wcwidth.c
"Permission to use, copy, modify, and distribute this software
for any purpose and without fee is hereby granted. The author
disclaims all warranties with regard to this software."
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'include/unicode.h')
| -rw-r--r-- | include/unicode.h | 31 |
1 files changed, 7 insertions, 24 deletions
diff --git a/include/unicode.h b/include/unicode.h index e11f2f9..f1a252c 100644 --- a/include/unicode.h +++ b/include/unicode.h @@ -13,13 +13,16 @@ enum { #if !ENABLE_FEATURE_ASSUME_UNICODE -# define bb_mbstrlen(string) strlen(string) +# define unicode_strlen(string) strlen(string) +# define unicode_scrlen(string) TODO # define unicode_status UNICODE_OFF # define init_unicode() ((void)0) #else -size_t bb_mbstrlen(const char *string) FAST_FUNC; +size_t FAST_FUNC unicode_strlen(const char *string); +char* FAST_FUNC unicode_cut_nchars(unsigned width, const char *src); +unsigned FAST_FUNC unicode_padding_to_width(unsigned width, const char *src); # if ENABLE_LOCALE_SUPPORT @@ -30,7 +33,7 @@ void init_unicode(void) FAST_FUNC; # else -/* Crude "locale support" which knows only C and Unicode locales */ +/* Homegrown Unicode support. It knows only C and Unicode locales. */ # if !ENABLE_FEATURE_CHECK_UNICODE_IN_ENV # define unicode_status UNICODE_ON @@ -52,6 +55,7 @@ void init_unicode(void) FAST_FUNC; # define iswspace bb_iswspace # define iswalnum bb_iswalnum # define iswpunct bb_iswpunct +# define wcwidth bb_wcwidth typedef int32_t wint_t; typedef struct { @@ -68,27 +72,6 @@ int iswpunct(wint_t wc) FAST_FUNC; # endif /* !LOCALE_SUPPORT */ - -# if 0 /* TODO: better support for printfing Unicode fields: */ - -/* equivalent to printf("%-20.20s", str) */ -char unicode_buffer[20 * MB_CUR_MAX]; -printf("%s", unicode_exact(20, str, unicode_buffer); -/* no need to free() anything */ - -/* equivalent to printf("%-20s", str) */ -char *malloced = unicode_minimum(20, str); -printf("%s", malloced); -free(malloced); /* ugh */ - -/* equivalent to printf("%-20s", str), better one */ -printf("%s%*s", str, unicode_pad_to_width(str, 20), ""); -/* equivalent to printf("%20s", str) */ -printf("%*s%s", unicode_pad_to_width(str, 20), "", str); - -# endif - - #endif /* FEATURE_ASSUME_UNICODE */ #endif |