diff options
| author | Rob Clark <robdclark@gmail.com> | 2017-09-09 06:47:41 -0400 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2017-09-12 17:57:59 -0400 |
| commit | 274325c50951dd16ad2a6f45e79dc062ad47011b (patch) | |
| tree | d015f4c6ec87b84b12153bbb17b817203b778c31 /lib | |
| parent | 78178bb0c9dfe2a91a636a411291d8bab50e8a7d (diff) | |
vsprintf.c: add UTF-16 string (%ls) support
This is convenient for efi_loader which deals a lot with UTF-16. Only
enabled with CC_SHORT_WCHAR, leaving room to add a UTF-32 version when
CC_SHORT_WCHAR is not enabled.
Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/vsprintf.c | 30 |
1 files changed, 28 insertions, 2 deletions
diff --git a/lib/vsprintf.c b/lib/vsprintf.c index 874a2951f7..97bed9d36d 100644 --- a/lib/vsprintf.c +++ b/lib/vsprintf.c @@ -17,6 +17,7 @@ #include <linux/ctype.h> #include <common.h> +#include <charset.h> #include <div64.h> #define noinline __attribute__((noinline)) @@ -270,6 +271,26 @@ static char *string(char *buf, char *end, char *s, int field_width, return buf; } +static char *string16(char *buf, char *end, u16 *s, int field_width, + int precision, int flags) +{ + u16 *str = s ? s : L"<NULL>"; + int utf16_len = utf16_strnlen(str, precision); + u8 utf8[utf16_len * MAX_UTF8_PER_UTF16]; + int utf8_len, i; + + utf8_len = utf16_to_utf8(utf8, str, utf16_len) - utf8; + + if (!(flags & LEFT)) + while (utf8_len < field_width--) + ADDCH(buf, ' '); + for (i = 0; i < utf8_len; ++i) + ADDCH(buf, utf8[i]); + while (utf8_len < field_width--) + ADDCH(buf, ' '); + return buf; +} + #ifdef CONFIG_CMD_NET static const char hex_asc[] = "0123456789abcdef"; #define hex_asc_lo(x) hex_asc[((x) & 0x0f)] @@ -528,8 +549,13 @@ repeat: continue; case 's': - str = string(str, end, va_arg(args, char *), - field_width, precision, flags); + if (qualifier == 'l' && !IS_ENABLED(CONFIG_SPL_BUILD)) { + str = string16(str, end, va_arg(args, u16 *), + field_width, precision, flags); + } else { + str = string(str, end, va_arg(args, char *), + field_width, precision, flags); + } continue; case 'p': |