On Mon, Aug 24, 2009 at 9:22 PM, Vladimir 'phcoder'
Serbinenko<phco...@gmail.com> wrote:
> Splitted from my newtree patch
>
> --
> Regards
> Vladimir 'phcoder' Serbinenko
>
> Personal git repository: http://repo.or.cz/w/grub2/phcoder.git
>
--
Regards
Vladimir 'phcoder' Serbinenko
Personal git repository: http://repo.or.cz/w/grub2/phcoder.git
2009-08-24 Vladimir Serbinenko <phco...@gmail.com>
UTF-8 to UTF-16 transformation.
* conf/common.rmk (pkglib_MODULES): Add utf.mod
(utf_mod_SOURCES): New variable.
(utf_mod_CFLAGS): Likewise.
(utf_mod_LDFLAGS): Likewise.
* include/grub/utf.h: New file.
* lib/utf.c: New file. (Based on grub_utf8_to_ucs4 from kern/misc.c)
diff --git a/conf/common.rmk b/conf/common.rmk
index b0d3785..b5a6048 100644
--- a/conf/common.rmk
+++ b/conf/common.rmk
@@ -617,3 +617,8 @@ pkglib_MODULES += setjmp.mod
setjmp_mod_SOURCES = lib/$(target_cpu)/setjmp.S
setjmp_mod_ASFLAGS = $(COMMON_ASFLAGS)
setjmp_mod_LDFLAGS = $(COMMON_LDFLAGS)
+
+pkglib_MODULES += utf.mod
+utf_mod_SOURCES = lib/utf.c
+utf_mod_CFLAGS = $(COMMON_CFLAGS)
+utf_mod_LDFLAGS = $(COMMON_LDFLAGS)
diff --git a/include/grub/utf.h b/include/grub/utf.h
new file mode 100644
index 0000000..2091916
--- /dev/null
+++ b/include/grub/utf.h
@@ -0,0 +1,29 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 2009 Free Software Foundation, Inc.
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GRUB_UTF_HEADER
+#define GRUB_UTF_HEADER 1
+
+#include <grub/types.h>
+
+grub_ssize_t
+grub_utf8_to_utf16 (grub_uint16_t *dest, grub_size_t destsize,
+ const grub_uint8_t *src, grub_size_t srcsize,
+ const grub_uint8_t **srcend);
+
+#endif
diff --git a/lib/utf.c b/lib/utf.c
new file mode 100644
index 0000000..1f89f2f
--- /dev/null
+++ b/lib/utf.c
@@ -0,0 +1,116 @@
+/*
+ * GRUB -- GRand Unified Bootloader
+ * Copyright (C) 1999,2000,2001,2002,2003,2004,2005,2006,2007,2008,2009 Free
Software Foundation, Inc.
+ *
+ * GRUB is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GRUB is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GRUB. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* Convert a (possibly null-terminated) UTF-8 string of at most SRCSIZE
+ bytes (if SRCSIZE is -1, it is ignored) in length to a UTF-16 string.
+ Return the number of characters converted. DEST must be able to hold
+ at least DESTSIZE characters. If an invalid sequence is found, return -1.
+ If SRCEND is not NULL, then *SRCEND is set to the next byte after the
+ last byte used in SRC. */
+
+#include <grub/utf.h>
+
+grub_ssize_t
+grub_utf8_to_utf16 (grub_uint16_t *dest, grub_size_t destsize,
+ const grub_uint8_t *src, grub_size_t srcsize,
+ const grub_uint8_t **srcend)
+{
+ grub_uint16_t *p = dest;
+ int count = 0;
+ grub_uint32_t code = 0;
+
+ if (srcend)
+ *srcend = src;
+
+ while (srcsize && destsize)
+ {
+ grub_uint32_t c = *src++;
+ if (srcsize != (grub_size_t)-1)
+ srcsize--;
+ if (count)
+ {
+ if ((c & 0xc0) != 0x80)
+ {
+ /* invalid */
+ return -1;
+ }
+ else
+ {
+ code <<= 6;
+ code |= (c & 0x3f);
+ count--;
+ }
+ }
+ else
+ {
+ if (c == 0)
+ break;
+
+ if ((c & 0x80) == 0x00)
+ code = c;
+ else if ((c & 0xe0) == 0xc0)
+ {
+ count = 1;
+ code = c & 0x1f;
+ }
+ else if ((c & 0xf0) == 0xe0)
+ {
+ count = 2;
+ code = c & 0x0f;
+ }
+ else if ((c & 0xf8) == 0xf0)
+ {
+ count = 3;
+ code = c & 0x07;
+ }
+ else if ((c & 0xfc) == 0xf8)
+ {
+ count = 4;
+ code = c & 0x03;
+ }
+ else if ((c & 0xfe) == 0xfc)
+ {
+ count = 5;
+ code = c & 0x01;
+ }
+ else
+ return -1;
+ }
+
+ if (count == 0)
+ {
+ if (destsize < 2 && code > 0x10000)
+ break;
+ if (code > 0x10000)
+ {
+ *p++ = 0xD800 + (((code - 0x10000) >> 12) & 0xfff);
+ *p++ = 0xDC00 + ((code - 0x10000) & 0xfff);
+ destsize -= 2;
+ }
+ else
+ {
+ *p++ = code;
+ destsize--;
+ }
+ }
+ }
+
+ if (srcend)
+ *srcend = src;
+ return p - dest;
+}
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