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author | Lorry Tar Creator <lorry-tar-importer@baserock.org> | 2014-12-24 07:38:37 +0000 |
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committer | <> | 2015-02-02 12:02:29 +0000 |
commit | 482840e61f86ca321838a91e902c41d40c098bbb (patch) | |
tree | 01ea2e242fd2792d19fe192476601587901db794 /gettext-tools/gnulib-lib/unistr/u8-uctomb-aux.c | |
download | gettext-tarball-482840e61f86ca321838a91e902c41d40c098bbb.tar.gz |
Imported from /home/lorry/working-area/delta_gettext-tarball/gettext-0.19.4.tar.xz.gettext-0.19.4
Diffstat (limited to 'gettext-tools/gnulib-lib/unistr/u8-uctomb-aux.c')
-rw-r--r-- | gettext-tools/gnulib-lib/unistr/u8-uctomb-aux.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/gettext-tools/gnulib-lib/unistr/u8-uctomb-aux.c b/gettext-tools/gnulib-lib/unistr/u8-uctomb-aux.c new file mode 100644 index 0000000..8fdd88b --- /dev/null +++ b/gettext-tools/gnulib-lib/unistr/u8-uctomb-aux.c @@ -0,0 +1,69 @@ +/* Conversion UCS-4 to UTF-8. + Copyright (C) 2002, 2006-2007, 2009-2014 Free Software Foundation, Inc. + Written by Bruno Haible <bruno@clisp.org>, 2002. + + This program 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. + + This program 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 this program. If not, see <http://www.gnu.org/licenses/>. */ + +#include <config.h> + +/* Specification. */ +#include "unistr.h" + +int +u8_uctomb_aux (uint8_t *s, ucs4_t uc, int n) +{ + int count; + + if (uc < 0x80) + /* The case n >= 1 is already handled by the caller. */ + return -2; + else if (uc < 0x800) + count = 2; + else if (uc < 0x10000) + { + if (uc < 0xd800 || uc >= 0xe000) + count = 3; + else + return -1; + } +#if 0 + else if (uc < 0x200000) + count = 4; + else if (uc < 0x4000000) + count = 5; + else if (uc <= 0x7fffffff) + count = 6; +#else + else if (uc < 0x110000) + count = 4; +#endif + else + return -1; + + if (n < count) + return -2; + + switch (count) /* note: code falls through cases! */ + { +#if 0 + case 6: s[5] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x4000000; + case 5: s[4] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x200000; +#endif + case 4: s[3] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x10000; + case 3: s[2] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x800; + case 2: s[1] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0xc0; + /*case 1:*/ s[0] = uc; + } + return count; +} |