Mercurial > hg > octave-nkf > gnulib-hg
annotate lib/unistr/u8-uctomb-aux.c @ 14079:97fc9a21a8fb
maint: update almost all copyright ranges to include 2011
Run the new "make update-copyright" rule.
| author | Jim Meyering <meyering@redhat.com> |
|---|---|
| date | Sat, 01 Jan 2011 20:17:23 +0100 |
| parents | c2cbabec01dd |
| children | 8250f2777afc |
| rev | line source |
|---|---|
| 8516 | 1 /* Conversion UCS-4 to UTF-8. |
|
14079
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maint: update almost all copyright ranges to include 2011
Jim Meyering <meyering@redhat.com>
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2 Copyright (C) 2002, 2006-2007, 2009-2011 Free Software Foundation, Inc. |
| 8516 | 3 Written by Bruno Haible <bruno@clisp.org>, 2002. |
| 4 | |
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Change copyright notice from LGPLv2.0+ to LGPLv3+.
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5 This program is free software: you can redistribute it and/or modify it |
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6 under the terms of the GNU Lesser General Public License as published |
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Bruno Haible <bruno@clisp.org>
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7 by the Free Software Foundation; either version 3 of the License, or |
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8 (at your option) any later version. |
| 8516 | 9 |
| 10 This program is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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13 Lesser General Public License for more details. |
| 8516 | 14 |
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Bruno Haible <bruno@clisp.org>
parents:
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15 You should have received a copy of the GNU Lesser General Public License |
|
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Bruno Haible <bruno@clisp.org>
parents:
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16 along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 8516 | 17 |
| 18 #include <config.h> | |
| 19 | |
| 20 /* Specification. */ | |
| 21 #include "unistr.h" | |
| 22 | |
| 23 int | |
| 24 u8_uctomb_aux (uint8_t *s, ucs4_t uc, int n) | |
| 25 { | |
| 26 int count; | |
| 27 | |
| 28 if (uc < 0x80) | |
| 29 /* The case n >= 1 is already handled by the caller. */ | |
| 30 return -2; | |
| 31 else if (uc < 0x800) | |
| 32 count = 2; | |
| 33 else if (uc < 0x10000) | |
| 34 { | |
| 35 if (uc < 0xd800 || uc >= 0xe000) | |
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36 count = 3; |
| 8516 | 37 else |
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parents:
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38 return -1; |
| 8516 | 39 } |
| 40 #if 0 | |
| 41 else if (uc < 0x200000) | |
| 42 count = 4; | |
| 43 else if (uc < 0x4000000) | |
| 44 count = 5; | |
| 45 else if (uc <= 0x7fffffff) | |
| 46 count = 6; | |
| 47 #else | |
| 48 else if (uc < 0x110000) | |
| 49 count = 4; | |
| 50 #endif | |
| 51 else | |
| 52 return -1; | |
| 53 | |
| 54 if (n < count) | |
| 55 return -2; | |
| 56 | |
| 57 switch (count) /* note: code falls through cases! */ | |
| 58 { | |
| 59 #if 0 | |
| 60 case 6: s[5] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x4000000; | |
| 61 case 5: s[4] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x200000; | |
| 62 #endif | |
| 63 case 4: s[3] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x10000; | |
| 64 case 3: s[2] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x800; | |
| 65 case 2: s[1] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0xc0; | |
| 66 /*case 1:*/ s[0] = uc; | |
| 67 } | |
| 68 return count; | |
| 69 } |