1 /* -*- buffer-read-only: t -*- vi: set ro: */ 2 /* DO NOT EDIT! GENERATED AUTOMATICALLY! */ 3 /* Conversion UCS-4 to UTF-8. 4 Copyright (C) 2002, 2006-2007, 2009-2011 Free Software Foundation, Inc. 5 Written by Bruno Haible <bruno@clisp.org>, 2002. 6 7 This program is free software: you can redistribute it and/or modify it 8 under the terms of the GNU General Public License as published 9 by the Free Software Foundation; either version 3 of the License, or 10 (at your option) any later version. 11 12 This program is distributed in the hope that it will be useful, 13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 General Public License for more details. 16 17 You should have received a copy of the GNU General Public License 18 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 19 20 #include <config.h> 21 22 /* Specification. */ 23 #include "unistr.h" 24 25 int 26 u8_uctomb_aux (uint8_t *s, ucs4_t uc, int n) 27 { 28 int count; 29 30 if (uc < 0x80) 31 /* The case n >= 1 is already handled by the caller. */ 32 return -2; 33 else if (uc < 0x800) 34 count = 2; 35 else if (uc < 0x10000) 36 { 37 if (uc < 0xd800 || uc >= 0xe000) 38 count = 3; 39 else 40 return -1; 41 } 42 #if 0 43 else if (uc < 0x200000) 44 count = 4; 45 else if (uc < 0x4000000) 46 count = 5; 47 else if (uc <= 0x7fffffff) 48 count = 6; 49 #else 50 else if (uc < 0x110000) 51 count = 4; 52 #endif 53 else 54 return -1; 55 56 if (n < count) 57 return -2; 58 59 switch (count) /* note: code falls through cases! */ 60 { 61 #if 0 62 case 6: s[5] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x4000000; 63 case 5: s[4] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x200000; 64 #endif 65 case 4: s[3] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x10000; 66 case 3: s[2] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0x800; 67 case 2: s[1] = 0x80 | (uc & 0x3f); uc = uc >> 6; uc |= 0xc0; 68 /*case 1:*/ s[0] = uc; 69 } 70 return count; 71 } 72