/* * Copyright The Open Group * Permission to use, copy, modify, distribute, and sell this software and its * documentation for any purpose is hereby granted without fee, provided that the * above copyright notice appear in all copies and that both that copyright notice * and this permission notice appear in supporting documentation. * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE OPEN GROUP * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * Except as contained in this notice, the name of The Open Group shall not be used * in advertising or otherwise to promote the sale, use or other dealings in this * Software without prior written authorization from The Open Group. * Portions also covered by other licenses as noted in the above URL. */ /* * GB18030 */ /* * GB18030, as implemented in glibc-2.2, is an extension of GBK (= CP936). * It adds the following ranges: * 1. Two-byte range * 0xA2E3, 0xA8BF, 0xA98A..0xA995, 0xFE50..0xFE9F * 2. Four-byte range * 0x{81..84}{30..39}{81..FE}{30..39} * Most of Unicode plane 1 in Unicode order. * Start: 0x81308130 = 0x0080 * End: 0x8431A439 = 0xFFFF * 3. Four-byte range * 0x{90..E3}{30..39}{81..FE}{30..39} * Unicode plane 2..16 in Unicode order. * Start: 0x90308130 = 0x010000 * End: 0xE3329A35 = 0x10FFFF */ #include "gb18030ext.h" #include "gb18030uni.h" #define sun static int gb18030_mbtowc (conv_t conv, ucs4_t *pwc, const unsigned char *s, int n) { int ret; #ifdef sun int v = (s[0] << 8 | s[1]); unsigned char buf[4]; buf[3] = 0x30 + v%10; v/=10; buf[2] = 0x81 + v%126; v/=126; buf[1] = 0x30 + v%10; v/=10; buf[0] = 0x81 + v; /* Code set 2 (remainder of Unicode U+0000..U+FFFF) */ ret = gb18030uni_mbtowc(conv,pwc,buf,4); if (ret != RET_ILSEQ) ret = 2; return ret; #else /* Code set 0 (ASCII) */ if (*s < 0x80) return ascii_mbtowc(conv,pwc,s,n); /* Code set 1 (GBK extended) */ ret = gbk_mbtowc(conv,pwc,s,n); if (ret != RET_ILSEQ) return ret; ret = gb18030ext_mbtowc(conv,pwc,s,n); if (ret != RET_ILSEQ) return ret; /* Code set 2 (remainder of Unicode U+0000..U+FFFF) */ ret = gb18030uni_mbtowc(conv,pwc,s,n); if (ret != RET_ILSEQ) return ret; /* Code set 3 (Unicode U+10000..U+10FFFF) */ { unsigned char c1 = s[0]; if (c1 >= 0x90 && c1 <= 0xe3) { if (n >= 2) { unsigned char c2 = s[1]; if (c2 >= 0x30 && c2 <= 0x39) { if (n >= 3) { unsigned char c3 = s[2]; if (c3 >= 0x81 && c3 <= 0xfe) { if (n >= 4) { unsigned char c4 = s[3]; if (c4 >= 0x30 && c4 <= 0x39) { unsigned int i = (((c1 - 0x90) * 10 + (c2 - 0x30)) * 126 + (c3 - 0x81)) * 10 + (c4 - 0x30); if (i >= 0 && i < 0x100000) { *pwc = (ucs4_t) (0x10000 + i); return 4; } } return RET_ILSEQ; } return RET_TOOFEW(0); } return RET_ILSEQ; } return RET_TOOFEW(0); } return RET_ILSEQ; } return RET_TOOFEW(0); } return RET_ILSEQ; } #endif } static int gb18030_wctomb (conv_t conv, unsigned char *r, ucs4_t wc, int n) { int ret; #ifndef sun /* Code set 0 (ASCII) */ ret = ascii_wctomb(conv,r,wc,n); if (ret != RET_ILUNI) return ret; /* Code set 1 (GBK extended) */ ret = gbk_wctomb(conv,r,wc,n); if (ret != RET_ILUNI) return ret; ret = gb18030ext_wctomb(conv,r,wc,n); if (ret != RET_ILUNI) return ret; #endif /* Code set 2 (remainder of Unicode U+0000..U+FFFF) */ ret = gb18030uni_wctomb(conv,r,wc,n); if (ret != RET_ILSEQ) #ifdef sun { int v = 12600 * (r[0] - 0x81) + 1260 * (r[1] - 0x30) + 10 * (r[2] - 0x81) + (r[3] - 0x30); r[0] = (v & 0xff00) >> 8; r[1] = v & 0xff; ret = 2; } #endif return ret; #ifndef sun /* Code set 3 (Unicode U+10000..U+10FFFF) */ if (n >= 4) { if (wc >= 0x10000 && wc < 0x110000) { unsigned int i = wc - 0x10000; r[3] = (i % 10) + 0x30; i = i / 10; r[2] = (i % 126) + 0x81; i = i / 126; r[1] = (i % 10) + 0x30; i = i / 10; r[0] = i + 0x90; return 4; } return RET_ILUNI; } return RET_TOOSMALL; #endif }