/* WARNING: This file was generated by dkct. Changes you make here will be lost if dkct is run again! You should modify the original source and run dkct on it. Original source: dk4utf16.ctr */ /* Copyright (C) 2015-2017, Dirk Krause Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. * Redistributions in binary form must reproduce the above opyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. * Neither the name of the author nor the names of contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /** @file dk4utf16.c The dk4utf16 module. */ #line 171 "dk4utf16.ctr" #include "dk4conf.h" #include "dk4types.h" #include "dk4error.h" #include "dk4utf16.h" #include "dk4mem.h" #line 181 "dk4utf16.ctr" /** State value in dk4_utf16_decoder_t. */ enum { /** No surrogate yet. */ DK4_UTF16_DEC_ST_EMPTY = 0, /** Found high surrogate, expecting corresponding low surrogate. */ DK4_UTF16_DEC_ST_HAVE_HIGH_SURROGATE , /** Found low surrogate, expecting corresponding high surrogate. */ DK4_UTF16_DEC_ST_HAVE_LOW_SURROGATE }; void dk4utf16_init(dk4_utf16_decoder_t *ptr) { if (NULL != ptr) { ptr->uc = dkC32(0); ptr->state = DK4_UTF16_DEC_ST_EMPTY; } } int dk4utf16_add(dk4_utf16_decoder_t *ptr, dk4_c16_t word) { int back = DK4_EDSTM_ERROR; if (NULL != ptr) { switch (ptr->state) { case DK4_UTF16_DEC_ST_EMPTY: { if ((dkC32(0x0000DC00) & ((dk4_c32_t)word)) == dkC32(0x0000DC00)) { ptr->state = DK4_UTF16_DEC_ST_HAVE_LOW_SURROGATE; ptr->uc = ((dk4_c32_t)word) & dkC32(0x000003FF); back = DK4_EDSTM_ACCEPT; } else { if ((dkC32(0x0000DC00) & ((dk4_c32_t)word)) == dkC32(0x0000D800)) { ptr->state = DK4_UTF16_DEC_ST_HAVE_HIGH_SURROGATE; ptr->uc = ((((dk4_c32_t)word) << 10) & dkC32(0x000FFC00)); back = DK4_EDSTM_ACCEPT; } else { ptr->uc = ((dk4_c32_t)word) & dkC32(0x0000FFFF); back = DK4_EDSTM_FINISHED; } } } break; case DK4_UTF16_DEC_ST_HAVE_HIGH_SURROGATE: { if ((dkC32(0x0000DC00) & ((dk4_c32_t)word)) == dkC32(0x0000DC00)) { ptr->uc |= (((dk4_c32_t)word) & dkC32(0x000003FF)); ptr->uc += dkC32(0x00010000); ptr->state = DK4_UTF16_DEC_ST_EMPTY; back = DK4_EDSTM_FINISHED; } else { back = DK4_EDSTM_ERROR; ptr->state = DK4_UTF16_DEC_ST_EMPTY; } } break; case DK4_UTF16_DEC_ST_HAVE_LOW_SURROGATE: { if ((((dk4_c32_t)word) & dkC32(0x0000DC00)) == dkC32(0x0000D800)) { ptr->uc |= ((((dk4_c32_t)word) << 10) & dkC32(0x000FFC00)); ptr->uc += dkC32(0x00010000); ptr->state = DK4_UTF16_DEC_ST_EMPTY; back = DK4_EDSTM_FINISHED; } else { back = DK4_EDSTM_ERROR; ptr->state = DK4_UTF16_DEC_ST_EMPTY; } } break; } } return back; } dk4_c32_t dk4utf16_get(dk4_utf16_decoder_t *ptr) { dk4_c32_t back = dkC32(0); if (NULL != ptr) { back = ptr->uc; } return back; } int dk4utf16_is_empty(dk4_utf16_decoder_t *ptr) { int back = 0; if (NULL != ptr) { if (DK4_UTF16_DEC_ST_EMPTY == ptr->state) { back = 1; } } return back; } int dk4utf16_encode(dk4_c16_t *rb, size_t *pszrb, dk4_c32_t c, dk4_er_t *erp) { int back = 0; #line 297 "dk4utf16.ctr" if ((NULL != rb) && (NULL != pszrb)) { if (2 < *pszrb) { #line 299 "dk4utf16.ctr" if ( dkC32(0x00010000) <= c ) { #line 300 "dk4utf16.ctr" if ( dkC32(0x0010FFFF) >= c ) { #line 301 "dk4utf16.ctr" back = 1; *pszrb = 2; rb[0] = (dk4_c16_t)(((c >> 10) & dkC32(0x000003FF)) | dkC32(0x0000D800)); rb[1] = (dk4_c16_t)((c & dkC32(0x000003FF)) | dkC32(0x0000DC00)); rb[2] = (dk4_c16_t)0; } else { #line 309 "dk4utf16.ctr" dk4error_set_simple_error_code(erp, DK4_E_SYNTAX); } } else { #line 312 "dk4utf16.ctr" #if VERSION_BEFORE_20141125 if ((0x0000DC00 & c) != dkC32(0x0000DC00)) { #line 314 "dk4utf16.ctr" if ((0x0000DC00 & c) != dkC32(0x0000D800)) { #line 315 "dk4utf16.ctr" back = 1; *pszrb = 1; rb[0] = (dk4_c16_t)(c & dkC32(0x0000FFFF)); rb[1] = (dk4_c16_t)0; } else { #line 320 "dk4utf16.ctr" dk4error_set_simple_error_code(erp, DK4_E_SYNTAX); } } else { #line 323 "dk4utf16.ctr" dk4error_set_simple_error_code(erp, DK4_E_SYNTAX); } #else if ((dkC32(0x0000DFFF) < c) || (dkC32(0x0000D800) > c)) { #line 328 "dk4utf16.ctr" back = 1; *pszrb = 1; rb[0] = (dk4_c16_t)(c & dkC32(0x0000FFFF)); rb[1] = (dk4_c16_t)0; } else { #line 333 "dk4utf16.ctr" dk4error_set_simple_error_code(erp, DK4_E_SYNTAX); } #endif } } else { #line 338 "dk4utf16.ctr" dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL); } } else { #line 341 "dk4utf16.ctr" dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); } #line 343 "dk4utf16.ctr" return back; } void dk4utf16_byte_init(dk4_utf16_byte_decoder_t *ptr, int msb) { if (NULL != ptr) { dk4utf16_init(&(ptr->dec)); ptr->msb = msb; ptr->state = 0; ptr->saved = (dk4_c16_t)0; } } int dk4utf16_byte_add(dk4_utf16_byte_decoder_t *ptr, unsigned char byte) { int back = DK4_EDSTM_ERROR; if (NULL != ptr) { if (0 != ptr->state) { ptr->state = 0; if (0 != ptr->msb) { ptr->saved |= (((dk4_c16_t)byte) & dkC16(0x00FF)); } else { ptr->saved |= ((((dk4_c16_t)byte) << 8) & dkC16(0xFF00)); } back = dk4utf16_add(&(ptr->dec), ptr->saved); ptr->saved = (dk4_c16_t)0; } else { ptr->state = 1; if (0 != ptr->msb) { ptr->saved = ((((dk4_c16_t)byte) << 8) & dkC16(0xFF00)); } else { ptr->saved = (((dk4_c16_t)byte) & dkC16(0x00FF)); } back = DK4_EDSTM_ACCEPT; } } return back; } dk4_c32_t dk4utf16_byte_get(dk4_utf16_byte_decoder_t *ptr) { dk4_c32_t back = dkC32(0); if (NULL != ptr) { back = dk4utf16_get(&(ptr->dec)); } return back; } int dk4utf16_byte_is_empty(dk4_utf16_byte_decoder_t *ptr) { int back = 0; if (NULL != ptr) { back = dk4utf16_is_empty(&(ptr->dec)); if (0 != ptr->state) { back = 0; } } return back; } int dk4utf16_byte_encode( unsigned char *rb, size_t *pszrb, dk4_c32_t c, int msb, dk4_er_t *erp ) { dk4_c16_t buf[3]; size_t sz; int back = 0; if ((NULL != rb) && (NULL != pszrb)) { if (4 < *pszrb) { sz = DK4_SIZEOF(buf,dk4_c16_t); if (0 != dk4utf16_encode(buf, &sz, c, erp)) { back = 1; if (0 != msb) { rb[0] = (unsigned char)((buf[0] >> 8) & dkC16(0x00FF)); rb[1] = (unsigned char)(buf[0] & dkC16(0x00FF)); } else { rb[1] = (unsigned char)((buf[0] >> 8) & dkC16(0x00FF)); rb[0] = (unsigned char)(buf[0] & dkC16(0x00FF)); } if (1 < sz) { if (0 != msb) { rb[2] = (unsigned char)((buf[1] >> 8) & dkC16(0x00FF)); rb[3] = (unsigned char)(buf[1] & dkC16(0x00FF)); } else { rb[3] = (unsigned char)((buf[1] >> 8) & dkC16(0x00FF)); rb[2] = (unsigned char)(buf[1] & dkC16(0x00FF)); } *pszrb = 4; rb[4] = '\0'; } else { *pszrb = 2; rb[2] = '\0'; } } } else { dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL); } } else { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); } return back; }