1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright (c) 1997, by Sun Microsystems, Inc. 23 * All rights reserved. 24 */ 25 26 27 /* 28 Header file for converting iso2022-CN-EXT to cns11643 and big5 29 */ 30 31 #include <stdio.h> 32 #include <stdlib.h> 33 #include <errno.h> 34 35 #define MSB 0x80 /* Most significant bit */ 36 #define MBYTE 0x8e /* multi-byte (4 byte character) */ 37 #define PMASK 0xa0 /* plane number mask */ 38 #define ONEBYTE 0xff /* The right most byte */ 39 40 #define SI 0x0f /* shift in */ 41 #define SO 0x0e /* shift out */ 42 #define ESC 0x1b /* escape */ 43 44 #define SS2LOW 0x4e /* SS2 escape sequence low byte */ 45 #define SS3LOW 0x4f /* SS3 escape sequence low byte */ 46 47 #define NON_ID_CHAR '_' /* non-identified character */ 48 49 typedef struct _icv_state { 50 char Sfunc; /* Current shift function SI or SO. Also the current 51 state of the ISO state machine */ 52 short SSfunc; /* Current single shift function NONE, SS2, SS3 */ 53 short ESCstate; /* State of the ESC seq processing sub-machine. State 54 can be OFF, E0, E1, E2, E3, E4 */ 55 int firstbyte; /* False if waiting for second Chinese byte */ 56 char keepc[2]; /* For the 2-byte Chinese character code */ 57 char savbuf[4]; /* Save Esc seq here in the ESC seq processing 58 sub-machine. If illegal ESC seq and if 59 insufficient space to output it, these are processed 60 before any byte from the inbuf when _icv_iconv is 61 called again with more output space. In state SO an 62 illegal ESC sequence causes _icv_iconv() 63 to return with EILSEQ error. See processESCseq() 64 to know what is an illegal ESC sequence. */ 65 int numsav; /* The number of bytes saved in savbuf */ 66 char SOcharset; /* The current SO designation */ 67 char SS2charset; /* The current SS2 designation */ 68 char SS3charset; /* The current SS3 designation */ 69 size_t nonidcount; /* Keeps track of skipped input bytes in convertion */ 70 int _errno; /* Internal error number */ 71 } _iconv_st; 72 73 enum _ssfunc { NONE, SS2, SS3 }; 74 enum _escstate { OFF, E0, E1, E2, E3, E4 }; 75 enum _retProcESC { NEEDMORE, DONE, INVALID }; 76 enum _truefalse { True, False }; 77 78 void* iso2022_icv_open(); 79 void iso2022_icv_close(_iconv_st*); 80 size_t iso2022_icv_iconv(_iconv_st*, char**, size_t*, unsigned char**, size_t*, int (*)(_iconv_st*, unsigned char**, size_t*, int)); 81