1ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* 2ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru********************************************************************** 3b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho* Copyright (C) 2002-2011, International Business Machines 4ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru* Corporation and others. All Rights Reserved. 5ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru********************************************************************** 6ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru* file name: ucnv_u7.c 7ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru* encoding: US-ASCII 8ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru* tab size: 8 (not used) 9ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru* indentation:4 10ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru* 11ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru* created on: 2002jul01 12ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru* created by: Markus W. Scherer 13ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru* 14ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru* UTF-7 converter implementation. Used to be in ucnv_utf.c. 15ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru*/ 16ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 17ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "unicode/utypes.h" 18ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 19ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#if !UCONFIG_NO_CONVERSION 20ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 21ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "unicode/ucnv.h" 22ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "ucnv_bld.h" 23ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#include "ucnv_cnv.h" 24ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 25ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* UTF-7 -------------------------------------------------------------------- */ 26ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 27ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* 28ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * UTF-7 is a stateful encoding of Unicode. 29ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * It is defined in RFC 2152. (http://www.ietf.org/rfc/rfc2152.txt) 30ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * It was intended for use in Internet email systems, using in its bytewise 31ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * encoding only a subset of 7-bit US-ASCII. 32ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * UTF-7 is deprecated in favor of UTF-8/16/32 and SCSU, but still 33ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * occasionally used. 34ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 35ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * For converting Unicode to UTF-7, the RFC allows to encode some US-ASCII 36ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * characters directly or in base64. Especially, the characters in set O 37ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * as defined in the RFC (see below) may be encoded directly but are not 38ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * allowed in, e.g., email headers. 39ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * By default, the ICU UTF-7 converter encodes set O directly. 40ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * By choosing the option "version=1", set O will be escaped instead. 41ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * For example: 42ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * utf7Converter=ucnv_open("UTF-7,version=1"); 43ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 44ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * For details about email headers see RFC 2047. 45ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 46ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 47ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* 48ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Tests for US-ASCII characters belonging to character classes 49ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * defined in UTF-7. 50ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 51ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Set D (directly encoded characters) consists of the following 52ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * characters: the upper and lower case letters A through Z 53ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * and a through z, the 10 digits 0-9, and the following nine special 54ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * characters (note that "+" and "=" are omitted): 55ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * '(),-./:? 56ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 57ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Set O (optional direct characters) consists of the following 58ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * characters (note that "\" and "~" are omitted): 59ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * !"#$%&*;<=>@[]^_`{|} 60ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 61ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * According to the rules in RFC 2152, the byte values for the following 62ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * US-ASCII characters are not used in UTF-7 and are therefore illegal: 63ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - all C0 control codes except for CR LF TAB 64ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - BACKSLASH 65ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - TILDE 66ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - DEL 67ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - all codes beyond US-ASCII, i.e. all >127 68ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 69ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define inSetD(c) \ 70ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ((uint8_t)((c)-97)<26 || (uint8_t)((c)-65)<26 || /* letters */ \ 71ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru (uint8_t)((c)-48)<10 || /* digits */ \ 72ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru (uint8_t)((c)-39)<3 || /* '() */ \ 73ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru (uint8_t)((c)-44)<4 || /* ,-./ */ \ 74ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru (c)==58 || (c)==63 /* :? */ \ 75ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ) 76ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 77ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define inSetO(c) \ 78ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ((uint8_t)((c)-33)<6 || /* !"#$%& */ \ 79ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru (uint8_t)((c)-59)<4 || /* ;<=> */ \ 80ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru (uint8_t)((c)-93)<4 || /* ]^_` */ \ 81ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru (uint8_t)((c)-123)<3 || /* {|} */ \ 82ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru (c)==42 || (c)==64 || (c)==91 /* *@[ */ \ 83ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ) 84ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 85ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define isCRLFTAB(c) ((c)==13 || (c)==10 || (c)==9) 86ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define isCRLFSPTAB(c) ((c)==32 || (c)==13 || (c)==10 || (c)==9) 87ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 88ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define PLUS 43 89ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define MINUS 45 90ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define BACKSLASH 92 91ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define TILDE 126 92ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 93ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* legal byte values: all US-ASCII graphic characters from space to before tilde, and CR LF TAB */ 94ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define isLegalUTF7(c) (((uint8_t)((c)-32)<94 && (c)!=BACKSLASH) || isCRLFTAB(c)) 95ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 96ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* encode directly sets D and O and CR LF SP TAB */ 97ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic const UBool encodeDirectlyMaximum[128]={ 98ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ 99ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 100ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 101ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 102ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 103ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 104ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 105ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 106ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 107ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 108ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 109ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0 110ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 111ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 112ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* encode directly set D and CR LF SP TAB but not set O */ 113ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic const UBool encodeDirectlyRestricted[128]={ 114ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ 115ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 116ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 117ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 118ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 119ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 120ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 121ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 122ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 123ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 124ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 125ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 126ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 127ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 128ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic const uint8_t 129ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QuerutoBase64[64]={ 130ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* A-Z */ 131ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 132ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 133ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* a-z */ 134ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 135ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 136ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* 0-9 */ 137ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 138ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* +/ */ 139ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 43, 47 140ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 141ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 142ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic const int8_t 143ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QuerufromBase64[128]={ 144ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* C0 controls, -1 for legal ones (CR LF TAB), -3 for illegal ones */ 145ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru -3, -3, -3, -3, -3, -3, -3, -3, -3, -1, -1, -3, -3, -1, -3, -3, 146ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, 147ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 148ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* general punctuation with + and / and a special value (-2) for - */ 149ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -2, -1, 63, 150ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* digits */ 151ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, 152ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 153ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* A-Z */ 154ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 155ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -3, -1, -1, -1, 156ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 157ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* a-z */ 158ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 159ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -3, -3 160ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 161ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 162ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* 163ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * converter status values: 164ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 165ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * toUnicodeStatus: 166ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 24 inDirectMode (boolean) 167ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 23..16 base64Counter (-1..7) 168ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 15..0 bits (up to 14 bits incoming base64) 169ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 170ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * fromUnicodeStatus: 171ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 31..28 version (0: set O direct 1: set O escaped) 172ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 24 inDirectMode (boolean) 173ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 23..16 base64Counter (0..2) 174ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 7..0 bits (6 bits outgoing base64) 175ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 176ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 177ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 178ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic void 179ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru_UTF7Reset(UConverter *cnv, UConverterResetChoice choice) { 180ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(choice<=UCNV_RESET_TO_UNICODE) { 181ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* reset toUnicode */ 182ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->toUnicodeStatus=0x1000000; /* inDirectMode=TRUE */ 183ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->toULength=0; 184ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 185ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(choice!=UCNV_RESET_TO_UNICODE) { 186ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* reset fromUnicode */ 187ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->fromUnicodeStatus=(cnv->fromUnicodeStatus&0xf0000000)|0x1000000; /* keep version, inDirectMode=TRUE */ 188ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 189ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru} 190ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 191ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic void 192ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru_UTF7Open(UConverter *cnv, 19385bf2e2fbc60a9f938064abc8127d61da7d19882Claire Ho UConverterLoadArgs *pArgs, 194ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UErrorCode *pErrorCode) { 19585bf2e2fbc60a9f938064abc8127d61da7d19882Claire Ho if(UCNV_GET_VERSION(cnv)<=1) { 19685bf2e2fbc60a9f938064abc8127d61da7d19882Claire Ho /* TODO(markus): Should just use cnv->options rather than copying the version number. */ 19785bf2e2fbc60a9f938064abc8127d61da7d19882Claire Ho cnv->fromUnicodeStatus=UCNV_GET_VERSION(cnv)<<28; 198ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _UTF7Reset(cnv, UCNV_RESET_BOTH); 199ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 200ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR; 201ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 202ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru} 203ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 204ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic void 205ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru_UTF7ToUnicodeWithOffsets(UConverterToUnicodeArgs *pArgs, 206ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UErrorCode *pErrorCode) { 207ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UConverter *cnv; 208ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru const uint8_t *source, *sourceLimit; 209ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UChar *target; 210ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru const UChar *targetLimit; 211ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int32_t *offsets; 212ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 213ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint8_t *bytes; 214ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint8_t byteIndex; 215ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 216ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int32_t length, targetCapacity; 217ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 218ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* UTF-7 state */ 219ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint16_t bits; 220ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int8_t base64Counter; 221ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UBool inDirectMode; 222ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 223ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int8_t base64Value; 224ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 225ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int32_t sourceIndex, nextSourceIndex; 226ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 227ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint8_t b; 228ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* set up the local pointers */ 229ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv=pArgs->converter; 230ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 231ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru source=(const uint8_t *)pArgs->source; 232ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceLimit=(const uint8_t *)pArgs->sourceLimit; 233ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru target=pArgs->target; 234ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru targetLimit=pArgs->targetLimit; 235ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru offsets=pArgs->offsets; 236ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* get the state machine state */ 237ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru { 238ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint32_t status=cnv->toUnicodeStatus; 239ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=(UBool)((status>>24)&1); 240ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=(int8_t)(status>>16); 241ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint16_t)status; 242ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 243ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes=cnv->toUBytes; 244ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=cnv->toULength; 245ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 246ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* sourceIndex=-1 if the current character began in the previous buffer */ 247ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=byteIndex==0 ? 0 : -1; 248ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru nextSourceIndex=0; 249ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 250ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(inDirectMode) { 251ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QuerudirectMode: 252ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* 253ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * In Direct Mode, most US-ASCII characters are encoded directly, i.e., 254ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * with their US-ASCII byte values. 255ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Backslash and Tilde and most control characters are not allowed in UTF-7. 256ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * A plus sign starts Unicode (or "escape") Mode. 257ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 258ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * In Direct Mode, only the sourceIndex is used. 259ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 260ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=0; 261ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru length=(int32_t)(sourceLimit-source); 262ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru targetCapacity=(int32_t)(targetLimit-target); 263ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(length>targetCapacity) { 264ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru length=targetCapacity; 265ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 266ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru while(length>0) { 267ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=*source++; 268ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(!isLegalUTF7(b)) { 269ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* illegal */ 270ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes[0]=b; 271ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=1; 272ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_ILLEGAL_CHAR_FOUND; 273ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 274ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else if(b!=PLUS) { 275ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* write directly encoded character */ 276ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=b; 277ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 278ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 279ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 280ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else /* PLUS */ { 281ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* switch to Unicode mode */ 282ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru nextSourceIndex=++sourceIndex; 283ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=FALSE; 284ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=0; 285ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=0; 286ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=-1; 287ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto unicodeMode; 288ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 289ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru --length; 290ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 291ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(source<sourceLimit && target>=targetLimit) { 292ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* target is full */ 293ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 294ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 295ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 296ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QueruunicodeMode: 297ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* 298ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * In Unicode (or "escape") Mode, UTF-16BE is base64-encoded. 299ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * The base64 sequence ends with any character that is not in the base64 alphabet. 300ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * A terminating minus sign is consumed. 301ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 302ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * In Unicode Mode, the sourceIndex has the index to the start of the current 303ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * base64 bytes, while nextSourceIndex is precisely parallel to source, 304ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * keeping the index to the following byte. 305ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Note that in 2 out of 3 cases, UChars overlap within a base64 byte. 306ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 307ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru while(source<sourceLimit) { 308ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 309ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes[byteIndex++]=b=*source++; 310ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ++nextSourceIndex; 311b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho base64Value = -3; /* initialize as illegal */ 312b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho if(b>=126 || (base64Value=fromBase64[b])==-3 || base64Value==-1) { 313b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho /* either 314b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho * base64Value==-1 for any legal character except base64 and minus sign, or 315b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho * base64Value==-3 for illegal characters: 316b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho * 1. In either case, leave Unicode mode. 317b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho * 2.1. If we ended with an incomplete UChar or none after the +, then 318b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho * generate an error for the preceding erroneous sequence and deal with 319b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho * the current (possibly illegal) character next time through. 320b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho * 2.2. Else the current char comes after a complete UChar, which was already 321b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho * pushed to the output buf, so: 322b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho * 2.2.1. If the current char is legal, just save it for processing next time. 323b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho * It may be for example, a plus which we need to deal with in direct mode. 324b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho * 2.2.2. Else if the current char is illegal, we might as well deal with it here. 325b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho */ 326ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=TRUE; 327b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho if(base64Counter==-1) { 328b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho /* illegal: + immediately followed by something other than base64 or minus sign */ 329b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho /* include the plus sign in the reported sequence, but not the subsequent char */ 330b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho --source; 331b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho bytes[0]=PLUS; 332b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho byteIndex=1; 333b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho *pErrorCode=U_ILLEGAL_CHAR_FOUND; 334b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho break; 335b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } else if(bits!=0) { 336b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho /* bits are illegally left over, a UChar is incomplete */ 337b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho /* don't include current char (legal or illegal) in error seq */ 338b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho --source; 339b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho --byteIndex; 340b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho *pErrorCode=U_ILLEGAL_CHAR_FOUND; 341b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho break; 342b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } else { 343b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho /* previous UChar was complete */ 344b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho if(base64Value==-3) { 345b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho /* current character is illegal, deal with it here */ 346b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho *pErrorCode=U_ILLEGAL_CHAR_FOUND; 347b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho break; 348b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } else { 349b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho /* un-read the current character in case it is a plus sign */ 350b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho --source; 351b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho sourceIndex=nextSourceIndex-1; 352b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho goto directMode; 353b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } 354b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } 355b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } else if(base64Value>=0) { 356ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* collect base64 bytes into UChars */ 357ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru switch(base64Counter) { 358ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case -1: /* -1 is immediately after the + */ 359ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 0: 360ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=base64Value; 361ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=1; 362ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 363ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 1: 364ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 3: 365ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 4: 366ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 6: 367ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint16_t)((bits<<6)|base64Value); 368ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ++base64Counter; 369ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 370ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 2: 371ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=(UChar)((bits<<4)|(base64Value>>2)); 372ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 373ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 374ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=nextSourceIndex-1; 375ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 376ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes[0]=b; /* keep this byte in case an error occurs */ 377ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=1; 378ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint16_t)(base64Value&3); 379ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=3; 380ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 381ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 5: 382ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=(UChar)((bits<<2)|(base64Value>>4)); 383ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 384ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 385ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=nextSourceIndex-1; 386ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 387ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes[0]=b; /* keep this byte in case an error occurs */ 388ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=1; 389ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint16_t)(base64Value&15); 390ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=6; 391ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 392ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 7: 393ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=(UChar)((bits<<6)|base64Value); 394ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 395ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 396ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=nextSourceIndex; 397ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 398ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=0; 399ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=0; 400ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=0; 401ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 402ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru default: 403ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* will never occur */ 404ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 405ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 406b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } else /*base64Value==-2*/ { 407ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* minus sign terminates the base64 sequence */ 408ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=TRUE; 409ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(base64Counter==-1) { 410ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* +- i.e. a minus immediately following a plus */ 411ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=PLUS; 412ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 413ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex-1; 414ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 415ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 416ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* absorb the minus and leave the Unicode Mode */ 417ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(bits!=0) { 418ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* bits are illegally left over, a UChar is incomplete */ 419ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_ILLEGAL_CHAR_FOUND; 420ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 421ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 422ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 423ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=nextSourceIndex; 424ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto directMode; 425ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 426ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 427ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* target is full */ 428ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 429ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 430ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 431ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 432ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 433ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 434ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(U_SUCCESS(*pErrorCode) && pArgs->flush && source==sourceLimit && bits==0) { 435ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* 436ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * if we are in Unicode mode, then the byteIndex might not be 0, 437ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * but that is ok if bits==0 438ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * -> we set byteIndex=0 at the end of the stream to avoid a truncated error 439ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * (not true for IMAP-mailbox-name where we must end in direct mode) 440ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 441ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=0; 442ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 443ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 444ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* set the converter state back into UConverter */ 445ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->toUnicodeStatus=((uint32_t)inDirectMode<<24)|((uint32_t)((uint8_t)base64Counter)<<16)|(uint32_t)bits; 446ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->toULength=byteIndex; 447ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 448ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* write back the updated pointers */ 449ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->source=(const char *)source; 450ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->target=target; 451ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->offsets=offsets; 452ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru return; 453ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru} 454ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 455ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic void 456ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru_UTF7FromUnicodeWithOffsets(UConverterFromUnicodeArgs *pArgs, 457ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UErrorCode *pErrorCode) { 458ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UConverter *cnv; 459ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru const UChar *source, *sourceLimit; 460ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint8_t *target, *targetLimit; 461ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int32_t *offsets; 462ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 463ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int32_t length, targetCapacity, sourceIndex; 464ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UChar c; 465ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 466ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* UTF-7 state */ 467ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru const UBool *encodeDirectly; 468ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint8_t bits; 469ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int8_t base64Counter; 470ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UBool inDirectMode; 471ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 472ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* set up the local pointers */ 473ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv=pArgs->converter; 474ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 475ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* set up the local pointers */ 476ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru source=pArgs->source; 477ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceLimit=pArgs->sourceLimit; 478ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru target=(uint8_t *)pArgs->target; 479ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru targetLimit=(uint8_t *)pArgs->targetLimit; 480ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru offsets=pArgs->offsets; 481ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 482ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* get the state machine state */ 483ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru { 484ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint32_t status=cnv->fromUnicodeStatus; 485ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru encodeDirectly= status<0x10000000 ? encodeDirectlyMaximum : encodeDirectlyRestricted; 486ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=(UBool)((status>>24)&1); 487ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=(int8_t)(status>>16); 488ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint8_t)status; 489ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 490ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 491ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* UTF-7 always encodes UTF-16 code units, therefore we need only a simple sourceIndex */ 492ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=0; 493ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 494ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(inDirectMode) { 495ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QuerudirectMode: 496ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru length=(int32_t)(sourceLimit-source); 497ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru targetCapacity=(int32_t)(targetLimit-target); 498ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(length>targetCapacity) { 499ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru length=targetCapacity; 500ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 501ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru while(length>0) { 502ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru c=*source++; 503ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* currently always encode CR LF SP TAB directly */ 504ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(c<=127 && encodeDirectly[c]) { 505ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* encode directly */ 506ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=(uint8_t)c; 507ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 508ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 509ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 510ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else if(c==PLUS) { 511ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* output +- for + */ 512ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=PLUS; 513ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 514ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=MINUS; 515ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 516ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 517ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 518ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 519ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* realign length and targetCapacity */ 520ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto directMode; 521ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 522ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 523ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 524ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 525ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=MINUS; 526ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=1; 527ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 528ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 529ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 530ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 531ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* un-read this character and switch to Unicode Mode */ 532ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru --source; 533ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=PLUS; 534ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 535ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 536ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 537ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=FALSE; 538ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=0; 539ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto unicodeMode; 540ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 541ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru --length; 542ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 543ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(source<sourceLimit && target>=targetLimit) { 544ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* target is full */ 545ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 546ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 547ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 548ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QueruunicodeMode: 549ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru while(source<sourceLimit) { 550ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 551ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru c=*source++; 552ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(c<=127 && encodeDirectly[c]) { 553ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* encode directly */ 554ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=TRUE; 555ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 556ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* trick: back out this character to make this easier */ 557ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru --source; 558ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 559ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* terminate the base64 sequence */ 560ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(base64Counter!=0) { 561ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* write remaining bits for the previous character */ 562ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=toBase64[bits]; 563ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 564ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex-1; 565ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 566ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 567ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(fromBase64[c]!=-1) { 568ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* need to terminate with a minus */ 569ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 570ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=MINUS; 571ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 572ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex-1; 573ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 574ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 575ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=MINUS; 576ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=1; 577ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 578ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 579ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 580ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 581ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto directMode; 582ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 583ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* 584ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * base64 this character: 585ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Output 2 or 3 base64 bytes for the remaining bits of the previous character 586ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * and the bits of this character, each implicitly in UTF-16BE. 587ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 588ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Here, bits is an 8-bit variable because only 6 bits need to be kept from one 589ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * character to the next. The actual 2 or 4 bits are shifted to the left edge 590ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * of the 6-bits field 5..0 to make the termination of the base64 sequence easier. 591ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 592ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru switch(base64Counter) { 593ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 0: 594ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=toBase64[c>>10]; 595ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 596ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=toBase64[(c>>4)&0x3f]; 597ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 598ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 599ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 600ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 601ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 602ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 603ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 604ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 605ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=toBase64[(c>>4)&0x3f]; 606ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=1; 607ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 608ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 609ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint8_t)((c&15)<<2); 610ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=1; 611ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 612ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 1: 613ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=toBase64[bits|(c>>14)]; 614ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 615ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=toBase64[(c>>8)&0x3f]; 616ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 617ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=toBase64[(c>>2)&0x3f]; 618ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 619ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 620ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 621ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 622ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 623ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 624ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 625ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 626ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 627ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 628ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=toBase64[(c>>2)&0x3f]; 629ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=1; 630ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 631ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 632ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 633ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 634ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 635ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 636ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=toBase64[(c>>8)&0x3f]; 637ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[1]=toBase64[(c>>2)&0x3f]; 638ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=2; 639ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 640ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 641ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint8_t)((c&3)<<4); 642ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=2; 643ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 644ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 2: 645ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=toBase64[bits|(c>>12)]; 646ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 647ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=toBase64[(c>>6)&0x3f]; 648ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 649ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=toBase64[c&0x3f]; 650ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 651ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 652ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 653ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 654ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 655ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 656ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 657ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 658ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 659ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 660ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=toBase64[c&0x3f]; 661ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=1; 662ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 663ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 664ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 665ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 666ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 667ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 668ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=toBase64[(c>>6)&0x3f]; 669ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[1]=toBase64[c&0x3f]; 670ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=2; 671ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 672ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 673ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=0; 674ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=0; 675ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 676ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru default: 677ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* will never occur */ 678ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 679ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 680ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 681ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 682ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* target is full */ 683ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 684ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 685ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 686ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 687ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 688ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 689ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(pArgs->flush && source>=sourceLimit) { 690ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* flush remaining bits to the target */ 691b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho if(!inDirectMode) { 692b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho if (base64Counter!=0) { 693b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho if(target<targetLimit) { 694b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho *target++=toBase64[bits]; 695b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho if(offsets!=NULL) { 696b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho *offsets++=sourceIndex-1; 697b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } 698b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } else { 699b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho cnv->charErrorBuffer[cnv->charErrorBufferLength++]=toBase64[bits]; 700b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 701b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } 702b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } 703b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho /* Add final MINUS to terminate unicodeMode */ 704ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 705b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho *target++=MINUS; 706ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 707ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex-1; 708ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 709ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 710b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho cnv->charErrorBuffer[cnv->charErrorBufferLength++]=MINUS; 711ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 712ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 713ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 714ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* reset the state for the next conversion */ 715ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->fromUnicodeStatus=(cnv->fromUnicodeStatus&0xf0000000)|0x1000000; /* keep version, inDirectMode=TRUE */ 716ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 717ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* set the converter state back into UConverter */ 718ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->fromUnicodeStatus= 719ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru (cnv->fromUnicodeStatus&0xf0000000)| /* keep version*/ 720ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ((uint32_t)inDirectMode<<24)|((uint32_t)base64Counter<<16)|(uint32_t)bits; 721ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 722ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 723ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* write back the updated pointers */ 724ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->source=source; 725ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->target=(char *)target; 726ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->offsets=offsets; 727ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru return; 728ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru} 729ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 730ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic const char * 731ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru_UTF7GetName(const UConverter *cnv) { 732ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru switch(cnv->fromUnicodeStatus>>28) { 733ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 1: 734ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru return "UTF-7,version=1"; 735ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru default: 736ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru return "UTF-7"; 737ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 738ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru} 739ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 740ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic const UConverterImpl _UTF7Impl={ 741ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UCNV_UTF7, 742ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 743ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 744ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 745ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 746ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _UTF7Open, 747ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 748ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _UTF7Reset, 749ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 750ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _UTF7ToUnicodeWithOffsets, 751ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _UTF7ToUnicodeWithOffsets, 752ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _UTF7FromUnicodeWithOffsets, 753ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _UTF7FromUnicodeWithOffsets, 754ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 755ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 756ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 757ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _UTF7GetName, 758ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, /* we don't need writeSub() because we never call a callback at fromUnicode() */ 759ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 760ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ucnv_getCompleteUnicodeSet 761ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 762ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 763ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic const UConverterStaticData _UTF7StaticData={ 764ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sizeof(UConverterStaticData), 765ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru "UTF-7", 766ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, /* TODO CCSID for UTF-7 */ 767ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UCNV_IBM, UCNV_UTF7, 768ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 4, 769ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru { 0x3f, 0, 0, 0 }, 1, /* the subchar is not used */ 770ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru FALSE, FALSE, 771ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, 772ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, 773ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } /* reserved */ 774ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 775ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 776ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queruconst UConverterSharedData _UTF7Data={ 777ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sizeof(UConverterSharedData), ~((uint32_t)0), 778ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, NULL, &_UTF7StaticData, FALSE, &_UTF7Impl, 779ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0 780ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 781ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 782ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* IMAP mailbox name encoding ----------------------------------------------- */ 783ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 784ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* 785ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * RFC 2060: INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1 786ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * http://www.ietf.org/rfc/rfc2060.txt 787ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 788ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 5.1.3. Mailbox International Naming Convention 789ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 790ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * By convention, international mailbox names are specified using a 791ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * modified version of the UTF-7 encoding described in [UTF-7]. The 792ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * purpose of these modifications is to correct the following problems 793ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * with UTF-7: 794ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 795ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 1) UTF-7 uses the "+" character for shifting; this conflicts with 796ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * the common use of "+" in mailbox names, in particular USENET 797ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * newsgroup names. 798ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 799ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 2) UTF-7's encoding is BASE64 which uses the "/" character; this 800ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * conflicts with the use of "/" as a popular hierarchy delimiter. 801ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 802ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 3) UTF-7 prohibits the unencoded usage of "\"; this conflicts with 803ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * the use of "\" as a popular hierarchy delimiter. 804ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 805ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 4) UTF-7 prohibits the unencoded usage of "~"; this conflicts with 806ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * the use of "~" in some servers as a home directory indicator. 807ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 808ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 5) UTF-7 permits multiple alternate forms to represent the same 809ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * string; in particular, printable US-ASCII chararacters can be 810ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * represented in encoded form. 811ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 812ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * In modified UTF-7, printable US-ASCII characters except for "&" 813ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * represent themselves; that is, characters with octet values 0x20-0x25 814ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * and 0x27-0x7e. The character "&" (0x26) is represented by the two- 815ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * octet sequence "&-". 816ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 817ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * All other characters (octet values 0x00-0x1f, 0x7f-0xff, and all 818ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Unicode 16-bit octets) are represented in modified BASE64, with a 819ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * further modification from [UTF-7] that "," is used instead of "/". 820ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Modified BASE64 MUST NOT be used to represent any printing US-ASCII 821ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * character which can represent itself. 822ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 823ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * "&" is used to shift to modified BASE64 and "-" to shift back to US- 824ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * ASCII. All names start in US-ASCII, and MUST end in US-ASCII (that 825ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * is, a name that ends with a Unicode 16-bit octet MUST end with a "- 826ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * "). 827ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 828ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * For example, here is a mailbox name which mixes English, Japanese, 829ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * and Chinese text: ~peter/mail/&ZeVnLIqe-/&U,BTFw- 830ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 831ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 832ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* 833ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Tests for US-ASCII characters belonging to character classes 834ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * defined in UTF-7. 835ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 836ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Set D (directly encoded characters) consists of the following 837ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * characters: the upper and lower case letters A through Z 838ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * and a through z, the 10 digits 0-9, and the following nine special 839ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * characters (note that "+" and "=" are omitted): 840ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * '(),-./:? 841ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 842ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Set O (optional direct characters) consists of the following 843ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * characters (note that "\" and "~" are omitted): 844ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * !"#$%&*;<=>@[]^_`{|} 845ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 846ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * According to the rules in RFC 2152, the byte values for the following 847ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * US-ASCII characters are not used in UTF-7 and are therefore illegal: 848ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - all C0 control codes except for CR LF TAB 849ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - BACKSLASH 850ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - TILDE 851ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - DEL 852ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - all codes beyond US-ASCII, i.e. all >127 853ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 854ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 855ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* uses '&' not '+' to start a base64 sequence */ 856ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define AMPERSAND 0x26 857ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define COMMA 0x2c 858ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define SLASH 0x2f 859ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 860ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* legal byte values: all US-ASCII graphic characters 0x20..0x7e */ 861ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define isLegalIMAP(c) (0x20<=(c) && (c)<=0x7e) 862ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 863ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* direct-encode all of printable ASCII 0x20..0x7e except '&' 0x26 */ 864ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define inSetDIMAP(c) (isLegalIMAP(c) && c!=AMPERSAND) 865ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 866ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define TO_BASE64_IMAP(n) ((n)<63 ? toBase64[n] : COMMA) 867ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define FROM_BASE64_IMAP(c) ((c)==COMMA ? 63 : (c)==SLASH ? -1 : fromBase64[c]) 868ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 869ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* 870ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * converter status values: 871ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 872ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * toUnicodeStatus: 873ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 24 inDirectMode (boolean) 874ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 23..16 base64Counter (-1..7) 875ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 15..0 bits (up to 14 bits incoming base64) 876ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 877ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * fromUnicodeStatus: 878ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 24 inDirectMode (boolean) 879ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 23..16 base64Counter (0..2) 880ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 7..0 bits (6 bits outgoing base64) 881ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 882ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * ignore bits 31..25 883ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 884ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 885ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic void 886ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru_IMAPToUnicodeWithOffsets(UConverterToUnicodeArgs *pArgs, 887ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UErrorCode *pErrorCode) { 888ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UConverter *cnv; 889ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru const uint8_t *source, *sourceLimit; 890ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UChar *target; 891ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru const UChar *targetLimit; 892ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int32_t *offsets; 893ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 894ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint8_t *bytes; 895ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint8_t byteIndex; 896ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 897ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int32_t length, targetCapacity; 898ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 899ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* UTF-7 state */ 900ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint16_t bits; 901ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int8_t base64Counter; 902ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UBool inDirectMode; 903ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 904ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int8_t base64Value; 905ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 906ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int32_t sourceIndex, nextSourceIndex; 907ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 908ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UChar c; 909ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint8_t b; 910ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 911ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* set up the local pointers */ 912ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv=pArgs->converter; 913ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 914ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru source=(const uint8_t *)pArgs->source; 915ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceLimit=(const uint8_t *)pArgs->sourceLimit; 916ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru target=pArgs->target; 917ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru targetLimit=pArgs->targetLimit; 918ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru offsets=pArgs->offsets; 919ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* get the state machine state */ 920ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru { 921ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint32_t status=cnv->toUnicodeStatus; 922ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=(UBool)((status>>24)&1); 923ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=(int8_t)(status>>16); 924ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint16_t)status; 925ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 926ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes=cnv->toUBytes; 927ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=cnv->toULength; 928ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 929ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* sourceIndex=-1 if the current character began in the previous buffer */ 930ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=byteIndex==0 ? 0 : -1; 931ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru nextSourceIndex=0; 932ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 933ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(inDirectMode) { 934ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QuerudirectMode: 935ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* 936ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * In Direct Mode, US-ASCII characters are encoded directly, i.e., 937ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * with their US-ASCII byte values. 938ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * An ampersand starts Unicode (or "escape") Mode. 939ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 940ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * In Direct Mode, only the sourceIndex is used. 941ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 942ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=0; 943ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru length=(int32_t)(sourceLimit-source); 944ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru targetCapacity=(int32_t)(targetLimit-target); 945ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(length>targetCapacity) { 946ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru length=targetCapacity; 947ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 948ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru while(length>0) { 949ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=*source++; 950ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(!isLegalIMAP(b)) { 951ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* illegal */ 952ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes[0]=b; 953ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=1; 954ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_ILLEGAL_CHAR_FOUND; 955ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 956ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else if(b!=AMPERSAND) { 957ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* write directly encoded character */ 958ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=b; 959ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 960ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 961ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 962ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else /* AMPERSAND */ { 963ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* switch to Unicode mode */ 964ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru nextSourceIndex=++sourceIndex; 965ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=FALSE; 966ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=0; 967ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=0; 968ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=-1; 969ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto unicodeMode; 970ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 971ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru --length; 972ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 973ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(source<sourceLimit && target>=targetLimit) { 974ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* target is full */ 975ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 976ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 977ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 978ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QueruunicodeMode: 979ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* 980ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * In Unicode (or "escape") Mode, UTF-16BE is base64-encoded. 981ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * The base64 sequence ends with any character that is not in the base64 alphabet. 982ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * A terminating minus sign is consumed. 983ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * US-ASCII must not be base64-ed. 984ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 985ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * In Unicode Mode, the sourceIndex has the index to the start of the current 986ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * base64 bytes, while nextSourceIndex is precisely parallel to source, 987ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * keeping the index to the following byte. 988ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Note that in 2 out of 3 cases, UChars overlap within a base64 byte. 989ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 990ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru while(source<sourceLimit) { 991ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 992ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes[byteIndex++]=b=*source++; 993ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ++nextSourceIndex; 994ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(b>0x7e) { 995ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* illegal - test other illegal US-ASCII values by base64Value==-3 */ 996ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=TRUE; 997ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_ILLEGAL_CHAR_FOUND; 998ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 999ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else if((base64Value=FROM_BASE64_IMAP(b))>=0) { 1000ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* collect base64 bytes into UChars */ 1001ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru switch(base64Counter) { 1002ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case -1: /* -1 is immediately after the & */ 1003ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 0: 1004ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=base64Value; 1005ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=1; 1006ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1007ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 1: 1008ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 3: 1009ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 4: 1010ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 6: 1011ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint16_t)((bits<<6)|base64Value); 1012ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ++base64Counter; 1013ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1014ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 2: 1015ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru c=(UChar)((bits<<4)|(base64Value>>2)); 1016ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(isLegalIMAP(c)) { 1017ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* illegal */ 1018ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=TRUE; 1019ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_ILLEGAL_CHAR_FOUND; 1020ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto endloop; 1021ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1022ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=c; 1023ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1024ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1025ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=nextSourceIndex-1; 1026ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1027ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes[0]=b; /* keep this byte in case an error occurs */ 1028ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=1; 1029ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint16_t)(base64Value&3); 1030ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=3; 1031ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1032ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 5: 1033ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru c=(UChar)((bits<<2)|(base64Value>>4)); 1034ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(isLegalIMAP(c)) { 1035ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* illegal */ 1036ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=TRUE; 1037ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_ILLEGAL_CHAR_FOUND; 1038ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto endloop; 1039ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1040ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=c; 1041ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1042ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1043ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=nextSourceIndex-1; 1044ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1045ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes[0]=b; /* keep this byte in case an error occurs */ 1046ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=1; 1047ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint16_t)(base64Value&15); 1048ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=6; 1049ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1050ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 7: 1051ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru c=(UChar)((bits<<6)|base64Value); 1052ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(isLegalIMAP(c)) { 1053ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* illegal */ 1054ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=TRUE; 1055ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_ILLEGAL_CHAR_FOUND; 1056ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto endloop; 1057ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1058ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=c; 1059ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1060ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1061ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=nextSourceIndex; 1062ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1063ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=0; 1064ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=0; 1065ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=0; 1066ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1067ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru default: 1068ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* will never occur */ 1069ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1070ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1071ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else if(base64Value==-2) { 1072ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* minus sign terminates the base64 sequence */ 1073ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=TRUE; 1074ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(base64Counter==-1) { 1075ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* &- i.e. a minus immediately following an ampersand */ 1076ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=AMPERSAND; 1077ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1078ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex-1; 1079ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1080ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1081ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* absorb the minus and leave the Unicode Mode */ 1082ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(bits!=0 || (base64Counter!=0 && base64Counter!=3 && base64Counter!=6)) { 1083ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* bits are illegally left over, a UChar is incomplete */ 1084ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* base64Counter other than 0, 3, 6 means non-minimal zero-padding, also illegal */ 1085ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_ILLEGAL_CHAR_FOUND; 1086ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1087ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1088ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1089ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=nextSourceIndex; 1090ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto directMode; 1091ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1092ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(base64Counter==-1) { 1093ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* illegal: & immediately followed by something other than base64 or minus sign */ 1094ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* include the ampersand in the reported sequence */ 1095ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru --sourceIndex; 1096ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes[0]=AMPERSAND; 1097ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes[1]=b; 1098ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=2; 1099ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1100ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* base64Value==-1 for characters that are illegal only in Unicode mode */ 1101ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* base64Value==-3 for illegal characters */ 1102ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* illegal */ 1103ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=TRUE; 1104ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_ILLEGAL_CHAR_FOUND; 1105ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1106ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1107ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1108ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* target is full */ 1109ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1110ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1111ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1112ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1113ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1114ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queruendloop: 1115ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1116ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* 1117ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * the end of the input stream and detection of truncated input 1118ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * are handled by the framework, but here we must check if we are in Unicode 1119ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * mode and byteIndex==0 because we must end in direct mode 1120ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 1121ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * conditions: 1122ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * successful 1123ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * in Unicode mode and byteIndex==0 1124ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * end of input and no truncated input 1125ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 1126ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if( U_SUCCESS(*pErrorCode) && 1127ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru !inDirectMode && byteIndex==0 && 1128ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->flush && source>=sourceLimit 1129ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ) { 1130ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(base64Counter==-1) { 1131ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* & at the very end of the input */ 1132ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* make the ampersand the reported sequence */ 1133ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes[0]=AMPERSAND; 1134ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=1; 1135ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1136ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* else if(base64Counter!=-1) byteIndex remains 0 because there is no particular byte sequence */ 1137ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1138ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=TRUE; /* avoid looping */ 1139ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_TRUNCATED_CHAR_FOUND; 1140ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1141ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1142ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* set the converter state back into UConverter */ 1143ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->toUnicodeStatus=((uint32_t)inDirectMode<<24)|((uint32_t)((uint8_t)base64Counter)<<16)|(uint32_t)bits; 1144ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->toULength=byteIndex; 1145ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1146ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* write back the updated pointers */ 1147ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->source=(const char *)source; 1148ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->target=target; 1149ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->offsets=offsets; 1150ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru return; 1151ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru} 1152ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1153ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic void 1154ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru_IMAPFromUnicodeWithOffsets(UConverterFromUnicodeArgs *pArgs, 1155ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UErrorCode *pErrorCode) { 1156ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UConverter *cnv; 1157ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru const UChar *source, *sourceLimit; 1158ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint8_t *target, *targetLimit; 1159ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int32_t *offsets; 1160ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1161ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int32_t length, targetCapacity, sourceIndex; 1162ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UChar c; 1163ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint8_t b; 1164ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1165ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* UTF-7 state */ 1166ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint8_t bits; 1167ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int8_t base64Counter; 1168ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UBool inDirectMode; 1169ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1170ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* set up the local pointers */ 1171ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv=pArgs->converter; 1172ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1173ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* set up the local pointers */ 1174ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru source=pArgs->source; 1175ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceLimit=pArgs->sourceLimit; 1176ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru target=(uint8_t *)pArgs->target; 1177ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru targetLimit=(uint8_t *)pArgs->targetLimit; 1178ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru offsets=pArgs->offsets; 1179ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1180ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* get the state machine state */ 1181ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru { 1182ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint32_t status=cnv->fromUnicodeStatus; 1183ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=(UBool)((status>>24)&1); 1184ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=(int8_t)(status>>16); 1185ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint8_t)status; 1186ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1187ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1188ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* UTF-7 always encodes UTF-16 code units, therefore we need only a simple sourceIndex */ 1189ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=0; 1190ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1191ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(inDirectMode) { 1192ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QuerudirectMode: 1193ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru length=(int32_t)(sourceLimit-source); 1194ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru targetCapacity=(int32_t)(targetLimit-target); 1195ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(length>targetCapacity) { 1196ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru length=targetCapacity; 1197ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1198ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru while(length>0) { 1199ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru c=*source++; 1200ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* encode 0x20..0x7e except '&' directly */ 1201ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(inSetDIMAP(c)) { 1202ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* encode directly */ 1203ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=(uint8_t)c; 1204ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1205ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 1206ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1207ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else if(c==AMPERSAND) { 1208ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* output &- for & */ 1209ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=AMPERSAND; 1210ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 1211ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=MINUS; 1212ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1213ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1214ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 1215ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1216ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* realign length and targetCapacity */ 1217ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto directMode; 1218ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1219ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1220ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 1221ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1222ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=MINUS; 1223ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=1; 1224ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1225ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1226ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1227ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1228ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* un-read this character and switch to Unicode Mode */ 1229ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru --source; 1230ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=AMPERSAND; 1231ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1232ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1233ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1234ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=FALSE; 1235ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=0; 1236ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto unicodeMode; 1237ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1238ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru --length; 1239ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1240ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(source<sourceLimit && target>=targetLimit) { 1241ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* target is full */ 1242ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1243ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1244ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1245ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QueruunicodeMode: 1246ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru while(source<sourceLimit) { 1247ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 1248ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru c=*source++; 1249ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(isLegalIMAP(c)) { 1250ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* encode directly */ 1251ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=TRUE; 1252ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1253ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* trick: back out this character to make this easier */ 1254ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru --source; 1255ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1256ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* terminate the base64 sequence */ 1257ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(base64Counter!=0) { 1258ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* write remaining bits for the previous character */ 1259ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=TO_BASE64_IMAP(bits); 1260ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1261ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex-1; 1262ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1263ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1264ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* need to terminate with a minus */ 1265ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 1266ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=MINUS; 1267ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1268ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex-1; 1269ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1270ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1271ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=MINUS; 1272ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=1; 1273ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1274ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1275ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1276ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto directMode; 1277ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1278ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* 1279ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * base64 this character: 1280ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Output 2 or 3 base64 bytes for the remaining bits of the previous character 1281ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * and the bits of this character, each implicitly in UTF-16BE. 1282ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 1283ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Here, bits is an 8-bit variable because only 6 bits need to be kept from one 1284ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * character to the next. The actual 2 or 4 bits are shifted to the left edge 1285ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * of the 6-bits field 5..0 to make the termination of the base64 sequence easier. 1286ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 1287ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru switch(base64Counter) { 1288ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 0: 1289ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)(c>>10); 1290ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=TO_BASE64_IMAP(b); 1291ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 1292ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)((c>>4)&0x3f); 1293ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=TO_BASE64_IMAP(b); 1294ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1295ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1296ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 1297ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1298ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1299ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1300ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 1301ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1302ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)((c>>4)&0x3f); 1303ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=TO_BASE64_IMAP(b); 1304ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=1; 1305ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1306ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1307ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint8_t)((c&15)<<2); 1308ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=1; 1309ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1310ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 1: 1311ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)(bits|(c>>14)); 1312ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=TO_BASE64_IMAP(b); 1313ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 1314ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)((c>>8)&0x3f); 1315ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=TO_BASE64_IMAP(b); 1316ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 1317ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)((c>>2)&0x3f); 1318ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=TO_BASE64_IMAP(b); 1319ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1320ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1321ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1322ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 1323ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1324ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1325ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1326ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1327ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 1328ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1329ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)((c>>2)&0x3f); 1330ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=TO_BASE64_IMAP(b); 1331ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=1; 1332ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1333ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1334ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1335ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1336ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 1337ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1338ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)((c>>8)&0x3f); 1339ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=TO_BASE64_IMAP(b); 1340ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)((c>>2)&0x3f); 1341ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[1]=TO_BASE64_IMAP(b); 1342ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=2; 1343ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1344ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1345ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint8_t)((c&3)<<4); 1346ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=2; 1347ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1348ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 2: 1349ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)(bits|(c>>12)); 1350ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=TO_BASE64_IMAP(b); 1351ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 1352ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)((c>>6)&0x3f); 1353ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=TO_BASE64_IMAP(b); 1354ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 1355ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)(c&0x3f); 1356ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=TO_BASE64_IMAP(b); 1357ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1358ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1359ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1360ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 1361ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1362ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1363ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1364ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1365ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 1366ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1367ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)(c&0x3f); 1368ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=TO_BASE64_IMAP(b); 1369ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=1; 1370ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1371ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1372ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1373ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1374ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 1375ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1376ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)((c>>6)&0x3f); 1377ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=TO_BASE64_IMAP(b); 1378ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)(c&0x3f); 1379ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[1]=TO_BASE64_IMAP(b); 1380ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=2; 1381ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1382ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1383ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=0; 1384ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=0; 1385ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1386ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru default: 1387ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* will never occur */ 1388ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1389ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1390ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1391ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1392ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* target is full */ 1393ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1394ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1395ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1396ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1397ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1398ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1399ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(pArgs->flush && source>=sourceLimit) { 1400ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* flush remaining bits to the target */ 1401ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(!inDirectMode) { 1402ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(base64Counter!=0) { 1403ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 1404ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=TO_BASE64_IMAP(bits); 1405ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1406ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex-1; 1407ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1408ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1409ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[cnv->charErrorBufferLength++]=TO_BASE64_IMAP(bits); 1410ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1411ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1412ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1413ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* need to terminate with a minus */ 1414ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 1415ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=MINUS; 1416ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1417ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex-1; 1418ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1419ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1420ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[cnv->charErrorBufferLength++]=MINUS; 1421ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1422ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1423ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1424ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* reset the state for the next conversion */ 1425ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->fromUnicodeStatus=(cnv->fromUnicodeStatus&0xf0000000)|0x1000000; /* keep version, inDirectMode=TRUE */ 1426ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1427ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* set the converter state back into UConverter */ 1428ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->fromUnicodeStatus= 1429ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru (cnv->fromUnicodeStatus&0xf0000000)| /* keep version*/ 1430ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ((uint32_t)inDirectMode<<24)|((uint32_t)base64Counter<<16)|(uint32_t)bits; 1431ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1432ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1433ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* write back the updated pointers */ 1434ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->source=source; 1435ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->target=(char *)target; 1436ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->offsets=offsets; 1437ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru return; 1438ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru} 1439ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1440ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic const UConverterImpl _IMAPImpl={ 1441ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UCNV_IMAP_MAILBOX, 1442ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1443ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 1444ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 1445ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1446ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _UTF7Open, 1447ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 1448ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _UTF7Reset, 1449ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1450ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _IMAPToUnicodeWithOffsets, 1451ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _IMAPToUnicodeWithOffsets, 1452ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _IMAPFromUnicodeWithOffsets, 1453ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _IMAPFromUnicodeWithOffsets, 1454ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 1455ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1456ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 1457ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 1458ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, /* we don't need writeSub() because we never call a callback at fromUnicode() */ 1459ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 1460ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ucnv_getCompleteUnicodeSet 1461ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 1462ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1463ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic const UConverterStaticData _IMAPStaticData={ 1464ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sizeof(UConverterStaticData), 1465ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru "IMAP-mailbox-name", 1466ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, /* TODO CCSID for IMAP-mailbox-name */ 1467ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UCNV_IBM, UCNV_IMAP_MAILBOX, 1468ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 4, 1469ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru { 0x3f, 0, 0, 0 }, 1, /* the subchar is not used */ 1470ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru FALSE, FALSE, 1471ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, 1472ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, 1473ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } /* reserved */ 1474ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 1475ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1476ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queruconst UConverterSharedData _IMAPData={ 1477ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sizeof(UConverterSharedData), ~((uint32_t)0), 1478ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, NULL, &_IMAPStaticData, FALSE, &_IMAPImpl, 1479ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0 1480ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 1481ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1482ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#endif 1483