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" 2483a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius#include "uassert.h" 25ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 26ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* UTF-7 -------------------------------------------------------------------- */ 27ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 28ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* 29ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * UTF-7 is a stateful encoding of Unicode. 30ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * It is defined in RFC 2152. (http://www.ietf.org/rfc/rfc2152.txt) 31ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * It was intended for use in Internet email systems, using in its bytewise 32ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * encoding only a subset of 7-bit US-ASCII. 33ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * UTF-7 is deprecated in favor of UTF-8/16/32 and SCSU, but still 34ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * occasionally used. 35ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 36ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * For converting Unicode to UTF-7, the RFC allows to encode some US-ASCII 37ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * characters directly or in base64. Especially, the characters in set O 38ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * as defined in the RFC (see below) may be encoded directly but are not 39ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * allowed in, e.g., email headers. 40ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * By default, the ICU UTF-7 converter encodes set O directly. 41ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * By choosing the option "version=1", set O will be escaped instead. 42ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * For example: 43ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * utf7Converter=ucnv_open("UTF-7,version=1"); 44ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 45ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * For details about email headers see RFC 2047. 46ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 47ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 48ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* 49ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Tests for US-ASCII characters belonging to character classes 50ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * defined in UTF-7. 51ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 52ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Set D (directly encoded characters) consists of the following 53ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * characters: the upper and lower case letters A through Z 54ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * and a through z, the 10 digits 0-9, and the following nine special 55ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * characters (note that "+" and "=" are omitted): 56ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * '(),-./:? 57ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 58ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Set O (optional direct characters) consists of the following 59ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * characters (note that "\" and "~" are omitted): 60ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * !"#$%&*;<=>@[]^_`{|} 61ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 62ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * According to the rules in RFC 2152, the byte values for the following 63ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * US-ASCII characters are not used in UTF-7 and are therefore illegal: 64ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - all C0 control codes except for CR LF TAB 65ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - BACKSLASH 66ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - TILDE 67ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - DEL 68ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - all codes beyond US-ASCII, i.e. all >127 69ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 70ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define inSetD(c) \ 71ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ((uint8_t)((c)-97)<26 || (uint8_t)((c)-65)<26 || /* letters */ \ 72ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru (uint8_t)((c)-48)<10 || /* digits */ \ 73ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru (uint8_t)((c)-39)<3 || /* '() */ \ 74ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru (uint8_t)((c)-44)<4 || /* ,-./ */ \ 75ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru (c)==58 || (c)==63 /* :? */ \ 76ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ) 77ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 78ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define inSetO(c) \ 79ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ((uint8_t)((c)-33)<6 || /* !"#$%& */ \ 80ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru (uint8_t)((c)-59)<4 || /* ;<=> */ \ 81ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru (uint8_t)((c)-93)<4 || /* ]^_` */ \ 82ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru (uint8_t)((c)-123)<3 || /* {|} */ \ 83ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru (c)==42 || (c)==64 || (c)==91 /* *@[ */ \ 84ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ) 85ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 86ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define isCRLFTAB(c) ((c)==13 || (c)==10 || (c)==9) 87ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define isCRLFSPTAB(c) ((c)==32 || (c)==13 || (c)==10 || (c)==9) 88ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 89ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define PLUS 43 90ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define MINUS 45 91ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define BACKSLASH 92 92ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define TILDE 126 93ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 94ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* legal byte values: all US-ASCII graphic characters from space to before tilde, and CR LF TAB */ 95ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define isLegalUTF7(c) (((uint8_t)((c)-32)<94 && (c)!=BACKSLASH) || isCRLFTAB(c)) 96ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 97ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* encode directly sets D and O and CR LF SP TAB */ 98ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic const UBool encodeDirectlyMaximum[128]={ 99ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ 100ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 101ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 102ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 103ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 104ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 105ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 106ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 107ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 108ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 109ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 110ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0 111ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 112ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 113ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* encode directly set D and CR LF SP TAB but not set O */ 114ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic const UBool encodeDirectlyRestricted[128]={ 115ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* 0 1 2 3 4 5 6 7 8 9 a b c d e f */ 116ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0, 0, 117ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 118ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 119ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 1, 1, 1, 1, 120ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 121ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 122ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 123ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 124ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 125ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 126ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 127ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 128ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 129ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic const uint8_t 130ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QuerutoBase64[64]={ 131ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* A-Z */ 132ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 133ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 134ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* a-z */ 135ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 136ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 137ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* 0-9 */ 138ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 139ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* +/ */ 140ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 43, 47 141ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 142ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 143ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic const int8_t 144ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QuerufromBase64[128]={ 145ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* C0 controls, -1 for legal ones (CR LF TAB), -3 for illegal ones */ 146ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru -3, -3, -3, -3, -3, -3, -3, -3, -3, -1, -1, -3, -3, -1, -3, -3, 147ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, -3, 148ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 149ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* general punctuation with + and / and a special value (-2) for - */ 150ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -2, -1, 63, 151ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* digits */ 152ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, 153ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 154ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* A-Z */ 155ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 156ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -3, -1, -1, -1, 157ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 158ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* a-z */ 159ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 160ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -3, -3 161ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 162ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 163ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* 164ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * converter status values: 165ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 166ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * toUnicodeStatus: 167ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 24 inDirectMode (boolean) 168ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 23..16 base64Counter (-1..7) 169ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 15..0 bits (up to 14 bits incoming base64) 170ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 171ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * fromUnicodeStatus: 172ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 31..28 version (0: set O direct 1: set O escaped) 173ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 24 inDirectMode (boolean) 174ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 23..16 base64Counter (0..2) 175ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 7..0 bits (6 bits outgoing base64) 176ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 177ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 178ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 179ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic void 180ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru_UTF7Reset(UConverter *cnv, UConverterResetChoice choice) { 181ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(choice<=UCNV_RESET_TO_UNICODE) { 182ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* reset toUnicode */ 183ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->toUnicodeStatus=0x1000000; /* inDirectMode=TRUE */ 184ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->toULength=0; 185ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 186ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(choice!=UCNV_RESET_TO_UNICODE) { 187ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* reset fromUnicode */ 188ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->fromUnicodeStatus=(cnv->fromUnicodeStatus&0xf0000000)|0x1000000; /* keep version, inDirectMode=TRUE */ 189ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 190ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru} 191ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 192ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic void 193ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru_UTF7Open(UConverter *cnv, 19485bf2e2fbc60a9f938064abc8127d61da7d19882Claire Ho UConverterLoadArgs *pArgs, 195ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UErrorCode *pErrorCode) { 19685bf2e2fbc60a9f938064abc8127d61da7d19882Claire Ho if(UCNV_GET_VERSION(cnv)<=1) { 19785bf2e2fbc60a9f938064abc8127d61da7d19882Claire Ho /* TODO(markus): Should just use cnv->options rather than copying the version number. */ 19885bf2e2fbc60a9f938064abc8127d61da7d19882Claire Ho cnv->fromUnicodeStatus=UCNV_GET_VERSION(cnv)<<28; 199ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _UTF7Reset(cnv, UCNV_RESET_BOTH); 200ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 201ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_ILLEGAL_ARGUMENT_ERROR; 202ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 203ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru} 204ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 205ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic void 206ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru_UTF7ToUnicodeWithOffsets(UConverterToUnicodeArgs *pArgs, 207ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UErrorCode *pErrorCode) { 208ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UConverter *cnv; 209ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru const uint8_t *source, *sourceLimit; 210ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UChar *target; 211ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru const UChar *targetLimit; 212ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int32_t *offsets; 213ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 214ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint8_t *bytes; 215ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint8_t byteIndex; 216ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 217ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int32_t length, targetCapacity; 218ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 219ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* UTF-7 state */ 220ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint16_t bits; 221ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int8_t base64Counter; 222ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UBool inDirectMode; 223ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 224ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int8_t base64Value; 225ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 226ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int32_t sourceIndex, nextSourceIndex; 227ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 228ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint8_t b; 229ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* set up the local pointers */ 230ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv=pArgs->converter; 231ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 232ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru source=(const uint8_t *)pArgs->source; 233ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceLimit=(const uint8_t *)pArgs->sourceLimit; 234ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru target=pArgs->target; 235ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru targetLimit=pArgs->targetLimit; 236ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru offsets=pArgs->offsets; 237ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* get the state machine state */ 238ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru { 239ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint32_t status=cnv->toUnicodeStatus; 240ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=(UBool)((status>>24)&1); 241ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=(int8_t)(status>>16); 242ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint16_t)status; 243ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 244ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes=cnv->toUBytes; 245ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=cnv->toULength; 246ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 247ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* sourceIndex=-1 if the current character began in the previous buffer */ 248ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=byteIndex==0 ? 0 : -1; 249ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru nextSourceIndex=0; 250ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 251ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(inDirectMode) { 252ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QuerudirectMode: 253ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* 254ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * In Direct Mode, most US-ASCII characters are encoded directly, i.e., 255ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * with their US-ASCII byte values. 256ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Backslash and Tilde and most control characters are not allowed in UTF-7. 257ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * A plus sign starts Unicode (or "escape") Mode. 258ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 259ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * In Direct Mode, only the sourceIndex is used. 260ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 261ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=0; 262ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru length=(int32_t)(sourceLimit-source); 263ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru targetCapacity=(int32_t)(targetLimit-target); 264ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(length>targetCapacity) { 265ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru length=targetCapacity; 266ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 267ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru while(length>0) { 268ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=*source++; 269ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(!isLegalUTF7(b)) { 270ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* illegal */ 271ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes[0]=b; 272ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=1; 273ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_ILLEGAL_CHAR_FOUND; 274ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 275ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else if(b!=PLUS) { 276ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* write directly encoded character */ 277ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=b; 278ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 279ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 280ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 281ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else /* PLUS */ { 282ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* switch to Unicode mode */ 283ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru nextSourceIndex=++sourceIndex; 284ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=FALSE; 285ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=0; 286ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=0; 287ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=-1; 288ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto unicodeMode; 289ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 290ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru --length; 291ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 292ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(source<sourceLimit && target>=targetLimit) { 293ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* target is full */ 294ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 295ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 296ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 297ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QueruunicodeMode: 298ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* 299ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * In Unicode (or "escape") Mode, UTF-16BE is base64-encoded. 300ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * The base64 sequence ends with any character that is not in the base64 alphabet. 301ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * A terminating minus sign is consumed. 302ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 303ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * In Unicode Mode, the sourceIndex has the index to the start of the current 304ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * base64 bytes, while nextSourceIndex is precisely parallel to source, 305ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * keeping the index to the following byte. 306ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Note that in 2 out of 3 cases, UChars overlap within a base64 byte. 307ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 308ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru while(source<sourceLimit) { 309ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 310ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes[byteIndex++]=b=*source++; 311ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ++nextSourceIndex; 312b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho base64Value = -3; /* initialize as illegal */ 313b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho if(b>=126 || (base64Value=fromBase64[b])==-3 || base64Value==-1) { 314b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho /* either 315b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho * base64Value==-1 for any legal character except base64 and minus sign, or 316b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho * base64Value==-3 for illegal characters: 317b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho * 1. In either case, leave Unicode mode. 318b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho * 2.1. If we ended with an incomplete UChar or none after the +, then 319b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho * generate an error for the preceding erroneous sequence and deal with 320b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho * the current (possibly illegal) character next time through. 321b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho * 2.2. Else the current char comes after a complete UChar, which was already 322b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho * pushed to the output buf, so: 323b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho * 2.2.1. If the current char is legal, just save it for processing next time. 324b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho * It may be for example, a plus which we need to deal with in direct mode. 325b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho * 2.2.2. Else if the current char is illegal, we might as well deal with it here. 326b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho */ 327ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=TRUE; 328b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho if(base64Counter==-1) { 329b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho /* illegal: + immediately followed by something other than base64 or minus sign */ 330b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho /* include the plus sign in the reported sequence, but not the subsequent char */ 331b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho --source; 332b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho bytes[0]=PLUS; 333b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho byteIndex=1; 334b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho *pErrorCode=U_ILLEGAL_CHAR_FOUND; 335b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho break; 336b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } else if(bits!=0) { 337b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho /* bits are illegally left over, a UChar is incomplete */ 338b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho /* don't include current char (legal or illegal) in error seq */ 339b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho --source; 340b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho --byteIndex; 341b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho *pErrorCode=U_ILLEGAL_CHAR_FOUND; 342b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho break; 343b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } else { 344b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho /* previous UChar was complete */ 345b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho if(base64Value==-3) { 346b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho /* current character is illegal, deal with it here */ 347b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho *pErrorCode=U_ILLEGAL_CHAR_FOUND; 348b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho break; 349b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } else { 350b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho /* un-read the current character in case it is a plus sign */ 351b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho --source; 352b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho sourceIndex=nextSourceIndex-1; 353b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho goto directMode; 354b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } 355b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } 356b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } else if(base64Value>=0) { 357ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* collect base64 bytes into UChars */ 358ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru switch(base64Counter) { 359ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case -1: /* -1 is immediately after the + */ 360ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 0: 361ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=base64Value; 362ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=1; 363ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 364ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 1: 365ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 3: 366ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 4: 367ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 6: 368ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint16_t)((bits<<6)|base64Value); 369ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ++base64Counter; 370ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 371ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 2: 372ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=(UChar)((bits<<4)|(base64Value>>2)); 373ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 374ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 375ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=nextSourceIndex-1; 376ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 377ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes[0]=b; /* keep this byte in case an error occurs */ 378ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=1; 379ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint16_t)(base64Value&3); 380ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=3; 381ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 382ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 5: 383ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=(UChar)((bits<<2)|(base64Value>>4)); 384ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 385ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 386ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=nextSourceIndex-1; 387ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 388ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes[0]=b; /* keep this byte in case an error occurs */ 389ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=1; 390ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint16_t)(base64Value&15); 391ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=6; 392ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 393ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 7: 394ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=(UChar)((bits<<6)|base64Value); 395ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 396ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 397ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=nextSourceIndex; 398ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 399ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=0; 400ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=0; 401ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=0; 402ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 403ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru default: 404ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* will never occur */ 405ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 406ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 407b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } else /*base64Value==-2*/ { 408ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* minus sign terminates the base64 sequence */ 409ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=TRUE; 410ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(base64Counter==-1) { 411ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* +- i.e. a minus immediately following a plus */ 412ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=PLUS; 413ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 414ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex-1; 415ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 416ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 417ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* absorb the minus and leave the Unicode Mode */ 418ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(bits!=0) { 419ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* bits are illegally left over, a UChar is incomplete */ 420ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_ILLEGAL_CHAR_FOUND; 421ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 422ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 423ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 424ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=nextSourceIndex; 425ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto directMode; 426ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 427ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 428ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* target is full */ 429ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 430ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 431ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 432ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 433ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 434ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 435ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(U_SUCCESS(*pErrorCode) && pArgs->flush && source==sourceLimit && bits==0) { 436ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* 437ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * if we are in Unicode mode, then the byteIndex might not be 0, 438ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * but that is ok if bits==0 439ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * -> we set byteIndex=0 at the end of the stream to avoid a truncated error 440ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * (not true for IMAP-mailbox-name where we must end in direct mode) 441ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 442ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=0; 443ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 444ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 445ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* set the converter state back into UConverter */ 446ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->toUnicodeStatus=((uint32_t)inDirectMode<<24)|((uint32_t)((uint8_t)base64Counter)<<16)|(uint32_t)bits; 447ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->toULength=byteIndex; 448ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 449ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* write back the updated pointers */ 450ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->source=(const char *)source; 451ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->target=target; 452ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->offsets=offsets; 453ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru return; 454ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru} 455ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 456ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic void 457ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru_UTF7FromUnicodeWithOffsets(UConverterFromUnicodeArgs *pArgs, 458ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UErrorCode *pErrorCode) { 459ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UConverter *cnv; 460ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru const UChar *source, *sourceLimit; 461ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint8_t *target, *targetLimit; 462ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int32_t *offsets; 463ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 464ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int32_t length, targetCapacity, sourceIndex; 465ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UChar c; 466ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 467ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* UTF-7 state */ 468ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru const UBool *encodeDirectly; 469ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint8_t bits; 470ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int8_t base64Counter; 471ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UBool inDirectMode; 472ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 473ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* set up the local pointers */ 474ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv=pArgs->converter; 475ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 476ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* set up the local pointers */ 477ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru source=pArgs->source; 478ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceLimit=pArgs->sourceLimit; 479ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru target=(uint8_t *)pArgs->target; 480ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru targetLimit=(uint8_t *)pArgs->targetLimit; 481ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru offsets=pArgs->offsets; 482ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 483ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* get the state machine state */ 484ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru { 485ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint32_t status=cnv->fromUnicodeStatus; 486ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru encodeDirectly= status<0x10000000 ? encodeDirectlyMaximum : encodeDirectlyRestricted; 487ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=(UBool)((status>>24)&1); 488ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=(int8_t)(status>>16); 489ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint8_t)status; 49083a171d1a62abf406f7f44ae671823d5ec20db7dCraig Cornelius U_ASSERT(bits<=sizeof(toBase64)/sizeof(toBase64[0])); 491ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 492ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 493ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* UTF-7 always encodes UTF-16 code units, therefore we need only a simple sourceIndex */ 494ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=0; 495ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 496ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(inDirectMode) { 497ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QuerudirectMode: 498ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru length=(int32_t)(sourceLimit-source); 499ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru targetCapacity=(int32_t)(targetLimit-target); 500ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(length>targetCapacity) { 501ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru length=targetCapacity; 502ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 503ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru while(length>0) { 504ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru c=*source++; 505ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* currently always encode CR LF SP TAB directly */ 506ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(c<=127 && encodeDirectly[c]) { 507ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* encode directly */ 508ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=(uint8_t)c; 509ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 510ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 511ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 512ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else if(c==PLUS) { 513ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* output +- for + */ 514ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=PLUS; 515ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 516ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=MINUS; 517ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 518ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 519ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 520ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 521ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* realign length and targetCapacity */ 522ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto directMode; 523ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 524ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 525ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 526ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 527ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=MINUS; 528ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=1; 529ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 530ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 531ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 532ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 533ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* un-read this character and switch to Unicode Mode */ 534ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru --source; 535ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=PLUS; 536ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 537ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 538ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 539ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=FALSE; 540ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=0; 541ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto unicodeMode; 542ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 543ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru --length; 544ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 545ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(source<sourceLimit && target>=targetLimit) { 546ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* target is full */ 547ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 548ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 549ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 550ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QueruunicodeMode: 551ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru while(source<sourceLimit) { 552ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 553ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru c=*source++; 554ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(c<=127 && encodeDirectly[c]) { 555ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* encode directly */ 556ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=TRUE; 557ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 558ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* trick: back out this character to make this easier */ 559ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru --source; 560ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 561ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* terminate the base64 sequence */ 562ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(base64Counter!=0) { 563ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* write remaining bits for the previous character */ 564ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=toBase64[bits]; 565ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 566ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex-1; 567ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 568ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 569ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(fromBase64[c]!=-1) { 570ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* need to terminate with a minus */ 571ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 572ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=MINUS; 573ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 574ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex-1; 575ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 576ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 577ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=MINUS; 578ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=1; 579ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 580ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 581ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 582ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 583ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto directMode; 584ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 585ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* 586ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * base64 this character: 587ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Output 2 or 3 base64 bytes for the remaining bits of the previous character 588ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * and the bits of this character, each implicitly in UTF-16BE. 589ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 590ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Here, bits is an 8-bit variable because only 6 bits need to be kept from one 591ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * character to the next. The actual 2 or 4 bits are shifted to the left edge 592ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * of the 6-bits field 5..0 to make the termination of the base64 sequence easier. 593ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 594ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru switch(base64Counter) { 595ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 0: 596ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=toBase64[c>>10]; 597ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 598ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=toBase64[(c>>4)&0x3f]; 599ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 600ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 601ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 602ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 603ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 604ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 605ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 606ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 607ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=toBase64[(c>>4)&0x3f]; 608ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=1; 609ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 610ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 611ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint8_t)((c&15)<<2); 612ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=1; 613ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 614ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 1: 615ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=toBase64[bits|(c>>14)]; 616ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 617ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=toBase64[(c>>8)&0x3f]; 618ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 619ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=toBase64[(c>>2)&0x3f]; 620ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 621ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 622ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 623ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 624ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 625ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 626ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 627ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 628ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 629ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 630ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=toBase64[(c>>2)&0x3f]; 631ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=1; 632ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 633ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 634ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 635ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 636ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 637ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 638ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=toBase64[(c>>8)&0x3f]; 639ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[1]=toBase64[(c>>2)&0x3f]; 640ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=2; 641ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 642ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 643ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint8_t)((c&3)<<4); 644ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=2; 645ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 646ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 2: 647ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=toBase64[bits|(c>>12)]; 648ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 649ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=toBase64[(c>>6)&0x3f]; 650ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 651ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=toBase64[c&0x3f]; 652ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 653ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 654ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 655ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 656ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 657ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 658ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 659ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 660ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 661ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 662ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=toBase64[c&0x3f]; 663ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=1; 664ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 665ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 666ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 667ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 668ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 669ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 670ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=toBase64[(c>>6)&0x3f]; 671ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[1]=toBase64[c&0x3f]; 672ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=2; 673ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 674ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 675ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=0; 676ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=0; 677ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 678ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru default: 679ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* will never occur */ 680ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 681ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 682ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 683ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 684ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* target is full */ 685ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 686ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 687ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 688ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 689ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 690ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 691ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(pArgs->flush && source>=sourceLimit) { 692ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* flush remaining bits to the target */ 693b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho if(!inDirectMode) { 694b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho if (base64Counter!=0) { 695b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho if(target<targetLimit) { 696b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho *target++=toBase64[bits]; 697b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho if(offsets!=NULL) { 698b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho *offsets++=sourceIndex-1; 699b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } 700b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } else { 701b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho cnv->charErrorBuffer[cnv->charErrorBufferLength++]=toBase64[bits]; 702b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 703b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } 704b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho } 705b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho /* Add final MINUS to terminate unicodeMode */ 706ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 707b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho *target++=MINUS; 708ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 709ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex-1; 710ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 711ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 712b26ce3a7367e4ed2ee7ddddcdc3f3d3377a455c2claireho cnv->charErrorBuffer[cnv->charErrorBufferLength++]=MINUS; 713ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 714ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 715ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 716ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* reset the state for the next conversion */ 717ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->fromUnicodeStatus=(cnv->fromUnicodeStatus&0xf0000000)|0x1000000; /* keep version, inDirectMode=TRUE */ 718ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 719ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* set the converter state back into UConverter */ 720ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->fromUnicodeStatus= 721ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru (cnv->fromUnicodeStatus&0xf0000000)| /* keep version*/ 722ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ((uint32_t)inDirectMode<<24)|((uint32_t)base64Counter<<16)|(uint32_t)bits; 723ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 724ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 725ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* write back the updated pointers */ 726ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->source=source; 727ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->target=(char *)target; 728ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->offsets=offsets; 729ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru return; 730ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru} 731ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 732ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic const char * 733ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru_UTF7GetName(const UConverter *cnv) { 734ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru switch(cnv->fromUnicodeStatus>>28) { 735ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 1: 736ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru return "UTF-7,version=1"; 737ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru default: 738ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru return "UTF-7"; 739ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 740ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru} 741ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 742ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic const UConverterImpl _UTF7Impl={ 743ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UCNV_UTF7, 744ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 745ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 746ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 747ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 748ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _UTF7Open, 749ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 750ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _UTF7Reset, 751ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 752ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _UTF7ToUnicodeWithOffsets, 753ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _UTF7ToUnicodeWithOffsets, 754ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _UTF7FromUnicodeWithOffsets, 755ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _UTF7FromUnicodeWithOffsets, 756ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 757ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 758ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 759ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _UTF7GetName, 760ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, /* we don't need writeSub() because we never call a callback at fromUnicode() */ 761ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 762ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ucnv_getCompleteUnicodeSet 763ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 764ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 765ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic const UConverterStaticData _UTF7StaticData={ 766ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sizeof(UConverterStaticData), 767ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru "UTF-7", 768ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, /* TODO CCSID for UTF-7 */ 769ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UCNV_IBM, UCNV_UTF7, 770ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 4, 771ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru { 0x3f, 0, 0, 0 }, 1, /* the subchar is not used */ 772ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru FALSE, FALSE, 773ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, 774ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, 775ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } /* reserved */ 776ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 777ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 778ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queruconst UConverterSharedData _UTF7Data={ 779ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sizeof(UConverterSharedData), ~((uint32_t)0), 780ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, NULL, &_UTF7StaticData, FALSE, &_UTF7Impl, 781ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0 782ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 783ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 784ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* IMAP mailbox name encoding ----------------------------------------------- */ 785ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 786ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* 787ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * RFC 2060: INTERNET MESSAGE ACCESS PROTOCOL - VERSION 4rev1 788ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * http://www.ietf.org/rfc/rfc2060.txt 789ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 790ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 5.1.3. Mailbox International Naming Convention 791ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 792ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * By convention, international mailbox names are specified using a 793ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * modified version of the UTF-7 encoding described in [UTF-7]. The 794ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * purpose of these modifications is to correct the following problems 795ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * with UTF-7: 796ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 797ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 1) UTF-7 uses the "+" character for shifting; this conflicts with 798ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * the common use of "+" in mailbox names, in particular USENET 799ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * newsgroup names. 800ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 801ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 2) UTF-7's encoding is BASE64 which uses the "/" character; this 802ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * conflicts with the use of "/" as a popular hierarchy delimiter. 803ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 804ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 3) UTF-7 prohibits the unencoded usage of "\"; this conflicts with 805ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * the use of "\" as a popular hierarchy delimiter. 806ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 807ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 4) UTF-7 prohibits the unencoded usage of "~"; this conflicts with 808ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * the use of "~" in some servers as a home directory indicator. 809ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 810ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 5) UTF-7 permits multiple alternate forms to represent the same 811ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * string; in particular, printable US-ASCII chararacters can be 812ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * represented in encoded form. 813ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 814ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * In modified UTF-7, printable US-ASCII characters except for "&" 815ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * represent themselves; that is, characters with octet values 0x20-0x25 816ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * and 0x27-0x7e. The character "&" (0x26) is represented by the two- 817ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * octet sequence "&-". 818ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 819ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * All other characters (octet values 0x00-0x1f, 0x7f-0xff, and all 820ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Unicode 16-bit octets) are represented in modified BASE64, with a 821ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * further modification from [UTF-7] that "," is used instead of "/". 822ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Modified BASE64 MUST NOT be used to represent any printing US-ASCII 823ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * character which can represent itself. 824ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 825ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * "&" is used to shift to modified BASE64 and "-" to shift back to US- 826ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * ASCII. All names start in US-ASCII, and MUST end in US-ASCII (that 827ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * is, a name that ends with a Unicode 16-bit octet MUST end with a "- 828ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * "). 829ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 830ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * For example, here is a mailbox name which mixes English, Japanese, 831ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * and Chinese text: ~peter/mail/&ZeVnLIqe-/&U,BTFw- 832ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 833ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 834ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* 835ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Tests for US-ASCII characters belonging to character classes 836ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * defined in UTF-7. 837ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 838ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Set D (directly encoded characters) consists of the following 839ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * characters: the upper and lower case letters A through Z 840ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * and a through z, the 10 digits 0-9, and the following nine special 841ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * characters (note that "+" and "=" are omitted): 842ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * '(),-./:? 843ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 844ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Set O (optional direct characters) consists of the following 845ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * characters (note that "\" and "~" are omitted): 846ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * !"#$%&*;<=>@[]^_`{|} 847ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 848ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * According to the rules in RFC 2152, the byte values for the following 849ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * US-ASCII characters are not used in UTF-7 and are therefore illegal: 850ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - all C0 control codes except for CR LF TAB 851ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - BACKSLASH 852ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - TILDE 853ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - DEL 854ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * - all codes beyond US-ASCII, i.e. all >127 855ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 856ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 857ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* uses '&' not '+' to start a base64 sequence */ 858ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define AMPERSAND 0x26 859ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define COMMA 0x2c 860ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define SLASH 0x2f 861ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 862ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* legal byte values: all US-ASCII graphic characters 0x20..0x7e */ 863ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define isLegalIMAP(c) (0x20<=(c) && (c)<=0x7e) 864ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 865ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* direct-encode all of printable ASCII 0x20..0x7e except '&' 0x26 */ 866ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define inSetDIMAP(c) (isLegalIMAP(c) && c!=AMPERSAND) 867ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 868ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define TO_BASE64_IMAP(n) ((n)<63 ? toBase64[n] : COMMA) 869ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#define FROM_BASE64_IMAP(c) ((c)==COMMA ? 63 : (c)==SLASH ? -1 : fromBase64[c]) 870ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 871ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru/* 872ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * converter status values: 873ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 874ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * toUnicodeStatus: 875ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 24 inDirectMode (boolean) 876ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 23..16 base64Counter (-1..7) 877ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 15..0 bits (up to 14 bits incoming base64) 878ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 879ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * fromUnicodeStatus: 880ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 24 inDirectMode (boolean) 881ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 23..16 base64Counter (0..2) 882ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 7..0 bits (6 bits outgoing base64) 883ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 884ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * ignore bits 31..25 885ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 886ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 887ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic void 888ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru_IMAPToUnicodeWithOffsets(UConverterToUnicodeArgs *pArgs, 889ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UErrorCode *pErrorCode) { 890ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UConverter *cnv; 891ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru const uint8_t *source, *sourceLimit; 892ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UChar *target; 893ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru const UChar *targetLimit; 894ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int32_t *offsets; 895ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 896ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint8_t *bytes; 897ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint8_t byteIndex; 898ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 899ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int32_t length, targetCapacity; 900ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 901ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* UTF-7 state */ 902ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint16_t bits; 903ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int8_t base64Counter; 904ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UBool inDirectMode; 905ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 906ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int8_t base64Value; 907ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 908ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int32_t sourceIndex, nextSourceIndex; 909ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 910ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UChar c; 911ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint8_t b; 912ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 913ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* set up the local pointers */ 914ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv=pArgs->converter; 915ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 916ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru source=(const uint8_t *)pArgs->source; 917ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceLimit=(const uint8_t *)pArgs->sourceLimit; 918ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru target=pArgs->target; 919ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru targetLimit=pArgs->targetLimit; 920ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru offsets=pArgs->offsets; 921ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* get the state machine state */ 922ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru { 923ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint32_t status=cnv->toUnicodeStatus; 924ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=(UBool)((status>>24)&1); 925ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=(int8_t)(status>>16); 926ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint16_t)status; 927ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 928ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes=cnv->toUBytes; 929ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=cnv->toULength; 930ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 931ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* sourceIndex=-1 if the current character began in the previous buffer */ 932ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=byteIndex==0 ? 0 : -1; 933ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru nextSourceIndex=0; 934ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 935ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(inDirectMode) { 936ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QuerudirectMode: 937ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* 938ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * In Direct Mode, US-ASCII characters are encoded directly, i.e., 939ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * with their US-ASCII byte values. 940ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * An ampersand starts Unicode (or "escape") Mode. 941ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 942ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * In Direct Mode, only the sourceIndex is used. 943ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 944ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=0; 945ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru length=(int32_t)(sourceLimit-source); 946ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru targetCapacity=(int32_t)(targetLimit-target); 947ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(length>targetCapacity) { 948ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru length=targetCapacity; 949ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 950ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru while(length>0) { 951ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=*source++; 952ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(!isLegalIMAP(b)) { 953ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* illegal */ 954ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes[0]=b; 955ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=1; 956ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_ILLEGAL_CHAR_FOUND; 957ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 958ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else if(b!=AMPERSAND) { 959ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* write directly encoded character */ 960ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=b; 961ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 962ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 963ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 964ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else /* AMPERSAND */ { 965ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* switch to Unicode mode */ 966ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru nextSourceIndex=++sourceIndex; 967ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=FALSE; 968ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=0; 969ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=0; 970ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=-1; 971ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto unicodeMode; 972ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 973ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru --length; 974ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 975ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(source<sourceLimit && target>=targetLimit) { 976ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* target is full */ 977ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 978ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 979ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 980ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QueruunicodeMode: 981ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* 982ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * In Unicode (or "escape") Mode, UTF-16BE is base64-encoded. 983ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * The base64 sequence ends with any character that is not in the base64 alphabet. 984ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * A terminating minus sign is consumed. 985ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * US-ASCII must not be base64-ed. 986ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 987ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * In Unicode Mode, the sourceIndex has the index to the start of the current 988ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * base64 bytes, while nextSourceIndex is precisely parallel to source, 989ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * keeping the index to the following byte. 990ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Note that in 2 out of 3 cases, UChars overlap within a base64 byte. 991ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 992ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru while(source<sourceLimit) { 993ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 994ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes[byteIndex++]=b=*source++; 995ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ++nextSourceIndex; 996ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(b>0x7e) { 997ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* illegal - test other illegal US-ASCII values by base64Value==-3 */ 998ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=TRUE; 999ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_ILLEGAL_CHAR_FOUND; 1000ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1001ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else if((base64Value=FROM_BASE64_IMAP(b))>=0) { 1002ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* collect base64 bytes into UChars */ 1003ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru switch(base64Counter) { 1004ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case -1: /* -1 is immediately after the & */ 1005ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 0: 1006ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=base64Value; 1007ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=1; 1008ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1009ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 1: 1010ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 3: 1011ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 4: 1012ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 6: 1013ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint16_t)((bits<<6)|base64Value); 1014ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ++base64Counter; 1015ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1016ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 2: 1017ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru c=(UChar)((bits<<4)|(base64Value>>2)); 1018ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(isLegalIMAP(c)) { 1019ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* illegal */ 1020ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=TRUE; 1021ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_ILLEGAL_CHAR_FOUND; 1022ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto endloop; 1023ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1024ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=c; 1025ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1026ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1027ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=nextSourceIndex-1; 1028ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1029ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes[0]=b; /* keep this byte in case an error occurs */ 1030ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=1; 1031ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint16_t)(base64Value&3); 1032ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=3; 1033ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1034ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 5: 1035ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru c=(UChar)((bits<<2)|(base64Value>>4)); 1036ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(isLegalIMAP(c)) { 1037ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* illegal */ 1038ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=TRUE; 1039ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_ILLEGAL_CHAR_FOUND; 1040ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto endloop; 1041ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1042ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=c; 1043ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1044ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1045ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=nextSourceIndex-1; 1046ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1047ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes[0]=b; /* keep this byte in case an error occurs */ 1048ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=1; 1049ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint16_t)(base64Value&15); 1050ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=6; 1051ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1052ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 7: 1053ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru c=(UChar)((bits<<6)|base64Value); 1054ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(isLegalIMAP(c)) { 1055ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* illegal */ 1056ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=TRUE; 1057ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_ILLEGAL_CHAR_FOUND; 1058ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto endloop; 1059ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1060ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=c; 1061ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1062ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1063ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=nextSourceIndex; 1064ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1065ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=0; 1066ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=0; 1067ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=0; 1068ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1069ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru default: 1070ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* will never occur */ 1071ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1072ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1073ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else if(base64Value==-2) { 1074ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* minus sign terminates the base64 sequence */ 1075ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=TRUE; 1076ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(base64Counter==-1) { 1077ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* &- i.e. a minus immediately following an ampersand */ 1078ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=AMPERSAND; 1079ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1080ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex-1; 1081ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1082ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1083ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* absorb the minus and leave the Unicode Mode */ 1084ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(bits!=0 || (base64Counter!=0 && base64Counter!=3 && base64Counter!=6)) { 1085ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* bits are illegally left over, a UChar is incomplete */ 1086ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* base64Counter other than 0, 3, 6 means non-minimal zero-padding, also illegal */ 1087ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_ILLEGAL_CHAR_FOUND; 1088ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1089ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1090ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1091ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=nextSourceIndex; 1092ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto directMode; 1093ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1094ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(base64Counter==-1) { 1095ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* illegal: & immediately followed by something other than base64 or minus sign */ 1096ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* include the ampersand in the reported sequence */ 1097ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru --sourceIndex; 1098ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes[0]=AMPERSAND; 1099ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes[1]=b; 1100ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=2; 1101ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1102ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* base64Value==-1 for characters that are illegal only in Unicode mode */ 1103ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* base64Value==-3 for illegal characters */ 1104ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* illegal */ 1105ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=TRUE; 1106ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_ILLEGAL_CHAR_FOUND; 1107ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1108ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1109ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1110ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* target is full */ 1111ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1112ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1113ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1114ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1115ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1116ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queruendloop: 1117ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1118ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* 1119ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * the end of the input stream and detection of truncated input 1120ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * are handled by the framework, but here we must check if we are in Unicode 1121ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * mode and byteIndex==0 because we must end in direct mode 1122ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 1123ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * conditions: 1124ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * successful 1125ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * in Unicode mode and byteIndex==0 1126ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * end of input and no truncated input 1127ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 1128ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if( U_SUCCESS(*pErrorCode) && 1129ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru !inDirectMode && byteIndex==0 && 1130ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->flush && source>=sourceLimit 1131ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ) { 1132ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(base64Counter==-1) { 1133ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* & at the very end of the input */ 1134ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* make the ampersand the reported sequence */ 1135ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bytes[0]=AMPERSAND; 1136ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru byteIndex=1; 1137ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1138ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* else if(base64Counter!=-1) byteIndex remains 0 because there is no particular byte sequence */ 1139ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1140ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=TRUE; /* avoid looping */ 1141ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_TRUNCATED_CHAR_FOUND; 1142ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1143ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1144ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* set the converter state back into UConverter */ 1145ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->toUnicodeStatus=((uint32_t)inDirectMode<<24)|((uint32_t)((uint8_t)base64Counter)<<16)|(uint32_t)bits; 1146ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->toULength=byteIndex; 1147ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1148ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* write back the updated pointers */ 1149ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->source=(const char *)source; 1150ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->target=target; 1151ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->offsets=offsets; 1152ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru return; 1153ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru} 1154ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1155ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic void 1156ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru_IMAPFromUnicodeWithOffsets(UConverterFromUnicodeArgs *pArgs, 1157ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UErrorCode *pErrorCode) { 1158ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UConverter *cnv; 1159ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru const UChar *source, *sourceLimit; 1160ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint8_t *target, *targetLimit; 1161ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int32_t *offsets; 1162ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1163ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int32_t length, targetCapacity, sourceIndex; 1164ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UChar c; 1165ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint8_t b; 1166ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1167ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* UTF-7 state */ 1168ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint8_t bits; 1169ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru int8_t base64Counter; 1170ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UBool inDirectMode; 1171ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1172ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* set up the local pointers */ 1173ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv=pArgs->converter; 1174ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1175ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* set up the local pointers */ 1176ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru source=pArgs->source; 1177ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceLimit=pArgs->sourceLimit; 1178ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru target=(uint8_t *)pArgs->target; 1179ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru targetLimit=(uint8_t *)pArgs->targetLimit; 1180ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru offsets=pArgs->offsets; 1181ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1182ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* get the state machine state */ 1183ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru { 1184ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru uint32_t status=cnv->fromUnicodeStatus; 1185ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=(UBool)((status>>24)&1); 1186ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=(int8_t)(status>>16); 1187ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint8_t)status; 1188ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1189ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1190ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* UTF-7 always encodes UTF-16 code units, therefore we need only a simple sourceIndex */ 1191ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sourceIndex=0; 1192ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1193ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(inDirectMode) { 1194ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QuerudirectMode: 1195ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru length=(int32_t)(sourceLimit-source); 1196ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru targetCapacity=(int32_t)(targetLimit-target); 1197ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(length>targetCapacity) { 1198ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru length=targetCapacity; 1199ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1200ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru while(length>0) { 1201ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru c=*source++; 1202ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* encode 0x20..0x7e except '&' directly */ 1203ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(inSetDIMAP(c)) { 1204ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* encode directly */ 1205ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=(uint8_t)c; 1206ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1207ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 1208ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1209ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else if(c==AMPERSAND) { 1210ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* output &- for & */ 1211ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=AMPERSAND; 1212ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 1213ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=MINUS; 1214ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1215ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1216ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 1217ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1218ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* realign length and targetCapacity */ 1219ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto directMode; 1220ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1221ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1222ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 1223ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1224ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=MINUS; 1225ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=1; 1226ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1227ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1228ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1229ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1230ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* un-read this character and switch to Unicode Mode */ 1231ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru --source; 1232ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=AMPERSAND; 1233ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1234ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1235ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1236ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=FALSE; 1237ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=0; 1238ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto unicodeMode; 1239ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1240ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru --length; 1241ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1242ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(source<sourceLimit && target>=targetLimit) { 1243ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* target is full */ 1244ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1245ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1246ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1247ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste QueruunicodeMode: 1248ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru while(source<sourceLimit) { 1249ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 1250ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru c=*source++; 1251ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(isLegalIMAP(c)) { 1252ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* encode directly */ 1253ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru inDirectMode=TRUE; 1254ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1255ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* trick: back out this character to make this easier */ 1256ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru --source; 1257ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1258ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* terminate the base64 sequence */ 1259ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(base64Counter!=0) { 1260ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* write remaining bits for the previous character */ 1261ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=TO_BASE64_IMAP(bits); 1262ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1263ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex-1; 1264ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1265ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1266ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* need to terminate with a minus */ 1267ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 1268ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=MINUS; 1269ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1270ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex-1; 1271ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1272ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1273ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=MINUS; 1274ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=1; 1275ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1276ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1277ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1278ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru goto directMode; 1279ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1280ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* 1281ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * base64 this character: 1282ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Output 2 or 3 base64 bytes for the remaining bits of the previous character 1283ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * and the bits of this character, each implicitly in UTF-16BE. 1284ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * 1285ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * Here, bits is an 8-bit variable because only 6 bits need to be kept from one 1286ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * character to the next. The actual 2 or 4 bits are shifted to the left edge 1287ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru * of the 6-bits field 5..0 to make the termination of the base64 sequence easier. 1288ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru */ 1289ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru switch(base64Counter) { 1290ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 0: 1291ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)(c>>10); 1292ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=TO_BASE64_IMAP(b); 1293ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 1294ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)((c>>4)&0x3f); 1295ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=TO_BASE64_IMAP(b); 1296ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1297ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1298ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 1299ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1300ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1301ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1302ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 1303ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1304ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)((c>>4)&0x3f); 1305ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=TO_BASE64_IMAP(b); 1306ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=1; 1307ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1308ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1309ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint8_t)((c&15)<<2); 1310ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=1; 1311ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1312ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 1: 1313ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)(bits|(c>>14)); 1314ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=TO_BASE64_IMAP(b); 1315ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 1316ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)((c>>8)&0x3f); 1317ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=TO_BASE64_IMAP(b); 1318ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 1319ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)((c>>2)&0x3f); 1320ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=TO_BASE64_IMAP(b); 1321ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1322ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1323ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1324ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 1325ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1326ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1327ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1328ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1329ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 1330ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1331ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)((c>>2)&0x3f); 1332ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=TO_BASE64_IMAP(b); 1333ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=1; 1334ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1335ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1336ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1337ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1338ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 1339ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1340ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)((c>>8)&0x3f); 1341ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=TO_BASE64_IMAP(b); 1342ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)((c>>2)&0x3f); 1343ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[1]=TO_BASE64_IMAP(b); 1344ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=2; 1345ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1346ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1347ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=(uint8_t)((c&3)<<4); 1348ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=2; 1349ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1350ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru case 2: 1351ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)(bits|(c>>12)); 1352ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=TO_BASE64_IMAP(b); 1353ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 1354ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)((c>>6)&0x3f); 1355ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=TO_BASE64_IMAP(b); 1356ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 1357ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)(c&0x3f); 1358ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=TO_BASE64_IMAP(b); 1359ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1360ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1361ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1362ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 1363ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1364ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1365ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1366ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex; 1367ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 1368ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1369ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)(c&0x3f); 1370ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=TO_BASE64_IMAP(b); 1371ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=1; 1372ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1373ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1374ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1375ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1376ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex++; 1377ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1378ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)((c>>6)&0x3f); 1379ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[0]=TO_BASE64_IMAP(b); 1380ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru b=(uint8_t)(c&0x3f); 1381ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[1]=TO_BASE64_IMAP(b); 1382ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBufferLength=2; 1383ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1384ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1385ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru bits=0; 1386ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru base64Counter=0; 1387ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1388ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru default: 1389ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* will never occur */ 1390ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1391ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1392ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1393ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1394ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* target is full */ 1395ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1396ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru break; 1397ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1398ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1399ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1400ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1401ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(pArgs->flush && source>=sourceLimit) { 1402ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* flush remaining bits to the target */ 1403ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(!inDirectMode) { 1404ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(base64Counter!=0) { 1405ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 1406ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=TO_BASE64_IMAP(bits); 1407ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1408ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex-1; 1409ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1410ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1411ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[cnv->charErrorBufferLength++]=TO_BASE64_IMAP(bits); 1412ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1413ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1414ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1415ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* need to terminate with a minus */ 1416ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(target<targetLimit) { 1417ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *target++=MINUS; 1418ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru if(offsets!=NULL) { 1419ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *offsets++=sourceIndex-1; 1420ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1421ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1422ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->charErrorBuffer[cnv->charErrorBufferLength++]=MINUS; 1423ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru *pErrorCode=U_BUFFER_OVERFLOW_ERROR; 1424ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1425ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1426ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* reset the state for the next conversion */ 1427ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->fromUnicodeStatus=(cnv->fromUnicodeStatus&0xf0000000)|0x1000000; /* keep version, inDirectMode=TRUE */ 1428ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } else { 1429ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* set the converter state back into UConverter */ 1430ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru cnv->fromUnicodeStatus= 1431ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru (cnv->fromUnicodeStatus&0xf0000000)| /* keep version*/ 1432ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ((uint32_t)inDirectMode<<24)|((uint32_t)base64Counter<<16)|(uint32_t)bits; 1433ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru } 1434ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1435ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru /* write back the updated pointers */ 1436ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->source=source; 1437ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->target=(char *)target; 1438ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru pArgs->offsets=offsets; 1439ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru return; 1440ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru} 1441ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1442ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic const UConverterImpl _IMAPImpl={ 1443ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UCNV_IMAP_MAILBOX, 1444ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1445ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 1446ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 1447ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1448ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _UTF7Open, 1449ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 1450ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _UTF7Reset, 1451ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1452ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _IMAPToUnicodeWithOffsets, 1453ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _IMAPToUnicodeWithOffsets, 1454ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _IMAPFromUnicodeWithOffsets, 1455ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru _IMAPFromUnicodeWithOffsets, 1456ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 1457ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1458ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 1459ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 1460ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, /* we don't need writeSub() because we never call a callback at fromUnicode() */ 1461ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, 1462ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru ucnv_getCompleteUnicodeSet 1463ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 1464ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1465ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Querustatic const UConverterStaticData _IMAPStaticData={ 1466ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sizeof(UConverterStaticData), 1467ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru "IMAP-mailbox-name", 1468ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, /* TODO CCSID for IMAP-mailbox-name */ 1469ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru UCNV_IBM, UCNV_IMAP_MAILBOX, 1470ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1, 4, 1471ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru { 0x3f, 0, 0, 0 }, 1, /* the subchar is not used */ 1472ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru FALSE, FALSE, 1473ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, 1474ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0, 1475ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } /* reserved */ 1476ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 1477ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1478ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queruconst UConverterSharedData _IMAPData={ 1479ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru sizeof(UConverterSharedData), ~((uint32_t)0), 1480ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru NULL, NULL, &_IMAPStaticData, FALSE, &_IMAPImpl, 1481ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 0 1482ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru}; 1483ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru 1484ac04d0bbe12b3ef54518635711412f178cb4d16Jean-Baptiste Queru#endif 1485