2 Unix SMB/CIFS implementation.
3 Character set conversion Extensions
4 Copyright (C) Igor Vergeichik <iverg@mail.ru> 2001
5 Copyright (C) Andrew Tridgell 2001
6 Copyright (C) Simo Sorce 2001
7 Copyright (C) Martin Pool 2003
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
26 #endif /* HAVE_CONFIG_H */
35 #include <sys/param.h>
36 #ifdef HAVE_USABLE_ICONV
39 #include <arpa/inet.h>
41 #include <atalk/logger.h>
42 #include <atalk/unicode.h>
43 #include <atalk/util.h>
44 #include <atalk/compat.h>
46 #include "byteorder.h"
52 * @brief Character-set conversion routines built on our iconv.
54 * @note Samba's internal character set (at least in the 3.0 series)
55 * is always the same as the one for the Unix filesystem. It is
56 * <b>not</b> necessarily UTF-8 and may be different on machines that
57 * need i18n filenames to be compatible with Unix software. It does
58 * have to be a superset of ASCII. All multibyte sequences must start
59 * with a byte with the high bit set.
65 #define MAX_CHARSETS 20
67 #define CHECK_FLAGS(a,b) (((a)!=NULL) ? (*(a) & (b)) : 0 )
69 static atalk_iconv_t conv_handles[MAX_CHARSETS][MAX_CHARSETS];
70 char* charset_names[MAX_CHARSETS];
71 static struct charset_functions* charsets[MAX_CHARSETS];
72 static char hexdig[] = "0123456789abcdef";
73 #define hextoint( c ) ( isdigit( c ) ? c - '0' : c + 10 - 'a' )
77 * Return the name of a charset to give to iconv().
79 static const char *charset_name(charset_t ch)
81 const char *ret = NULL;
83 if (ch == CH_UCS2) ret = "UCS-2";
84 else if (ch == CH_UTF8) ret = "UTF8";
85 else if (ch == CH_UTF8_MAC) ret = "UTF8-MAC";
86 else ret = charset_names[ch];
90 static struct charset_functions* get_charset_functions (charset_t ch)
92 if (charsets[ch] != NULL)
95 charsets[ch] = find_charset_functions(charset_name(ch));
101 static void lazy_initialize_conv(void)
103 static int initialized = 0;
111 charset_t add_charset(const char* name)
113 static charset_t max_charset_t = NUM_CHARSETS-1;
114 charset_t cur_charset_t = max_charset_t+1;
117 lazy_initialize_conv();
119 for (c1=0; c1<=max_charset_t;c1++) {
120 if ( strcasecmp(name, charset_name(c1)) == 0)
124 if ( cur_charset_t >= MAX_CHARSETS ) {
125 LOG (log_debug, logtype_default, "Adding charset %s failed, too many charsets (max. %u allowed)",
127 return (charset_t) -1;
130 /* First try to setup the required conversions */
132 conv_handles[cur_charset_t][CH_UCS2] = atalk_iconv_open( charset_name(CH_UCS2), name);
133 if (conv_handles[cur_charset_t][CH_UCS2] == (atalk_iconv_t)-1) {
134 LOG(log_error, logtype_default, "Required conversion from %s to %s not supported",
135 name, charset_name(CH_UCS2));
136 conv_handles[cur_charset_t][CH_UCS2] = NULL;
137 return (charset_t) -1;
140 conv_handles[CH_UCS2][cur_charset_t] = atalk_iconv_open( name, charset_name(CH_UCS2));
141 if (conv_handles[CH_UCS2][cur_charset_t] == (atalk_iconv_t)-1) {
142 LOG(log_error, logtype_default, "Required conversion from %s to %s not supported",
143 charset_name(CH_UCS2), name);
144 conv_handles[CH_UCS2][cur_charset_t] = NULL;
145 return (charset_t) -1;
148 /* register the new charset_t name */
149 charset_names[cur_charset_t] = strdup(name);
151 charsets[cur_charset_t] = get_charset_functions (cur_charset_t);
155 LOG(log_debug9, logtype_default, "Added charset %s with handle %u", name, cur_charset_t);
157 return (cur_charset_t);
161 * Initialize iconv conversion descriptors.
163 * This is called the first time it is needed, and also called again
164 * every time the configuration is reloaded, because the charset or
165 * codepage might have changed.
167 void init_iconv(void)
171 for (c1=0;c1<NUM_CHARSETS;c1++) {
172 const char *name = charset_name((charset_t)c1);
174 conv_handles[c1][CH_UCS2] = atalk_iconv_open( charset_name(CH_UCS2), name);
175 if (conv_handles[c1][CH_UCS2] == (atalk_iconv_t)-1) {
176 LOG(log_error, logtype_default, "Required conversion from %s to %s not supported",
177 name, charset_name(CH_UCS2));
178 conv_handles[c1][CH_UCS2] = NULL;
181 if (c1 != CH_UCS2) { /* avoid lost memory, make valgrind happy */
182 conv_handles[CH_UCS2][c1] = atalk_iconv_open( name, charset_name(CH_UCS2));
183 if (conv_handles[CH_UCS2][c1] == (atalk_iconv_t)-1) {
184 LOG(log_error, logtype_default, "Required conversion from %s to %s not supported",
185 charset_name(CH_UCS2), name);
186 conv_handles[CH_UCS2][c1] = NULL;
190 charsets[c1] = get_charset_functions (c1);
197 static size_t add_null(charset_t to, char *buf, size_t bytesleft, size_t len)
199 /* Terminate the string */
200 if (to == CH_UCS2 && bytesleft >= 2) {
205 else if ( to != CH_UCS2 && bytesleft > 0 )
217 * Convert string from one encoding to another, making error checking etc
219 * @param src pointer to source string (multibyte or singlebyte)
220 * @param srclen length of the source string in bytes
221 * @param dest pointer to destination string (multibyte or singlebyte)
222 * @param destlen maximal length allowed for string
223 * @returns the number of bytes occupied in the destination
225 static size_t convert_string_internal(charset_t from, charset_t to,
226 void const *src, size_t srclen,
227 void *dest, size_t destlen)
231 const char* inbuf = (const char*)src;
232 char* outbuf = (char*)dest;
233 char* o_save = outbuf;
234 atalk_iconv_t descriptor;
236 /* Fixed based on Samba 3.0.6 */
237 if (srclen == (size_t)-1) {
238 if (from == CH_UCS2) {
239 srclen = (strlen_w((const ucs2_t *)src)) * 2;
241 srclen = strlen((const char *)src);
246 lazy_initialize_conv();
248 descriptor = conv_handles[from][to];
250 if (descriptor == (atalk_iconv_t)-1 || descriptor == (atalk_iconv_t)0) {
256 retval = atalk_iconv(descriptor, &inbuf, &i_len, &outbuf, &o_len);
257 if(retval==(size_t)-1) {
258 const char *reason="unknown error";
261 reason="Incomplete multibyte sequence";
264 reason="No more room";
267 reason="Illegal multibyte sequence";
270 LOG(log_debug, logtype_default,"Conversion error: %s",reason);
274 /* Terminate the string */
275 return add_null( to, o_save, o_len, destlen -o_len);
279 size_t convert_string(charset_t from, charset_t to,
280 void const *src, size_t srclen,
281 void *dest, size_t destlen)
285 ucs2_t buffer[MAXPATHLEN];
286 ucs2_t buffer2[MAXPATHLEN];
288 /* convert from_set to UCS2 */
289 if ((size_t)-1 == ( o_len = convert_string_internal( from, CH_UCS2, src, srclen,
290 (char*) buffer, sizeof(buffer))) ) {
291 LOG(log_error, logtype_default, "Conversion failed ( %s to CH_UCS2 )", charset_name(from));
295 /* Do pre/decomposition */
296 i_len = sizeof(buffer2);
298 if (charsets[to] && (charsets[to]->flags & CHARSET_DECOMPOSED) ) {
299 if ( (size_t)-1 == (i_len = decompose_w(buffer, o_len, u, &i_len)) )
302 else if (!charsets[from] || (charsets[from]->flags & CHARSET_DECOMPOSED)) {
303 if ( (size_t)-1 == (i_len = precompose_w(buffer, o_len, u, &i_len)) )
310 /* Convert UCS2 to to_set */
311 if ((size_t)(-1) == ( o_len = convert_string_internal( CH_UCS2, to, (char*) u, i_len, dest, destlen)) ) {
312 LOG(log_error, logtype_default, "Conversion failed (CH_UCS2 to %s):%s", charset_name(to), strerror(errno));
322 * Convert between character sets, allocating a new buffer for the result.
324 * @param srclen length of source buffer.
325 * @param dest always set at least to NULL
326 * @note -1 is not accepted for srclen.
328 * @returns Size in bytes of the converted string; or -1 in case of error.
331 static size_t convert_string_allocate_internal(charset_t from, charset_t to,
332 void const *src, size_t srclen, char **dest)
334 size_t i_len, o_len, destlen;
336 const char *inbuf = (const char *)src;
337 char *outbuf = NULL, *ob = NULL;
338 atalk_iconv_t descriptor;
342 if (src == NULL || srclen == (size_t)-1)
345 lazy_initialize_conv();
347 descriptor = conv_handles[from][to];
349 if (descriptor == (atalk_iconv_t)-1 || descriptor == (atalk_iconv_t)0) {
350 /* conversion not supported, return -1*/
351 LOG(log_debug, logtype_default, "convert_string_allocate: conversion not supported!");
355 destlen = MAX(srclen, 512);
357 destlen = destlen * 2;
358 outbuf = (char *)realloc(ob, destlen);
360 LOG(log_debug, logtype_default,"convert_string_allocate: realloc failed!");
366 inbuf = src; /* this restarts the whole conversion if buffer needed to be increased */
369 retval = atalk_iconv(descriptor,
372 if(retval == (size_t)-1) {
373 const char *reason="unknown error";
376 reason="Incomplete multibyte sequence";
381 reason="Illegal multibyte sequence";
384 LOG(log_debug, logtype_default,"Conversion error: %s(%s)",reason,inbuf);
390 destlen = destlen - o_len;
392 /* Terminate the string */
393 if (to == CH_UCS2 && o_len >= 2) {
396 *dest = (char *)realloc(ob,destlen+2);
398 else if ( to != CH_UCS2 && o_len > 0 ) {
400 *dest = (char *)realloc(ob,destlen+1);
403 goto convert; /* realloc */
406 if (destlen && !*dest) {
407 LOG(log_debug, logtype_default, "convert_string_allocate: out of memory!");
416 size_t convert_string_allocate(charset_t from, charset_t to,
417 void const *src, size_t srclen,
422 ucs2_t buffer[MAXPATHLEN];
423 ucs2_t buffer2[MAXPATHLEN];
427 /* convert from_set to UCS2 */
428 if ((size_t)(-1) == ( o_len = convert_string_internal( from, CH_UCS2, src, srclen,
429 buffer, sizeof(buffer))) ) {
430 LOG(log_error, logtype_default, "Conversion failed ( %s to CH_UCS2 )", charset_name(from));
434 /* Do pre/decomposition */
435 i_len = sizeof(buffer2);
437 if (charsets[to] && (charsets[to]->flags & CHARSET_DECOMPOSED) ) {
438 if ( (size_t)-1 == (i_len = decompose_w(buffer, o_len, u, &i_len)) )
441 else if ( !charsets[from] || (charsets[from]->flags & CHARSET_DECOMPOSED) ) {
442 if ( (size_t)-1 == (i_len = precompose_w(buffer, o_len, u, &i_len)) )
450 /* Convert UCS2 to to_set */
451 if ((size_t)-1 == ( o_len = convert_string_allocate_internal( CH_UCS2, to, (char*)u, i_len, dest)) )
452 LOG(log_error, logtype_default, "Conversion failed (CH_UCS2 to %s):%s", charset_name(to), strerror(errno));
458 size_t charset_strupper(charset_t ch, const char *src, size_t srclen, char *dest, size_t destlen)
463 size = convert_string_allocate_internal(ch, CH_UCS2, src, srclen,
465 if (size == (size_t)-1) {
469 if (!strupper_w((ucs2_t *)buffer) && (dest == src)) {
474 size = convert_string_internal(CH_UCS2, ch, buffer, size, dest, destlen);
479 size_t charset_strlower(charset_t ch, const char *src, size_t srclen, char *dest, size_t destlen)
484 size = convert_string_allocate_internal(ch, CH_UCS2, src, srclen,
486 if (size == (size_t)-1) {
490 if (!strlower_w((ucs2_t *)buffer) && (dest == src)) {
495 size = convert_string_internal(CH_UCS2, ch, buffer, size, dest, destlen);
501 size_t unix_strupper(const char *src, size_t srclen, char *dest, size_t destlen)
503 return charset_strupper( CH_UNIX, src, srclen, dest, destlen);
506 size_t unix_strlower(const char *src, size_t srclen, char *dest, size_t destlen)
508 return charset_strlower( CH_UNIX, src, srclen, dest, destlen);
511 size_t utf8_strupper(const char *src, size_t srclen, char *dest, size_t destlen)
513 return charset_strupper( CH_UTF8, src, srclen, dest, destlen);
516 size_t utf8_strlower(const char *src, size_t srclen, char *dest, size_t destlen)
518 return charset_strlower( CH_UTF8, src, srclen, dest, destlen);
522 * Copy a string from a charset_t char* src to a UCS2 destination, allocating a buffer
524 * @param dest always set at least to NULL
526 * @returns The number of bytes occupied by the string in the destination
527 * or -1 in case of error.
530 size_t charset_to_ucs2_allocate(charset_t ch, ucs2_t **dest, const char *src)
532 size_t src_len = strlen(src);
535 return convert_string_allocate(ch, CH_UCS2, src, src_len, (char**) dest);
538 /** -----------------------------------
539 * Copy a string from a charset_t char* src to a UTF-8 destination, allocating a buffer
541 * @param dest always set at least to NULL
543 * @returns The number of bytes occupied by the string in the destination
546 size_t charset_to_utf8_allocate(charset_t ch, char **dest, const char *src)
548 size_t src_len = strlen(src);
551 return convert_string_allocate(ch, CH_UTF8, src, src_len, dest);
554 /** -----------------------------------
555 * Copy a string from a UCS2 src to a unix char * destination, allocating a buffer
557 * @param dest always set at least to NULL
559 * @returns The number of bytes occupied by the string in the destination
562 size_t ucs2_to_charset(charset_t ch, const ucs2_t *src, char *dest, size_t destlen)
564 size_t src_len = (strlen_w(src)) * sizeof(ucs2_t);
565 return convert_string(CH_UCS2, ch, src, src_len, dest, destlen);
568 /* --------------------------------- */
569 size_t ucs2_to_charset_allocate(charset_t ch, char **dest, const ucs2_t *src)
571 size_t src_len = (strlen_w(src)) * sizeof(ucs2_t);
573 return convert_string_allocate(CH_UCS2, ch, src, src_len, dest);
576 /** ---------------------------------
577 * Copy a string from a UTF-8 src to a unix char * destination, allocating a buffer
579 * @param dest always set at least to NULL
581 * @returns The number of bytes occupied by the string in the destination
584 size_t utf8_to_charset_allocate(charset_t ch, char **dest, const char *src)
586 size_t src_len = strlen(src);
588 return convert_string_allocate(CH_UTF8, ch, src, src_len, dest);
591 size_t charset_precompose ( charset_t ch, char * src, size_t inlen, char * dst, size_t outlen)
594 ucs2_t u[MAXPATHLEN];
598 if ((size_t)(-1) == (len = convert_string_allocate_internal(ch, CH_UCS2, src, inlen, &buffer)) )
603 if ( (size_t)-1 == (ilen = precompose_w((ucs2_t *)buffer, len, u, &ilen)) ) {
608 if ((size_t)(-1) == (len = convert_string_internal( CH_UCS2, ch, (char*)u, ilen, dst, outlen)) ) {
617 size_t charset_decompose ( charset_t ch, char * src, size_t inlen, char * dst, size_t outlen)
620 ucs2_t u[MAXPATHLEN];
624 if ((size_t)(-1) == (len = convert_string_allocate_internal(ch, CH_UCS2, src, inlen, &buffer)) )
629 if ( (size_t)-1 == (ilen = decompose_w((ucs2_t *)buffer, len, u, &ilen)) ) {
634 if ((size_t)(-1) == (len = convert_string_internal( CH_UCS2, ch, (char*)u, ilen, dst, outlen)) ) {
643 size_t utf8_precompose ( char * src, size_t inlen, char * dst, size_t outlen)
645 return charset_precompose ( CH_UTF8, src, inlen, dst, outlen);
648 size_t utf8_decompose ( char * src, size_t inlen, char * dst, size_t outlen)
650 return charset_decompose ( CH_UTF8, src, inlen, dst, outlen);
654 static char debugbuf[ MAXPATHLEN +1 ];
655 char * debug_out ( char * seq, size_t len)
661 p = (unsigned char*) seq;
664 for ( i = 0; i<=(len-1); i++)
666 sprintf(q, "%2.2x.", *p);
677 * Convert from MB to UCS2 charset
679 * CONV_UNESCAPEHEX: ':XX' will be converted to an UCS2 character
680 * CONV_IGNORE: return the first convertable characters.
681 * CONV_FORCE: force convertion
683 * This will *not* work if the destination charset is not multibyte, i.e. UCS2->UCS2 will fail
684 * The (un)escape scheme is not compatible to the old cap style escape. This is bad, we need it
685 * for e.g. HFS cdroms.
688 static size_t pull_charset_flags (charset_t from_set, charset_t cap_set, const char *src, size_t srclen, char* dest, size_t destlen, uint16_t *flags)
690 const uint16_t option = (flags ? *flags : 0);
693 const char* inbuf = (const char*)src;
695 atalk_iconv_t descriptor;
696 atalk_iconv_t descriptor_cap;
698 if (srclen == (size_t)-1)
699 srclen = strlen(src) + 1;
701 descriptor = conv_handles[from_set][CH_UCS2];
702 descriptor_cap = conv_handles[cap_set][CH_UCS2];
704 if (descriptor == (atalk_iconv_t)-1 || descriptor == (atalk_iconv_t)0) {
713 for (j = 0; j < i_len; ++j)
720 atalk_iconv(descriptor, &inbuf, &i_len, &outbuf, &o_len) == (size_t)-1) {
721 if (errno == EILSEQ || errno == EINVAL) {
723 if ((option & CONV_IGNORE)) {
724 *flags |= CONV_REQMANGLE;
725 return destlen - o_len;
727 if ((option & CONV__EILSEQ)) {
732 *((ucs2_t *)outbuf) = (ucs2_t) IGNORE_CHAR; /**inbuf */
737 /* FIXME reset stat ? */
748 if ((option & CONV_UNESCAPEHEX)) {
749 /* treat it as a CAP hex encoded char */
753 while (i_len >= 3 && inbuf[0] == ':' &&
754 isxdigit(inbuf[1]) && isxdigit(inbuf[2])) {
755 h[hlen++] = (hextoint(inbuf[1]) << 4) | hextoint(inbuf[2]);
760 const char *h_buf = h;
761 if (atalk_iconv(descriptor_cap, &h_buf, &hlen, &outbuf, &o_len) == (size_t)-1) {
764 if (errno == EILSEQ && (option & CONV_IGNORE)) {
765 *flags |= CONV_REQMANGLE;
766 return destlen - o_len;
771 /* We have an invalid :xx sequence */
773 if ((option & CONV_IGNORE)) {
774 *flags |= CONV_REQMANGLE;
775 return destlen - o_len;
780 /* a ':' that we just convert to a '/' */
781 ucs2_t slash = 0x002f;
782 memcpy(outbuf, &slash, sizeof(ucs2_t));
791 return (i_len + j == 0 || (option & CONV_FORCE)) ? destlen - o_len : (size_t)-1;
795 * Convert from UCS2 to MB charset
797 * CONV_ESCAPEDOTS: escape leading dots
798 * CONV_ESCAPEHEX: unconvertable characters and '/' will be escaped to :XX
799 * CONV_IGNORE: return the first convertable characters.
800 * CONV__EILSEQ: unconvertable characters will be replaced with '_'
801 * CONV_FORCE: force convertion
803 * CONV_IGNORE and CONV_ESCAPEHEX can't work together. Should we check this ?
804 * This will *not* work if the destination charset is not multibyte, i.e. UCS2->UCS2 will fail
805 * The escape scheme is not compatible to the old cap style escape. This is bad, we need it
806 * for e.g. HFS cdroms.
810 static size_t push_charset_flags (charset_t to_set, charset_t cap_set, char* src, size_t srclen, char* dest, size_t destlen, uint16_t *flags)
812 const uint16_t option = (flags ? *flags : 0);
813 size_t i_len, o_len, i;
815 const char* inbuf = (const char*)src;
816 char* outbuf = (char*)dest;
817 atalk_iconv_t descriptor;
818 atalk_iconv_t descriptor_cap;
819 char escch; /* 150210: uninitialized OK, depends on j */
821 descriptor = conv_handles[CH_UCS2][to_set];
822 descriptor_cap = conv_handles[CH_UCS2][cap_set];
824 if (descriptor == (atalk_iconv_t)-1 || descriptor == (atalk_iconv_t)0) {
832 if ((option & CONV_ESCAPEDOTS) &&
833 i_len >= 2 && SVAL(inbuf, 0) == 0x002e) { /* 0x002e = . */
844 *flags |= CONV_REQESCAPE;
848 for (i = 0; i < i_len; i += 2) {
849 ucs2_t c = SVAL(inbuf, i);
851 case 0x003a: /* 0x003a = ':' */
852 if ( ! (option & CONV_ALLOW_COLON)) {
860 case 0x002f: /* 0x002f = '/' */
868 atalk_iconv(descriptor, &inbuf, &i_len, &outbuf, &o_len) == (size_t)-1) {
869 if (errno == EILSEQ) {
870 if ((option & CONV_IGNORE)) {
871 *flags |= CONV_REQMANGLE;
872 return destlen - o_len;
874 if ((option & CONV_ESCAPEHEX)) {
875 const size_t bufsiz = o_len / 3 + 1;
876 char *buf = malloc(bufsiz);
882 for (buflen = 1; buflen <= bufsiz; ++buflen) {
885 if (atalk_iconv(descriptor_cap, &inbuf, &i, &b, &o) != (size_t)-1) {
888 } else if (errno != E2BIG) {
891 } else if (o < buflen) {
896 if (o_len < buflen * 3) {
903 for (i = 0; i < buflen; ++i) {
905 *outbuf++ = hexdig[(buf[i] >> 4) & 0x0f];
906 *outbuf++ = hexdig[buf[i] & 0x0f];
909 *flags |= CONV_REQESCAPE;
917 /* we have a ':' or '/' */
920 if ((option & CONV_ESCAPEHEX)) {
921 /* CAP hex encode it */
939 * THIS SHOULD NEVER BE REACHED !!!
940 * As a safety net I put in a ' ' here
956 default: /* should never be reached */
966 if (i_len > 0) errno = EINVAL;
968 return (i_len + j == 0 || (option & CONV_FORCE)) ? destlen - o_len : (size_t)-1;
972 * FIXME the size is a mess we really need a malloc/free logic
973 *`dest size must be dest_len +2
975 size_t convert_charset ( charset_t from_set, charset_t to_set, charset_t cap_charset, const char *src, size_t src_len, char *dest, size_t dest_len, uint16_t *flags)
979 ucs2_t buffer[MAXPATHLEN +2];
980 ucs2_t buffer2[MAXPATHLEN +2];
982 lazy_initialize_conv();
984 /* convert from_set to UCS2 */
985 if ((size_t)(-1) == ( o_len = pull_charset_flags( from_set, cap_charset, src, src_len,
986 (char *) buffer, sizeof(buffer) -2, flags)) ) {
987 LOG(log_error, logtype_default, "Conversion failed ( %s to CH_UCS2 )", charset_name(from_set));
994 /* Do pre/decomposition */
995 i_len = sizeof(buffer2) -2;
997 if (CHECK_FLAGS(flags, CONV_DECOMPOSE) || (charsets[to_set] && (charsets[to_set]->flags & CHARSET_DECOMPOSED)) ) {
998 if ( (size_t)-1 == (i_len = decompose_w(buffer, o_len, u, &i_len)) )
1001 else if (CHECK_FLAGS(flags, CONV_PRECOMPOSE) || !charsets[from_set] || (charsets[from_set]->flags & CHARSET_DECOMPOSED)) {
1002 if ( (size_t)-1 == (i_len = precompose_w(buffer, o_len, u, &i_len)) )
1003 return (size_t)(-1);
1009 /* null terminate */
1013 /* Do case conversions */
1014 if (CHECK_FLAGS(flags, CONV_TOUPPER)) {
1017 else if (CHECK_FLAGS(flags, CONV_TOLOWER)) {
1021 /* Convert UCS2 to to_set */
1022 if ((size_t)(-1) == ( o_len = push_charset_flags( to_set, cap_charset, (char *)u, i_len, dest, dest_len, flags )) ) {
1023 LOG(log_error, logtype_default,
1024 "Conversion failed (CH_UCS2 to %s):%s", charset_name(to_set), strerror(errno));
1027 /* null terminate */