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
46 #include <netatalk/endian.h>
47 #include <atalk/logger.h>
48 #include <atalk/unicode.h>
49 #include "byteorder.h"
55 * @brief Character-set conversion routines built on our iconv.
57 * @note Samba's internal character set (at least in the 3.0 series)
58 * is always the same as the one for the Unix filesystem. It is
59 * <b>not</b> necessarily UTF-8 and may be different on machines that
60 * need i18n filenames to be compatible with Unix software. It does
61 * have to be a superset of ASCII. All multibyte sequences must start
62 * with a byte with the high bit set.
68 #define MAX_CHARSETS 10
70 #define CHECK_FLAGS(a,b) (((a)!=NULL) ? (*(a) & (b)) : 0 )
72 static atalk_iconv_t conv_handles[MAX_CHARSETS][MAX_CHARSETS];
73 static char* charset_names[MAX_CHARSETS];
74 static struct charset_functions* charsets[MAX_CHARSETS];
75 static char hexdig[] = "0123456789abcdef";
76 #define hextoint( c ) ( isdigit( c ) ? c - '0' : c + 10 - 'a' )
79 * Return the name of a charset to give to iconv().
81 static const char *charset_name(charset_t ch)
83 const char *ret = NULL;
85 if (ch == CH_UCS2) ret = "UCS-2";
86 else if (ch == CH_UNIX) ret = "LOCALE"; /*lp_unix_charset();*/
87 else if (ch == CH_MAC) ret = "MAC_ROMAN"; /*lp_display_charset();*/
88 else if (ch == CH_UTF8) ret = "UTF8";
89 else if (ch == CH_UTF8_MAC) ret = "UTF8-MAC";
92 ret = charset_names[ch];
94 #if defined(HAVE_NL_LANGINFO) && defined(CODESET)
95 if (ret && strcasecmp(ret, "LOCALE") == 0) {
96 const char *ln = NULL;
99 setlocale(LC_ALL, "");
101 ln = nl_langinfo(CODESET);
103 /* Check whether the charset name is supported
105 atalk_iconv_t handle = atalk_iconv_open(ln,"UCS-2");
106 if (handle == (atalk_iconv_t) -1) {
107 LOG(log_debug, logtype_default, "Locale charset '%s' unsupported, using ASCII instead", ln);
110 atalk_iconv_close(handle);
115 #else /* system doesn't have LOCALE support */
116 if (ch == CH_UNIX) ret = NULL;
119 if (!ret || !*ret) ret = "ASCII";
123 struct charset_functions* get_charset_functions (charset_t ch)
125 if (charsets[ch] != NULL)
128 charsets[ch] = find_charset_functions(charset_name(ch));
134 void lazy_initialize_conv(void)
136 static int initialized = 0;
144 charset_t add_charset(char* name)
146 static charset_t max_charset_t = NUM_CHARSETS-1;
147 charset_t cur_charset_t = max_charset_t+1;
150 lazy_initialize_conv();
152 for (c1=0; c1<=max_charset_t;c1++) {
153 if ( strcasecmp(name, charset_name(c1)) == 0)
157 if ( cur_charset_t >= MAX_CHARSETS ) {
158 LOG (log_debug, logtype_default, "Adding charset %s failed, too many charsets (max. %u allowed)",
160 return (charset_t) -1;
163 /* First try to setup the required conversions */
165 conv_handles[cur_charset_t][CH_UCS2] = atalk_iconv_open( charset_name(CH_UCS2), name);
166 if (conv_handles[cur_charset_t][CH_UCS2] == (atalk_iconv_t)-1) {
167 LOG(log_error, logtype_default, "Required conversion from %s to %s not supported",
168 name, charset_name(CH_UCS2));
169 conv_handles[cur_charset_t][CH_UCS2] = NULL;
170 return (charset_t) -1;
173 conv_handles[CH_UCS2][cur_charset_t] = atalk_iconv_open( name, charset_name(CH_UCS2));
174 if (conv_handles[CH_UCS2][cur_charset_t] == (atalk_iconv_t)-1) {
175 LOG(log_error, logtype_default, "Required conversion from %s to %s not supported",
176 charset_name(CH_UCS2), name);
177 conv_handles[CH_UCS2][cur_charset_t] = NULL;
178 return (charset_t) -1;
181 /* register the new charset_t name */
182 charset_names[cur_charset_t] = strdup(name);
184 charsets[cur_charset_t] = get_charset_functions (cur_charset_t);
188 LOG(log_debug, logtype_default, "Added charset %s with handle %u", name, cur_charset_t);
190 return (cur_charset_t);
194 * Initialize iconv conversion descriptors.
196 * This is called the first time it is needed, and also called again
197 * every time the configuration is reloaded, because the charset or
198 * codepage might have changed.
200 void init_iconv(void)
204 for (c1=0;c1<NUM_CHARSETS;c1++) {
205 const char *name = charset_name((charset_t)c1);
207 conv_handles[c1][CH_UCS2] = atalk_iconv_open( charset_name(CH_UCS2), name);
208 if (conv_handles[c1][CH_UCS2] == (atalk_iconv_t)-1) {
209 LOG(log_error, logtype_default, "Required conversion from %s to %s not supported",
210 name, charset_name(CH_UCS2));
211 conv_handles[c1][CH_UCS2] = NULL;
214 conv_handles[CH_UCS2][c1] = atalk_iconv_open( name, charset_name(CH_UCS2));
215 if (conv_handles[CH_UCS2][c1] == (atalk_iconv_t)-1) {
216 LOG(log_error, logtype_default, "Required conversion from %s to %s not supported",
217 charset_name(CH_UCS2), name);
218 conv_handles[CH_UCS2][c1] = NULL;
221 charsets[c1] = get_charset_functions (c1);
226 * Convert string from one encoding to another, making error checking etc
228 * @param src pointer to source string (multibyte or singlebyte)
229 * @param srclen length of the source string in bytes
230 * @param dest pointer to destination string (multibyte or singlebyte)
231 * @param destlen maximal length allowed for string
232 * @returns the number of bytes occupied in the destination
234 static size_t convert_string_internal(charset_t from, charset_t to,
235 void const *src, size_t srclen,
236 void *dest, size_t destlen)
240 const char* inbuf = (const char*)src;
241 char* outbuf = (char*)dest;
242 char* o_save = outbuf;
243 atalk_iconv_t descriptor;
245 if (srclen == (size_t)-1)
246 srclen = strlen(src)+1;
248 lazy_initialize_conv();
250 descriptor = conv_handles[from][to];
252 if (descriptor == (atalk_iconv_t)-1 || descriptor == (atalk_iconv_t)0) {
258 retval = atalk_iconv(descriptor, &inbuf, &i_len, &outbuf, &o_len);
259 if(retval==(size_t)-1) {
260 const char *reason="unknown error";
263 reason="Incomplete multibyte sequence";
266 reason="No more room";
269 reason="Illegal multibyte sequence";
272 LOG(log_debug, logtype_default,"Conversion error: %s",reason);
276 /* Terminate the string */
277 if (to == CH_UCS2 && destlen-o_len >= 2) {
278 o_save[destlen-o_len] = 0;
279 o_save[destlen-o_len+1] = 0;
281 else if ( to != CH_UCS2 && destlen-o_len > 0 )
282 o_save[destlen-o_len] = 0;
284 /* FIXME: what should we do here, string *might* be unterminated. E2BIG? */
287 return destlen-o_len;
291 size_t convert_string(charset_t from, charset_t to,
292 void const *src, size_t srclen,
293 void *dest, size_t destlen)
297 ucs2_t buffer[MAXPATHLEN];
298 ucs2_t buffer2[MAXPATHLEN];
301 lazy_initialize_conv();
303 /* convert from_set to UCS2 */
304 if ((size_t)(-1) == ( o_len = convert_string_internal( from, CH_UCS2, src, srclen,
305 (char*) buffer, sizeof(buffer))) ) {
306 LOG(log_error, logtype_default, "Conversion failed ( %s to CH_UCS2 )", charset_name(from));
310 /* Do pre/decomposition */
311 if ( ((!(charsets[to]) || !(charsets[to]->flags & CHARSET_DECOMPOSED)) &&
312 (!(charsets[from]) || (charsets[from]->flags & CHARSET_DECOMPOSED))))
314 if ((charsets[to] && charsets[to]->flags & CHARSET_DECOMPOSED) )
317 i_len = sizeof(buffer2);
320 switch (composition) {
326 if ( (size_t)-1 == (i_len = precompose_w(buffer, o_len, u, &i_len)) )
330 if ( (size_t)-1 == (i_len = decompose_w(buffer, o_len, u, &i_len)) )
335 /* Convert UCS2 to to_set */
336 if ((size_t)(-1) == ( o_len = convert_string_internal( CH_UCS2, to, (char*) u, i_len, dest, destlen)) ) {
337 LOG(log_error, logtype_default, "Conversion failed (CH_UCS2 to %s):%s", charset_name(to), strerror(errno));
347 * Convert between character sets, allocating a new buffer for the result.
349 * @param srclen length of source buffer.
350 * @param dest always set at least to NULL
351 * @note -1 is not accepted for srclen.
353 * @returns Size in bytes of the converted string; or -1 in case of error.
356 static size_t convert_string_allocate_internal(charset_t from, charset_t to,
357 void const *src, size_t srclen, char **dest)
359 size_t i_len, o_len, destlen;
361 const char *inbuf = (const char *)src;
362 char *outbuf = NULL, *ob = NULL;
363 atalk_iconv_t descriptor;
367 if (src == NULL || srclen == (size_t)-1)
370 lazy_initialize_conv();
372 descriptor = conv_handles[from][to];
374 if (descriptor == (atalk_iconv_t)-1 || descriptor == (atalk_iconv_t)0) {
375 /* conversion not supported, return -1*/
376 LOG(log_debug, logtype_default, "convert_string_allocate: conversion not supported!\n");
380 destlen = MAX(srclen, 512);
382 destlen = destlen * 2;
383 ob = (char *)realloc(ob, destlen);
385 LOG(log_debug, logtype_default,"convert_string_allocate: realloc failed!\n");
391 inbuf = src; /* this restarts the whole conversion if buffer needed to be increased */
394 retval = atalk_iconv(descriptor,
397 if(retval == (size_t)-1) {
398 const char *reason="unknown error";
401 reason="Incomplete multibyte sequence";
406 reason="Illegal multibyte sequence";
409 LOG(log_debug, logtype_default,"Conversion error: %s(%s)",reason,inbuf);
414 destlen = destlen - o_len;
416 /* Terminate the string */
417 if (to == CH_UCS2 && o_len >= 2) {
420 *dest = (char *)realloc(ob,destlen+2);
422 else if ( to != CH_UCS2 && o_len > 0 ) {
424 *dest = (char *)realloc(ob,destlen+1);
427 goto convert; /* realloc */
430 if (destlen && !*dest) {
431 LOG(log_debug, logtype_default, "convert_string_allocate: out of memory!\n");
440 size_t convert_string_allocate(charset_t from, charset_t to,
441 void const *src, size_t srclen,
446 ucs2_t buffer[MAXPATHLEN];
447 ucs2_t buffer2[MAXPATHLEN];
450 lazy_initialize_conv();
454 /* convert from_set to UCS2 */
455 if ((size_t)(-1) == ( o_len = convert_string_internal( from, CH_UCS2, src, srclen,
456 buffer, sizeof(buffer))) ) {
457 LOG(log_error, logtype_default, "Conversion failed ( %s to CH_UCS2 )", charset_name(from));
461 /* Do pre/decomposition */
462 if ( ((!(charsets[to]) || !(charsets[to]->flags & CHARSET_DECOMPOSED)) &&
463 (!(charsets[from]) || (charsets[from]->flags & CHARSET_DECOMPOSED))))
465 if ((charsets[to] && charsets[to]->flags & CHARSET_DECOMPOSED) )
468 i_len = sizeof(buffer2);
471 switch (composition) {
477 if ( (size_t)-1 == (i_len = precompose_w(buffer, o_len, u, &i_len)) )
481 if ( (size_t)-1 == (i_len = decompose_w(buffer, o_len, u, &i_len)) )
486 /* Convert UCS2 to to_set */
487 if ((size_t)(-1) == ( o_len = convert_string_allocate_internal( CH_UCS2, to, (char*)u, i_len, dest)) )
488 LOG(log_error, logtype_default, "Conversion failed (CH_UCS2 to %s):%s", charset_name(to), strerror(errno));
494 size_t charset_strupper(charset_t ch, const char *src, size_t srclen, char *dest, size_t destlen)
499 size = convert_string_allocate_internal(ch, CH_UCS2, src, srclen,
501 if (size == (size_t)-1) {
505 if (!strupper_w((ucs2_t *)buffer) && (dest == src)) {
510 size = convert_string_internal(CH_UCS2, ch, buffer, size, dest, destlen);
515 size_t charset_strlower(charset_t ch, const char *src, size_t srclen, char *dest, size_t destlen)
520 size = convert_string_allocate_internal(ch, CH_UCS2, src, srclen,
522 if (size == (size_t)-1) {
526 if (!strlower_w((ucs2_t *)buffer) && (dest == src)) {
531 size = convert_string_internal(CH_UCS2, ch, buffer, size, dest, destlen);
537 size_t unix_strupper(const char *src, size_t srclen, char *dest, size_t destlen)
539 return charset_strupper( CH_UNIX, src, srclen, dest, destlen);
542 size_t unix_strlower(const char *src, size_t srclen, char *dest, size_t destlen)
544 return charset_strlower( CH_UNIX, src, srclen, dest, destlen);
547 size_t utf8_strupper(const char *src, size_t srclen, char *dest, size_t destlen)
549 return charset_strupper( CH_UTF8, src, srclen, dest, destlen);
552 size_t utf8_strlower(const char *src, size_t srclen, char *dest, size_t destlen)
554 return charset_strlower( CH_UTF8, src, srclen, dest, destlen);
558 * Copy a string from a charset_t char* src to a UCS2 destination, allocating a buffer
560 * @param dest always set at least to NULL
562 * @returns The number of bytes occupied by the string in the destination
563 * or -1 in case of error.
566 size_t charset_to_ucs2_allocate(charset_t ch, ucs2_t **dest, const char *src)
568 size_t src_len = strlen(src);
571 return convert_string_allocate(ch, CH_UCS2, src, src_len, (char**) dest);
575 * Copy a string from a charset_t char* src to a UTF-8 destination, allocating a buffer
577 * @param dest always set at least to NULL
579 * @returns The number of bytes occupied by the string in the destination
582 size_t charset_to_utf8_allocate(charset_t ch, char **dest, const char *src)
584 size_t src_len = strlen(src);
587 return convert_string_allocate(ch, CH_UTF8, src, src_len, dest);
591 * Copy a string from a UCS2 src to a unix char * destination, allocating a buffer
593 * @param dest always set at least to NULL
595 * @returns The number of bytes occupied by the string in the destination
598 size_t ucs2_to_charset(charset_t ch, const ucs2_t *src, char *dest, size_t destlen)
600 size_t src_len = (strlen_w(src)) * sizeof(ucs2_t);
601 return convert_string(CH_UCS2, ch, src, src_len, dest, destlen);
605 size_t ucs2_to_charset_allocate(charset_t ch, char **dest, const ucs2_t *src)
607 size_t src_len = (strlen_w(src)) * sizeof(ucs2_t);
609 return convert_string_allocate(CH_UCS2, ch, src, src_len, dest);
613 * Copy a string from a UTF-8 src to a unix char * destination, allocating a buffer
615 * @param dest always set at least to NULL
617 * @returns The number of bytes occupied by the string in the destination
620 size_t utf8_to_charset_allocate(charset_t ch, char **dest, const char *src)
622 size_t src_len = strlen(src);
624 return convert_string_allocate(CH_UTF8, ch, src, src_len, dest);
627 size_t charset_precompose ( charset_t ch, char * src, size_t inlen, char * dst, size_t outlen)
630 ucs2_t u[MAXPATHLEN];
634 if ((size_t)(-1) == (len = convert_string_allocate_internal(ch, CH_UCS2, src, inlen, &buffer)) )
639 if ( (size_t)-1 == (ilen = precompose_w((ucs2_t *)buffer, len, u, &ilen)) ) {
644 if ((size_t)(-1) == (len = convert_string_internal( CH_UCS2, ch, (char*)u, ilen, dst, outlen)) ) {
654 size_t charset_decompose ( charset_t ch, char * src, size_t inlen, char * dst, size_t outlen)
657 ucs2_t u[MAXPATHLEN];
661 if ((size_t)(-1) == (len = convert_string_allocate_internal(ch, CH_UCS2, src, inlen, &buffer)) )
666 if ( (size_t)-1 == (ilen = decompose_w((ucs2_t *)buffer, len, u, &ilen)) ) {
671 if ((size_t)(-1) == (len = convert_string_internal( CH_UCS2, ch, (char*)u, ilen, dst, outlen)) ) {
681 size_t utf8_precompose ( char * src, size_t inlen, char * dst, size_t outlen)
683 return charset_precompose ( CH_UTF8, src, inlen, dst, outlen);
686 size_t utf8_decompose ( char * src, size_t inlen, char * dst, size_t outlen)
688 return charset_decompose ( CH_UTF8, src, inlen, dst, outlen);
691 static char debugbuf[ MAXPATHLEN +1 ];
692 char * debug_out ( char * seq, size_t len)
698 p = (unsigned char*) seq;
701 for ( i = 0; i<=(len-1); i++)
703 sprintf(q, "%2.2x.", *p);
713 * Convert from MB to UCS2 charset
715 * CONV_UNESCAPEHEX: ':XX' will be converted to an UCS2 character
716 * CONV_IGNORE: return the first convertable characters.
718 * This will *not* work if the destination charset is not multibyte, i.e. UCS2->UCS2 will fail
719 * The (un)escape scheme is not compatible to the old cap style escape. This is bad, we need it
720 * for e.g. HFS cdroms.
723 static size_t pull_charset_flags (charset_t from_set, charset_t cap_charset, char* src, size_t srclen, char* dest, size_t destlen, u_int16_t *flags)
725 size_t i_len, o_len, hlen;
726 size_t retval, j = 0;
727 const char* inbuf = (const char*)src;
728 char* outbuf = (char*)dest;
729 atalk_iconv_t descriptor;
730 atalk_iconv_t descriptor_cap;
735 if (srclen == (size_t)-1)
736 srclen = strlen(src)+1;
738 lazy_initialize_conv();
740 descriptor = conv_handles[from_set][CH_UCS2];
741 descriptor_cap = conv_handles[cap_charset][CH_UCS2];
743 if (descriptor == (atalk_iconv_t)-1 || descriptor == (atalk_iconv_t)0) {
752 if ( flags && (*flags & CONV_UNESCAPEHEX)) {
753 if ( NULL != (s = strchr ( inbuf, ':'))) {
754 j = i_len - (s - inbuf);
755 if ( 0 == (i_len = (s - inbuf)))
760 retval = atalk_iconv(descriptor, &inbuf, &i_len, &outbuf, &o_len);
761 if(retval==(size_t)-1) {
762 if (errno == EILSEQ && flags && (*flags & CONV_IGNORE)) {
763 *flags |= CONV_REQMANGLE;
764 return destlen-o_len;
771 if (j && flags && (*flags & CONV_UNESCAPEHEX )) {
772 /* we're at the start on an hex encoded ucs2 char */
778 isxdigit( *(inbuf+1)) && isxdigit( *(inbuf+2)) ) {
780 while ( *inbuf == ':' && j >=3 &&
781 isxdigit( *(inbuf+1)) && isxdigit( *(inbuf+2)) ) {
783 h[hlen] = hextoint( *inbuf ) << 4;
785 h[hlen++] |= hextoint( *inbuf );
789 h_buf = (const char*) h;
790 if ((size_t) -1 == (retval = atalk_iconv(descriptor_cap, &h_buf, &hlen, &outbuf, &o_len)) ) {
791 if (errno == EILSEQ && CHECK_FLAGS(flags, CONV_IGNORE)) {
792 *flags |= CONV_REQMANGLE;
793 return destlen-o_len;
801 /* We have an invalid :xx sequence */
802 if (CHECK_FLAGS(flags, CONV_IGNORE)) {
803 *flags |= CONV_REQMANGLE;
804 return destlen-o_len;
814 goto conversion_loop;
819 return destlen-o_len;
823 * Convert from UCS2 to MB charset
825 * CONV_ESCAPEDOTS: escape leading dots
826 * CONV_ESCAPEHEX: unconvertable characters and '/' will be escaped to :XX
827 * CONV_IGNORE: unconvertable characters will be replaced with '_'
829 * CONV_IGNORE and CONV_ESCAPEHEX can't work together. Should we check this ?
830 * This will *not* work if the destination charset is not multibyte, i.e. UCS2->UCS2 will fail
831 * The escape scheme is not compatible to the old cap style escape. This is bad, we need it
832 * for e.g. HFS cdroms.
836 static size_t push_charset_flags (charset_t to_set, charset_t cap_set, char* src, size_t srclen, char* dest, size_t destlen, u_int16_t *flags)
838 size_t i_len, o_len, i;
839 size_t retval, j = 0;
840 const char* inbuf = (const char*)src;
841 char* outbuf = (char*)dest;
842 atalk_iconv_t descriptor;
844 char *buf, *buf_save;
847 lazy_initialize_conv();
849 descriptor = conv_handles[CH_UCS2][to_set];
851 if (descriptor == (atalk_iconv_t)-1 || descriptor == (atalk_iconv_t)0) {
859 if ( SVAL(inbuf,0) == 0x002e && flags && (*flags & CONV_ESCAPEDOTS)) { /* 0x002e = . */
871 if (flags) *flags |= CONV_REQESCAPE;
875 if ( flags && (*flags & CONV_ESCAPEHEX)) {
876 for ( i = 0; i < i_len; i+=2) {
877 if ( SVAL((inbuf+i),0) == 0x002f) { /* 0x002f = / */
879 if ( 0 == ( i_len = i))
882 } else if ( SVAL(inbuf+i,0) == 0x003a) { /* 0x003a = : */
889 retval = atalk_iconv(descriptor, &inbuf, &i_len, &outbuf, &o_len);
890 if (retval==(size_t)-1) {
891 if (errno == EILSEQ && CHECK_FLAGS(flags, CONV_IGNORE)) {
892 *flags |= CONV_REQMANGLE;
893 return destlen -o_len;
895 else if ( errno == EILSEQ && flags && (*flags & CONV_ESCAPEHEX)) {
900 if ((size_t) -1 == (buflen = convert_string_allocate_internal(CH_UCS2, cap_set, inbuf, 2, &buf)) )
909 *outbuf++ = hexdig[ ( *buf & 0xf0 ) >> 4 ];
910 *outbuf++ = hexdig[ *buf & 0x0f ];
919 if (flags) *flags |= CONV_REQESCAPE;
921 goto conversion_loop;
928 if (j && flags && (*flags & CONV_ESCAPEHEX)) {
933 o_save[destlen -o_len] = ':';
934 o_save[destlen -o_len+1] = '2';
935 o_save[destlen -o_len+2] = 'f';
942 goto conversion_loop;
944 return destlen -o_len;
947 size_t convert_charset ( charset_t from_set, charset_t to_set, charset_t cap_charset, char* src, size_t src_len, char* dest, size_t dest_len, u_int16_t *flags)
951 ucs2_t buffer[MAXPATHLEN];
952 ucs2_t buffer2[MAXPATHLEN];
955 lazy_initialize_conv();
957 /* convert from_set to UCS2 */
958 if ((size_t)(-1) == ( o_len = pull_charset_flags( from_set, cap_charset, src, src_len,
959 (char *) buffer, sizeof(buffer), flags)) ) {
960 LOG(log_error, logtype_default, "Conversion failed ( %s to CH_UCS2 )", charset_name(from_set));
967 /* Do pre/decomposition */
968 if (CHECK_FLAGS(flags, CONV_PRECOMPOSE) ||
969 ((!(charsets[to_set]) || !(charsets[to_set]->flags & CHARSET_DECOMPOSED)) &&
970 (!(charsets[from_set]) || (charsets[from_set]->flags & CHARSET_DECOMPOSED))))
972 if (CHECK_FLAGS(flags, CONV_DECOMPOSE) || (charsets[to_set] && charsets[to_set]->flags & CHARSET_DECOMPOSED) )
975 i_len = sizeof(buffer2);
978 switch (composition) {
984 if ( (size_t)-1 == (i_len = precompose_w(buffer, o_len, u, &i_len)) )
988 if ( (size_t)-1 == (i_len = decompose_w(buffer, o_len, u, &i_len)) )
993 /* Do case conversions */
994 if (CHECK_FLAGS(flags, CONV_TOUPPER)) {
998 if (CHECK_FLAGS(flags, CONV_TOLOWER)) {
1000 return (size_t)(-1);
1003 /* Convert UCS2 to to_set */
1004 if ((size_t)(-1) == ( o_len = push_charset_flags( to_set, cap_charset, (char *)u, i_len, dest, dest_len, flags )) ) {
1005 LOG(log_error, logtype_default,
1006 "Conversion failed (CH_UCS2 to %s):%s", charset_name(to_set), strerror(errno));