1 /* Character set conversion with error handling.
2 Copyright (C) 2001-2008 Free Software Foundation, Inc.
3 Written by Bruno Haible and Simon Josefsson.
5 This program is free software: you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
21 #include "striconveh.h"
33 #include "c-strcase.h"
34 #include "c-strcaseeq.h"
37 # define SIZE_MAX ((size_t) -1)
43 /* The caller must provide CD, CD1, CD2, not just CD, because when a conversion
44 error occurs, we may have to determine the Unicode representation of the
45 inconvertible character. */
47 /* iconv_carefully is like iconv, except that it stops as soon as it encounters
48 a conversion error, and it returns in *INCREMENTED a boolean telling whether
49 it has incremented the input pointers past the error location. */
50 # if !defined _LIBICONV_VERSION && !defined __GLIBC__
51 /* Irix iconv() inserts a NUL byte if it cannot convert.
52 NetBSD iconv() inserts a question mark if it cannot convert.
53 Only GNU libiconv and GNU libc are known to prefer to fail rather
54 than doing a lossy conversion. */
56 iconv_carefully (iconv_t cd,
57 const char **inbuf, size_t *inbytesleft,
58 char **outbuf, size_t *outbytesleft,
61 const char *inptr = *inbuf;
62 const char *inptr_end = inptr + *inbytesleft;
63 char *outptr = *outbuf;
64 size_t outsize = *outbytesleft;
65 const char *inptr_before;
75 for (insize = 1; inptr + insize <= inptr_end; insize++)
78 (ICONV_CONST char **) &inptr, &insize,
80 if (!(res == (size_t)(-1) && errno == EINVAL))
82 /* iconv can eat up a shift sequence but give EINVAL while attempting
83 to convert the first character. E.g. libiconv does this. */
84 if (inptr > inptr_before)
94 *outbytesleft = outsize;
97 while (res == 0 && inptr < inptr_end);
100 *inbytesleft = inptr_end - inptr;
101 if (res != (size_t)(-1) && res > 0)
103 /* iconv() has already incremented INPTR. We cannot go back to a
104 previous INPTR, otherwise the state inside CD would become invalid,
105 if FROM_CODESET is a stateful encoding. So, tell the caller that
106 *INBUF has already been incremented. */
107 *incremented = (inptr > inptr_before);
113 *incremented = false;
118 # define iconv_carefully(cd, inbuf, inbytesleft, outbuf, outbytesleft, incremented) \
119 (*(incremented) = false, \
120 iconv (cd, (ICONV_CONST char **) (inbuf), inbytesleft, outbuf, outbytesleft))
123 /* iconv_carefully_1 is like iconv_carefully, except that it stops after
124 converting one character or one shift sequence. */
126 iconv_carefully_1 (iconv_t cd,
127 const char **inbuf, size_t *inbytesleft,
128 char **outbuf, size_t *outbytesleft,
131 const char *inptr_before = *inbuf;
132 const char *inptr = inptr_before;
133 const char *inptr_end = inptr_before + *inbytesleft;
134 char *outptr = *outbuf;
135 size_t outsize = *outbytesleft;
136 size_t res = (size_t)(-1);
139 for (insize = 1; inptr_before + insize <= inptr_end; insize++)
141 inptr = inptr_before;
143 (ICONV_CONST char **) &inptr, &insize,
145 if (!(res == (size_t)(-1) && errno == EINVAL))
147 /* iconv can eat up a shift sequence but give EINVAL while attempting
148 to convert the first character. E.g. libiconv does this. */
149 if (inptr > inptr_before)
157 *inbytesleft = inptr_end - inptr;
158 # if !defined _LIBICONV_VERSION && !defined __GLIBC__
159 /* Irix iconv() inserts a NUL byte if it cannot convert.
160 NetBSD iconv() inserts a question mark if it cannot convert.
161 Only GNU libiconv and GNU libc are known to prefer to fail rather
162 than doing a lossy conversion. */
163 if (res != (size_t)(-1) && res > 0)
165 /* iconv() has already incremented INPTR. We cannot go back to a
166 previous INPTR, otherwise the state inside CD would become invalid,
167 if FROM_CODESET is a stateful encoding. So, tell the caller that
168 *INBUF has already been incremented. */
169 *incremented = (inptr > inptr_before);
175 if (res != (size_t)(-1))
178 *outbytesleft = outsize;
180 *incremented = false;
184 /* utf8conv_carefully is like iconv, except that
185 - it converts from UTF-8 to UTF-8,
186 - it stops as soon as it encounters a conversion error, and it returns
187 in *INCREMENTED a boolean telling whether it has incremented the input
188 pointers past the error location,
189 - if one_character_only is true, it stops after converting one
192 utf8conv_carefully (bool one_character_only,
193 const char **inbuf, size_t *inbytesleft,
194 char **outbuf, size_t *outbytesleft,
197 const char *inptr = *inbuf;
198 size_t insize = *inbytesleft;
199 char *outptr = *outbuf;
200 size_t outsize = *outbytesleft;
210 n = u8_mbtoucr (&uc, (const uint8_t *) inptr, insize);
213 errno = (n == -2 ? EINVAL : EILSEQ);
214 n = u8_mbtouc (&uc, (const uint8_t *) inptr, insize);
225 *incremented = false;
228 m = u8_uctomb ((uint8_t *) outptr, uc, outsize);
233 *incremented = false;
248 while (!one_character_only && insize > 0);
251 *inbytesleft = insize;
253 *outbytesleft = outsize;
258 mem_cd_iconveh_internal (const char *src, size_t srclen,
259 iconv_t cd, iconv_t cd1, iconv_t cd2,
260 enum iconv_ilseq_handler handler,
263 char **resultp, size_t *lengthp)
265 /* When a conversion error occurs, we cannot start using CD1 and CD2 at
266 this point: FROM_CODESET may be a stateful encoding like ISO-2022-KR.
267 Instead, we have to start afresh from the beginning of SRC. */
268 /* Use a temporary buffer, so that for small strings, a single malloc()
269 call will be sufficient. */
270 # define tmpbufsize 4096
271 /* The alignment is needed when converting e.g. to glibc's WCHAR_T or
272 libiconv's UCS-4-INTERNAL encoding. */
273 union { unsigned int align; char buf[tmpbufsize]; } tmp;
274 # define tmpbuf tmp.buf
276 char *initial_result;
280 size_t last_length = (size_t)(-1); /* only needed if offsets != NULL */
282 if (*resultp != NULL && *lengthp >= sizeof (tmpbuf))
284 initial_result = *resultp;
285 allocated = *lengthp;
289 initial_result = tmpbuf;
290 allocated = sizeof (tmpbuf);
292 result = initial_result;
294 /* Test whether a direct conversion is possible at all. */
295 if (cd == (iconv_t)(-1))
302 for (i = 0; i < srclen; i++)
303 offsets[i] = (size_t)(-1);
305 last_length = (size_t)(-1);
309 /* First, try a direct conversion, and see whether a conversion error
312 const char *inptr = src;
313 size_t insize = srclen;
315 /* Avoid glibc-2.1 bug and Solaris 2.7-2.9 bug. */
316 # if defined _LIBICONV_VERSION \
317 || !((__GLIBC__ - 0 == 2 && __GLIBC_MINOR__ - 0 <= 1) || defined __sun)
318 /* Set to the initial state. */
319 iconv (cd, NULL, NULL, NULL, NULL);
324 char *outptr = result + length;
325 size_t outsize = allocated - extra_alloc - length;
332 if (length != last_length) /* ensure that offset[] be increasing */
334 offsets[inptr - src] = length;
335 last_length = length;
337 res = iconv_carefully_1 (cd,
343 /* Use iconv_carefully instead of iconv here, because:
344 - If TO_CODESET is UTF-8, we can do the error handling in this
345 loop, no need for a second loop,
346 - With iconv() implementations other than GNU libiconv and GNU
347 libc, if we use iconv() in a big swoop, checking for an E2BIG
348 return, we lose the number of irreversible conversions. */
349 res = iconv_carefully (cd,
354 length = outptr - result;
355 grow = (length + extra_alloc > allocated / 2);
356 if (res == (size_t)(-1))
360 else if (errno == EINVAL)
362 else if (errno == EILSEQ && handler != iconveh_error)
364 if (cd2 == (iconv_t)(-1))
366 /* TO_CODESET is UTF-8. */
367 /* Error handling can produce up to 1 byte of output. */
368 if (length + 1 + extra_alloc > allocated)
372 allocated = 2 * allocated;
373 if (length + 1 + extra_alloc > allocated)
375 if (result == initial_result)
376 memory = (char *) malloc (allocated);
378 memory = (char *) realloc (result, allocated);
381 if (result != initial_result)
386 if (result == initial_result)
387 memcpy (memory, initial_result, length);
391 /* The input is invalid in FROM_CODESET. Eat up one byte
392 and emit a question mark. */
400 result[length] = '?';
408 if (result != initial_result)
410 int saved_errno = errno;
423 allocated = 2 * allocated;
424 if (result == initial_result)
425 memory = (char *) malloc (allocated);
427 memory = (char *) realloc (result, allocated);
430 if (result != initial_result)
435 if (result == initial_result)
436 memcpy (memory, initial_result, length);
442 /* Now get the conversion state back to the initial state.
443 But avoid glibc-2.1 bug and Solaris 2.7 bug. */
444 #if defined _LIBICONV_VERSION \
445 || !((__GLIBC__ == 2 && __GLIBC_MINOR__ <= 1) || defined __sun)
448 char *outptr = result + length;
449 size_t outsize = allocated - extra_alloc - length;
452 res = iconv (cd, NULL, NULL, &outptr, &outsize);
453 length = outptr - result;
454 if (res == (size_t)(-1))
460 allocated = 2 * allocated;
461 if (result == initial_result)
462 memory = (char *) malloc (allocated);
464 memory = (char *) realloc (result, allocated);
467 if (result != initial_result)
472 if (result == initial_result)
473 memcpy (memory, initial_result, length);
478 if (result != initial_result)
480 int saved_errno = errno;
492 /* The direct conversion succeeded. */
496 /* The direct conversion failed.
497 Use a conversion through UTF-8. */
502 for (i = 0; i < srclen; i++)
503 offsets[i] = (size_t)(-1);
505 last_length = (size_t)(-1);
509 const bool slowly = (offsets != NULL || handler == iconveh_error);
510 # define utf8bufsize 4096 /* may also be smaller or larger than tmpbufsize */
511 char utf8buf[utf8bufsize + 1];
513 const char *in1ptr = src;
514 size_t in1size = srclen;
515 bool do_final_flush1 = true;
516 bool do_final_flush2 = true;
518 /* Avoid glibc-2.1 bug and Solaris 2.7-2.9 bug. */
519 # if defined _LIBICONV_VERSION \
520 || !((__GLIBC__ - 0 == 2 && __GLIBC_MINOR__ - 0 <= 1) || defined __sun)
521 /* Set to the initial state. */
522 if (cd1 != (iconv_t)(-1))
523 iconv (cd1, NULL, NULL, NULL, NULL);
524 if (cd2 != (iconv_t)(-1))
525 iconv (cd2, NULL, NULL, NULL, NULL);
528 while (in1size > 0 || do_final_flush1 || utf8len > 0 || do_final_flush2)
530 char *out1ptr = utf8buf + utf8len;
531 size_t out1size = utf8bufsize - utf8len;
536 /* Conversion step 1: from FROM_CODESET to UTF-8. */
540 && length != last_length) /* ensure that offset[] be increasing */
542 offsets[in1ptr - src] = length;
543 last_length = length;
545 if (cd1 != (iconv_t)(-1))
548 res1 = iconv_carefully_1 (cd1,
553 res1 = iconv_carefully (cd1,
560 /* FROM_CODESET is UTF-8. */
561 res1 = utf8conv_carefully (slowly,
567 else if (do_final_flush1)
569 /* Now get the conversion state of CD1 back to the initial state.
570 But avoid glibc-2.1 bug and Solaris 2.7 bug. */
571 # if defined _LIBICONV_VERSION \
572 || !((__GLIBC__ == 2 && __GLIBC_MINOR__ <= 1) || defined __sun)
573 if (cd1 != (iconv_t)(-1))
574 res1 = iconv (cd1, NULL, NULL, &out1ptr, &out1size);
578 do_final_flush1 = false;
586 if (res1 == (size_t)(-1)
587 && !(errno == E2BIG || errno == EINVAL || errno == EILSEQ))
589 if (result != initial_result)
591 int saved_errno = errno;
597 if (res1 == (size_t)(-1)
598 && errno == EILSEQ && handler != iconveh_error)
600 /* The input is invalid in FROM_CODESET. Eat up one byte and
601 emit a question mark. Room for the question mark was allocated
602 at the end of utf8buf. */
610 utf8buf[utf8len++] = '?';
613 utf8len = out1ptr - utf8buf;
617 || utf8len > utf8bufsize / 2
618 || (res1 == (size_t)(-1) && errno1 == E2BIG))
620 /* Conversion step 2: from UTF-8 to TO_CODESET. */
621 const char *in2ptr = utf8buf;
622 size_t in2size = utf8len;
625 || (in1size == 0 && !do_final_flush1 && do_final_flush2))
627 char *out2ptr = result + length;
628 size_t out2size = allocated - extra_alloc - length;
635 if (cd2 != (iconv_t)(-1))
636 res2 = iconv_carefully (cd2,
641 /* TO_CODESET is UTF-8. */
642 res2 = utf8conv_carefully (false,
647 else /* in1size == 0 && !do_final_flush1
648 && in2size == 0 && do_final_flush2 */
650 /* Now get the conversion state of CD1 back to the initial
651 state. But avoid glibc-2.1 bug and Solaris 2.7 bug. */
652 # if defined _LIBICONV_VERSION \
653 || !((__GLIBC__ == 2 && __GLIBC_MINOR__ <= 1) || defined __sun)
654 if (cd2 != (iconv_t)(-1))
655 res2 = iconv (cd2, NULL, NULL, &out2ptr, &out2size);
659 do_final_flush2 = false;
663 length = out2ptr - result;
664 grow = (length + extra_alloc > allocated / 2);
665 if (res2 == (size_t)(-1))
669 else if (errno == EINVAL)
671 else if (errno == EILSEQ && handler != iconveh_error)
673 /* Error handling can produce up to 10 bytes of ASCII
674 output. But TO_CODESET may be UCS-2, UTF-16 or
675 UCS-4, so use CD2 here as well. */
685 if (u8_prev (&uc, (const uint8_t *) in2ptr,
686 (const uint8_t *) utf8buf)
695 n = u8_mbtouc_unsafe (&uc, (const uint8_t *) in2ptr,
701 if (handler == iconveh_escape_sequence)
703 static char hex[16] = "0123456789ABCDEF";
705 scratchbuf[scratchlen++] = '\\';
707 scratchbuf[scratchlen++] = 'u';
710 scratchbuf[scratchlen++] = 'U';
711 scratchbuf[scratchlen++] = hex[(uc>>28) & 15];
712 scratchbuf[scratchlen++] = hex[(uc>>24) & 15];
713 scratchbuf[scratchlen++] = hex[(uc>>20) & 15];
714 scratchbuf[scratchlen++] = hex[(uc>>16) & 15];
716 scratchbuf[scratchlen++] = hex[(uc>>12) & 15];
717 scratchbuf[scratchlen++] = hex[(uc>>8) & 15];
718 scratchbuf[scratchlen++] = hex[(uc>>4) & 15];
719 scratchbuf[scratchlen++] = hex[uc & 15];
729 if (cd2 != (iconv_t)(-1))
731 (ICONV_CONST char **) &inptr, &insize,
732 &out2ptr, &out2size);
735 /* TO_CODESET is UTF-8. */
736 if (out2size >= insize)
738 memcpy (out2ptr, inptr, insize);
751 length = out2ptr - result;
752 if (res == (size_t)(-1) && errno == E2BIG)
756 allocated = 2 * allocated;
757 if (length + 1 + extra_alloc > allocated)
759 if (result == initial_result)
760 memory = (char *) malloc (allocated);
762 memory = (char *) realloc (result, allocated);
765 if (result != initial_result)
770 if (result == initial_result)
771 memcpy (memory, initial_result, length);
775 out2ptr = result + length;
776 out2size = allocated - extra_alloc - length;
777 if (cd2 != (iconv_t)(-1))
779 (ICONV_CONST char **) &inptr,
781 &out2ptr, &out2size);
784 /* TO_CODESET is UTF-8. */
785 if (!(out2size >= insize))
787 memcpy (out2ptr, inptr, insize);
794 length = out2ptr - result;
796 # if !defined _LIBICONV_VERSION && !defined __GLIBC__
797 /* Irix iconv() inserts a NUL byte if it cannot convert.
798 NetBSD iconv() inserts a question mark if it cannot
800 Only GNU libiconv and GNU libc are known to prefer
801 to fail rather than doing a lossy conversion. */
802 if (res != (size_t)(-1) && res > 0)
808 if (res == (size_t)(-1))
810 /* Failure converting the ASCII replacement. */
811 if (result != initial_result)
813 int saved_errno = errno;
822 if (result != initial_result)
824 int saved_errno = errno;
832 || (in1size == 0 && !do_final_flush1 && do_final_flush2)))
838 allocated = 2 * allocated;
839 if (result == initial_result)
840 memory = (char *) malloc (allocated);
842 memory = (char *) realloc (result, allocated);
845 if (result != initial_result)
850 if (result == initial_result)
851 memcpy (memory, initial_result, length);
856 /* Move the remaining bytes to the beginning of utf8buf. */
858 memmove (utf8buf, in2ptr, in2size);
862 if (res1 == (size_t)(-1))
864 if (errno1 == EINVAL)
866 else if (errno1 == EILSEQ)
868 if (result != initial_result)
879 /* Now the final memory allocation. */
880 if (result == tmpbuf)
882 size_t memsize = length + extra_alloc;
885 memory = (char *) malloc (memsize > 0 ? memsize : 1);
888 memcpy (memory, tmpbuf, length);
897 else if (result != *resultp && length + extra_alloc < allocated)
899 /* Shrink the allocated memory if possible. */
900 size_t memsize = length + extra_alloc;
903 memory = (char *) realloc (result, memsize > 0 ? memsize : 1);
915 mem_cd_iconveh (const char *src, size_t srclen,
916 iconv_t cd, iconv_t cd1, iconv_t cd2,
917 enum iconv_ilseq_handler handler,
919 char **resultp, size_t *lengthp)
921 return mem_cd_iconveh_internal (src, srclen, cd, cd1, cd2, handler, 0,
922 offsets, resultp, lengthp);
926 str_cd_iconveh (const char *src,
927 iconv_t cd, iconv_t cd1, iconv_t cd2,
928 enum iconv_ilseq_handler handler)
930 /* For most encodings, a trailing NUL byte in the input will be converted
931 to a trailing NUL byte in the output. But not for UTF-7. So that this
932 function is usable for UTF-7, we have to exclude the NUL byte from the
933 conversion and add it by hand afterwards. */
936 int retval = mem_cd_iconveh_internal (src, strlen (src),
937 cd, cd1, cd2, handler, 1, NULL,
944 int saved_errno = errno;
951 /* Add the terminating NUL byte. */
952 result[length] = '\0';
960 mem_iconveh (const char *src, size_t srclen,
961 const char *from_codeset, const char *to_codeset,
962 enum iconv_ilseq_handler handler,
964 char **resultp, size_t *lengthp)
968 /* Nothing to convert. */
972 else if (offsets == NULL && c_strcasecmp (from_codeset, to_codeset) == 0)
976 if (*resultp != NULL && *lengthp >= srclen)
980 result = (char *) malloc (srclen);
987 memcpy (result, src, srclen);
1002 /* Avoid glibc-2.1 bug with EUC-KR. */
1003 # if (__GLIBC__ - 0 == 2 && __GLIBC_MINOR__ - 0 <= 1) && !defined _LIBICONV_VERSION
1004 if (c_strcasecmp (from_codeset, "EUC-KR") == 0
1005 || c_strcasecmp (to_codeset, "EUC-KR") == 0)
1012 cd = iconv_open (to_codeset, from_codeset);
1014 if (STRCASEEQ (from_codeset, "UTF-8", 'U','T','F','-','8',0,0,0,0))
1015 cd1 = (iconv_t)(-1);
1018 cd1 = iconv_open ("UTF-8", from_codeset);
1019 if (cd1 == (iconv_t)(-1))
1021 int saved_errno = errno;
1022 if (cd != (iconv_t)(-1))
1024 errno = saved_errno;
1029 if (STRCASEEQ (to_codeset, "UTF-8", 'U','T','F','-','8',0,0,0,0)
1030 # if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) || __GLIBC__ > 2 || _LIBICONV_VERSION >= 0x0105
1031 || c_strcasecmp (to_codeset, "UTF-8//TRANSLIT") == 0
1034 cd2 = (iconv_t)(-1);
1037 cd2 = iconv_open (to_codeset, "UTF-8");
1038 if (cd2 == (iconv_t)(-1))
1040 int saved_errno = errno;
1041 if (cd1 != (iconv_t)(-1))
1043 if (cd != (iconv_t)(-1))
1045 errno = saved_errno;
1052 retval = mem_cd_iconveh (src, srclen, cd, cd1, cd2, handler, offsets,
1057 /* Close cd, cd1, cd2, but preserve the errno from str_cd_iconv. */
1058 int saved_errno = errno;
1059 if (cd2 != (iconv_t)(-1))
1061 if (cd1 != (iconv_t)(-1))
1063 if (cd != (iconv_t)(-1))
1065 errno = saved_errno;
1069 if (cd2 != (iconv_t)(-1) && iconv_close (cd2) < 0)
1071 /* Return -1, but free the allocated memory, and while doing
1072 that, preserve the errno from iconv_close. */
1073 int saved_errno = errno;
1074 if (cd1 != (iconv_t)(-1))
1076 if (cd != (iconv_t)(-1))
1078 if (result != *resultp && result != NULL)
1080 errno = saved_errno;
1083 if (cd1 != (iconv_t)(-1) && iconv_close (cd1) < 0)
1085 /* Return -1, but free the allocated memory, and while doing
1086 that, preserve the errno from iconv_close. */
1087 int saved_errno = errno;
1088 if (cd != (iconv_t)(-1))
1090 if (result != *resultp && result != NULL)
1092 errno = saved_errno;
1095 if (cd != (iconv_t)(-1) && iconv_close (cd) < 0)
1097 /* Return -1, but free the allocated memory, and while doing
1098 that, preserve the errno from iconv_close. */
1099 int saved_errno = errno;
1100 if (result != *resultp && result != NULL)
1102 errno = saved_errno;
1110 /* This is a different error code than if iconv_open existed but didn't
1111 support from_codeset and to_codeset, so that the caller can emit
1112 an error message such as
1113 "iconv() is not supported. Installing GNU libiconv and
1114 then reinstalling this package would fix this." */
1122 str_iconveh (const char *src,
1123 const char *from_codeset, const char *to_codeset,
1124 enum iconv_ilseq_handler handler)
1126 if (*src == '\0' || c_strcasecmp (from_codeset, to_codeset) == 0)
1128 char *result = strdup (src);
1142 /* Avoid glibc-2.1 bug with EUC-KR. */
1143 # if (__GLIBC__ - 0 == 2 && __GLIBC_MINOR__ - 0 <= 1) && !defined _LIBICONV_VERSION
1144 if (c_strcasecmp (from_codeset, "EUC-KR") == 0
1145 || c_strcasecmp (to_codeset, "EUC-KR") == 0)
1152 cd = iconv_open (to_codeset, from_codeset);
1154 if (STRCASEEQ (from_codeset, "UTF-8", 'U','T','F','-','8',0,0,0,0))
1155 cd1 = (iconv_t)(-1);
1158 cd1 = iconv_open ("UTF-8", from_codeset);
1159 if (cd1 == (iconv_t)(-1))
1161 int saved_errno = errno;
1162 if (cd != (iconv_t)(-1))
1164 errno = saved_errno;
1169 if (STRCASEEQ (to_codeset, "UTF-8", 'U','T','F','-','8',0,0,0,0)
1170 # if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) || __GLIBC__ > 2 || _LIBICONV_VERSION >= 0x0105
1171 || c_strcasecmp (to_codeset, "UTF-8//TRANSLIT") == 0
1174 cd2 = (iconv_t)(-1);
1177 cd2 = iconv_open (to_codeset, "UTF-8");
1178 if (cd2 == (iconv_t)(-1))
1180 int saved_errno = errno;
1181 if (cd1 != (iconv_t)(-1))
1183 if (cd != (iconv_t)(-1))
1185 errno = saved_errno;
1190 result = str_cd_iconveh (src, cd, cd1, cd2, handler);
1194 /* Close cd, cd1, cd2, but preserve the errno from str_cd_iconv. */
1195 int saved_errno = errno;
1196 if (cd2 != (iconv_t)(-1))
1198 if (cd1 != (iconv_t)(-1))
1200 if (cd != (iconv_t)(-1))
1202 errno = saved_errno;
1206 if (cd2 != (iconv_t)(-1) && iconv_close (cd2) < 0)
1208 /* Return NULL, but free the allocated memory, and while doing
1209 that, preserve the errno from iconv_close. */
1210 int saved_errno = errno;
1211 if (cd1 != (iconv_t)(-1))
1213 if (cd != (iconv_t)(-1))
1216 errno = saved_errno;
1219 if (cd1 != (iconv_t)(-1) && iconv_close (cd1) < 0)
1221 /* Return NULL, but free the allocated memory, and while doing
1222 that, preserve the errno from iconv_close. */
1223 int saved_errno = errno;
1224 if (cd != (iconv_t)(-1))
1227 errno = saved_errno;
1230 if (cd != (iconv_t)(-1) && iconv_close (cd) < 0)
1232 /* Return NULL, but free the allocated memory, and while doing
1233 that, preserve the errno from iconv_close. */
1234 int saved_errno = errno;
1236 errno = saved_errno;
1242 /* This is a different error code than if iconv_open existed but didn't
1243 support from_codeset and to_codeset, so that the caller can emit
1244 an error message such as
1245 "iconv() is not supported. Installing GNU libiconv and
1246 then reinstalling this package would fix this." */