1 /* Character set conversion support for GDB.
3 Copyright (C) 2001, 2003, 2007-2012 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #include "gdb_assert.h"
24 #include "gdb_obstack.h"
26 #include "charset-list.h"
29 #include "arch-utils.h"
32 #include "gdb_string.h"
39 /* How GDB's character set support works
41 GDB has three global settings:
43 - The `current host character set' is the character set GDB should
44 use in talking to the user, and which (hopefully) the user's
45 terminal knows how to display properly. Most users should not
48 - The `current target character set' is the character set the
49 program being debugged uses.
51 - The `current target wide character set' is the wide character set
52 the program being debugged uses, that is, the encoding used for
55 There are commands to set each of these, and mechanisms for
56 choosing reasonable default values. GDB has a global list of
57 character sets that it can use as its host or target character
60 The header file `charset.h' declares various functions that
61 different pieces of GDB need to perform tasks like:
63 - printing target strings and characters to the user's terminal
64 (mostly target->host conversions),
66 - building target-appropriate representations of strings and
67 characters the user enters in expressions (mostly host->target
72 To avoid excessive code duplication and maintenance efforts,
73 GDB simply requires a capable iconv function. Users on platforms
74 without a suitable iconv can use the GNU iconv library. */
79 /* Provide a phony iconv that does as little as possible. Also,
80 arrange for there to be a single available character set. */
82 #undef GDB_DEFAULT_HOST_CHARSET
83 #define GDB_DEFAULT_HOST_CHARSET "ISO-8859-1"
84 #define GDB_DEFAULT_TARGET_CHARSET "ISO-8859-1"
85 #define GDB_DEFAULT_TARGET_WIDE_CHARSET "ISO-8859-1"
86 #undef DEFAULT_CHARSET_NAMES
87 #define DEFAULT_CHARSET_NAMES GDB_DEFAULT_HOST_CHARSET ,
92 #define iconv_open phony_iconv_open
94 #define iconv phony_iconv
96 #define iconv_close phony_iconv_close
99 #define ICONV_CONST const
101 /* Some systems don't have EILSEQ, so we define it here, but not as
102 EINVAL, because callers of `iconv' want to distinguish EINVAL and
103 EILSEQ. This is what iconv.h from libiconv does as well. Note
104 that wchar.h may also define EILSEQ, so this needs to be after we
105 include wchar.h, which happens in defs.h through gdb_wchar.h. */
107 #define EILSEQ ENOENT
111 phony_iconv_open (const char *to, const char *from)
113 /* We allow conversions from UTF-32BE, wchar_t, and the host charset.
114 We allow conversions to wchar_t and the host charset. */
115 if (strcmp (from, "UTF-32BE") && strcmp (from, "wchar_t")
116 && strcmp (from, GDB_DEFAULT_HOST_CHARSET))
118 if (strcmp (to, "wchar_t") && strcmp (to, GDB_DEFAULT_HOST_CHARSET))
121 /* Return 1 if we are converting from UTF-32BE, 0 otherwise. This is
122 used as a flag in calls to iconv. */
123 return !strcmp (from, "UTF-32BE");
127 phony_iconv_close (iconv_t arg)
133 phony_iconv (iconv_t utf_flag, const char **inbuf, size_t *inbytesleft,
134 char **outbuf, size_t *outbytesleft)
138 while (*inbytesleft >= 4)
143 for (j = 0; j < 4; ++j)
146 c += (*inbuf)[j] & 0xff;
161 if (*inbytesleft < 4)
169 /* In all other cases we simply copy input bytes to the
171 size_t amt = *inbytesleft;
173 if (amt > *outbytesleft)
175 memcpy (*outbuf, *inbuf, amt);
179 *outbytesleft -= amt;
188 /* The number of non-reversible conversions -- but they were all
197 /* The global lists of character sets and translations. */
200 #ifndef GDB_DEFAULT_TARGET_CHARSET
201 #define GDB_DEFAULT_TARGET_CHARSET "ISO-8859-1"
204 #ifndef GDB_DEFAULT_TARGET_WIDE_CHARSET
205 #define GDB_DEFAULT_TARGET_WIDE_CHARSET "UTF-32"
208 static const char *auto_host_charset_name = GDB_DEFAULT_HOST_CHARSET;
209 static const char *host_charset_name = "auto";
211 show_host_charset_name (struct ui_file *file, int from_tty,
212 struct cmd_list_element *c,
215 if (!strcmp (value, "auto"))
216 fprintf_filtered (file,
217 _("The host character set is \"auto; currently %s\".\n"),
218 auto_host_charset_name);
220 fprintf_filtered (file, _("The host character set is \"%s\".\n"), value);
223 static const char *target_charset_name = "auto";
225 show_target_charset_name (struct ui_file *file, int from_tty,
226 struct cmd_list_element *c, const char *value)
228 if (!strcmp (value, "auto"))
229 fprintf_filtered (file,
230 _("The target character set is \"auto; "
231 "currently %s\".\n"),
232 gdbarch_auto_charset (get_current_arch ()));
234 fprintf_filtered (file, _("The target character set is \"%s\".\n"),
238 static const char *target_wide_charset_name = "auto";
240 show_target_wide_charset_name (struct ui_file *file,
242 struct cmd_list_element *c,
245 if (!strcmp (value, "auto"))
246 fprintf_filtered (file,
247 _("The target wide character set is \"auto; "
248 "currently %s\".\n"),
249 gdbarch_auto_wide_charset (get_current_arch ()));
251 fprintf_filtered (file, _("The target wide character set is \"%s\".\n"),
255 static const char *default_charset_names[] =
257 DEFAULT_CHARSET_NAMES
261 static const char **charset_enum;
264 /* If the target wide character set has big- or little-endian
265 variants, these are the corresponding names. */
266 static const char *target_wide_charset_be_name;
267 static const char *target_wide_charset_le_name;
269 /* The architecture for which the BE- and LE-names are valid. */
270 static struct gdbarch *be_le_arch;
272 /* A helper function which sets the target wide big- and little-endian
273 character set names, if possible. */
276 set_be_le_names (struct gdbarch *gdbarch)
279 const char *target_wide;
281 if (be_le_arch == gdbarch)
283 be_le_arch = gdbarch;
285 target_wide_charset_le_name = NULL;
286 target_wide_charset_be_name = NULL;
288 target_wide = target_wide_charset_name;
289 if (!strcmp (target_wide, "auto"))
290 target_wide = gdbarch_auto_wide_charset (gdbarch);
292 len = strlen (target_wide);
293 for (i = 0; charset_enum[i]; ++i)
295 if (strncmp (target_wide, charset_enum[i], len))
297 if ((charset_enum[i][len] == 'B'
298 || charset_enum[i][len] == 'L')
299 && charset_enum[i][len + 1] == 'E'
300 && charset_enum[i][len + 2] == '\0')
302 if (charset_enum[i][len] == 'B')
303 target_wide_charset_be_name = charset_enum[i];
305 target_wide_charset_le_name = charset_enum[i];
310 /* 'Set charset', 'set host-charset', 'set target-charset', 'set
311 target-wide-charset', 'set charset' sfunc's. */
314 validate (struct gdbarch *gdbarch)
317 const char *host_cset = host_charset ();
318 const char *target_cset = target_charset (gdbarch);
319 const char *target_wide_cset = target_wide_charset_name;
321 if (!strcmp (target_wide_cset, "auto"))
322 target_wide_cset = gdbarch_auto_wide_charset (gdbarch);
324 desc = iconv_open (target_wide_cset, host_cset);
325 if (desc == (iconv_t) -1)
326 error (_("Cannot convert between character sets `%s' and `%s'"),
327 target_wide_cset, host_cset);
330 desc = iconv_open (target_cset, host_cset);
331 if (desc == (iconv_t) -1)
332 error (_("Cannot convert between character sets `%s' and `%s'"),
333 target_cset, host_cset);
336 /* Clear the cache. */
340 /* This is the sfunc for the 'set charset' command. */
342 set_charset_sfunc (char *charset, int from_tty,
343 struct cmd_list_element *c)
345 /* CAREFUL: set the target charset here as well. */
346 target_charset_name = host_charset_name;
347 validate (get_current_arch ());
350 /* 'set host-charset' command sfunc. We need a wrapper here because
351 the function needs to have a specific signature. */
353 set_host_charset_sfunc (char *charset, int from_tty,
354 struct cmd_list_element *c)
356 validate (get_current_arch ());
359 /* Wrapper for the 'set target-charset' command. */
361 set_target_charset_sfunc (char *charset, int from_tty,
362 struct cmd_list_element *c)
364 validate (get_current_arch ());
367 /* Wrapper for the 'set target-wide-charset' command. */
369 set_target_wide_charset_sfunc (char *charset, int from_tty,
370 struct cmd_list_element *c)
372 validate (get_current_arch ());
375 /* sfunc for the 'show charset' command. */
377 show_charset (struct ui_file *file, int from_tty,
378 struct cmd_list_element *c,
381 show_host_charset_name (file, from_tty, c, host_charset_name);
382 show_target_charset_name (file, from_tty, c, target_charset_name);
383 show_target_wide_charset_name (file, from_tty, c,
384 target_wide_charset_name);
388 /* Accessor functions. */
393 if (!strcmp (host_charset_name, "auto"))
394 return auto_host_charset_name;
395 return host_charset_name;
399 target_charset (struct gdbarch *gdbarch)
401 if (!strcmp (target_charset_name, "auto"))
402 return gdbarch_auto_charset (gdbarch);
403 return target_charset_name;
407 target_wide_charset (struct gdbarch *gdbarch)
409 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
411 set_be_le_names (gdbarch);
412 if (byte_order == BFD_ENDIAN_BIG)
414 if (target_wide_charset_be_name)
415 return target_wide_charset_be_name;
419 if (target_wide_charset_le_name)
420 return target_wide_charset_le_name;
423 if (!strcmp (target_wide_charset_name, "auto"))
424 return gdbarch_auto_wide_charset (gdbarch);
426 return target_wide_charset_name;
430 /* Host character set management. For the time being, we assume that
431 the host character set is some superset of ASCII. */
434 host_letter_to_control_character (char c)
441 /* Convert a host character, C, to its hex value. C must already have
442 been validated using isxdigit. */
445 host_hex_value (char c)
449 if (c >= 'a' && c <= 'f')
451 gdb_assert (c >= 'A' && c <= 'F');
456 /* Public character management functions. */
458 /* A cleanup function which is run to close an iconv descriptor. */
461 cleanup_iconv (void *p)
464 iconv_close (*descp);
468 convert_wchar (gdb_wchar_t **pinp, size_t *pinleft, char **poutp, size_t *poutleft)
470 char tmp[MB_CUR_MAX];
473 while (*pinleft >= sizeof(gdb_wchar_t))
475 r = wctomb(tmp, **pinp);
478 perror_with_name ("Internal error while converting character sets");
486 memcpy(*poutp, tmp, r);
490 *pinleft -= sizeof(gdb_wchar_t);
500 convert_between_encodings (const char *from, const char *to,
501 const gdb_byte *bytes, unsigned int num_bytes,
502 int width, struct obstack *output,
503 enum transliterations translit)
506 struct cleanup *cleanups;
509 unsigned int space_request;
512 /* Often, the host and target charsets will be the same. */
513 if (!strcmp (from, to))
515 obstack_grow (output, bytes, num_bytes);
519 if (!strcmp (from, "wchar_t"))
521 if (strcmp (to, host_charset ()))
522 perror_with_name (_("Converting character sets"));
523 cleanups = NULL; /* silence gcc complaints */
528 desc = iconv_open (to, from);
529 if (desc == (iconv_t) -1)
530 perror_with_name (_("Converting character sets"));
531 cleanups = make_cleanup (cleanup_iconv, &desc);
535 inp = (char *) bytes;
537 space_request = num_bytes;
545 old_size = obstack_object_size (output);
546 obstack_blank (output, space_request);
548 outp = obstack_base (output) + old_size;
549 outleft = space_request;
552 r = convert_wchar((gdb_wchar_t **)(void *)&inp, &inleft, &outp, &outleft);
554 r = iconv (desc, (ICONV_CONST char **) &inp, &inleft, &outp, &outleft);
556 /* Now make sure that the object on the obstack only includes
557 bytes we have converted. */
558 obstack_blank (output, - (int) outleft);
560 if (r == (size_t) -1)
568 /* Invalid input sequence. */
569 if (translit == translit_none)
570 error (_("Could not convert character "
571 "to `%s' character set"), to);
573 /* We emit escape sequence for the bytes, skip them,
575 for (i = 0; i < width; ++i)
579 sprintf (octal, "\\%.3o", *inp & 0xff);
580 obstack_grow_str (output, octal);
589 /* We ran out of space in the output buffer. Make it
590 bigger next time around. */
595 /* Incomplete input sequence. FIXME: ought to report this
596 to the caller somehow. */
601 perror_with_name (_("Internal error while "
602 "converting character sets"));
608 do_cleanups (cleanups);
613 /* An iterator that returns host wchar_t's from a target string. */
614 struct wchar_iterator
616 /* The underlying iconv descriptor. */
619 /* The input string. This is updated as convert characters. */
621 /* The number of bytes remaining in the input. */
624 /* The width of an input character. */
627 /* The intermediate buffer */
632 /* The output byte. */
636 /* Create a new iterator. */
637 struct wchar_iterator *
638 make_wchar_iterator (const gdb_byte *input, size_t bytes,
639 const char *charset, size_t width)
641 struct wchar_iterator *result;
644 desc = iconv_open (host_charset (), charset);
645 if (desc == (iconv_t) -1)
646 perror_with_name (_("Converting character sets"));
648 result = XNEW (struct wchar_iterator);
650 result->input = (char *) input;
651 result->bytes = bytes;
652 result->width = width;
654 result->inter = XNEW (char);
655 result->inter_size = 1;
656 result->inter_len = 0;
662 do_cleanup_iterator (void *p)
664 struct wchar_iterator *iter = p;
666 iconv_close (iter->desc);
672 make_cleanup_wchar_iterator (struct wchar_iterator *iter)
674 return make_cleanup (do_cleanup_iterator, iter);
678 wchar_iterate (struct wchar_iterator *iter,
679 enum wchar_iterate_result *out_result,
680 gdb_wchar_t **out_chars,
681 const gdb_byte **ptr,
685 char *orig_inptr = iter->input;
686 size_t orig_in = iter->bytes;
688 /* Try to convert some characters. At first we try to convert just
689 a single character. The reason for this is that iconv does not
690 necessarily update its outgoing arguments when it encounters an
691 invalid input sequence -- but we want to reliably report this to
692 our caller so it can emit an escape sequence. */
693 while (iter->inter_len == 0 && iter->bytes > 0)
696 while (iter->bytes > 0)
698 char *outptr = (char *) &iter->inter[iter->inter_len];
699 size_t out_avail = out_request;
701 size_t r = iconv (iter->desc,
702 (ICONV_CONST char **) &iter->input, &iter->bytes,
703 &outptr, &out_avail);
704 if (r == (size_t) -1)
709 /* Invalid input sequence. Skip it, and let the caller
711 *out_result = wchar_iterate_invalid;
714 iter->input += iter->width;
715 iter->bytes -= iter->width;
719 /* We ran out of space. We still might have converted a
720 character; if so, return it. Otherwise, grow the
721 buffer and try again. */
722 if (out_avail < out_request)
726 if (out_request > iter->inter_size)
728 iter->inter_size = out_request;
729 iter->inter = xrealloc (iter->inter, out_request);
734 /* Incomplete input sequence. Let the caller know, and
735 arrange for future calls to see EOF. */
736 *out_result = wchar_iterate_incomplete;
743 perror_with_name (_("Internal error while "
744 "converting character sets"));
748 /* We converted something. */
749 iter->inter_len += out_request - out_avail;
754 if (iter->inter_len > 0)
758 /* Now convert from our charset to wchar_t */
759 r = mbtowc(&iter->out, &iter->inter[0], iter->inter_len);
761 /* This must never happen: we just converted to a valid charset! */
763 perror_with_name (_("Internal error while "
764 "converting character sets"));
766 /* NUL bytes are alright */
770 iter->inter_len -= r;
771 memmove(&iter->inter[0], &iter->inter[r], iter->inter_len);
773 *out_result = wchar_iterate_ok;
774 *out_chars = &iter->out;
776 *len = orig_in - iter->bytes;
781 *out_result = wchar_iterate_eof;
786 /* The charset.c module initialization function. */
788 extern initialize_file_ftype _initialize_charset; /* -Wmissing-prototype */
790 DEF_VEC_P (char_ptr);
792 static VEC (char_ptr) *charsets;
797 find_charset_names (void)
799 VEC_safe_push (char_ptr, charsets, GDB_DEFAULT_HOST_CHARSET);
800 VEC_safe_push (char_ptr, charsets, NULL);
803 #else /* PHONY_ICONV */
805 /* Sometimes, libiconv redefines iconvlist as libiconvlist -- but
806 provides different symbols in the static and dynamic libraries.
807 So, configure may see libiconvlist but not iconvlist. But, calling
808 iconvlist is the right thing to do and will work. Hence we do a
809 check here but unconditionally call iconvlist below. */
810 #if defined (HAVE_ICONVLIST) || defined (HAVE_LIBICONVLIST)
812 /* A helper function that adds some character sets to the vector of
813 all character sets. This is a callback function for iconvlist. */
816 add_one (unsigned int count, const char *const *names, void *data)
820 for (i = 0; i < count; ++i)
821 VEC_safe_push (char_ptr, charsets, xstrdup (names[i]));
827 find_charset_names (void)
829 iconvlist (add_one, NULL);
830 VEC_safe_push (char_ptr, charsets, NULL);
835 /* Return non-zero if LINE (output from iconv) should be ignored.
836 Older iconv programs (e.g. 2.2.2) include the human readable
837 introduction even when stdout is not a tty. Newer versions omit
838 the intro if stdout is not a tty. */
841 ignore_line_p (const char *line)
843 /* This table is used to filter the output. If this text appears
844 anywhere in the line, it is ignored (strstr is used). */
845 static const char * const ignore_lines[] =
850 "listed with several",
855 for (i = 0; ignore_lines[i] != NULL; ++i)
857 if (strstr (line, ignore_lines[i]) != NULL)
865 find_charset_names (void)
867 struct pex_obj *child;
872 struct gdb_environ *iconv_env;
875 /* Older iconvs, e.g. 2.2.2, don't omit the intro text if stdout is
876 not a tty. We need to recognize it and ignore it. This text is
877 subject to translation, so force LANGUAGE=C. */
878 iconv_env = make_environ ();
879 init_environ (iconv_env);
880 set_in_environ (iconv_env, "LANGUAGE", "C");
881 set_in_environ (iconv_env, "LC_ALL", "C");
883 child = pex_init (PEX_USE_PIPES, "iconv", NULL);
887 char *iconv_dir = relocate_gdb_directory (ICONV_BIN,
888 ICONV_BIN_RELOCATABLE);
889 iconv_program = concat (iconv_dir, SLASH_STRING, "iconv", NULL);
893 iconv_program = xstrdup ("iconv");
895 args[0] = iconv_program;
898 flags = PEX_STDERR_TO_STDOUT;
902 /* Note that we simply ignore errors here. */
903 if (!pex_run_in_environment (child, flags,
904 args[0], args, environ_vector (iconv_env),
907 FILE *in = pex_read_output (child, 0);
909 /* POSIX says that iconv -l uses an unspecified format. We
910 parse the glibc and libiconv formats; feel free to add others
915 /* The size of buf is chosen arbitrarily. */
920 r = fgets (buf, sizeof (buf), in);
926 if (ignore_line_p (r))
929 /* Strip off the newline. */
931 /* Strip off one or two '/'s. glibc will print lines like
932 "8859_7//", but also "10646-1:1993/UCS4/". */
933 if (buf[len - 1] == '/')
935 if (buf[len - 1] == '/')
939 /* libiconv will print multiple entries per line, separated
940 by spaces. Older iconvs will print multiple entries per
941 line, indented by two spaces, and separated by ", "
942 (i.e. the human readable form). */
949 /* Skip leading blanks. */
950 for (p = start; *p && *p == ' '; ++p)
953 /* Find the next space, comma, or end-of-line. */
954 for ( ; *p && *p != ' ' && *p != ','; ++p)
956 /* Ignore an empty result. */
961 VEC_safe_push (char_ptr, charsets, xstrdup (start));
964 /* Skip any extra spaces. */
965 for (start = p + 1; *start && *start == ' '; ++start)
970 if (pex_get_status (child, 1, &status)
971 && WIFEXITED (status) && !WEXITSTATUS (status))
976 xfree (iconv_program);
978 free_environ (iconv_env);
982 /* Some error occurred, so drop the vector. */
985 for (ix = 0; VEC_iterate (char_ptr, charsets, ix, elt); ++ix)
987 VEC_truncate (char_ptr, charsets, 0);
990 VEC_safe_push (char_ptr, charsets, NULL);
993 #endif /* HAVE_ICONVLIST || HAVE_LIBICONVLIST */
994 #endif /* PHONY_ICONV */
996 /* The "auto" target charset used by default_auto_charset. */
997 static const char *auto_target_charset_name = GDB_DEFAULT_TARGET_CHARSET;
1000 default_auto_charset (void)
1002 return auto_target_charset_name;
1006 default_auto_wide_charset (void)
1008 return GDB_DEFAULT_TARGET_WIDE_CHARSET;
1012 #ifdef USE_INTERMEDIATE_ENCODING_FUNCTION
1013 /* Macro used for UTF or UCS endianness suffix. */
1015 #define ENDIAN_SUFFIX "BE"
1017 #define ENDIAN_SUFFIX "LE"
1020 /* The code below serves to generate a compile time error if
1021 gdb_wchar_t type is not of size 2 nor 4, despite the fact that
1022 macro __STDC_ISO_10646__ is defined.
1023 This is better than a gdb_assert call, because GDB cannot handle
1024 strings correctly if this size is different. */
1026 extern char your_gdb_wchar_t_is_bogus[(sizeof (gdb_wchar_t) == 2
1027 || sizeof (gdb_wchar_t) == 4)
1030 /* intermediate_encoding returns the charset unsed internally by
1031 GDB to convert between target and host encodings. As the test above
1032 compiled, sizeof (gdb_wchar_t) is either 2 or 4 bytes.
1033 UTF-16/32 is tested first, UCS-2/4 is tested as a second option,
1034 otherwise an error is generated. */
1037 intermediate_encoding (void)
1040 static const char *stored_result = NULL;
1045 return stored_result;
1046 result = xstrprintf ("UTF-%d%s", (int) (sizeof (gdb_wchar_t) * 8),
1048 /* Check that the name is supported by iconv_open. */
1049 desc = iconv_open (result, host_charset ());
1050 if (desc != (iconv_t) -1)
1053 stored_result = result;
1056 /* Not valid, free the allocated memory. */
1058 /* Second try, with UCS-2 type. */
1059 result = xstrprintf ("UCS-%d%s", (int) sizeof (gdb_wchar_t),
1061 /* Check that the name is supported by iconv_open. */
1062 desc = iconv_open (result, host_charset ());
1063 if (desc != (iconv_t) -1)
1066 stored_result = result;
1069 /* Not valid, free the allocated memory. */
1071 /* No valid charset found, generate error here. */
1072 error (_("Unable to find a vaild charset for string conversions"));
1075 #endif /* USE_INTERMEDIATE_ENCODING_FUNCTION */
1078 _initialize_charset (void)
1080 /* The first element is always "auto". */
1081 VEC_safe_push (char_ptr, charsets, xstrdup ("auto"));
1082 find_charset_names ();
1084 if (VEC_length (char_ptr, charsets) > 1)
1085 charset_enum = (const char **) VEC_address (char_ptr, charsets);
1087 charset_enum = default_charset_names;
1090 #ifdef HAVE_LANGINFO_CODESET
1091 /* The result of nl_langinfo may be overwritten later. This may
1092 leak a little memory, if the user later changes the host charset,
1093 but that doesn't matter much. */
1094 auto_host_charset_name = xstrdup (nl_langinfo (CODESET));
1095 /* Solaris will return `646' here -- but the Solaris iconv then does
1096 not accept this. Darwin (and maybe FreeBSD) may return "" here,
1097 which GNU libiconv doesn't like (infinite loop). */
1098 if (!strcmp (auto_host_charset_name, "646") || !*auto_host_charset_name)
1099 auto_host_charset_name = "ASCII";
1100 auto_target_charset_name = auto_host_charset_name;
1101 #elif defined (USE_WIN32API)
1103 /* "CP" + x<=5 digits + paranoia. */
1104 static char w32_host_default_charset[16];
1106 snprintf (w32_host_default_charset, sizeof w32_host_default_charset,
1108 auto_host_charset_name = w32_host_default_charset;
1109 auto_target_charset_name = auto_host_charset_name;
1114 add_setshow_enum_cmd ("charset", class_support,
1115 charset_enum, &host_charset_name, _("\
1116 Set the host and target character sets."), _("\
1117 Show the host and target character sets."), _("\
1118 The `host character set' is the one used by the system GDB is running on.\n\
1119 The `target character set' is the one used by the program being debugged.\n\
1120 You may only use supersets of ASCII for your host character set; GDB does\n\
1121 not support any others.\n\
1122 To see a list of the character sets GDB supports, type `set charset <TAB>'."),
1123 /* Note that the sfunc below needs to set
1124 target_charset_name, because the 'set
1125 charset' command sets two variables. */
1128 &setlist, &showlist);
1130 add_setshow_enum_cmd ("host-charset", class_support,
1131 charset_enum, &host_charset_name, _("\
1132 Set the host character set."), _("\
1133 Show the host character set."), _("\
1134 The `host character set' is the one used by the system GDB is running on.\n\
1135 You may only use supersets of ASCII for your host character set; GDB does\n\
1136 not support any others.\n\
1137 To see a list of the character sets GDB supports, type `set host-charset <TAB>'."),
1138 set_host_charset_sfunc,
1139 show_host_charset_name,
1140 &setlist, &showlist);
1142 add_setshow_enum_cmd ("target-charset", class_support,
1143 charset_enum, &target_charset_name, _("\
1144 Set the target character set."), _("\
1145 Show the target character set."), _("\
1146 The `target character set' is the one used by the program being debugged.\n\
1147 GDB translates characters and strings between the host and target\n\
1148 character sets as needed.\n\
1149 To see a list of the character sets GDB supports, type `set target-charset'<TAB>"),
1150 set_target_charset_sfunc,
1151 show_target_charset_name,
1152 &setlist, &showlist);
1154 add_setshow_enum_cmd ("target-wide-charset", class_support,
1155 charset_enum, &target_wide_charset_name,
1157 Set the target wide character set."), _("\
1158 Show the target wide character set."), _("\
1159 The `target wide character set' is the one used by the program being debugged.\
1160 \nIn particular it is the encoding used by `wchar_t'.\n\
1161 GDB translates characters and strings between the host and target\n\
1162 character sets as needed.\n\
1163 To see a list of the character sets GDB supports, type\n\
1164 `set target-wide-charset'<TAB>"),
1165 set_target_wide_charset_sfunc,
1166 show_target_wide_charset_name,
1167 &setlist, &showlist);