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gdb
* c-lang.c (c_emit_char): Use INTERMEDIATE_ENCODING. (c_printstr): Likewise. * charset.c: Include gdb_wait.h. (make_wchar_iterator): Use INTERMEDIATE_ENCODING. (find_charset_names): Use pexecute. Handle libiconv's output. Detect errors. (_initialize_charset): Use xstrdup. * gdb_wchar.h: Check HAVE_BTOWC. Split PHONY_ICONV and wchar cases. (INTERMEDIATE_ENCODING): New define. * configure, config.in: Rebuild. * configure.ac: Check for btowc. gdb/doc * gdb.texinfo (Character Sets): Document default character set.
This commit is contained in:
Tom Tromey
parent
334cc82d44
commit
732f6a935c
@ -1,3 +1,18 @@
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2009-04-14 Tom Tromey <tromey@redhat.com>
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* c-lang.c (c_emit_char): Use INTERMEDIATE_ENCODING.
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(c_printstr): Likewise.
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* charset.c: Include gdb_wait.h.
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(make_wchar_iterator): Use INTERMEDIATE_ENCODING.
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(find_charset_names): Use pexecute. Handle libiconv's output.
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Detect errors.
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(_initialize_charset): Use xstrdup.
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* gdb_wchar.h: Check HAVE_BTOWC. Split PHONY_ICONV and wchar
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cases.
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(INTERMEDIATE_ENCODING): New define.
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* configure, config.in: Rebuild.
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* configure.ac: Check for btowc.
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2009-04-15 Tom Tromey <tromey@redhat.com>
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* c-lang.c (evaluate_subexp_c): Correctly handle EVAL_SKIP.
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@ -296,7 +296,7 @@ c_emit_char (int c, struct type *type, struct ui_file *stream, int quoter)
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obstack_init (&output);
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make_cleanup_obstack_free (&output);
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convert_between_encodings ("wchar_t", host_charset (),
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convert_between_encodings (INTERMEDIATE_ENCODING, host_charset (),
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obstack_base (&wchar_buf),
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obstack_object_size (&wchar_buf),
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1, &output, translit_char);
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@ -562,7 +562,7 @@ c_printstr (struct ui_file *stream, struct type *type, const gdb_byte *string,
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obstack_init (&output);
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make_cleanup_obstack_free (&output);
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convert_between_encodings ("wchar_t", host_charset (),
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convert_between_encodings (INTERMEDIATE_ENCODING, host_charset (),
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obstack_base (&wchar_buf),
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obstack_object_size (&wchar_buf),
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1, &output, translit_char);
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108
gdb/charset.c
108
gdb/charset.c
@ -22,6 +22,7 @@
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#include "gdbcmd.h"
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#include "gdb_assert.h"
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#include "gdb_obstack.h"
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#include "gdb_wait.h"
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#include "charset-list.h"
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#include "vec.h"
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@ -536,7 +537,7 @@ make_wchar_iterator (const gdb_byte *input, size_t bytes, const char *charset,
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struct wchar_iterator *result;
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iconv_t desc;
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desc = iconv_open ("wchar_t", charset);
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desc = iconv_open (INTERMEDIATE_ENCODING, charset);
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if (desc == (iconv_t) -1)
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perror_with_name ("Converting character sets");
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@ -707,35 +708,92 @@ find_charset_names (void)
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static void
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find_charset_names (void)
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{
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FILE *in;
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struct pex_obj *child;
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char *args[3];
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int err, status;
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int fail = 1;
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in = popen ("iconv -l", "r");
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/* It is ok to ignore errors; we'll fall back on a default. */
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if (!in)
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return;
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child = pex_init (0, "iconv", NULL);
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/* POSIX says that iconv -l uses an unspecified format. We parse
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the glibc format; feel free to add others as needed. */
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while (!feof (in))
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args[0] = "iconv";
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args[1] = "-l";
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args[2] = NULL;
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/* Note that we simply ignore errors here. */
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if (!pex_run (child, PEX_SEARCH | PEX_STDERR_TO_STDOUT, "iconv",
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args, NULL, NULL, &err))
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{
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/* The size of buf is chosen arbitrarily. A character set name
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longer than this would not be very nice. */
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char buf[80];
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int len;
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char *r = fgets (buf, sizeof (buf), in);
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if (!r)
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break;
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len = strlen (r);
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if (len <= 3)
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continue;
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if (buf[len - 2] == '/' && buf[len - 3] == '/')
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buf[len - 3] = '\0';
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VEC_safe_push (char_ptr, charsets, xstrdup (buf));
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FILE *in = pex_read_output (child, 0);
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/* POSIX says that iconv -l uses an unspecified format. We
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parse the glibc and libiconv formats; feel free to add others
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as needed. */
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while (!feof (in))
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{
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/* The size of buf is chosen arbitrarily. */
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char buf[1024];
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char *start, *r;
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int len, keep_going;
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r = fgets (buf, sizeof (buf), in);
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if (!r)
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break;
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len = strlen (r);
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if (len <= 3)
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continue;
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/* Strip off the newline. */
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--len;
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/* Strip off one or two '/'s. glibc will print lines like
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"8859_7//", but also "10646-1:1993/UCS4/". */
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if (buf[len - 1] == '/')
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--len;
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if (buf[len - 1] == '/')
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--len;
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buf[len] = '\0';
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/* libiconv will print multiple entries per line, separated
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by spaces. */
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start = buf;
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while (1)
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{
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int keep_going;
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char *p;
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/* Find the next space, or end-of-line. */
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for (p = start; *p && *p != ' '; ++p)
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;
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/* Ignore an empty result. */
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if (p == start)
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break;
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keep_going = *p;
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*p = '\0';
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VEC_safe_push (char_ptr, charsets, xstrdup (start));
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if (!keep_going)
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break;
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/* Skip any extra spaces. */
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for (start = p + 1; *start && *start == ' '; ++start)
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;
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}
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}
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if (pex_get_status (child, 1, &status)
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&& WIFEXITED (status) && !WEXITSTATUS (status))
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fail = 0;
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}
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pclose (in);
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pex_free (child);
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VEC_safe_push (char_ptr, charsets, NULL);
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if (fail)
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{
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/* Some error occurred, so drop the vector. */
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int ix;
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char *elt;
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for (ix = 0; VEC_iterate (char_ptr, charsets, ix, elt); ++ix)
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xfree (elt);
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VEC_truncate (char_ptr, charsets, 0);
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}
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else
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VEC_safe_push (char_ptr, charsets, NULL);
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}
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#endif /* HAVE_ICONVLIST || HAVE_LIBICONVLIST */
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@ -748,7 +806,7 @@ _initialize_charset (void)
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/* The first element is always "auto"; then we skip it for the
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commands where it is not allowed. */
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VEC_safe_push (char_ptr, charsets, "auto");
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VEC_safe_push (char_ptr, charsets, xstrdup ("auto"));
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find_charset_names ();
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if (VEC_length (char_ptr, charsets) > 1)
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@ -70,6 +70,9 @@
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/* Define to 1 if you have the <bp-sym.h> header file. */
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#undef HAVE_BP_SYM_H
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/* Define to 1 if you have the `btowc' function. */
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#undef HAVE_BTOWC
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/* Define to 1 if you have the `canonicalize_file_name' function. */
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#undef HAVE_CANONICALIZE_FILE_NAME
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3
gdb/configure
vendored
3
gdb/configure
vendored
@ -15774,12 +15774,13 @@ fi
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for ac_func in canonicalize_file_name realpath getrusage getuid \
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getgid poll pread64 sbrk setpgid setpgrp setsid \
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sigaction sigprocmask sigsetmask socketpair syscall \
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ttrace wborder setlocale iconvlist libiconvlist
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ttrace wborder setlocale iconvlist libiconvlist btowc
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do
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as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
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echo "$as_me:$LINENO: checking for $ac_func" >&5
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@ -796,7 +796,7 @@ AC_FUNC_VFORK
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AC_CHECK_FUNCS([canonicalize_file_name realpath getrusage getuid \
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getgid poll pread64 sbrk setpgid setpgrp setsid \
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sigaction sigprocmask sigsetmask socketpair syscall \
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ttrace wborder setlocale iconvlist libiconvlist])
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ttrace wborder setlocale iconvlist libiconvlist btowc])
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AM_LANGINFO_CODESET
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# Check the return and argument types of ptrace. No canned test for
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@ -1,3 +1,7 @@
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2009-04-15 Tom Tromey <tromey@redhat.com>
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* gdb.texinfo (Character Sets): Document default character set.
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2009-04-14 Pierre Muller <muller@ics.u-strasbg.fr>
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* gdbint.texinfo: Change server name from sources.redhat.com to
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@ -7998,7 +7998,9 @@ Set the current host character set to @var{charset}.
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By default, @value{GDBN} uses a host character set appropriate to the
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system it is running on; you can override that default using the
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@code{set host-charset} command.
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@code{set host-charset} command. On some systems, @value{GDBN} cannot
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automatically determine the appropriate host character set. In this
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case, @value{GDBN} uses @samp{UTF-8}.
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@value{GDBN} can only use certain character sets as its host character
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set. If you type @kbd{@w{set target-charset @key{TAB}@key{TAB}}},
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@ -19,13 +19,36 @@
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#ifndef GDB_WCHAR_H
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#define GDB_WCHAR_H
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/* If this host has wchar_t and if iconv is available (perhaps via GNU
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libiconv), then we arrange to use those. Otherwise, we provide a
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phony iconv which only handles a single character set, and we
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provide wrappers for the wchar_t functionality we use. */
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#if defined(HAVE_ICONV) && defined(HAVE_WCHAR_H)
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/* We handle three different modes here.
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Capable systems have the full suite: wchar_t support and iconv
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(perhaps via GNU libiconv). On these machines, full functionality
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is available.
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DJGPP is known to have libiconv but not wchar_t support. On
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systems like this, we use the narrow character functions. The full
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functionality is available to the user, but many characters (those
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outside the narrow range) will be displayed as escapes.
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Finally, some systems do not have iconv. Here we provide a phony
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iconv which only handles a single character set, and we provide
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wrappers for the wchar_t functionality we use. */
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#define INTERMEDIATE_ENCODING "wchar_t"
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#if defined (HAVE_ICONV)
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#include <iconv.h>
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#else
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/* This define is used elsewhere so we don't need to duplicate the
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same checking logic in multiple places. */
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#define PHONY_ICONV
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#endif
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/* We use "btowc" as a sentinel to detect functioning wchar_t
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support. */
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#if defined (HAVE_ICONV) && defined (HAVE_WCHAR_H) && defined (HAVE_BTOWC)
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#include <wchar.h>
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#include <wctype.h>
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@ -53,10 +76,15 @@ typedef int gdb_wint_t;
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#define LCST(X) X
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/* This define is used elsewhere so we don't need to duplicate the
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same checking logic in multiple places. */
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#define PHONY_ICONV
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/* If we are using the narrow character set, we want to use the host
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narrow encoding as our intermediate encoding. However, if we are
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also providing a phony iconv, we might as well just stick with
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"wchar_t". */
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#ifndef PHONY_ICONV
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#undef INTERMEDIATE_ENCODING
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#define INTERMEDIATE_ENCODING host_charset ()
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#endif
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#endif /* defined(HAVE_ICONV) && defined(HAVE_WCHAR_H) */
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#endif
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#endif /* GDB_WCHAR_H */
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