1 /* Routines for handling XML generic OS data provided by target.
3 Copyright (C) 2008 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 "xml-support.h"
25 #include "gdb_string.h"
29 #if !defined(HAVE_LIBEXPAT)
32 osdata_parse (const char *xml
)
34 static int have_warned
;
39 warning (_("Can not parse XML OS data; XML support was disabled "
46 #else /* HAVE_LIBEXPAT */
48 #include "xml-support.h"
50 /* Internal parsing data passed to all XML callbacks. */
51 struct osdata_parsing_data
53 struct osdata
*osdata
;
58 osdata_item_clear (struct osdata_item
*item
)
60 if (item
->columns
!= NULL
)
62 struct osdata_column
*col
;
65 VEC_iterate (osdata_column_s
, item
->columns
,
72 VEC_free (osdata_column_s
, item
->columns
);
77 /* Handle the start of a <osdata> element. */
80 osdata_start_osdata (struct gdb_xml_parser
*parser
,
81 const struct gdb_xml_element
*element
,
82 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
84 struct osdata_parsing_data
*data
= user_data
;
86 struct osdata
*osdata
;
89 gdb_xml_error (parser
, _("Seen more than on osdata element"));
91 type
= VEC_index (gdb_xml_value_s
, attributes
, 0)->value
;
92 osdata
= XZALLOC (struct osdata
);
93 osdata
->type
= xstrdup (type
);
94 data
->osdata
= osdata
;
97 /* Handle the start of a <item> element. */
100 osdata_start_item (struct gdb_xml_parser
*parser
,
101 const struct gdb_xml_element
*element
,
102 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
104 struct osdata_parsing_data
*data
= user_data
;
105 struct osdata_item item
= { NULL
};
106 VEC_safe_push (osdata_item_s
, data
->osdata
->items
, &item
);
109 /* Handle the start of a <column> element. */
112 osdata_start_column (struct gdb_xml_parser
*parser
,
113 const struct gdb_xml_element
*element
,
114 void *user_data
, VEC(gdb_xml_value_s
) *attributes
)
116 struct osdata_parsing_data
*data
= user_data
;
117 const char *name
= VEC_index (gdb_xml_value_s
, attributes
, 0)->value
;
118 data
->property_name
= xstrdup (name
);
121 /* Handle the end of a <column> element. */
124 osdata_end_column (struct gdb_xml_parser
*parser
,
125 const struct gdb_xml_element
*element
,
126 void *user_data
, const char *body_text
)
128 struct osdata_parsing_data
*data
= user_data
;
129 struct osdata
*osdata
= data
->osdata
;
130 struct osdata_item
*item
= VEC_last (osdata_item_s
, osdata
->items
);
131 struct osdata_column
*col
= VEC_safe_push (osdata_column_s
,
132 item
->columns
, NULL
);
134 /* Transfer memory ownership. NAME was already strdup'ed. */
135 col
->name
= data
->property_name
;
136 col
->value
= xstrdup (body_text
);
137 data
->property_name
= NULL
;
140 /* Discard the constructed osdata (if an error occurs). */
143 clear_parsing_data (void *p
)
145 struct osdata_parsing_data
*data
= p
;
146 osdata_free (data
->osdata
);
148 xfree (data
->property_name
);
149 data
->property_name
= NULL
;
152 /* The allowed elements and attributes for OS data object.
153 The root element is a <osdata>. */
155 const struct gdb_xml_attribute column_attributes
[] = {
156 { "name", GDB_XML_AF_NONE
, NULL
, NULL
},
157 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
160 const struct gdb_xml_element item_children
[] = {
161 { "column", column_attributes
, NULL
,
162 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
163 osdata_start_column
, osdata_end_column
},
164 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
167 const struct gdb_xml_attribute osdata_attributes
[] = {
168 { "type", GDB_XML_AF_NONE
, NULL
, NULL
},
169 { NULL
, GDB_XML_AF_NONE
, NULL
, NULL
}
172 const struct gdb_xml_element osdata_children
[] = {
173 { "item", NULL
, item_children
,
174 GDB_XML_EF_REPEATABLE
| GDB_XML_EF_OPTIONAL
,
175 osdata_start_item
, NULL
},
176 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
179 const struct gdb_xml_element osdata_elements
[] = {
180 { "osdata", osdata_attributes
, osdata_children
,
181 GDB_XML_EF_NONE
, osdata_start_osdata
, NULL
},
182 { NULL
, NULL
, NULL
, GDB_XML_EF_NONE
, NULL
, NULL
}
186 osdata_parse (const char *xml
)
188 struct gdb_xml_parser
*parser
;
189 struct cleanup
*before_deleting_result
, *back_to
;
190 struct osdata_parsing_data data
= { NULL
};
192 back_to
= make_cleanup (null_cleanup
, NULL
);
193 parser
= gdb_xml_create_parser_and_cleanup (_("osdata"),
194 osdata_elements
, &data
);
195 gdb_xml_use_dtd (parser
, "osdata.dtd");
197 before_deleting_result
= make_cleanup (clear_parsing_data
, &data
);
199 if (gdb_xml_parse (parser
, xml
) == 0)
200 /* Parsed successfully, don't need to delete the result. */
201 discard_cleanups (before_deleting_result
);
203 do_cleanups (back_to
);
209 osdata_free (struct osdata
*osdata
)
214 if (osdata
->items
!= NULL
)
216 struct osdata_item
*item
;
219 VEC_iterate (osdata_item_s
, osdata
->items
,
222 osdata_item_clear (item
);
223 VEC_free (osdata_item_s
, osdata
->items
);
229 struct osdata
*get_osdata (const char *type
)
231 struct osdata
* osdata
= NULL
;
232 char *xml
= target_get_osdata (type
);
236 warning (_("Empty data returned by target. Wrong osdata type?"));
238 osdata
= osdata_parse (xml
);
242 error (_("Can not fetch data now.\n"));
248 get_osdata_column (struct osdata_item
*item
, const char *name
)
250 struct osdata_column
*col
;
254 VEC_iterate (osdata_column_s
, item
->columns
,
257 if (strcmp (col
->name
, name
) == 0)
264 info_osdata_command (char *type
, int from_tty
)
266 struct osdata
* osdata
= NULL
;
267 struct cleanup
*proc_tbl_chain
;
268 struct osdata_item
*last
;
273 /* TODO: No type could mean "list availables types". */
274 error (_("Argument required."));
276 osdata
= get_osdata (type
);
278 nprocs
= VEC_length (osdata_item_s
, osdata
->items
);
280 last
= VEC_last (osdata_item_s
, osdata
->items
);
281 if (last
&& last
->columns
)
282 ncols
= VEC_length (osdata_column_s
, last
->columns
);
287 = make_cleanup_ui_out_table_begin_end (uiout
, ncols
, nprocs
,
290 if (last
&& last
->columns
)
292 struct osdata_column
*col
;
295 VEC_iterate (osdata_column_s
, last
->columns
,
298 ui_out_table_header (uiout
, 10, ui_left
,
299 col
->name
, col
->name
);
302 ui_out_table_body (uiout
);
306 struct osdata_item
*item
;
309 VEC_iterate (osdata_item_s
, osdata
->items
,
313 struct cleanup
*old_chain
, *chain
;
314 struct ui_stream
*stb
;
316 struct osdata_column
*col
;
318 stb
= ui_out_stream_new (uiout
);
319 old_chain
= make_cleanup_ui_out_stream_delete (stb
);
320 chain
= make_cleanup_ui_out_tuple_begin_end (uiout
, "item");
323 VEC_iterate (osdata_column_s
, item
->columns
,
326 ui_out_field_string (uiout
, col
->name
, col
->value
);
329 do_cleanups (old_chain
);
331 ui_out_text (uiout
, "\n");
335 do_cleanups (proc_tbl_chain
);
337 osdata_free (osdata
);
341 info_processes_command (char *args
, int from_tty
)
343 info_osdata_command ("processes", from_tty
);
346 extern initialize_file_ftype _initialize_osdata
; /* -Wmissing-prototypes */
349 _initialize_osdata (void)
351 add_info ("os", info_osdata_command
,
352 _("Show OS data ARG."));
354 /* An alias for "info osdata processes". */
355 add_info ("processes", info_processes_command
,
356 _("List running processes on the target."));