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."));